- OpenSSL CHANGES
- _______________
-
- This is a high-level summary of the most important changes.
- For a full list of changes, see the git commit log; for example,
- https://github.com/openssl/openssl/commits/ and pick the appropriate
- release branch.
-
- Changes between 1.1.1 and 3.0.0 [xx XXX xxxx]
-
- *) The test suite is changed to preserve results of each test recipe.
- A new directory test-runs/ with subdirectories named like the
- test recipes are created in the build tree for this purpose.
- [Richard Levitte]
-
- *) The command line utilities ecparam and ec have been deprecated. Instead
- use the pkeyparam, pkey and genpkey programs.
- [Paul Dale]
-
- *) All of the low level RSA functions have been deprecated including:
-
- RSA_new_method, RSA_bits, RSA_size, RSA_security_bits,
- RSA_get0_pss_params, RSA_get_version, RSA_get0_engine,
- RSA_generate_key_ex, RSA_generate_multi_prime_key,
- RSA_X931_derive_ex, RSA_X931_generate_key_ex, RSA_check_key,
- RSA_check_key_ex, RSA_public_encrypt, RSA_private_encrypt,
- RSA_public_decrypt, RSA_private_decrypt, RSA_set_default_method,
- RSA_get_default_method, RSA_null_method, RSA_get_method, RSA_set_method,
- RSA_PKCS1_OpenSSL, RSA_print_fp, RSA_print, RSA_sign, RSA_verify,
- RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING,
- RSA_blinding_on, RSA_blinding_off, RSA_setup_blinding,
- RSA_padding_add_PKCS1_type_1, RSA_padding_check_PKCS1_type_1,
- RSA_padding_add_PKCS1_type_2, RSA_padding_check_PKCS1_type_2,
- PKCS1_MGF1, RSA_padding_add_PKCS1_OAEP, RSA_padding_check_PKCS1_OAEP,
- RSA_padding_add_PKCS1_OAEP_mgf1, RSA_padding_check_PKCS1_OAEP_mgf1,
- RSA_padding_add_SSLv23, RSA_padding_check_SSLv23,
- RSA_padding_add_none, RSA_padding_check_none, RSA_padding_add_X931,
- RSA_padding_check_X931, RSA_X931_hash_id, RSA_verify_PKCS1_PSS,
- RSA_padding_add_PKCS1_PSS, RSA_verify_PKCS1_PSS_mgf1,
- RSA_padding_add_PKCS1_PSS_mgf1, RSA_set_ex_data, RSA_get_ex_data,
- RSA_meth_new, RSA_meth_free, RSA_meth_dup, RSA_meth_get0_name,
- RSA_meth_set1_name, RSA_meth_get_flags, RSA_meth_set_flags,
- RSA_meth_get0_app_data, RSA_meth_set0_app_data, RSA_meth_get_pub_enc,
- RSA_meth_set_pub_enc, RSA_meth_get_pub_dec, RSA_meth_set_pub_dec,
- RSA_meth_get_priv_enc, RSA_meth_set_priv_enc, RSA_meth_get_priv_dec,
- RSA_meth_set_priv_dec, RSA_meth_get_mod_exp, RSA_meth_set_mod_exp,
- RSA_meth_get_bn_mod_exp, RSA_meth_set_bn_mod_exp, RSA_meth_get_init,
- RSA_meth_set_init, RSA_meth_get_finish, RSA_meth_set_finish,
- RSA_meth_get_sign, RSA_meth_set_sign, RSA_meth_get_verify,
- RSA_meth_set_verify, RSA_meth_get_keygen, RSA_meth_set_keygen,
- RSA_meth_get_multi_prime_keygen and RSA_meth_set_multi_prime_keygen.
-
- Use of these low level functions has been informally discouraged for a long
- time. Instead applications should use L<EVP_PKEY_encrypt_init(3)>,
- L<EVP_PKEY_encrypt(3)>, L<EVP_PKEY_decrypt_init(3)> and
- L<EVP_PKEY_decrypt(3)>.
- [Paul Dale]
-
- *) X509 certificates signed using SHA1 are no longer allowed at security
- level 1 and above.
- In TLS/SSL the default security level is 1. It can be set either
- using the cipher string with @SECLEVEL, or calling
- SSL_CTX_set_security_level(). If the leaf certificate is signed with SHA-1,
- a call to SSL_CTX_use_certificate() will fail if the security level is not
- lowered first.
- Outside TLS/SSL, the default security level is -1 (effectively 0). It can
- be set using X509_VERIFY_PARAM_set_auth_level() or using the -auth_level
- options of the apps.
- [Kurt Roeckx]
-
- *) The command line utilities dhparam, dsa, gendsa and dsaparam have been
- deprecated. Instead use the pkeyparam, pkey, genpkey and pkeyparam
- programs respectively.
- [Paul Dale]
-
- *) All of the low level DH functions have been deprecated including:
-
- DH_OpenSSL, DH_set_default_method, DH_get_default_method, DH_set_method,
- DH_new_method, DH_bits, DH_size, DH_security_bits, DH_get_ex_new_index,
- DH_set_ex_data, DH_get_ex_data, DH_generate_parameters_ex,
- DH_check_params_ex, DH_check_ex, DH_check_pub_key_ex,
- DH_check, DH_check_pub_key, DH_generate_key, DH_compute_key,
- DH_compute_key_padded, DHparams_print_fp, DHparams_print, DH_get_nid,
- DH_KDF_X9_42, DH_get0_engine, DH_get_length, DH_set_length, DH_meth_new,
- DH_meth_free, DH_meth_dup, DH_meth_get0_name, DH_meth_set1_name,
- DH_meth_get_flags, DH_meth_set_flags, DH_meth_get0_app_data,
- DH_meth_set0_app_data, DH_meth_get_generate_key,
- DH_meth_set_generate_key, DH_meth_get_compute_key,
- DH_meth_set_compute_key, DH_meth_get_bn_mod_exp,
- DH_meth_set_bn_mod_exp, DH_meth_get_init, DH_meth_set_init,
- DH_meth_get_finish, DH_meth_set_finish, DH_meth_get_generate_params
- and DH_meth_set_generate_params.
-
- Use of these low level functions has been informally discouraged for a long
- time. Instead applications should use L<EVP_PKEY_derive_init(3)>
- and L<EVP_PKEY_derive(3)>.
- [Paul Dale]
-
- *) All of the low level DSA functions have been deprecated including:
-
- DSA_do_sign, DSA_do_verify, DSA_OpenSSL, DSA_set_default_method,
- DSA_get_default_method, DSA_set_method, DSA_get_method, DSA_new_method,
- DSA_sign_setup, DSA_sign, DSA_verify, DSA_get_ex_new_index,
- DSA_set_ex_data, DSA_get_ex_data, DSA_generate_parameters_ex,
- DSA_generate_key, DSA_meth_new, DSA_get0_engine, DSA_meth_free,
- DSA_meth_dup, DSA_meth_get0_name, DSA_meth_set1_name, DSA_meth_get_flags,
- DSA_meth_set_flags, DSA_meth_get0_app_data, DSA_meth_set0_app_data,
- DSA_meth_get_sign, DSA_meth_set_sign, DSA_meth_get_sign_setup,
- DSA_meth_set_sign_setup, DSA_meth_get_verify, DSA_meth_set_verify,
- DSA_meth_get_mod_exp, DSA_meth_set_mod_exp, DSA_meth_get_bn_mod_exp,
- DSA_meth_set_bn_mod_exp, DSA_meth_get_init, DSA_meth_set_init,
- DSA_meth_get_finish, DSA_meth_set_finish, DSA_meth_get_paramgen,
- DSA_meth_set_paramgen, DSA_meth_get_keygen and DSA_meth_set_keygen.
-
- Use of these low level functions has been informally discouraged for a long
- time. Instead applications should use L<EVP_DigestSignInit_ex(3)>,
- L<EVP_DigestSignUpdate(3)> and L<EVP_DigestSignFinal(3)>.
- [Paul Dale]
-
- *) Reworked the treatment of EC EVP_PKEYs with the SM2 curve to
- automatically become EVP_PKEY_SM2 rather than EVP_PKEY_EC.
- This means that applications don't have to look at the curve NID and
- 'EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2)' to get SM2 computations.
- However, they still can, that EVP_PKEY_set_alias_type() call acts as
- a no-op when the EVP_PKEY is already of the given type.
-
- Parameter and key generation is also reworked to make it possible
- to generate EVP_PKEY_SM2 parameters and keys without having to go
- through EVP_PKEY_EC generation and then change the EVP_PKEY type.
- However, code that does the latter will still work as before.
- [Richard Levitte]
-
- *) Deprecated low level ECDH and ECDSA functions. These include:
-
- ECDH_compute_key, ECDSA_do_sign, ECDSA_do_sign_ex, ECDSA_do_verify,
- ECDSA_sign_setup, ECDSA_sign, ECDSA_sign_ex, ECDSA_verify and
- ECDSA_size.
-
- Use of these low level functions has been informally discouraged for a long
- time. Instead applications should use the EVP_PKEY_derive(3),
- EVP_DigestSign(3) and EVP_DigestVerify(3) functions.
- [Paul Dale]
-
- *) Deprecated the EC_KEY_METHOD functions. These include:
-
- EC_KEY_METHOD_new, EC_KEY_METHOD_free, EC_KEY_METHOD_set_init,
- EC_KEY_METHOD_set_keygen, EC_KEY_METHOD_set_compute_key,
- EC_KEY_METHOD_set_sign, EC_KEY_METHOD_set_verify,
- EC_KEY_METHOD_get_init, EC_KEY_METHOD_get_keygen,
- EC_KEY_METHOD_get_compute_key, EC_KEY_METHOD_get_sign and
- EC_KEY_METHOD_get_verify.
-
- Instead applications and extension writers should use the OSSL_PROVIDER
- APIs.
- [Paul Dale]
-
- *) Deprecated EVP_PKEY_decrypt_old(), please use EVP_PKEY_decrypt_init()
- and EVP_PKEY_decrypt() instead.
- Deprecated EVP_PKEY_encrypt_old(), please use EVP_PKEY_encrypt_init()
- and EVP_PKEY_encrypt() instead.
- [Richard Levitte]
-
- *) Enhanced the documentation of EVP_PKEY_size(), EVP_PKEY_bits()
- and EVP_PKEY_security_bits(). Especially EVP_PKEY_size() needed
- a new formulation to include all the things it can be used for,
- as well as words of caution.
- [Richard Levitte]
-
- *) The SSL_CTX_set_tlsext_ticket_key_cb(3) function has been deprecated.
- Instead used the new SSL_CTX_set_tlsext_ticket_key_evp_cb(3) function.
- [Paul Dale]
-
- *) All of the low level HMAC functions have been deprecated including:
- HMAC, HMAC_size, HMAC_CTX_new, HMAC_CTX_reset, HMAC_CTX_free,
- HMAC_Init_ex, HMAC_Update, HMAC_Final, HMAC_CTX_copy, HMAC_CTX_set_flags
- and HMAC_CTX_get_md.
- Use of these low level functions has been informally discouraged for a long
- time. Instead applications should use L<EVP_MAC_CTX_new(3)>,
- L<EVP_MAC_CTX_free(3)>, L<EVP_MAC_init(3)>, L<EVP_MAC_update(3)>
- and L<EVP_MAC_final(3)>.
- [Paul Dale]
-
- *) All of the low level CMAC functions have been deprecated including:
- CMAC_CTX_new, CMAC_CTX_cleanup, CMAC_CTX_free, CMAC_CTX_get0_cipher_ctx,
- CMAC_CTX_copy, CMAC_Init, CMAC_Update, CMAC_Final and CMAC_resume.
- Use of these low level functions has been informally discouraged for a long
- time. Instead applications should use L<EVP_MAC_CTX_new(3)>,
- L<EVP_MAC_CTX_free(3)>, L<EVP_MAC_init(3)>, L<EVP_MAC_update(3)>
- and L<EVP_MAC_final(3)>.
- [Paul Dale]
-
- *) Over two thousand fixes were made to the documentation, including:
- - Common options (such as -rand/-writerand, TLS version control, etc)
- were refactored and point to newly-enhanced descriptions in openssl.pod.
- - Added style conformance for all options (with help from Richard Levitte),
- documented all reported missing options, added a CI build to check
- that all options are documented and that no unimplemented options
- are documented.
- - Documented some internals, such as all use of environment variables.
- - Addressed all internal broken L<> references.
- [Rich Salz]
-
- *) All of the low level MD2, MD4, MD5, MDC2, RIPEMD160, SHA1, SHA224, SHA256,
- SHA384, SHA512 and Whirlpool digest functions have been deprecated.
- These include:
-
- MD2, MD2_options, MD2_Init, MD2_Update, MD2_Final, MD4, MD4_Init,
- MD4_Update, MD4_Final, MD4_Transform, MD5, MD5_Init, MD5_Update,
- MD5_Final, MD5_Transform, MDC2, MDC2_Init, MDC2_Update, MDC2_Final,
- RIPEMD160, RIPEMD160_Init, RIPEMD160_Update, RIPEMD160_Final,
- RIPEMD160_Transform, SHA1_Init, SHA1_Update, SHA1_Final, SHA1_Transform,
- SHA224_Init, SHA224_Update, SHA224_Final, SHA224_Transform, SHA256_Init,
- SHA256_Update, SHA256_Final, SHA256_Transform, SHA384, SHA384_Init,
- SHA384_Update, SHA384_Final, SHA512, SHA512_Init, SHA512_Update,
- SHA512_Final, SHA512_Transform, WHIRLPOOL, WHIRLPOOL_Init,
- WHIRLPOOL_Update, WHIRLPOOL_BitUpdate and WHIRLPOOL_Final.
-
- Use of these low level functions has been informally discouraged
- for a long time. Applications should use the EVP_DigestInit_ex(3),
- EVP_DigestUpdate(3) and EVP_DigestFinal_ex(3) functions instead.
- [Paul Dale]
-
- *) Corrected the documentation of the return values from the EVP_DigestSign*
- set of functions. The documentation mentioned negative values for some
- errors, but this was never the case, so the mention of negative values
- was removed.
-
- Code that followed the documentation and thereby check with something
- like 'EVP_DigestSignInit(...) <= 0' will continue to work undisturbed.
- [Richard Levitte]
-
- *) All of the low level cipher functions have been deprecated including:
-
- AES_options, AES_set_encrypt_key, AES_set_decrypt_key, AES_encrypt,
- AES_decrypt, AES_ecb_encrypt, AES_cbc_encrypt, AES_cfb128_encrypt,
- AES_cfb1_encrypt, AES_cfb8_encrypt, AES_ofb128_encrypt,
- AES_wrap_key, AES_unwrap_key, BF_set_key, BF_encrypt, BF_decrypt,
- BF_ecb_encrypt, BF_cbc_encrypt, BF_cfb64_encrypt, BF_ofb64_encrypt,
- BF_options, Camellia_set_key, Camellia_encrypt, Camellia_decrypt,
- Camellia_ecb_encrypt, Camellia_cbc_encrypt, Camellia_cfb128_encrypt,
- Camellia_cfb1_encrypt, Camellia_cfb8_encrypt, Camellia_ofb128_encrypt,
- Camellia_ctr128_encrypt, CAST_set_key, CAST_encrypt, CAST_decrypt,
- CAST_ecb_encrypt, CAST_cbc_encrypt, CAST_cfb64_encrypt,
- CAST_ofb64_encrypt, DES_options, DES_encrypt1, DES_encrypt2,
- DES_encrypt3, DES_decrypt3, DES_cbc_encrypt, DES_ncbc_encrypt,
- DES_pcbc_encrypt, DES_xcbc_encrypt, DES_cfb_encrypt, DES_cfb64_encrypt,
- DES_ecb_encrypt, DES_ofb_encrypt, DES_ofb64_encrypt, DES_random_key,
- DES_set_odd_parity, DES_check_key_parity, DES_is_weak_key, DES_set_key,
- DES_key_sched, DES_set_key_checked, DES_set_key_unchecked,
- DES_string_to_key, DES_string_to_2keys, DES_fixup_key_parity,
- DES_ecb2_encrypt, DES_ede2_cbc_encrypt, DES_ede2_cfb64_encrypt,
- DES_ede2_ofb64_encrypt, DES_ecb3_encrypt, DES_ede3_cbc_encrypt,
- DES_ede3_cfb64_encrypt, DES_ede3_cfb_encrypt, DES_ede3_ofb64_encrypt,
- DES_cbc_cksum, DES_quad_cksum, IDEA_encrypt, IDEA_options,
- IDEA_ecb_encrypt, IDEA_set_encrypt_key, IDEA_set_decrypt_key,
- IDEA_cbc_encrypt, IDEA_cfb64_encrypt, IDEA_ofb64_encrypt, RC2_set_key,
- RC2_encrypt, RC2_decrypt, RC2_ecb_encrypt, RC2_cbc_encrypt,
- RC2_cfb64_encrypt, RC2_ofb64_encrypt, RC4, RC4_options, RC4_set_key,
- RC5_32_set_key, RC5_32_encrypt, RC5_32_decrypt, RC5_32_ecb_encrypt,
- RC5_32_cbc_encrypt, RC5_32_cfb64_encrypt, RC5_32_ofb64_encrypt,
- SEED_set_key, SEED_encrypt, SEED_decrypt, SEED_ecb_encrypt,
- SEED_cbc_encrypt, SEED_cfb128_encrypt and SEED_ofb128_encrypt.
-
- Use of these low level functions has been informally discouraged for
- a long time. Applications should use the high level EVP APIs, e.g.
- EVP_EncryptInit_ex, EVP_EncryptUpdate, EVP_EncryptFinal_ex, and the
- equivalently named decrypt functions instead.
- [Matt Caswell and Paul Dale]
-
- *) Removed include/openssl/opensslconf.h.in and replaced it with
- include/openssl/configuration.h.in, which differs in not including
- <openssl/macros.h>. A short header include/openssl/opensslconf.h
- was added to include both.
-
- This allows internal hacks where one might need to modify the set
- of configured macros, for example this if deprecated symbols are
- still supposed to be available internally:
-
- #include <openssl/configuration.h>
-
- #undef OPENSSL_NO_DEPRECATED
- #define OPENSSL_SUPPRESS_DEPRECATED
-
- #include <openssl/macros.h>
-
- This should not be used by applications that use the exported
- symbols, as that will lead to linking errors.
- [Richard Levitte]
-
- *) Fixed an an overflow bug in the x64_64 Montgomery squaring procedure
- used in exponentiation with 512-bit moduli. No EC algorithms are
- affected. Analysis suggests that attacks against 2-prime RSA1024,
- 3-prime RSA1536, and DSA1024 as a result of this defect would be very
- difficult to perform and are not believed likely. Attacks against DH512
- are considered just feasible. However, for an attack the target would
- have to re-use the DH512 private key, which is not recommended anyway.
- Also applications directly using the low level API BN_mod_exp may be
- affected if they use BN_FLG_CONSTTIME.
- (CVE-2019-1551)
- [Andy Polyakov]
-
- *) Most memory-debug features have been deprecated, and the functionality
- replaced with no-ops.
- [Rich Salz]
-
- *) Introduced a new method type and API, OSSL_SERIALIZER, to
- represent generic serializers. An implementation is expected to
- be able to serialize an object associated with a given name (such
- as an algorithm name for an asymmetric key) into forms given by
- implementation properties.
-
- Serializers are primarily used from inside libcrypto, through
- calls to functions like EVP_PKEY_print_private(),
- PEM_write_bio_PrivateKey() and similar.
-
- Serializers are specified in such a way that they can be made to
- directly handle the provider side portion of an object, if this
- provider side part comes from the same provider as the serializer
- itself, but can also be made to handle objects in parametrized
- form (as an OSSL_PARAM array of data). This allows a provider to
- offer generic serializers as a service for any other provider.
- [Richard Levitte]
-
- *) Added a .pragma directive to the syntax of configuration files, to
- allow varying behavior in a supported and predictable manner.
- Currently added pragma:
-
- .pragma dollarid:on
-
- This allows dollar signs to be a keyword character unless it's
- followed by a opening brace or parenthesis. This is useful for
- platforms where dollar signs are commonly used in names, such as
- volume names and system directory names on VMS.
- [Richard Levitte]
-
- *) Added functionality to create an EVP_PKEY from user data. This
- is effectively the same as creating a RSA, DH or DSA object and
- then assigning them to an EVP_PKEY, but directly using algorithm
- agnostic EVP functions. A benefit is that this should be future
- proof for public key algorithms to come.
- [Richard Levitte]
-
- *) Change the interpretation of the '--api' configuration option to
- mean that this is a desired API compatibility level with no
- further meaning. The previous interpretation, that this would
- also mean to remove all deprecated symbols up to and including
- the given version, no requires that 'no-deprecated' is also used
- in the configuration.
-
- When building applications, the desired API compatibility level
- can be set with the OPENSSL_API_COMPAT macro like before. For
- API compatibility version below 3.0, the old style numerical
- value is valid as before, such as -DOPENSSL_API_COMPAT=0x10100000L.
- For version 3.0 and on, the value is expected to be the decimal
- value calculated from the major and minor version like this:
-
- MAJOR * 10000 + MINOR * 100
-
- Examples:
-
- -DOPENSSL_API_COMPAT=30000 For 3.0
- -DOPENSSL_API_COMPAT=30200 For 3.2
-
- To hide declarations that are deprecated up to and including the
- given API compatibility level, -DOPENSSL_NO_DEPRECATED must be
- given when building the application as well.
- [Richard Levitte]
-
- *) Added the X509_LOOKUP_METHOD called X509_LOOKUP_store, to allow
- access to certificate and CRL stores via URIs and OSSL_STORE
- loaders.
-
- This adds the following functions:
-
- X509_LOOKUP_store()
- X509_STORE_load_file()
- X509_STORE_load_path()
- X509_STORE_load_store()
- SSL_add_store_cert_subjects_to_stack()
- SSL_CTX_set_default_verify_store()
- SSL_CTX_load_verify_file()
- SSL_CTX_load_verify_dir()
- SSL_CTX_load_verify_store()
-
- Also, the following functions are now deprecated:
-
- - X509_STORE_load_locations() (use X509_STORE_load_file(),
- X509_STORE_load_path() or X509_STORE_load_store() instead)
- - SSL_CTX_load_verify_locations() (use SSL_CTX_load_verify_file(),
- SSL_CTX_load_verify_dir() or SSL_CTX_load_verify_store() instead)
- [Richard Levitte]
-
- *) Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
- The presence of this system service is determined at run-time.
- [Richard Levitte]
-
- *) Added functionality to create an EVP_PKEY context based on data
- for methods from providers. This takes an algorithm name and a
- property query string and simply stores them, with the intent
- that any operation that uses this context will use those strings
- to fetch the needed methods implicitly, thereby making the port
- of application written for pre-3.0 OpenSSL easier.
- [Richard Levitte]
-
- *) The undocumented function NCONF_WIN32() has been deprecated; for
- conversion details see the HISTORY section of doc/man5/config.pod
- [Rich Salz]
-
- *) Introduced the new functions EVP_DigestSignInit_ex() and
- EVP_DigestVerifyInit_ex(). The macros EVP_DigestSignUpdate() and
- EVP_DigestVerifyUpdate() have been converted to functions. See the man
- pages for further details.
- [Matt Caswell]
-
- *) s390x assembly pack: add hardware-support for P-256, P-384, P-521,
- X25519, X448, Ed25519 and Ed448.
- [Patrick Steuer]
-
- *) Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
- the first value.
- [Jon Spillett]
-
- *) Deprecated the public definition of ERR_STATE as well as the function
- ERR_get_state(). This is done in preparation of making ERR_STATE an
- opaque type.
- [Richard Levitte]
-
- *) Added ERR functionality to give callers access to the stored function
- names that have replaced the older function code based functions.
-
- New functions are ERR_get_error_func(), ERR_peek_error_func(),
- ERR_peek_last_error_func(), ERR_get_error_data(), ERR_peek_error_data(),
- ERR_peek_last_error_data(), ERR_get_error_all(), ERR_peek_error_all()
- and ERR_peek_last_error_all().
-
- These functions have become deprecated: ERR_get_error_line_data(),
- ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
- ERR_func_error_string().
- [Richard Levitte]
-
- *) Extended testing to be verbose for failing tests only. The make variables
- VERBOSE_FAILURE or VF can be used to enable this:
-
- $ make VF=1 test # Unix
- $ mms /macro=(VF=1) test ! OpenVMS
- $ nmake VF=1 test # Windows
-
- [Richard Levitte]
-
- *) For built-in EC curves, ensure an EC_GROUP built from the curve name is
- used even when parsing explicit parameters, when loading a serialized key
- or calling `EC_GROUP_new_from_ecpkparameters()`/
- `EC_GROUP_new_from_ecparameters()`.
- This prevents bypass of security hardening and performance gains,
- especially for curves with specialized EC_METHODs.
- By default, if a key encoded with explicit parameters is loaded and later
- serialized, the output is still encoded with explicit parameters, even if
- internally a "named" EC_GROUP is used for computation.
- [Nicola Tuveri]
-
- *) Compute ECC cofactors if not provided during EC_GROUP construction. Before
- this change, EC_GROUP_set_generator would accept order and/or cofactor as
- NULL. After this change, only the cofactor parameter can be NULL. It also
- does some minimal sanity checks on the passed order.
- (CVE-2019-1547)
- [Billy Bob Brumley]
-
- *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
- An attack is simple, if the first CMS_recipientInfo is valid but the
- second CMS_recipientInfo is chosen ciphertext. If the second
- recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
- encryption key will be replaced by garbage, and the message cannot be
- decoded, but if the RSA decryption fails, the correct encryption key is
- used and the recipient will not notice the attack.
- As a work around for this potential attack the length of the decrypted
- key must be equal to the cipher default key length, in case the
- certifiate is not given and all recipientInfo are tried out.
- The old behaviour can be re-enabled in the CMS code by setting the
- CMS_DEBUG_DECRYPT flag.
- [Bernd Edlinger]
-
- *) Early start up entropy quality from the DEVRANDOM seed source has been
- improved for older Linux systems. The RAND subsystem will wait for
- /dev/random to be producing output before seeding from /dev/urandom.
- The seeded state is stored for future library initialisations using
- a system global shared memory segment. The shared memory identifier
- can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
- the desired value. The default identifier is 114.
- [Paul Dale]
-
- *) Revised BN_generate_prime_ex to not avoid factors 2..17863 in p-1
- when primes for RSA keys are computed.
- Since we previously always generated primes == 2 (mod 3) for RSA keys,
- the 2-prime and 3-prime RSA modules were easy to distinguish, since
- N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
- 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
- This avoids possible fingerprinting of newly generated RSA modules.
- [Bernd Edlinger]
-
- *) Correct the extended master secret constant on EBCDIC systems. Without this
- fix TLS connections between an EBCDIC system and a non-EBCDIC system that
- negotiate EMS will fail. Unfortunately this also means that TLS connections
- between EBCDIC systems with this fix, and EBCDIC systems without this
- fix will fail if they negotiate EMS.
- [Matt Caswell]
-
- *) Changed the library initialisation so that the config file is now loaded
- by default. This was already the case for libssl. It now occurs for both
- libcrypto and libssl. Use the OPENSSL_INIT_NO_LOAD_CONFIG option to
- OPENSSL_init_crypto() to suppress automatic loading of a config file.
- [Matt Caswell]
-
- *) Introduced new error raising macros, ERR_raise() and ERR_raise_data(),
- where the former acts as a replacement for ERR_put_error(), and the
- latter replaces the combination ERR_put_error()+ERR_add_error_data().
- ERR_raise_data() adds more flexibility by taking a format string and
- an arbitrary number of arguments following it, to be processed with
- BIO_snprintf().
- [Richard Levitte]
-
- *) Introduced a new function, OSSL_PROVIDER_available(), which can be used
- to check if a named provider is loaded and available. When called, it
- will also activate all fallback providers if such are still present.
- [Richard Levitte]
-
- *) Enforce a minimum DH modulus size of 512 bits.
- [Bernd Edlinger]
-
- *) Changed DH parameters to generate the order q subgroup instead of 2q.
- Previously generated DH parameters are still accepted by DH_check
- but DH_generate_key works around that by clearing bit 0 of the
- private key for those. This avoids leaking bit 0 of the private key.
- [Bernd Edlinger]
-
- *) Significantly reduce secure memory usage by the randomness pools.
- [Paul Dale]
-
- *) {CRYPTO,OPENSSL}_mem_debug_{push,pop} are now no-ops and have been
- deprecated.
- [Rich Salz]
-
- *) A new type, EVP_KEYEXCH, has been introduced to represent key exchange
- algorithms. An implementation of a key exchange algorithm can be obtained
- by using the function EVP_KEYEXCH_fetch(). An EVP_KEYEXCH algorithm can be
- used in a call to EVP_PKEY_derive_init_ex() which works in a similar way to
- the older EVP_PKEY_derive_init() function. See the man pages for the new
- functions for further details.
- [Matt Caswell]
-
- *) The EVP_PKEY_CTX_set_dh_pad() macro has now been converted to a function.
- [Matt Caswell]
-
- *) Removed the function names from error messages and deprecated the
- xxx_F_xxx define's.
-
- *) Removed NextStep support and the macro OPENSSL_UNISTD
- [Rich Salz]
-
- *) Removed DES_check_key. Also removed OPENSSL_IMPLEMENT_GLOBAL,
- OPENSSL_GLOBAL_REF, OPENSSL_DECLARE_GLOBAL.
- Also removed "export var as function" capability; we do not export
- variables, only functions.
- [Rich Salz]
-
- *) RC5_32_set_key has been changed to return an int type, with 0 indicating
- an error and 1 indicating success. In previous versions of OpenSSL this
- was a void type. If a key was set longer than the maximum possible this
- would crash.
- [Matt Caswell]
-
- *) Support SM2 signing and verification schemes with X509 certificate.
- [Paul Yang]
-
- *) Use SHA256 as the default digest for TS query in the ts app.
- [Tomas Mraz]
-
- *) Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
- This checks that the salt length is at least 128 bits, the derived key
- length is at least 112 bits, and that the iteration count is at least 1000.
- For backwards compatibility these checks are disabled by default in the
- default provider, but are enabled by default in the fips provider.
- To enable or disable these checks use the control
- EVP_KDF_CTRL_SET_PBKDF2_PKCS5_MODE.
- [Shane Lontis]
-
- *) Default cipher lists/suites are now available via a function, the
- #defines are deprecated.
- [Todd Short]
-
- *) Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
- VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
- for Windows Store apps easier. Also, the "no-uplink" option has been added.
- [Kenji Mouri]
-
- *) Join the directories crypto/x509 and crypto/x509v3
- [Richard Levitte]
-
- *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
- This changes the size when using the genpkey app when no size is given. It
- fixes an omission in earlier changes that changed all RSA, DSA and DH
- generation apps to use 2048 bits by default.
- [Kurt Roeckx]
-
- *) Added command 'openssl kdf' that uses the EVP_KDF API.
- [Shane Lontis]
-
- *) Added command 'openssl mac' that uses the EVP_MAC API.
- [Shane Lontis]
-
- *) Added OPENSSL_info() to get diverse built-in OpenSSL data, such
- as default directories. Also added the command 'openssl info'
- for scripting purposes.
- [Richard Levitte]
-
- *) The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have been
- deprecated. These undocumented functions were never integrated into the EVP
- layer and implement the AES Infinite Garble Extension (IGE) mode and AES
- Bi-directional IGE mode. These modes were never formally standardised and
- usage of these functions is believed to be very small. In particular
- AES_bi_ige_encrypt() has a known bug. It accepts 2 AES keys, but only one
- is ever used. The security implications are believed to be minimal, but
- this issue was never fixed for backwards compatibility reasons. New code
- should not use these modes.
- [Matt Caswell]
-
- *) Add prediction resistance to the DRBG reseeding process.
- [Paul Dale]
-
- *) Limit the number of blocks in a data unit for AES-XTS to 2^20 as
- mandated by IEEE Std 1619-2018.
- [Paul Dale]
-
- *) Added newline escaping functionality to a filename when using openssl dgst.
- This output format is to replicate the output format found in the '*sum'
- checksum programs. This aims to preserve backward compatibility.
- [Matt Eaton, Richard Levitte, and Paul Dale]
-
- *) Removed the heartbeat message in DTLS feature, as it has very
- little usage and doesn't seem to fulfill a valuable purpose.
- The configuration option is now deprecated.
- [Richard Levitte]
-
- *) Changed the output of 'openssl {digestname} < file' to display the
- digest name in its output.
- [Richard Levitte]
-
- *) Added a new generic trace API which provides support for enabling
- instrumentation through trace output. This feature is mainly intended
- as an aid for developers and is disabled by default. To utilize it,
- OpenSSL needs to be configured with the `enable-trace` option.
-
- If the tracing API is enabled, the application can activate trace output
- by registering BIOs as trace channels for a number of tracing and debugging
- categories.
-
- The 'openssl' application has been expanded to enable any of the types
- available via environment variables defined by the user, and serves as
- one possible example on how to use this functionality.
- [Richard Levitte & Matthias St. Pierre]
-
- *) Added build tests for C++. These are generated files that only do one
- thing, to include one public OpenSSL head file each. This tests that
- the public header files can be usefully included in a C++ application.
-
- This test isn't enabled by default. It can be enabled with the option
- 'enable-buildtest-c++'.
- [Richard Levitte]
-
- *) Add Single Step KDF (EVP_KDF_SS) to EVP_KDF.
- [Shane Lontis]
-
- *) Add KMAC to EVP_MAC.
- [Shane Lontis]
-
- *) Added property based algorithm implementation selection framework to
- the core.
- [Paul Dale]
-
- *) Added SCA hardening for modular field inversion in EC_GROUP through
- a new dedicated field_inv() pointer in EC_METHOD.
- This also addresses a leakage affecting conversions from projective
- to affine coordinates.
- [Billy Bob Brumley, Nicola Tuveri]
-
- *) Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
- implementations. This includes an EVP_PKEY to EVP_KDF bridge for
- those algorithms that were already supported through the EVP_PKEY API
- (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
- and scrypt are now wrappers that call EVP_KDF.
- [David Makepeace]
-
- *) Build devcrypto engine as a dynamic engine.
- [Eneas U de Queiroz]
-
- *) Add keyed BLAKE2 to EVP_MAC.
- [Antoine Salon]
-
- *) Fix a bug in the computation of the endpoint-pair shared secret used
- by DTLS over SCTP. This breaks interoperability with older versions
- of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
- switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
- interoperability with such broken implementations. However, enabling
- this switch breaks interoperability with correct implementations.
-
- *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
- re-used X509_PUBKEY object if the second PUBKEY is malformed.
- [Bernd Edlinger]
-
- *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
- [Richard Levitte]
-
- *) Change the license to the Apache License v2.0.
- [Richard Levitte]
-
- *) Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
-
- o Major releases (indicated by incrementing the MAJOR release number)
- may introduce incompatible API/ABI changes.
- o Minor releases (indicated by incrementing the MINOR release number)
- may introduce new features but retain API/ABI compatibility.
- o Patch releases (indicated by incrementing the PATCH number)
- are intended for bug fixes and other improvements of existing
- features only (like improving performance or adding documentation)
- and retain API/ABI compatibility.
- [Richard Levitte]
-
- *) Add support for RFC5297 SIV mode (siv128), including AES-SIV.
- [Todd Short]
-
- *) Remove the 'dist' target and add a tarball building script. The
- 'dist' target has fallen out of use, and it shouldn't be
- necessary to configure just to create a source distribution.
- [Richard Levitte]
-
- *) Recreate the OS390-Unix config target. It no longer relies on a
- special script like it did for OpenSSL pre-1.1.0.
- [Richard Levitte]
-
- *) Instead of having the source directories listed in Configure, add
- a 'build.info' keyword SUBDIRS to indicate what sub-directories to
- look into.
- [Richard Levitte]
-
- *) Add GMAC to EVP_MAC.
- [Paul Dale]
-
- *) Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
- [Richard Levitte]
-
- *) Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
- implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
- to facilitate the continued use of MACs through raw private keys in
- functionality such as EVP_DigestSign* and EVP_DigestVerify*.
- [Richard Levitte]
-
- *) Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
- should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
- [Antoine Salon]
-
- *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
- the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
- are retained for backwards compatibility.
- [Antoine Salon]
-
- *) AES-XTS mode now enforces that its two keys are different to mitigate
- the attacked described in "Efficient Instantiations of Tweakable
- Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
- Details of this attack can be obtained from:
- http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf
- [Paul Dale]
-
- *) Rename the object files, i.e. give them other names than in previous
- versions. Their names now include the name of the final product, as
- well as its type mnemonic (bin, lib, shlib).
- [Richard Levitte]
-
- *) Added new option for 'openssl list', '-objects', which will display the
- list of built in objects, i.e. OIDs with names.
- [Richard Levitte]
-
- *) Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
- improves application performance by removing data copies and providing
- applications with zero-copy system calls such as sendfile and splice.
- [Boris Pismenny]
-
- Changes between 1.1.1a and 1.1.1b [xx XXX xxxx]
-
- *) Change the info callback signals for the start and end of a post-handshake
- message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
- and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
- confused by this and assume that a TLSv1.2 renegotiation has started. This
- can break KeyUpdate handling. Instead we no longer signal the start and end
- of a post handshake message exchange (although the messages themselves are
- still signalled). This could break some applications that were expecting
- the old signals. However without this KeyUpdate is not usable for many
- applications.
- [Matt Caswell]
-
- Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
-
- *) Timing vulnerability in DSA signature generation
-
- The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
- timing side channel attack. An attacker could use variations in the signing
- algorithm to recover the private key.
-
- This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
- (CVE-2018-0734)
- [Paul Dale]
-
- *) Timing vulnerability in ECDSA signature generation
-
- The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
- timing side channel attack. An attacker could use variations in the signing
- algorithm to recover the private key.
-
- This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
- (CVE-2018-0735)
- [Paul Dale]
-
- *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
- if its length exceeds 4096 bytes. The limit has been raised to a buffer size
- of two gigabytes and the error handling improved.
-
- This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
- categorized as a normal bug, not a security issue, because the DRBG reseeds
- automatically and is fully functional even without additional randomness
- provided by the application.
-
- Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
-
- *) Add a new ClientHello callback. Provides a callback interface that gives
- the application the ability to adjust the nascent SSL object at the
- earliest stage of ClientHello processing, immediately after extensions have
- been collected but before they have been processed. In particular, this
- callback can adjust the supported TLS versions in response to the contents
- of the ClientHello
- [Benjamin Kaduk]
-
- *) Add SM2 base algorithm support.
- [Jack Lloyd]
-
- *) s390x assembly pack: add (improved) hardware-support for the following
- cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
- aes-cfb/cfb8, aes-ecb.
- [Patrick Steuer]
-
- *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
- parameter is no longer accepted, as it leads to a corrupt table. NULL
- pem_str is reserved for alias entries only.
- [Richard Levitte]
-
- *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
- step for prime curves. The new implementation is based on formulae from
- differential addition-and-doubling in homogeneous projective coordinates
- from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
- against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
- and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
- to work in projective coordinates.
- [Billy Bob Brumley, Nicola Tuveri]
-
- *) Change generating and checking of primes so that the error rate of not
- being prime depends on the intended use based on the size of the input.
- For larger primes this will result in more rounds of Miller-Rabin.
- The maximal error rate for primes with more than 1080 bits is lowered
- to 2^-128.
- [Kurt Roeckx, Annie Yousar]
-
- *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
- [Kurt Roeckx]
-
- *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
- moving between systems, and to avoid confusion when a Windows build is
- done with mingw vs with MSVC. For POSIX installs, there's still a
- symlink or copy named 'tsget' to avoid that confusion as well.
- [Richard Levitte]
-
- *) Revert blinding in ECDSA sign and instead make problematic addition
- length-invariant. Switch even to fixed-length Montgomery multiplication.
- [Andy Polyakov]
-
- *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
- step for binary curves. The new implementation is based on formulae from
- differential addition-and-doubling in mixed Lopez-Dahab projective
- coordinates, modified to independently blind the operands.
- [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
-
- *) Add a scaffold to optionally enhance the Montgomery ladder implementation
- for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
- EC_METHODs to implement their own specialized "ladder step", to take
- advantage of more favorable coordinate systems or more efficient
- differential addition-and-doubling algorithms.
- [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
-
- *) Modified the random device based seed sources to keep the relevant
- file descriptors open rather than reopening them on each access.
- This allows such sources to operate in a chroot() jail without
- the associated device nodes being available. This behaviour can be
- controlled using RAND_keep_random_devices_open().
- [Paul Dale]
-
- *) Numerous side-channel attack mitigations have been applied. This may have
- performance impacts for some algorithms for the benefit of improved
- security. Specific changes are noted in this change log by their respective
- authors.
- [Matt Caswell]
-
- *) AIX shared library support overhaul. Switch to AIX "natural" way of
- handling shared libraries, which means collecting shared objects of
- different versions and bitnesses in one common archive. This allows to
- mitigate conflict between 1.0 and 1.1 side-by-side installations. It
- doesn't affect the way 3rd party applications are linked, only how
- multi-version installation is managed.
- [Andy Polyakov]
-
- *) Make ec_group_do_inverse_ord() more robust and available to other
- EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
- mitigations are applied to the fallback BN_mod_inverse().
- When using this function rather than BN_mod_inverse() directly, new
- EC cryptosystem implementations are then safer-by-default.
- [Billy Bob Brumley]
-
- *) Add coordinate blinding for EC_POINT and implement projective
- coordinate blinding for generic prime curves as a countermeasure to
- chosen point SCA attacks.
- [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
-
- *) Add blinding to ECDSA and DSA signatures to protect against side channel
- attacks discovered by Keegan Ryan (NCC Group).
- [Matt Caswell]
-
- *) Enforce checking in the pkeyutl command line app to ensure that the input
- length does not exceed the maximum supported digest length when performing
- a sign, verify or verifyrecover operation.
- [Matt Caswell]
-
- *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
- I/O in combination with something like select() or poll() will hang. This
- can be turned off again using SSL_CTX_clear_mode().
- Many applications do not properly handle non-application data records, and
- TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
- around the problems in those applications, but can also break some.
- It's recommended to read the manpages about SSL_read(), SSL_write(),
- SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
- SSL_CTX_set_read_ahead() again.
- [Kurt Roeckx]
-
- *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
- now allow empty (zero character) pass phrases.
- [Richard Levitte]
-
- *) Apply blinding to binary field modular inversion and remove patent
- pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
- [Billy Bob Brumley]
-
- *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
- binary and prime elliptic curves.
- [Billy Bob Brumley]
-
- *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
- constant time fixed point multiplication.
- [Billy Bob Brumley]
-
- *) Revise elliptic curve scalar multiplication with timing attack
- defenses: ec_wNAF_mul redirects to a constant time implementation
- when computing fixed point and variable point multiplication (which
- in OpenSSL are mostly used with secret scalars in keygen, sign,
- ECDH derive operations).
- [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García,
- Sohaib ul Hassan]
-
- *) Updated CONTRIBUTING
- [Rich Salz]
-
- *) Updated DRBG / RAND to request nonce and additional low entropy
- randomness from the system.
- [Matthias St. Pierre]
-
- *) Updated 'openssl rehash' to use OpenSSL consistent default.
- [Richard Levitte]
-
- *) Moved the load of the ssl_conf module to libcrypto, which helps
- loading engines that libssl uses before libssl is initialised.
- [Matt Caswell]
-
- *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
- [Matt Caswell]
-
- *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
- [Ingo Schwarze, Rich Salz]
-
- *) Added output of accepting IP address and port for 'openssl s_server'
- [Richard Levitte]
-
- *) Added a new API for TLSv1.3 ciphersuites:
- SSL_CTX_set_ciphersuites()
- SSL_set_ciphersuites()
- [Matt Caswell]
-
- *) Memory allocation failures consistently add an error to the error
- stack.
- [Rich Salz]
-
- *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
- in libcrypto when run as setuid/setgid.
- [Bernd Edlinger]
-
- *) Load any config file by default when libssl is used.
- [Matt Caswell]
-
- *) Added new public header file <openssl/rand_drbg.h> and documentation
- for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
- [Matthias St. Pierre]
-
- *) QNX support removed (cannot find contributors to get their approval
- for the license change).
- [Rich Salz]
-
- *) TLSv1.3 replay protection for early data has been implemented. See the
- SSL_read_early_data() man page for further details.
- [Matt Caswell]
-
- *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
- configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
- below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
- In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
- would otherwise inadvertently disable all TLSv1.3 ciphersuites the
- configuration has been separated out. See the ciphers man page or the
- SSL_CTX_set_ciphersuites() man page for more information.
- [Matt Caswell]
-
- *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
- in responder mode now supports the new "-multi" option, which
- spawns the specified number of child processes to handle OCSP
- requests. The "-timeout" option now also limits the OCSP
- responder's patience to wait to receive the full client request
- on a newly accepted connection. Child processes are respawned
- as needed, and the CA index file is automatically reloaded
- when changed. This makes it possible to run the "ocsp" responder
- as a long-running service, making the OpenSSL CA somewhat more
- feature-complete. In this mode, most diagnostic messages logged
- after entering the event loop are logged via syslog(3) rather than
- written to stderr.
- [Viktor Dukhovni]
-
- *) Added support for X448 and Ed448. Heavily based on original work by
- Mike Hamburg.
- [Matt Caswell]
-
- *) Extend OSSL_STORE with capabilities to search and to narrow the set of
- objects loaded. This adds the functions OSSL_STORE_expect() and
- OSSL_STORE_find() as well as needed tools to construct searches and
- get the search data out of them.
- [Richard Levitte]
-
- *) Support for TLSv1.3 added. Note that users upgrading from an earlier
- version of OpenSSL should review their configuration settings to ensure
- that they are still appropriate for TLSv1.3. For further information see:
- https://wiki.openssl.org/index.php/TLS1.3
- [Matt Caswell]
-
- *) Grand redesign of the OpenSSL random generator
-
- The default RAND method now utilizes an AES-CTR DRBG according to
- NIST standard SP 800-90Ar1. The new random generator is essentially
- a port of the default random generator from the OpenSSL FIPS 2.0
- object module. It is a hybrid deterministic random bit generator
- using an AES-CTR bit stream and which seeds and reseeds itself
- automatically using trusted system entropy sources.
-
- Some of its new features are:
- o Support for multiple DRBG instances with seed chaining.
- o The default RAND method makes use of a DRBG.
- o There is a public and private DRBG instance.
- o The DRBG instances are fork-safe.
- o Keep all global DRBG instances on the secure heap if it is enabled.
- o The public and private DRBG instance are per thread for lock free
- operation
- [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
-
- *) Changed Configure so it only says what it does and doesn't dump
- so much data. Instead, ./configdata.pm should be used as a script
- to display all sorts of configuration data.
- [Richard Levitte]
-
- *) Added processing of "make variables" to Configure.
- [Richard Levitte]
-
- *) Added SHA512/224 and SHA512/256 algorithm support.
- [Paul Dale]
-
- *) The last traces of Netware support, first removed in 1.1.0, have
- now been removed.
- [Rich Salz]
-
- *) Get rid of Makefile.shared, and in the process, make the processing
- of certain files (rc.obj, or the .def/.map/.opt files produced from
- the ordinal files) more visible and hopefully easier to trace and
- debug (or make silent).
- [Richard Levitte]
-
- *) Make it possible to have environment variable assignments as
- arguments to config / Configure.
- [Richard Levitte]
-
- *) Add multi-prime RSA (RFC 8017) support.
- [Paul Yang]
-
- *) Add SM3 implemented according to GB/T 32905-2016
- [ Jack Lloyd <jack.lloyd@ribose.com>,
- Ronald Tse <ronald.tse@ribose.com>,
- Erick Borsboom <erick.borsboom@ribose.com> ]
-
- *) Add 'Maximum Fragment Length' TLS extension negotiation and support
- as documented in RFC6066.
- Based on a patch from Tomasz Moń
- [Filipe Raimundo da Silva]
-
- *) Add SM4 implemented according to GB/T 32907-2016.
- [ Jack Lloyd <jack.lloyd@ribose.com>,
- Ronald Tse <ronald.tse@ribose.com>,
- Erick Borsboom <erick.borsboom@ribose.com> ]
-
- *) Reimplement -newreq-nodes and ERR_error_string_n; the
- original author does not agree with the license change.
- [Rich Salz]
-
- *) Add ARIA AEAD TLS support.
- [Jon Spillett]
-
- *) Some macro definitions to support VS6 have been removed. Visual
- Studio 6 has not worked since 1.1.0
- [Rich Salz]
-
- *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
- without clearing the errors.
- [Richard Levitte]
-
- *) Add "atfork" functions. If building on a system that without
- pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
- requirements. The RAND facility now uses/requires this.
- [Rich Salz]
-
- *) Add SHA3.
- [Andy Polyakov]
-
- *) The UI API becomes a permanent and integral part of libcrypto, i.e.
- not possible to disable entirely. However, it's still possible to
- disable the console reading UI method, UI_OpenSSL() (use UI_null()
- as a fallback).
-
- To disable, configure with 'no-ui-console'. 'no-ui' is still
- possible to use as an alias. Check at compile time with the
- macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
- possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
- [Richard Levitte]
-
- *) Add a STORE module, which implements a uniform and URI based reader of
- stores that can contain keys, certificates, CRLs and numerous other
- objects. The main API is loosely based on a few stdio functions,
- and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
- OSSL_STORE_error and OSSL_STORE_close.
- The implementation uses backends called "loaders" to implement arbitrary
- URI schemes. There is one built in "loader" for the 'file' scheme.
- [Richard Levitte]
-
- *) Add devcrypto engine. This has been implemented against cryptodev-linux,
- then adjusted to work on FreeBSD 8.4 as well.
- Enable by configuring with 'enable-devcryptoeng'. This is done by default
- on BSD implementations, as cryptodev.h is assumed to exist on all of them.
- [Richard Levitte]
-
- *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
- util/mkerr.pl, which is adapted to allow those prefixes, leading to
- error code calls like this:
-
- OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
-
- With this change, we claim the namespaces OSSL and OPENSSL in a manner
- that can be encoded in C. For the foreseeable future, this will only
- affect new modules.
- [Richard Levitte and Tim Hudson]
-
- *) Removed BSD cryptodev engine.
- [Rich Salz]
-
- *) Add a build target 'build_all_generated', to build all generated files
- and only that. This can be used to prepare everything that requires
- things like perl for a system that lacks perl and then move everything
- to that system and do the rest of the build there.
- [Richard Levitte]
-
- *) In the UI interface, make it possible to duplicate the user data. This
- can be used by engines that need to retain the data for a longer time
- than just the call where this user data is passed.
- [Richard Levitte]
-
- *) Ignore the '-named_curve auto' value for compatibility of applications
- with OpenSSL 1.0.2.
- [Tomas Mraz <tmraz@fedoraproject.org>]
-
- *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
- bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
- alerts across multiple records (some of which could be empty). In practice
- it make no sense to send an empty alert record, or to fragment one. TLSv1.3
- prohibits this altogether and other libraries (BoringSSL, NSS) do not
- support this at all. Supporting it adds significant complexity to the
- record layer, and its removal is unlikely to cause interoperability
- issues.
- [Matt Caswell]
-
- *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
- with Z. These are meant to replace LONG and ZLONG and to be size safe.
- The use of LONG and ZLONG is discouraged and scheduled for deprecation
- in OpenSSL 1.2.0.
- [Richard Levitte]
-
- *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
- 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
- [Richard Levitte, Andy Polyakov]
-
- *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
- does for RSA, etc.
- [Richard Levitte]
-
- *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
- platform rather than 'mingw'.
- [Richard Levitte]
-
- *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
- success if they are asked to add an object which already exists
- in the store. This change cascades to other functions which load
- certificates and CRLs.
- [Paul Dale]
-
- *) x86_64 assembly pack: annotate code with DWARF CFI directives to
- facilitate stack unwinding even from assembly subroutines.
- [Andy Polyakov]
-
- *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
- Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
- [Richard Levitte]
-
- *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
- VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
- which is the minimum version we support.
- [Richard Levitte]
-
- *) Certificate time validation (X509_cmp_time) enforces stricter
- compliance with RFC 5280. Fractional seconds and timezone offsets
- are no longer allowed.
- [Emilia Käsper]
-
- *) Add support for ARIA
- [Paul Dale]
-
- *) s_client will now send the Server Name Indication (SNI) extension by
- default unless the new "-noservername" option is used. The server name is
- based on the host provided to the "-connect" option unless overridden by
- using "-servername".
- [Matt Caswell]
-
- *) Add support for SipHash
- [Todd Short]
-
- *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
- or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
- prevent issues where no progress is being made and the peer continually
- sends unrecognised record types, using up resources processing them.
- [Matt Caswell]
-
- *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
- using the algorithm defined in
- https://www.akkadia.org/drepper/SHA-crypt.txt
- [Richard Levitte]
-
- *) Heartbeat support has been removed; the ABI is changed for now.
- [Richard Levitte, Rich Salz]
-
- *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
- [Emilia Käsper]
-
- *) The RSA "null" method, which was partially supported to avoid patent
- issues, has been replaced to always returns NULL.
- [Rich Salz]
-
-
- Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
-
- *) Client DoS due to large DH parameter
-
- During key agreement in a TLS handshake using a DH(E) based ciphersuite a
- malicious server can send a very large prime value to the client. This will
- cause the client to spend an unreasonably long period of time generating a
- key for this prime resulting in a hang until the client has finished. This
- could be exploited in a Denial Of Service attack.
-
- This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
- (CVE-2018-0732)
- [Guido Vranken]
-
- *) Cache timing vulnerability in RSA Key Generation
-
- The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
- a cache timing side channel attack. An attacker with sufficient access to
- mount cache timing attacks during the RSA key generation process could
- recover the private key.
-
- This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
- Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
- (CVE-2018-0737)
- [Billy Brumley]
-
- *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
- parameter is no longer accepted, as it leads to a corrupt table. NULL
- pem_str is reserved for alias entries only.
- [Richard Levitte]
-
- *) Revert blinding in ECDSA sign and instead make problematic addition
- length-invariant. Switch even to fixed-length Montgomery multiplication.
- [Andy Polyakov]
-
- *) Change generating and checking of primes so that the error rate of not
- being prime depends on the intended use based on the size of the input.
- For larger primes this will result in more rounds of Miller-Rabin.
- The maximal error rate for primes with more than 1080 bits is lowered
- to 2^-128.
- [Kurt Roeckx, Annie Yousar]
-
- *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
- [Kurt Roeckx]
-
- *) Add blinding to ECDSA and DSA signatures to protect against side channel
- attacks discovered by Keegan Ryan (NCC Group).
- [Matt Caswell]
-
- *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
- now allow empty (zero character) pass phrases.
- [Richard Levitte]
-
- *) Certificate time validation (X509_cmp_time) enforces stricter
- compliance with RFC 5280. Fractional seconds and timezone offsets
- are no longer allowed.
- [Emilia Käsper]
-
- *) Fixed a text canonicalisation bug in CMS
-
- Where a CMS detached signature is used with text content the text goes
- through a canonicalisation process first prior to signing or verifying a
- signature. This process strips trailing space at the end of lines, converts
- line terminators to CRLF and removes additional trailing line terminators
- at the end of a file. A bug in the canonicalisation process meant that
- some characters, such as form-feed, were incorrectly treated as whitespace
- and removed. This is contrary to the specification (RFC5485). This fix
- could mean that detached text data signed with an earlier version of
- OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
- signed with a fixed OpenSSL may fail to verify with an earlier version of
- OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
- and use the "-binary" flag (for the "cms" command line application) or set
- the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
- [Matt Caswell]
-
- Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
-
- *) Constructed ASN.1 types with a recursive definition could exceed the stack
-
- Constructed ASN.1 types with a recursive definition (such as can be found
- in PKCS7) could eventually exceed the stack given malicious input with
- excessive recursion. This could result in a Denial Of Service attack. There
- are no such structures used within SSL/TLS that come from untrusted sources
- so this is considered safe.
-
- This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
- project.
- (CVE-2018-0739)
- [Matt Caswell]
-
- *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
-
- Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
- effectively reduced to only comparing the least significant bit of each
- byte. This allows an attacker to forge messages that would be considered as
- authenticated in an amount of tries lower than that guaranteed by the
- security claims of the scheme. The module can only be compiled by the
- HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
-
- This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
- (IBM).
- (CVE-2018-0733)
- [Andy Polyakov]
-
- *) Add a build target 'build_all_generated', to build all generated files
- and only that. This can be used to prepare everything that requires
- things like perl for a system that lacks perl and then move everything
- to that system and do the rest of the build there.
- [Richard Levitte]
-
- *) Backport SSL_OP_NO_RENGOTIATION
-
- OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
- (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
- changes this is no longer possible in 1.1.0. Therefore the new
- SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
- 1.1.0 to provide equivalent functionality.
-
- Note that if an application built against 1.1.0h headers (or above) is run
- using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
- accepted but nothing will happen, i.e. renegotiation will not be prevented.
- [Matt Caswell]
-
- *) Removed the OS390-Unix config target. It relied on a script that doesn't
- exist.
- [Rich Salz]
-
- *) rsaz_1024_mul_avx2 overflow bug on x86_64
-
- There is an overflow bug in the AVX2 Montgomery multiplication procedure
- used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
- Analysis suggests that attacks against RSA and DSA as a result of this
- defect would be very difficult to perform and are not believed likely.
- Attacks against DH1024 are considered just feasible, because most of the
- work necessary to deduce information about a private key may be performed
- offline. The amount of resources required for such an attack would be
- significant. However, for an attack on TLS to be meaningful, the server
- would have to share the DH1024 private key among multiple clients, which is
- no longer an option since CVE-2016-0701.
-
- This only affects processors that support the AVX2 but not ADX extensions
- like Intel Haswell (4th generation).
-
- This issue was reported to OpenSSL by David Benjamin (Google). The issue
- was originally found via the OSS-Fuzz project.
- (CVE-2017-3738)
- [Andy Polyakov]
-
- Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
-
- *) bn_sqrx8x_internal carry bug on x86_64
-
- There is a carry propagating bug in the x86_64 Montgomery squaring
- procedure. No EC algorithms are affected. Analysis suggests that attacks
- against RSA and DSA as a result of this defect would be very difficult to
- perform and are not believed likely. Attacks against DH are considered just
- feasible (although very difficult) because most of the work necessary to
- deduce information about a private key may be performed offline. The amount
- of resources required for such an attack would be very significant and
- likely only accessible to a limited number of attackers. An attacker would
- additionally need online access to an unpatched system using the target
- private key in a scenario with persistent DH parameters and a private
- key that is shared between multiple clients.
-
- This only affects processors that support the BMI1, BMI2 and ADX extensions
- like Intel Broadwell (5th generation) and later or AMD Ryzen.
-
- This issue was reported to OpenSSL by the OSS-Fuzz project.
- (CVE-2017-3736)
- [Andy Polyakov]
-
- *) Malformed X.509 IPAddressFamily could cause OOB read
-
- If an X.509 certificate has a malformed IPAddressFamily extension,
- OpenSSL could do a one-byte buffer overread. The most likely result
- would be an erroneous display of the certificate in text format.
-
- This issue was reported to OpenSSL by the OSS-Fuzz project.
- (CVE-2017-3735)
- [Rich Salz]
-
- Changes between 1.1.0e and 1.1.0f [25 May 2017]
-
- *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
- platform rather than 'mingw'.
- [Richard Levitte]
-
- *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
- VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
- which is the minimum version we support.
- [Richard Levitte]
-
- Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
-
- *) Encrypt-Then-Mac renegotiation crash
-
- During a renegotiation handshake if the Encrypt-Then-Mac extension is
- negotiated where it was not in the original handshake (or vice-versa) then
- this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
- and servers are affected.
-
- This issue was reported to OpenSSL by Joe Orton (Red Hat).
- (CVE-2017-3733)
- [Matt Caswell]
-
- Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
-
- *) Truncated packet could crash via OOB read
-
- If one side of an SSL/TLS path is running on a 32-bit host and a specific
- cipher is being used, then a truncated packet can cause that host to
- perform an out-of-bounds read, usually resulting in a crash.
-
- This issue was reported to OpenSSL by Robert Święcki of Google.
- (CVE-2017-3731)
- [Andy Polyakov]
-
- *) Bad (EC)DHE parameters cause a client crash
-
- If a malicious server supplies bad parameters for a DHE or ECDHE key
- exchange then this can result in the client attempting to dereference a
- NULL pointer leading to a client crash. This could be exploited in a Denial
- of Service attack.
-
- This issue was reported to OpenSSL by Guido Vranken.
- (CVE-2017-3730)
- [Matt Caswell]
-
- *) BN_mod_exp may produce incorrect results on x86_64
-
- There is a carry propagating bug in the x86_64 Montgomery squaring
- procedure. No EC algorithms are affected. Analysis suggests that attacks
- against RSA and DSA as a result of this defect would be very difficult to
- perform and are not believed likely. Attacks against DH are considered just
- feasible (although very difficult) because most of the work necessary to
- deduce information about a private key may be performed offline. The amount
- of resources required for such an attack would be very significant and
- likely only accessible to a limited number of attackers. An attacker would
- additionally need online access to an unpatched system using the target
- private key in a scenario with persistent DH parameters and a private
- key that is shared between multiple clients. For example this can occur by
- default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
- similar to CVE-2015-3193 but must be treated as a separate problem.
-
- This issue was reported to OpenSSL by the OSS-Fuzz project.
- (CVE-2017-3732)
- [Andy Polyakov]
+OpenSSL CHANGES
+===============
+
+This is a high-level summary of the most important changes.
+For a full list of changes, see the [git commit log][log] and
+pick the appropriate release branch.
+
+ [log]: https://github.com/openssl/openssl/commits/
+
+### Changes between 1.1.1 and 3.0.0 [xx XXX xxxx] ###
+
+ * Removed include/openssl/opensslconf.h.in and replaced it with
+ include/openssl/configuration.h.in, which differs in not including
+ <openssl/macros.h>. A short header include/openssl/opensslconf.h
+ was added to include both.
+
+ This allows internal hacks where one might need to modify the set
+ of configured macros, for example this if deprecated symbols are
+ still supposed to be available internally:
+
+ #include <openssl/configuration.h>
+
+ #undef OPENSSL_NO_DEPRECATED
+ #define OPENSSL_SUPPRESS_DEPRECATED
+
+ #include <openssl/macros.h>
+
+ This should not be used by applications that use the exported
+ symbols, as that will lead to linking errors.
+ *Richard Levitte*
+
+* Fixed an an overflow bug in the x64_64 Montgomery squaring procedure
+ used in exponentiation with 512-bit moduli. No EC algorithms are
+ affected. Analysis suggests that attacks against 2-prime RSA1024,
+ 3-prime RSA1536, and DSA1024 as a result of this defect would be very
+ difficult to perform and are not believed likely. Attacks against DH512
+ are considered just feasible. However, for an attack the target would
+ have to re-use the DH512 private key, which is not recommended anyway.
+ Also applications directly using the low level API BN_mod_exp may be
+ affected if they use BN_FLG_CONSTTIME.
+ (CVE-2019-1551)
+ *Andy Polyakov*
+
+* Most memory-debug features have been deprecated, and the functionality
+ replaced with no-ops.
+ *Rich Salz*
+
+* Most common options (such as -rand/-writerand, TLS version control, etc)
+ were refactored and point to newly-enhanced descriptions in openssl.pod
+ *Rich Salz*
+
+* Introduced a new method type and API, OSSL_SERIALIZER, to
+ represent generic serializers. An implementation is expected to
+ be able to serialize an object associated with a given name (such
+ as an algorithm name for an asymmetric key) into forms given by
+ implementation properties.
+
+ Serializers are primarily used from inside libcrypto, through
+ calls to functions like EVP_PKEY_print_private(),
+ PEM_write_bio_PrivateKey() and similar.
+
+ Serializers are specified in such a way that they can be made to
+ directly handle the provider side portion of an object, if this
+ provider side part comes from the same provider as the serializer
+ itself, but can also be made to handle objects in parametrized
+ form (as an OSSL_PARAM array of data). This allows a provider to
+ offer generic serializers as a service for any other provider.
+
+ *Richard Levitte*
+
+ * Added a .pragma directive to the syntax of configuration files, to
+ allow varying behavior in a supported and predictable manner.
+ Currently added pragma:
+
+ .pragma dollarid:on
+
+ This allows dollar signs to be a keyword character unless it's
+ followed by a opening brace or parenthesis. This is useful for
+ platforms where dollar signs are commonly used in names, such as
+ volume names and system directory names on VMS.
+
+ *Richard Levitte*
+
+ * Added functionality to create an EVP_PKEY from user data. This
+ is effectively the same as creating a RSA, DH or DSA object and
+ then assigning them to an EVP_PKEY, but directly using algorithm
+ agnostic EVP functions. A benefit is that this should be future
+ proof for public key algorithms to come.
+
+ *Richard Levitte*
- Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
-
- *) ChaCha20/Poly1305 heap-buffer-overflow
-
- TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
- a DoS attack by corrupting larger payloads. This can result in an OpenSSL
- crash. This issue is not considered to be exploitable beyond a DoS.
-
- This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
- (CVE-2016-7054)
- [Richard Levitte]
-
- *) CMS Null dereference
-
- Applications parsing invalid CMS structures can crash with a NULL pointer
- dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
- type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
- structure callback if an attempt is made to free certain invalid encodings.
- Only CHOICE structures using a callback which do not handle NULL value are
- affected.
-
- This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
- (CVE-2016-7053)
- [Stephen Henson]
-
- *) Montgomery multiplication may produce incorrect results
-
- There is a carry propagating bug in the Broadwell-specific Montgomery
- multiplication procedure that handles input lengths divisible by, but
- longer than 256 bits. Analysis suggests that attacks against RSA, DSA
- and DH private keys are impossible. This is because the subroutine in
- question is not used in operations with the private key itself and an input
- of the attacker's direct choice. Otherwise the bug can manifest itself as
- transient authentication and key negotiation failures or reproducible
- erroneous outcome of public-key operations with specially crafted input.
- Among EC algorithms only Brainpool P-512 curves are affected and one
- presumably can attack ECDH key negotiation. Impact was not analyzed in
- detail, because pre-requisites for attack are considered unlikely. Namely
- multiple clients have to choose the curve in question and the server has to
- share the private key among them, neither of which is default behaviour.
- Even then only clients that chose the curve will be affected.
-
- This issue was publicly reported as transient failures and was not
- initially recognized as a security issue. Thanks to Richard Morgan for
- providing reproducible case.
- (CVE-2016-7055)
- [Andy Polyakov]
-
- *) Removed automatic addition of RPATH in shared libraries and executables,
- as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
- [Richard Levitte]
-
- Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
-
- *) Fix Use After Free for large message sizes
-
- The patch applied to address CVE-2016-6307 resulted in an issue where if a
- message larger than approx 16k is received then the underlying buffer to
- store the incoming message is reallocated and moved. Unfortunately a
- dangling pointer to the old location is left which results in an attempt to
- write to the previously freed location. This is likely to result in a
- crash, however it could potentially lead to execution of arbitrary code.
-
- This issue only affects OpenSSL 1.1.0a.
-
- This issue was reported to OpenSSL by Robert Święcki.
- (CVE-2016-6309)
- [Matt Caswell]
-
- Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
-
- *) OCSP Status Request extension unbounded memory growth
-
- A malicious client can send an excessively large OCSP Status Request
- extension. If that client continually requests renegotiation, sending a
- large OCSP Status Request extension each time, then there will be unbounded
- memory growth on the server. This will eventually lead to a Denial Of
- Service attack through memory exhaustion. Servers with a default
- configuration are vulnerable even if they do not support OCSP. Builds using
- the "no-ocsp" build time option are not affected.
-
- This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
- (CVE-2016-6304)
- [Matt Caswell]
-
- *) SSL_peek() hang on empty record
-
- OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
- sends an empty record. This could be exploited by a malicious peer in a
- Denial Of Service attack.
-
- This issue was reported to OpenSSL by Alex Gaynor.
- (CVE-2016-6305)
- [Matt Caswell]
-
- *) Excessive allocation of memory in tls_get_message_header() and
- dtls1_preprocess_fragment()
-
- A (D)TLS message includes 3 bytes for its length in the header for the
- message. This would allow for messages up to 16Mb in length. Messages of
- this length are excessive and OpenSSL includes a check to ensure that a
- peer is sending reasonably sized messages in order to avoid too much memory
- being consumed to service a connection. A flaw in the logic of version
- 1.1.0 means that memory for the message is allocated too early, prior to
- the excessive message length check. Due to way memory is allocated in
- OpenSSL this could mean an attacker could force up to 21Mb to be allocated
- to service a connection. This could lead to a Denial of Service through
- memory exhaustion. However, the excessive message length check still takes
- place, and this would cause the connection to immediately fail. Assuming
- that the application calls SSL_free() on the failed connection in a timely
- manner then the 21Mb of allocated memory will then be immediately freed
- again. Therefore the excessive memory allocation will be transitory in
- nature. This then means that there is only a security impact if:
-
- 1) The application does not call SSL_free() in a timely manner in the event
- that the connection fails
- or
- 2) The application is working in a constrained environment where there is
- very little free memory
- or
- 3) The attacker initiates multiple connection attempts such that there are
- multiple connections in a state where memory has been allocated for the
- connection; SSL_free() has not yet been called; and there is insufficient
- memory to service the multiple requests.
-
- Except in the instance of (1) above any Denial Of Service is likely to be
- transitory because as soon as the connection fails the memory is
- subsequently freed again in the SSL_free() call. However there is an
- increased risk during this period of application crashes due to the lack of
- memory - which would then mean a more serious Denial of Service.
-
- This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
- (CVE-2016-6307 and CVE-2016-6308)
- [Matt Caswell]
-
- *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
- had to be removed. Primary reason is that vendor assembler can't
- assemble our modules with -KPIC flag. As result it, assembly
- support, was not even available as option. But its lack means
- lack of side-channel resistant code, which is incompatible with
- security by todays standards. Fortunately gcc is readily available
- prepackaged option, which we firmly point at...
- [Andy Polyakov]
-
- Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
-
- *) Windows command-line tool supports UTF-8 opt-in option for arguments
- and console input. Setting OPENSSL_WIN32_UTF8 environment variable
- (to any value) allows Windows user to access PKCS#12 file generated
- with Windows CryptoAPI and protected with non-ASCII password, as well
- as files generated under UTF-8 locale on Linux also protected with
- non-ASCII password.
- [Andy Polyakov]
-
- *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
- have been disabled by default and removed from DEFAULT, just like RC4.
- See the RC4 item below to re-enable both.
- [Rich Salz]
-
- *) The method for finding the storage location for the Windows RAND seed file
- has changed. First we check %RANDFILE%. If that is not set then we check
- the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
- all else fails we fall back to C:\.
- [Matt Caswell]
-
- *) The EVP_EncryptUpdate() function has had its return type changed from void
- to int. A return of 0 indicates and error while a return of 1 indicates
- success.
- [Matt Caswell]
-
- *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
- DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
- off the constant time implementation for RSA, DSA and DH have been made
- no-ops and deprecated.
- [Matt Caswell]
-
- *) Windows RAND implementation was simplified to only get entropy by
- calling CryptGenRandom(). Various other RAND-related tickets
- were also closed.
- [Joseph Wylie Yandle, Rich Salz]
-
- *) The stack and lhash API's were renamed to start with OPENSSL_SK_
- and OPENSSL_LH_, respectively. The old names are available
- with API compatibility. They new names are now completely documented.
- [Rich Salz]
-
- *) Unify TYPE_up_ref(obj) methods signature.
- SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
- X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
- int (instead of void) like all others TYPE_up_ref() methods.
- So now these methods also check the return value of CRYPTO_atomic_add(),
- and the validity of object reference counter.
- [fdasilvayy@gmail.com]
-
- *) With Windows Visual Studio builds, the .pdb files are installed
- alongside the installed libraries and executables. For a static
- library installation, ossl_static.pdb is the associate compiler
- generated .pdb file to be used when linking programs.
- [Richard Levitte]
-
- *) Remove openssl.spec. Packaging files belong with the packagers.
- [Richard Levitte]
-
- *) Automatic Darwin/OSX configuration has had a refresh, it will now
- recognise x86_64 architectures automatically. You can still decide
- to build for a different bitness with the environment variable
- KERNEL_BITS (can be 32 or 64), for example:
-
- KERNEL_BITS=32 ./config
-
- [Richard Levitte]
-
- *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
- 256 bit AES and HMAC with SHA256.
- [Steve Henson]
-
- *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
- [Andy Polyakov]
-
- *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
- [Rich Salz]
-
- *) To enable users to have their own config files and build file templates,
- Configure looks in the directory indicated by the environment variable
- OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
- directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
- name and is used as is.
- [Richard Levitte]
-
- *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
- X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
- X509_CERT_FILE_CTX was removed.
- [Rich Salz]
-
- *) "shared" builds are now the default. To create only static libraries use
- the "no-shared" Configure option.
- [Matt Caswell]
-
- *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
- All of these option have not worked for some while and are fundamental
- algorithms.
- [Matt Caswell]
-
- *) Make various cleanup routines no-ops and mark them as deprecated. Most
- global cleanup functions are no longer required because they are handled
- via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
- Explicitly de-initing can cause problems (e.g. where a library that uses
- OpenSSL de-inits, but an application is still using it). The affected
- functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
- EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
- RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
- COMP_zlib_cleanup().
- [Matt Caswell]
-
- *) --strict-warnings no longer enables runtime debugging options
- such as REF_DEBUG. Instead, debug options are automatically
- enabled with '--debug' builds.
- [Andy Polyakov, Emilia Käsper]
-
- *) Made DH and DH_METHOD opaque. The structures for managing DH objects
- have been moved out of the public header files. New functions for managing
- these have been added.
- [Matt Caswell]
-
- *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
- objects have been moved out of the public header files. New
- functions for managing these have been added.
- [Richard Levitte]
-
- *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
- have been moved out of the public header files. New functions for managing
- these have been added.
- [Matt Caswell]
-
- *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
- moved out of the public header files. New functions for managing these
- have been added.
- [Matt Caswell]
-
- *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
- [Matt Caswell]
-
- *) Removed the mk1mf build scripts.
- [Richard Levitte]
-
- *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
- it is always safe to #include a header now.
- [Rich Salz]
-
- *) Removed the aged BC-32 config and all its supporting scripts
- [Richard Levitte]
-
- *) Removed support for Ultrix, Netware, and OS/2.
- [Rich Salz]
-
- *) Add support for HKDF.
- [Alessandro Ghedini]
-
- *) Add support for blake2b and blake2s
- [Bill Cox]
-
- *) Added support for "pipelining". Ciphers that have the
- EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
- encryptions/decryptions simultaneously. There are currently no built-in
- ciphers with this property but the expectation is that engines will be able
- to offer it to significantly improve throughput. Support has been extended
- into libssl so that multiple records for a single connection can be
- processed in one go (for >=TLS 1.1).
- [Matt Caswell]
-
- *) Added the AFALG engine. This is an async capable engine which is able to
- offload work to the Linux kernel. In this initial version it only supports
- AES128-CBC. The kernel must be version 4.1.0 or greater.
- [Catriona Lucey]
-
- *) OpenSSL now uses a new threading API. It is no longer necessary to
- set locking callbacks to use OpenSSL in a multi-threaded environment. There
- are two supported threading models: pthreads and windows threads. It is
- also possible to configure OpenSSL at compile time for "no-threads". The
- old threading API should no longer be used. The functions have been
- replaced with "no-op" compatibility macros.
- [Alessandro Ghedini, Matt Caswell]
-
- *) Modify behavior of ALPN to invoke callback after SNI/servername
- callback, such that updates to the SSL_CTX affect ALPN.
- [Todd Short]
-
- *) Add SSL_CIPHER queries for authentication and key-exchange.
- [Todd Short]
-
- *) Changes to the DEFAULT cipherlist:
- - Prefer (EC)DHE handshakes over plain RSA.
- - Prefer AEAD ciphers over legacy ciphers.
- - Prefer ECDSA over RSA when both certificates are available.
- - Prefer TLSv1.2 ciphers/PRF.
- - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
- default cipherlist.
- [Emilia Käsper]
-
- *) Change the ECC default curve list to be this, in order: x25519,
- secp256r1, secp521r1, secp384r1.
- [Rich Salz]
-
- *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
- disabled by default. They can be re-enabled using the
- enable-weak-ssl-ciphers option to Configure.
- [Matt Caswell]
-
- *) If the server has ALPN configured, but supports no protocols that the
- client advertises, send a fatal "no_application_protocol" alert.
- This behaviour is SHALL in RFC 7301, though it isn't universally
- implemented by other servers.
- [Emilia Käsper]
-
- *) Add X25519 support.
- Add ASN.1 and EVP_PKEY methods for X25519. This includes support
- for public and private key encoding using the format documented in
- draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
- key generation and key derivation.
-
- TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
- X25519(29).
- [Steve Henson]
-
- *) Deprecate SRP_VBASE_get_by_user.
- SRP_VBASE_get_by_user had inconsistent memory management behaviour.
- In order to fix an unavoidable memory leak (CVE-2016-0798),
- SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
- seed, even if the seed is configured.
-
- Users should use SRP_VBASE_get1_by_user instead. Note that in
- SRP_VBASE_get1_by_user, caller must free the returned value. Note
- also that even though configuring the SRP seed attempts to hide
- invalid usernames by continuing the handshake with fake
- credentials, this behaviour is not constant time and no strong
- guarantees are made that the handshake is indistinguishable from
- that of a valid user.
- [Emilia Käsper]
-
- *) Configuration change; it's now possible to build dynamic engines
- without having to build shared libraries and vice versa. This
- only applies to the engines in engines/, those in crypto/engine/
- will always be built into libcrypto (i.e. "static").
-
- Building dynamic engines is enabled by default; to disable, use
- the configuration option "disable-dynamic-engine".
-
- The only requirements for building dynamic engines are the
- presence of the DSO module and building with position independent
- code, so they will also automatically be disabled if configuring
- with "disable-dso" or "disable-pic".
-
- The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
- are also taken away from openssl/opensslconf.h, as they are
- irrelevant.
- [Richard Levitte]
-
- *) Configuration change; if there is a known flag to compile
- position independent code, it will always be applied on the
- libcrypto and libssl object files, and never on the application
- object files. This means other libraries that use routines from
- libcrypto / libssl can be made into shared libraries regardless
- of how OpenSSL was configured.
-
- If this isn't desirable, the configuration options "disable-pic"
- or "no-pic" can be used to disable the use of PIC. This will
- also disable building shared libraries and dynamic engines.
- [Richard Levitte]
-
- *) Removed JPAKE code. It was experimental and has no wide use.
- [Rich Salz]
-
- *) The INSTALL_PREFIX Makefile variable has been renamed to
- DESTDIR. That makes for less confusion on what this variable
- is for. Also, the configuration option --install_prefix is
- removed.
- [Richard Levitte]
-
- *) Heartbeat for TLS has been removed and is disabled by default
- for DTLS; configure with enable-heartbeats. Code that uses the
- old #define's might need to be updated.
- [Emilia Käsper, Rich Salz]
-
- *) Rename REF_CHECK to REF_DEBUG.
- [Rich Salz]
-
- *) New "unified" build system
-
- The "unified" build system is aimed to be a common system for all
- platforms we support. With it comes new support for VMS.
-
- This system builds supports building in a different directory tree
- than the source tree. It produces one Makefile (for unix family
- or lookalikes), or one descrip.mms (for VMS).
-
- The source of information to make the Makefile / descrip.mms is
- small files called 'build.info', holding the necessary
- information for each directory with source to compile, and a
- template in Configurations, like unix-Makefile.tmpl or
- descrip.mms.tmpl.
-
- With this change, the library names were also renamed on Windows
- and on VMS. They now have names that are closer to the standard
- on Unix, and include the major version number, and in certain
- cases, the architecture they are built for. See "Notes on shared
- libraries" in INSTALL.
-
- We rely heavily on the perl module Text::Template.
- [Richard Levitte]
-
- *) Added support for auto-initialisation and de-initialisation of the library.
- OpenSSL no longer requires explicit init or deinit routines to be called,
- except in certain circumstances. See the OPENSSL_init_crypto() and
- OPENSSL_init_ssl() man pages for further information.
- [Matt Caswell]
-
- *) The arguments to the DTLSv1_listen function have changed. Specifically the
- "peer" argument is now expected to be a BIO_ADDR object.
-
- *) Rewrite of BIO networking library. The BIO library lacked consistent
- support of IPv6, and adding it required some more extensive
- modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
- which hold all types of addresses and chains of address information.
- It also introduces a new API, with functions like BIO_socket,
- BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
- The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
- have been adapted accordingly.
- [Richard Levitte]
-
- *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
- the leading 0-byte.
- [Emilia Käsper]
-
- *) CRIME protection: disable compression by default, even if OpenSSL is
- compiled with zlib enabled. Applications can still enable compression
- by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
- using the SSL_CONF library to configure compression.
- [Emilia Käsper]
-
- *) The signature of the session callback configured with
- SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
- was explicitly marked as 'const unsigned char*' instead of
- 'unsigned char*'.
- [Emilia Käsper]
-
- *) Always DPURIFY. Remove the use of uninitialized memory in the
- RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
- [Emilia Käsper]
-
- *) Removed many obsolete configuration items, including
- DES_PTR, DES_RISC1, DES_RISC2, DES_INT
- MD2_CHAR, MD2_INT, MD2_LONG
- BF_PTR, BF_PTR2
- IDEA_SHORT, IDEA_LONG
- RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
- [Rich Salz, with advice from Andy Polyakov]
-
- *) Many BN internals have been moved to an internal header file.
- [Rich Salz with help from Andy Polyakov]
-
- *) Configuration and writing out the results from it has changed.
- Files such as Makefile include/openssl/opensslconf.h and are now
- produced through general templates, such as Makefile.in and
- crypto/opensslconf.h.in and some help from the perl module
- Text::Template.
-
- Also, the center of configuration information is no longer
- Makefile. Instead, Configure produces a perl module in
- configdata.pm which holds most of the config data (in the hash
- table %config), the target data that comes from the target
- configuration in one of the Configurations/*.conf files (in
- %target).
- [Richard Levitte]
-
- *) To clarify their intended purposes, the Configure options
- --prefix and --openssldir change their semantics, and become more
- straightforward and less interdependent.
-
- --prefix shall be used exclusively to give the location INSTALLTOP
- where programs, scripts, libraries, include files and manuals are
- going to be installed. The default is now /usr/local.
-
- --openssldir shall be used exclusively to give the default
- location OPENSSLDIR where certificates, private keys, CRLs are
- managed. This is also where the default openssl.cnf gets
- installed.
- If the directory given with this option is a relative path, the
- values of both the --prefix value and the --openssldir value will
- be combined to become OPENSSLDIR.
- The default for --openssldir is INSTALLTOP/ssl.
-
- Anyone who uses --openssldir to specify where OpenSSL is to be
- installed MUST change to use --prefix instead.
- [Richard Levitte]
-
- *) The GOST engine was out of date and therefore it has been removed. An up
- to date GOST engine is now being maintained in an external repository.
- See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
- support for GOST ciphersuites (these are only activated if a GOST engine
- is present).
- [Matt Caswell]
-
- *) EGD is no longer supported by default; use enable-egd when
- configuring.
- [Ben Kaduk and Rich Salz]
-
- *) The distribution now has Makefile.in files, which are used to
- create Makefile's when Configure is run. *Configure must be run
- before trying to build now.*
- [Rich Salz]
-
- *) The return value for SSL_CIPHER_description() for error conditions
- has changed.
- [Rich Salz]
-
- *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
-
- Obtaining and performing DNSSEC validation of TLSA records is
- the application's responsibility. The application provides
- the TLSA records of its choice to OpenSSL, and these are then
- used to authenticate the peer.
-
- The TLSA records need not even come from DNS. They can, for
- example, be used to implement local end-entity certificate or
- trust-anchor "pinning", where the "pin" data takes the form
- of TLSA records, which can augment or replace verification
- based on the usual WebPKI public certification authorities.
- [Viktor Dukhovni]
-
- *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
- continues to support deprecated interfaces in default builds.
- However, applications are strongly advised to compile their
- source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
- the declarations of all interfaces deprecated in 0.9.8, 1.0.0
- or the 1.1.0 releases.
-
- In environments in which all applications have been ported to
- not use any deprecated interfaces OpenSSL's Configure script
- should be used with the --api=1.1.0 option to entirely remove
- support for the deprecated features from the library and
- unconditionally disable them in the installed headers.
- Essentially the same effect can be achieved with the "no-deprecated"
- argument to Configure, except that this will always restrict
- the build to just the latest API, rather than a fixed API
- version.
-
- As applications are ported to future revisions of the API,
- they should update their compile-time OPENSSL_API_COMPAT define
- accordingly, but in most cases should be able to continue to
- compile with later releases.
-
- The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
- 0x10000000L and 0x00908000L, respectively. However those
- versions did not support the OPENSSL_API_COMPAT feature, and
- so applications are not typically tested for explicit support
- of just the undeprecated features of either release.
- [Viktor Dukhovni]
-
- *) Add support for setting the minimum and maximum supported protocol.
- It can bet set via the SSL_set_min_proto_version() and
- SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
- MaxProtocol. It's recommended to use the new APIs to disable
- protocols instead of disabling individual protocols using
- SSL_set_options() or SSL_CONF's Protocol. This change also
- removes support for disabling TLS 1.2 in the OpenSSL TLS
- client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
- [Kurt Roeckx]
-
- *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
- [Andy Polyakov]
-
- *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
- and integrates ECDSA and ECDH functionality into EC. Implementations can
- now redirect key generation and no longer need to convert to or from
- ECDSA_SIG format.
-
- Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
- include the ec.h header file instead.
- [Steve Henson]
-
- *) Remove support for all 40 and 56 bit ciphers. This includes all the export
- ciphers who are no longer supported and drops support the ephemeral RSA key
- exchange. The LOW ciphers currently doesn't have any ciphers in it.
- [Kurt Roeckx]
-
- *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
- opaque. For HMAC_CTX, the following constructors and destructors
- were added:
-
- HMAC_CTX *HMAC_CTX_new(void);
- void HMAC_CTX_free(HMAC_CTX *ctx);
-
- For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
- destroy such methods has been added. See EVP_MD_meth_new(3) and
- EVP_CIPHER_meth_new(3) for documentation.
-
- Additional changes:
- 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
- HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
- EVP_MD_CTX_reset() should be called instead to reinitialise
- an already created structure.
- 2) For consistency with the majority of our object creators and
- destructors, EVP_MD_CTX_(create|destroy) were renamed to
- EVP_MD_CTX_(new|free). The old names are retained as macros
- for deprecated builds.
- [Richard Levitte]
-
- *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
- cryptographic operations to be performed asynchronously as long as an
- asynchronous capable engine is used. See the ASYNC_start_job() man page for
- further details. Libssl has also had this capability integrated with the
- introduction of the new mode SSL_MODE_ASYNC and associated error
- SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
- pages. This work was developed in partnership with Intel Corp.
- [Matt Caswell]
-
- *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
- always enabled now. If you want to disable the support you should
- exclude it using the list of supported ciphers. This also means that the
- "-no_ecdhe" option has been removed from s_server.
- [Kurt Roeckx]
-
- *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
- SSL_{CTX_}set1_curves() which can set a list.
- [Kurt Roeckx]
-
- *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
- curve you want to support using SSL_{CTX_}set1_curves().
- [Kurt Roeckx]
-
- *) State machine rewrite. The state machine code has been significantly
- refactored in order to remove much duplication of code and solve issues
- with the old code (see ssl/statem/README for further details). This change
- does have some associated API changes. Notably the SSL_state() function
- has been removed and replaced by SSL_get_state which now returns an
- "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
- altogether. The previous handshake states defined in ssl.h and ssl3.h have
- also been removed.
- [Matt Caswell]
-
- *) All instances of the string "ssleay" in the public API were replaced
- with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
- Some error codes related to internal RSA_eay API's were renamed.
- [Rich Salz]
-
- *) The demo files in crypto/threads were moved to demo/threads.
- [Rich Salz]
-
- *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
- sureware and ubsec.
- [Matt Caswell, Rich Salz]
-
- *) New ASN.1 embed macro.
-
- New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
- structure is not allocated: it is part of the parent. That is instead of
-
- FOO *x;
-
- it must be:
-
- FOO x;
-
- This reduces memory fragmentation and make it impossible to accidentally
- set a mandatory field to NULL.
-
- This currently only works for some fields specifically a SEQUENCE, CHOICE,
- or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
- equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
- SEQUENCE OF.
- [Steve Henson]
-
- *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
- [Emilia Käsper]
-
- *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
- in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
- an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
- DES and RC4 ciphersuites.
- [Matt Caswell]
-
- *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
- This changes the decoding behaviour for some invalid messages,
- though the change is mostly in the more lenient direction, and
- legacy behaviour is preserved as much as possible.
- [Emilia Käsper]
-
- *) Fix no-stdio build.
- [ David Woodhouse <David.Woodhouse@intel.com> and also
- Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
-
- *) New testing framework
- The testing framework has been largely rewritten and is now using
- perl and the perl modules Test::Harness and an extended variant of
- Test::More called OpenSSL::Test to do its work. All test scripts in
- test/ have been rewritten into test recipes, and all direct calls to
- executables in test/Makefile have become individual recipes using the
- simplified testing OpenSSL::Test::Simple.
-
- For documentation on our testing modules, do:
-
- perldoc test/testlib/OpenSSL/Test/Simple.pm
- perldoc test/testlib/OpenSSL/Test.pm
-
- [Richard Levitte]
-
- *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
- are used; the latter aborts on memory leaks (usually checked on exit).
- Some undocumented "set malloc, etc., hooks" functions were removed
- and others were changed. All are now documented.
- [Rich Salz]
-
- *) In DSA_generate_parameters_ex, if the provided seed is too short,
- return an error
- [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
-
- *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
- from RFC4279, RFC4785, RFC5487, RFC5489.
-
- Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
- original RSA_PSK patch.
- [Steve Henson]
-
- *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
- era flag was never set throughout the codebase (only read). Also removed
- SSL3_FLAGS_POP_BUFFER which was only used if
- SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
- [Matt Caswell]
-
- *) Changed the default name options in the "ca", "crl", "req" and "x509"
- to be "oneline" instead of "compat".
- [Richard Levitte]
-
- *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
- not aware of clients that still exhibit this bug, and the workaround
- hasn't been working properly for a while.
- [Emilia Käsper]
-
- *) The return type of BIO_number_read() and BIO_number_written() as well as
- the corresponding num_read and num_write members in the BIO structure has
- changed from unsigned long to uint64_t. On platforms where an unsigned
- long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
- transferred.
- [Matt Caswell]
-
- *) Given the pervasive nature of TLS extensions it is inadvisable to run
- OpenSSL without support for them. It also means that maintaining
- the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
- not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
- [Matt Caswell]
-
- *) Removed support for the two export grade static DH ciphersuites
- EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
- were newly added (along with a number of other static DH ciphersuites) to
- 1.0.2. However the two export ones have *never* worked since they were
- introduced. It seems strange in any case to be adding new export
- ciphersuites, and given "logjam" it also does not seem correct to fix them.
- [Matt Caswell]
-
- *) Version negotiation has been rewritten. In particular SSLv23_method(),
- SSLv23_client_method() and SSLv23_server_method() have been deprecated,
- and turned into macros which simply call the new preferred function names
- TLS_method(), TLS_client_method() and TLS_server_method(). All new code
- should use the new names instead. Also as part of this change the ssl23.h
- header file has been removed.
- [Matt Caswell]
-
- *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
- code and the associated standard is no longer considered fit-for-purpose.
- [Matt Caswell]
-
- *) RT2547 was closed. When generating a private key, try to make the
- output file readable only by the owner. This behavior change might
- be noticeable when interacting with other software.
-
- *) Documented all exdata functions. Added CRYPTO_free_ex_index.
- Added a test.
- [Rich Salz]
-
- *) Added HTTP GET support to the ocsp command.
- [Rich Salz]
-
- *) Changed default digest for the dgst and enc commands from MD5 to
- sha256
- [Rich Salz]
-
- *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
- [Matt Caswell]
-
- *) Added support for TLS extended master secret from
- draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
- initial patch which was a great help during development.
- [Steve Henson]
-
- *) All libssl internal structures have been removed from the public header
- files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
- now redundant). Users should not attempt to access internal structures
- directly. Instead they should use the provided API functions.
- [Matt Caswell]
-
- *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
- Access to deprecated functions can be re-enabled by running config with
- "enable-deprecated". In addition applications wishing to use deprecated
- functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
- will, by default, disable some transitive includes that previously existed
- in the header files (e.g. ec.h will no longer, by default, include bn.h)
- [Matt Caswell]
-
- *) Added support for OCB mode. OpenSSL has been granted a patent license
- compatible with the OpenSSL license for use of OCB. Details are available
- at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
- for OCB can be removed by calling config with no-ocb.
- [Matt Caswell]
-
- *) SSLv2 support has been removed. It still supports receiving a SSLv2
- compatible client hello.
- [Kurt Roeckx]
-
- *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
- done while fixing the error code for the key-too-small case.
- [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
-
- *) CA.sh has been removed; use CA.pl instead.
- [Rich Salz]
-
- *) Removed old DES API.
- [Rich Salz]
-
- *) Remove various unsupported platforms:
- Sony NEWS4
- BEOS and BEOS_R5
- NeXT
- SUNOS
- MPE/iX
- Sinix/ReliantUNIX RM400
- DGUX
- NCR
- Tandem
- Cray
- 16-bit platforms such as WIN16
- [Rich Salz]
-
- *) Clean up OPENSSL_NO_xxx #define's
- Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
- Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
- OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
- OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
- OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
- Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
- OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
- OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
- OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
- Remove MS_STATIC; it's a relic from platforms <32 bits.
- [Rich Salz]
-
- *) Cleaned up dead code
- Remove all but one '#ifdef undef' which is to be looked at.
- [Rich Salz]
-
- *) Clean up calling of xxx_free routines.
- Just like free(), fix most of the xxx_free routines to accept
- NULL. Remove the non-null checks from callers. Save much code.
- [Rich Salz]
-
- *) Add secure heap for storage of private keys (when possible).
- Add BIO_s_secmem(), CBIGNUM, etc.
- Contributed by Akamai Technologies under our Corporate CLA.
- [Rich Salz]
-
- *) Experimental support for a new, fast, unbiased prime candidate generator,
- bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
- [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
-
- *) New output format NSS in the sess_id command line tool. This allows
- exporting the session id and the master key in NSS keylog format.
- [Martin Kaiser <martin@kaiser.cx>]
-
- *) Harmonize version and its documentation. -f flag is used to display
- compilation flags.
- [mancha <mancha1@zoho.com>]
-
- *) Fix eckey_priv_encode so it immediately returns an error upon a failure
- in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
- [mancha <mancha1@zoho.com>]
-
- *) Fix some double frees. These are not thought to be exploitable.
- [mancha <mancha1@zoho.com>]
-
- *) A missing bounds check in the handling of the TLS heartbeat extension
- can be used to reveal up to 64k of memory to a connected client or
- server.
-
- Thanks for Neel Mehta of Google Security for discovering this bug and to
- Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
- preparing the fix (CVE-2014-0160)
- [Adam Langley, Bodo Moeller]
-
- *) Fix for the attack described in the paper "Recovering OpenSSL
- ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
- by Yuval Yarom and Naomi Benger. Details can be obtained from:
- http://eprint.iacr.org/2014/140
-
- Thanks to Yuval Yarom and Naomi Benger for discovering this
- flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
- [Yuval Yarom and Naomi Benger]
-
- *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
- this fixes a limitation in previous versions of OpenSSL.
- [Steve Henson]
-
- *) Experimental encrypt-then-mac support.
-
- Experimental support for encrypt then mac from
- draft-gutmann-tls-encrypt-then-mac-02.txt
-
- To enable it set the appropriate extension number (0x42 for the test
- server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
-
- For non-compliant peers (i.e. just about everything) this should have no
- effect.
-
- WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
-
- [Steve Henson]
-
- *) Add EVP support for key wrapping algorithms, to avoid problems with
- existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
- the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
- algorithms and include tests cases.
- [Steve Henson]
-
- *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
- enveloped data.
- [Steve Henson]
-
- *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
- MGF1 digest and OAEP label.
- [Steve Henson]
-
- *) Make openssl verify return errors.
- [Chris Palmer <palmer@google.com> and Ben Laurie]
-
- *) New function ASN1_TIME_diff to calculate the difference between two
- ASN1_TIME structures or one structure and the current time.
- [Steve Henson]
-
- *) Update fips_test_suite to support multiple command line options. New
- test to induce all self test errors in sequence and check expected
- failures.
- [Steve Henson]
-
- *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
- sign or verify all in one operation.
- [Steve Henson]
-
- *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
- test programs and fips_test_suite. Includes functionality to parse
- the minimal script output of fipsalgest.pl directly.
- [Steve Henson]
-
- *) Add authorisation parameter to FIPS_module_mode_set().
- [Steve Henson]
-
- *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
- [Steve Henson]
-
- *) Use separate DRBG fields for internal and external flags. New function
- FIPS_drbg_health_check() to perform on demand health checking. Add
- generation tests to fips_test_suite with reduced health check interval to
- demonstrate periodic health checking. Add "nodh" option to
- fips_test_suite to skip very slow DH test.
- [Steve Henson]
-
- *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
- based on NID.
- [Steve Henson]
-
- *) More extensive health check for DRBG checking many more failure modes.
- New function FIPS_selftest_drbg_all() to handle every possible DRBG
- combination: call this in fips_test_suite.
- [Steve Henson]
-
- *) Add support for canonical generation of DSA parameter 'g'. See
- FIPS 186-3 A.2.3.
-
- *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
- POST to handle HMAC cases.
- [Steve Henson]
-
- *) Add functions FIPS_module_version() and FIPS_module_version_text()
- to return numerical and string versions of the FIPS module number.
- [Steve Henson]
-
- *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
- FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
- outside the validated module in the FIPS capable OpenSSL.
- [Steve Henson]
-
- *) Minor change to DRBG entropy callback semantics. In some cases
- there is no multiple of the block length between min_len and
- max_len. Allow the callback to return more than max_len bytes
- of entropy but discard any extra: it is the callback's responsibility
- to ensure that the extra data discarded does not impact the
- requested amount of entropy.
- [Steve Henson]
-
- *) Add PRNG security strength checks to RSA, DSA and ECDSA using
- information in FIPS186-3, SP800-57 and SP800-131A.
- [Steve Henson]
-
- *) CCM support via EVP. Interface is very similar to GCM case except we
- must supply all data in one chunk (i.e. no update, final) and the
- message length must be supplied if AAD is used. Add algorithm test
- support.
- [Steve Henson]
-
- *) Initial version of POST overhaul. Add POST callback to allow the status
- of POST to be monitored and/or failures induced. Modify fips_test_suite
- to use callback. Always run all selftests even if one fails.
- [Steve Henson]
-
- *) XTS support including algorithm test driver in the fips_gcmtest program.
- Note: this does increase the maximum key length from 32 to 64 bytes but
- there should be no binary compatibility issues as existing applications
- will never use XTS mode.
- [Steve Henson]
-
- *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
- to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
- performs algorithm blocking for unapproved PRNG types. Also do not
- set PRNG type in FIPS_mode_set(): leave this to the application.
- Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
- the standard OpenSSL PRNG: set additional data to a date time vector.
- [Steve Henson]
-
- *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
- This shouldn't present any incompatibility problems because applications
- shouldn't be using these directly and any that are will need to rethink
- anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
- [Steve Henson]
-
- *) Extensive self tests and health checking required by SP800-90 DRBG.
- Remove strength parameter from FIPS_drbg_instantiate and always
- instantiate at maximum supported strength.
- [Steve Henson]
-
- *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
- [Steve Henson]
-
- *) New algorithm test program fips_dhvs to handle DH primitives only testing.
- [Steve Henson]
-
- *) New function DH_compute_key_padded() to compute a DH key and pad with
- leading zeroes if needed: this complies with SP800-56A et al.
- [Steve Henson]
-
- *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
- anything, incomplete, subject to change and largely untested at present.
- [Steve Henson]
-
- *) Modify fipscanisteronly build option to only build the necessary object
- files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
- [Steve Henson]
-
- *) Add experimental option FIPSSYMS to give all symbols in
- fipscanister.o and FIPS or fips prefix. This will avoid
- conflicts with future versions of OpenSSL. Add perl script
- util/fipsas.pl to preprocess assembly language source files
- and rename any affected symbols.
- [Steve Henson]
-
- *) Add selftest checks and algorithm block of non-fips algorithms in
- FIPS mode. Remove DES2 from selftests.
- [Steve Henson]
-
- *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
- return internal method without any ENGINE dependencies. Add new
- tiny fips sign and verify functions.
- [Steve Henson]
-
- *) New build option no-ec2m to disable characteristic 2 code.
- [Steve Henson]
-
- *) New build option "fipscanisteronly". This only builds fipscanister.o
- and (currently) associated fips utilities. Uses the file Makefile.fips
- instead of Makefile.org as the prototype.
- [Steve Henson]
-
- *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
- Update fips_gcmtest to use IV generator.
- [Steve Henson]
-
- *) Initial, experimental EVP support for AES-GCM. AAD can be input by
- setting output buffer to NULL. The *Final function must be
- called although it will not retrieve any additional data. The tag
- can be set or retrieved with a ctrl. The IV length is by default 12
- bytes (96 bits) but can be set to an alternative value. If the IV
- length exceeds the maximum IV length (currently 16 bytes) it cannot be
- set before the key.
- [Steve Henson]
-
- *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
- underlying do_cipher function handles all cipher semantics itself
- including padding and finalisation. This is useful if (for example)
- an ENGINE cipher handles block padding itself. The behaviour of
- do_cipher is subtly changed if this flag is set: the return value
- is the number of characters written to the output buffer (zero is
- no longer an error code) or a negative error code. Also if the
- input buffer is NULL and length 0 finalisation should be performed.
- [Steve Henson]
-
- *) If a candidate issuer certificate is already part of the constructed
- path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
- [Steve Henson]
-
- *) Improve forward-security support: add functions
-
- void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
- void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
-
- for use by SSL/TLS servers; the callback function will be called whenever a
- new session is created, and gets to decide whether the session may be
- cached to make it resumable (return 0) or not (return 1). (As by the
- SSL/TLS protocol specifications, the session_id sent by the server will be
- empty to indicate that the session is not resumable; also, the server will
- not generate RFC 4507 (RFC 5077) session tickets.)
-
- A simple reasonable callback implementation is to return is_forward_secure.
- This parameter will be set to 1 or 0 depending on the ciphersuite selected
- by the SSL/TLS server library, indicating whether it can provide forward
- security.
- [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
-
- *) New -verify_name option in command line utilities to set verification
- parameters by name.
- [Steve Henson]
-
- *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
- Add CMAC pkey methods.
- [Steve Henson]
-
- *) Experimental renegotiation in s_server -www mode. If the client
- browses /reneg connection is renegotiated. If /renegcert it is
- renegotiated requesting a certificate.
- [Steve Henson]
-
- *) Add an "external" session cache for debugging purposes to s_server. This
- should help trace issues which normally are only apparent in deployed
- multi-process servers.
- [Steve Henson]
-
- *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
- return value is ignored. NB. The functions RAND_add(), RAND_seed(),
- BIO_set_cipher() and some obscure PEM functions were changed so they
- can now return an error. The RAND changes required a change to the
- RAND_METHOD structure.
- [Steve Henson]
-
- *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
- a gcc attribute to warn if the result of a function is ignored. This
- is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
- whose return value is often ignored.
- [Steve Henson]
-
- *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
- These allow SCTs (signed certificate timestamps) to be requested and
- validated when establishing a connection.
- [Rob Percival <robpercival@google.com>]
-
- Changes between 1.0.2g and 1.0.2h [3 May 2016]
-
- *) Prevent padding oracle in AES-NI CBC MAC check
-
- A MITM attacker can use a padding oracle attack to decrypt traffic
- when the connection uses an AES CBC cipher and the server support
- AES-NI.
-
- This issue was introduced as part of the fix for Lucky 13 padding
- attack (CVE-2013-0169). The padding check was rewritten to be in
- constant time by making sure that always the same bytes are read and
- compared against either the MAC or padding bytes. But it no longer
- checked that there was enough data to have both the MAC and padding
- bytes.
-
- This issue was reported by Juraj Somorovsky using TLS-Attacker.
- (CVE-2016-2107)
- [Kurt Roeckx]
-
- *) Fix EVP_EncodeUpdate overflow
-
- An overflow can occur in the EVP_EncodeUpdate() function which is used for
- Base64 encoding of binary data. If an attacker is able to supply very large
- amounts of input data then a length check can overflow resulting in a heap
- corruption.
-
- Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
- the PEM_write_bio* family of functions. These are mainly used within the
- OpenSSL command line applications, so any application which processes data
- from an untrusted source and outputs it as a PEM file should be considered
- vulnerable to this issue. User applications that call these APIs directly
- with large amounts of untrusted data may also be vulnerable.
-
- This issue was reported by Guido Vranken.
- (CVE-2016-2105)
- [Matt Caswell]
-
- *) Fix EVP_EncryptUpdate overflow
-
- An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
- is able to supply very large amounts of input data after a previous call to
- EVP_EncryptUpdate() with a partial block then a length check can overflow
- resulting in a heap corruption. Following an analysis of all OpenSSL
- internal usage of the EVP_EncryptUpdate() function all usage is one of two
- forms. The first form is where the EVP_EncryptUpdate() call is known to be
- the first called function after an EVP_EncryptInit(), and therefore that
- specific call must be safe. The second form is where the length passed to
- EVP_EncryptUpdate() can be seen from the code to be some small value and
- therefore there is no possibility of an overflow. Since all instances are
- one of these two forms, it is believed that there can be no overflows in
- internal code due to this problem. It should be noted that
- EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
- Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
- of these calls have also been analysed too and it is believed there are no
- instances in internal usage where an overflow could occur.
-
- This issue was reported by Guido Vranken.
- (CVE-2016-2106)
- [Matt Caswell]
-
- *) Prevent ASN.1 BIO excessive memory allocation
-
- When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
- a short invalid encoding can cause allocation of large amounts of memory
- potentially consuming excessive resources or exhausting memory.
-
- Any application parsing untrusted data through d2i BIO functions is
- affected. The memory based functions such as d2i_X509() are *not* affected.
- Since the memory based functions are used by the TLS library, TLS
- applications are not affected.
-
- This issue was reported by Brian Carpenter.
- (CVE-2016-2109)
- [Stephen Henson]
-
- *) EBCDIC overread
-
- ASN1 Strings that are over 1024 bytes can cause an overread in applications
- using the X509_NAME_oneline() function on EBCDIC systems. This could result
- in arbitrary stack data being returned in the buffer.
-
- This issue was reported by Guido Vranken.
- (CVE-2016-2176)
- [Matt Caswell]
-
- *) Modify behavior of ALPN to invoke callback after SNI/servername
- callback, such that updates to the SSL_CTX affect ALPN.
- [Todd Short]
-
- *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
- default.
- [Kurt Roeckx]
-
- *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
- methods are enabled and ssl2 is disabled the methods return NULL.
- [Kurt Roeckx]
-
- Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
-
- * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
- Builds that are not configured with "enable-weak-ssl-ciphers" will not
- provide any "EXPORT" or "LOW" strength ciphers.
- [Viktor Dukhovni]
-
- * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
- is by default disabled at build-time. Builds that are not configured with
- "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
- users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
- will need to explicitly call either of:
-
- SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
- or
- SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
-
- as appropriate. Even if either of those is used, or the application
- explicitly uses the version-specific SSLv2_method() or its client and
- server variants, SSLv2 ciphers vulnerable to exhaustive search key
- recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
- ciphers, and SSLv2 56-bit DES are no longer available.
- (CVE-2016-0800)
- [Viktor Dukhovni]
-
- *) Fix a double-free in DSA code
-
- A double free bug was discovered when OpenSSL parses malformed DSA private
- keys and could lead to a DoS attack or memory corruption for applications
- that receive DSA private keys from untrusted sources. This scenario is
- considered rare.
-
- This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
- libFuzzer.
- (CVE-2016-0705)
- [Stephen Henson]
-
- *) Disable SRP fake user seed to address a server memory leak.
-
- Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
-
- SRP_VBASE_get_by_user had inconsistent memory management behaviour.
- In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
- was changed to ignore the "fake user" SRP seed, even if the seed
- is configured.
-
- Users should use SRP_VBASE_get1_by_user instead. Note that in
- SRP_VBASE_get1_by_user, caller must free the returned value. Note
- also that even though configuring the SRP seed attempts to hide
- invalid usernames by continuing the handshake with fake
- credentials, this behaviour is not constant time and no strong
- guarantees are made that the handshake is indistinguishable from
- that of a valid user.
- (CVE-2016-0798)
- [Emilia Käsper]
-
- *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
-
- In the BN_hex2bn function the number of hex digits is calculated using an
- int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
- large values of |i| this can result in |bn_expand| not allocating any
- memory because |i * 4| is negative. This can leave the internal BIGNUM data
- field as NULL leading to a subsequent NULL ptr deref. For very large values
- of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
- In this case memory is allocated to the internal BIGNUM data field, but it
- is insufficiently sized leading to heap corruption. A similar issue exists
- in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
- is ever called by user applications with very large untrusted hex/dec data.
- This is anticipated to be a rare occurrence.
-
- All OpenSSL internal usage of these functions use data that is not expected
- to be untrusted, e.g. config file data or application command line
- arguments. If user developed applications generate config file data based
- on untrusted data then it is possible that this could also lead to security
- consequences. This is also anticipated to be rare.
-
- This issue was reported to OpenSSL by Guido Vranken.
- (CVE-2016-0797)
- [Matt Caswell]
-
- *) Fix memory issues in BIO_*printf functions
-
- The internal |fmtstr| function used in processing a "%s" format string in
- the BIO_*printf functions could overflow while calculating the length of a
- string and cause an OOB read when printing very long strings.
-
- Additionally the internal |doapr_outch| function can attempt to write to an
- OOB memory location (at an offset from the NULL pointer) in the event of a
- memory allocation failure. In 1.0.2 and below this could be caused where
- the size of a buffer to be allocated is greater than INT_MAX. E.g. this
- could be in processing a very long "%s" format string. Memory leaks can
- also occur.
-
- The first issue may mask the second issue dependent on compiler behaviour.
- These problems could enable attacks where large amounts of untrusted data
- is passed to the BIO_*printf functions. If applications use these functions
- in this way then they could be vulnerable. OpenSSL itself uses these
- functions when printing out human-readable dumps of ASN.1 data. Therefore
- applications that print this data could be vulnerable if the data is from
- untrusted sources. OpenSSL command line applications could also be
- vulnerable where they print out ASN.1 data, or if untrusted data is passed
- as command line arguments.
-
- Libssl is not considered directly vulnerable. Additionally certificates etc
- received via remote connections via libssl are also unlikely to be able to
- trigger these issues because of message size limits enforced within libssl.
-
- This issue was reported to OpenSSL Guido Vranken.
- (CVE-2016-0799)
- [Matt Caswell]
-
- *) Side channel attack on modular exponentiation
-
- A side-channel attack was found which makes use of cache-bank conflicts on
- the Intel Sandy-Bridge microarchitecture which could lead to the recovery
- of RSA keys. The ability to exploit this issue is limited as it relies on
- an attacker who has control of code in a thread running on the same
- hyper-threaded core as the victim thread which is performing decryptions.
-
- This issue was reported to OpenSSL by Yuval Yarom, The University of
- Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
- Nadia Heninger, University of Pennsylvania with more information at
- http://cachebleed.info.
- (CVE-2016-0702)
- [Andy Polyakov]
-
- *) Change the req app to generate a 2048-bit RSA/DSA key by default,
- if no keysize is specified with default_bits. This fixes an
- omission in an earlier change that changed all RSA/DSA key generation
- apps to use 2048 bits by default.
- [Emilia Käsper]
-
- Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
- *) DH small subgroups
-
- Historically OpenSSL only ever generated DH parameters based on "safe"
- primes. More recently (in version 1.0.2) support was provided for
- generating X9.42 style parameter files such as those required for RFC 5114
- support. The primes used in such files may not be "safe". Where an
- application is using DH configured with parameters based on primes that are
- not "safe" then an attacker could use this fact to find a peer's private
- DH exponent. This attack requires that the attacker complete multiple
- handshakes in which the peer uses the same private DH exponent. For example
- this could be used to discover a TLS server's private DH exponent if it's
- reusing the private DH exponent or it's using a static DH ciphersuite.
-
- OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
- TLS. It is not on by default. If the option is not set then the server
- reuses the same private DH exponent for the life of the server process and
- would be vulnerable to this attack. It is believed that many popular
- applications do set this option and would therefore not be at risk.
-
- The fix for this issue adds an additional check where a "q" parameter is
- available (as is the case in X9.42 based parameters). This detects the
- only known attack, and is the only possible defense for static DH
- ciphersuites. This could have some performance impact.
-
- Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
- default and cannot be disabled. This could have some performance impact.
-
- This issue was reported to OpenSSL by Antonio Sanso (Adobe).
- (CVE-2016-0701)
- [Matt Caswell]
-
- *) SSLv2 doesn't block disabled ciphers
-
- A malicious client can negotiate SSLv2 ciphers that have been disabled on
- the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
- been disabled, provided that the SSLv2 protocol was not also disabled via
- SSL_OP_NO_SSLv2.
-
- This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
- and Sebastian Schinzel.
- (CVE-2015-3197)
- [Viktor Dukhovni]
-
- Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
-
- *) BN_mod_exp may produce incorrect results on x86_64
-
- There is a carry propagating bug in the x86_64 Montgomery squaring
- procedure. No EC algorithms are affected. Analysis suggests that attacks
- against RSA and DSA as a result of this defect would be very difficult to
- perform and are not believed likely. Attacks against DH are considered just
- feasible (although very difficult) because most of the work necessary to
- deduce information about a private key may be performed offline. The amount
- of resources required for such an attack would be very significant and
- likely only accessible to a limited number of attackers. An attacker would
- additionally need online access to an unpatched system using the target
- private key in a scenario with persistent DH parameters and a private
- key that is shared between multiple clients. For example this can occur by
- default in OpenSSL DHE based SSL/TLS ciphersuites.
-
- This issue was reported to OpenSSL by Hanno Böck.
- (CVE-2015-3193)
- [Andy Polyakov]
-
- *) Certificate verify crash with missing PSS parameter
-
- The signature verification routines will crash with a NULL pointer
- dereference if presented with an ASN.1 signature using the RSA PSS
- algorithm and absent mask generation function parameter. Since these
- routines are used to verify certificate signature algorithms this can be
- used to crash any certificate verification operation and exploited in a
- DoS attack. Any application which performs certificate verification is
- vulnerable including OpenSSL clients and servers which enable client
- authentication.
-
- This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
- (CVE-2015-3194)
- [Stephen Henson]
-
- *) X509_ATTRIBUTE memory leak
-
- When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
- memory. This structure is used by the PKCS#7 and CMS routines so any
- application which reads PKCS#7 or CMS data from untrusted sources is
- affected. SSL/TLS is not affected.
-
- This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
- libFuzzer.
- (CVE-2015-3195)
- [Stephen Henson]
-
- *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
- This changes the decoding behaviour for some invalid messages,
- though the change is mostly in the more lenient direction, and
- legacy behaviour is preserved as much as possible.
- [Emilia Käsper]
-
- *) In DSA_generate_parameters_ex, if the provided seed is too short,
- return an error
- [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
-
- Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
-
- *) Alternate chains certificate forgery
-
- During certificate verification, OpenSSL will attempt to find an
- alternative certificate chain if the first attempt to build such a chain
- fails. An error in the implementation of this logic can mean that an
- attacker could cause certain checks on untrusted certificates to be
- bypassed, such as the CA flag, enabling them to use a valid leaf
- certificate to act as a CA and "issue" an invalid certificate.
-
- This issue was reported to OpenSSL by Adam Langley/David Benjamin
- (Google/BoringSSL).
- [Matt Caswell]
-
- Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
-
- *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
- incompatibility in the handling of HMAC. The previous ABI has now been
- restored.
- [Matt Caswell]
-
- Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
-
- *) Malformed ECParameters causes infinite loop
-
- When processing an ECParameters structure OpenSSL enters an infinite loop
- if the curve specified is over a specially malformed binary polynomial
- field.
-
- This can be used to perform denial of service against any
- system which processes public keys, certificate requests or
- certificates. This includes TLS clients and TLS servers with
- client authentication enabled.
-
- This issue was reported to OpenSSL by Joseph Barr-Pixton.
- (CVE-2015-1788)
- [Andy Polyakov]
-
- *) Exploitable out-of-bounds read in X509_cmp_time
-
- X509_cmp_time does not properly check the length of the ASN1_TIME
- string and can read a few bytes out of bounds. In addition,
- X509_cmp_time accepts an arbitrary number of fractional seconds in the
- time string.
-
- An attacker can use this to craft malformed certificates and CRLs of
- various sizes and potentially cause a segmentation fault, resulting in
- a DoS on applications that verify certificates or CRLs. TLS clients
- that verify CRLs are affected. TLS clients and servers with client
- authentication enabled may be affected if they use custom verification
- callbacks.
-
- This issue was reported to OpenSSL by Robert Swiecki (Google), and
- independently by Hanno Böck.
- (CVE-2015-1789)
- [Emilia Käsper]
-
- *) PKCS7 crash with missing EnvelopedContent
-
- The PKCS#7 parsing code does not handle missing inner EncryptedContent
- correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
- with missing content and trigger a NULL pointer dereference on parsing.
-
- Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
- structures from untrusted sources are affected. OpenSSL clients and
- servers are not affected.
-
- This issue was reported to OpenSSL by Michal Zalewski (Google).
- (CVE-2015-1790)
- [Emilia Käsper]
-
- *) CMS verify infinite loop with unknown hash function
-
- When verifying a signedData message the CMS code can enter an infinite loop
- if presented with an unknown hash function OID. This can be used to perform
- denial of service against any system which verifies signedData messages using
- the CMS code.
- This issue was reported to OpenSSL by Johannes Bauer.
- (CVE-2015-1792)
- [Stephen Henson]
-
- *) Race condition handling NewSessionTicket
-
- If a NewSessionTicket is received by a multi-threaded client when attempting to
- reuse a previous ticket then a race condition can occur potentially leading to
- a double free of the ticket data.
- (CVE-2015-1791)
- [Matt Caswell]
-
- *) Only support 256-bit or stronger elliptic curves with the
- 'ecdh_auto' setting (server) or by default (client). Of supported
- curves, prefer P-256 (both).
- [Emilia Kasper]
-
- Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
-
- *) ClientHello sigalgs DoS fix
-
- If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
- invalid signature algorithms extension a NULL pointer dereference will
- occur. This can be exploited in a DoS attack against the server.
-
- This issue was was reported to OpenSSL by David Ramos of Stanford
- University.
- (CVE-2015-0291)
- [Stephen Henson and Matt Caswell]
-
- *) Multiblock corrupted pointer fix
-
- OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
- feature only applies on 64 bit x86 architecture platforms that support AES
- NI instructions. A defect in the implementation of "multiblock" can cause
- OpenSSL's internal write buffer to become incorrectly set to NULL when
- using non-blocking IO. Typically, when the user application is using a
- socket BIO for writing, this will only result in a failed connection.
- However if some other BIO is used then it is likely that a segmentation
- fault will be triggered, thus enabling a potential DoS attack.
-
- This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
- (CVE-2015-0290)
- [Matt Caswell]
-
- *) Segmentation fault in DTLSv1_listen fix
-
- The DTLSv1_listen function is intended to be stateless and processes the
- initial ClientHello from many peers. It is common for user code to loop
- over the call to DTLSv1_listen until a valid ClientHello is received with
- an associated cookie. A defect in the implementation of DTLSv1_listen means
- that state is preserved in the SSL object from one invocation to the next
- that can lead to a segmentation fault. Errors processing the initial
- ClientHello can trigger this scenario. An example of such an error could be
- that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
- server.
-
- This issue was reported to OpenSSL by Per Allansson.
- (CVE-2015-0207)
- [Matt Caswell]
-
- *) Segmentation fault in ASN1_TYPE_cmp fix
-
- The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
- made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
- certificate signature algorithm consistency this can be used to crash any
- certificate verification operation and exploited in a DoS attack. Any
- application which performs certificate verification is vulnerable including
- OpenSSL clients and servers which enable client authentication.
- (CVE-2015-0286)
- [Stephen Henson]
-
- *) Segmentation fault for invalid PSS parameters fix
-
- The signature verification routines will crash with a NULL pointer
- dereference if presented with an ASN.1 signature using the RSA PSS
- algorithm and invalid parameters. Since these routines are used to verify
- certificate signature algorithms this can be used to crash any
- certificate verification operation and exploited in a DoS attack. Any
- application which performs certificate verification is vulnerable including
- OpenSSL clients and servers which enable client authentication.
-
- This issue was was reported to OpenSSL by Brian Carpenter.
- (CVE-2015-0208)
- [Stephen Henson]
-
- *) ASN.1 structure reuse memory corruption fix
-
- Reusing a structure in ASN.1 parsing may allow an attacker to cause
- memory corruption via an invalid write. Such reuse is and has been
- strongly discouraged and is believed to be rare.
-
- Applications that parse structures containing CHOICE or ANY DEFINED BY
- components may be affected. Certificate parsing (d2i_X509 and related
- functions) are however not affected. OpenSSL clients and servers are
- not affected.
- (CVE-2015-0287)
- [Stephen Henson]
-
- *) PKCS7 NULL pointer dereferences fix
-
- The PKCS#7 parsing code does not handle missing outer ContentInfo
- correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
- missing content and trigger a NULL pointer dereference on parsing.
-
- Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
- otherwise parse PKCS#7 structures from untrusted sources are
- affected. OpenSSL clients and servers are not affected.
-
- This issue was reported to OpenSSL by Michal Zalewski (Google).
- (CVE-2015-0289)
- [Emilia Käsper]
-
- *) DoS via reachable assert in SSLv2 servers fix
-
- A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
- servers that both support SSLv2 and enable export cipher suites by sending
- a specially crafted SSLv2 CLIENT-MASTER-KEY message.
-
- This issue was discovered by Sean Burford (Google) and Emilia Käsper
- (OpenSSL development team).
- (CVE-2015-0293)
- [Emilia Käsper]
-
- *) Empty CKE with client auth and DHE fix
-
- If client auth is used then a server can seg fault in the event of a DHE
- ciphersuite being selected and a zero length ClientKeyExchange message
- being sent by the client. This could be exploited in a DoS attack.
- (CVE-2015-1787)
- [Matt Caswell]
-
- *) Handshake with unseeded PRNG fix
-
- Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
- with an unseeded PRNG. The conditions are:
- - The client is on a platform where the PRNG has not been seeded
- automatically, and the user has not seeded manually
- - A protocol specific client method version has been used (i.e. not
- SSL_client_methodv23)
- - A ciphersuite is used that does not require additional random data from
- the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
-
- If the handshake succeeds then the client random that has been used will
- have been generated from a PRNG with insufficient entropy and therefore the
- output may be predictable.
-
- For example using the following command with an unseeded openssl will
- succeed on an unpatched platform:
-
- openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
- (CVE-2015-0285)
- [Matt Caswell]
-
- *) Use After Free following d2i_ECPrivatekey error fix
-
- A malformed EC private key file consumed via the d2i_ECPrivateKey function
- could cause a use after free condition. This, in turn, could cause a double
- free in several private key parsing functions (such as d2i_PrivateKey
- or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
- for applications that receive EC private keys from untrusted
- sources. This scenario is considered rare.
-
- This issue was discovered by the BoringSSL project and fixed in their
- commit 517073cd4b.
- (CVE-2015-0209)
- [Matt Caswell]
-
- *) X509_to_X509_REQ NULL pointer deref fix
-
- The function X509_to_X509_REQ will crash with a NULL pointer dereference if
- the certificate key is invalid. This function is rarely used in practice.
-
- This issue was discovered by Brian Carpenter.
- (CVE-2015-0288)
- [Stephen Henson]
-
- *) Removed the export ciphers from the DEFAULT ciphers
- [Kurt Roeckx]
-
- Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
-
- *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
- ARMv5 through ARMv8, as opposite to "locking" it to single one.
- So far those who have to target multiple platforms would compromise
- and argue that binary targeting say ARMv5 would still execute on
- ARMv8. "Universal" build resolves this compromise by providing
- near-optimal performance even on newer platforms.
- [Andy Polyakov]
-
- *) Accelerated NIST P-256 elliptic curve implementation for x86_64
- (other platforms pending).
- [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
-
- *) Add support for the SignedCertificateTimestampList certificate and
- OCSP response extensions from RFC6962.
- [Rob Stradling]
-
- *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
- for corner cases. (Certain input points at infinity could lead to
- bogus results, with non-infinity inputs mapped to infinity too.)
- [Bodo Moeller]
-
- *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
- This covers AES, SHA256/512 and GHASH. "Initial" means that most
- common cases are optimized and there still is room for further
- improvements. Vector Permutation AES for Altivec is also added.
- [Andy Polyakov]
-
- *) Add support for little-endian ppc64 Linux target.
- [Marcelo Cerri (IBM)]
-
- *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
- SHA1, SHA256 and GHASH. "Initial" means that most common cases
- are optimized and there still is room for further improvements.
- Both 32- and 64-bit modes are supported.
- [Andy Polyakov, Ard Biesheuvel (Linaro)]
-
- *) Improved ARMv7 NEON support.
- [Andy Polyakov]
-
- *) Support for SPARC Architecture 2011 crypto extensions, first
- implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
- SHA256/512, MD5, GHASH and modular exponentiation.
- [Andy Polyakov, David Miller]
-
- *) Accelerated modular exponentiation for Intel processors, a.k.a.
- RSAZ.
- [Shay Gueron & Vlad Krasnov (Intel Corp)]
-
- *) Support for new and upcoming Intel processors, including AVX2,
- BMI and SHA ISA extensions. This includes additional "stitched"
- implementations, AESNI-SHA256 and GCM, and multi-buffer support
- for TLS encrypt.
-
- This work was sponsored by Intel Corp.
- [Andy Polyakov]
-
- *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
- supports both DTLS 1.2 and 1.0 and should use whatever version the peer
- supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
- [Steve Henson]
-
- *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
- this fixes a limitation in previous versions of OpenSSL.
- [Steve Henson]
-
- *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
- MGF1 digest and OAEP label.
- [Steve Henson]
-
- *) Add EVP support for key wrapping algorithms, to avoid problems with
- existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
- the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
- algorithms and include tests cases.
- [Steve Henson]
-
- *) Add functions to allocate and set the fields of an ECDSA_METHOD
- structure.
- [Douglas E. Engert, Steve Henson]
-
- *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
- difference in days and seconds between two tm or ASN1_TIME structures.
- [Steve Henson]
-
- *) Add -rev test option to s_server to just reverse order of characters
- received by client and send back to server. Also prints an abbreviated
- summary of the connection parameters.
- [Steve Henson]
-
- *) New option -brief for s_client and s_server to print out a brief summary
- of connection parameters.
- [Steve Henson]
-
- *) Add callbacks for arbitrary TLS extensions.
- [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
-
- *) New option -crl_download in several openssl utilities to download CRLs
- from CRLDP extension in certificates.
- [Steve Henson]
-
- *) New options -CRL and -CRLform for s_client and s_server for CRLs.
- [Steve Henson]
-
- *) New function X509_CRL_diff to generate a delta CRL from the difference
- of two full CRLs. Add support to "crl" utility.
- [Steve Henson]
-
- *) New functions to set lookup_crls function and to retrieve
- X509_STORE from X509_STORE_CTX.
- [Steve Henson]
-
- *) Print out deprecated issuer and subject unique ID fields in
- certificates.
- [Steve Henson]
-
- *) Extend OCSP I/O functions so they can be used for simple general purpose
- HTTP as well as OCSP. New wrapper function which can be used to download
- CRLs using the OCSP API.
- [Steve Henson]
-
- *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
- [Steve Henson]
-
- *) SSL_CONF* functions. These provide a common framework for application
- configuration using configuration files or command lines.
- [Steve Henson]
-
- *) SSL/TLS tracing code. This parses out SSL/TLS records using the
- message callback and prints the results. Needs compile time option
- "enable-ssl-trace". New options to s_client and s_server to enable
- tracing.
- [Steve Henson]
-
- *) New ctrl and macro to retrieve supported points extensions.
- Print out extension in s_server and s_client.
- [Steve Henson]
-
- *) New functions to retrieve certificate signature and signature
- OID NID.
- [Steve Henson]
-
- *) Add functions to retrieve and manipulate the raw cipherlist sent by a
- client to OpenSSL.
- [Steve Henson]
-
- *) New Suite B modes for TLS code. These use and enforce the requirements
- of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
- only use Suite B curves. The Suite B modes can be set by using the
- strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
- [Steve Henson]
-
- *) New chain verification flags for Suite B levels of security. Check
- algorithms are acceptable when flags are set in X509_verify_cert.
- [Steve Henson]
-
- *) Make tls1_check_chain return a set of flags indicating checks passed
- by a certificate chain. Add additional tests to handle client
- certificates: checks for matching certificate type and issuer name
- comparison.
- [Steve Henson]
-
- *) If an attempt is made to use a signature algorithm not in the peer
- preference list abort the handshake. If client has no suitable
- signature algorithms in response to a certificate request do not
- use the certificate.
- [Steve Henson]
-
- *) If server EC tmp key is not in client preference list abort handshake.
- [Steve Henson]
-
- *) Add support for certificate stores in CERT structure. This makes it
- possible to have different stores per SSL structure or one store in
- the parent SSL_CTX. Include distinct stores for certificate chain
- verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
- to build and store a certificate chain in CERT structure: returning
- an error if the chain cannot be built: this will allow applications
- to test if a chain is correctly configured.
-
- Note: if the CERT based stores are not set then the parent SSL_CTX
- store is used to retain compatibility with existing behaviour.
-
- [Steve Henson]
-
- *) New function ssl_set_client_disabled to set a ciphersuite disabled
- mask based on the current session, check mask when sending client
- hello and checking the requested ciphersuite.
- [Steve Henson]
-
- *) New ctrls to retrieve and set certificate types in a certificate
- request message. Print out received values in s_client. If certificate
- types is not set with custom values set sensible values based on
- supported signature algorithms.
- [Steve Henson]
-
- *) Support for distinct client and server supported signature algorithms.
- [Steve Henson]
-
- *) Add certificate callback. If set this is called whenever a certificate
- is required by client or server. An application can decide which
- certificate chain to present based on arbitrary criteria: for example
- supported signature algorithms. Add very simple example to s_server.
- This fixes many of the problems and restrictions of the existing client
- certificate callback: for example you can now clear an existing
- certificate and specify the whole chain.
- [Steve Henson]
-
- *) Add new "valid_flags" field to CERT_PKEY structure which determines what
- the certificate can be used for (if anything). Set valid_flags field
- in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
- to have similar checks in it.
-
- Add new "cert_flags" field to CERT structure and include a "strict mode".
- This enforces some TLS certificate requirements (such as only permitting
- certificate signature algorithms contained in the supported algorithms
- extension) which some implementations ignore: this option should be used
- with caution as it could cause interoperability issues.
- [Steve Henson]
-
- *) Update and tidy signature algorithm extension processing. Work out
- shared signature algorithms based on preferences and peer algorithms
- and print them out in s_client and s_server. Abort handshake if no
- shared signature algorithms.
- [Steve Henson]
-
- *) Add new functions to allow customised supported signature algorithms
- for SSL and SSL_CTX structures. Add options to s_client and s_server
- to support them.
- [Steve Henson]
-
- *) New function SSL_certs_clear() to delete all references to certificates
- from an SSL structure. Before this once a certificate had been added
- it couldn't be removed.
- [Steve Henson]
-
- *) Integrate hostname, email address and IP address checking with certificate
- verification. New verify options supporting checking in openssl utility.
- [Steve Henson]
-
- *) Fixes and wildcard matching support to hostname and email checking
- functions. Add manual page.
- [Florian Weimer (Red Hat Product Security Team)]
-
- *) New functions to check a hostname email or IP address against a
- certificate. Add options x509 utility to print results of checks against
- a certificate.
- [Steve Henson]
-
- *) Fix OCSP checking.
- [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
-
- *) Initial experimental support for explicitly trusted non-root CAs.
- OpenSSL still tries to build a complete chain to a root but if an
- intermediate CA has a trust setting included that is used. The first
- setting is used: whether to trust (e.g., -addtrust option to the x509
- utility) or reject.
- [Steve Henson]
-
- *) Add -trusted_first option which attempts to find certificates in the
- trusted store even if an untrusted chain is also supplied.
- [Steve Henson]
-
- *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
- platform support for Linux and Android.
- [Andy Polyakov]
-
- *) Support for linux-x32, ILP32 environment in x86_64 framework.
- [Andy Polyakov]
-
- *) Experimental multi-implementation support for FIPS capable OpenSSL.
- When in FIPS mode the approved implementations are used as normal,
- when not in FIPS mode the internal unapproved versions are used instead.
- This means that the FIPS capable OpenSSL isn't forced to use the
- (often lower performance) FIPS implementations outside FIPS mode.
- [Steve Henson]
-
- *) Transparently support X9.42 DH parameters when calling
- PEM_read_bio_DHparameters. This means existing applications can handle
- the new parameter format automatically.
- [Steve Henson]
-
- *) Initial experimental support for X9.42 DH parameter format: mainly
- to support use of 'q' parameter for RFC5114 parameters.
- [Steve Henson]
-
- *) Add DH parameters from RFC5114 including test data to dhtest.
- [Steve Henson]
-
- *) Support for automatic EC temporary key parameter selection. If enabled
- the most preferred EC parameters are automatically used instead of
- hardcoded fixed parameters. Now a server just has to call:
- SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
- support ECDH and use the most appropriate parameters.
- [Steve Henson]
-
- *) Enhance and tidy EC curve and point format TLS extension code. Use
- static structures instead of allocation if default values are used.
- New ctrls to set curves we wish to support and to retrieve shared curves.
- Print out shared curves in s_server. New options to s_server and s_client
- to set list of supported curves.
- [Steve Henson]
-
- *) New ctrls to retrieve supported signature algorithms and
- supported curve values as an array of NIDs. Extend openssl utility
- to print out received values.
- [Steve Henson]
-
- *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
- between NIDs and the more common NIST names such as "P-256". Enhance
- ecparam utility and ECC method to recognise the NIST names for curves.
- [Steve Henson]
-
- *) Enhance SSL/TLS certificate chain handling to support different
- chains for each certificate instead of one chain in the parent SSL_CTX.
- [Steve Henson]
-
- *) Support for fixed DH ciphersuite client authentication: where both
- server and client use DH certificates with common parameters.
- [Steve Henson]
-
- *) Support for fixed DH ciphersuites: those requiring DH server
- certificates.
- [Steve Henson]
-
- *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
- the certificate.
- Note: Related 1.0.2-beta specific macros X509_get_cert_info,
- X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
- X509_CINF_get_signature were reverted post internal team review.
-
- Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
-
- *) Build fixes for the Windows and OpenVMS platforms
- [Matt Caswell and Richard Levitte]
-
- Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
-
- *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
- message can cause a segmentation fault in OpenSSL due to a NULL pointer
- dereference. This could lead to a Denial Of Service attack. Thanks to
- Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
- (CVE-2014-3571)
- [Steve Henson]
-
- *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
- dtls1_buffer_record function under certain conditions. In particular this
- could occur if an attacker sent repeated DTLS records with the same
- sequence number but for the next epoch. The memory leak could be exploited
- by an attacker in a Denial of Service attack through memory exhaustion.
- Thanks to Chris Mueller for reporting this issue.
- (CVE-2015-0206)
- [Matt Caswell]
-
- *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
- built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
- method would be set to NULL which could later result in a NULL pointer
- dereference. Thanks to Frank Schmirler for reporting this issue.
- (CVE-2014-3569)
- [Kurt Roeckx]
-
- *) Abort handshake if server key exchange message is omitted for ephemeral
- ECDH ciphersuites.
-
- Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
- reporting this issue.
- (CVE-2014-3572)
- [Steve Henson]
-
- *) Remove non-export ephemeral RSA code on client and server. This code
- violated the TLS standard by allowing the use of temporary RSA keys in
- non-export ciphersuites and could be used by a server to effectively
- downgrade the RSA key length used to a value smaller than the server
- certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
- INRIA or reporting this issue.
- (CVE-2015-0204)
- [Steve Henson]
-
- *) Fixed issue where DH client certificates are accepted without verification.
- An OpenSSL server will accept a DH certificate for client authentication
- without the certificate verify message. This effectively allows a client to
- authenticate without the use of a private key. This only affects servers
- which trust a client certificate authority which issues certificates
- containing DH keys: these are extremely rare and hardly ever encountered.
- Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
- this issue.
- (CVE-2015-0205)
- [Steve Henson]
-
- *) Ensure that the session ID context of an SSL is updated when its
- SSL_CTX is updated via SSL_set_SSL_CTX.
-
- The session ID context is typically set from the parent SSL_CTX,
- and can vary with the CTX.
- [Adam Langley]
-
- *) Fix various certificate fingerprint issues.
-
- By using non-DER or invalid encodings outside the signed portion of a
- certificate the fingerprint can be changed without breaking the signature.
- Although no details of the signed portion of the certificate can be changed
- this can cause problems with some applications: e.g. those using the
- certificate fingerprint for blacklists.
-
- 1. Reject signatures with non zero unused bits.
-
- If the BIT STRING containing the signature has non zero unused bits reject
- the signature. All current signature algorithms require zero unused bits.
-
- 2. Check certificate algorithm consistency.
-
- Check the AlgorithmIdentifier inside TBS matches the one in the
- certificate signature. NB: this will result in signature failure
- errors for some broken certificates.
-
- Thanks to Konrad Kraszewski from Google for reporting this issue.
-
- 3. Check DSA/ECDSA signatures use DER.
-
- Re-encode DSA/ECDSA signatures and compare with the original received
- signature. Return an error if there is a mismatch.
-
- This will reject various cases including garbage after signature
- (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
- program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
- (negative or with leading zeroes).
-
- Further analysis was conducted and fixes were developed by Stephen Henson
- of the OpenSSL core team.
-
- (CVE-2014-8275)
- [Steve Henson]
-
- *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
- results on some platforms, including x86_64. This bug occurs at random
- with a very low probability, and is not known to be exploitable in any
- way, though its exact impact is difficult to determine. Thanks to Pieter
- Wuille (Blockstream) who reported this issue and also suggested an initial
- fix. Further analysis was conducted by the OpenSSL development team and
- Adam Langley of Google. The final fix was developed by Andy Polyakov of
- the OpenSSL core team.
- (CVE-2014-3570)
- [Andy Polyakov]
-
- *) Do not resume sessions on the server if the negotiated protocol
- version does not match the session's version. Resuming with a different
- version, while not strictly forbidden by the RFC, is of questionable
- sanity and breaks all known clients.
- [David Benjamin, Emilia Käsper]
-
- *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
- early CCS messages during renegotiation. (Note that because
- renegotiation is encrypted, this early CCS was not exploitable.)
- [Emilia Käsper]
-
- *) Tighten client-side session ticket handling during renegotiation:
- ensure that the client only accepts a session ticket if the server sends
- the extension anew in the ServerHello. Previously, a TLS client would
- reuse the old extension state and thus accept a session ticket if one was
- announced in the initial ServerHello.
-
- Similarly, ensure that the client requires a session ticket if one
- was advertised in the ServerHello. Previously, a TLS client would
- ignore a missing NewSessionTicket message.
- [Emilia Käsper]
-
- Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
-
- *) SRTP Memory Leak.
-
- A flaw in the DTLS SRTP extension parsing code allows an attacker, who
- sends a carefully crafted handshake message, to cause OpenSSL to fail
- to free up to 64k of memory causing a memory leak. This could be
- exploited in a Denial Of Service attack. This issue affects OpenSSL
- 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
- whether SRTP is used or configured. Implementations of OpenSSL that
- have been compiled with OPENSSL_NO_SRTP defined are not affected.
-
- The fix was developed by the OpenSSL team.
- (CVE-2014-3513)
- [OpenSSL team]
-
- *) Session Ticket Memory Leak.
-
- When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
- integrity of that ticket is first verified. In the event of a session
- ticket integrity check failing, OpenSSL will fail to free memory
- causing a memory leak. By sending a large number of invalid session
- tickets an attacker could exploit this issue in a Denial Of Service
- attack.
- (CVE-2014-3567)
- [Steve Henson]
-
- *) Build option no-ssl3 is incomplete.
-
- When OpenSSL is configured with "no-ssl3" as a build option, servers
- could accept and complete a SSL 3.0 handshake, and clients could be
- configured to send them.
- (CVE-2014-3568)
- [Akamai and the OpenSSL team]
-
- *) Add support for TLS_FALLBACK_SCSV.
- Client applications doing fallback retries should call
- SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
- (CVE-2014-3566)
- [Adam Langley, Bodo Moeller]
-
- *) Add additional DigestInfo checks.
-
- Re-encode DigestInto in DER and check against the original when
- verifying RSA signature: this will reject any improperly encoded
- DigestInfo structures.
-
- Note: this is a precautionary measure and no attacks are currently known.
-
- [Steve Henson]
-
- Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
-
- *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
- SRP code can be overrun an internal buffer. Add sanity check that
- g, A, B < N to SRP code.
-
- Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
- Group for discovering this issue.
- (CVE-2014-3512)
- [Steve Henson]
-
- *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
- TLS 1.0 instead of higher protocol versions when the ClientHello message
- is badly fragmented. This allows a man-in-the-middle attacker to force a
- downgrade to TLS 1.0 even if both the server and the client support a
- higher protocol version, by modifying the client's TLS records.
-
- Thanks to David Benjamin and Adam Langley (Google) for discovering and
- researching this issue.
- (CVE-2014-3511)
- [David Benjamin]
-
- *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
- to a denial of service attack. A malicious server can crash the client
- with a null pointer dereference (read) by specifying an anonymous (EC)DH
- ciphersuite and sending carefully crafted handshake messages.
-
- Thanks to Felix Gröbert (Google) for discovering and researching this
- issue.
- (CVE-2014-3510)
- [Emilia Käsper]
-
- *) By sending carefully crafted DTLS packets an attacker could cause openssl
- to leak memory. This can be exploited through a Denial of Service attack.
- Thanks to Adam Langley for discovering and researching this issue.
- (CVE-2014-3507)
- [Adam Langley]
-
- *) An attacker can force openssl to consume large amounts of memory whilst
- processing DTLS handshake messages. This can be exploited through a
- Denial of Service attack.
- Thanks to Adam Langley for discovering and researching this issue.
- (CVE-2014-3506)
- [Adam Langley]
-
- *) An attacker can force an error condition which causes openssl to crash
- whilst processing DTLS packets due to memory being freed twice. This
- can be exploited through a Denial of Service attack.
- Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
- this issue.
- (CVE-2014-3505)
- [Adam Langley]
-
- *) If a multithreaded client connects to a malicious server using a resumed
- session and the server sends an ec point format extension it could write
- up to 255 bytes to freed memory.
-
- Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
- issue.
- (CVE-2014-3509)
- [Gabor Tyukasz]
-
- *) A malicious server can crash an OpenSSL client with a null pointer
- dereference (read) by specifying an SRP ciphersuite even though it was not
- properly negotiated with the client. This can be exploited through a
- Denial of Service attack.
-
- Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
- discovering and researching this issue.
- (CVE-2014-5139)
- [Steve Henson]
-
- *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
- X509_name_oneline, X509_name_print_ex et al. to leak some information
- from the stack. Applications may be affected if they echo pretty printing
- output to the attacker.
-
- Thanks to Ivan Fratric (Google) for discovering this issue.
- (CVE-2014-3508)
- [Emilia Käsper, and Steve Henson]
-
- *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
- for corner cases. (Certain input points at infinity could lead to
- bogus results, with non-infinity inputs mapped to infinity too.)
- [Bodo Moeller]
-
- Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
-
- *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
- handshake can force the use of weak keying material in OpenSSL
- SSL/TLS clients and servers.
-
- Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
- researching this issue. (CVE-2014-0224)
- [KIKUCHI Masashi, Steve Henson]
-
- *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
- OpenSSL DTLS client the code can be made to recurse eventually crashing
- in a DoS attack.
-
- Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
- (CVE-2014-0221)
- [Imre Rad, Steve Henson]
-
- *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
- be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
- client or server. This is potentially exploitable to run arbitrary
- code on a vulnerable client or server.
-
- Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
- [Jüri Aedla, Steve Henson]
-
- *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
- are subject to a denial of service attack.
-
- Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
- this issue. (CVE-2014-3470)
- [Felix Gröbert, Ivan Fratric, Steve Henson]
-
- *) Harmonize version and its documentation. -f flag is used to display
- compilation flags.
- [mancha <mancha1@zoho.com>]
-
- *) Fix eckey_priv_encode so it immediately returns an error upon a failure
- in i2d_ECPrivateKey.
- [mancha <mancha1@zoho.com>]
-
- *) Fix some double frees. These are not thought to be exploitable.
- [mancha <mancha1@zoho.com>]
-
- Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
-
- *) A missing bounds check in the handling of the TLS heartbeat extension
- can be used to reveal up to 64k of memory to a connected client or
- server.
-
- Thanks for Neel Mehta of Google Security for discovering this bug and to
- Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
- preparing the fix (CVE-2014-0160)
- [Adam Langley, Bodo Moeller]
-
- *) Fix for the attack described in the paper "Recovering OpenSSL
- ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
- by Yuval Yarom and Naomi Benger. Details can be obtained from:
- http://eprint.iacr.org/2014/140
-
- Thanks to Yuval Yarom and Naomi Benger for discovering this
- flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
- [Yuval Yarom and Naomi Benger]
+ * Change the interpretation of the '--api' configuration option to
+ mean that this is a desired API compatibility level with no
+ further meaning. The previous interpretation, that this would
+ also mean to remove all deprecated symbols up to and including
+ the given version, no requires that 'no-deprecated' is also used
+ in the configuration.
+
+ When building applications, the desired API compatibility level
+ can be set with the OPENSSL_API_COMPAT macro like before. For
+ API compatibility version below 3.0, the old style numerical
+ value is valid as before, such as -DOPENSSL_API_COMPAT=0x10100000L.
+ For version 3.0 and on, the value is expected to be the decimal
+ value calculated from the major and minor version like this:
- *) TLS pad extension: draft-agl-tls-padding-03
+ MAJOR * 10000 + MINOR * 100
- Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
- TLS client Hello record length value would otherwise be > 255 and
- less that 512 pad with a dummy extension containing zeroes so it
- is at least 512 bytes long.
-
- [Adam Langley, Steve Henson]
-
- Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
-
- *) Fix for TLS record tampering bug. A carefully crafted invalid
- handshake could crash OpenSSL with a NULL pointer exception.
- Thanks to Anton Johansson for reporting this issues.
- (CVE-2013-4353)
-
- *) Keep original DTLS digest and encryption contexts in retransmission
- structures so we can use the previous session parameters if they need
- to be resent. (CVE-2013-6450)
- [Steve Henson]
-
- *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
- avoids preferring ECDHE-ECDSA ciphers when the client appears to be
- Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
- several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
- is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
- 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
- [Rob Stradling, Adam Langley]
-
- Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
-
- *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
- supporting platforms or when small records were transferred.
- [Andy Polyakov, Steve Henson]
-
- Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
-
- *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
-
- This addresses the flaw in CBC record processing discovered by
- Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
- at: http://www.isg.rhul.ac.uk/tls/
-
- Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
- Security Group at Royal Holloway, University of London
- (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
- Emilia Käsper for the initial patch.
- (CVE-2013-0169)
- [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
-
- *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
- ciphersuites which can be exploited in a denial of service attack.
- Thanks go to and to Adam Langley <agl@chromium.org> for discovering
- and detecting this bug and to Wolfgang Ettlinger
- <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
- (CVE-2012-2686)
- [Adam Langley]
-
- *) Return an error when checking OCSP signatures when key is NULL.
- This fixes a DoS attack. (CVE-2013-0166)
- [Steve Henson]
-
- *) Make openssl verify return errors.
- [Chris Palmer <palmer@google.com> and Ben Laurie]
-
- *) Call OCSP Stapling callback after ciphersuite has been chosen, so
- the right response is stapled. Also change SSL_get_certificate()
- so it returns the certificate actually sent.
- See http://rt.openssl.org/Ticket/Display.html?id=2836.
- [Rob Stradling <rob.stradling@comodo.com>]
-
- *) Fix possible deadlock when decoding public keys.
- [Steve Henson]
-
- *) Don't use TLS 1.0 record version number in initial client hello
- if renegotiating.
- [Steve Henson]
-
- Changes between 1.0.1b and 1.0.1c [10 May 2012]
-
- *) Sanity check record length before skipping explicit IV in TLS
- 1.2, 1.1 and DTLS to fix DoS attack.
-
- Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
- fuzzing as a service testing platform.
- (CVE-2012-2333)
- [Steve Henson]
-
- *) Initialise tkeylen properly when encrypting CMS messages.
- Thanks to Solar Designer of Openwall for reporting this issue.
- [Steve Henson]
-
- *) In FIPS mode don't try to use composite ciphers as they are not
- approved.
- [Steve Henson]
-
- Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
-
- *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
- 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
- mean any application compiled against OpenSSL 1.0.0 headers setting
- SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
- TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
- 0x10000000L Any application which was previously compiled against
- OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
- will need to be recompiled as a result. Letting be results in
- inability to disable specifically TLS 1.1 and in client context,
- in unlike event, limit maximum offered version to TLS 1.0 [see below].
- [Steve Henson]
-
- *) In order to ensure interoperability SSL_OP_NO_protocolX does not
- disable just protocol X, but all protocols above X *if* there are
- protocols *below* X still enabled. In more practical terms it means
- that if application wants to disable TLS1.0 in favor of TLS1.1 and
- above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
- SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
- client side.
- [Andy Polyakov]
-
- Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
-
- *) Check for potentially exploitable overflows in asn1_d2i_read_bio
- BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
- in CRYPTO_realloc_clean.
-
- Thanks to Tavis Ormandy, Google Security Team, for discovering this
- issue and to Adam Langley <agl@chromium.org> for fixing it.
- (CVE-2012-2110)
- [Adam Langley (Google), Tavis Ormandy, Google Security Team]
-
- *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
- [Adam Langley]
-
- *) Workarounds for some broken servers that "hang" if a client hello
- record length exceeds 255 bytes.
-
- 1. Do not use record version number > TLS 1.0 in initial client
- hello: some (but not all) hanging servers will now work.
- 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
- the number of ciphers sent in the client hello. This should be
- set to an even number, such as 50, for example by passing:
- -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
- Most broken servers should now work.
- 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
- TLS 1.2 client support entirely.
- [Steve Henson]
-
- *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
- [Andy Polyakov]
-
- Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
-
- *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
- STRING form instead of a DigestInfo.
- [Steve Henson]
-
- *) The format used for MDC2 RSA signatures is inconsistent between EVP
- and the RSA_sign/RSA_verify functions. This was made more apparent when
- OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
- those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
- the correct format in RSA_verify so both forms transparently work.
- [Steve Henson]
-
- *) Some servers which support TLS 1.0 can choke if we initially indicate
- support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
- encrypted premaster secret. As a workaround use the maximum permitted
- client version in client hello, this should keep such servers happy
- and still work with previous versions of OpenSSL.
- [Steve Henson]
-
- *) Add support for TLS/DTLS heartbeats.
- [Robin Seggelmann <seggelmann@fh-muenster.de>]
-
- *) Add support for SCTP.
- [Robin Seggelmann <seggelmann@fh-muenster.de>]
-
- *) Improved PRNG seeding for VOS.
- [Paul Green <Paul.Green@stratus.com>]
-
- *) Extensive assembler packs updates, most notably:
-
- - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
- - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
- - x86_64: bit-sliced AES implementation;
- - ARM: NEON support, contemporary platforms optimizations;
- - s390x: z196 support;
- - *: GHASH and GF(2^m) multiplication implementations;
-
- [Andy Polyakov]
-
- *) Make TLS-SRP code conformant with RFC 5054 API cleanup
- (removal of unnecessary code)
- [Peter Sylvester <peter.sylvester@edelweb.fr>]
-
- *) Add TLS key material exporter from RFC 5705.
- [Eric Rescorla]
-
- *) Add DTLS-SRTP negotiation from RFC 5764.
- [Eric Rescorla]
-
- *) Add Next Protocol Negotiation,
- http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
- disabled with a no-npn flag to config or Configure. Code donated
- by Google.
- [Adam Langley <agl@google.com> and Ben Laurie]
-
- *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
- NIST-P256, NIST-P521, with constant-time single point multiplication on
- typical inputs. Compiler support for the nonstandard type __uint128_t is
- required to use this (present in gcc 4.4 and later, for 64-bit builds).
- Code made available under Apache License version 2.0.
-
- Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
- line to include this in your build of OpenSSL, and run "make depend" (or
- "make update"). This enables the following EC_METHODs:
-
- EC_GFp_nistp224_method()
- EC_GFp_nistp256_method()
- EC_GFp_nistp521_method()
-
- EC_GROUP_new_by_curve_name() will automatically use these (while
- EC_GROUP_new_curve_GFp() currently prefers the more flexible
- implementations).
- [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
-
- *) Use type ossl_ssize_t instead of ssize_t which isn't available on
- all platforms. Move ssize_t definition from e_os.h to the public
- header file e_os2.h as it now appears in public header file cms.h
- [Steve Henson]
-
- *) New -sigopt option to the ca, req and x509 utilities. Additional
- signature parameters can be passed using this option and in
- particular PSS.
- [Steve Henson]
-
- *) Add RSA PSS signing function. This will generate and set the
- appropriate AlgorithmIdentifiers for PSS based on those in the
- corresponding EVP_MD_CTX structure. No application support yet.
- [Steve Henson]
-
- *) Support for companion algorithm specific ASN1 signing routines.
- New function ASN1_item_sign_ctx() signs a pre-initialised
- EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
- the appropriate parameters.
- [Steve Henson]
-
- *) Add new algorithm specific ASN1 verification initialisation function
- to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
- handling will be the same no matter what EVP_PKEY_METHOD is used.
- Add a PSS handler to support verification of PSS signatures: checked
- against a number of sample certificates.
- [Steve Henson]
-
- *) Add signature printing for PSS. Add PSS OIDs.
- [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
-
- *) Add algorithm specific signature printing. An individual ASN1 method
- can now print out signatures instead of the standard hex dump.
-
- More complex signatures (e.g. PSS) can print out more meaningful
- information. Include DSA version that prints out the signature
- parameters r, s.
- [Steve Henson]
-
- *) Password based recipient info support for CMS library: implementing
- RFC3211.
- [Steve Henson]
-
- *) Split password based encryption into PBES2 and PBKDF2 functions. This
- neatly separates the code into cipher and PBE sections and is required
- for some algorithms that split PBES2 into separate pieces (such as
- password based CMS).
- [Steve Henson]
-
- *) Session-handling fixes:
- - Fix handling of connections that are resuming with a session ID,
- but also support Session Tickets.
- - Fix a bug that suppressed issuing of a new ticket if the client
- presented a ticket with an expired session.
- - Try to set the ticket lifetime hint to something reasonable.
- - Make tickets shorter by excluding irrelevant information.
- - On the client side, don't ignore renewed tickets.
- [Adam Langley, Bodo Moeller (Google)]
-
- *) Fix PSK session representation.
- [Bodo Moeller]
-
- *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
-
- This work was sponsored by Intel.
- [Andy Polyakov]
-
- *) Add GCM support to TLS library. Some custom code is needed to split
- the IV between the fixed (from PRF) and explicit (from TLS record)
- portions. This adds all GCM ciphersuites supported by RFC5288 and
- RFC5289. Generalise some AES* cipherstrings to include GCM and
- add a special AESGCM string for GCM only.
- [Steve Henson]
-
- *) Expand range of ctrls for AES GCM. Permit setting invocation
- field on decrypt and retrieval of invocation field only on encrypt.
- [Steve Henson]
-
- *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
- As required by RFC5289 these ciphersuites cannot be used if for
- versions of TLS earlier than 1.2.
- [Steve Henson]
-
- *) For FIPS capable OpenSSL interpret a NULL default public key method
- as unset and return the appropriate default but do *not* set the default.
- This means we can return the appropriate method in applications that
- switch between FIPS and non-FIPS modes.
- [Steve Henson]
-
- *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
- ENGINE is used then we cannot handle that in the FIPS module so we
- keep original code iff non-FIPS operations are allowed.
- [Steve Henson]
-
- *) Add -attime option to openssl utilities.
- [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
-
- *) Redirect DSA and DH operations to FIPS module in FIPS mode.
- [Steve Henson]
-
- *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
- FIPS EC methods unconditionally for now.
- [Steve Henson]
-
- *) New build option no-ec2m to disable characteristic 2 code.
- [Steve Henson]
-
- *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
- all cases can be covered as some introduce binary incompatibilities.
- [Steve Henson]
-
- *) Redirect RSA operations to FIPS module including keygen,
- encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
- [Steve Henson]
-
- *) Add similar low level API blocking to ciphers.
- [Steve Henson]
-
- *) Low level digest APIs are not approved in FIPS mode: any attempt
- to use these will cause a fatal error. Applications that *really* want
- to use them can use the private_* version instead.
- [Steve Henson]
-
- *) Redirect cipher operations to FIPS module for FIPS builds.
- [Steve Henson]
-
- *) Redirect digest operations to FIPS module for FIPS builds.
- [Steve Henson]
-
- *) Update build system to add "fips" flag which will link in fipscanister.o
- for static and shared library builds embedding a signature if needed.
- [Steve Henson]
-
- *) Output TLS supported curves in preference order instead of numerical
- order. This is currently hardcoded for the highest order curves first.
- This should be configurable so applications can judge speed vs strength.
- [Steve Henson]
-
- *) Add TLS v1.2 server support for client authentication.
- [Steve Henson]
-
- *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
- and enable MD5.
- [Steve Henson]
-
- *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
- FIPS modules versions.
- [Steve Henson]
-
- *) Add TLS v1.2 client side support for client authentication. Keep cache
- of handshake records longer as we don't know the hash algorithm to use
- until after the certificate request message is received.
- [Steve Henson]
-
- *) Initial TLS v1.2 client support. Add a default signature algorithms
- extension including all the algorithms we support. Parse new signature
- format in client key exchange. Relax some ECC signing restrictions for
- TLS v1.2 as indicated in RFC5246.
- [Steve Henson]
-
- *) Add server support for TLS v1.2 signature algorithms extension. Switch
- to new signature format when needed using client digest preference.
- All server ciphersuites should now work correctly in TLS v1.2. No client
- support yet and no support for client certificates.
- [Steve Henson]
-
- *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
- to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
- ciphersuites. At present only RSA key exchange ciphersuites work with
- TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
- SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
- and version checking.
- [Steve Henson]
-
- *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
- with this defined it will not be affected by any changes to ssl internal
- structures. Add several utility functions to allow openssl application
- to work with OPENSSL_NO_SSL_INTERN defined.
- [Steve Henson]
-
- *) A long standing patch to add support for SRP from EdelWeb (Peter
- Sylvester and Christophe Renou) was integrated.
- [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
- <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
- Ben Laurie]
-
- *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
- [Steve Henson]
-
- *) Permit abbreviated handshakes when renegotiating using the function
- SSL_renegotiate_abbreviated().
- [Robin Seggelmann <seggelmann@fh-muenster.de>]
-
- *) Add call to ENGINE_register_all_complete() to
- ENGINE_load_builtin_engines(), so some implementations get used
- automatically instead of needing explicit application support.
- [Steve Henson]
-
- *) Add support for TLS key exporter as described in RFC5705.
- [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
-
- *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
- a few changes are required:
-
- Add SSL_OP_NO_TLSv1_1 flag.
- Add TLSv1_1 methods.
- Update version checking logic to handle version 1.1.
- Add explicit IV handling (ported from DTLS code).
- Add command line options to s_client/s_server.
- [Steve Henson]
-
- Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
-
- *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
- in CMS and PKCS7 code. When RSA decryption fails use a random key for
- content decryption and always return the same error. Note: this attack
- needs on average 2^20 messages so it only affects automated senders. The
- old behaviour can be re-enabled in the CMS code by setting the
- CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
- an MMA defence is not necessary.
- Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
- this issue. (CVE-2012-0884)
- [Steve Henson]
-
- *) Fix CVE-2011-4619: make sure we really are receiving a
- client hello before rejecting multiple SGC restarts. Thanks to
- Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
- [Steve Henson]
-
- Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
-
- *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
- Thanks to Antonio Martin, Enterprise Secure Access Research and
- Development, Cisco Systems, Inc. for discovering this bug and
- preparing a fix. (CVE-2012-0050)
- [Antonio Martin]
-
- Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
-
- *) Nadhem Alfardan and Kenny Paterson have discovered an extension
- of the Vaudenay padding oracle attack on CBC mode encryption
- which enables an efficient plaintext recovery attack against
- the OpenSSL implementation of DTLS. Their attack exploits timing
- differences arising during decryption processing. A research
- paper describing this attack can be found at:
- http://www.isg.rhul.ac.uk/~kp/dtls.pdf
- Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
- Security Group at Royal Holloway, University of London
- (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
- <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
- for preparing the fix. (CVE-2011-4108)
- [Robin Seggelmann, Michael Tuexen]
-
- *) Clear bytes used for block padding of SSL 3.0 records.
- (CVE-2011-4576)
- [Adam Langley (Google)]
-
- *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
- Kadianakis <desnacked@gmail.com> for discovering this issue and
- Adam Langley for preparing the fix. (CVE-2011-4619)
- [Adam Langley (Google)]
-
- *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
- [Andrey Kulikov <amdeich@gmail.com>]
-
- *) Prevent malformed RFC3779 data triggering an assertion failure.
- Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
- and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
- [Rob Austein <sra@hactrn.net>]
-
- *) Improved PRNG seeding for VOS.
- [Paul Green <Paul.Green@stratus.com>]
-
- *) Fix ssl_ciph.c set-up race.
- [Adam Langley (Google)]
-
- *) Fix spurious failures in ecdsatest.c.
- [Emilia Käsper (Google)]
+ Examples:
- *) Fix the BIO_f_buffer() implementation (which was mixing different
- interpretations of the '..._len' fields).
- [Adam Langley (Google)]
+ -DOPENSSL_API_COMPAT=30000 For 3.0
+ -DOPENSSL_API_COMPAT=30200 For 3.2
+
+ To hide declarations that are deprecated up to and including the
+ given API compatibility level, -DOPENSSL_NO_DEPRECATED must be
+ given when building the application as well.
- *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
- BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
- threads won't reuse the same blinding coefficients.
+ *Richard Levitte*
- This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
- lock to call BN_BLINDING_invert_ex, and avoids one use of
- BN_BLINDING_update for each BN_BLINDING structure (previously,
- the last update always remained unused).
- [Emilia Käsper (Google)]
+ * Added the X509_LOOKUP_METHOD called X509_LOOKUP_store, to allow
+ access to certificate and CRL stores via URIs and OSSL_STORE
+ loaders.
- *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
- [Bob Buckholz (Google)]
+ This adds the following functions:
- Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
+ - X509_LOOKUP_store()
+ - X509_STORE_load_file()
+ - X509_STORE_load_path()
+ - X509_STORE_load_store()
+ - SSL_add_store_cert_subjects_to_stack()
+ - SSL_CTX_set_default_verify_store()
+ - SSL_CTX_load_verify_file()
+ - SSL_CTX_load_verify_dir()
+ - SSL_CTX_load_verify_store()
- *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
- by initialising X509_STORE_CTX properly. (CVE-2011-3207)
- [Kaspar Brand <ossl@velox.ch>]
-
- *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
- for multi-threaded use of ECDH. (CVE-2011-3210)
- [Adam Langley (Google)]
-
- *) Fix x509_name_ex_d2i memory leak on bad inputs.
- [Bodo Moeller]
-
- *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
- signature public key algorithm by using OID xref utilities instead.
- Before this you could only use some ECC ciphersuites with SHA1 only.
- [Steve Henson]
-
- *) Add protection against ECDSA timing attacks as mentioned in the paper
- by Billy Bob Brumley and Nicola Tuveri, see:
-
- http://eprint.iacr.org/2011/232.pdf
-
- [Billy Bob Brumley and Nicola Tuveri]
+ Also, the following functions are now deprecated:
- Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
+ - X509_STORE_load_locations() (use X509_STORE_load_file(),
+ X509_STORE_load_path() or X509_STORE_load_store() instead)
+ - SSL_CTX_load_verify_locations() (use SSL_CTX_load_verify_file(),
+ SSL_CTX_load_verify_dir() or SSL_CTX_load_verify_store() instead)
- *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
- [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
-
- *) Fix bug in string printing code: if *any* escaping is enabled we must
- escape the escape character (backslash) or the resulting string is
- ambiguous.
- [Steve Henson]
-
- Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
-
- *) Disable code workaround for ancient and obsolete Netscape browsers
- and servers: an attacker can use it in a ciphersuite downgrade attack.
- Thanks to Martin Rex for discovering this bug. CVE-2010-4180
- [Steve Henson]
-
- *) Fixed J-PAKE implementation error, originally discovered by
- Sebastien Martini, further info and confirmation from Stefan
- Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
- [Ben Laurie]
-
- Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
-
- *) Fix extension code to avoid race conditions which can result in a buffer
- overrun vulnerability: resumed sessions must not be modified as they can
- be shared by multiple threads. CVE-2010-3864
- [Steve Henson]
+ *Richard Levitte*
- *) Fix WIN32 build system to correctly link an ENGINE directory into
- a DLL.
- [Steve Henson]
+ * Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
+ The presence of this system service is determined at run-time.
- Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
+ *Richard Levitte*
- *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
- (CVE-2010-1633)
- [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
+ * Added functionality to create an EVP_PKEY context based on data
+ for methods from providers. This takes an algorithm name and a
+ property query string and simply stores them, with the intent
+ that any operation that uses this context will use those strings
+ to fetch the needed methods implicitly, thereby making the port
+ of application written for pre-3.0 OpenSSL easier.
- Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
+ *Richard Levitte*
- *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
- context. The operation can be customised via the ctrl mechanism in
- case ENGINEs want to include additional functionality.
- [Steve Henson]
+ * The undocumented function NCONF_WIN32() has been deprecated; for
+ conversion details see the HISTORY section of doc/man5/config.pod
- *) Tolerate yet another broken PKCS#8 key format: private key value negative.
- [Steve Henson]
+ *Rich Salz*
- *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
- output hashes compatible with older versions of OpenSSL.
- [Willy Weisz <weisz@vcpc.univie.ac.at>]
+ * Introduced the new functions EVP_DigestSignInit_ex() and
+ EVP_DigestVerifyInit_ex(). The macros EVP_DigestSignUpdate() and
+ EVP_DigestVerifyUpdate() have been converted to functions. See the man
+ pages for further details.
- *) Fix compression algorithm handling: if resuming a session use the
- compression algorithm of the resumed session instead of determining
- it from client hello again. Don't allow server to change algorithm.
- [Steve Henson]
+ *Matt Caswell*
- *) Add load_crls() function to apps tidying load_certs() too. Add option
- to verify utility to allow additional CRLs to be included.
- [Steve Henson]
+ * Over two thousand fixes were made to the documentation, including:
+ adding missing command flags, better style conformance, documentation
+ of internals, etc.
- *) Update OCSP request code to permit adding custom headers to the request:
- some responders need this.
- [Steve Henson]
+ *Rich Salz, Richard Levitte*
- *) The function EVP_PKEY_sign() returns <=0 on error: check return code
- correctly.
- [Julia Lawall <julia@diku.dk>]
+ * s390x assembly pack: add hardware-support for P-256, P-384, P-521,
+ X25519, X448, Ed25519 and Ed448.
- *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
- needlessly dereferenced structures, used obsolete functions and
- didn't handle all updated verify codes correctly.
- [Steve Henson]
+ *Patrick Steuer*
- *) Disable MD2 in the default configuration.
- [Steve Henson]
+ * Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
+ the first value.
- *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
- indicate the initial BIO being pushed or popped. This makes it possible
- to determine whether the BIO is the one explicitly called or as a result
- of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
- it handles reference counts correctly and doesn't zero out the I/O bio
- when it is not being explicitly popped. WARNING: applications which
- included workarounds for the old buggy behaviour will need to be modified
- or they could free up already freed BIOs.
- [Steve Henson]
+ *Jon Spillett*
- *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
- renaming to all platforms (within the 0.9.8 branch, this was
- done conditionally on Netware platforms to avoid a name clash).
- [Guenter <lists@gknw.net>]
+ * Deprecated the public definition of ERR_STATE as well as the function
+ ERR_get_state(). This is done in preparation of making ERR_STATE an
+ opaque type.
- *) Add ECDHE and PSK support to DTLS.
- [Michael Tuexen <tuexen@fh-muenster.de>]
+ *Richard Levitte*
- *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
- be used on C++.
- [Steve Henson]
-
- *) Add "missing" function EVP_MD_flags() (without this the only way to
- retrieve a digest flags is by accessing the structure directly. Update
- EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
- or cipher is registered as in the "from" argument. Print out all
- registered digests in the dgst usage message instead of manually
- attempting to work them out.
- [Steve Henson]
-
- *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
- this allows the use of compression and extensions. Change default cipher
- string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
- by default unless an application cipher string requests it.
- [Steve Henson]
-
- *) Alter match criteria in PKCS12_parse(). It used to try to use local
- key ids to find matching certificates and keys but some PKCS#12 files
- don't follow the (somewhat unwritten) rules and this strategy fails.
- Now just gather all certificates together and the first private key
- then look for the first certificate that matches the key.
- [Steve Henson]
-
- *) Support use of registered digest and cipher names for dgst and cipher
- commands instead of having to add each one as a special case. So now
- you can do:
-
- openssl sha256 foo
-
- as well as:
+ * Added ERR functionality to give callers access to the stored function
+ names that have replaced the older function code based functions.
- openssl dgst -sha256 foo
+ New functions are ERR_get_error_func(), ERR_peek_error_func(),
+ ERR_peek_last_error_func(), ERR_get_error_data(), ERR_peek_error_data(),
+ ERR_peek_last_error_data(), ERR_get_error_all(), ERR_peek_error_all()
+ and ERR_peek_last_error_all().
- and this works for ENGINE based algorithms too.
+ These functions have become deprecated: ERR_get_error_line_data(),
+ ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
+ ERR_func_error_string().
- [Steve Henson]
+ *Richard Levitte*
- *) Update Gost ENGINE to support parameter files.
- [Victor B. Wagner <vitus@cryptocom.ru>]
+ * Extended testing to be verbose for failing tests only. The make variables
+ VERBOSE_FAILURE or VF can be used to enable this:
- *) Support GeneralizedTime in ca utility.
- [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
-
- *) Enhance the hash format used for certificate directory links. The new
- form uses the canonical encoding (meaning equivalent names will work
- even if they aren't identical) and uses SHA1 instead of MD5. This form
- is incompatible with the older format and as a result c_rehash should
- be used to rebuild symbolic links.
- [Steve Henson]
-
- *) Make PKCS#8 the default write format for private keys, replacing the
- traditional format. This form is standardised, more secure and doesn't
- include an implicit MD5 dependency.
- [Steve Henson]
-
- *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
- committed to OpenSSL should pass this lot as a minimum.
- [Steve Henson]
-
- *) Add session ticket override functionality for use by EAP-FAST.
- [Jouni Malinen <j@w1.fi>]
-
- *) Modify HMAC functions to return a value. Since these can be implemented
- in an ENGINE errors can occur.
- [Steve Henson]
-
- *) Type-checked OBJ_bsearch_ex.
- [Ben Laurie]
-
- *) Type-checked OBJ_bsearch. Also some constification necessitated
- by type-checking. Still to come: TXT_DB, bsearch(?),
- OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
- CONF_VALUE.
- [Ben Laurie]
-
- *) New function OPENSSL_gmtime_adj() to add a specific number of days and
- seconds to a tm structure directly, instead of going through OS
- specific date routines. This avoids any issues with OS routines such
- as the year 2038 bug. New *_adj() functions for ASN1 time structures
- and X509_time_adj_ex() to cover the extended range. The existing
- X509_time_adj() is still usable and will no longer have any date issues.
- [Steve Henson]
-
- *) Delta CRL support. New use deltas option which will attempt to locate
- and search any appropriate delta CRLs available.
-
- This work was sponsored by Google.
- [Steve Henson]
-
- *) Support for CRLs partitioned by reason code. Reorganise CRL processing
- code and add additional score elements. Validate alternate CRL paths
- as part of the CRL checking and indicate a new error "CRL path validation
- error" in this case. Applications wanting additional details can use
- the verify callback and check the new "parent" field. If this is not
- NULL CRL path validation is taking place. Existing applications won't
- see this because it requires extended CRL support which is off by
- default.
-
- This work was sponsored by Google.
- [Steve Henson]
-
- *) Support for freshest CRL extension.
-
- This work was sponsored by Google.
- [Steve Henson]
-
- *) Initial indirect CRL support. Currently only supported in the CRLs
- passed directly and not via lookup. Process certificate issuer
- CRL entry extension and lookup CRL entries by bother issuer name
- and serial number. Check and process CRL issuer entry in IDP extension.
-
- This work was sponsored by Google.
- [Steve Henson]
-
- *) Add support for distinct certificate and CRL paths. The CRL issuer
- certificate is validated separately in this case. Only enabled if
- an extended CRL support flag is set: this flag will enable additional
- CRL functionality in future.
-
- This work was sponsored by Google.
- [Steve Henson]
-
- *) Add support for policy mappings extension.
-
- This work was sponsored by Google.
- [Steve Henson]
-
- *) Fixes to pathlength constraint, self issued certificate handling,
- policy processing to align with RFC3280 and PKITS tests.
-
- This work was sponsored by Google.
- [Steve Henson]
-
- *) Support for name constraints certificate extension. DN, email, DNS
- and URI types are currently supported.
-
- This work was sponsored by Google.
- [Steve Henson]
-
- *) To cater for systems that provide a pointer-based thread ID rather
- than numeric, deprecate the current numeric thread ID mechanism and
- replace it with a structure and associated callback type. This
- mechanism allows a numeric "hash" to be extracted from a thread ID in
- either case, and on platforms where pointers are larger than 'long',
- mixing is done to help ensure the numeric 'hash' is usable even if it
- can't be guaranteed unique. The default mechanism is to use "&errno"
- as a pointer-based thread ID to distinguish between threads.
-
- Applications that want to provide their own thread IDs should now use
- CRYPTO_THREADID_set_callback() to register a callback that will call
- either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
-
- Note that ERR_remove_state() is now deprecated, because it is tied
- to the assumption that thread IDs are numeric. ERR_remove_state(0)
- to free the current thread's error state should be replaced by
- ERR_remove_thread_state(NULL).
-
- (This new approach replaces the functions CRYPTO_set_idptr_callback(),
- CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
- OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
- application was previously providing a numeric thread callback that
- was inappropriate for distinguishing threads, then uniqueness might
- have been obtained with &errno that happened immediately in the
- intermediate development versions of OpenSSL; this is no longer the
- case, the numeric thread callback will now override the automatic use
- of &errno.)
- [Geoff Thorpe, with help from Bodo Moeller]
-
- *) Initial support for different CRL issuing certificates. This covers a
- simple case where the self issued certificates in the chain exist and
- the real CRL issuer is higher in the existing chain.
-
- This work was sponsored by Google.
- [Steve Henson]
-
- *) Removed effectively defunct crypto/store from the build.
- [Ben Laurie]
-
- *) Revamp of STACK to provide stronger type-checking. Still to come:
- TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
- ASN1_STRING, CONF_VALUE.
- [Ben Laurie]
-
- *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
- RAM on SSL connections. This option can save about 34k per idle SSL.
- [Nick Mathewson]
-
- *) Revamp of LHASH to provide stronger type-checking. Still to come:
- STACK, TXT_DB, bsearch, qsort.
- [Ben Laurie]
-
- *) Initial support for Cryptographic Message Syntax (aka CMS) based
- on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
- support for data, signedData, compressedData, digestedData and
- encryptedData, envelopedData types included. Scripts to check against
- RFC4134 examples draft and interop and consistency checks of many
- content types and variants.
- [Steve Henson]
-
- *) Add options to enc utility to support use of zlib compression BIO.
- [Steve Henson]
-
- *) Extend mk1mf to support importing of options and assembly language
- files from Configure script, currently only included in VC-WIN32.
- The assembly language rules can now optionally generate the source
- files from the associated perl scripts.
- [Steve Henson]
-
- *) Implement remaining functionality needed to support GOST ciphersuites.
- Interop testing has been performed using CryptoPro implementations.
- [Victor B. Wagner <vitus@cryptocom.ru>]
-
- *) s390x assembler pack.
- [Andy Polyakov]
-
- *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
- "family."
- [Andy Polyakov]
-
- *) Implement Opaque PRF Input TLS extension as specified in
- draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
- official specification yet and no extension type assignment by
- IANA exists, this extension (for now) will have to be explicitly
- enabled when building OpenSSL by providing the extension number
- to use. For example, specify an option
-
- -DTLSEXT_TYPE_opaque_prf_input=0x9527
-
- to the "config" or "Configure" script to enable the extension,
- assuming extension number 0x9527 (which is a completely arbitrary
- and unofficial assignment based on the MD5 hash of the Internet
- Draft). Note that by doing so, you potentially lose
- interoperability with other TLS implementations since these might
- be using the same extension number for other purposes.
-
- SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
- opaque PRF input value to use in the handshake. This will create
- an internal copy of the length-'len' string at 'src', and will
- return non-zero for success.
-
- To get more control and flexibility, provide a callback function
- by using
-
- SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
- SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
-
- where
-
- int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
- void *arg;
-
- Callback function 'cb' will be called in handshakes, and is
- expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
- Argument 'arg' is for application purposes (the value as given to
- SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
- be provided to the callback function). The callback function
- has to return non-zero to report success: usually 1 to use opaque
- PRF input just if possible, or 2 to enforce use of the opaque PRF
- input. In the latter case, the library will abort the handshake
- if opaque PRF input is not successfully negotiated.
-
- Arguments 'peerinput' and 'len' given to the callback function
- will always be NULL and 0 in the case of a client. A server will
- see the client's opaque PRF input through these variables if
- available (NULL and 0 otherwise). Note that if the server
- provides an opaque PRF input, the length must be the same as the
- length of the client's opaque PRF input.
-
- Note that the callback function will only be called when creating
- a new session (session resumption can resume whatever was
- previously negotiated), and will not be called in SSL 2.0
- handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
- SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
- for applications that need to enforce opaque PRF input.
-
- [Bodo Moeller]
-
- *) Update ssl code to support digests other than SHA1+MD5 for handshake
- MAC.
-
- [Victor B. Wagner <vitus@cryptocom.ru>]
-
- *) Add RFC4507 support to OpenSSL. This includes the corrections in
- RFC4507bis. The encrypted ticket format is an encrypted encoded
- SSL_SESSION structure, that way new session features are automatically
- supported.
-
- If a client application caches session in an SSL_SESSION structure
- support is transparent because tickets are now stored in the encoded
- SSL_SESSION.
-
- The SSL_CTX structure automatically generates keys for ticket
- protection in servers so again support should be possible
- with no application modification.
-
- If a client or server wishes to disable RFC4507 support then the option
- SSL_OP_NO_TICKET can be set.
-
- Add a TLS extension debugging callback to allow the contents of any client
- or server extensions to be examined.
-
- This work was sponsored by Google.
- [Steve Henson]
-
- *) Final changes to avoid use of pointer pointer casts in OpenSSL.
- OpenSSL should now compile cleanly on gcc 4.2
- [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
-
- *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
- support including streaming MAC support: this is required for GOST
- ciphersuite support.
- [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
-
- *) Add option -stream to use PKCS#7 streaming in smime utility. New
- function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
- to output in BER and PEM format.
- [Steve Henson]
-
- *) Experimental support for use of HMAC via EVP_PKEY interface. This
- allows HMAC to be handled via the EVP_DigestSign*() interface. The
- EVP_PKEY "key" in this case is the HMAC key, potentially allowing
- ENGINE support for HMAC keys which are unextractable. New -mac and
- -macopt options to dgst utility.
- [Steve Henson]
-
- *) New option -sigopt to dgst utility. Update dgst to use
- EVP_Digest{Sign,Verify}*. These two changes make it possible to use
- alternative signing parameters such as X9.31 or PSS in the dgst
- utility.
- [Steve Henson]
-
- *) Change ssl_cipher_apply_rule(), the internal function that does
- the work each time a ciphersuite string requests enabling
- ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
- removing ("!foo+bar") a class of ciphersuites: Now it maintains
- the order of disabled ciphersuites such that those ciphersuites
- that most recently went from enabled to disabled not only stay
- in order with respect to each other, but also have higher priority
- than other disabled ciphersuites the next time ciphersuites are
- enabled again.
-
- This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
- the same ciphersuites as with "HIGH" alone, but in a specific
- order where the PSK ciphersuites come first (since they are the
- most recently disabled ciphersuites when "HIGH" is parsed).
-
- Also, change ssl_create_cipher_list() (using this new
- functionality) such that between otherwise identical
- ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
- the default order.
- [Bodo Moeller]
-
- *) Change ssl_create_cipher_list() so that it automatically
- arranges the ciphersuites in reasonable order before starting
- to process the rule string. Thus, the definition for "DEFAULT"
- (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
- remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
- This makes it much easier to arrive at a reasonable default order
- in applications for which anonymous ciphers are OK (meaning
- that you can't actually use DEFAULT).
- [Bodo Moeller; suggested by Victor Duchovni]
-
- *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
- processing) into multiple integers instead of setting
- "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
- "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
- (These masks as well as the individual bit definitions are hidden
- away into the non-exported interface ssl/ssl_locl.h, so this
- change to the definition of the SSL_CIPHER structure shouldn't
- affect applications.) This give us more bits for each of these
- categories, so there is no longer a need to coagulate AES128 and
- AES256 into a single algorithm bit, and to coagulate Camellia128
- and Camellia256 into a single algorithm bit, which has led to all
- kinds of kludges.
-
- Thus, among other things, the kludge introduced in 0.9.7m and
- 0.9.8e for masking out AES256 independently of AES128 or masking
- out Camellia256 independently of AES256 is not needed here in 0.9.9.
-
- With the change, we also introduce new ciphersuite aliases that
- so far were missing: "AES128", "AES256", "CAMELLIA128", and
- "CAMELLIA256".
- [Bodo Moeller]
-
- *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
- Use the leftmost N bytes of the signature input if the input is
- larger than the prime q (with N being the size in bytes of q).
- [Nils Larsch]
-
- *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
- it yet and it is largely untested.
- [Steve Henson]
-
- *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
- [Nils Larsch]
-
- *) Initial incomplete changes to avoid need for function casts in OpenSSL
- some compilers (gcc 4.2 and later) reject their use. Safestack is
- reimplemented. Update ASN1 to avoid use of legacy functions.
- [Steve Henson]
-
- *) Win32/64 targets are linked with Winsock2.
- [Andy Polyakov]
-
- *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
- to external functions. This can be used to increase CRL handling
- efficiency especially when CRLs are very large by (for example) storing
- the CRL revoked certificates in a database.
- [Steve Henson]
-
- *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
- new CRLs added to a directory can be used. New command line option
- -verify_return_error to s_client and s_server. This causes real errors
- to be returned by the verify callback instead of carrying on no matter
- what. This reflects the way a "real world" verify callback would behave.
- [Steve Henson]
-
- *) GOST engine, supporting several GOST algorithms and public key formats.
- Kindly donated by Cryptocom.
- [Cryptocom]
-
- *) Partial support for Issuing Distribution Point CRL extension. CRLs
- partitioned by DP are handled but no indirect CRL or reason partitioning
- (yet). Complete overhaul of CRL handling: now the most suitable CRL is
- selected via a scoring technique which handles IDP and AKID in CRLs.
- [Steve Henson]
-
- *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
- will ultimately be used for all verify operations: this will remove the
- X509_STORE dependency on certificate verification and allow alternative
- lookup methods. X509_STORE based implementations of these two callbacks.
- [Steve Henson]
-
- *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
- Modify get_crl() to find a valid (unexpired) CRL if possible.
- [Steve Henson]
-
- *) New function X509_CRL_match() to check if two CRLs are identical. Normally
- this would be called X509_CRL_cmp() but that name is already used by
- a function that just compares CRL issuer names. Cache several CRL
- extensions in X509_CRL structure and cache CRLDP in X509.
- [Steve Henson]
-
- *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
- this maps equivalent X509_NAME structures into a consistent structure.
- Name comparison can then be performed rapidly using memcmp().
- [Steve Henson]
-
- *) Non-blocking OCSP request processing. Add -timeout option to ocsp
- utility.
- [Steve Henson]
-
- *) Allow digests to supply their own micalg string for S/MIME type using
- the ctrl EVP_MD_CTRL_MICALG.
- [Steve Henson]
-
- *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
- EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
- ctrl. It can then customise the structure before and/or after signing
- if necessary.
- [Steve Henson]
-
- *) New function OBJ_add_sigid() to allow application defined signature OIDs
- to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
- to free up any added signature OIDs.
- [Steve Henson]
-
- *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
- EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
- digest and cipher tables. New options added to openssl utility:
- list-message-digest-algorithms and list-cipher-algorithms.
- [Steve Henson]
-
- *) Change the array representation of binary polynomials: the list
- of degrees of non-zero coefficients is now terminated with -1.
- Previously it was terminated with 0, which was also part of the
- value; thus, the array representation was not applicable to
- polynomials where t^0 has coefficient zero. This change makes
- the array representation useful in a more general context.
- [Douglas Stebila]
-
- *) Various modifications and fixes to SSL/TLS cipher string
- handling. For ECC, the code now distinguishes between fixed ECDH
- with RSA certificates on the one hand and with ECDSA certificates
- on the other hand, since these are separate ciphersuites. The
- unused code for Fortezza ciphersuites has been removed.
-
- For consistency with EDH, ephemeral ECDH is now called "EECDH"
- (not "ECDHE"). For consistency with the code for DH
- certificates, use of ECDH certificates is now considered ECDH
- authentication, not RSA or ECDSA authentication (the latter is
- merely the CA's signing algorithm and not actively used in the
- protocol).
-
- The temporary ciphersuite alias "ECCdraft" is no longer
- available, and ECC ciphersuites are no longer excluded from "ALL"
- and "DEFAULT". The following aliases now exist for RFC 4492
- ciphersuites, most of these by analogy with the DH case:
-
- kECDHr - ECDH cert, signed with RSA
- kECDHe - ECDH cert, signed with ECDSA
- kECDH - ECDH cert (signed with either RSA or ECDSA)
- kEECDH - ephemeral ECDH
- ECDH - ECDH cert or ephemeral ECDH
-
- aECDH - ECDH cert
- aECDSA - ECDSA cert
- ECDSA - ECDSA cert
-
- AECDH - anonymous ECDH
- EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
-
- [Bodo Moeller]
-
- *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
- Use correct micalg parameters depending on digest(s) in signed message.
- [Steve Henson]
-
- *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
- an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
- [Steve Henson]
-
- *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
- an engine to register a method. Add ENGINE lookups for methods and
- functional reference processing.
- [Steve Henson]
-
- *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
- EVP_{Sign,Verify}* which allow an application to customise the signature
- process.
- [Steve Henson]
-
- *) New -resign option to smime utility. This adds one or more signers
- to an existing PKCS#7 signedData structure. Also -md option to use an
- alternative message digest algorithm for signing.
- [Steve Henson]
-
- *) Tidy up PKCS#7 routines and add new functions to make it easier to
- create PKCS7 structures containing multiple signers. Update smime
- application to support multiple signers.
- [Steve Henson]
-
- *) New -macalg option to pkcs12 utility to allow setting of an alternative
- digest MAC.
- [Steve Henson]
-
- *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
- Reorganize PBE internals to lookup from a static table using NIDs,
- add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
- EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
- PRF which will be automatically used with PBES2.
- [Steve Henson]
-
- *) Replace the algorithm specific calls to generate keys in "req" with the
- new API.
- [Steve Henson]
-
- *) Update PKCS#7 enveloped data routines to use new API. This is now
- supported by any public key method supporting the encrypt operation. A
- ctrl is added to allow the public key algorithm to examine or modify
- the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
- a no op.
- [Steve Henson]
-
- *) Add a ctrl to asn1 method to allow a public key algorithm to express
- a default digest type to use. In most cases this will be SHA1 but some
- algorithms (such as GOST) need to specify an alternative digest. The
- return value indicates how strong the preference is 1 means optional and
- 2 is mandatory (that is it is the only supported type). Modify
- ASN1_item_sign() to accept a NULL digest argument to indicate it should
- use the default md. Update openssl utilities to use the default digest
- type for signing if it is not explicitly indicated.
- [Steve Henson]
-
- *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
- EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
- signing method from the key type. This effectively removes the link
- between digests and public key types.
- [Steve Henson]
-
- *) Add an OID cross reference table and utility functions. Its purpose is to
- translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
- rsaEncryption. This will allow some of the algorithm specific hackery
- needed to use the correct OID to be removed.
- [Steve Henson]
-
- *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
- structures for PKCS7_sign(). They are now set up by the relevant public
- key ASN1 method.
- [Steve Henson]
-
- *) Add provisional EC pkey method with support for ECDSA and ECDH.
- [Steve Henson]
-
- *) Add support for key derivation (agreement) in the API, DH method and
- pkeyutl.
- [Steve Henson]
-
- *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
- public and private key formats. As a side effect these add additional
- command line functionality not previously available: DSA signatures can be
- generated and verified using pkeyutl and DH key support and generation in
- pkey, genpkey.
- [Steve Henson]
-
- *) BeOS support.
- [Oliver Tappe <zooey@hirschkaefer.de>]
-
- *) New make target "install_html_docs" installs HTML renditions of the
- manual pages.
- [Oliver Tappe <zooey@hirschkaefer.de>]
-
- *) New utility "genpkey" this is analogous to "genrsa" etc except it can
- generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
- support key and parameter generation and add initial key generation
- functionality for RSA.
- [Steve Henson]
-
- *) Add functions for main EVP_PKEY_method operations. The undocumented
- functions EVP_PKEY_{encrypt,decrypt} have been renamed to
- EVP_PKEY_{encrypt,decrypt}_old.
- [Steve Henson]
-
- *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
- key API, doesn't do much yet.
- [Steve Henson]
-
- *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
- public key algorithms. New option to openssl utility:
- "list-public-key-algorithms" to print out info.
- [Steve Henson]
-
- *) Implement the Supported Elliptic Curves Extension for
- ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
- [Douglas Stebila]
-
- *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
- EVP_CIPHER structures to avoid later problems in EVP_cleanup().
- [Steve Henson]
-
- *) New utilities pkey and pkeyparam. These are similar to algorithm specific
- utilities such as rsa, dsa, dsaparam etc except they process any key
- type.
- [Steve Henson]
-
- *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
- functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
- EVP_PKEY_print_param() to print public key data from an EVP_PKEY
- structure.
- [Steve Henson]
-
- *) Initial support for pluggable public key ASN1.
- De-spaghettify the public key ASN1 handling. Move public and private
- key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
- algorithm specific handling to a single module within the relevant
- algorithm directory. Add functions to allow (near) opaque processing
- of public and private key structures.
- [Steve Henson]
-
- *) Implement the Supported Point Formats Extension for
- ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
- [Douglas Stebila]
-
- *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
- for the psk identity [hint] and the psk callback functions to the
- SSL_SESSION, SSL and SSL_CTX structure.
-
- New ciphersuites:
- PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
- PSK-AES256-CBC-SHA
-
- New functions:
- SSL_CTX_use_psk_identity_hint
- SSL_get_psk_identity_hint
- SSL_get_psk_identity
- SSL_use_psk_identity_hint
-
- [Mika Kousa and Pasi Eronen of Nokia Corporation]
-
- *) Add RFC 3161 compliant time stamp request creation, response generation
- and response verification functionality.
- [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
-
- *) Add initial support for TLS extensions, specifically for the server_name
- extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
- have new members for a host name. The SSL data structure has an
- additional member SSL_CTX *initial_ctx so that new sessions can be
- stored in that context to allow for session resumption, even after the
- SSL has been switched to a new SSL_CTX in reaction to a client's
- server_name extension.
-
- New functions (subject to change):
-
- SSL_get_servername()
- SSL_get_servername_type()
- SSL_set_SSL_CTX()
-
- New CTRL codes and macros (subject to change):
-
- SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
- - SSL_CTX_set_tlsext_servername_callback()
- SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
- - SSL_CTX_set_tlsext_servername_arg()
- SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
-
- openssl s_client has a new '-servername ...' option.
-
- openssl s_server has new options '-servername_host ...', '-cert2 ...',
- '-key2 ...', '-servername_fatal' (subject to change). This allows
- testing the HostName extension for a specific single host name ('-cert'
- and '-key' remain fallbacks for handshakes without HostName
- negotiation). If the unrecognized_name alert has to be sent, this by
- default is a warning; it becomes fatal with the '-servername_fatal'
- option.
-
- [Peter Sylvester, Remy Allais, Christophe Renou]
-
- *) Whirlpool hash implementation is added.
- [Andy Polyakov]
-
- *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
- bn(64,32). Because of instruction set limitations it doesn't have
- any negative impact on performance. This was done mostly in order
- to make it possible to share assembler modules, such as bn_mul_mont
- implementations, between 32- and 64-bit builds without hassle.
- [Andy Polyakov]
-
- *) Move code previously exiled into file crypto/ec/ec2_smpt.c
- to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
- macro.
- [Bodo Moeller]
-
- *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
- dedicated Montgomery multiplication procedure, is introduced.
- BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
- "64-bit" performance on certain 32-bit targets.
- [Andy Polyakov]
-
- *) New option SSL_OP_NO_COMP to disable use of compression selectively
- in SSL structures. New SSL ctrl to set maximum send fragment size.
- Save memory by setting the I/O buffer sizes dynamically instead of
- using the maximum available value.
- [Steve Henson]
-
- *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
- in addition to the text details.
- [Bodo Moeller]
-
- *) Very, very preliminary EXPERIMENTAL support for printing of general
- ASN1 structures. This currently produces rather ugly output and doesn't
- handle several customised structures at all.
- [Steve Henson]
-
- *) Integrated support for PVK file format and some related formats such
- as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
- these in the 'rsa' and 'dsa' utilities.
- [Steve Henson]
-
- *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
- [Steve Henson]
-
- *) Remove the ancient ASN1_METHOD code. This was only ever used in one
- place for the (very old) "NETSCAPE" format certificates which are now
- handled using new ASN1 code equivalents.
- [Steve Henson]
-
- *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
- pointer and make the SSL_METHOD parameter in SSL_CTX_new,
- SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
- [Nils Larsch]
-
- *) Modify CRL distribution points extension code to print out previously
- unsupported fields. Enhance extension setting code to allow setting of
- all fields.
- [Steve Henson]
-
- *) Add print and set support for Issuing Distribution Point CRL extension.
- [Steve Henson]
-
- *) Change 'Configure' script to enable Camellia by default.
- [NTT]
-
- Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
-
- *) When rejecting SSL/TLS records due to an incorrect version number, never
- update s->server with a new major version number. As of
- - OpenSSL 0.9.8m if 'short' is a 16-bit type,
- - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
- the previous behavior could result in a read attempt at NULL when
- receiving specific incorrect SSL/TLS records once record payload
- protection is active. (CVE-2010-0740)
- [Bodo Moeller, Adam Langley <agl@chromium.org>]
-
- *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
- could be crashed if the relevant tables were not present (e.g. chrooted).
- [Tomas Hoger <thoger@redhat.com>]
-
- Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
-
- *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
- [Martin Olsson, Neel Mehta]
-
- *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
- accommodate for stack sorting, always a write lock!).
- [Bodo Moeller]
-
- *) On some versions of WIN32 Heap32Next is very slow. This can cause
- excessive delays in the RAND_poll(): over a minute. As a workaround
- include a time check in the inner Heap32Next loop too.
- [Steve Henson]
-
- *) The code that handled flushing of data in SSL/TLS originally used the
- BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
- the problem outlined in PR#1949. The fix suggested there however can
- trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
- of Apache). So instead simplify the code to flush unconditionally.
- This should be fine since flushing with no data to flush is a no op.
- [Steve Henson]
-
- *) Handle TLS versions 2.0 and later properly and correctly use the
- highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
- off ancient servers have a habit of sticking around for a while...
- [Steve Henson]
-
- *) Modify compression code so it frees up structures without using the
- ex_data callbacks. This works around a problem where some applications
- call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
- restarting) then use compression (e.g. SSL with compression) later.
- This results in significant per-connection memory leaks and
- has caused some security issues including CVE-2008-1678 and
- CVE-2009-4355.
- [Steve Henson]
-
- *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
- change when encrypting or decrypting.
- [Bodo Moeller]
-
- *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
- connect and renegotiate with servers which do not support RI.
- Until RI is more widely deployed this option is enabled by default.
- [Steve Henson]
-
- *) Add "missing" ssl ctrls to clear options and mode.
- [Steve Henson]
-
- *) If client attempts to renegotiate and doesn't support RI respond with
- a no_renegotiation alert as required by RFC5746. Some renegotiating
- TLS clients will continue a connection gracefully when they receive
- the alert. Unfortunately OpenSSL mishandled this alert and would hang
- waiting for a server hello which it will never receive. Now we treat a
- received no_renegotiation alert as a fatal error. This is because
- applications requesting a renegotiation might well expect it to succeed
- and would have no code in place to handle the server denying it so the
- only safe thing to do is to terminate the connection.
- [Steve Henson]
-
- *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
- peer supports secure renegotiation and 0 otherwise. Print out peer
- renegotiation support in s_client/s_server.
- [Steve Henson]
-
- *) Replace the highly broken and deprecated SPKAC certification method with
- the updated NID creation version. This should correctly handle UTF8.
- [Steve Henson]
-
- *) Implement RFC5746. Re-enable renegotiation but require the extension
- as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
- turns out to be a bad idea. It has been replaced by
- SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
- SSL_CTX_set_options(). This is really not recommended unless you
- know what you are doing.
- [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
-
- *) Fixes to stateless session resumption handling. Use initial_ctx when
- issuing and attempting to decrypt tickets in case it has changed during
- servername handling. Use a non-zero length session ID when attempting
- stateless session resumption: this makes it possible to determine if
- a resumption has occurred immediately after receiving server hello
- (several places in OpenSSL subtly assume this) instead of later in
- the handshake.
- [Steve Henson]
-
- *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
- CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
- fixes for a few places where the return code is not checked
- correctly.
- [Julia Lawall <julia@diku.dk>]
-
- *) Add --strict-warnings option to Configure script to include devteam
- warnings in other configurations.
- [Steve Henson]
-
- *) Add support for --libdir option and LIBDIR variable in makefiles. This
- makes it possible to install openssl libraries in locations which
- have names other than "lib", for example "/usr/lib64" which some
- systems need.
- [Steve Henson, based on patch from Jeremy Utley]
-
- *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
- X690 8.9.12 and can produce some misleading textual output of OIDs.
- [Steve Henson, reported by Dan Kaminsky]
-
- *) Delete MD2 from algorithm tables. This follows the recommendation in
- several standards that it is not used in new applications due to
- several cryptographic weaknesses. For binary compatibility reasons
- the MD2 API is still compiled in by default.
- [Steve Henson]
-
- *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
- and restored.
- [Steve Henson]
-
- *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
- OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
- clash.
- [Guenter <lists@gknw.net>]
-
- *) Fix the server certificate chain building code to use X509_verify_cert(),
- it used to have an ad-hoc builder which was unable to cope with anything
- other than a simple chain.
- [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
-
- *) Don't check self signed certificate signatures in X509_verify_cert()
- by default (a flag can override this): it just wastes time without
- adding any security. As a useful side effect self signed root CAs
- with non-FIPS digests are now usable in FIPS mode.
- [Steve Henson]
-
- *) In dtls1_process_out_of_seq_message() the check if the current message
- is already buffered was missing. For every new message was memory
- allocated, allowing an attacker to perform an denial of service attack
- with sending out of seq handshake messages until there is no memory
- left. Additionally every future message was buffered, even if the
- sequence number made no sense and would be part of another handshake.
- So only messages with sequence numbers less than 10 in advance will be
- buffered. (CVE-2009-1378)
- [Robin Seggelmann, discovered by Daniel Mentz]
-
- *) Records are buffered if they arrive with a future epoch to be
- processed after finishing the corresponding handshake. There is
- currently no limitation to this buffer allowing an attacker to perform
- a DOS attack with sending records with future epochs until there is no
- memory left. This patch adds the pqueue_size() function to determine
- the size of a buffer and limits the record buffer to 100 entries.
- (CVE-2009-1377)
- [Robin Seggelmann, discovered by Daniel Mentz]
-
- *) Keep a copy of frag->msg_header.frag_len so it can be used after the
- parent structure is freed. (CVE-2009-1379)
- [Daniel Mentz]
-
- *) Handle non-blocking I/O properly in SSL_shutdown() call.
- [Darryl Miles <darryl-mailinglists@netbauds.net>]
-
- *) Add 2.5.4.* OIDs
- [Ilya O. <vrghost@gmail.com>]
-
- Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
-
- *) Disable renegotiation completely - this fixes a severe security
- problem (CVE-2009-3555) at the cost of breaking all
- renegotiation. Renegotiation can be re-enabled by setting
- SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
- run-time. This is really not recommended unless you know what
- you're doing.
- [Ben Laurie]
-
- Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
-
- *) Don't set val to NULL when freeing up structures, it is freed up by
- underlying code. If sizeof(void *) > sizeof(long) this can result in
- zeroing past the valid field. (CVE-2009-0789)
- [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
-
- *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
- checked correctly. This would allow some invalid signed attributes to
- appear to verify correctly. (CVE-2009-0591)
- [Ivan Nestlerode <inestlerode@us.ibm.com>]
-
- *) Reject UniversalString and BMPString types with invalid lengths. This
- prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
- a legal length. (CVE-2009-0590)
- [Steve Henson]
-
- *) Set S/MIME signing as the default purpose rather than setting it
- unconditionally. This allows applications to override it at the store
- level.
- [Steve Henson]
-
- *) Permit restricted recursion of ASN1 strings. This is needed in practice
- to handle some structures.
- [Steve Henson]
-
- *) Improve efficiency of mem_gets: don't search whole buffer each time
- for a '\n'
- [Jeremy Shapiro <jnshapir@us.ibm.com>]
+ $ make VF=1 test # Unix
+ $ mms /macro=(VF=1) test ! OpenVMS
+ $ nmake VF=1 test # Windows
- *) New -hex option for openssl rand.
- [Matthieu Herrb]
- *) Print out UTF8String and NumericString when parsing ASN1.
- [Steve Henson]
+ *Richard Levitte*
- *) Support NumericString type for name components.
- [Steve Henson]
+ * For built-in EC curves, ensure an EC_GROUP built from the curve name is
+ used even when parsing explicit parameters, when loading a serialized key
+ or calling `EC_GROUP_new_from_ecpkparameters()`/
+ `EC_GROUP_new_from_ecparameters()`.
+ This prevents bypass of security hardening and performance gains,
+ especially for curves with specialized EC_METHODs.
+ By default, if a key encoded with explicit parameters is loaded and later
+ serialized, the output is still encoded with explicit parameters, even if
+ internally a "named" EC_GROUP is used for computation.
- *) Allow CC in the environment to override the automatically chosen
- compiler. Note that nothing is done to ensure flags work with the
- chosen compiler.
- [Ben Laurie]
+ *Nicola Tuveri*
- Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
+ * Compute ECC cofactors if not provided during EC_GROUP construction. Before
+ this change, EC_GROUP_set_generator would accept order and/or cofactor as
+ NULL. After this change, only the cofactor parameter can be NULL. It also
+ does some minimal sanity checks on the passed order.
+ (CVE-2019-1547)
- *) Properly check EVP_VerifyFinal() and similar return values
- (CVE-2008-5077).
- [Ben Laurie, Bodo Moeller, Google Security Team]
+ *Billy Bob Brumley*
- *) Enable TLS extensions by default.
- [Ben Laurie]
+ * Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
+ An attack is simple, if the first CMS_recipientInfo is valid but the
+ second CMS_recipientInfo is chosen ciphertext. If the second
+ recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
+ encryption key will be replaced by garbage, and the message cannot be
+ decoded, but if the RSA decryption fails, the correct encryption key is
+ used and the recipient will not notice the attack.
+ As a work around for this potential attack the length of the decrypted
+ key must be equal to the cipher default key length, in case the
+ certifiate is not given and all recipientInfo are tried out.
+ The old behaviour can be re-enabled in the CMS code by setting the
+ CMS_DEBUG_DECRYPT flag.
- *) Allow the CHIL engine to be loaded, whether the application is
- multithreaded or not. (This does not release the developer from the
- obligation to set up the dynamic locking callbacks.)
- [Sander Temme <sander@temme.net>]
+ *Bernd Edlinger*
- *) Use correct exit code if there is an error in dgst command.
- [Steve Henson; problem pointed out by Roland Dirlewanger]
+ * Early start up entropy quality from the DEVRANDOM seed source has been
+ improved for older Linux systems. The RAND subsystem will wait for
+ /dev/random to be producing output before seeding from /dev/urandom.
+ The seeded state is stored for future library initialisations using
+ a system global shared memory segment. The shared memory identifier
+ can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
+ the desired value. The default identifier is 114.
- *) Tweak Configure so that you need to say "experimental-jpake" to enable
- JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
- [Bodo Moeller]
+ *Paul Dale*
- *) Add experimental JPAKE support, including demo authentication in
- s_client and s_server.
- [Ben Laurie]
+ * Revised BN_generate_prime_ex to not avoid factors 2..17863 in p-1
+ when primes for RSA keys are computed.
+ Since we previously always generated primes == 2 (mod 3) for RSA keys,
+ the 2-prime and 3-prime RSA modules were easy to distinguish, since
+ N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
+ 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
+ This avoids possible fingerprinting of newly generated RSA modules.
- *) Set the comparison function in v3_addr_canonize().
- [Rob Austein <sra@hactrn.net>]
+ *Bernd Edlinger*
- *) Add support for XMPP STARTTLS in s_client.
- [Philip Paeps <philip@freebsd.org>]
+ * Correct the extended master secret constant on EBCDIC systems. Without this
+ fix TLS connections between an EBCDIC system and a non-EBCDIC system that
+ negotiate EMS will fail. Unfortunately this also means that TLS connections
+ between EBCDIC systems with this fix, and EBCDIC systems without this
+ fix will fail if they negotiate EMS.
- *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
- to ensure that even with this option, only ciphersuites in the
- server's preference list will be accepted. (Note that the option
- applies only when resuming a session, so the earlier behavior was
- just about the algorithm choice for symmetric cryptography.)
- [Bodo Moeller]
+ *Matt Caswell*
- Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
+ * Changed the library initialisation so that the config file is now loaded
+ by default. This was already the case for libssl. It now occurs for both
+ libcrypto and libssl. Use the OPENSSL_INIT_NO_LOAD_CONFIG option to
+ OPENSSL_init_crypto() to suppress automatic loading of a config file.
- *) Fix NULL pointer dereference if a DTLS server received
- ChangeCipherSpec as first record (CVE-2009-1386).
- [PR #1679]
+ *Matt Caswell*
- *) Fix a state transition in s3_srvr.c and d1_srvr.c
- (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
- [Nagendra Modadugu]
+ * Introduced new error raising macros, ERR_raise() and ERR_raise_data(),
+ where the former acts as a replacement for ERR_put_error(), and the
+ latter replaces the combination ERR_put_error()+ERR_add_error_data().
+ ERR_raise_data() adds more flexibility by taking a format string and
+ an arbitrary number of arguments following it, to be processed with
+ BIO_snprintf().
- *) The fix in 0.9.8c that supposedly got rid of unsafe
- double-checked locking was incomplete for RSA blinding,
- addressing just one layer of what turns out to have been
- doubly unsafe triple-checked locking.
+ *Richard Levitte*
- So now fix this for real by retiring the MONT_HELPER macro
- in crypto/rsa/rsa_eay.c.
+ * Introduced a new function, OSSL_PROVIDER_available(), which can be used
+ to check if a named provider is loaded and available. When called, it
+ will also activate all fallback providers if such are still present.
- [Bodo Moeller; problem pointed out by Marius Schilder]
+ *Richard Levitte*
- *) Various precautionary measures:
+ * Enforce a minimum DH modulus size of 512 bits.
- - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
+ *Bernd Edlinger*
- - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
- (NB: This would require knowledge of the secret session ticket key
- to exploit, in which case you'd be SOL either way.)
+ * Changed DH parameters to generate the order q subgroup instead of 2q.
+ Previously generated DH parameters are still accepted by DH_check
+ but DH_generate_key works around that by clearing bit 0 of the
+ private key for those. This avoids leaking bit 0 of the private key.
- - Change bn_nist.c so that it will properly handle input BIGNUMs
- outside the expected range.
+ *Bernd Edlinger*
- - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
- builds.
+ * Significantly reduce secure memory usage by the randomness pools.
- [Neel Mehta, Bodo Moeller]
+ *Paul Dale*
- *) Allow engines to be "soft loaded" - i.e. optionally don't die if
- the load fails. Useful for distros.
- [Ben Laurie and the FreeBSD team]
+ * {CRYPTO,OPENSSL}_mem_debug_{push,pop} are now no-ops and have been
+ deprecated.
- *) Add support for Local Machine Keyset attribute in PKCS#12 files.
- [Steve Henson]
+ *Rich Salz*
- *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
- [Huang Ying]
+ * A new type, EVP_KEYEXCH, has been introduced to represent key exchange
+ algorithms. An implementation of a key exchange algorithm can be obtained
+ by using the function EVP_KEYEXCH_fetch(). An EVP_KEYEXCH algorithm can be
+ used in a call to EVP_PKEY_derive_init_ex() which works in a similar way to
+ the older EVP_PKEY_derive_init() function. See the man pages for the new
+ functions for further details.
- *) Expand ENGINE to support engine supplied SSL client certificate functions.
+ *Matt Caswell*
- This work was sponsored by Logica.
- [Steve Henson]
+ * The EVP_PKEY_CTX_set_dh_pad() macro has now been converted to a function.
- *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
- keystores. Support for SSL/TLS client authentication too.
- Not compiled unless enable-capieng specified to Configure.
+ *Matt Caswell*
- This work was sponsored by Logica.
- [Steve Henson]
+ * Removed the function names from error messages and deprecated the
+ xxx_F_xxx define's.
- *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
- ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
- attribute creation routines such as certificate requests and PKCS#12
- files.
- [Steve Henson]
+ * Removed NextStep support and the macro OPENSSL_UNISTD
- Changes between 0.9.8g and 0.9.8h [28 May 2008]
+ *Rich Salz*
- *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
- handshake which could lead to a client crash as found using the
- Codenomicon TLS test suite (CVE-2008-1672)
- [Steve Henson, Mark Cox]
+ * Removed DES_check_key. Also removed OPENSSL_IMPLEMENT_GLOBAL,
+ OPENSSL_GLOBAL_REF, OPENSSL_DECLARE_GLOBAL.
+ Also removed "export var as function" capability; we do not export
+ variables, only functions.
- *) Fix double free in TLS server name extensions which could lead to
- a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
- [Joe Orton]
+ *Rich Salz*
- *) Clear error queue in SSL_CTX_use_certificate_chain_file()
+ * RC5_32_set_key has been changed to return an int type, with 0 indicating
+ an error and 1 indicating success. In previous versions of OpenSSL this
+ was a void type. If a key was set longer than the maximum possible this
+ would crash.
- Clear the error queue to ensure that error entries left from
- older function calls do not interfere with the correct operation.
- [Lutz Jaenicke, Erik de Castro Lopo]
+ *Matt Caswell*
- *) Remove root CA certificates of commercial CAs:
+ * Support SM2 signing and verification schemes with X509 certificate.
- The OpenSSL project does not recommend any specific CA and does not
- have any policy with respect to including or excluding any CA.
- Therefore it does not make any sense to ship an arbitrary selection
- of root CA certificates with the OpenSSL software.
- [Lutz Jaenicke]
-
- *) RSA OAEP patches to fix two separate invalid memory reads.
- The first one involves inputs when 'lzero' is greater than
- 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
- before the beginning of from). The second one involves inputs where
- the 'db' section contains nothing but zeroes (there is a one-byte
- invalid read after the end of 'db').
- [Ivan Nestlerode <inestlerode@us.ibm.com>]
-
- *) Partial backport from 0.9.9-dev:
-
- Introduce bn_mul_mont (dedicated Montgomery multiplication
- procedure) as a candidate for BIGNUM assembler implementation.
- While 0.9.9-dev uses assembler for various architectures, only
- x86_64 is available by default here in the 0.9.8 branch, and
- 32-bit x86 is available through a compile-time setting.
-
- To try the 32-bit x86 assembler implementation, use Configure
- option "enable-montasm" (which exists only for this backport).
-
- As "enable-montasm" for 32-bit x86 disclaims code stability
- anyway, in this constellation we activate additional code
- backported from 0.9.9-dev for further performance improvements,
- namely BN_from_montgomery_word. (To enable this otherwise,
- e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
-
- [Andy Polyakov (backport partially by Bodo Moeller)]
-
- *) Add TLS session ticket callback. This allows an application to set
- TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
- values. This is useful for key rollover for example where several key
- sets may exist with different names.
- [Steve Henson]
-
- *) Reverse ENGINE-internal logic for caching default ENGINE handles.
- This was broken until now in 0.9.8 releases, such that the only way
- a registered ENGINE could be used (assuming it initialises
- successfully on the host) was to explicitly set it as the default
- for the relevant algorithms. This is in contradiction with 0.9.7
- behaviour and the documentation. With this fix, when an ENGINE is
- registered into a given algorithm's table of implementations, the
- 'uptodate' flag is reset so that auto-discovery will be used next
- time a new context for that algorithm attempts to select an
- implementation.
- [Ian Lister (tweaked by Geoff Thorpe)]
-
- *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
- implementation in the following ways:
-
- Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
- hard coded.
-
- Lack of BER streaming support means one pass streaming processing is
- only supported if data is detached: setting the streaming flag is
- ignored for embedded content.
-
- CMS support is disabled by default and must be explicitly enabled
- with the enable-cms configuration option.
- [Steve Henson]
-
- *) Update the GMP engine glue to do direct copies between BIGNUM and
- mpz_t when openssl and GMP use the same limb size. Otherwise the
- existing "conversion via a text string export" trick is still used.
- [Paul Sheer <paulsheer@gmail.com>]
-
- *) Zlib compression BIO. This is a filter BIO which compressed and
- uncompresses any data passed through it.
- [Steve Henson]
-
- *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
- RFC3394 compatible AES key wrapping.
- [Steve Henson]
-
- *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
- sets string data without copying. X509_ALGOR_set0() and
- X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
- data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
- from an X509_ATTRIBUTE structure optionally checking it occurs only
- once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
- data.
- [Steve Henson]
-
- *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
- to get the expected BN_FLG_CONSTTIME behavior.
- [Bodo Moeller (Google)]
-
- *) Netware support:
-
- - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
- - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
- - added some more tests to do_tests.pl
- - fixed RunningProcess usage so that it works with newer LIBC NDKs too
- - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
- - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
- netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
- - various changes to netware.pl to enable gcc-cross builds on Win32
- platform
- - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
- - various changes to fix missing prototype warnings
- - fixed x86nasm.pl to create correct asm files for NASM COFF output
- - added AES, WHIRLPOOL and CPUID assembler code to build files
- - added missing AES assembler make rules to mk1mf.pl
- - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
- [Guenter Knauf <eflash@gmx.net>]
-
- *) Implement certificate status request TLS extension defined in RFC3546.
- A client can set the appropriate parameters and receive the encoded
- OCSP response via a callback. A server can query the supplied parameters
- and set the encoded OCSP response in the callback. Add simplified examples
- to s_client and s_server.
- [Steve Henson]
-
- Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
-
- *) Fix various bugs:
- + Binary incompatibility of ssl_ctx_st structure
- + DTLS interoperation with non-compliant servers
- + Don't call get_session_cb() without proposed session
- + Fix ia64 assembler code
- [Andy Polyakov, Steve Henson]
-
- Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
-
- *) DTLS Handshake overhaul. There were longstanding issues with
- OpenSSL DTLS implementation, which were making it impossible for
- RFC 4347 compliant client to communicate with OpenSSL server.
- Unfortunately just fixing these incompatibilities would "cut off"
- pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
- server keeps tolerating non RFC compliant syntax. The opposite is
- not true, 0.9.8f client can not communicate with earlier server.
- This update even addresses CVE-2007-4995.
- [Andy Polyakov]
-
- *) Changes to avoid need for function casts in OpenSSL: some compilers
- (gcc 4.2 and later) reject their use.
- [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
- Steve Henson]
-
- *) Add RFC4507 support to OpenSSL. This includes the corrections in
- RFC4507bis. The encrypted ticket format is an encrypted encoded
- SSL_SESSION structure, that way new session features are automatically
- supported.
-
- If a client application caches session in an SSL_SESSION structure
- support is transparent because tickets are now stored in the encoded
- SSL_SESSION.
-
- The SSL_CTX structure automatically generates keys for ticket
- protection in servers so again support should be possible
- with no application modification.
-
- If a client or server wishes to disable RFC4507 support then the option
- SSL_OP_NO_TICKET can be set.
-
- Add a TLS extension debugging callback to allow the contents of any client
- or server extensions to be examined.
-
- This work was sponsored by Google.
- [Steve Henson]
-
- *) Add initial support for TLS extensions, specifically for the server_name
- extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
- have new members for a host name. The SSL data structure has an
- additional member SSL_CTX *initial_ctx so that new sessions can be
- stored in that context to allow for session resumption, even after the
- SSL has been switched to a new SSL_CTX in reaction to a client's
- server_name extension.
-
- New functions (subject to change):
-
- SSL_get_servername()
- SSL_get_servername_type()
- SSL_set_SSL_CTX()
-
- New CTRL codes and macros (subject to change):
-
- SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
- - SSL_CTX_set_tlsext_servername_callback()
- SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
- - SSL_CTX_set_tlsext_servername_arg()
- SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
-
- openssl s_client has a new '-servername ...' option.
-
- openssl s_server has new options '-servername_host ...', '-cert2 ...',
- '-key2 ...', '-servername_fatal' (subject to change). This allows
- testing the HostName extension for a specific single host name ('-cert'
- and '-key' remain fallbacks for handshakes without HostName
- negotiation). If the unrecognized_name alert has to be sent, this by
- default is a warning; it becomes fatal with the '-servername_fatal'
- option.
-
- [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
-
- *) Add AES and SSE2 assembly language support to VC++ build.
- [Steve Henson]
-
- *) Mitigate attack on final subtraction in Montgomery reduction.
- [Andy Polyakov]
-
- *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
- (which previously caused an internal error).
- [Bodo Moeller]
-
- *) Squeeze another 10% out of IGE mode when in != out.
- [Ben Laurie]
-
- *) AES IGE mode speedup.
- [Dean Gaudet (Google)]
-
- *) Add the Korean symmetric 128-bit cipher SEED (see
- http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
- add SEED ciphersuites from RFC 4162:
-
- TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
- TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
- TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
- TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
-
- To minimize changes between patchlevels in the OpenSSL 0.9.8
- series, SEED remains excluded from compilation unless OpenSSL
- is configured with 'enable-seed'.
- [KISA, Bodo Moeller]
-
- *) Mitigate branch prediction attacks, which can be practical if a
- single processor is shared, allowing a spy process to extract
- information. For detailed background information, see
- http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
- J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
- and Necessary Software Countermeasures"). The core of the change
- are new versions BN_div_no_branch() and
- BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
- respectively, which are slower, but avoid the security-relevant
- conditional branches. These are automatically called by BN_div()
- and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
- of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
- remove a conditional branch.
-
- BN_FLG_CONSTTIME is the new name for the previous
- BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
- modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
- in the exponent causes BN_mod_exp_mont() to use the alternative
- implementation in BN_mod_exp_mont_consttime().) The old name
- remains as a deprecated alias.
-
- Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
- RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
- constant-time implementations for more than just exponentiation.
- Here too the old name is kept as a deprecated alias.
-
- BN_BLINDING_new() will now use BN_dup() for the modulus so that
- the BN_BLINDING structure gets an independent copy of the
- modulus. This means that the previous "BIGNUM *m" argument to
- BN_BLINDING_new() and to BN_BLINDING_create_param() now
- essentially becomes "const BIGNUM *m", although we can't actually
- change this in the header file before 0.9.9. It allows
- RSA_setup_blinding() to use BN_with_flags() on the modulus to
- enable BN_FLG_CONSTTIME.
-
- [Matthew D Wood (Intel Corp)]
-
- *) In the SSL/TLS server implementation, be strict about session ID
- context matching (which matters if an application uses a single
- external cache for different purposes). Previously,
- out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
- set. This did ensure strict client verification, but meant that,
- with applications using a single external cache for quite
- different requirements, clients could circumvent ciphersuite
- restrictions for a given session ID context by starting a session
- in a different context.
- [Bodo Moeller]
-
- *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
- a ciphersuite string such as "DEFAULT:RSA" cannot enable
- authentication-only ciphersuites.
- [Bodo Moeller]
-
- *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
- not complete and could lead to a possible single byte overflow
- (CVE-2007-5135) [Ben Laurie]
-
- Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
-
- *) Since AES128 and AES256 (and similarly Camellia128 and
- Camellia256) share a single mask bit in the logic of
- ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
- kludge to work properly if AES128 is available and AES256 isn't
- (or if Camellia128 is available and Camellia256 isn't).
- [Victor Duchovni]
-
- *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
- (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
- When a point or a seed is encoded in a BIT STRING, we need to
- prevent the removal of trailing zero bits to get the proper DER
- encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
- of a NamedBitList, for which trailing 0 bits need to be removed.)
- [Bodo Moeller]
-
- *) Have SSL/TLS server implementation tolerate "mismatched" record
- protocol version while receiving ClientHello even if the
- ClientHello is fragmented. (The server can't insist on the
- particular protocol version it has chosen before the ServerHello
- message has informed the client about his choice.)
- [Bodo Moeller]
-
- *) Add RFC 3779 support.
- [Rob Austein for ARIN, Ben Laurie]
-
- *) Load error codes if they are not already present instead of using a
- static variable. This allows them to be cleanly unloaded and reloaded.
- Improve header file function name parsing.
- [Steve Henson]
-
- *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
- or CAPABILITY handshake as required by RFCs.
- [Goetz Babin-Ebell]
-
- Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
-
- *) Introduce limits to prevent malicious keys being able to
- cause a denial of service. (CVE-2006-2940)
- [Steve Henson, Bodo Moeller]
-
- *) Fix ASN.1 parsing of certain invalid structures that can result
- in a denial of service. (CVE-2006-2937) [Steve Henson]
-
- *) Fix buffer overflow in SSL_get_shared_ciphers() function.
- (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
-
- *) Fix SSL client code which could crash if connecting to a
- malicious SSLv2 server. (CVE-2006-4343)
- [Tavis Ormandy and Will Drewry, Google Security Team]
-
- *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
- match only those. Before that, "AES256-SHA" would be interpreted
- as a pattern and match "AES128-SHA" too (since AES128-SHA got
- the same strength classification in 0.9.7h) as we currently only
- have a single AES bit in the ciphersuite description bitmap.
- That change, however, also applied to ciphersuite strings such as
- "RC4-MD5" that intentionally matched multiple ciphersuites --
- namely, SSL 2.0 ciphersuites in addition to the more common ones
- from SSL 3.0/TLS 1.0.
-
- So we change the selection algorithm again: Naming an explicit
- ciphersuite selects this one ciphersuite, and any other similar
- ciphersuite (same bitmap) from *other* protocol versions.
- Thus, "RC4-MD5" again will properly select both the SSL 2.0
- ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
-
- Since SSL 2.0 does not have any ciphersuites for which the
- 128/256 bit distinction would be relevant, this works for now.
- The proper fix will be to use different bits for AES128 and
- AES256, which would have avoided the problems from the beginning;
- however, bits are scarce, so we can only do this in a new release
- (not just a patchlevel) when we can change the SSL_CIPHER
- definition to split the single 'unsigned long mask' bitmap into
- multiple values to extend the available space.
-
- [Bodo Moeller]
-
- Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
-
- *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
- (CVE-2006-4339) [Ben Laurie and Google Security Team]
-
- *) Add AES IGE and biIGE modes.
- [Ben Laurie]
-
- *) Change the Unix randomness entropy gathering to use poll() when
- possible instead of select(), since the latter has some
- undesirable limitations.
- [Darryl Miles via Richard Levitte and Bodo Moeller]
-
- *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
- treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
- cannot be implicitly activated as part of, e.g., the "AES" alias.
- However, please upgrade to OpenSSL 0.9.9[-dev] for
- non-experimental use of the ECC ciphersuites to get TLS extension
- support, which is required for curve and point format negotiation
- to avoid potential handshake problems.
- [Bodo Moeller]
-
- *) Disable rogue ciphersuites:
-
- - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
- - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
- - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
-
- The latter two were purportedly from
- draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
- appear there.
-
- Also deactivate the remaining ciphersuites from
- draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
- unofficial, and the ID has long expired.
- [Bodo Moeller]
-
- *) Fix RSA blinding Heisenbug (problems sometimes occurred on
- dual-core machines) and other potential thread-safety issues.
- [Bodo Moeller]
-
- *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
- versions), which is now available for royalty-free use
- (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
- Also, add Camellia TLS ciphersuites from RFC 4132.
-
- To minimize changes between patchlevels in the OpenSSL 0.9.8
- series, Camellia remains excluded from compilation unless OpenSSL
- is configured with 'enable-camellia'.
- [NTT]
-
- *) Disable the padding bug check when compression is in use. The padding
- bug check assumes the first packet is of even length, this is not
- necessarily true if compression is enabled and can result in false
- positives causing handshake failure. The actual bug test is ancient
- code so it is hoped that implementations will either have fixed it by
- now or any which still have the bug do not support compression.
- [Steve Henson]
-
- Changes between 0.9.8a and 0.9.8b [04 May 2006]
-
- *) When applying a cipher rule check to see if string match is an explicit
- cipher suite and only match that one cipher suite if it is.
- [Steve Henson]
-
- *) Link in manifests for VC++ if needed.
- [Austin Ziegler <halostatue@gmail.com>]
-
- *) Update support for ECC-based TLS ciphersuites according to
- draft-ietf-tls-ecc-12.txt with proposed changes (but without
- TLS extensions, which are supported starting with the 0.9.9
- branch, not in the OpenSSL 0.9.8 branch).
- [Douglas Stebila]
-
- *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
- opaque EVP_CIPHER_CTX handling.
- [Steve Henson]
-
- *) Fixes and enhancements to zlib compression code. We now only use
- "zlib1.dll" and use the default __cdecl calling convention on Win32
- to conform with the standards mentioned here:
- http://www.zlib.net/DLL_FAQ.txt
- Static zlib linking now works on Windows and the new --with-zlib-include
- --with-zlib-lib options to Configure can be used to supply the location
- of the headers and library. Gracefully handle case where zlib library
- can't be loaded.
- [Steve Henson]
-
- *) Several fixes and enhancements to the OID generation code. The old code
- sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
- handle numbers larger than ULONG_MAX, truncated printing and had a
- non standard OBJ_obj2txt() behaviour.
- [Steve Henson]
-
- *) Add support for building of engines under engine/ as shared libraries
- under VC++ build system.
- [Steve Henson]
-
- *) Corrected the numerous bugs in the Win32 path splitter in DSO.
- Hopefully, we will not see any false combination of paths any more.
- [Richard Levitte]
-
- Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
-
- *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
- (part of SSL_OP_ALL). This option used to disable the
- countermeasure against man-in-the-middle protocol-version
- rollback in the SSL 2.0 server implementation, which is a bad
- idea. (CVE-2005-2969)
-
- [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
- for Information Security, National Institute of Advanced Industrial
- Science and Technology [AIST], Japan)]
-
- *) Add two function to clear and return the verify parameter flags.
- [Steve Henson]
-
- *) Keep cipherlists sorted in the source instead of sorting them at
- runtime, thus removing the need for a lock.
- [Nils Larsch]
-
- *) Avoid some small subgroup attacks in Diffie-Hellman.
- [Nick Mathewson and Ben Laurie]
-
- *) Add functions for well-known primes.
- [Nick Mathewson]
-
- *) Extended Windows CE support.
- [Satoshi Nakamura and Andy Polyakov]
-
- *) Initialize SSL_METHOD structures at compile time instead of during
- runtime, thus removing the need for a lock.
- [Steve Henson]
-
- *) Make PKCS7_decrypt() work even if no certificate is supplied by
- attempting to decrypt each encrypted key in turn. Add support to
- smime utility.
- [Steve Henson]
-
- Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
-
- [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
- OpenSSL 0.9.8.]
-
- *) Add libcrypto.pc and libssl.pc for those who feel they need them.
- [Richard Levitte]
-
- *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
- key into the same file any more.
- [Richard Levitte]
-
- *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
- [Andy Polyakov]
-
- *) Add -utf8 command line and config file option to 'ca'.
- [Stefan <stf@udoma.org]
-
- *) Removed the macro des_crypt(), as it seems to conflict with some
- libraries. Use DES_crypt().
- [Richard Levitte]
-
- *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
- involves renaming the source and generated shared-libs for
- both. The engines will accept the corrected or legacy ids
- ('ncipher' and '4758_cca' respectively) when binding. NB,
- this only applies when building 'shared'.
- [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
-
- *) Add attribute functions to EVP_PKEY structure. Modify
- PKCS12_create() to recognize a CSP name attribute and
- use it. Make -CSP option work again in pkcs12 utility.
- [Steve Henson]
-
- *) Add new functionality to the bn blinding code:
- - automatic re-creation of the BN_BLINDING parameters after
- a fixed number of uses (currently 32)
- - add new function for parameter creation
- - introduce flags to control the update behaviour of the
- BN_BLINDING parameters
- - hide BN_BLINDING structure
- Add a second BN_BLINDING slot to the RSA structure to improve
- performance when a single RSA object is shared among several
- threads.
- [Nils Larsch]
-
- *) Add support for DTLS.
- [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
-
- *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
- to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
- [Walter Goulet]
-
- *) Remove buggy and incomplete DH cert support from
- ssl/ssl_rsa.c and ssl/s3_both.c
- [Nils Larsch]
-
- *) Use SHA-1 instead of MD5 as the default digest algorithm for
- the apps/openssl applications.
- [Nils Larsch]
-
- *) Compile clean with "-Wall -Wmissing-prototypes
- -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
- DEBUG_SAFESTACK must also be set.
- [Ben Laurie]
-
- *) Change ./Configure so that certain algorithms can be disabled by default.
- The new counterpiece to "no-xxx" is "enable-xxx".
-
- The patented RC5 and MDC2 algorithms will now be disabled unless
- "enable-rc5" and "enable-mdc2", respectively, are specified.
-
- (IDEA remains enabled despite being patented. This is because IDEA
- is frequently required for interoperability, and there is no license
- fee for non-commercial use. As before, "no-idea" can be used to
- avoid this algorithm.)
-
- [Bodo Moeller]
-
- *) Add processing of proxy certificates (see RFC 3820). This work was
- sponsored by KTH (The Royal Institute of Technology in Stockholm) and
- EGEE (Enabling Grids for E-science in Europe).
- [Richard Levitte]
-
- *) RC4 performance overhaul on modern architectures/implementations, such
- as Intel P4, IA-64 and AMD64.
- [Andy Polyakov]
-
- *) New utility extract-section.pl. This can be used specify an alternative
- section number in a pod file instead of having to treat each file as
- a separate case in Makefile. This can be done by adding two lines to the
- pod file:
-
- =for comment openssl_section:XXX
-
- The blank line is mandatory.
-
- [Steve Henson]
-
- *) New arguments -certform, -keyform and -pass for s_client and s_server
- to allow alternative format key and certificate files and passphrase
- sources.
- [Steve Henson]
-
- *) New structure X509_VERIFY_PARAM which combines current verify parameters,
- update associated structures and add various utility functions.
-
- Add new policy related verify parameters, include policy checking in
- standard verify code. Enhance 'smime' application with extra parameters
- to support policy checking and print out.
- [Steve Henson]
-
- *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
- Nehemiah processors. These extensions support AES encryption in hardware
- as well as RNG (though RNG support is currently disabled).
- [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
-
- *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
- [Geoff Thorpe]
-
- *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
- [Andy Polyakov and a number of other people]
-
- *) Improved PowerPC platform support. Most notably BIGNUM assembler
- implementation contributed by IBM.
- [Suresh Chari, Peter Waltenberg, Andy Polyakov]
-
- *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
- exponent rather than 'unsigned long'. There is a corresponding change to
- the new 'rsa_keygen' element of the RSA_METHOD structure.
- [Jelte Jansen, Geoff Thorpe]
-
- *) Functionality for creating the initial serial number file is now
- moved from CA.pl to the 'ca' utility with a new option -create_serial.
-
- (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
- number file to 1, which is bound to cause problems. To avoid
- the problems while respecting compatibility between different 0.9.7
- patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
- CA.pl for serial number initialization. With the new release 0.9.8,
- we can fix the problem directly in the 'ca' utility.)
- [Steve Henson]
-
- *) Reduced header interdependencies by declaring more opaque objects in
- ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
- give fewer recursive includes, which could break lazy source code - so
- this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
- developers should define this symbol when building and using openssl to
- ensure they track the recommended behaviour, interfaces, [etc], but
- backwards-compatible behaviour prevails when this isn't defined.
- [Geoff Thorpe]
-
- *) New function X509_POLICY_NODE_print() which prints out policy nodes.
- [Steve Henson]
-
- *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
- This will generate a random key of the appropriate length based on the
- cipher context. The EVP_CIPHER can provide its own random key generation
- routine to support keys of a specific form. This is used in the des and
- 3des routines to generate a key of the correct parity. Update S/MIME
- code to use new functions and hence generate correct parity DES keys.
- Add EVP_CHECK_DES_KEY #define to return an error if the key is not
- valid (weak or incorrect parity).
- [Steve Henson]
-
- *) Add a local set of CRLs that can be used by X509_verify_cert() as well
- as looking them up. This is useful when the verified structure may contain
- CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
- present unless the new PKCS7_NO_CRL flag is asserted.
- [Steve Henson]
-
- *) Extend ASN1 oid configuration module. It now additionally accepts the
- syntax:
-
- shortName = some long name, 1.2.3.4
- [Steve Henson]
-
- *) Reimplemented the BN_CTX implementation. There is now no more static
- limitation on the number of variables it can handle nor the depth of the
- "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
- information can now expand as required, and rather than having a single
- static array of bignums, BN_CTX now uses a linked-list of such arrays
- allowing it to expand on demand whilst maintaining the usefulness of
- BN_CTX's "bundling".
- [Geoff Thorpe]
-
- *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
- to allow all RSA operations to function using a single BN_CTX.
- [Geoff Thorpe]
-
- *) Preliminary support for certificate policy evaluation and checking. This
- is initially intended to pass the tests outlined in "Conformance Testing
- of Relying Party Client Certificate Path Processing Logic" v1.07.
- [Steve Henson]
-
- *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
- remained unused and not that useful. A variety of other little bignum
- tweaks and fixes have also been made continuing on from the audit (see
- below).
- [Geoff Thorpe]
-
- *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
- associated ASN1, EVP and SSL functions and old ASN1 macros.
- [Richard Levitte]
-
- *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
- and this should never fail. So the return value from the use of
- BN_set_word() (which can fail due to needless expansion) is now deprecated;
- if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
- [Geoff Thorpe]
-
- *) BN_CTX_get() should return zero-valued bignums, providing the same
- initialised value as BN_new().
- [Geoff Thorpe, suggested by Ulf Möller]
-
- *) Support for inhibitAnyPolicy certificate extension.
- [Steve Henson]
-
- *) An audit of the BIGNUM code is underway, for which debugging code is
- enabled when BN_DEBUG is defined. This makes stricter enforcements on what
- is considered valid when processing BIGNUMs, and causes execution to
- assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
- further steps are taken to deliberately pollute unused data in BIGNUM
- structures to try and expose faulty code further on. For now, openssl will
- (in its default mode of operation) continue to tolerate the inconsistent
- forms that it has tolerated in the past, but authors and packagers should
- consider trying openssl and their own applications when compiled with
- these debugging symbols defined. It will help highlight potential bugs in
- their own code, and will improve the test coverage for OpenSSL itself. At
- some point, these tighter rules will become openssl's default to improve
- maintainability, though the assert()s and other overheads will remain only
- in debugging configurations. See bn.h for more details.
- [Geoff Thorpe, Nils Larsch, Ulf Möller]
-
- *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
- that can only be obtained through BN_CTX_new() (which implicitly
- initialises it). The presence of this function only made it possible
- to overwrite an existing structure (and cause memory leaks).
- [Geoff Thorpe]
-
- *) Because of the callback-based approach for implementing LHASH as a
- template type, lh_insert() adds opaque objects to hash-tables and
- lh_doall() or lh_doall_arg() are typically used with a destructor callback
- to clean up those corresponding objects before destroying the hash table
- (and losing the object pointers). So some over-zealous constifications in
- LHASH have been relaxed so that lh_insert() does not take (nor store) the
- objects as "const" and the lh_doall[_arg] callback wrappers are not
- prototyped to have "const" restrictions on the object pointers they are
- given (and so aren't required to cast them away any more).
- [Geoff Thorpe]
-
- *) The tmdiff.h API was so ugly and minimal that our own timing utility
- (speed) prefers to use its own implementation. The two implementations
- haven't been consolidated as yet (volunteers?) but the tmdiff API has had
- its object type properly exposed (MS_TM) instead of casting to/from "char
- *". This may still change yet if someone realises MS_TM and "ms_time_***"
- aren't necessarily the greatest nomenclatures - but this is what was used
- internally to the implementation so I've used that for now.
- [Geoff Thorpe]
-
- *) Ensure that deprecated functions do not get compiled when
- OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
- the self-tests were still using deprecated key-generation functions so
- these have been updated also.
- [Geoff Thorpe]
-
- *) Reorganise PKCS#7 code to separate the digest location functionality
- into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
- New function PKCS7_set_digest() to set the digest type for PKCS#7
- digestedData type. Add additional code to correctly generate the
- digestedData type and add support for this type in PKCS7 initialization
- functions.
- [Steve Henson]
-
- *) New function PKCS7_set0_type_other() this initializes a PKCS7
- structure of type "other".
- [Steve Henson]
-
- *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
- sure the loop does correctly stop and breaking ("division by zero")
- modulus operations are not performed. The (pre-generated) prime
- table crypto/bn/bn_prime.h was already correct, but it could not be
- re-generated on some platforms because of the "division by zero"
- situation in the script.
- [Ralf S. Engelschall]
-
- *) Update support for ECC-based TLS ciphersuites according to
- draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
- SHA-1 now is only used for "small" curves (where the
- representation of a field element takes up to 24 bytes); for
- larger curves, the field element resulting from ECDH is directly
- used as premaster secret.
- [Douglas Stebila (Sun Microsystems Laboratories)]
-
- *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
- curve secp160r1 to the tests.
- [Douglas Stebila (Sun Microsystems Laboratories)]
-
- *) Add the possibility to load symbols globally with DSO.
- [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
-
- *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
- control of the error stack.
- [Richard Levitte]
-
- *) Add support for STORE in ENGINE.
- [Richard Levitte]
-
- *) Add the STORE type. The intention is to provide a common interface
- to certificate and key stores, be they simple file-based stores, or
- HSM-type store, or LDAP stores, or...
- NOTE: The code is currently UNTESTED and isn't really used anywhere.
- [Richard Levitte]
-
- *) Add a generic structure called OPENSSL_ITEM. This can be used to
- pass a list of arguments to any function as well as provide a way
- for a function to pass data back to the caller.
- [Richard Levitte]
-
- *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
- works like BUF_strdup() but can be used to duplicate a portion of
- a string. The copy gets NUL-terminated. BUF_memdup() duplicates
- a memory area.
- [Richard Levitte]
-
- *) Add the function sk_find_ex() which works like sk_find(), but will
- return an index to an element even if an exact match couldn't be
- found. The index is guaranteed to point at the element where the
- searched-for key would be inserted to preserve sorting order.
- [Richard Levitte]
-
- *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
- takes an extra flags argument for optional functionality. Currently,
- the following flags are defined:
-
- OBJ_BSEARCH_VALUE_ON_NOMATCH
- This one gets OBJ_bsearch_ex() to return a pointer to the first
- element where the comparing function returns a negative or zero
- number.
-
- OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
- This one gets OBJ_bsearch_ex() to return a pointer to the first
- element where the comparing function returns zero. This is useful
- if there are more than one element where the comparing function
- returns zero.
- [Richard Levitte]
-
- *) Make it possible to create self-signed certificates with 'openssl ca'
- in such a way that the self-signed certificate becomes part of the
- CA database and uses the same mechanisms for serial number generation
- as all other certificate signing. The new flag '-selfsign' enables
- this functionality. Adapt CA.sh and CA.pl.in.
- [Richard Levitte]
-
- *) Add functionality to check the public key of a certificate request
- against a given private. This is useful to check that a certificate
- request can be signed by that key (self-signing).
- [Richard Levitte]
-
- *) Make it possible to have multiple active certificates with the same
- subject in the CA index file. This is done only if the keyword
- 'unique_subject' is set to 'no' in the main CA section (default
- if 'CA_default') of the configuration file. The value is saved
- with the database itself in a separate index attribute file,
- named like the index file with '.attr' appended to the name.
- [Richard Levitte]
-
- *) Generate multi-valued AVAs using '+' notation in config files for
- req and dirName.
- [Steve Henson]
-
- *) Support for nameConstraints certificate extension.
- [Steve Henson]
-
- *) Support for policyConstraints certificate extension.
- [Steve Henson]
-
- *) Support for policyMappings certificate extension.
- [Steve Henson]
-
- *) Make sure the default DSA_METHOD implementation only uses its
- dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
- and change its own handlers to be NULL so as to remove unnecessary
- indirection. This lets alternative implementations fallback to the
- default implementation more easily.
- [Geoff Thorpe]
-
- *) Support for directoryName in GeneralName related extensions
- in config files.
- [Steve Henson]
-
- *) Make it possible to link applications using Makefile.shared.
- Make that possible even when linking against static libraries!
- [Richard Levitte]
-
- *) Support for single pass processing for S/MIME signing. This now
- means that S/MIME signing can be done from a pipe, in addition
- cleartext signing (multipart/signed type) is effectively streaming
- and the signed data does not need to be all held in memory.
-
- This is done with a new flag PKCS7_STREAM. When this flag is set
- PKCS7_sign() only initializes the PKCS7 structure and the actual signing
- is done after the data is output (and digests calculated) in
- SMIME_write_PKCS7().
- [Steve Henson]
-
- *) Add full support for -rpath/-R, both in shared libraries and
- applications, at least on the platforms where it's known how
- to do it.
- [Richard Levitte]
-
- *) In crypto/ec/ec_mult.c, implement fast point multiplication with
- precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
- will now compute a table of multiples of the generator that
- makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
- faster (notably in the case of a single point multiplication,
- scalar * generator).
- [Nils Larsch, Bodo Moeller]
-
- *) IPv6 support for certificate extensions. The various extensions
- which use the IP:a.b.c.d can now take IPv6 addresses using the
- formats of RFC1884 2.2 . IPv6 addresses are now also displayed
- correctly.
- [Steve Henson]
-
- *) Added an ENGINE that implements RSA by performing private key
- exponentiations with the GMP library. The conversions to and from
- GMP's mpz_t format aren't optimised nor are any montgomery forms
- cached, and on x86 it appears OpenSSL's own performance has caught up.
- However there are likely to be other architectures where GMP could
- provide a boost. This ENGINE is not built in by default, but it can be
- specified at Configure time and should be accompanied by the necessary
- linker additions, eg;
- ./config -DOPENSSL_USE_GMP -lgmp
- [Geoff Thorpe]
-
- *) "openssl engine" will not display ENGINE/DSO load failure errors when
- testing availability of engines with "-t" - the old behaviour is
- produced by increasing the feature's verbosity with "-tt".
- [Geoff Thorpe]
-
- *) ECDSA routines: under certain error conditions uninitialized BN objects
- could be freed. Solution: make sure initialization is performed early
- enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
- via PR#459)
- [Lutz Jaenicke]
-
- *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
- and DH_METHOD (eg. by ENGINE implementations) to override the normal
- software implementations. For DSA and DH, parameter generation can
- also be overridden by providing the appropriate method callbacks.
- [Geoff Thorpe]
-
- *) Change the "progress" mechanism used in key-generation and
- primality testing to functions that take a new BN_GENCB pointer in
- place of callback/argument pairs. The new API functions have "_ex"
- postfixes and the older functions are reimplemented as wrappers for
- the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
- declarations of the old functions to help (graceful) attempts to
- migrate to the new functions. Also, the new key-generation API
- functions operate on a caller-supplied key-structure and return
- success/failure rather than returning a key or NULL - this is to
- help make "keygen" another member function of RSA_METHOD etc.
-
- Example for using the new callback interface:
-
- int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
- void *my_arg = ...;
- BN_GENCB my_cb;
-
- BN_GENCB_set(&my_cb, my_callback, my_arg);
-
- return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
- /* For the meaning of a, b in calls to my_callback(), see the
- * documentation of the function that calls the callback.
- * cb will point to my_cb; my_arg can be retrieved as cb->arg.
- * my_callback should return 1 if it wants BN_is_prime_ex()
- * to continue, or 0 to stop.
- */
-
- [Geoff Thorpe]
-
- *) Change the ZLIB compression method to be stateful, and make it
- available to TLS with the number defined in
- draft-ietf-tls-compression-04.txt.
- [Richard Levitte]
-
- *) Add the ASN.1 structures and functions for CertificatePair, which
- is defined as follows (according to X.509_4thEditionDraftV6.pdf):
-
- CertificatePair ::= SEQUENCE {
- forward [0] Certificate OPTIONAL,
- reverse [1] Certificate OPTIONAL,
- -- at least one of the pair shall be present -- }
-
- Also implement the PEM functions to read and write certificate
- pairs, and defined the PEM tag as "CERTIFICATE PAIR".
-
- This needed to be defined, mostly for the sake of the LDAP
- attribute crossCertificatePair, but may prove useful elsewhere as
- well.
- [Richard Levitte]
-
- *) Make it possible to inhibit symlinking of shared libraries in
- Makefile.shared, for Cygwin's sake.
- [Richard Levitte]
-
- *) Extend the BIGNUM API by creating a function
- void BN_set_negative(BIGNUM *a, int neg);
- and a macro that behave like
- int BN_is_negative(const BIGNUM *a);
-
- to avoid the need to access 'a->neg' directly in applications.
- [Nils Larsch]
-
- *) Implement fast modular reduction for pseudo-Mersenne primes
- used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
- EC_GROUP_new_curve_GFp() will now automatically use this
- if applicable.
- [Nils Larsch <nla@trustcenter.de>]
-
- *) Add new lock type (CRYPTO_LOCK_BN).
- [Bodo Moeller]
-
- *) Change the ENGINE framework to automatically load engines
- dynamically from specific directories unless they could be
- found to already be built in or loaded. Move all the
- current engines except for the cryptodev one to a new
- directory engines/.
- The engines in engines/ are built as shared libraries if
- the "shared" options was given to ./Configure or ./config.
- Otherwise, they are inserted in libcrypto.a.
- /usr/local/ssl/engines is the default directory for dynamic
- engines, but that can be overridden at configure time through
- the usual use of --prefix and/or --openssldir, and at run
- time with the environment variable OPENSSL_ENGINES.
- [Geoff Thorpe and Richard Levitte]
-
- *) Add Makefile.shared, a helper makefile to build shared
- libraries. Adapt Makefile.org.
- [Richard Levitte]
-
- *) Add version info to Win32 DLLs.
- [Peter 'Luna' Runestig" <peter@runestig.com>]
-
- *) Add new 'medium level' PKCS#12 API. Certificates and keys
- can be added using this API to created arbitrary PKCS#12
- files while avoiding the low level API.
-
- New options to PKCS12_create(), key or cert can be NULL and
- will then be omitted from the output file. The encryption
- algorithm NIDs can be set to -1 for no encryption, the mac
- iteration count can be set to 0 to omit the mac.
-
- Enhance pkcs12 utility by making the -nokeys and -nocerts
- options work when creating a PKCS#12 file. New option -nomac
- to omit the mac, NONE can be set for an encryption algorithm.
- New code is modified to use the enhanced PKCS12_create()
- instead of the low level API.
- [Steve Henson]
-
- *) Extend ASN1 encoder to support indefinite length constructed
- encoding. This can output sequences tags and octet strings in
- this form. Modify pk7_asn1.c to support indefinite length
- encoding. This is experimental and needs additional code to
- be useful, such as an ASN1 bio and some enhanced streaming
- PKCS#7 code.
-
- Extend template encode functionality so that tagging is passed
- down to the template encoder.
- [Steve Henson]
-
- *) Let 'openssl req' fail if an argument to '-newkey' is not
- recognized instead of using RSA as a default.
- [Bodo Moeller]
-
- *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
- As these are not official, they are not included in "ALL";
- the "ECCdraft" ciphersuite group alias can be used to select them.
- [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
-
- *) Add ECDH engine support.
- [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
-
- *) Add ECDH in new directory crypto/ecdh/.
- [Douglas Stebila (Sun Microsystems Laboratories)]
-
- *) Let BN_rand_range() abort with an error after 100 iterations
- without success (which indicates a broken PRNG).
- [Bodo Moeller]
-
- *) Change BN_mod_sqrt() so that it verifies that the input value
- is really the square of the return value. (Previously,
- BN_mod_sqrt would show GIGO behaviour.)
- [Bodo Moeller]
-
- *) Add named elliptic curves over binary fields from X9.62, SECG,
- and WAP/WTLS; add OIDs that were still missing.
-
- [Sheueling Chang Shantz and Douglas Stebila
- (Sun Microsystems Laboratories)]
-
- *) Extend the EC library for elliptic curves over binary fields
- (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
- New EC_METHOD:
-
- EC_GF2m_simple_method
-
- New API functions:
-
- EC_GROUP_new_curve_GF2m
- EC_GROUP_set_curve_GF2m
- EC_GROUP_get_curve_GF2m
- EC_POINT_set_affine_coordinates_GF2m
- EC_POINT_get_affine_coordinates_GF2m
- EC_POINT_set_compressed_coordinates_GF2m
-
- Point compression for binary fields is disabled by default for
- patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
- enable it).
-
- As binary polynomials are represented as BIGNUMs, various members
- of the EC_GROUP and EC_POINT data structures can be shared
- between the implementations for prime fields and binary fields;
- the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
- are essentially identical to their ..._GFp counterparts.
- (For simplicity, the '..._GFp' prefix has been dropped from
- various internal method names.)
-
- An internal 'field_div' method (similar to 'field_mul' and
- 'field_sqr') has been added; this is used only for binary fields.
-
- [Sheueling Chang Shantz and Douglas Stebila
- (Sun Microsystems Laboratories)]
-
- *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
- through methods ('mul', 'precompute_mult').
-
- The generic implementations (now internally called 'ec_wNAF_mul'
- and 'ec_wNAF_precomputed_mult') remain the default if these
- methods are undefined.
-
- [Sheueling Chang Shantz and Douglas Stebila
- (Sun Microsystems Laboratories)]
-
- *) New function EC_GROUP_get_degree, which is defined through
- EC_METHOD. For curves over prime fields, this returns the bit
- length of the modulus.
-
- [Sheueling Chang Shantz and Douglas Stebila
- (Sun Microsystems Laboratories)]
-
- *) New functions EC_GROUP_dup, EC_POINT_dup.
- (These simply call ..._new and ..._copy).
-
- [Sheueling Chang Shantz and Douglas Stebila
- (Sun Microsystems Laboratories)]
-
- *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
- Polynomials are represented as BIGNUMs (where the sign bit is not
- used) in the following functions [macros]:
-
- BN_GF2m_add
- BN_GF2m_sub [= BN_GF2m_add]
- BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
- BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
- BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
- BN_GF2m_mod_inv
- BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
- BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
- BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
- BN_GF2m_cmp [= BN_ucmp]
-
- (Note that only the 'mod' functions are actually for fields GF(2^m).
- BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
-
- For some functions, an the irreducible polynomial defining a
- field can be given as an 'unsigned int[]' with strictly
- decreasing elements giving the indices of those bits that are set;
- i.e., p[] represents the polynomial
- f(t) = t^p[0] + t^p[1] + ... + t^p[k]
- where
- p[0] > p[1] > ... > p[k] = 0.
- This applies to the following functions:
-
- BN_GF2m_mod_arr
- BN_GF2m_mod_mul_arr
- BN_GF2m_mod_sqr_arr
- BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
- BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
- BN_GF2m_mod_exp_arr
- BN_GF2m_mod_sqrt_arr
- BN_GF2m_mod_solve_quad_arr
- BN_GF2m_poly2arr
- BN_GF2m_arr2poly
-
- Conversion can be performed by the following functions:
-
- BN_GF2m_poly2arr
- BN_GF2m_arr2poly
-
- bntest.c has additional tests for binary polynomial arithmetic.
-
- Two implementations for BN_GF2m_mod_div() are available.
- The default algorithm simply uses BN_GF2m_mod_inv() and
- BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
- if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
- copyright notice in crypto/bn/bn_gf2m.c before enabling it).
-
- [Sheueling Chang Shantz and Douglas Stebila
- (Sun Microsystems Laboratories)]
-
- *) Add new error code 'ERR_R_DISABLED' that can be used when some
- functionality is disabled at compile-time.
- [Douglas Stebila <douglas.stebila@sun.com>]
-
- *) Change default behaviour of 'openssl asn1parse' so that more
- information is visible when viewing, e.g., a certificate:
-
- Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
- mode the content of non-printable OCTET STRINGs is output in a
- style similar to INTEGERs, but with '[HEX DUMP]' prepended to
- avoid the appearance of a printable string.
- [Nils Larsch <nla@trustcenter.de>]
-
- *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
- functions
- EC_GROUP_set_asn1_flag()
- EC_GROUP_get_asn1_flag()
- EC_GROUP_set_point_conversion_form()
- EC_GROUP_get_point_conversion_form()
- These control ASN1 encoding details:
- - Curves (i.e., groups) are encoded explicitly unless asn1_flag
- has been set to OPENSSL_EC_NAMED_CURVE.
- - Points are encoded in uncompressed form by default; options for
- asn1_for are as for point2oct, namely
- POINT_CONVERSION_COMPRESSED
- POINT_CONVERSION_UNCOMPRESSED
- POINT_CONVERSION_HYBRID
-
- Also add 'seed' and 'seed_len' members to EC_GROUP with access
- functions
- EC_GROUP_set_seed()
- EC_GROUP_get0_seed()
- EC_GROUP_get_seed_len()
- This is used only for ASN1 purposes (so far).
- [Nils Larsch <nla@trustcenter.de>]
-
- *) Add 'field_type' member to EC_METHOD, which holds the NID
- of the appropriate field type OID. The new function
- EC_METHOD_get_field_type() returns this value.
- [Nils Larsch <nla@trustcenter.de>]
-
- *) Add functions
- EC_POINT_point2bn()
- EC_POINT_bn2point()
- EC_POINT_point2hex()
- EC_POINT_hex2point()
- providing useful interfaces to EC_POINT_point2oct() and
- EC_POINT_oct2point().
- [Nils Larsch <nla@trustcenter.de>]
-
- *) Change internals of the EC library so that the functions
- EC_GROUP_set_generator()
- EC_GROUP_get_generator()
- EC_GROUP_get_order()
- EC_GROUP_get_cofactor()
- are implemented directly in crypto/ec/ec_lib.c and not dispatched
- to methods, which would lead to unnecessary code duplication when
- adding different types of curves.
- [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
-
- *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
- arithmetic, and such that modified wNAFs are generated
- (which avoid length expansion in many cases).
- [Bodo Moeller]
-
- *) Add a function EC_GROUP_check_discriminant() (defined via
- EC_METHOD) that verifies that the curve discriminant is non-zero.
-
- Add a function EC_GROUP_check() that makes some sanity tests
- on a EC_GROUP, its generator and order. This includes
- EC_GROUP_check_discriminant().
- [Nils Larsch <nla@trustcenter.de>]
-
- *) Add ECDSA in new directory crypto/ecdsa/.
-
- Add applications 'openssl ecparam' and 'openssl ecdsa'
- (these are based on 'openssl dsaparam' and 'openssl dsa').
-
- ECDSA support is also included in various other files across the
- library. Most notably,
- - 'openssl req' now has a '-newkey ecdsa:file' option;
- - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
- - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
- d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
- them suitable for ECDSA where domain parameters must be
- extracted before the specific public key;
- - ECDSA engine support has been added.
- [Nils Larsch <nla@trustcenter.de>]
-
- *) Include some named elliptic curves, and add OIDs from X9.62,
- SECG, and WAP/WTLS. Each curve can be obtained from the new
- function
- EC_GROUP_new_by_curve_name(),
- and the list of available named curves can be obtained with
- EC_get_builtin_curves().
- Also add a 'curve_name' member to EC_GROUP objects, which can be
- accessed via
- EC_GROUP_set_curve_name()
- EC_GROUP_get_curve_name()
- [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
-
- *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
- was actually never needed) and in BN_mul(). The removal in BN_mul()
- required a small change in bn_mul_part_recursive() and the addition
- of the functions bn_cmp_part_words(), bn_sub_part_words() and
- bn_add_part_words(), which do the same thing as bn_cmp_words(),
- bn_sub_words() and bn_add_words() except they take arrays with
- differing sizes.
- [Richard Levitte]
-
- Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
-
- *) Cleanse PEM buffers before freeing them since they may contain
- sensitive data.
- [Benjamin Bennett <ben@psc.edu>]
-
- *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
- a ciphersuite string such as "DEFAULT:RSA" cannot enable
- authentication-only ciphersuites.
- [Bodo Moeller]
-
- *) Since AES128 and AES256 share a single mask bit in the logic of
- ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
- kludge to work properly if AES128 is available and AES256 isn't.
- [Victor Duchovni]
-
- *) Expand security boundary to match 1.1.1 module.
- [Steve Henson]
-
- *) Remove redundant features: hash file source, editing of test vectors
- modify fipsld to use external fips_premain.c signature.
- [Steve Henson]
-
- *) New perl script mkfipsscr.pl to create shell scripts or batch files to
- run algorithm test programs.
- [Steve Henson]
-
- *) Make algorithm test programs more tolerant of whitespace.
- [Steve Henson]
-
- *) Have SSL/TLS server implementation tolerate "mismatched" record
- protocol version while receiving ClientHello even if the
- ClientHello is fragmented. (The server can't insist on the
- particular protocol version it has chosen before the ServerHello
- message has informed the client about his choice.)
- [Bodo Moeller]
-
- *) Load error codes if they are not already present instead of using a
- static variable. This allows them to be cleanly unloaded and reloaded.
- [Steve Henson]
-
- Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
-
- *) Introduce limits to prevent malicious keys being able to
- cause a denial of service. (CVE-2006-2940)
- [Steve Henson, Bodo Moeller]
-
- *) Fix ASN.1 parsing of certain invalid structures that can result
- in a denial of service. (CVE-2006-2937) [Steve Henson]
-
- *) Fix buffer overflow in SSL_get_shared_ciphers() function.
- (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
-
- *) Fix SSL client code which could crash if connecting to a
- malicious SSLv2 server. (CVE-2006-4343)
- [Tavis Ormandy and Will Drewry, Google Security Team]
-
- *) Change ciphersuite string processing so that an explicit
- ciphersuite selects this one ciphersuite (so that "AES256-SHA"
- will no longer include "AES128-SHA"), and any other similar
- ciphersuite (same bitmap) from *other* protocol versions (so that
- "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
- SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
- changes from 0.9.8b and 0.9.8d.
- [Bodo Moeller]
-
- Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
-
- *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
- (CVE-2006-4339) [Ben Laurie and Google Security Team]
-
- *) Change the Unix randomness entropy gathering to use poll() when
- possible instead of select(), since the latter has some
- undesirable limitations.
- [Darryl Miles via Richard Levitte and Bodo Moeller]
-
- *) Disable rogue ciphersuites:
-
- - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
- - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
- - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
-
- The latter two were purportedly from
- draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
- appear there.
-
- Also deactivate the remaining ciphersuites from
- draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
- unofficial, and the ID has long expired.
- [Bodo Moeller]
-
- *) Fix RSA blinding Heisenbug (problems sometimes occurred on
- dual-core machines) and other potential thread-safety issues.
- [Bodo Moeller]
-
- Changes between 0.9.7i and 0.9.7j [04 May 2006]
-
- *) Adapt fipsld and the build system to link against the validated FIPS
- module in FIPS mode.
- [Steve Henson]
-
- *) Fixes for VC++ 2005 build under Windows.
- [Steve Henson]
-
- *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
- from a Windows bash shell such as MSYS. It is autodetected from the
- "config" script when run from a VC++ environment. Modify standard VC++
- build to use fipscanister.o from the GNU make build.
- [Steve Henson]
-
- Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
-
- *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
- The value now differs depending on if you build for FIPS or not.
- BEWARE! A program linked with a shared FIPSed libcrypto can't be
- safely run with a non-FIPSed libcrypto, as it may crash because of
- the difference induced by this change.
- [Andy Polyakov]
-
- Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
-
- *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
- (part of SSL_OP_ALL). This option used to disable the
- countermeasure against man-in-the-middle protocol-version
- rollback in the SSL 2.0 server implementation, which is a bad
- idea. (CVE-2005-2969)
+ *Paul Yang*
- [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
- for Information Security, National Institute of Advanced Industrial
- Science and Technology [AIST], Japan)]
-
- *) Minimal support for X9.31 signatures and PSS padding modes. This is
- mainly for FIPS compliance and not fully integrated at this stage.
- [Steve Henson]
+ * Use SHA256 as the default digest for TS query in the ts app.
- *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
- the exponentiation using a fixed-length exponent. (Otherwise,
- the information leaked through timing could expose the secret key
- after many signatures; cf. Bleichenbacher's attack on DSA with
- biased k.)
- [Bodo Moeller]
+ *Tomas Mraz*
- *) Make a new fixed-window mod_exp implementation the default for
- RSA, DSA, and DH private-key operations so that the sequence of
- squares and multiplies and the memory access pattern are
- independent of the particular secret key. This will mitigate
- cache-timing and potential related attacks.
-
- BN_mod_exp_mont_consttime() is the new exponentiation implementation,
- and this is automatically used by BN_mod_exp_mont() if the new flag
- BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
- will use this BN flag for private exponents unless the flag
- RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
- DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
-
- [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
-
- *) Change the client implementation for SSLv23_method() and
- SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
- Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
- (Previously, the SSL 2.0 backwards compatible Client Hello
- message format would be used even with SSL_OP_NO_SSLv2.)
- [Bodo Moeller]
-
- *) Add support for smime-type MIME parameter in S/MIME messages which some
- clients need.
- [Steve Henson]
-
- *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
- a threadsafe manner. Modify rsa code to use new function and add calls
- to dsa and dh code (which had race conditions before).
- [Steve Henson]
-
- *) Include the fixed error library code in the C error file definitions
- instead of fixing them up at runtime. This keeps the error code
- structures constant.
- [Steve Henson]
-
- Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
-
- [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
- OpenSSL 0.9.8.]
-
- *) Fixes for newer kerberos headers. NB: the casts are needed because
- the 'length' field is signed on one version and unsigned on another
- with no (?) obvious way to tell the difference, without these VC++
- complains. Also the "definition" of FAR (blank) is no longer included
- nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
- some needed definitions.
- [Steve Henson]
-
- *) Undo Cygwin change.
- [Ulf Möller]
-
- *) Added support for proxy certificates according to RFC 3820.
- Because they may be a security thread to unaware applications,
- they must be explicitly allowed in run-time. See
- docs/HOWTO/proxy_certificates.txt for further information.
- [Richard Levitte]
-
- Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
-
- *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
- server and client random values. Previously
- (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
- less random data when sizeof(time_t) > 4 (some 64 bit platforms).
-
- This change has negligible security impact because:
-
- 1. Server and client random values still have 24 bytes of pseudo random
- data.
-
- 2. Server and client random values are sent in the clear in the initial
- handshake.
-
- 3. The master secret is derived using the premaster secret (48 bytes in
- size for static RSA ciphersuites) as well as client server and random
- values.
-
- The OpenSSL team would like to thank the UK NISCC for bringing this issue
- to our attention.
-
- [Stephen Henson, reported by UK NISCC]
-
- *) Use Windows randomness collection on Cygwin.
- [Ulf Möller]
-
- *) Fix hang in EGD/PRNGD query when communication socket is closed
- prematurely by EGD/PRNGD.
- [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
-
- *) Prompt for pass phrases when appropriate for PKCS12 input format.
- [Steve Henson]
-
- *) Back-port of selected performance improvements from development
- branch, as well as improved support for PowerPC platforms.
- [Andy Polyakov]
-
- *) Add lots of checks for memory allocation failure, error codes to indicate
- failure and freeing up memory if a failure occurs.
- [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
-
- *) Add new -passin argument to dgst.
- [Steve Henson]
-
- *) Perform some character comparisons of different types in X509_NAME_cmp:
- this is needed for some certificates that re-encode DNs into UTF8Strings
- (in violation of RFC3280) and can't or won't issue name rollover
- certificates.
- [Steve Henson]
-
- *) Make an explicit check during certificate validation to see that
- the CA setting in each certificate on the chain is correct. As a
- side effect always do the following basic checks on extensions,
- not just when there's an associated purpose to the check:
-
- - if there is an unhandled critical extension (unless the user
- has chosen to ignore this fault)
- - if the path length has been exceeded (if one is set at all)
- - that certain extensions fit the associated purpose (if one has
- been given)
- [Richard Levitte]
-
- Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
-
- *) Avoid a race condition when CRLs are checked in a multi threaded
- environment. This would happen due to the reordering of the revoked
- entries during signature checking and serial number lookup. Now the
- encoding is cached and the serial number sort performed under a lock.
- Add new STACK function sk_is_sorted().
- [Steve Henson]
-
- *) Add Delta CRL to the extension code.
- [Steve Henson]
-
- *) Various fixes to s3_pkt.c so alerts are sent properly.
- [David Holmes <d.holmes@f5.com>]
-
- *) Reduce the chances of duplicate issuer name and serial numbers (in
- violation of RFC3280) using the OpenSSL certificate creation utilities.
- This is done by creating a random 64 bit value for the initial serial
- number when a serial number file is created or when a self signed
- certificate is created using 'openssl req -x509'. The initial serial
- number file is created using 'openssl x509 -next_serial' in CA.pl
- rather than being initialized to 1.
- [Steve Henson]
-
- Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
-
- *) Fix null-pointer assignment in do_change_cipher_spec() revealed
- by using the Codenomicon TLS Test Tool (CVE-2004-0079)
- [Joe Orton, Steve Henson]
-
- *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
- (CVE-2004-0112)
- [Joe Orton, Steve Henson]
-
- *) Make it possible to have multiple active certificates with the same
- subject in the CA index file. This is done only if the keyword
- 'unique_subject' is set to 'no' in the main CA section (default
- if 'CA_default') of the configuration file. The value is saved
- with the database itself in a separate index attribute file,
- named like the index file with '.attr' appended to the name.
- [Richard Levitte]
-
- *) X509 verify fixes. Disable broken certificate workarounds when
- X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
- keyUsage extension present. Don't accept CRLs with unhandled critical
- extensions: since verify currently doesn't process CRL extensions this
- rejects a CRL with *any* critical extensions. Add new verify error codes
- for these cases.
- [Steve Henson]
-
- *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
- A clarification of RFC2560 will require the use of OCTET STRINGs and
- some implementations cannot handle the current raw format. Since OpenSSL
- copies and compares OCSP nonces as opaque blobs without any attempt at
- parsing them this should not create any compatibility issues.
- [Steve Henson]
-
- *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
- calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
- this HMAC (and other) operations are several times slower than OpenSSL
- < 0.9.7.
- [Steve Henson]
-
- *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
- [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
-
- *) Use the correct content when signing type "other".
- [Steve Henson]
-
- Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
-
- *) Fix various bugs revealed by running the NISCC test suite:
-
- Stop out of bounds reads in the ASN1 code when presented with
- invalid tags (CVE-2003-0543 and CVE-2003-0544).
-
- Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
-
- If verify callback ignores invalid public key errors don't try to check
- certificate signature with the NULL public key.
-
- [Steve Henson]
-
- *) New -ignore_err option in ocsp application to stop the server
- exiting on the first error in a request.
- [Steve Henson]
-
- *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
- if the server requested one: as stated in TLS 1.0 and SSL 3.0
- specifications.
- [Steve Henson]
-
- *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
- extra data after the compression methods not only for TLS 1.0
- but also for SSL 3.0 (as required by the specification).
- [Bodo Moeller; problem pointed out by Matthias Loepfe]
-
- *) Change X509_certificate_type() to mark the key as exported/exportable
- when it's 512 *bits* long, not 512 bytes.
- [Richard Levitte]
-
- *) Change AES_cbc_encrypt() so it outputs exact multiple of
- blocks during encryption.
- [Richard Levitte]
-
- *) Various fixes to base64 BIO and non blocking I/O. On write
- flushes were not handled properly if the BIO retried. On read
- data was not being buffered properly and had various logic bugs.
- This also affects blocking I/O when the data being decoded is a
- certain size.
- [Steve Henson]
-
- *) Various S/MIME bugfixes and compatibility changes:
- output correct application/pkcs7 MIME type if
- PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
- Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
- of files as .eml work). Correctly handle very long lines in MIME
- parser.
- [Steve Henson]
-
- Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
-
- *) Countermeasure against the Klima-Pokorny-Rosa extension of
- Bleichbacher's attack on PKCS #1 v1.5 padding: treat
- a protocol version number mismatch like a decryption error
- in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
- [Bodo Moeller]
-
- *) Turn on RSA blinding by default in the default implementation
- to avoid a timing attack. Applications that don't want it can call
- RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
- They would be ill-advised to do so in most cases.
- [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
-
- *) Change RSA blinding code so that it works when the PRNG is not
- seeded (in this case, the secret RSA exponent is abused as
- an unpredictable seed -- if it is not unpredictable, there
- is no point in blinding anyway). Make RSA blinding thread-safe
- by remembering the creator's thread ID in rsa->blinding and
- having all other threads use local one-time blinding factors
- (this requires more computation than sharing rsa->blinding, but
- avoids excessive locking; and if an RSA object is not shared
- between threads, blinding will still be very fast).
- [Bodo Moeller]
-
- *) Fixed a typo bug that would cause ENGINE_set_default() to set an
- ENGINE as defaults for all supported algorithms irrespective of
- the 'flags' parameter. 'flags' is now honoured, so applications
- should make sure they are passing it correctly.
- [Geoff Thorpe]
-
- *) Target "mingw" now allows native Windows code to be generated in
- the Cygwin environment as well as with the MinGW compiler.
- [Ulf Moeller]
-
- Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
-
- *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
- via timing by performing a MAC computation even if incorrect
- block cipher padding has been found. This is a countermeasure
- against active attacks where the attacker has to distinguish
- between bad padding and a MAC verification error. (CVE-2003-0078)
-
- [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
- Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
- Martin Vuagnoux (EPFL, Ilion)]
-
- *) Make the no-err option work as intended. The intention with no-err
- is not to have the whole error stack handling routines removed from
- libcrypto, it's only intended to remove all the function name and
- reason texts, thereby removing some of the footprint that may not
- be interesting if those errors aren't displayed anyway.
-
- NOTE: it's still possible for any application or module to have its
- own set of error texts inserted. The routines are there, just not
- used by default when no-err is given.
- [Richard Levitte]
-
- *) Add support for FreeBSD on IA64.
- [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
-
- *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
- Kerberos function mit_des_cbc_cksum(). Before this change,
- the value returned by DES_cbc_cksum() was like the one from
- mit_des_cbc_cksum(), except the bytes were swapped.
- [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
-
- *) Allow an application to disable the automatic SSL chain building.
- Before this a rather primitive chain build was always performed in
- ssl3_output_cert_chain(): an application had no way to send the
- correct chain if the automatic operation produced an incorrect result.
-
- Now the chain builder is disabled if either:
-
- 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
-
- 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
-
- The reasoning behind this is that an application would not want the
- auto chain building to take place if extra chain certificates are
- present and it might also want a means of sending no additional
- certificates (for example the chain has two certificates and the
- root is omitted).
- [Steve Henson]
-
- *) Add the possibility to build without the ENGINE framework.
- [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
-
- *) Under Win32 gmtime() can return NULL: check return value in
- OPENSSL_gmtime(). Add error code for case where gmtime() fails.
- [Steve Henson]
-
- *) DSA routines: under certain error conditions uninitialized BN objects
- could be freed. Solution: make sure initialization is performed early
- enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
- Nils Larsch <nla@trustcenter.de> via PR#459)
- [Lutz Jaenicke]
-
- *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
- checked on reconnect on the client side, therefore session resumption
- could still fail with a "ssl session id is different" error. This
- behaviour is masked when SSL_OP_ALL is used due to
- SSL_OP_MICROSOFT_SESS_ID_BUG being set.
- Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
- followup to PR #377.
- [Lutz Jaenicke]
-
- *) IA-32 assembler support enhancements: unified ELF targets, support
- for SCO/Caldera platforms, fix for Cygwin shared build.
- [Andy Polyakov]
-
- *) Add support for FreeBSD on sparc64. As a consequence, support for
- FreeBSD on non-x86 processors is separate from x86 processors on
- the config script, much like the NetBSD support.
- [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
-
- Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
-
- [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
- OpenSSL 0.9.7.]
-
- *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
- code (06) was taken as the first octet of the session ID and the last
- octet was ignored consequently. As a result SSLv2 client side session
- caching could not have worked due to the session ID mismatch between
- client and server.
- Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
- PR #377.
- [Lutz Jaenicke]
-
- *) Change the declaration of needed Kerberos libraries to use EX_LIBS
- instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
- removed entirely.
- [Richard Levitte]
-
- *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
- seems that in spite of existing for more than a year, many application
- author have done nothing to provide the necessary callbacks, which
- means that this particular engine will not work properly anywhere.
- This is a very unfortunate situation which forces us, in the name
- of usability, to give the hw_ncipher.c a static lock, which is part
- of libcrypto.
- NOTE: This is for the 0.9.7 series ONLY. This hack will never
- appear in 0.9.8 or later. We EXPECT application authors to have
- dealt properly with this when 0.9.8 is released (unless we actually
- make such changes in the libcrypto locking code that changes will
- have to be made anyway).
- [Richard Levitte]
-
- *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
- octets have been read, EOF or an error occurs. Without this change
- some truncated ASN1 structures will not produce an error.
- [Steve Henson]
-
- *) Disable Heimdal support, since it hasn't been fully implemented.
- Still give the possibility to force the use of Heimdal, but with
- warnings and a request that patches get sent to openssl-dev.
- [Richard Levitte]
-
- *) Add the VC-CE target, introduce the WINCE sysname, and add
- INSTALL.WCE and appropriate conditionals to make it build.
- [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
-
- *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
- cygssl-x.y.z.dll, where x, y and z are the major, minor and
- edit numbers of the version.
- [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
-
- *) Introduce safe string copy and catenation functions
- (BUF_strlcpy() and BUF_strlcat()).
- [Ben Laurie (CHATS) and Richard Levitte]
-
- *) Avoid using fixed-size buffers for one-line DNs.
- [Ben Laurie (CHATS)]
-
- *) Add BUF_MEM_grow_clean() to avoid information leakage when
- resizing buffers containing secrets, and use where appropriate.
- [Ben Laurie (CHATS)]
-
- *) Avoid using fixed size buffers for configuration file location.
- [Ben Laurie (CHATS)]
-
- *) Avoid filename truncation for various CA files.
- [Ben Laurie (CHATS)]
-
- *) Use sizeof in preference to magic numbers.
- [Ben Laurie (CHATS)]
-
- *) Avoid filename truncation in cert requests.
- [Ben Laurie (CHATS)]
-
- *) Add assertions to check for (supposedly impossible) buffer
- overflows.
- [Ben Laurie (CHATS)]
-
- *) Don't cache truncated DNS entries in the local cache (this could
- potentially lead to a spoofing attack).
- [Ben Laurie (CHATS)]
-
- *) Fix various buffers to be large enough for hex/decimal
- representations in a platform independent manner.
- [Ben Laurie (CHATS)]
-
- *) Add CRYPTO_realloc_clean() to avoid information leakage when
- resizing buffers containing secrets, and use where appropriate.
- [Ben Laurie (CHATS)]
-
- *) Add BIO_indent() to avoid much slightly worrying code to do
- indents.
- [Ben Laurie (CHATS)]
-
- *) Convert sprintf()/BIO_puts() to BIO_printf().
- [Ben Laurie (CHATS)]
-
- *) buffer_gets() could terminate with the buffer only half
- full. Fixed.
- [Ben Laurie (CHATS)]
-
- *) Add assertions to prevent user-supplied crypto functions from
- overflowing internal buffers by having large block sizes, etc.
- [Ben Laurie (CHATS)]
-
- *) New OPENSSL_assert() macro (similar to assert(), but enabled
- unconditionally).
- [Ben Laurie (CHATS)]
-
- *) Eliminate unused copy of key in RC4.
- [Ben Laurie (CHATS)]
-
- *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
- [Ben Laurie (CHATS)]
-
- *) Fix off-by-one error in EGD path.
- [Ben Laurie (CHATS)]
-
- *) If RANDFILE path is too long, ignore instead of truncating.
- [Ben Laurie (CHATS)]
-
- *) Eliminate unused and incorrectly sized X.509 structure
- CBCParameter.
- [Ben Laurie (CHATS)]
-
- *) Eliminate unused and dangerous function knumber().
- [Ben Laurie (CHATS)]
-
- *) Eliminate unused and dangerous structure, KSSL_ERR.
- [Ben Laurie (CHATS)]
-
- *) Protect against overlong session ID context length in an encoded
- session object. Since these are local, this does not appear to be
- exploitable.
- [Ben Laurie (CHATS)]
-
- *) Change from security patch (see 0.9.6e below) that did not affect
- the 0.9.6 release series:
-
- Remote buffer overflow in SSL3 protocol - an attacker could
- supply an oversized master key in Kerberos-enabled versions.
- (CVE-2002-0657)
- [Ben Laurie (CHATS)]
-
- *) Change the SSL kerb5 codes to match RFC 2712.
- [Richard Levitte]
-
- *) Make -nameopt work fully for req and add -reqopt switch.
- [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
-
- *) The "block size" for block ciphers in CFB and OFB mode should be 1.
- [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
-
- *) Make sure tests can be performed even if the corresponding algorithms
- have been removed entirely. This was also the last step to make
- OpenSSL compilable with DJGPP under all reasonable conditions.
- [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
-
- *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
- to allow version independent disabling of normally unselected ciphers,
- which may be activated as a side-effect of selecting a single cipher.
-
- (E.g., cipher list string "RSA" enables ciphersuites that are left
- out of "ALL" because they do not provide symmetric encryption.
- "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
- [Lutz Jaenicke, Bodo Moeller]
-
- *) Add appropriate support for separate platform-dependent build
- directories. The recommended way to make a platform-dependent
- build directory is the following (tested on Linux), maybe with
- some local tweaks:
-
- # Place yourself outside of the OpenSSL source tree. In
- # this example, the environment variable OPENSSL_SOURCE
- # is assumed to contain the absolute OpenSSL source directory.
- mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
- cd objtree/"`uname -s`-`uname -r`-`uname -m`"
- (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
- mkdir -p `dirname $F`
- ln -s $OPENSSL_SOURCE/$F $F
- done
-
- To be absolutely sure not to disturb the source tree, a "make clean"
- is a good thing. If it isn't successful, don't worry about it,
- it probably means the source directory is very clean.
- [Richard Levitte]
-
- *) Make sure any ENGINE control commands make local copies of string
- pointers passed to them whenever necessary. Otherwise it is possible
- the caller may have overwritten (or deallocated) the original string
- data when a later ENGINE operation tries to use the stored values.
- [Götz Babin-Ebell <babinebell@trustcenter.de>]
-
- *) Improve diagnostics in file reading and command-line digests.
- [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
-
- *) Add AES modes CFB and OFB to the object database. Correct an
- error in AES-CFB decryption.
- [Richard Levitte]
-
- *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
- allows existing EVP_CIPHER_CTX structures to be reused after
- calling EVP_*Final(). This behaviour is used by encryption
- BIOs and some applications. This has the side effect that
- applications must explicitly clean up cipher contexts with
- EVP_CIPHER_CTX_cleanup() or they will leak memory.
- [Steve Henson]
-
- *) Check the values of dna and dnb in bn_mul_recursive before calling
- bn_mul_comba (a non zero value means the a or b arrays do not contain
- n2 elements) and fallback to bn_mul_normal if either is not zero.
- [Steve Henson]
-
- *) Fix escaping of non-ASCII characters when using the -subj option
- of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
- [Lutz Jaenicke]
-
- *) Make object definitions compliant to LDAP (RFC2256): SN is the short
- form for "surname", serialNumber has no short form.
- Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
- therefore remove "mail" short name for "internet 7".
- The OID for unique identifiers in X509 certificates is
- x500UniqueIdentifier, not uniqueIdentifier.
- Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
- [Lutz Jaenicke]
-
- *) Add an "init" command to the ENGINE config module and auto initialize
- ENGINEs. Without any "init" command the ENGINE will be initialized
- after all ctrl commands have been executed on it. If init=1 the
- ENGINE is initialized at that point (ctrls before that point are run
- on the uninitialized ENGINE and after on the initialized one). If
- init=0 then the ENGINE will not be initialized at all.
- [Steve Henson]
-
- *) Fix the 'app_verify_callback' interface so that the user-defined
- argument is actually passed to the callback: In the
- SSL_CTX_set_cert_verify_callback() prototype, the callback
- declaration has been changed from
- int (*cb)()
- into
- int (*cb)(X509_STORE_CTX *,void *);
- in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
- i=s->ctx->app_verify_callback(&ctx)
- has been changed into
- i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
-
- To update applications using SSL_CTX_set_cert_verify_callback(),
- a dummy argument can be added to their callback functions.
- [D. K. Smetters <smetters@parc.xerox.com>]
-
- *) Added the '4758cca' ENGINE to support IBM 4758 cards.
- [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
-
- *) Add and OPENSSL_LOAD_CONF define which will cause
- OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
- This allows older applications to transparently support certain
- OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
- Two new functions OPENSSL_add_all_algorithms_noconf() which will never
- load the config file and OPENSSL_add_all_algorithms_conf() which will
- always load it have also been added.
- [Steve Henson]
-
- *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
- Adjust NIDs and EVP layer.
- [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
-
- *) Config modules support in openssl utility.
-
- Most commands now load modules from the config file,
- though in a few (such as version) this isn't done
- because it couldn't be used for anything.
-
- In the case of ca and req the config file used is
- the same as the utility itself: that is the -config
- command line option can be used to specify an
- alternative file.
- [Steve Henson]
-
- *) Move default behaviour from OPENSSL_config(). If appname is NULL
- use "openssl_conf" if filename is NULL use default openssl config file.
- [Steve Henson]
-
- *) Add an argument to OPENSSL_config() to allow the use of an alternative
- config section name. Add a new flag to tolerate a missing config file
- and move code to CONF_modules_load_file().
- [Steve Henson]
-
- *) Support for crypto accelerator cards from Accelerated Encryption
- Processing, www.aep.ie. (Use engine 'aep')
- The support was copied from 0.9.6c [engine] and adapted/corrected
- to work with the new engine framework.
- [AEP Inc. and Richard Levitte]
-
- *) Support for SureWare crypto accelerator cards from Baltimore
- Technologies. (Use engine 'sureware')
- The support was copied from 0.9.6c [engine] and adapted
- to work with the new engine framework.
- [Richard Levitte]
-
- *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
- make the newer ENGINE framework commands for the CHIL engine work.
- [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
-
- *) Make it possible to produce shared libraries on ReliantUNIX.
- [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
-
- *) Add the configuration target debug-linux-ppro.
- Make 'openssl rsa' use the general key loading routines
- implemented in apps.c, and make those routines able to
- handle the key format FORMAT_NETSCAPE and the variant
- FORMAT_IISSGC.
- [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
-
- *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
- [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
-
- *) Add -keyform to rsautl, and document -engine.
- [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
-
- *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
- BIO_R_NO_SUCH_FILE error code rather than the generic
- ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
- [Ben Laurie]
-
- *) Add new functions
- ERR_peek_last_error
- ERR_peek_last_error_line
- ERR_peek_last_error_line_data.
- These are similar to
- ERR_peek_error
- ERR_peek_error_line
- ERR_peek_error_line_data,
- but report on the latest error recorded rather than the first one
- still in the error queue.
- [Ben Laurie, Bodo Moeller]
-
- *) default_algorithms option in ENGINE config module. This allows things
- like:
- default_algorithms = ALL
- default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
- [Steve Henson]
-
- *) Preliminary ENGINE config module.
- [Steve Henson]
-
- *) New experimental application configuration code.
- [Steve Henson]
-
- *) Change the AES code to follow the same name structure as all other
- symmetric ciphers, and behave the same way. Move everything to
- the directory crypto/aes, thereby obsoleting crypto/rijndael.
- [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
-
- *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
- [Ben Laurie and Theo de Raadt]
-
- *) Add option to output public keys in req command.
- [Massimiliano Pala madwolf@openca.org]
-
- *) Use wNAFs in EC_POINTs_mul() for improved efficiency
- (up to about 10% better than before for P-192 and P-224).
- [Bodo Moeller]
-
- *) New functions/macros
-
- SSL_CTX_set_msg_callback(ctx, cb)
- SSL_CTX_set_msg_callback_arg(ctx, arg)
- SSL_set_msg_callback(ssl, cb)
- SSL_set_msg_callback_arg(ssl, arg)
-
- to request calling a callback function
-
- void cb(int write_p, int version, int content_type,
- const void *buf, size_t len, SSL *ssl, void *arg)
-
- whenever a protocol message has been completely received
- (write_p == 0) or sent (write_p == 1). Here 'version' is the
- protocol version according to which the SSL library interprets
- the current protocol message (SSL2_VERSION, SSL3_VERSION, or
- TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
- the content type as defined in the SSL 3.0/TLS 1.0 protocol
- specification (change_cipher_spec(20), alert(21), handshake(22)).
- 'buf' and 'len' point to the actual message, 'ssl' to the
- SSL object, and 'arg' is the application-defined value set by
- SSL[_CTX]_set_msg_callback_arg().
-
- 'openssl s_client' and 'openssl s_server' have new '-msg' options
- to enable a callback that displays all protocol messages.
- [Bodo Moeller]
-
- *) Change the shared library support so shared libraries are built as
- soon as the corresponding static library is finished, and thereby get
- openssl and the test programs linked against the shared library.
- This still only happens when the keyword "shard" has been given to
- the configuration scripts.
-
- NOTE: shared library support is still an experimental thing, and
- backward binary compatibility is still not guaranteed.
- ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
-
- *) Add support for Subject Information Access extension.
- [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
-
- *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
- additional bytes when new memory had to be allocated, not just
- when reusing an existing buffer.
- [Bodo Moeller]
-
- *) New command line and configuration option 'utf8' for the req command.
- This allows field values to be specified as UTF8 strings.
- [Steve Henson]
-
- *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
- runs for the former and machine-readable output for the latter.
- [Ben Laurie]
-
- *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
- of the e-mail address in the DN (i.e., it will go into a certificate
- extension only). The new configuration file option 'email_in_dn = no'
- has the same effect.
- [Massimiliano Pala madwolf@openca.org]
-
- *) Change all functions with names starting with des_ to be starting
- with DES_ instead. Add wrappers that are compatible with libdes,
- but are named _ossl_old_des_*. Finally, add macros that map the
- des_* symbols to the corresponding _ossl_old_des_* if libdes
- compatibility is desired. If OpenSSL 0.9.6c compatibility is
- desired, the des_* symbols will be mapped to DES_*, with one
- exception.
-
- Since we provide two compatibility mappings, the user needs to
- define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
- compatibility is desired. The default (i.e., when that macro
- isn't defined) is OpenSSL 0.9.6c compatibility.
-
- There are also macros that enable and disable the support of old
- des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
- and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
- are defined, the default will apply: to support the old des routines.
-
- In either case, one must include openssl/des.h to get the correct
- definitions. Do not try to just include openssl/des_old.h, that
- won't work.
-
- NOTE: This is a major break of an old API into a new one. Software
- authors are encouraged to switch to the DES_ style functions. Some
- time in the future, des_old.h and the libdes compatibility functions
- will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
- default), and then completely removed.
- [Richard Levitte]
-
- *) Test for certificates which contain unsupported critical extensions.
- If such a certificate is found during a verify operation it is
- rejected by default: this behaviour can be overridden by either
- handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
- by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
- X509_supported_extension() has also been added which returns 1 if a
- particular extension is supported.
- [Steve Henson]
-
- *) Modify the behaviour of EVP cipher functions in similar way to digests
- to retain compatibility with existing code.
- [Steve Henson]
-
- *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
- compatibility with existing code. In particular the 'ctx' parameter does
- not have to be to be initialized before the call to EVP_DigestInit() and
- it is tidied up after a call to EVP_DigestFinal(). New function
- EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
- EVP_MD_CTX_copy() changed to not require the destination to be
- initialized valid and new function EVP_MD_CTX_copy_ex() added which
- requires the destination to be valid.
-
- Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
- EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
- [Steve Henson]
-
- *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
- so that complete 'Handshake' protocol structures are kept in memory
- instead of overwriting 'msg_type' and 'length' with 'body' data.
- [Bodo Moeller]
-
- *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
- [Massimo Santin via Richard Levitte]
-
- *) Major restructuring to the underlying ENGINE code. This includes
- reduction of linker bloat, separation of pure "ENGINE" manipulation
- (initialisation, etc) from functionality dealing with implementations
- of specific crypto interfaces. This change also introduces integrated
- support for symmetric ciphers and digest implementations - so ENGINEs
- can now accelerate these by providing EVP_CIPHER and EVP_MD
- implementations of their own. This is detailed in crypto/engine/README
- as it couldn't be adequately described here. However, there are a few
- API changes worth noting - some RSA, DSA, DH, and RAND functions that
- were changed in the original introduction of ENGINE code have now
- reverted back - the hooking from this code to ENGINE is now a good
- deal more passive and at run-time, operations deal directly with
- RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
- dereferencing through an ENGINE pointer any more. Also, the ENGINE
- functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
- they were not being used by the framework as there is no concept of a
- BIGNUM_METHOD and they could not be generalised to the new
- 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
- ENGINE_cpy() has been removed as it cannot be consistently defined in
- the new code.
- [Geoff Thorpe]
-
- *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
- [Steve Henson]
-
- *) Change mkdef.pl to sort symbols that get the same entry number,
- and make sure the automatically generated functions ERR_load_*
- become part of libeay.num as well.
- [Richard Levitte]
-
- *) New function SSL_renegotiate_pending(). This returns true once
- renegotiation has been requested (either SSL_renegotiate() call
- or HelloRequest/ClientHello received from the peer) and becomes
- false once a handshake has been completed.
- (For servers, SSL_renegotiate() followed by SSL_do_handshake()
- sends a HelloRequest, but does not ensure that a handshake takes
- place. SSL_renegotiate_pending() is useful for checking if the
- client has followed the request.)
- [Bodo Moeller]
-
- *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
- By default, clients may request session resumption even during
- renegotiation (if session ID contexts permit); with this option,
- session resumption is possible only in the first handshake.
-
- SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
- more bits available for options that should not be part of
- SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
- [Bodo Moeller]
-
- *) Add some demos for certificate and certificate request creation.
- [Steve Henson]
-
- *) Make maximum certificate chain size accepted from the peer application
- settable (SSL*_get/set_max_cert_list()), as proposed by
- "Douglas E. Engert" <deengert@anl.gov>.
- [Lutz Jaenicke]
-
- *) Add support for shared libraries for Unixware-7
- (Boyd Lynn Gerber <gerberb@zenez.com>).
- [Lutz Jaenicke]
-
- *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
- be done prior to destruction. Use this to unload error strings from
- ENGINEs that load their own error strings. NB: This adds two new API
- functions to "get" and "set" this destroy handler in an ENGINE.
- [Geoff Thorpe]
-
- *) Alter all existing ENGINE implementations (except "openssl" and
- "openbsd") to dynamically instantiate their own error strings. This
- makes them more flexible to be built both as statically-linked ENGINEs
- and self-contained shared-libraries loadable via the "dynamic" ENGINE.
- Also, add stub code to each that makes building them as self-contained
- shared-libraries easier (see README.ENGINE).
- [Geoff Thorpe]
-
- *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
- implementations into applications that are completely implemented in
- self-contained shared-libraries. The "dynamic" ENGINE exposes control
- commands that can be used to configure what shared-library to load and
- to control aspects of the way it is handled. Also, made an update to
- the README.ENGINE file that brings its information up-to-date and
- provides some information and instructions on the "dynamic" ENGINE
- (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
- [Geoff Thorpe]
-
- *) Make it possible to unload ranges of ERR strings with a new
- "ERR_unload_strings" function.
- [Geoff Thorpe]
-
- *) Add a copy() function to EVP_MD.
- [Ben Laurie]
-
- *) Make EVP_MD routines take a context pointer instead of just the
- md_data void pointer.
- [Ben Laurie]
-
- *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
- that the digest can only process a single chunk of data
- (typically because it is provided by a piece of
- hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
- is only going to provide a single chunk of data, and hence the
- framework needn't accumulate the data for oneshot drivers.
- [Ben Laurie]
-
- *) As with "ERR", make it possible to replace the underlying "ex_data"
- functions. This change also alters the storage and management of global
- ex_data state - it's now all inside ex_data.c and all "class" code (eg.
- RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
- index counters. The API functions that use this state have been changed
- to take a "class_index" rather than pointers to the class's local STACK
- and counter, and there is now an API function to dynamically create new
- classes. This centralisation allows us to (a) plug a lot of the
- thread-safety problems that existed, and (b) makes it possible to clean
- up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
- such data would previously have always leaked in application code and
- workarounds were in place to make the memory debugging turn a blind eye
- to it. Application code that doesn't use this new function will still
- leak as before, but their memory debugging output will announce it now
- rather than letting it slide.
-
- Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
- induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
- has a return value to indicate success or failure.
- [Geoff Thorpe]
-
- *) Make it possible to replace the underlying "ERR" functions such that the
- global state (2 LHASH tables and 2 locks) is only used by the "default"
- implementation. This change also adds two functions to "get" and "set"
- the implementation prior to it being automatically set the first time
- any other ERR function takes place. Ie. an application can call "get",
- pass the return value to a module it has just loaded, and that module
- can call its own "set" function using that value. This means the
- module's "ERR" operations will use (and modify) the error state in the
- application and not in its own statically linked copy of OpenSSL code.
- [Geoff Thorpe]
-
- *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
- reference counts. This performs normal REF_PRINT/REF_CHECK macros on
- the operation, and provides a more encapsulated way for external code
- (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
- to use these functions rather than manually incrementing the counts.
-
- Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
- [Geoff Thorpe]
-
- *) Add EVP test program.
- [Ben Laurie]
-
- *) Add symmetric cipher support to ENGINE. Expect the API to change!
- [Ben Laurie]
-
- *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
- X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
- X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
- These allow a CRL to be built without having to access X509_CRL fields
- directly. Modify 'ca' application to use new functions.
- [Steve Henson]
-
- *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
- bug workarounds. Rollback attack detection is a security feature.
- The problem will only arise on OpenSSL servers when TLSv1 is not
- available (sslv3_server_method() or SSL_OP_NO_TLSv1).
- Software authors not wanting to support TLSv1 will have special reasons
- for their choice and can explicitly enable this option.
- [Bodo Moeller, Lutz Jaenicke]
-
- *) Rationalise EVP so it can be extended: don't include a union of
- cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
- (similar to those existing for EVP_CIPHER_CTX).
- Usage example:
-
- EVP_MD_CTX md;
-
- EVP_MD_CTX_init(&md); /* new function call */
- EVP_DigestInit(&md, EVP_sha1());
- EVP_DigestUpdate(&md, in, len);
- EVP_DigestFinal(&md, out, NULL);
- EVP_MD_CTX_cleanup(&md); /* new function call */
-
- [Ben Laurie]
-
- *) Make DES key schedule conform to the usual scheme, as well as
- correcting its structure. This means that calls to DES functions
- now have to pass a pointer to a des_key_schedule instead of a
- plain des_key_schedule (which was actually always a pointer
- anyway): E.g.,
-
- des_key_schedule ks;
-
- des_set_key_checked(..., &ks);
- des_ncbc_encrypt(..., &ks, ...);
-
- (Note that a later change renames 'des_...' into 'DES_...'.)
- [Ben Laurie]
-
- *) Initial reduction of linker bloat: the use of some functions, such as
- PEM causes large amounts of unused functions to be linked in due to
- poor organisation. For example pem_all.c contains every PEM function
- which has a knock on effect of linking in large amounts of (unused)
- ASN1 code. Grouping together similar functions and splitting unrelated
- functions prevents this.
- [Steve Henson]
-
- *) Cleanup of EVP macros.
- [Ben Laurie]
-
- *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
- correct _ecb suffix.
- [Ben Laurie]
-
- *) Add initial OCSP responder support to ocsp application. The
- revocation information is handled using the text based index
- use by the ca application. The responder can either handle
- requests generated internally, supplied in files (for example
- via a CGI script) or using an internal minimal server.
- [Steve Henson]
-
- *) Add configuration choices to get zlib compression for TLS.
- [Richard Levitte]
-
- *) Changes to Kerberos SSL for RFC 2712 compliance:
- 1. Implemented real KerberosWrapper, instead of just using
- KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
- 2. Implemented optional authenticator field of KerberosWrapper.
-
- Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
- and authenticator structs; see crypto/krb5/.
-
- Generalized Kerberos calls to support multiple Kerberos libraries.
- [Vern Staats <staatsvr@asc.hpc.mil>,
- Jeffrey Altman <jaltman@columbia.edu>
- via Richard Levitte]
-
- *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
- already does with RSA. testdsa.h now has 'priv_key/pub_key'
- values for each of the key sizes rather than having just
- parameters (and 'speed' generating keys each time).
- [Geoff Thorpe]
-
- *) Speed up EVP routines.
- Before:
-encrypt
-type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
-des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
-des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
-des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
-decrypt
-des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
-des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
-des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
- After:
-encrypt
-des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
-decrypt
-des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
- [Ben Laurie]
-
- *) Added the OS2-EMX target.
- ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
-
- *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
- to support NCONF routines in extension code. New function CONF_set_nconf()
- to allow functions which take an NCONF to also handle the old LHASH
- structure: this means that the old CONF compatible routines can be
- retained (in particular wrt extensions) without having to duplicate the
- code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
- [Steve Henson]
-
- *) Enhance the general user interface with mechanisms for inner control
- and with possibilities to have yes/no kind of prompts.
- [Richard Levitte]
-
- *) Change all calls to low level digest routines in the library and
- applications to use EVP. Add missing calls to HMAC_cleanup() and
- don't assume HMAC_CTX can be copied using memcpy().
- [Verdon Walker <VWalker@novell.com>, Steve Henson]
-
- *) Add the possibility to control engines through control names but with
- arbitrary arguments instead of just a string.
- Change the key loaders to take a UI_METHOD instead of a callback
- function pointer. NOTE: this breaks binary compatibility with earlier
- versions of OpenSSL [engine].
- Adapt the nCipher code for these new conditions and add a card insertion
- callback.
- [Richard Levitte]
-
- *) Enhance the general user interface with mechanisms to better support
- dialog box interfaces, application-defined prompts, the possibility
- to use defaults (for example default passwords from somewhere else)
- and interrupts/cancellations.
- [Richard Levitte]
-
- *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
- attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
- [Steve Henson]
-
- *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
- tidy up some unnecessarily weird code in 'sk_new()').
- [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
-
- *) Change the key loading routines for ENGINEs to use the same kind
- callback (pem_password_cb) as all other routines that need this
- kind of callback.
- [Richard Levitte]
-
- *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
- 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
- than this minimum value is recommended.
- [Lutz Jaenicke]
-
- *) New random seeder for OpenVMS, using the system process statistics
- that are easily reachable.
- [Richard Levitte]
-
- *) Windows apparently can't transparently handle global
- variables defined in DLLs. Initialisations such as:
-
- const ASN1_ITEM *it = &ASN1_INTEGER_it;
-
- won't compile. This is used by the any applications that need to
- declare their own ASN1 modules. This was fixed by adding the option
- EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
- needed for static libraries under Win32.
- [Steve Henson]
-
- *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
- setting of purpose and trust fields. New X509_STORE trust and
- purpose functions and tidy up setting in other SSL functions.
- [Steve Henson]
-
- *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
- structure. These are inherited by X509_STORE_CTX when it is
- initialised. This allows various defaults to be set in the
- X509_STORE structure (such as flags for CRL checking and custom
- purpose or trust settings) for functions which only use X509_STORE_CTX
- internally such as S/MIME.
-
- Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
- trust settings if they are not set in X509_STORE. This allows X509_STORE
- purposes and trust (in S/MIME for example) to override any set by default.
-
- Add command line options for CRL checking to smime, s_client and s_server
- applications.
- [Steve Henson]
-
- *) Initial CRL based revocation checking. If the CRL checking flag(s)
- are set then the CRL is looked up in the X509_STORE structure and
- its validity and signature checked, then if the certificate is found
- in the CRL the verify fails with a revoked error.
-
- Various new CRL related callbacks added to X509_STORE_CTX structure.
-
- Command line options added to 'verify' application to support this.
-
- This needs some additional work, such as being able to handle multiple
- CRLs with different times, extension based lookup (rather than just
- by subject name) and ultimately more complete V2 CRL extension
- handling.
- [Steve Henson]
-
- *) Add a general user interface API (crypto/ui/). This is designed
- to replace things like des_read_password and friends (backward
- compatibility functions using this new API are provided).
- The purpose is to remove prompting functions from the DES code
- section as well as provide for prompting through dialog boxes in
- a window system and the like.
- [Richard Levitte]
-
- *) Add "ex_data" support to ENGINE so implementations can add state at a
- per-structure level rather than having to store it globally.
- [Geoff]
-
- *) Make it possible for ENGINE structures to be copied when retrieved by
- ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
- This causes the "original" ENGINE structure to act like a template,
- analogous to the RSA vs. RSA_METHOD type of separation. Because of this
- operational state can be localised to each ENGINE structure, despite the
- fact they all share the same "methods". New ENGINE structures returned in
- this case have no functional references and the return value is the single
- structural reference. This matches the single structural reference returned
- by ENGINE_by_id() normally, when it is incremented on the pre-existing
- ENGINE structure.
- [Geoff]
-
- *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
- needs to match any other type at all we need to manually clear the
- tag cache.
- [Steve Henson]
-
- *) Changes to the "openssl engine" utility to include;
- - verbosity levels ('-v', '-vv', and '-vvv') that provide information
- about an ENGINE's available control commands.
- - executing control commands from command line arguments using the
- '-pre' and '-post' switches. '-post' is only used if '-t' is
- specified and the ENGINE is successfully initialised. The syntax for
- the individual commands are colon-separated, for example;
- openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
- [Geoff]
-
- *) New dynamic control command support for ENGINEs. ENGINEs can now
- declare their own commands (numbers), names (strings), descriptions,
- and input types for run-time discovery by calling applications. A
- subset of these commands are implicitly classed as "executable"
- depending on their input type, and only these can be invoked through
- the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
- can be based on user input, config files, etc). The distinction is
- that "executable" commands cannot return anything other than a boolean
- result and can only support numeric or string input, whereas some
- discoverable commands may only be for direct use through
- ENGINE_ctrl(), eg. supporting the exchange of binary data, function
- pointers, or other custom uses. The "executable" commands are to
- support parameterisations of ENGINE behaviour that can be
- unambiguously defined by ENGINEs and used consistently across any
- OpenSSL-based application. Commands have been added to all the
- existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
- control over shared-library paths without source code alterations.
- [Geoff]
-
- *) Changed all ENGINE implementations to dynamically allocate their
- ENGINEs rather than declaring them statically. Apart from this being
- necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
- this also allows the implementations to compile without using the
- internal engine_int.h header.
- [Geoff]
-
- *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
- 'const' value. Any code that should be able to modify a RAND_METHOD
- should already have non-const pointers to it (ie. they should only
- modify their own ones).
- [Geoff]
-
- *) Made a variety of little tweaks to the ENGINE code.
- - "atalla" and "ubsec" string definitions were moved from header files
- to C code. "nuron" string definitions were placed in variables
- rather than hard-coded - allowing parameterisation of these values
- later on via ctrl() commands.
- - Removed unused "#if 0"'d code.
- - Fixed engine list iteration code so it uses ENGINE_free() to release
- structural references.
- - Constified the RAND_METHOD element of ENGINE structures.
- - Constified various get/set functions as appropriate and added
- missing functions (including a catch-all ENGINE_cpy that duplicates
- all ENGINE values onto a new ENGINE except reference counts/state).
- - Removed NULL parameter checks in get/set functions. Setting a method
- or function to NULL is a way of cancelling out a previously set
- value. Passing a NULL ENGINE parameter is just plain stupid anyway
- and doesn't justify the extra error symbols and code.
- - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
- flags from engine_int.h to engine.h.
- - Changed prototypes for ENGINE handler functions (init(), finish(),
- ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
- [Geoff]
-
- *) Implement binary inversion algorithm for BN_mod_inverse in addition
- to the algorithm using long division. The binary algorithm can be
- used only if the modulus is odd. On 32-bit systems, it is faster
- only for relatively small moduli (roughly 20-30% for 128-bit moduli,
- roughly 5-15% for 256-bit moduli), so we use it only for moduli
- up to 450 bits. In 64-bit environments, the binary algorithm
- appears to be advantageous for much longer moduli; here we use it
- for moduli up to 2048 bits.
- [Bodo Moeller]
-
- *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
- could not support the combine flag in choice fields.
- [Steve Henson]
-
- *) Add a 'copy_extensions' option to the 'ca' utility. This copies
- extensions from a certificate request to the certificate.
- [Steve Henson]
-
- *) Allow multiple 'certopt' and 'nameopt' options to be separated
- by commas. Add 'namopt' and 'certopt' options to the 'ca' config
- file: this allows the display of the certificate about to be
- signed to be customised, to allow certain fields to be included
- or excluded and extension details. The old system didn't display
- multicharacter strings properly, omitted fields not in the policy
- and couldn't display additional details such as extensions.
- [Steve Henson]
-
- *) Function EC_POINTs_mul for multiple scalar multiplication
- of an arbitrary number of elliptic curve points
- \sum scalars[i]*points[i],
- optionally including the generator defined for the EC_GROUP:
- scalar*generator + \sum scalars[i]*points[i].
-
- EC_POINT_mul is a simple wrapper function for the typical case
- that the point list has just one item (besides the optional
- generator).
- [Bodo Moeller]
-
- *) First EC_METHODs for curves over GF(p):
-
- EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
- operations and provides various method functions that can also
- operate with faster implementations of modular arithmetic.
-
- EC_GFp_mont_method() reuses most functions that are part of
- EC_GFp_simple_method, but uses Montgomery arithmetic.
-
- [Bodo Moeller; point addition and point doubling
- implementation directly derived from source code provided by
- Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
-
- *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
- crypto/ec/ec_lib.c):
-
- Curves are EC_GROUP objects (with an optional group generator)
- based on EC_METHODs that are built into the library.
-
- Points are EC_POINT objects based on EC_GROUP objects.
-
- Most of the framework would be able to handle curves over arbitrary
- finite fields, but as there are no obvious types for fields other
- than GF(p), some functions are limited to that for now.
- [Bodo Moeller]
-
- *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
- that the file contains a complete HTTP response.
- [Richard Levitte]
-
- *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
- change the def and num file printf format specifier from "%-40sXXX"
- to "%-39s XXX". The latter will always guarantee a space after the
- field while the former will cause them to run together if the field
- is 40 of more characters long.
- [Steve Henson]
-
- *) Constify the cipher and digest 'method' functions and structures
- and modify related functions to take constant EVP_MD and EVP_CIPHER
- pointers.
- [Steve Henson]
-
- *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
- in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
- [Bodo Moeller]
-
- *) Modify EVP_Digest*() routines so they now return values. Although the
- internal software routines can never fail additional hardware versions
- might.
- [Steve Henson]
-
- *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
-
- Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
- (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
-
- ASN1 error codes
- ERR_R_NESTED_ASN1_ERROR
- ...
- ERR_R_MISSING_ASN1_EOS
- were 4 .. 9, conflicting with
- ERR_LIB_RSA (= ERR_R_RSA_LIB)
- ...
- ERR_LIB_PEM (= ERR_R_PEM_LIB).
- They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
-
- Add new error code 'ERR_R_INTERNAL_ERROR'.
- [Bodo Moeller]
-
- *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
- suffices.
- [Bodo Moeller]
-
- *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
- sets the subject name for a new request or supersedes the
- subject name in a given request. Formats that can be parsed are
- 'CN=Some Name, OU=myOU, C=IT'
- and
- 'CN=Some Name/OU=myOU/C=IT'.
-
- Add options '-batch' and '-verbose' to 'openssl req'.
- [Massimiliano Pala <madwolf@hackmasters.net>]
-
- *) Introduce the possibility to access global variables through
- functions on platform were that's the best way to handle exporting
- global variables in shared libraries. To enable this functionality,
- one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
- "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
- is normally done by Configure or something similar).
-
- To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
- in the source file (foo.c) like this:
-
- OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
- OPENSSL_IMPLEMENT_GLOBAL(double,bar);
-
- To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
- and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
-
- OPENSSL_DECLARE_GLOBAL(int,foo);
- #define foo OPENSSL_GLOBAL_REF(foo)
- OPENSSL_DECLARE_GLOBAL(double,bar);
- #define bar OPENSSL_GLOBAL_REF(bar)
-
- The #defines are very important, and therefore so is including the
- header file everywhere where the defined globals are used.
-
- The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
- of ASN.1 items, but that structure is a bit different.
-
- The largest change is in util/mkdef.pl which has been enhanced with
- better and easier to understand logic to choose which symbols should
- go into the Windows .def files as well as a number of fixes and code
- cleanup (among others, algorithm keywords are now sorted
- lexicographically to avoid constant rewrites).
- [Richard Levitte]
-
- *) In BN_div() keep a copy of the sign of 'num' before writing the
- result to 'rm' because if rm==num the value will be overwritten
- and produce the wrong result if 'num' is negative: this caused
- problems with BN_mod() and BN_nnmod().
- [Steve Henson]
-
- *) Function OCSP_request_verify(). This checks the signature on an
- OCSP request and verifies the signer certificate. The signer
- certificate is just checked for a generic purpose and OCSP request
- trust settings.
- [Steve Henson]
-
- *) Add OCSP_check_validity() function to check the validity of OCSP
- responses. OCSP responses are prepared in real time and may only
- be a few seconds old. Simply checking that the current time lies
- between thisUpdate and nextUpdate max reject otherwise valid responses
- caused by either OCSP responder or client clock inaccuracy. Instead
- we allow thisUpdate and nextUpdate to fall within a certain period of
- the current time. The age of the response can also optionally be
- checked. Two new options -validity_period and -status_age added to
- ocsp utility.
- [Steve Henson]
-
- *) If signature or public key algorithm is unrecognized print out its
- OID rather that just UNKNOWN.
- [Steve Henson]
-
- *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
- OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
- ID to be generated from the issuer certificate alone which can then be
- passed to OCSP_id_issuer_cmp().
- [Steve Henson]
-
- *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
- ASN1 modules to export functions returning ASN1_ITEM pointers
- instead of the ASN1_ITEM structures themselves. This adds several
- new macros which allow the underlying ASN1 function/structure to
- be accessed transparently. As a result code should not use ASN1_ITEM
- references directly (such as &X509_it) but instead use the relevant
- macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
- use of the new ASN1 code on platforms where exporting structures
- is problematical (for example in shared libraries) but exporting
- functions returning pointers to structures is not.
- [Steve Henson]
-
- *) Add support for overriding the generation of SSL/TLS session IDs.
- These callbacks can be registered either in an SSL_CTX or per SSL.
- The purpose of this is to allow applications to control, if they wish,
- the arbitrary values chosen for use as session IDs, particularly as it
- can be useful for session caching in multiple-server environments. A
- command-line switch for testing this (and any client code that wishes
- to use such a feature) has been added to "s_server".
- [Geoff Thorpe, Lutz Jaenicke]
-
- *) Modify mkdef.pl to recognise and parse preprocessor conditionals
- of the form '#if defined(...) || defined(...) || ...' and
- '#if !defined(...) && !defined(...) && ...'. This also avoids
- the growing number of special cases it was previously handling.
- [Richard Levitte]
-
- *) Make all configuration macros available for application by making
- sure they are available in opensslconf.h, by giving them names starting
- with "OPENSSL_" to avoid conflicts with other packages and by making
- sure e_os2.h will cover all platform-specific cases together with
- opensslconf.h.
- Additionally, it is now possible to define configuration/platform-
- specific names (called "system identities"). In the C code, these
- are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
- macro with the name beginning with "OPENSSL_SYS_", which is determined
- from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
- what is available.
- [Richard Levitte]
-
- *) New option -set_serial to 'req' and 'x509' this allows the serial
- number to use to be specified on the command line. Previously self
- signed certificates were hard coded with serial number 0 and the
- CA options of 'x509' had to use a serial number in a file which was
- auto incremented.
- [Steve Henson]
-
- *) New options to 'ca' utility to support V2 CRL entry extensions.
- Currently CRL reason, invalidity date and hold instruction are
- supported. Add new CRL extensions to V3 code and some new objects.
- [Steve Henson]
-
- *) New function EVP_CIPHER_CTX_set_padding() this is used to
- disable standard block padding (aka PKCS#5 padding) in the EVP
- API, which was previously mandatory. This means that the data is
- not padded in any way and so the total length much be a multiple
- of the block size, otherwise an error occurs.
- [Steve Henson]
-
- *) Initial (incomplete) OCSP SSL support.
- [Steve Henson]
-
- *) New function OCSP_parse_url(). This splits up a URL into its host,
- port and path components: primarily to parse OCSP URLs. New -url
- option to ocsp utility.
- [Steve Henson]
-
- *) New nonce behavior. The return value of OCSP_check_nonce() now
- reflects the various checks performed. Applications can decide
- whether to tolerate certain situations such as an absent nonce
- in a response when one was present in a request: the ocsp application
- just prints out a warning. New function OCSP_add1_basic_nonce()
- this is to allow responders to include a nonce in a response even if
- the request is nonce-less.
- [Steve Henson]
-
- *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
- skipped when using openssl x509 multiple times on a single input file,
- e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
- [Bodo Moeller]
-
- *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
- set string type: to handle setting ASN1_TIME structures. Fix ca
- utility to correctly initialize revocation date of CRLs.
- [Steve Henson]
-
- *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
- the clients preferred ciphersuites and rather use its own preferences.
- Should help to work around M$ SGC (Server Gated Cryptography) bug in
- Internet Explorer by ensuring unchanged hash method during stepup.
- (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
- [Lutz Jaenicke]
-
- *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
- to aes and add a new 'exist' option to print out symbols that don't
- appear to exist.
- [Steve Henson]
-
- *) Additional options to ocsp utility to allow flags to be set and
- additional certificates supplied.
- [Steve Henson]
-
- *) Add the option -VAfile to 'openssl ocsp', so the user can give the
- OCSP client a number of certificate to only verify the response
- signature against.
- [Richard Levitte]
-
- *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
- handle the new API. Currently only ECB, CBC modes supported. Add new
- AES OIDs.
-
- Add TLS AES ciphersuites as described in RFC3268, "Advanced
- Encryption Standard (AES) Ciphersuites for Transport Layer
- Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
- not enabled by default and were not part of the "ALL" ciphersuite
- alias because they were not yet official; they could be
- explicitly requested by specifying the "AESdraft" ciphersuite
- group alias. In the final release of OpenSSL 0.9.7, the group
- alias is called "AES" and is part of "ALL".)
- [Ben Laurie, Steve Henson, Bodo Moeller]
-
- *) New function OCSP_copy_nonce() to copy nonce value (if present) from
- request to response.
- [Steve Henson]
-
- *) Functions for OCSP responders. OCSP_request_onereq_count(),
- OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
- extract information from a certificate request. OCSP_response_create()
- creates a response and optionally adds a basic response structure.
- OCSP_basic_add1_status() adds a complete single response to a basic
- response and returns the OCSP_SINGLERESP structure just added (to allow
- extensions to be included for example). OCSP_basic_add1_cert() adds a
- certificate to a basic response and OCSP_basic_sign() signs a basic
- response with various flags. New helper functions ASN1_TIME_check()
- (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
- (converts ASN1_TIME to GeneralizedTime).
- [Steve Henson]
-
- *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
- in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
- structure from a certificate. X509_pubkey_digest() digests the public_key
- contents: this is used in various key identifiers.
- [Steve Henson]
-
- *) Make sk_sort() tolerate a NULL argument.
- [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
-
- *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
- passed by the function are trusted implicitly. If any of them signed the
- response then it is assumed to be valid and is not verified.
- [Steve Henson]
-
- *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
- to data. This was previously part of the PKCS7 ASN1 code. This
- was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
- [Steve Henson, reported by Kenneth R. Robinette
- <support@securenetterm.com>]
-
- *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
- routines: without these tracing memory leaks is very painful.
- Fix leaks in PKCS12 and PKCS7 routines.
- [Steve Henson]
-
- *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
- Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
- effectively meant GeneralizedTime would never be used. Now it
- is initialised to -1 but X509_time_adj() now has to check the value
- and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
- V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
- [Steve Henson, reported by Kenneth R. Robinette
- <support@securenetterm.com>]
-
- *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
- result in a zero length in the ASN1_INTEGER structure which was
- not consistent with the structure when d2i_ASN1_INTEGER() was used
- and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
- to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
- where it did not print out a minus for negative ASN1_INTEGER.
- [Steve Henson]
-
- *) Add summary printout to ocsp utility. The various functions which
- convert status values to strings have been renamed to:
- OCSP_response_status_str(), OCSP_cert_status_str() and
- OCSP_crl_reason_str() and are no longer static. New options
- to verify nonce values and to disable verification. OCSP response
- printout format cleaned up.
- [Steve Henson]
-
- *) Add additional OCSP certificate checks. These are those specified
- in RFC2560. This consists of two separate checks: the CA of the
- certificate being checked must either be the OCSP signer certificate
- or the issuer of the OCSP signer certificate. In the latter case the
- OCSP signer certificate must contain the OCSP signing extended key
- usage. This check is performed by attempting to match the OCSP
- signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
- in the OCSP_CERTID structures of the response.
- [Steve Henson]
-
- *) Initial OCSP certificate verification added to OCSP_basic_verify()
- and related routines. This uses the standard OpenSSL certificate
- verify routines to perform initial checks (just CA validity) and
- to obtain the certificate chain. Then additional checks will be
- performed on the chain. Currently the root CA is checked to see
- if it is explicitly trusted for OCSP signing. This is used to set
- a root CA as a global signing root: that is any certificate that
- chains to that CA is an acceptable OCSP signing certificate.
- [Steve Henson]
-
- *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
- extensions from a separate configuration file.
- As when reading extensions from the main configuration file,
- the '-extensions ...' option may be used for specifying the
- section to use.
- [Massimiliano Pala <madwolf@comune.modena.it>]
-
- *) New OCSP utility. Allows OCSP requests to be generated or
- read. The request can be sent to a responder and the output
- parsed, outputted or printed in text form. Not complete yet:
- still needs to check the OCSP response validity.
- [Steve Henson]
-
- *) New subcommands for 'openssl ca':
- 'openssl ca -status <serial>' prints the status of the cert with
- the given serial number (according to the index file).
- 'openssl ca -updatedb' updates the expiry status of certificates
- in the index file.
- [Massimiliano Pala <madwolf@comune.modena.it>]
-
- *) New '-newreq-nodes' command option to CA.pl. This is like
- '-newreq', but calls 'openssl req' with the '-nodes' option
- so that the resulting key is not encrypted.
- [Damien Miller <djm@mindrot.org>]
-
- *) New configuration for the GNU Hurd.
- [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
-
- *) Initial code to implement OCSP basic response verify. This
- is currently incomplete. Currently just finds the signer's
- certificate and verifies the signature on the response.
- [Steve Henson]
-
- *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
- value of OPENSSLDIR. This is available via the new '-d' option
- to 'openssl version', and is also included in 'openssl version -a'.
- [Bodo Moeller]
-
- *) Allowing defining memory allocation callbacks that will be given
- file name and line number information in additional arguments
- (a const char* and an int). The basic functionality remains, as
- well as the original possibility to just replace malloc(),
- realloc() and free() by functions that do not know about these
- additional arguments. To register and find out the current
- settings for extended allocation functions, the following
- functions are provided:
-
- CRYPTO_set_mem_ex_functions
- CRYPTO_set_locked_mem_ex_functions
- CRYPTO_get_mem_ex_functions
- CRYPTO_get_locked_mem_ex_functions
-
- These work the same way as CRYPTO_set_mem_functions and friends.
- CRYPTO_get_[locked_]mem_functions now writes 0 where such an
- extended allocation function is enabled.
- Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
- a conventional allocation function is enabled.
- [Richard Levitte, Bodo Moeller]
-
- *) Finish off removing the remaining LHASH function pointer casts.
- There should no longer be any prototype-casting required when using
- the LHASH abstraction, and any casts that remain are "bugs". See
- the callback types and macros at the head of lhash.h for details
- (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
- [Geoff Thorpe]
-
- *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
- If /dev/[u]random devices are not available or do not return enough
- entropy, EGD style sockets (served by EGD or PRNGD) will automatically
- be queried.
- The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
- /etc/entropy will be queried once each in this sequence, querying stops
- when enough entropy was collected without querying more sockets.
- [Lutz Jaenicke]
-
- *) Change the Unix RAND_poll() variant to be able to poll several
- random devices, as specified by DEVRANDOM, until a sufficient amount
- of data has been collected. We spend at most 10 ms on each file
- (select timeout) and read in non-blocking mode. DEVRANDOM now
- defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
- (previously it was just the string "/dev/urandom"), so on typical
- platforms the 10 ms delay will never occur.
- Also separate out the Unix variant to its own file, rand_unix.c.
- For VMS, there's a currently-empty rand_vms.c.
- [Richard Levitte]
-
- *) Move OCSP client related routines to ocsp_cl.c. These
- provide utility functions which an application needing
- to issue a request to an OCSP responder and analyse the
- response will typically need: as opposed to those which an
- OCSP responder itself would need which will be added later.
-
- OCSP_request_sign() signs an OCSP request with an API similar
- to PKCS7_sign(). OCSP_response_status() returns status of OCSP
- response. OCSP_response_get1_basic() extracts basic response
- from response. OCSP_resp_find_status(): finds and extracts status
- information from an OCSP_CERTID structure (which will be created
- when the request structure is built). These are built from lower
- level functions which work on OCSP_SINGLERESP structures but
- won't normally be used unless the application wishes to examine
- extensions in the OCSP response for example.
-
- Replace nonce routines with a pair of functions.
- OCSP_request_add1_nonce() adds a nonce value and optionally
- generates a random value. OCSP_check_nonce() checks the
- validity of the nonce in an OCSP response.
- [Steve Henson]
-
- *) Change function OCSP_request_add() to OCSP_request_add0_id().
- This doesn't copy the supplied OCSP_CERTID and avoids the
- need to free up the newly created id. Change return type
- to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
- This can then be used to add extensions to the request.
- Deleted OCSP_request_new(), since most of its functionality
- is now in OCSP_REQUEST_new() (and the case insensitive name
- clash) apart from the ability to set the request name which
- will be added elsewhere.
- [Steve Henson]
-
- *) Update OCSP API. Remove obsolete extensions argument from
- various functions. Extensions are now handled using the new
- OCSP extension code. New simple OCSP HTTP function which
- can be used to send requests and parse the response.
- [Steve Henson]
-
- *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
- ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
- uses the special reorder version of SET OF to sort the attributes
- and reorder them to match the encoded order. This resolves a long
- standing problem: a verify on a PKCS7 structure just after signing
- it used to fail because the attribute order did not match the
- encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
- it uses the received order. This is necessary to tolerate some broken
- software that does not order SET OF. This is handled by encoding
- as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
- to produce the required SET OF.
- [Steve Henson]
-
- *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
- OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
- files to get correct declarations of the ASN.1 item variables.
- [Richard Levitte]
-
- *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
- PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
- asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
- NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
- New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
- ASN1_ITEM and no wrapper functions.
- [Steve Henson]
-
- *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
- replace the old function pointer based I/O routines. Change most of
- the *_d2i_bio() and *_d2i_fp() functions to use these.
- [Steve Henson]
-
- *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
- lines, recognize more "algorithms" that can be deselected, and make
- it complain about algorithm deselection that isn't recognised.
- [Richard Levitte]
-
- *) New ASN1 functions to handle dup, sign, verify, digest, pack and
- unpack operations in terms of ASN1_ITEM. Modify existing wrappers
- to use new functions. Add NO_ASN1_OLD which can be set to remove
- some old style ASN1 functions: this can be used to determine if old
- code will still work when these eventually go away.
- [Steve Henson]
-
- *) New extension functions for OCSP structures, these follow the
- same conventions as certificates and CRLs.
- [Steve Henson]
-
- *) New function X509V3_add1_i2d(). This automatically encodes and
- adds an extension. Its behaviour can be customised with various
- flags to append, replace or delete. Various wrappers added for
- certificates and CRLs.
- [Steve Henson]
-
- *) Fix to avoid calling the underlying ASN1 print routine when
- an extension cannot be parsed. Correct a typo in the
- OCSP_SERVICELOC extension. Tidy up print OCSP format.
- [Steve Henson]
-
- *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
- entries for variables.
- [Steve Henson]
-
- *) Add functionality to apps/openssl.c for detecting locking
- problems: As the program is single-threaded, all we have
- to do is register a locking callback using an array for
- storing which locks are currently held by the program.
- [Bodo Moeller]
-
- *) Use a lock around the call to CRYPTO_get_ex_new_index() in
- SSL_get_ex_data_X509_STORE_idx(), which is used in
- ssl_verify_cert_chain() and thus can be called at any time
- during TLS/SSL handshakes so that thread-safety is essential.
- Unfortunately, the ex_data design is not at all suited
- for multi-threaded use, so it probably should be abolished.
- [Bodo Moeller]
-
- *) Added Broadcom "ubsec" ENGINE to OpenSSL.
- [Broadcom, tweaked and integrated by Geoff Thorpe]
-
- *) Move common extension printing code to new function
- X509V3_print_extensions(). Reorganise OCSP print routines and
- implement some needed OCSP ASN1 functions. Add OCSP extensions.
- [Steve Henson]
-
- *) New function X509_signature_print() to remove duplication in some
- print routines.
- [Steve Henson]
-
- *) Add a special meaning when SET OF and SEQUENCE OF flags are both
- set (this was treated exactly the same as SET OF previously). This
- is used to reorder the STACK representing the structure to match the
- encoding. This will be used to get round a problem where a PKCS7
- structure which was signed could not be verified because the STACK
- order did not reflect the encoded order.
- [Steve Henson]
-
- *) Reimplement the OCSP ASN1 module using the new code.
- [Steve Henson]
-
- *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
- for its ASN1 operations. The old style function pointers still exist
- for now but they will eventually go away.
- [Steve Henson]
-
- *) Merge in replacement ASN1 code from the ASN1 branch. This almost
- completely replaces the old ASN1 functionality with a table driven
- encoder and decoder which interprets an ASN1_ITEM structure describing
- the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
- largely maintained. Almost all of the old asn1_mac.h macro based ASN1
- has also been converted to the new form.
- [Steve Henson]
-
- *) Change BN_mod_exp_recp so that negative moduli are tolerated
- (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
- so that BN_mod_exp_mont and BN_mod_exp_mont_word work
- for negative moduli.
- [Bodo Moeller]
-
- *) Fix BN_uadd and BN_usub: Always return non-negative results instead
- of not touching the result's sign bit.
- [Bodo Moeller]
-
- *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
- set.
- [Bodo Moeller]
-
- *) Changed the LHASH code to use prototypes for callbacks, and created
- macros to declare and implement thin (optionally static) functions
- that provide type-safety and avoid function pointer casting for the
- type-specific callbacks.
- [Geoff Thorpe]
-
- *) Added Kerberos Cipher Suites to be used with TLS, as written in
- RFC 2712.
- [Veers Staats <staatsvr@asc.hpc.mil>,
- Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
-
- *) Reformat the FAQ so the different questions and answers can be divided
- in sections depending on the subject.
- [Richard Levitte]
-
- *) Have the zlib compression code load ZLIB.DLL dynamically under
- Windows.
- [Richard Levitte]
-
- *) New function BN_mod_sqrt for computing square roots modulo a prime
- (using the probabilistic Tonelli-Shanks algorithm unless
- p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
- be handled deterministically).
- [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
-
- *) Make BN_mod_inverse faster by explicitly handling small quotients
- in the Euclid loop. (Speed gain about 20% for small moduli [256 or
- 512 bits], about 30% for larger ones [1024 or 2048 bits].)
- [Bodo Moeller]
-
- *) New function BN_kronecker.
- [Bodo Moeller]
-
- *) Fix BN_gcd so that it works on negative inputs; the result is
- positive unless both parameters are zero.
- Previously something reasonably close to an infinite loop was
- possible because numbers could be growing instead of shrinking
- in the implementation of Euclid's algorithm.
- [Bodo Moeller]
-
- *) Fix BN_is_word() and BN_is_one() macros to take into account the
- sign of the number in question.
-
- Fix BN_is_word(a,w) to work correctly for w == 0.
-
- The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
- because its test if the absolute value of 'a' equals 'w'.
- Note that BN_abs_is_word does *not* handle w == 0 reliably;
- it exists mostly for use in the implementations of BN_is_zero(),
- BN_is_one(), and BN_is_word().
- [Bodo Moeller]
-
- *) New function BN_swap.
- [Bodo Moeller]
-
- *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
- the exponentiation functions are more likely to produce reasonable
- results on negative inputs.
- [Bodo Moeller]
-
- *) Change BN_mod_mul so that the result is always non-negative.
- Previously, it could be negative if one of the factors was negative;
- I don't think anyone really wanted that behaviour.
- [Bodo Moeller]
-
- *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
- (except for exponentiation, which stays in crypto/bn/bn_exp.c,
- and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
- and add new functions:
-
- BN_nnmod
- BN_mod_sqr
- BN_mod_add
- BN_mod_add_quick
- BN_mod_sub
- BN_mod_sub_quick
- BN_mod_lshift1
- BN_mod_lshift1_quick
- BN_mod_lshift
- BN_mod_lshift_quick
-
- These functions always generate non-negative results.
-
- BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
- such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
-
- BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
- BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
- be reduced modulo m.
- [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
-
-#if 0
- The following entry accidentally appeared in the CHANGES file
- distributed with OpenSSL 0.9.7. The modifications described in
- it do *not* apply to OpenSSL 0.9.7.
-
- *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
- was actually never needed) and in BN_mul(). The removal in BN_mul()
- required a small change in bn_mul_part_recursive() and the addition
- of the functions bn_cmp_part_words(), bn_sub_part_words() and
- bn_add_part_words(), which do the same thing as bn_cmp_words(),
- bn_sub_words() and bn_add_words() except they take arrays with
- differing sizes.
- [Richard Levitte]
-#endif
-
- *) In 'openssl passwd', verify passwords read from the terminal
- unless the '-salt' option is used (which usually means that
- verification would just waste user's time since the resulting
- hash is going to be compared with some given password hash)
- or the new '-noverify' option is used.
-
- This is an incompatible change, but it does not affect
- non-interactive use of 'openssl passwd' (passwords on the command
- line, '-stdin' option, '-in ...' option) and thus should not
- cause any problems.
- [Bodo Moeller]
-
- *) Remove all references to RSAref, since there's no more need for it.
- [Richard Levitte]
-
- *) Make DSO load along a path given through an environment variable
- (SHLIB_PATH) with shl_load().
- [Richard Levitte]
-
- *) Constify the ENGINE code as a result of BIGNUM constification.
- Also constify the RSA code and most things related to it. In a
- few places, most notable in the depth of the ASN.1 code, ugly
- casts back to non-const were required (to be solved at a later
- time)
- [Richard Levitte]
-
- *) Make it so the openssl application has all engines loaded by default.
- [Richard Levitte]
-
- *) Constify the BIGNUM routines a little more.
- [Richard Levitte]
-
- *) Add the following functions:
-
- ENGINE_load_cswift()
- ENGINE_load_chil()
- ENGINE_load_atalla()
- ENGINE_load_nuron()
- ENGINE_load_builtin_engines()
-
- That way, an application can itself choose if external engines that
- are built-in in OpenSSL shall ever be used or not. The benefit is
- that applications won't have to be linked with libdl or other dso
- libraries unless it's really needed.
-
- Changed 'openssl engine' to load all engines on demand.
- Changed the engine header files to avoid the duplication of some
- declarations (they differed!).
- [Richard Levitte]
-
- *) 'openssl engine' can now list capabilities.
- [Richard Levitte]
-
- *) Better error reporting in 'openssl engine'.
- [Richard Levitte]
-
- *) Never call load_dh_param(NULL) in s_server.
- [Bodo Moeller]
-
- *) Add engine application. It can currently list engines by name and
- identity, and test if they are actually available.
- [Richard Levitte]
-
- *) Improve RPM specification file by forcing symbolic linking and making
- sure the installed documentation is also owned by root.root.
- [Damien Miller <djm@mindrot.org>]
-
- *) Give the OpenSSL applications more possibilities to make use of
- keys (public as well as private) handled by engines.
- [Richard Levitte]
-
- *) Add OCSP code that comes from CertCo.
- [Richard Levitte]
-
- *) Add VMS support for the Rijndael code.
- [Richard Levitte]
-
- *) Added untested support for Nuron crypto accelerator.
- [Ben Laurie]
-
- *) Add support for external cryptographic devices. This code was
- previously distributed separately as the "engine" branch.
- [Geoff Thorpe, Richard Levitte]
-
- *) Rework the filename-translation in the DSO code. It is now possible to
- have far greater control over how a "name" is turned into a filename
- depending on the operating environment and any oddities about the
- different shared library filenames on each system.
- [Geoff Thorpe]
-
- *) Support threads on FreeBSD-elf in Configure.
- [Richard Levitte]
-
- *) Fix for SHA1 assembly problem with MASM: it produces
- warnings about corrupt line number information when assembling
- with debugging information. This is caused by the overlapping
- of two sections.
- [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
-
- *) NCONF changes.
- NCONF_get_number() has no error checking at all. As a replacement,
- NCONF_get_number_e() is defined (_e for "error checking") and is
- promoted strongly. The old NCONF_get_number is kept around for
- binary backward compatibility.
- Make it possible for methods to load from something other than a BIO,
- by providing a function pointer that is given a name instead of a BIO.
- For example, this could be used to load configuration data from an
- LDAP server.
- [Richard Levitte]
-
- *) Fix for non blocking accept BIOs. Added new I/O special reason
- BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
- with non blocking I/O was not possible because no retry code was
- implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
- this case.
- [Steve Henson]
-
- *) Added the beginnings of Rijndael support.
- [Ben Laurie]
-
- *) Fix for bug in DirectoryString mask setting. Add support for
- X509_NAME_print_ex() in 'req' and X509_print_ex() function
- to allow certificate printing to more controllable, additional
- 'certopt' option to 'x509' to allow new printing options to be
- set.
- [Steve Henson]
-
- *) Clean old EAY MD5 hack from e_os.h.
- [Richard Levitte]
-
- Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
-
- *) Fix null-pointer assignment in do_change_cipher_spec() revealed
- by using the Codenomicon TLS Test Tool (CVE-2004-0079)
- [Joe Orton, Steve Henson]
-
- Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
-
- *) Fix additional bug revealed by the NISCC test suite:
-
- Stop bug triggering large recursion when presented with
- certain ASN.1 tags (CVE-2003-0851)
- [Steve Henson]
-
- Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
-
- *) Fix various bugs revealed by running the NISCC test suite:
-
- Stop out of bounds reads in the ASN1 code when presented with
- invalid tags (CVE-2003-0543 and CVE-2003-0544).
-
- If verify callback ignores invalid public key errors don't try to check
- certificate signature with the NULL public key.
-
- [Steve Henson]
-
- *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
- if the server requested one: as stated in TLS 1.0 and SSL 3.0
- specifications.
- [Steve Henson]
-
- *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
- extra data after the compression methods not only for TLS 1.0
- but also for SSL 3.0 (as required by the specification).
- [Bodo Moeller; problem pointed out by Matthias Loepfe]
-
- *) Change X509_certificate_type() to mark the key as exported/exportable
- when it's 512 *bits* long, not 512 bytes.
- [Richard Levitte]
-
- Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
-
- *) Countermeasure against the Klima-Pokorny-Rosa extension of
- Bleichbacher's attack on PKCS #1 v1.5 padding: treat
- a protocol version number mismatch like a decryption error
- in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
- [Bodo Moeller]
-
- *) Turn on RSA blinding by default in the default implementation
- to avoid a timing attack. Applications that don't want it can call
- RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
- They would be ill-advised to do so in most cases.
- [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
-
- *) Change RSA blinding code so that it works when the PRNG is not
- seeded (in this case, the secret RSA exponent is abused as
- an unpredictable seed -- if it is not unpredictable, there
- is no point in blinding anyway). Make RSA blinding thread-safe
- by remembering the creator's thread ID in rsa->blinding and
- having all other threads use local one-time blinding factors
- (this requires more computation than sharing rsa->blinding, but
- avoids excessive locking; and if an RSA object is not shared
- between threads, blinding will still be very fast).
- [Bodo Moeller]
-
- Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
-
- *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
- via timing by performing a MAC computation even if incorrect
- block cipher padding has been found. This is a countermeasure
- against active attacks where the attacker has to distinguish
- between bad padding and a MAC verification error. (CVE-2003-0078)
-
- [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
- Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
- Martin Vuagnoux (EPFL, Ilion)]
-
- Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
-
- *) New function OPENSSL_cleanse(), which is used to cleanse a section of
- memory from its contents. This is done with a counter that will
- place alternating values in each byte. This can be used to solve
- two issues: 1) the removal of calls to memset() by highly optimizing
- compilers, and 2) cleansing with other values than 0, since those can
- be read through on certain media, for example a swap space on disk.
- [Geoff Thorpe]
-
- *) Bugfix: client side session caching did not work with external caching,
- because the session->cipher setting was not restored when reloading
- from the external cache. This problem was masked, when
- SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
- (Found by Steve Haslam <steve@araqnid.ddts.net>.)
- [Lutz Jaenicke]
-
- *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
- length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
- [Zeev Lieber <zeev-l@yahoo.com>]
-
- *) Undo an undocumented change introduced in 0.9.6e which caused
- repeated calls to OpenSSL_add_all_ciphers() and
- OpenSSL_add_all_digests() to be ignored, even after calling
- EVP_cleanup().
- [Richard Levitte]
-
- *) Change the default configuration reader to deal with last line not
- being properly terminated.
- [Richard Levitte]
-
- *) Change X509_NAME_cmp() so it applies the special rules on handling
- DN values that are of type PrintableString, as well as RDNs of type
- emailAddress where the value has the type ia5String.
- [stefank@valicert.com via Richard Levitte]
-
- *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
- the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
- doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
- the bitwise-OR of the two for use by the majority of applications
- wanting this behaviour, and update the docs. The documented
- behaviour and actual behaviour were inconsistent and had been
- changing anyway, so this is more a bug-fix than a behavioural
- change.
- [Geoff Thorpe, diagnosed by Nadav Har'El]
-
- *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
- (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
- [Bodo Moeller]
-
- *) Fix initialization code race conditions in
- SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
- SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
- SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
- TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
- ssl2_get_cipher_by_char(),
- ssl3_get_cipher_by_char().
- [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
-
- *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
- the cached sessions are flushed, as the remove_cb() might use ex_data
- contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
- (see [openssl.org #212]).
- [Geoff Thorpe, Lutz Jaenicke]
-
- *) Fix typo in OBJ_txt2obj which incorrectly passed the content
- length, instead of the encoding length to d2i_ASN1_OBJECT.
- [Steve Henson]
-
- Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
-
- *) [In 0.9.6g-engine release:]
- Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
- [Lynn Gazis <lgazis@rainbow.com>]
-
- Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
-
- *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
- and get fix the header length calculation.
- [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
- Alon Kantor <alonk@checkpoint.com> (and others),
- Steve Henson]
-
- *) Use proper error handling instead of 'assertions' in buffer
- overflow checks added in 0.9.6e. This prevents DoS (the
- assertions could call abort()).
- [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
-
- Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
-
- *) Add various sanity checks to asn1_get_length() to reject
- the ASN1 length bytes if they exceed sizeof(long), will appear
- negative or the content length exceeds the length of the
- supplied buffer.
- [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
-
- *) Fix cipher selection routines: ciphers without encryption had no flags
- for the cipher strength set and where therefore not handled correctly
- by the selection routines (PR #130).
- [Lutz Jaenicke]
-
- *) Fix EVP_dsa_sha macro.
- [Nils Larsch]
-
- *) New option
- SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
- for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
- that was added in OpenSSL 0.9.6d.
-
- As the countermeasure turned out to be incompatible with some
- broken SSL implementations, the new option is part of SSL_OP_ALL.
- SSL_OP_ALL is usually employed when compatibility with weird SSL
- implementations is desired (e.g. '-bugs' option to 's_client' and
- 's_server'), so the new option is automatically set in many
- applications.
- [Bodo Moeller]
-
- *) Changes in security patch:
-
- Changes marked "(CHATS)" were sponsored by the Defense Advanced
- Research Projects Agency (DARPA) and Air Force Research Laboratory,
- Air Force Materiel Command, USAF, under agreement number
- F30602-01-2-0537.
-
- *) Add various sanity checks to asn1_get_length() to reject
- the ASN1 length bytes if they exceed sizeof(long), will appear
- negative or the content length exceeds the length of the
- supplied buffer. (CVE-2002-0659)
- [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
-
- *) Assertions for various potential buffer overflows, not known to
- happen in practice.
- [Ben Laurie (CHATS)]
-
- *) Various temporary buffers to hold ASCII versions of integers were
- too small for 64 bit platforms. (CVE-2002-0655)
- [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
-
- *) Remote buffer overflow in SSL3 protocol - an attacker could
- supply an oversized session ID to a client. (CVE-2002-0656)
- [Ben Laurie (CHATS)]
-
- *) Remote buffer overflow in SSL2 protocol - an attacker could
- supply an oversized client master key. (CVE-2002-0656)
- [Ben Laurie (CHATS)]
-
- Changes between 0.9.6c and 0.9.6d [9 May 2002]
-
- *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
- encoded as NULL) with id-dsa-with-sha1.
- [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
-
- *) Check various X509_...() return values in apps/req.c.
- [Nils Larsch <nla@trustcenter.de>]
-
- *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
- an end-of-file condition would erroneously be flagged, when the CRLF
- was just at the end of a processed block. The bug was discovered when
- processing data through a buffering memory BIO handing the data to a
- BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
- <ptsekov@syntrex.com> and Nedelcho Stanev.
- [Lutz Jaenicke]
-
- *) Implement a countermeasure against a vulnerability recently found
- in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
- before application data chunks to avoid the use of known IVs
- with data potentially chosen by the attacker.
- [Bodo Moeller]
-
- *) Fix length checks in ssl3_get_client_hello().
- [Bodo Moeller]
-
- *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
- to prevent ssl3_read_internal() from incorrectly assuming that
- ssl3_read_bytes() found application data while handshake
- processing was enabled when in fact s->s3->in_read_app_data was
- merely automatically cleared during the initial handshake.
- [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
-
- *) Fix object definitions for Private and Enterprise: they were not
- recognized in their shortname (=lowercase) representation. Extend
- obj_dat.pl to issue an error when using undefined keywords instead
- of silently ignoring the problem (Svenning Sorensen
- <sss@sss.dnsalias.net>).
- [Lutz Jaenicke]
-
- *) Fix DH_generate_parameters() so that it works for 'non-standard'
- generators, i.e. generators other than 2 and 5. (Previously, the
- code did not properly initialise the 'add' and 'rem' values to
- BN_generate_prime().)
-
- In the new general case, we do not insist that 'generator' is
- actually a primitive root: This requirement is rather pointless;
- a generator of the order-q subgroup is just as good, if not
- better.
- [Bodo Moeller]
-
- *) Map new X509 verification errors to alerts. Discovered and submitted by
- Tom Wu <tom@arcot.com>.
- [Lutz Jaenicke]
-
- *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
- returning non-zero before the data has been completely received
- when using non-blocking I/O.
- [Bodo Moeller; problem pointed out by John Hughes]
-
- *) Some of the ciphers missed the strength entry (SSL_LOW etc).
- [Ben Laurie, Lutz Jaenicke]
-
- *) Fix bug in SSL_clear(): bad sessions were not removed (found by
- Yoram Zahavi <YoramZ@gilian.com>).
- [Lutz Jaenicke]
-
- *) Add information about CygWin 1.3 and on, and preserve proper
- configuration for the versions before that.
- [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
-
- *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
- check whether we deal with a copy of a session and do not delete from
- the cache in this case. Problem reported by "Izhar Shoshani Levi"
- <izhar@checkpoint.com>.
- [Lutz Jaenicke]
-
- *) Do not store session data into the internal session cache, if it
- is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
- flag is set). Proposed by Aslam <aslam@funk.com>.
- [Lutz Jaenicke]
-
- *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
- value is 0.
- [Richard Levitte]
-
- *) [In 0.9.6d-engine release:]
- Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
- [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
-
- *) Add the configuration target linux-s390x.
- [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
-
- *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
- ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
- variable as an indication that a ClientHello message has been
- received. As the flag value will be lost between multiple
- invocations of ssl3_accept when using non-blocking I/O, the
- function may not be aware that a handshake has actually taken
- place, thus preventing a new session from being added to the
- session cache.
-
- To avoid this problem, we now set s->new_session to 2 instead of
- using a local variable.
- [Lutz Jaenicke, Bodo Moeller]
-
- *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
- if the SSL_R_LENGTH_MISMATCH error is detected.
- [Geoff Thorpe, Bodo Moeller]
-
- *) New 'shared_ldflag' column in Configure platform table.
- [Richard Levitte]
-
- *) Fix EVP_CIPHER_mode macro.
- ["Dan S. Camper" <dan@bti.net>]
-
- *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
- type, we must throw them away by setting rr->length to 0.
- [D P Chang <dpc@qualys.com>]
-
- Changes between 0.9.6b and 0.9.6c [21 dec 2001]
-
- *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
- <Dominikus.Scherkl@biodata.com>. (The previous implementation
- worked incorrectly for those cases where range = 10..._2 and
- 3*range is two bits longer than range.)
- [Bodo Moeller]
-
- *) Only add signing time to PKCS7 structures if it is not already
- present.
- [Steve Henson]
-
- *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
- OBJ_ld_ce should be OBJ_id_ce.
- Also some ip-pda OIDs in crypto/objects/objects.txt were
- incorrect (cf. RFC 3039).
- [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
-
- *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
- returns early because it has nothing to do.
- [Andy Schneider <andy.schneider@bjss.co.uk>]
-
- *) [In 0.9.6c-engine release:]
- Fix mutex callback return values in crypto/engine/hw_ncipher.c.
- [Andy Schneider <andy.schneider@bjss.co.uk>]
-
- *) [In 0.9.6c-engine release:]
- Add support for Cryptographic Appliance's keyserver technology.
- (Use engine 'keyclient')
- [Cryptographic Appliances and Geoff Thorpe]
-
- *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
- is called via tools/c89.sh because arguments have to be
- rearranged (all '-L' options must appear before the first object
- modules).
- [Richard Shapiro <rshapiro@abinitio.com>]
-
- *) [In 0.9.6c-engine release:]
- Add support for Broadcom crypto accelerator cards, backported
- from 0.9.7.
- [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
-
- *) [In 0.9.6c-engine release:]
- Add support for SureWare crypto accelerator cards from
- Baltimore Technologies. (Use engine 'sureware')
- [Baltimore Technologies and Mark Cox]
-
- *) [In 0.9.6c-engine release:]
- Add support for crypto accelerator cards from Accelerated
- Encryption Processing, www.aep.ie. (Use engine 'aep')
- [AEP Inc. and Mark Cox]
-
- *) Add a configuration entry for gcc on UnixWare.
- [Gary Benson <gbenson@redhat.com>]
-
- *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
- messages are stored in a single piece (fixed-length part and
- variable-length part combined) and fix various bugs found on the way.
- [Bodo Moeller]
-
- *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
- instead. BIO_gethostbyname() does not know what timeouts are
- appropriate, so entries would stay in cache even when they have
- become invalid.
- [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
-
- *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
- faced with a pathologically small ClientHello fragment that does
- not contain client_version: Instead of aborting with an error,
- simply choose the highest available protocol version (i.e.,
- TLS 1.0 unless it is disabled). In practice, ClientHello
- messages are never sent like this, but this change gives us
- strictly correct behaviour at least for TLS.
- [Bodo Moeller]
-
- *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
- never resets s->method to s->ctx->method when called from within
- one of the SSL handshake functions.
- [Bodo Moeller; problem pointed out by Niko Baric]
-
- *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
- (sent using the client's version number) if client_version is
- smaller than the protocol version in use. Also change
- ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
- the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
- the client will at least see that alert.
- [Bodo Moeller]
-
- *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
- correctly.
- [Bodo Moeller]
-
- *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
- client receives HelloRequest while in a handshake.
- [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
-
- *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
- should end in 'break', not 'goto end' which circumvents various
- cleanups done in state SSL_ST_OK. But session related stuff
- must be disabled for SSL_ST_OK in the case that we just sent a
- HelloRequest.
-
- Also avoid some overhead by not calling ssl_init_wbio_buffer()
- before just sending a HelloRequest.
- [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
-
- *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
- reveal whether illegal block cipher padding was found or a MAC
- verification error occurred. (Neither SSLerr() codes nor alerts
- are directly visible to potential attackers, but the information
- may leak via logfiles.)
-
- Similar changes are not required for the SSL 2.0 implementation
- because the number of padding bytes is sent in clear for SSL 2.0,
- and the extra bytes are just ignored. However ssl/s2_pkt.c
- failed to verify that the purported number of padding bytes is in
- the legal range.
- [Bodo Moeller]
-
- *) Add OpenUNIX-8 support including shared libraries
- (Boyd Lynn Gerber <gerberb@zenez.com>).
- [Lutz Jaenicke]
-
- *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
- 'wristwatch attack' using huge encoding parameters (cf.
- James H. Manger's CRYPTO 2001 paper). Note that the
- RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
- encoding parameters and hence was not vulnerable.
- [Bodo Moeller]
-
- *) BN_sqr() bug fix.
- [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
-
- *) Rabin-Miller test analyses assume uniformly distributed witnesses,
- so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
- followed by modular reduction.
- [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
-
- *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
- equivalent based on BN_pseudo_rand() instead of BN_rand().
- [Bodo Moeller]
-
- *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
- This function was broken, as the check for a new client hello message
- to handle SGC did not allow these large messages.
- (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
- [Lutz Jaenicke]
-
- *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
- [Lutz Jaenicke]
-
- *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
- for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
- [Lutz Jaenicke]
-
- *) Rework the configuration and shared library support for Tru64 Unix.
- The configuration part makes use of modern compiler features and
- still retains old compiler behavior for those that run older versions
- of the OS. The shared library support part includes a variant that
- uses the RPATH feature, and is available through the special
- configuration target "alpha-cc-rpath", which will never be selected
- automatically.
- [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
-
- *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
- with the same message size as in ssl3_get_certificate_request().
- Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
- messages might inadvertently be reject as too long.
- [Petr Lampa <lampa@fee.vutbr.cz>]
-
- *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
- [Andy Polyakov]
-
- *) Modified SSL library such that the verify_callback that has been set
- specifically for an SSL object with SSL_set_verify() is actually being
- used. Before the change, a verify_callback set with this function was
- ignored and the verify_callback() set in the SSL_CTX at the time of
- the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
- to allow the necessary settings.
- [Lutz Jaenicke]
-
- *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
- explicitly to NULL, as at least on Solaris 8 this seems not always to be
- done automatically (in contradiction to the requirements of the C
- standard). This made problems when used from OpenSSH.
- [Lutz Jaenicke]
-
- *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
- dh->length and always used
-
- BN_rand_range(priv_key, dh->p).
-
- BN_rand_range() is not necessary for Diffie-Hellman, and this
- specific range makes Diffie-Hellman unnecessarily inefficient if
- dh->length (recommended exponent length) is much smaller than the
- length of dh->p. We could use BN_rand_range() if the order of
- the subgroup was stored in the DH structure, but we only have
- dh->length.
-
- So switch back to
-
- BN_rand(priv_key, l, ...)
-
- where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
- otherwise.
- [Bodo Moeller]
-
- *) In
-
- RSA_eay_public_encrypt
- RSA_eay_private_decrypt
- RSA_eay_private_encrypt (signing)
- RSA_eay_public_decrypt (signature verification)
-
- (default implementations for RSA_public_encrypt,
- RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
- always reject numbers >= n.
- [Bodo Moeller]
-
- *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
- to synchronize access to 'locking_thread'. This is necessary on
- systems where access to 'locking_thread' (an 'unsigned long'
- variable) is not atomic.
- [Bodo Moeller]
-
- *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
- *before* setting the 'crypto_lock_rand' flag. The previous code had
- a race condition if 0 is a valid thread ID.
- [Travis Vitek <vitek@roguewave.com>]
-
- *) Add support for shared libraries under Irix.
- [Albert Chin-A-Young <china@thewrittenword.com>]
-
- *) Add configuration option to build on Linux on both big-endian and
- little-endian MIPS.
- [Ralf Baechle <ralf@uni-koblenz.de>]
-
- *) Add the possibility to create shared libraries on HP-UX.
- [Richard Levitte]
-
- Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
-
- *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
- to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
- Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
- PRNG state recovery was possible based on the output of
- one PRNG request appropriately sized to gain knowledge on
- 'md' followed by enough consecutive 1-byte PRNG requests
- to traverse all of 'state'.
-
- 1. When updating 'md_local' (the current thread's copy of 'md')
- during PRNG output generation, hash all of the previous
- 'md_local' value, not just the half used for PRNG output.
-
- 2. Make the number of bytes from 'state' included into the hash
- independent from the number of PRNG bytes requested.
-
- The first measure alone would be sufficient to avoid
- Markku-Juhani's attack. (Actually it had never occurred
- to me that the half of 'md_local' used for chaining was the
- half from which PRNG output bytes were taken -- I had always
- assumed that the secret half would be used.) The second
- measure makes sure that additional data from 'state' is never
- mixed into 'md_local' in small portions; this heuristically
- further strengthens the PRNG.
- [Bodo Moeller]
-
- *) Fix crypto/bn/asm/mips3.s.
- [Andy Polyakov]
-
- *) When only the key is given to "enc", the IV is undefined. Print out
- an error message in this case.
- [Lutz Jaenicke]
-
- *) Handle special case when X509_NAME is empty in X509 printing routines.
- [Steve Henson]
-
- *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
- positive and less than q.
- [Bodo Moeller]
-
- *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
- used: it isn't thread safe and the add_lock_callback should handle
- that itself.
- [Paul Rose <Paul.Rose@bridge.com>]
-
- *) Verify that incoming data obeys the block size in
- ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
- [Bodo Moeller]
-
- *) Fix OAEP check.
- [Ulf Möller, Bodo Möller]
-
- *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
- RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
- when fixing the server behaviour for backwards-compatible 'client
- hello' messages. (Note that the attack is impractical against
- SSL 3.0 and TLS 1.0 anyway because length and version checking
- means that the probability of guessing a valid ciphertext is
- around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
- paper.)
-
- Before 0.9.5, the countermeasure (hide the error by generating a
- random 'decryption result') did not work properly because
- ERR_clear_error() was missing, meaning that SSL_get_error() would
- detect the supposedly ignored error.
-
- Both problems are now fixed.
- [Bodo Moeller]
-
- *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
- (previously it was 1024).
- [Bodo Moeller]
-
- *) Fix for compatibility mode trust settings: ignore trust settings
- unless some valid trust or reject settings are present.
- [Steve Henson]
-
- *) Fix for blowfish EVP: its a variable length cipher.
- [Steve Henson]
-
- *) Fix various bugs related to DSA S/MIME verification. Handle missing
- parameters in DSA public key structures and return an error in the
- DSA routines if parameters are absent.
- [Steve Henson]
-
- *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
- in the current directory if neither $RANDFILE nor $HOME was set.
- RAND_file_name() in 0.9.6a returned NULL in this case. This has
- caused some confusion to Windows users who haven't defined $HOME.
- Thus RAND_file_name() is changed again: e_os.h can define a
- DEFAULT_HOME, which will be used if $HOME is not set.
- For Windows, we use "C:"; on other platforms, we still require
- environment variables.
-
- *) Move 'if (!initialized) RAND_poll()' into regions protected by
- CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
- having multiple threads call RAND_poll() concurrently.
- [Bodo Moeller]
-
- *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
- combination of a flag and a thread ID variable.
- Otherwise while one thread is in ssleay_rand_bytes (which sets the
- flag), *other* threads can enter ssleay_add_bytes without obeying
- the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
- that they do not hold after the first thread unsets add_do_not_lock).
- [Bodo Moeller]
-
- *) Change bctest again: '-x' expressions are not available in all
- versions of 'test'.
- [Bodo Moeller]
-
- Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
-
- *) Fix a couple of memory leaks in PKCS7_dataDecode()
- [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
-
- *) Change Configure and Makefiles to provide EXE_EXT, which will contain
- the default extension for executables, if any. Also, make the perl
- scripts that use symlink() to test if it really exists and use "cp"
- if it doesn't. All this made OpenSSL compilable and installable in
- CygWin.
- [Richard Levitte]
-
- *) Fix for asn1_GetSequence() for indefinite length constructed data.
- If SEQUENCE is length is indefinite just set c->slen to the total
- amount of data available.
- [Steve Henson, reported by shige@FreeBSD.org]
- [This change does not apply to 0.9.7.]
-
- *) Change bctest to avoid here-documents inside command substitution
- (workaround for FreeBSD /bin/sh bug).
- For compatibility with Ultrix, avoid shell functions (introduced
- in the bctest version that searches along $PATH).
- [Bodo Moeller]
-
- *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
- with des_encrypt() defined on some operating systems, like Solaris
- and UnixWare.
- [Richard Levitte]
-
- *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
- On the Importance of Eliminating Errors in Cryptographic
- Computations, J. Cryptology 14 (2001) 2, 101-119,
- http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
- [Ulf Moeller]
-
- *) MIPS assembler BIGNUM division bug fix.
- [Andy Polyakov]
-
- *) Disabled incorrect Alpha assembler code.
- [Richard Levitte]
-
- *) Fix PKCS#7 decode routines so they correctly update the length
- after reading an EOC for the EXPLICIT tag.
- [Steve Henson]
- [This change does not apply to 0.9.7.]
-
- *) Fix bug in PKCS#12 key generation routines. This was triggered
- if a 3DES key was generated with a 0 initial byte. Include
- PKCS12_BROKEN_KEYGEN compilation option to retain the old
- (but broken) behaviour.
- [Steve Henson]
-
- *) Enhance bctest to search for a working bc along $PATH and print
- it when found.
- [Tim Rice <tim@multitalents.net> via Richard Levitte]
-
- *) Fix memory leaks in err.c: free err_data string if necessary;
- don't write to the wrong index in ERR_set_error_data.
- [Bodo Moeller]
-
- *) Implement ssl23_peek (analogous to ssl23_read), which previously
- did not exist.
- [Bodo Moeller]
-
- *) Replace rdtsc with _emit statements for VC++ version 5.
- [Jeremy Cooper <jeremy@baymoo.org>]
-
- *) Make it possible to reuse SSLv2 sessions.
- [Richard Levitte]
-
- *) In copy_email() check for >= 0 as a return value for
- X509_NAME_get_index_by_NID() since 0 is a valid index.
- [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
-
- *) Avoid coredump with unsupported or invalid public keys by checking if
- X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
- PKCS7_verify() fails with non detached data.
- [Steve Henson]
-
- *) Don't use getenv in library functions when run as setuid/setgid.
- New function OPENSSL_issetugid().
- [Ulf Moeller]
-
- *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
- due to incorrect handling of multi-threading:
-
- 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
-
- 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
-
- 3. Count how many times MemCheck_off() has been called so that
- nested use can be treated correctly. This also avoids
- inband-signalling in the previous code (which relied on the
- assumption that thread ID 0 is impossible).
- [Bodo Moeller]
-
- *) Add "-rand" option also to s_client and s_server.
- [Lutz Jaenicke]
-
- *) Fix CPU detection on Irix 6.x.
- [Kurt Hockenbury <khockenb@stevens-tech.edu> and
- "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
-
- *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
- was empty.
- [Steve Henson]
- [This change does not apply to 0.9.7.]
-
- *) Use the cached encoding of an X509_NAME structure rather than
- copying it. This is apparently the reason for the libsafe "errors"
- but the code is actually correct.
- [Steve Henson]
-
- *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
- Bleichenbacher's DSA attack.
- Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
- to be set and top=0 forces the highest bit to be set; top=-1 is new
- and leaves the highest bit random.
- [Ulf Moeller, Bodo Moeller]
-
- *) In the NCONF_...-based implementations for CONF_... queries
- (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
- a temporary CONF structure with the data component set to NULL
- (which gives segmentation faults in lh_retrieve).
- Instead, use NULL for the CONF pointer in CONF_get_string and
- CONF_get_number (which may use environment variables) and directly
- return NULL from CONF_get_section.
- [Bodo Moeller]
-
- *) Fix potential buffer overrun for EBCDIC.
- [Ulf Moeller]
-
- *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
- keyUsage if basicConstraints absent for a CA.
- [Steve Henson]
-
- *) Make SMIME_write_PKCS7() write mail header values with a format that
- is more generally accepted (no spaces before the semicolon), since
- some programs can't parse those values properly otherwise. Also make
- sure BIO's that break lines after each write do not create invalid
- headers.
- [Richard Levitte]
-
- *) Make the CRL encoding routines work with empty SEQUENCE OF. The
- macros previously used would not encode an empty SEQUENCE OF
- and break the signature.
- [Steve Henson]
- [This change does not apply to 0.9.7.]
-
- *) Zero the premaster secret after deriving the master secret in
- DH ciphersuites.
- [Steve Henson]
-
- *) Add some EVP_add_digest_alias registrations (as found in
- OpenSSL_add_all_digests()) to SSL_library_init()
- aka OpenSSL_add_ssl_algorithms(). This provides improved
- compatibility with peers using X.509 certificates
- with unconventional AlgorithmIdentifier OIDs.
- [Bodo Moeller]
-
- *) Fix for Irix with NO_ASM.
- ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
-
- *) ./config script fixes.
- [Ulf Moeller, Richard Levitte]
-
- *) Fix 'openssl passwd -1'.
- [Bodo Moeller]
-
- *) Change PKCS12_key_gen_asc() so it can cope with non null
- terminated strings whose length is passed in the passlen
- parameter, for example from PEM callbacks. This was done
- by adding an extra length parameter to asc2uni().
- [Steve Henson, reported by <oddissey@samsung.co.kr>]
-
- *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
- call failed, free the DSA structure.
- [Bodo Moeller]
-
- *) Fix to uni2asc() to cope with zero length Unicode strings.
- These are present in some PKCS#12 files.
- [Steve Henson]
-
- *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
- Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
- when writing a 32767 byte record.
- [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
-
- *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
- obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
-
- (RSA objects have a reference count access to which is protected
- by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
- so they are meant to be shared between threads.)
- [Bodo Moeller, Geoff Thorpe; original patch submitted by
- "Reddie, Steven" <Steven.Reddie@ca.com>]
-
- *) Fix a deadlock in CRYPTO_mem_leaks().
- [Bodo Moeller]
-
- *) Use better test patterns in bntest.
- [Ulf Möller]
-
- *) rand_win.c fix for Borland C.
- [Ulf Möller]
-
- *) BN_rshift bugfix for n == 0.
- [Bodo Moeller]
-
- *) Add a 'bctest' script that checks for some known 'bc' bugs
- so that 'make test' does not abort just because 'bc' is broken.
- [Bodo Moeller]
-
- *) Store verify_result within SSL_SESSION also for client side to
- avoid potential security hole. (Re-used sessions on the client side
- always resulted in verify_result==X509_V_OK, not using the original
- result of the server certificate verification.)
- [Lutz Jaenicke]
-
- *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
- SSL3_RT_APPLICATION_DATA, return 0.
- Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
- [Bodo Moeller]
-
- *) Fix SSL_peek:
- Both ssl2_peek and ssl3_peek, which were totally broken in earlier
- releases, have been re-implemented by renaming the previous
- implementations of ssl2_read and ssl3_read to ssl2_read_internal
- and ssl3_read_internal, respectively, and adding 'peek' parameters
- to them. The new ssl[23]_{read,peek} functions are calls to
- ssl[23]_read_internal with the 'peek' flag set appropriately.
- A 'peek' parameter has also been added to ssl3_read_bytes, which
- does the actual work for ssl3_read_internal.
- [Bodo Moeller]
-
- *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
- the method-specific "init()" handler. Also clean up ex_data after
- calling the method-specific "finish()" handler. Previously, this was
- happening the other way round.
- [Geoff Thorpe]
-
- *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
- The previous value, 12, was not always sufficient for BN_mod_exp().
- [Bodo Moeller]
-
- *) Make sure that shared libraries get the internal name engine with
- the full version number and not just 0. This should mark the
- shared libraries as not backward compatible. Of course, this should
- be changed again when we can guarantee backward binary compatibility.
- [Richard Levitte]
-
- *) Fix typo in get_cert_by_subject() in by_dir.c
- [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
-
- *) Rework the system to generate shared libraries:
-
- - Make note of the expected extension for the shared libraries and
- if there is a need for symbolic links from for example libcrypto.so.0
- to libcrypto.so.0.9.7. There is extended info in Configure for
- that.
-
- - Make as few rebuilds of the shared libraries as possible.
-
- - Still avoid linking the OpenSSL programs with the shared libraries.
-
- - When installing, install the shared libraries separately from the
- static ones.
- [Richard Levitte]
-
- *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
-
- Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
- and not in SSL_clear because the latter is also used by the
- accept/connect functions; previously, the settings made by
- SSL_set_read_ahead would be lost during the handshake.
- [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
-
- *) Correct util/mkdef.pl to be selective about disabled algorithms.
- Previously, it would create entries for disabled algorithms no
- matter what.
- [Richard Levitte]
-
- *) Added several new manual pages for SSL_* function.
- [Lutz Jaenicke]
-
- Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
-
- *) In ssl23_get_client_hello, generate an error message when faced
- with an initial SSL 3.0/TLS record that is too small to contain the
- first two bytes of the ClientHello message, i.e. client_version.
- (Note that this is a pathologic case that probably has never happened
- in real life.) The previous approach was to use the version number
- from the record header as a substitute; but our protocol choice
- should not depend on that one because it is not authenticated
- by the Finished messages.
- [Bodo Moeller]
-
- *) More robust randomness gathering functions for Windows.
- [Jeffrey Altman <jaltman@columbia.edu>]
-
- *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
- not set then we don't setup the error code for issuer check errors
- to avoid possibly overwriting other errors which the callback does
- handle. If an application does set the flag then we assume it knows
- what it is doing and can handle the new informational codes
- appropriately.
- [Steve Henson]
-
- *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
- a general "ANY" type, as such it should be able to decode anything
- including tagged types. However it didn't check the class so it would
- wrongly interpret tagged types in the same way as their universal
- counterpart and unknown types were just rejected. Changed so that the
- tagged and unknown types are handled in the same way as a SEQUENCE:
- that is the encoding is stored intact. There is also a new type
- "V_ASN1_OTHER" which is used when the class is not universal, in this
- case we have no idea what the actual type is so we just lump them all
- together.
- [Steve Henson]
-
- *) On VMS, stdout may very well lead to a file that is written to
- in a record-oriented fashion. That means that every write() will
- write a separate record, which will be read separately by the
- programs trying to read from it. This can be very confusing.
-
- The solution is to put a BIO filter in the way that will buffer
- text until a linefeed is reached, and then write everything a
- line at a time, so every record written will be an actual line,
- not chunks of lines and not (usually doesn't happen, but I've
- seen it once) several lines in one record. BIO_f_linebuffer() is
- the answer.
-
- Currently, it's a VMS-only method, because that's where it has
- been tested well enough.
- [Richard Levitte]
-
- *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
- it can return incorrect results.
- (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
- but it was in 0.9.6-beta[12].)
- [Bodo Moeller]
-
- *) Disable the check for content being present when verifying detached
- signatures in pk7_smime.c. Some versions of Netscape (wrongly)
- include zero length content when signing messages.
- [Steve Henson]
-
- *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
- BIO_ctrl (for BIO pairs).
- [Bodo Möller]
-
- *) Add DSO method for VMS.
- [Richard Levitte]
-
- *) Bug fix: Montgomery multiplication could produce results with the
- wrong sign.
- [Ulf Möller]
-
- *) Add RPM specification openssl.spec and modify it to build three
- packages. The default package contains applications, application
- documentation and run-time libraries. The devel package contains
- include files, static libraries and function documentation. The
- doc package contains the contents of the doc directory. The original
- openssl.spec was provided by Damien Miller <djm@mindrot.org>.
- [Richard Levitte]
-
- *) Add a large number of documentation files for many SSL routines.
- [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
-
- *) Add a configuration entry for Sony News 4.
- [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
-
- *) Don't set the two most significant bits to one when generating a
- random number < q in the DSA library.
- [Ulf Möller]
-
- *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
- behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
- the underlying transport is blocking) if a handshake took place.
- (The default behaviour is needed by applications such as s_client
- and s_server that use select() to determine when to use SSL_read;
- but for applications that know in advance when to expect data, it
- just makes things more complicated.)
- [Bodo Moeller]
-
- *) Add RAND_egd_bytes(), which gives control over the number of bytes read
- from EGD.
- [Ben Laurie]
-
- *) Add a few more EBCDIC conditionals that make `req' and `x509'
- work better on such systems.
- [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
-
- *) Add two demo programs for PKCS12_parse() and PKCS12_create().
- Update PKCS12_parse() so it copies the friendlyName and the
- keyid to the certificates aux info.
- [Steve Henson]
-
- *) Fix bug in PKCS7_verify() which caused an infinite loop
- if there was more than one signature.
- [Sven Uszpelkat <su@celocom.de>]
-
- *) Major change in util/mkdef.pl to include extra information
- about each symbol, as well as presenting variables as well
- as functions. This change means that there's n more need
- to rebuild the .num files when some algorithms are excluded.
- [Richard Levitte]
-
- *) Allow the verify time to be set by an application,
- rather than always using the current time.
- [Steve Henson]
-
- *) Phase 2 verify code reorganisation. The certificate
- verify code now looks up an issuer certificate by a
- number of criteria: subject name, authority key id
- and key usage. It also verifies self signed certificates
- by the same criteria. The main comparison function is
- X509_check_issued() which performs these checks.
-
- Lot of changes were necessary in order to support this
- without completely rewriting the lookup code.
-
- Authority and subject key identifier are now cached.
-
- The LHASH 'certs' is X509_STORE has now been replaced
- by a STACK_OF(X509_OBJECT). This is mainly because an
- LHASH can't store or retrieve multiple objects with
- the same hash value.
-
- As a result various functions (which were all internal
- use only) have changed to handle the new X509_STORE
- structure. This will break anything that messed round
- with X509_STORE internally.
-
- The functions X509_STORE_add_cert() now checks for an
- exact match, rather than just subject name.
-
- The X509_STORE API doesn't directly support the retrieval
- of multiple certificates matching a given criteria, however
- this can be worked round by performing a lookup first
- (which will fill the cache with candidate certificates)
- and then examining the cache for matches. This is probably
- the best we can do without throwing out X509_LOOKUP
- entirely (maybe later...).
-
- The X509_VERIFY_CTX structure has been enhanced considerably.
-
- All certificate lookup operations now go via a get_issuer()
- callback. Although this currently uses an X509_STORE it
- can be replaced by custom lookups. This is a simple way
- to bypass the X509_STORE hackery necessary to make this
- work and makes it possible to use more efficient techniques
- in future. A very simple version which uses a simple
- STACK for its trusted certificate store is also provided
- using X509_STORE_CTX_trusted_stack().
-
- The verify_cb() and verify() callbacks now have equivalents
- in the X509_STORE_CTX structure.
-
- X509_STORE_CTX also has a 'flags' field which can be used
- to customise the verify behaviour.
- [Steve Henson]
-
- *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
- excludes S/MIME capabilities.
- [Steve Henson]
-
- *) When a certificate request is read in keep a copy of the
- original encoding of the signed data and use it when outputting
- again. Signatures then use the original encoding rather than
- a decoded, encoded version which may cause problems if the
- request is improperly encoded.
- [Steve Henson]
-
- *) For consistency with other BIO_puts implementations, call
- buffer_write(b, ...) directly in buffer_puts instead of calling
- BIO_write(b, ...).
-
- In BIO_puts, increment b->num_write as in BIO_write.
- [Peter.Sylvester@EdelWeb.fr]
-
- *) Fix BN_mul_word for the case where the word is 0. (We have to use
- BN_zero, we may not return a BIGNUM with an array consisting of
- words set to zero.)
- [Bodo Moeller]
-
- *) Avoid calling abort() from within the library when problems are
- detected, except if preprocessor symbols have been defined
- (such as REF_CHECK, BN_DEBUG etc.).
- [Bodo Moeller]
-
- *) New openssl application 'rsautl'. This utility can be
- used for low level RSA operations. DER public key
- BIO/fp routines also added.
- [Steve Henson]
-
- *) New Configure entry and patches for compiling on QNX 4.
- [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
-
- *) A demo state-machine implementation was sponsored by
- Nuron (http://www.nuron.com/) and is now available in
- demos/state_machine.
- [Ben Laurie]
-
- *) New options added to the 'dgst' utility for signature
- generation and verification.
- [Steve Henson]
-
- *) Unrecognized PKCS#7 content types are now handled via a
- catch all ASN1_TYPE structure. This allows unsupported
- types to be stored as a "blob" and an application can
- encode and decode it manually.
- [Steve Henson]
-
- *) Fix various signed/unsigned issues to make a_strex.c
- compile under VC++.
- [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
-
- *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
- length if passed a buffer. ASN1_INTEGER_to_BN failed
- if passed a NULL BN and its argument was negative.
- [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
-
- *) Modification to PKCS#7 encoding routines to output definite
- length encoding. Since currently the whole structures are in
- memory there's not real point in using indefinite length
- constructed encoding. However if OpenSSL is compiled with
- the flag PKCS7_INDEFINITE_ENCODING the old form is used.
- [Steve Henson]
-
- *) Added BIO_vprintf() and BIO_vsnprintf().
- [Richard Levitte]
-
- *) Added more prefixes to parse for in the strings written
- through a logging bio, to cover all the levels that are available
- through syslog. The prefixes are now:
-
- PANIC, EMERG, EMR => LOG_EMERG
- ALERT, ALR => LOG_ALERT
- CRIT, CRI => LOG_CRIT
- ERROR, ERR => LOG_ERR
- WARNING, WARN, WAR => LOG_WARNING
- NOTICE, NOTE, NOT => LOG_NOTICE
- INFO, INF => LOG_INFO
- DEBUG, DBG => LOG_DEBUG
-
- and as before, if none of those prefixes are present at the
- beginning of the string, LOG_ERR is chosen.
-
- On Win32, the LOG_* levels are mapped according to this:
-
- LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
- LOG_WARNING => EVENTLOG_WARNING_TYPE
- LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
-
- [Richard Levitte]
-
- *) Made it possible to reconfigure with just the configuration
- argument "reconf" or "reconfigure". The command line arguments
- are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
- and are retrieved from there when reconfiguring.
- [Richard Levitte]
-
- *) MD4 implemented.
- [Assar Westerlund <assar@sics.se>, Richard Levitte]
-
- *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
- [Richard Levitte]
-
- *) The obj_dat.pl script was messing up the sorting of object
- names. The reason was that it compared the quoted version
- of strings as a result "OCSP" > "OCSP Signing" because
- " > SPACE. Changed script to store unquoted versions of
- names and add quotes on output. It was also omitting some
- names from the lookup table if they were given a default
- value (that is if SN is missing it is given the same
- value as LN and vice versa), these are now added on the
- grounds that if an object has a name we should be able to
- look it up. Finally added warning output when duplicate
- short or long names are found.
- [Steve Henson]
-
- *) Changes needed for Tandem NSK.
- [Scott Uroff <scott@xypro.com>]
-
- *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
- RSA_padding_check_SSLv23(), special padding was never detected
- and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
- version rollback attacks was not effective.
-
- In s23_clnt.c, don't use special rollback-attack detection padding
- (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
- client; similarly, in s23_srvr.c, don't do the rollback check if
- SSL 2.0 is the only protocol enabled in the server.
- [Bodo Moeller]
-
- *) Make it possible to get hexdumps of unprintable data with 'openssl
- asn1parse'. By implication, the functions ASN1_parse_dump() and
- BIO_dump_indent() are added.
- [Richard Levitte]
-
- *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
- these print out strings and name structures based on various
- flags including RFC2253 support and proper handling of
- multibyte characters. Added options to the 'x509' utility
- to allow the various flags to be set.
- [Steve Henson]
-
- *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
- Also change the functions X509_cmp_current_time() and
- X509_gmtime_adj() work with an ASN1_TIME structure,
- this will enable certificates using GeneralizedTime in validity
- dates to be checked.
- [Steve Henson]
-
- *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
- negative public key encodings) on by default,
- NO_NEG_PUBKEY_BUG can be set to disable it.
- [Steve Henson]
-
- *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
- content octets. An i2c_ASN1_OBJECT is unnecessary because
- the encoding can be trivially obtained from the structure.
- [Steve Henson]
-
- *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
- not read locks (CRYPTO_r_[un]lock).
- [Bodo Moeller]
-
- *) A first attempt at creating official support for shared
- libraries through configuration. I've kept it so the
- default is static libraries only, and the OpenSSL programs
- are always statically linked for now, but there are
- preparations for dynamic linking in place.
- This has been tested on Linux and Tru64.
- [Richard Levitte]
-
- *) Randomness polling function for Win9x, as described in:
- Peter Gutmann, Software Generation of Practically Strong
- Random Numbers.
- [Ulf Möller]
-
- *) Fix so PRNG is seeded in req if using an already existing
- DSA key.
- [Steve Henson]
-
- *) New options to smime application. -inform and -outform
- allow alternative formats for the S/MIME message including
- PEM and DER. The -content option allows the content to be
- specified separately. This should allow things like Netscape
- form signing output easier to verify.
- [Steve Henson]
-
- *) Fix the ASN1 encoding of tags using the 'long form'.
- [Steve Henson]
-
- *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
- STRING types. These convert content octets to and from the
- underlying type. The actual tag and length octets are
- already assumed to have been read in and checked. These
- are needed because all other string types have virtually
- identical handling apart from the tag. By having versions
- of the ASN1 functions that just operate on content octets
- IMPLICIT tagging can be handled properly. It also allows
- the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
- and ASN1_INTEGER are identical apart from the tag.
- [Steve Henson]
-
- *) Change the handling of OID objects as follows:
-
- - New object identifiers are inserted in objects.txt, following
- the syntax given in objects.README.
- - objects.pl is used to process obj_mac.num and create a new
- obj_mac.h.
- - obj_dat.pl is used to create a new obj_dat.h, using the data in
- obj_mac.h.
-
- This is currently kind of a hack, and the perl code in objects.pl
- isn't very elegant, but it works as I intended. The simplest way
- to check that it worked correctly is to look in obj_dat.h and
- check the array nid_objs and make sure the objects haven't moved
- around (this is important!). Additions are OK, as well as
- consistent name changes.
- [Richard Levitte]
-
- *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
- [Bodo Moeller]
-
- *) Addition of the command line parameter '-rand file' to 'openssl req'.
- The given file adds to whatever has already been seeded into the
- random pool through the RANDFILE configuration file option or
- environment variable, or the default random state file.
- [Richard Levitte]
-
- *) mkstack.pl now sorts each macro group into lexical order.
- Previously the output order depended on the order the files
- appeared in the directory, resulting in needless rewriting
- of safestack.h .
- [Steve Henson]
-
- *) Patches to make OpenSSL compile under Win32 again. Mostly
- work arounds for the VC++ problem that it treats func() as
- func(void). Also stripped out the parts of mkdef.pl that
- added extra typesafe functions: these no longer exist.
- [Steve Henson]
-
- *) Reorganisation of the stack code. The macros are now all
- collected in safestack.h . Each macro is defined in terms of
- a "stack macro" of the form SKM_<name>(type, a, b). The
- DEBUG_SAFESTACK is now handled in terms of function casts,
- this has the advantage of retaining type safety without the
- use of additional functions. If DEBUG_SAFESTACK is not defined
- then the non typesafe macros are used instead. Also modified the
- mkstack.pl script to handle the new form. Needs testing to see
- if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
- the default if no major problems. Similar behaviour for ASN1_SET_OF
- and PKCS12_STACK_OF.
- [Steve Henson]
-
- *) When some versions of IIS use the 'NET' form of private key the
- key derivation algorithm is different. Normally MD5(password) is
- used as a 128 bit RC4 key. In the modified case
- MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
- new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
- as the old Netscape_RSA functions except they have an additional
- 'sgckey' parameter which uses the modified algorithm. Also added
- an -sgckey command line option to the rsa utility. Thanks to
- Adrian Peck <bertie@ncipher.com> for posting details of the modified
- algorithm to openssl-dev.
- [Steve Henson]
-
- *) The evp_local.h macros were using 'c.##kname' which resulted in
- invalid expansion on some systems (SCO 5.0.5 for example).
- Corrected to 'c.kname'.
- [Phillip Porch <root@theporch.com>]
-
- *) New X509_get1_email() and X509_REQ_get1_email() functions that return
- a STACK of email addresses from a certificate or request, these look
- in the subject name and the subject alternative name extensions and
- omit any duplicate addresses.
- [Steve Henson]
-
- *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
- This makes DSA verification about 2 % faster.
- [Bodo Moeller]
-
- *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
- (meaning that now 2^5 values will be precomputed, which is only 4 KB
- plus overhead for 1024 bit moduli).
- This makes exponentiations about 0.5 % faster for 1024 bit
- exponents (as measured by "openssl speed rsa2048").
- [Bodo Moeller]
-
- *) Rename memory handling macros to avoid conflicts with other
- software:
- Malloc => OPENSSL_malloc
- Malloc_locked => OPENSSL_malloc_locked
- Realloc => OPENSSL_realloc
- Free => OPENSSL_free
- [Richard Levitte]
-
- *) New function BN_mod_exp_mont_word for small bases (roughly 15%
- faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
- [Bodo Moeller]
-
- *) CygWin32 support.
- [John Jarvie <jjarvie@newsguy.com>]
-
- *) The type-safe stack code has been rejigged. It is now only compiled
- in when OpenSSL is configured with the DEBUG_SAFESTACK option and
- by default all type-specific stack functions are "#define"d back to
- standard stack functions. This results in more streamlined output
- but retains the type-safety checking possibilities of the original
- approach.
- [Geoff Thorpe]
-
- *) The STACK code has been cleaned up, and certain type declarations
- that didn't make a lot of sense have been brought in line. This has
- also involved a cleanup of sorts in safestack.h to more correctly
- map type-safe stack functions onto their plain stack counterparts.
- This work has also resulted in a variety of "const"ifications of
- lots of the code, especially "_cmp" operations which should normally
- be prototyped with "const" parameters anyway.
- [Geoff Thorpe]
-
- *) When generating bytes for the first time in md_rand.c, 'stir the pool'
- by seeding with STATE_SIZE dummy bytes (with zero entropy count).
- (The PRNG state consists of two parts, the large pool 'state' and 'md',
- where all of 'md' is used each time the PRNG is used, but 'state'
- is used only indexed by a cyclic counter. As entropy may not be
- well distributed from the beginning, 'md' is important as a
- chaining variable. However, the output function chains only half
- of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
- all of 'md', and seeding with STATE_SIZE dummy bytes will result
- in all of 'state' being rewritten, with the new values depending
- on virtually all of 'md'. This overcomes the 80 bit limitation.)
- [Bodo Moeller]
-
- *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
- the handshake is continued after ssl_verify_cert_chain();
- otherwise, if SSL_VERIFY_NONE is set, remaining error codes
- can lead to 'unexplainable' connection aborts later.
- [Bodo Moeller; problem tracked down by Lutz Jaenicke]
-
- *) Major EVP API cipher revision.
- Add hooks for extra EVP features. This allows various cipher
- parameters to be set in the EVP interface. Support added for variable
- key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
- setting of RC2 and RC5 parameters.
-
- Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
- ciphers.
-
- Remove lots of duplicated code from the EVP library. For example *every*
- cipher init() function handles the 'iv' in the same way according to the
- cipher mode. They also all do nothing if the 'key' parameter is NULL and
- for CFB and OFB modes they zero ctx->num.
-
- New functionality allows removal of S/MIME code RC2 hack.
-
- Most of the routines have the same form and so can be declared in terms
- of macros.
-
- By shifting this to the top level EVP_CipherInit() it can be removed from
- all individual ciphers. If the cipher wants to handle IVs or keys
- differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
- flags.
-
- Change lots of functions like EVP_EncryptUpdate() to now return a
- value: although software versions of the algorithms cannot fail
- any installed hardware versions can.
- [Steve Henson]
-
- *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
- this option is set, tolerate broken clients that send the negotiated
- protocol version number instead of the requested protocol version
- number.
- [Bodo Moeller]
-
- *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
- i.e. non-zero for export ciphersuites, zero otherwise.
- Previous versions had this flag inverted, inconsistent with
- rsa_tmp_cb (..._TMP_RSA_CB).
- [Bodo Moeller; problem reported by Amit Chopra]
-
- *) Add missing DSA library text string. Work around for some IIS
- key files with invalid SEQUENCE encoding.
- [Steve Henson]
-
- *) Add a document (doc/standards.txt) that list all kinds of standards
- and so on that are implemented in OpenSSL.
- [Richard Levitte]
-
- *) Enhance c_rehash script. Old version would mishandle certificates
- with the same subject name hash and wouldn't handle CRLs at all.
- Added -fingerprint option to crl utility, to support new c_rehash
- features.
- [Steve Henson]
-
- *) Eliminate non-ANSI declarations in crypto.h and stack.h.
- [Ulf Möller]
-
- *) Fix for SSL server purpose checking. Server checking was
- rejecting certificates which had extended key usage present
- but no ssl client purpose.
- [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
-
- *) Make PKCS#12 code work with no password. The PKCS#12 spec
- is a little unclear about how a blank password is handled.
- Since the password in encoded as a BMPString with terminating
- double NULL a zero length password would end up as just the
- double NULL. However no password at all is different and is
- handled differently in the PKCS#12 key generation code. NS
- treats a blank password as zero length. MSIE treats it as no
- password on export: but it will try both on import. We now do
- the same: PKCS12_parse() tries zero length and no password if
- the password is set to "" or NULL (NULL is now a valid password:
- it wasn't before) as does the pkcs12 application.
- [Steve Henson]
-
- *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
- perror when PEM_read_bio_X509_REQ fails, the error message must
- be obtained from the error queue.
- [Bodo Moeller]
-
- *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
- it in ERR_remove_state if appropriate, and change ERR_get_state
- accordingly to avoid race conditions (this is necessary because
- thread_hash is no longer constant once set).
- [Bodo Moeller]
-
- *) Bugfix for linux-elf makefile.one.
- [Ulf Möller]
-
- *) RSA_get_default_method() will now cause a default
- RSA_METHOD to be chosen if one doesn't exist already.
- Previously this was only set during a call to RSA_new()
- or RSA_new_method(NULL) meaning it was possible for
- RSA_get_default_method() to return NULL.
- [Geoff Thorpe]
-
- *) Added native name translation to the existing DSO code
- that will convert (if the flag to do so is set) filenames
- that are sufficiently small and have no path information
- into a canonical native form. Eg. "blah" converted to
- "libblah.so" or "blah.dll" etc.
- [Geoff Thorpe]
-
- *) New function ERR_error_string_n(e, buf, len) which is like
- ERR_error_string(e, buf), but writes at most 'len' bytes
- including the 0 terminator. For ERR_error_string_n, 'buf'
- may not be NULL.
- [Damien Miller <djm@mindrot.org>, Bodo Moeller]
-
- *) CONF library reworked to become more general. A new CONF
- configuration file reader "class" is implemented as well as a
- new functions (NCONF_*, for "New CONF") to handle it. The now
- old CONF_* functions are still there, but are reimplemented to
- work in terms of the new functions. Also, a set of functions
- to handle the internal storage of the configuration data is
- provided to make it easier to write new configuration file
- reader "classes" (I can definitely see something reading a
- configuration file in XML format, for example), called _CONF_*,
- or "the configuration storage API"...
-
- The new configuration file reading functions are:
-
- NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
- NCONF_get_section, NCONF_get_string, NCONF_get_numbre
-
- NCONF_default, NCONF_WIN32
-
- NCONF_dump_fp, NCONF_dump_bio
-
- NCONF_default and NCONF_WIN32 are method (or "class") choosers,
- NCONF_new creates a new CONF object. This works in the same way
- as other interfaces in OpenSSL, like the BIO interface.
- NCONF_dump_* dump the internal storage of the configuration file,
- which is useful for debugging. All other functions take the same
- arguments as the old CONF_* functions with the exception of the
- first that must be a `CONF *' instead of a `LHASH *'.
-
- To make it easier to use the new classes with the old CONF_* functions,
- the function CONF_set_default_method is provided.
- [Richard Levitte]
-
- *) Add '-tls1' option to 'openssl ciphers', which was already
- mentioned in the documentation but had not been implemented.
- (This option is not yet really useful because even the additional
- experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
- [Bodo Moeller]
-
- *) Initial DSO code added into libcrypto for letting OpenSSL (and
- OpenSSL-based applications) load shared libraries and bind to
- them in a portable way.
- [Geoff Thorpe, with contributions from Richard Levitte]
-
- Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
-
- *) Make sure _lrotl and _lrotr are only used with MSVC.
-
- *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
- (the default implementation of RAND_status).
-
- *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
- to '-clrext' (= clear extensions), as intended and documented.
- [Bodo Moeller; inconsistency pointed out by Michael Attili
- <attili@amaxo.com>]
-
- *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
- was larger than the MD block size.
- [Steve Henson, pointed out by Yost William <YostW@tce.com>]
-
- *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
- fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
- using the passed key: if the passed key was a private key the result
- of X509_print(), for example, would be to print out all the private key
- components.
- [Steve Henson]
-
- *) des_quad_cksum() byte order bug fix.
- [Ulf Möller, using the problem description in krb4-0.9.7, where
- the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
-
- *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
- discouraged.
- [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
-
- *) For easily testing in shell scripts whether some command
- 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
- returns with exit code 0 iff no command of the given name is available.
- 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
- the output goes to stdout and nothing is printed to stderr.
- Additional arguments are always ignored.
-
- Since for each cipher there is a command of the same name,
- the 'no-cipher' compilation switches can be tested this way.
-
- ('openssl no-XXX' is not able to detect pseudo-commands such
- as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
- [Bodo Moeller]
-
- *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
- [Bodo Moeller]
-
- *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
- is set; it will be thrown away anyway because each handshake creates
- its own key.
- ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
- to parameters -- in previous versions (since OpenSSL 0.9.3) the
- 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
- you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
- [Bodo Moeller]
-
- *) New s_client option -ign_eof: EOF at stdin is ignored, and
- 'Q' and 'R' lose their special meanings (quit/renegotiate).
- This is part of what -quiet does; unlike -quiet, -ign_eof
- does not suppress any output.
- [Richard Levitte]
-
- *) Add compatibility options to the purpose and trust code. The
- purpose X509_PURPOSE_ANY is "any purpose" which automatically
- accepts a certificate or CA, this was the previous behaviour,
- with all the associated security issues.
-
- X509_TRUST_COMPAT is the old trust behaviour: only and
- automatically trust self signed roots in certificate store. A
- new trust setting X509_TRUST_DEFAULT is used to specify that
- a purpose has no associated trust setting and it should instead
- use the value in the default purpose.
- [Steve Henson]
-
- *) Fix the PKCS#8 DSA private key code so it decodes keys again
- and fix a memory leak.
- [Steve Henson]
-
- *) In util/mkerr.pl (which implements 'make errors'), preserve
- reason strings from the previous version of the .c file, as
- the default to have only downcase letters (and digits) in
- automatically generated reasons codes is not always appropriate.
- [Bodo Moeller]
-
- *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
- using strerror. Previously, ERR_reason_error_string() returned
- library names as reason strings for SYSerr; but SYSerr is a special
- case where small numbers are errno values, not library numbers.
- [Bodo Moeller]
-
- *) Add '-dsaparam' option to 'openssl dhparam' application. This
- converts DSA parameters into DH parameters. (When creating parameters,
- DSA_generate_parameters is used.)
- [Bodo Moeller]
-
- *) Include 'length' (recommended exponent length) in C code generated
- by 'openssl dhparam -C'.
- [Bodo Moeller]
-
- *) The second argument to set_label in perlasm was already being used
- so couldn't be used as a "file scope" flag. Moved to third argument
- which was free.
- [Steve Henson]
-
- *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
- instead of RAND_bytes for encryption IVs and salts.
- [Bodo Moeller]
-
- *) Include RAND_status() into RAND_METHOD instead of implementing
- it only for md_rand.c Otherwise replacing the PRNG by calling
- RAND_set_rand_method would be impossible.
- [Bodo Moeller]
-
- *) Don't let DSA_generate_key() enter an infinite loop if the random
- number generation fails.
- [Bodo Moeller]
-
- *) New 'rand' application for creating pseudo-random output.
- [Bodo Moeller]
-
- *) Added configuration support for Linux/IA64
- [Rolf Haberrecker <rolf@suse.de>]
-
- *) Assembler module support for Mingw32.
- [Ulf Möller]
-
- *) Shared library support for HPUX (in shlib/).
- [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
-
- *) Shared library support for Solaris gcc.
- [Lutz Behnke <behnke@trustcenter.de>]
-
- Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
-
- *) PKCS7_encrypt() was adding text MIME headers twice because they
- were added manually and by SMIME_crlf_copy().
- [Steve Henson]
-
- *) In bntest.c don't call BN_rand with zero bits argument.
- [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
-
- *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
- case was implemented. This caused BN_div_recp() to fail occasionally.
- [Ulf Möller]
-
- *) Add an optional second argument to the set_label() in the perl
- assembly language builder. If this argument exists and is set
- to 1 it signals that the assembler should use a symbol whose
- scope is the entire file, not just the current function. This
- is needed with MASM which uses the format label:: for this scope.
- [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
-
- *) Change the ASN1 types so they are typedefs by default. Before
- almost all types were #define'd to ASN1_STRING which was causing
- STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
- for example.
- [Steve Henson]
-
- *) Change names of new functions to the new get1/get0 naming
- convention: After 'get1', the caller owns a reference count
- and has to call ..._free; 'get0' returns a pointer to some
- data structure without incrementing reference counters.
- (Some of the existing 'get' functions increment a reference
- counter, some don't.)
- Similarly, 'set1' and 'add1' functions increase reference
- counters or duplicate objects.
- [Steve Henson]
-
- *) Allow for the possibility of temp RSA key generation failure:
- the code used to assume it always worked and crashed on failure.
- [Steve Henson]
-
- *) Fix potential buffer overrun problem in BIO_printf().
- [Ulf Möller, using public domain code by Patrick Powell; problem
- pointed out by David Sacerdote <das33@cornell.edu>]
-
- *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
- RAND_egd() and RAND_status(). In the command line application,
- the EGD socket can be specified like a seed file using RANDFILE
- or -rand.
- [Ulf Möller]
-
- *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
- Some CAs (e.g. Verisign) distribute certificates in this form.
- [Steve Henson]
-
- *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
- list to exclude them. This means that no special compilation option
- is needed to use anonymous DH: it just needs to be included in the
- cipher list.
- [Steve Henson]
-
- *) Change the EVP_MD_CTX_type macro so its meaning consistent with
- EVP_MD_type. The old functionality is available in a new macro called
- EVP_MD_md(). Change code that uses it and update docs.
- [Steve Henson]
-
- *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
- where the 'void *' argument is replaced by a function pointer argument.
- Previously 'void *' was abused to point to functions, which works on
- many platforms, but is not correct. As these functions are usually
- called by macros defined in OpenSSL header files, most source code
- should work without changes.
- [Richard Levitte]
-
- *) <openssl/opensslconf.h> (which is created by Configure) now contains
- sections with information on -D... compiler switches used for
- compiling the library so that applications can see them. To enable
- one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
- must be defined. E.g.,
- #define OPENSSL_ALGORITHM_DEFINES
- #include <openssl/opensslconf.h>
- defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
- [Richard Levitte, Ulf and Bodo Möller]
-
- *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
- record layer.
- [Bodo Moeller]
-
- *) Change the 'other' type in certificate aux info to a STACK_OF
- X509_ALGOR. Although not an AlgorithmIdentifier as such it has
- the required ASN1 format: arbitrary types determined by an OID.
- [Steve Henson]
-
- *) Add some PEM_write_X509_REQ_NEW() functions and a command line
- argument to 'req'. This is not because the function is newer or
- better than others it just uses the work 'NEW' in the certificate
- request header lines. Some software needs this.
- [Steve Henson]
-
- *) Reorganise password command line arguments: now passwords can be
- obtained from various sources. Delete the PEM_cb function and make
- it the default behaviour: i.e. if the callback is NULL and the
- usrdata argument is not NULL interpret it as a null terminated pass
- phrase. If usrdata and the callback are NULL then the pass phrase
- is prompted for as usual.
- [Steve Henson]
-
- *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
- the support is automatically enabled. The resulting binaries will
- autodetect the card and use it if present.
- [Ben Laurie and Compaq Inc.]
-
- *) Work around for Netscape hang bug. This sends certificate request
- and server done in one record. Since this is perfectly legal in the
- SSL/TLS protocol it isn't a "bug" option and is on by default. See
- the bugs/SSLv3 entry for more info.
- [Steve Henson]
-
- *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
- [Andy Polyakov]
-
- *) Add -rand argument to smime and pkcs12 applications and read/write
- of seed file.
- [Steve Henson]
-
- *) New 'passwd' tool for crypt(3) and apr1 password hashes.
- [Bodo Moeller]
-
- *) Add command line password options to the remaining applications.
- [Steve Henson]
-
- *) Bug fix for BN_div_recp() for numerators with an even number of
- bits.
- [Ulf Möller]
-
- *) More tests in bntest.c, and changed test_bn output.
- [Ulf Möller]
-
- *) ./config recognizes MacOS X now.
- [Andy Polyakov]
-
- *) Bug fix for BN_div() when the first words of num and divisor are
- equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
- [Ulf Möller]
-
- *) Add support for various broken PKCS#8 formats, and command line
- options to produce them.
- [Steve Henson]
-
- *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
- get temporary BIGNUMs from a BN_CTX.
- [Ulf Möller]
-
- *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
- for p == 0.
- [Ulf Möller]
-
- *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
- include a #define from the old name to the new. The original intent
- was that statically linked binaries could for example just call
- SSLeay_add_all_ciphers() to just add ciphers to the table and not
- link with digests. This never worked because SSLeay_add_all_digests()
- and SSLeay_add_all_ciphers() were in the same source file so calling
- one would link with the other. They are now in separate source files.
- [Steve Henson]
-
- *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
- [Steve Henson]
-
- *) Use a less unusual form of the Miller-Rabin primality test (it used
- a binary algorithm for exponentiation integrated into the Miller-Rabin
- loop, our standard modexp algorithms are faster).
- [Bodo Moeller]
-
- *) Support for the EBCDIC character set completed.
- [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
-
- *) Source code cleanups: use const where appropriate, eliminate casts,
- use void * instead of char * in lhash.
- [Ulf Möller]
-
- *) Bugfix: ssl3_send_server_key_exchange was not restartable
- (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
- this the server could overwrite ephemeral keys that the client
- has already seen).
- [Bodo Moeller]
-
- *) Turn DSA_is_prime into a macro that calls BN_is_prime,
- using 50 iterations of the Rabin-Miller test.
-
- DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
- iterations of the Rabin-Miller test as required by the appendix
- to FIPS PUB 186[-1]) instead of DSA_is_prime.
- As BN_is_prime_fasttest includes trial division, DSA parameter
- generation becomes much faster.
-
- This implies a change for the callback functions in DSA_is_prime
- and DSA_generate_parameters: The callback function is called once
- for each positive witness in the Rabin-Miller test, not just
- occasionally in the inner loop; and the parameters to the
- callback function now provide an iteration count for the outer
- loop rather than for the current invocation of the inner loop.
- DSA_generate_parameters additionally can call the callback
- function with an 'iteration count' of -1, meaning that a
- candidate has passed the trial division test (when q is generated
- from an application-provided seed, trial division is skipped).
- [Bodo Moeller]
-
- *) New function BN_is_prime_fasttest that optionally does trial
- division before starting the Rabin-Miller test and has
- an additional BN_CTX * argument (whereas BN_is_prime always
- has to allocate at least one BN_CTX).
- 'callback(1, -1, cb_arg)' is called when a number has passed the
- trial division stage.
- [Bodo Moeller]
-
- *) Fix for bug in CRL encoding. The validity dates weren't being handled
- as ASN1_TIME.
- [Steve Henson]
-
- *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
- [Steve Henson]
-
- *) New function BN_pseudo_rand().
- [Ulf Möller]
-
- *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
- bignum version of BN_from_montgomery() with the working code from
- SSLeay 0.9.0 (the word based version is faster anyway), and clean up
- the comments.
- [Ulf Möller]
-
- *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
- made it impossible to use the same SSL_SESSION data structure in
- SSL2 clients in multiple threads.
- [Bodo Moeller]
-
- *) The return value of RAND_load_file() no longer counts bytes obtained
- by stat(). RAND_load_file(..., -1) is new and uses the complete file
- to seed the PRNG (previously an explicit byte count was required).
- [Ulf Möller, Bodo Möller]
-
- *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
- used (char *) instead of (void *) and had casts all over the place.
- [Steve Henson]
-
- *) Make BN_generate_prime() return NULL on error if ret!=NULL.
- [Ulf Möller]
-
- *) Retain source code compatibility for BN_prime_checks macro:
- BN_is_prime(..., BN_prime_checks, ...) now uses
- BN_prime_checks_for_size to determine the appropriate number of
- Rabin-Miller iterations.
- [Ulf Möller]
-
- *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
- DH_CHECK_P_NOT_SAFE_PRIME.
- (Check if this is true? OpenPGP calls them "strong".)
- [Ulf Möller]
-
- *) Merge the functionality of "dh" and "gendh" programs into a new program
- "dhparam". The old programs are retained for now but will handle DH keys
- (instead of parameters) in future.
- [Steve Henson]
-
- *) Make the ciphers, s_server and s_client programs check the return values
- when a new cipher list is set.
- [Steve Henson]
-
- *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
- ciphers. Before when the 56bit ciphers were enabled the sorting was
- wrong.
-
- The syntax for the cipher sorting has been extended to support sorting by
- cipher-strength (using the strength_bits hard coded in the tables).
- The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
-
- Fix a bug in the cipher-command parser: when supplying a cipher command
- string with an "undefined" symbol (neither command nor alphanumeric
- [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
- an error is flagged.
-
- Due to the strength-sorting extension, the code of the
- ssl_create_cipher_list() function was completely rearranged. I hope that
- the readability was also increased :-)
- [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
-
- *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
- for the first serial number and places 2 in the serial number file. This
- avoids problems when the root CA is created with serial number zero and
- the first user certificate has the same issuer name and serial number
- as the root CA.
- [Steve Henson]
-
- *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
- the new code. Add documentation for this stuff.
- [Steve Henson]
-
- *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
- X509_*() to X509at_*() on the grounds that they don't handle X509
- structures and behave in an analogous way to the X509v3 functions:
- they shouldn't be called directly but wrapper functions should be used
- instead.
-
- So we also now have some wrapper functions that call the X509at functions
- when passed certificate requests. (TO DO: similar things can be done with
- PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
- things. Some of these need some d2i or i2d and print functionality
- because they handle more complex structures.)
- [Steve Henson]
-
- *) Add missing #ifndefs that caused missing symbols when building libssl
- as a shared library without RSA. Use #ifndef NO_SSL2 instead of
- NO_RSA in ssl/s2*.c.
- [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
-
- *) Precautions against using the PRNG uninitialized: RAND_bytes() now
- has a return value which indicates the quality of the random data
- (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
- error queue. New function RAND_pseudo_bytes() generates output that is
- guaranteed to be unique but not unpredictable. RAND_add is like
- RAND_seed, but takes an extra argument for an entropy estimate
- (RAND_seed always assumes full entropy).
- [Ulf Möller]
-
- *) Do more iterations of Rabin-Miller probable prime test (specifically,
- 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
- instead of only 2 for all lengths; see BN_prime_checks_for_size definition
- in crypto/bn/bn_prime.c for the complete table). This guarantees a
- false-positive rate of at most 2^-80 for random input.
- [Bodo Moeller]
-
- *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
- [Bodo Moeller]
-
- *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
- in the 0.9.5 release), this returns the chain
- from an X509_CTX structure with a dup of the stack and all
- the X509 reference counts upped: so the stack will exist
- after X509_CTX_cleanup() has been called. Modify pkcs12.c
- to use this.
-
- Also make SSL_SESSION_print() print out the verify return
- code.
- [Steve Henson]
-
- *) Add manpage for the pkcs12 command. Also change the default
- behaviour so MAC iteration counts are used unless the new
- -nomaciter option is used. This improves file security and
- only older versions of MSIE (4.0 for example) need it.
- [Steve Henson]
-
- *) Honor the no-xxx Configure options when creating .DEF files.
- [Ulf Möller]
-
- *) Add PKCS#10 attributes to field table: challengePassword,
- unstructuredName and unstructuredAddress. These are taken from
- draft PKCS#9 v2.0 but are compatible with v1.2 provided no
- international characters are used.
-
- More changes to X509_ATTRIBUTE code: allow the setting of types
- based on strings. Remove the 'loc' parameter when adding
- attributes because these will be a SET OF encoding which is sorted
- in ASN1 order.
- [Steve Henson]
-
- *) Initial changes to the 'req' utility to allow request generation
- automation. This will allow an application to just generate a template
- file containing all the field values and have req construct the
- request.
-
- Initial support for X509_ATTRIBUTE handling. Stacks of these are
- used all over the place including certificate requests and PKCS#7
- structures. They are currently handled manually where necessary with
- some primitive wrappers for PKCS#7. The new functions behave in a
- manner analogous to the X509 extension functions: they allow
- attributes to be looked up by NID and added.
-
- Later something similar to the X509V3 code would be desirable to
- automatically handle the encoding, decoding and printing of the
- more complex types. The string types like challengePassword can
- be handled by the string table functions.
-
- Also modified the multi byte string table handling. Now there is
- a 'global mask' which masks out certain types. The table itself
- can use the flag STABLE_NO_MASK to ignore the mask setting: this
- is useful when for example there is only one permissible type
- (as in countryName) and using the mask might result in no valid
- types at all.
- [Steve Henson]
-
- *) Clean up 'Finished' handling, and add functions SSL_get_finished and
- SSL_get_peer_finished to allow applications to obtain the latest
- Finished messages sent to the peer or expected from the peer,
- respectively. (SSL_get_peer_finished is usually the Finished message
- actually received from the peer, otherwise the protocol will be aborted.)
-
- As the Finished message are message digests of the complete handshake
- (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
- be used for external authentication procedures when the authentication
- provided by SSL/TLS is not desired or is not enough.
- [Bodo Moeller]
-
- *) Enhanced support for Alpha Linux is added. Now ./config checks if
- the host supports BWX extension and if Compaq C is present on the
- $PATH. Just exploiting of the BWX extension results in 20-30%
- performance kick for some algorithms, e.g. DES and RC4 to mention
- a couple. Compaq C in turn generates ~20% faster code for MD5 and
- SHA1.
- [Andy Polyakov]
-
- *) Add support for MS "fast SGC". This is arguably a violation of the
- SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
- weak crypto and after checking the certificate is SGC a second one
- with strong crypto. MS SGC stops the first handshake after receiving
- the server certificate message and sends a second client hello. Since
- a server will typically do all the time consuming operations before
- expecting any further messages from the client (server key exchange
- is the most expensive) there is little difference between the two.
-
- To get OpenSSL to support MS SGC we have to permit a second client
- hello message after we have sent server done. In addition we have to
- reset the MAC if we do get this second client hello.
- [Steve Henson]
-
- *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
- if a DER encoded private key is RSA or DSA traditional format. Changed
- d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
- format DER encoded private key. Newer code should use PKCS#8 format which
- has the key type encoded in the ASN1 structure. Added DER private key
- support to pkcs8 application.
- [Steve Henson]
-
- *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
- ciphersuites has been selected (as required by the SSL 3/TLS 1
- specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
- is set, we interpret this as a request to violate the specification
- (the worst that can happen is a handshake failure, and 'correct'
- behaviour would result in a handshake failure anyway).
- [Bodo Moeller]
-
- *) In SSL_CTX_add_session, take into account that there might be multiple
- SSL_SESSION structures with the same session ID (e.g. when two threads
- concurrently obtain them from an external cache).
- The internal cache can handle only one SSL_SESSION with a given ID,
- so if there's a conflict, we now throw out the old one to achieve
- consistency.
- [Bodo Moeller]
-
- *) Add OIDs for idea and blowfish in CBC mode. This will allow both
- to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
- some routines that use cipher OIDs: some ciphers do not have OIDs
- defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
- example.
- [Steve Henson]
-
- *) Simplify the trust setting structure and code. Now we just have
- two sequences of OIDs for trusted and rejected settings. These will
- typically have values the same as the extended key usage extension
- and any application specific purposes.
-
- The trust checking code now has a default behaviour: it will just
- check for an object with the same NID as the passed id. Functions can
- be provided to override either the default behaviour or the behaviour
- for a given id. SSL client, server and email already have functions
- in place for compatibility: they check the NID and also return "trusted"
- if the certificate is self signed.
- [Steve Henson]
-
- *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
- traditional format into an EVP_PKEY structure.
- [Steve Henson]
-
- *) Add a password callback function PEM_cb() which either prompts for
- a password if usr_data is NULL or otherwise assumes it is a null
- terminated password. Allow passwords to be passed on command line
- environment or config files in a few more utilities.
- [Steve Henson]
-
- *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
- keys. Add some short names for PKCS#8 PBE algorithms and allow them
- to be specified on the command line for the pkcs8 and pkcs12 utilities.
- Update documentation.
- [Steve Henson]
-
- *) Support for ASN1 "NULL" type. This could be handled before by using
- ASN1_TYPE but there wasn't any function that would try to read a NULL
- and produce an error if it couldn't. For compatibility we also have
- ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
- don't allocate anything because they don't need to.
- [Steve Henson]
-
- *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
- for details.
- [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
-
- *) Rebuild of the memory allocation routines used by OpenSSL code and
- possibly others as well. The purpose is to make an interface that
- provide hooks so anyone can build a separate set of allocation and
- deallocation routines to be used by OpenSSL, for example memory
- pool implementations, or something else, which was previously hard
- since Malloc(), Realloc() and Free() were defined as macros having
- the values malloc, realloc and free, respectively (except for Win32
- compilations). The same is provided for memory debugging code.
- OpenSSL already comes with functionality to find memory leaks, but
- this gives people a chance to debug other memory problems.
-
- With these changes, a new set of functions and macros have appeared:
-
- CRYPTO_set_mem_debug_functions() [F]
- CRYPTO_get_mem_debug_functions() [F]
- CRYPTO_dbg_set_options() [F]
- CRYPTO_dbg_get_options() [F]
- CRYPTO_malloc_debug_init() [M]
-
- The memory debug functions are NULL by default, unless the library
- is compiled with CRYPTO_MDEBUG or friends is defined. If someone
- wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
- gives the standard debugging functions that come with OpenSSL) or
- CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
- provided by the library user) must be used. When the standard
- debugging functions are used, CRYPTO_dbg_set_options can be used to
- request additional information:
- CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
- the CRYPTO_MDEBUG_xxx macro when compiling the library.
-
- Also, things like CRYPTO_set_mem_functions will always give the
- expected result (the new set of functions is used for allocation
- and deallocation) at all times, regardless of platform and compiler
- options.
-
- To finish it up, some functions that were never use in any other
- way than through macros have a new API and new semantic:
-
- CRYPTO_dbg_malloc()
- CRYPTO_dbg_realloc()
- CRYPTO_dbg_free()
-
- All macros of value have retained their old syntax.
- [Richard Levitte and Bodo Moeller]
-
- *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
- ordering of SMIMECapabilities wasn't in "strength order" and there
- was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
- algorithm.
- [Steve Henson]
-
- *) Some ASN1 types with illegal zero length encoding (INTEGER,
- ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
- [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
-
- *) Merge in my S/MIME library for OpenSSL. This provides a simple
- S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
- functionality to handle multipart/signed properly) and a utility
- called 'smime' to call all this stuff. This is based on code I
- originally wrote for Celo who have kindly allowed it to be
- included in OpenSSL.
- [Steve Henson]
-
- *) Add variants des_set_key_checked and des_set_key_unchecked of
- des_set_key (aka des_key_sched). Global variable des_check_key
- decides which of these is called by des_set_key; this way
- des_check_key behaves as it always did, but applications and
- the library itself, which was buggy for des_check_key == 1,
- have a cleaner way to pick the version they need.
- [Bodo Moeller]
-
- *) New function PKCS12_newpass() which changes the password of a
- PKCS12 structure.
- [Steve Henson]
-
- *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
- dynamic mix. In both cases the ids can be used as an index into the
- table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
- functions so they accept a list of the field values and the
- application doesn't need to directly manipulate the X509_TRUST
- structure.
- [Steve Henson]
-
- *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
- need initialising.
- [Steve Henson]
-
- *) Modify the way the V3 extension code looks up extensions. This now
- works in a similar way to the object code: we have some "standard"
- extensions in a static table which is searched with OBJ_bsearch()
- and the application can add dynamic ones if needed. The file
- crypto/x509v3/ext_dat.h now has the info: this file needs to be
- updated whenever a new extension is added to the core code and kept
- in ext_nid order. There is a simple program 'tabtest.c' which checks
- this. New extensions are not added too often so this file can readily
- be maintained manually.
-
- There are two big advantages in doing things this way. The extensions
- can be looked up immediately and no longer need to be "added" using
- X509V3_add_standard_extensions(): this function now does nothing.
- [Side note: I get *lots* of email saying the extension code doesn't
- work because people forget to call this function]
- Also no dynamic allocation is done unless new extensions are added:
- so if we don't add custom extensions there is no need to call
- X509V3_EXT_cleanup().
- [Steve Henson]
-
- *) Modify enc utility's salting as follows: make salting the default. Add a
- magic header, so unsalted files fail gracefully instead of just decrypting
- to garbage. This is because not salting is a big security hole, so people
- should be discouraged from doing it.
- [Ben Laurie]
-
- *) Fixes and enhancements to the 'x509' utility. It allowed a message
- digest to be passed on the command line but it only used this
- parameter when signing a certificate. Modified so all relevant
- operations are affected by the digest parameter including the
- -fingerprint and -x509toreq options. Also -x509toreq choked if a
- DSA key was used because it didn't fix the digest.
- [Steve Henson]
-
- *) Initial certificate chain verify code. Currently tests the untrusted
- certificates for consistency with the verify purpose (which is set
- when the X509_STORE_CTX structure is set up) and checks the pathlength.
-
- There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
- this is because it will reject chains with invalid extensions whereas
- every previous version of OpenSSL and SSLeay made no checks at all.
-
- Trust code: checks the root CA for the relevant trust settings. Trust
- settings have an initial value consistent with the verify purpose: e.g.
- if the verify purpose is for SSL client use it expects the CA to be
- trusted for SSL client use. However the default value can be changed to
- permit custom trust settings: one example of this would be to only trust
- certificates from a specific "secure" set of CAs.
-
- Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
- which should be used for version portability: especially since the
- verify structure is likely to change more often now.
-
- SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
- to set them. If not set then assume SSL clients will verify SSL servers
- and vice versa.
-
- Two new options to the verify program: -untrusted allows a set of
- untrusted certificates to be passed in and -purpose which sets the
- intended purpose of the certificate. If a purpose is set then the
- new chain verify code is used to check extension consistency.
- [Steve Henson]
-
- *) Support for the authority information access extension.
- [Steve Henson]
-
- *) Modify RSA and DSA PEM read routines to transparently handle
- PKCS#8 format private keys. New *_PUBKEY_* functions that handle
- public keys in a format compatible with certificate
- SubjectPublicKeyInfo structures. Unfortunately there were already
- functions called *_PublicKey_* which used various odd formats so
- these are retained for compatibility: however the DSA variants were
- never in a public release so they have been deleted. Changed dsa/rsa
- utilities to handle the new format: note no releases ever handled public
- keys so we should be OK.
-
- The primary motivation for this change is to avoid the same fiasco
- that dogs private keys: there are several incompatible private key
- formats some of which are standard and some OpenSSL specific and
- require various evil hacks to allow partial transparent handling and
- even then it doesn't work with DER formats. Given the option anything
- other than PKCS#8 should be dumped: but the other formats have to
- stay in the name of compatibility.
-
- With public keys and the benefit of hindsight one standard format
- is used which works with EVP_PKEY, RSA or DSA structures: though
- it clearly returns an error if you try to read the wrong kind of key.
-
- Added a -pubkey option to the 'x509' utility to output the public key.
- Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
- (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
- EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
- that do the same as the EVP_PKEY_assign_*() except they up the
- reference count of the added key (they don't "swallow" the
- supplied key).
- [Steve Henson]
-
- *) Fixes to crypto/x509/by_file.c the code to read in certificates and
- CRLs would fail if the file contained no certificates or no CRLs:
- added a new function to read in both types and return the number
- read: this means that if none are read it will be an error. The
- DER versions of the certificate and CRL reader would always fail
- because it isn't possible to mix certificates and CRLs in DER format
- without choking one or the other routine. Changed this to just read
- a certificate: this is the best we can do. Also modified the code
- in apps/verify.c to take notice of return codes: it was previously
- attempting to read in certificates from NULL pointers and ignoring
- any errors: this is one reason why the cert and CRL reader seemed
- to work. It doesn't check return codes from the default certificate
- routines: these may well fail if the certificates aren't installed.
- [Steve Henson]
-
- *) Code to support otherName option in GeneralName.
- [Steve Henson]
-
- *) First update to verify code. Change the verify utility
- so it warns if it is passed a self signed certificate:
- for consistency with the normal behaviour. X509_verify
- has been modified to it will now verify a self signed
- certificate if *exactly* the same certificate appears
- in the store: it was previously impossible to trust a
- single self signed certificate. This means that:
- openssl verify ss.pem
- now gives a warning about a self signed certificate but
- openssl verify -CAfile ss.pem ss.pem
- is OK.
- [Steve Henson]
-
- *) For servers, store verify_result in SSL_SESSION data structure
- (and add it to external session representation).
- This is needed when client certificate verifications fails,
- but an application-provided verification callback (set by
- SSL_CTX_set_cert_verify_callback) allows accepting the session
- anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
- but returns 1): When the session is reused, we have to set
- ssl->verify_result to the appropriate error code to avoid
- security holes.
- [Bodo Moeller, problem pointed out by Lutz Jaenicke]
-
- *) Fix a bug in the new PKCS#7 code: it didn't consider the
- case in PKCS7_dataInit() where the signed PKCS7 structure
- didn't contain any existing data because it was being created.
- [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
-
- *) Add a salt to the key derivation routines in enc.c. This
- forms the first 8 bytes of the encrypted file. Also add a
- -S option to allow a salt to be input on the command line.
- [Steve Henson]
-
- *) New function X509_cmp(). Oddly enough there wasn't a function
- to compare two certificates. We do this by working out the SHA1
- hash and comparing that. X509_cmp() will be needed by the trust
- code.
- [Steve Henson]
-
- *) SSL_get1_session() is like SSL_get_session(), but increments
- the reference count in the SSL_SESSION returned.
- [Geoff Thorpe <geoff@eu.c2.net>]
-
- *) Fix for 'req': it was adding a null to request attributes.
- Also change the X509_LOOKUP and X509_INFO code to handle
- certificate auxiliary information.
- [Steve Henson]
-
- *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
- the 'enc' command.
- [Steve Henson]
-
- *) Add the possibility to add extra information to the memory leak
- detecting output, to form tracebacks, showing from where each
- allocation was originated: CRYPTO_push_info("constant string") adds
- the string plus current file name and line number to a per-thread
- stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
- is like calling CYRPTO_pop_info() until the stack is empty.
- Also updated memory leak detection code to be multi-thread-safe.
- [Richard Levitte]
-
- *) Add options -text and -noout to pkcs7 utility and delete the
- encryption options which never did anything. Update docs.
- [Steve Henson]
-
- *) Add options to some of the utilities to allow the pass phrase
- to be included on either the command line (not recommended on
- OSes like Unix) or read from the environment. Update the
- manpages and fix a few bugs.
- [Steve Henson]
-
- *) Add a few manpages for some of the openssl commands.
- [Steve Henson]
-
- *) Fix the -revoke option in ca. It was freeing up memory twice,
- leaking and not finding already revoked certificates.
- [Steve Henson]
-
- *) Extensive changes to support certificate auxiliary information.
- This involves the use of X509_CERT_AUX structure and X509_AUX
- functions. An X509_AUX function such as PEM_read_X509_AUX()
- can still read in a certificate file in the usual way but it
- will also read in any additional "auxiliary information". By
- doing things this way a fair degree of compatibility can be
- retained: existing certificates can have this information added
- using the new 'x509' options.
-
- Current auxiliary information includes an "alias" and some trust
- settings. The trust settings will ultimately be used in enhanced
- certificate chain verification routines: currently a certificate
- can only be trusted if it is self signed and then it is trusted
- for all purposes.
- [Steve Henson]
-
- *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
- The problem was that one of the replacement routines had not been working
- since SSLeay releases. For now the offending routine has been replaced
- with non-optimised assembler. Even so, this now gives around 95%
- performance improvement for 1024 bit RSA signs.
- [Mark Cox]
-
- *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
- handling. Most clients have the effective key size in bits equal to
- the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
- A few however don't do this and instead use the size of the decrypted key
- to determine the RC2 key length and the AlgorithmIdentifier to determine
- the effective key length. In this case the effective key length can still
- be 40 bits but the key length can be 168 bits for example. This is fixed
- by manually forcing an RC2 key into the EVP_PKEY structure because the
- EVP code can't currently handle unusual RC2 key sizes: it always assumes
- the key length and effective key length are equal.
- [Steve Henson]
-
- *) Add a bunch of functions that should simplify the creation of
- X509_NAME structures. Now you should be able to do:
- X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
- and have it automatically work out the correct field type and fill in
- the structures. The more adventurous can try:
- X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
- and it will (hopefully) work out the correct multibyte encoding.
- [Steve Henson]
-
- *) Change the 'req' utility to use the new field handling and multibyte
- copy routines. Before the DN field creation was handled in an ad hoc
- way in req, ca, and x509 which was rather broken and didn't support
- BMPStrings or UTF8Strings. Since some software doesn't implement
- BMPStrings or UTF8Strings yet, they can be enabled using the config file
- using the dirstring_type option. See the new comment in the default
- openssl.cnf for more info.
- [Steve Henson]
-
- *) Make crypto/rand/md_rand.c more robust:
- - Assure unique random numbers after fork().
- - Make sure that concurrent threads access the global counter and
- md serializably so that we never lose entropy in them
- or use exactly the same state in multiple threads.
- Access to the large state is not always serializable because
- the additional locking could be a performance killer, and
- md should be large enough anyway.
- [Bodo Moeller]
-
- *) New file apps/app_rand.c with commonly needed functionality
- for handling the random seed file.
-
- Use the random seed file in some applications that previously did not:
- ca,
- dsaparam -genkey (which also ignored its '-rand' option),
- s_client,
- s_server,
- x509 (when signing).
- Except on systems with /dev/urandom, it is crucial to have a random
- seed file at least for key creation, DSA signing, and for DH exchanges;
- for RSA signatures we could do without one.
-
- gendh and gendsa (unlike genrsa) used to read only the first byte
- of each file listed in the '-rand' option. The function as previously
- found in genrsa is now in app_rand.c and is used by all programs
- that support '-rand'.
- [Bodo Moeller]
-
- *) In RAND_write_file, use mode 0600 for creating files;
- don't just chmod when it may be too late.
- [Bodo Moeller]
-
- *) Report an error from X509_STORE_load_locations
- when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
- [Bill Perry]
-
- *) New function ASN1_mbstring_copy() this copies a string in either
- ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
- into an ASN1_STRING type. A mask of permissible types is passed
- and it chooses the "minimal" type to use or an error if not type
- is suitable.
- [Steve Henson]
-
- *) Add function equivalents to the various macros in asn1.h. The old
- macros are retained with an M_ prefix. Code inside the library can
- use the M_ macros. External code (including the openssl utility)
- should *NOT* in order to be "shared library friendly".
- [Steve Henson]
-
- *) Add various functions that can check a certificate's extensions
- to see if it usable for various purposes such as SSL client,
- server or S/MIME and CAs of these types. This is currently
- VERY EXPERIMENTAL but will ultimately be used for certificate chain
- verification. Also added a -purpose flag to x509 utility to
- print out all the purposes.
- [Steve Henson]
-
- *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
- functions.
- [Steve Henson]
-
- *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
- for, obtain and decode and extension and obtain its critical flag.
- This allows all the necessary extension code to be handled in a
- single function call.
- [Steve Henson]
-
- *) RC4 tune-up featuring 30-40% performance improvement on most RISC
- platforms. See crypto/rc4/rc4_enc.c for further details.
- [Andy Polyakov]
-
- *) New -noout option to asn1parse. This causes no output to be produced
- its main use is when combined with -strparse and -out to extract data
- from a file (which may not be in ASN.1 format).
- [Steve Henson]
-
- *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
- when producing the local key id.
- [Richard Levitte <levitte@stacken.kth.se>]
-
- *) New option -dhparam in s_server. This allows a DH parameter file to be
- stated explicitly. If it is not stated then it tries the first server
- certificate file. The previous behaviour hard coded the filename
- "server.pem".
- [Steve Henson]
-
- *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
- a public key to be input or output. For example:
- openssl rsa -in key.pem -pubout -out pubkey.pem
- Also added necessary DSA public key functions to handle this.
- [Steve Henson]
-
- *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
- in the message. This was handled by allowing
- X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
- [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
-
- *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
- to the end of the strings whereas this didn't. This would cause problems
- if strings read with d2i_ASN1_bytes() were later modified.
- [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
-
- *) Fix for base64 decode bug. When a base64 bio reads only one line of
- data and it contains EOF it will end up returning an error. This is
- caused by input 46 bytes long. The cause is due to the way base64
- BIOs find the start of base64 encoded data. They do this by trying a
- trial decode on each line until they find one that works. When they
- do a flag is set and it starts again knowing it can pass all the
- data directly through the decoder. Unfortunately it doesn't reset
- the context it uses. This means that if EOF is reached an attempt
- is made to pass two EOFs through the context and this causes the
- resulting error. This can also cause other problems as well. As is
- usual with these problems it takes *ages* to find and the fix is
- trivial: move one line.
- [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
-
- *) Ugly workaround to get s_client and s_server working under Windows. The
- old code wouldn't work because it needed to select() on sockets and the
- tty (for keypresses and to see if data could be written). Win32 only
- supports select() on sockets so we select() with a 1s timeout on the
- sockets and then see if any characters are waiting to be read, if none
- are present then we retry, we also assume we can always write data to
- the tty. This isn't nice because the code then blocks until we've
- received a complete line of data and it is effectively polling the
- keyboard at 1s intervals: however it's quite a bit better than not
- working at all :-) A dedicated Windows application might handle this
- with an event loop for example.
- [Steve Henson]
-
- *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
- and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
- will be called when RSA_sign() and RSA_verify() are used. This is useful
- if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
- For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
- should *not* be used: RSA_sign() and RSA_verify() must be used instead.
- This necessitated the support of an extra signature type NID_md5_sha1
- for SSL signatures and modifications to the SSL library to use it instead
- of calling RSA_public_decrypt() and RSA_private_encrypt().
- [Steve Henson]
-
- *) Add new -verify -CAfile and -CApath options to the crl program, these
- will lookup a CRL issuers certificate and verify the signature in a
- similar way to the verify program. Tidy up the crl program so it
- no longer accesses structures directly. Make the ASN1 CRL parsing a bit
- less strict. It will now permit CRL extensions even if it is not
- a V2 CRL: this will allow it to tolerate some broken CRLs.
- [Steve Henson]
-
- *) Initialize all non-automatic variables each time one of the openssl
- sub-programs is started (this is necessary as they may be started
- multiple times from the "OpenSSL>" prompt).
- [Lennart Bang, Bodo Moeller]
-
- *) Preliminary compilation option RSA_NULL which disables RSA crypto without
- removing all other RSA functionality (this is what NO_RSA does). This
- is so (for example) those in the US can disable those operations covered
- by the RSA patent while allowing storage and parsing of RSA keys and RSA
- key generation.
- [Steve Henson]
-
- *) Non-copying interface to BIO pairs.
- (still largely untested)
- [Bodo Moeller]
-
- *) New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
- ASCII string. This was handled independently in various places before.
- [Steve Henson]
-
- *) New functions UTF8_getc() and UTF8_putc() that parse and generate
- UTF8 strings a character at a time.
- [Steve Henson]
-
- *) Use client_version from client hello to select the protocol
- (s23_srvr.c) and for RSA client key exchange verification
- (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
- [Bodo Moeller]
-
- *) Add various utility functions to handle SPKACs, these were previously
- handled by poking round in the structure internals. Added new function
- NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
- print, verify and generate SPKACs. Based on an original idea from
- Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
- [Steve Henson]
-
- *) RIPEMD160 is operational on all platforms and is back in 'make test'.
- [Andy Polyakov]
-
- *) Allow the config file extension section to be overwritten on the
- command line. Based on an original idea from Massimiliano Pala
- <madwolf@comune.modena.it>. The new option is called -extensions
- and can be applied to ca, req and x509. Also -reqexts to override
- the request extensions in req and -crlexts to override the crl extensions
- in ca.
- [Steve Henson]
-
- *) Add new feature to the SPKAC handling in ca. Now you can include
- the same field multiple times by preceding it by "XXXX." for example:
- 1.OU="Unit name 1"
- 2.OU="Unit name 2"
- this is the same syntax as used in the req config file.
- [Steve Henson]
-
- *) Allow certificate extensions to be added to certificate requests. These
- are specified in a 'req_extensions' option of the req section of the
- config file. They can be printed out with the -text option to req but
- are otherwise ignored at present.
- [Steve Henson]
-
- *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
- data read consists of only the final block it would not decrypted because
- EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
- A misplaced 'break' also meant the decrypted final block might not be
- copied until the next read.
- [Steve Henson]
-
- *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
- a few extra parameters to the DH structure: these will be useful if
- for example we want the value of 'q' or implement X9.42 DH.
- [Steve Henson]
-
- *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
- provides hooks that allow the default DSA functions or functions on a
- "per key" basis to be replaced. This allows hardware acceleration and
- hardware key storage to be handled without major modification to the
- library. Also added low level modexp hooks and CRYPTO_EX structure and
- associated functions.
- [Steve Henson]
-
- *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
- as "read only": it can't be written to and the buffer it points to will
- not be freed. Reading from a read only BIO is much more efficient than
- a normal memory BIO. This was added because there are several times when
- an area of memory needs to be read from a BIO. The previous method was
- to create a memory BIO and write the data to it, this results in two
- copies of the data and an O(n^2) reading algorithm. There is a new
- function BIO_new_mem_buf() which creates a read only memory BIO from
- an area of memory. Also modified the PKCS#7 routines to use read only
- memory BIOs.
- [Steve Henson]
-
- *) Bugfix: ssl23_get_client_hello did not work properly when called in
- state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
- a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
- but a retry condition occurred while trying to read the rest.
- [Bodo Moeller]
-
- *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
- NID_pkcs7_encrypted by default: this was wrong since this should almost
- always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
- the encrypted data type: this is a more sensible place to put it and it
- allows the PKCS#12 code to be tidied up that duplicated this
- functionality.
- [Steve Henson]
-
- *) Changed obj_dat.pl script so it takes its input and output files on
- the command line. This should avoid shell escape redirection problems
- under Win32.
- [Steve Henson]
-
- *) Initial support for certificate extension requests, these are included
- in things like Xenroll certificate requests. Included functions to allow
- extensions to be obtained and added.
- [Steve Henson]
-
- *) -crlf option to s_client and s_server for sending newlines as
- CRLF (as required by many protocols).
- [Bodo Moeller]
-
- Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
-
- *) Install libRSAglue.a when OpenSSL is built with RSAref.
- [Ralf S. Engelschall]
-
- *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
- [Andrija Antonijevic <TheAntony2@bigfoot.com>]
-
- *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
- program.
- [Steve Henson]
-
- *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
- DH parameters/keys (q is lost during that conversion, but the resulting
- DH parameters contain its length).
-
- For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
- much faster than DH_generate_parameters (which creates parameters
- where p = 2*q + 1), and also the smaller q makes DH computations
- much more efficient (160-bit exponentiation instead of 1024-bit
- exponentiation); so this provides a convenient way to support DHE
- ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
- utter importance to use
- SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
- or
- SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
- when such DH parameters are used, because otherwise small subgroup
- attacks may become possible!
- [Bodo Moeller]
-
- *) Avoid memory leak in i2d_DHparams.
- [Bodo Moeller]
-
- *) Allow the -k option to be used more than once in the enc program:
- this allows the same encrypted message to be read by multiple recipients.
- [Steve Henson]
-
- *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
- an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
- it will always use the numerical form of the OID, even if it has a short
- or long name.
- [Steve Henson]
-
- *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
- method only got called if p,q,dmp1,dmq1,iqmp components were present,
- otherwise bn_mod_exp was called. In the case of hardware keys for example
- no private key components need be present and it might store extra data
- in the RSA structure, which cannot be accessed from bn_mod_exp.
- By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
- private key operations.
- [Steve Henson]
-
- *) Added support for SPARC Linux.
- [Andy Polyakov]
-
- *) pem_password_cb function type incompatibly changed from
- typedef int pem_password_cb(char *buf, int size, int rwflag);
- to
- ....(char *buf, int size, int rwflag, void *userdata);
- so that applications can pass data to their callbacks:
- The PEM[_ASN1]_{read,write}... functions and macros now take an
- additional void * argument, which is just handed through whenever
- the password callback is called.
- [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
-
- New function SSL_CTX_set_default_passwd_cb_userdata.
-
- Compatibility note: As many C implementations push function arguments
- onto the stack in reverse order, the new library version is likely to
- interoperate with programs that have been compiled with the old
- pem_password_cb definition (PEM_whatever takes some data that
- happens to be on the stack as its last argument, and the callback
- just ignores this garbage); but there is no guarantee whatsoever that
- this will work.
-
- *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
- (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
- problems not only on Windows, but also on some Unix platforms.
- To avoid problematic command lines, these definitions are now in an
- auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
- for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
- [Bodo Moeller]
-
- *) MIPS III/IV assembler module is reimplemented.
- [Andy Polyakov]
-
- *) More DES library cleanups: remove references to srand/rand and
- delete an unused file.
- [Ulf Möller]
-
- *) Add support for the free Netwide assembler (NASM) under Win32,
- since not many people have MASM (ml) and it can be hard to obtain.
- This is currently experimental but it seems to work OK and pass all
- the tests. Check out INSTALL.W32 for info.
- [Steve Henson]
-
- *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
- without temporary keys kept an extra copy of the server key,
- and connections with temporary keys did not free everything in case
- of an error.
- [Bodo Moeller]
-
- *) New function RSA_check_key and new openssl rsa option -check
- for verifying the consistency of RSA keys.
- [Ulf Moeller, Bodo Moeller]
-
- *) Various changes to make Win32 compile work:
- 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
- 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
- comparison" warnings.
- 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
- [Steve Henson]
-
- *) Add a debugging option to PKCS#5 v2 key generation function: when
- you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
- derived keys are printed to stderr.
- [Steve Henson]
-
- *) Copy the flags in ASN1_STRING_dup().
- [Roman E. Pavlov <pre@mo.msk.ru>]
-
- *) The x509 application mishandled signing requests containing DSA
- keys when the signing key was also DSA and the parameters didn't match.
-
- It was supposed to omit the parameters when they matched the signing key:
- the verifying software was then supposed to automatically use the CA's
- parameters if they were absent from the end user certificate.
-
- Omitting parameters is no longer recommended. The test was also
- the wrong way round! This was probably due to unusual behaviour in
- EVP_cmp_parameters() which returns 1 if the parameters match.
- This meant that parameters were omitted when they *didn't* match and
- the certificate was useless. Certificates signed with 'ca' didn't have
- this bug.
- [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
-
- *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
- The interface is as follows:
- Applications can use
- CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
- CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
- "off" is now the default.
- The library internally uses
- CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
- CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
- to disable memory-checking temporarily.
-
- Some inconsistent states that previously were possible (and were
- even the default) are now avoided.
-
- -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
- with each memory chunk allocated; this is occasionally more helpful
- than just having a counter.
-
- -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
-
- -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
- extensions.
- [Bodo Moeller]
-
- *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
- which largely parallels "options", but is for changing API behaviour,
- whereas "options" are about protocol behaviour.
- Initial "mode" flags are:
-
- SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
- a single record has been written.
- SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
- retries use the same buffer location.
- (But all of the contents must be
- copied!)
- [Bodo Moeller]
-
- *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
- worked.
-
- *) Fix problems with no-hmac etc.
- [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
-
- *) New functions RSA_get_default_method(), RSA_set_method() and
- RSA_get_method(). These allows replacement of RSA_METHODs without having
- to mess around with the internals of an RSA structure.
- [Steve Henson]
-
- *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
- Also really enable memory leak checks in openssl.c and in some
- test programs.
- [Chad C. Mulligan, Bodo Moeller]
-
- *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
- up the length of negative integers. This has now been simplified to just
- store the length when it is first determined and use it later, rather
- than trying to keep track of where data is copied and updating it to
- point to the end.
- [Steve Henson, reported by Brien Wheeler
- <bwheeler@authentica-security.com>]
-
- *) Add a new function PKCS7_signatureVerify. This allows the verification
- of a PKCS#7 signature but with the signing certificate passed to the
- function itself. This contrasts with PKCS7_dataVerify which assumes the
- certificate is present in the PKCS#7 structure. This isn't always the
- case: certificates can be omitted from a PKCS#7 structure and be
- distributed by "out of band" means (such as a certificate database).
- [Steve Henson]
-
- *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
- function prototypes in pem.h, also change util/mkdef.pl to add the
- necessary function names.
- [Steve Henson]
-
- *) mk1mf.pl (used by Windows builds) did not properly read the
- options set by Configure in the top level Makefile, and Configure
- was not even able to write more than one option correctly.
- Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
- [Bodo Moeller]
-
- *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
- file to be loaded from a BIO or FILE pointer. The BIO version will
- for example allow memory BIOs to contain config info.
- [Steve Henson]
-
- *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
- Whoever hopes to achieve shared-library compatibility across versions
- must use this, not the compile-time macro.
- (Exercise 0.9.4: Which is the minimum library version required by
- such programs?)
- Note: All this applies only to multi-threaded programs, others don't
- need locks.
- [Bodo Moeller]
-
- *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
- through a BIO pair triggered the default case, i.e.
- SSLerr(...,SSL_R_UNKNOWN_STATE).
- [Bodo Moeller]
-
- *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
- can use the SSL library even if none of the specific BIOs is
- appropriate.
- [Bodo Moeller]
-
- *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
- for the encoded length.
- [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
-
- *) Add initial documentation of the X509V3 functions.
- [Steve Henson]
-
- *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
- PEM_write_bio_PKCS8PrivateKey() that are equivalent to
- PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
- secure PKCS#8 private key format with a high iteration count.
- [Steve Henson]
-
- *) Fix determination of Perl interpreter: A perl or perl5
- _directory_ in $PATH was also accepted as the interpreter.
- [Ralf S. Engelschall]
-
- *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
- wrong with it but it was very old and did things like calling
- PEM_ASN1_read() directly and used MD5 for the hash not to mention some
- unusual formatting.
- [Steve Henson]
-
- *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
- to use the new extension code.
- [Steve Henson]
-
- *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
- with macros. This should make it easier to change their form, add extra
- arguments etc. Fix a few PEM prototypes which didn't have cipher as a
- constant.
- [Steve Henson]
-
- *) Add to configuration table a new entry that can specify an alternative
- name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
- according to Mark Crispin <MRC@Panda.COM>.
- [Bodo Moeller]
-
-#if 0
- *) DES CBC did not update the IV. Weird.
- [Ben Laurie]
-#else
- des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
- Changing the behaviour of the former might break existing programs --
- where IV updating is needed, des_ncbc_encrypt can be used.
-#endif
-
- *) When bntest is run from "make test" it drives bc to check its
- calculations, as well as internally checking them. If an internal check
- fails, it needs to cause bc to give a non-zero result or make test carries
- on without noticing the failure. Fixed.
- [Ben Laurie]
-
- *) DES library cleanups.
- [Ulf Möller]
-
- *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
- used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
- ciphers. NOTE: although the key derivation function has been verified
- against some published test vectors it has not been extensively tested
- yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
- of v2.0.
- [Steve Henson]
-
- *) Instead of "mkdir -p", which is not fully portable, use new
- Perl script "util/mkdir-p.pl".
- [Bodo Moeller]
-
- *) Rewrite the way password based encryption (PBE) is handled. It used to
- assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
- structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
- but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
- the 'parameter' field of the AlgorithmIdentifier is passed to the
- underlying key generation function so it must do its own ASN1 parsing.
- This has also changed the EVP_PBE_CipherInit() function which now has a
- 'parameter' argument instead of literal salt and iteration count values
- and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
- [Steve Henson]
-
- *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
- and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
- Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
- KEY" because this clashed with PKCS#8 unencrypted string. Since this
- value was just used as a "magic string" and not used directly its
- value doesn't matter.
- [Steve Henson]
-
- *) Introduce some semblance of const correctness to BN. Shame C doesn't
- support mutable.
- [Ben Laurie]
-
- *) "linux-sparc64" configuration (ultrapenguin).
- [Ray Miller <ray.miller@oucs.ox.ac.uk>]
- "linux-sparc" configuration.
- [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
-
- *) config now generates no-xxx options for missing ciphers.
- [Ulf Möller]
-
- *) Support the EBCDIC character set (work in progress).
- File ebcdic.c not yet included because it has a different license.
- [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
-
- *) Support BS2000/OSD-POSIX.
- [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
-
- *) Make callbacks for key generation use void * instead of char *.
- [Ben Laurie]
-
- *) Make S/MIME samples compile (not yet tested).
- [Ben Laurie]
-
- *) Additional typesafe stacks.
- [Ben Laurie]
-
- *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
- [Bodo Moeller]
-
-
- Changes between 0.9.3 and 0.9.3a [29 May 1999]
-
- *) New configuration variant "sco5-gcc".
-
- *) Updated some demos.
- [Sean O Riordain, Wade Scholine]
-
- *) Add missing BIO_free at exit of pkcs12 application.
- [Wu Zhigang]
-
- *) Fix memory leak in conf.c.
- [Steve Henson]
-
- *) Updates for Win32 to assembler version of MD5.
- [Steve Henson]
-
- *) Set #! path to perl in apps/der_chop to where we found it
- instead of using a fixed path.
- [Bodo Moeller]
-
- *) SHA library changes for irix64-mips4-cc.
- [Andy Polyakov]
-
- *) Improvements for VMS support.
- [Richard Levitte]
-
-
- Changes between 0.9.2b and 0.9.3 [24 May 1999]
-
- *) Bignum library bug fix. IRIX 6 passes "make test" now!
- This also avoids the problems with SC4.2 and unpatched SC5.
- [Andy Polyakov <appro@fy.chalmers.se>]
-
- *) New functions sk_num, sk_value and sk_set to replace the previous macros.
- These are required because of the typesafe stack would otherwise break
- existing code. If old code used a structure member which used to be STACK
- and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
- sk_num or sk_value it would produce an error because the num, data members
- are not present in STACK_OF. Now it just produces a warning. sk_set
- replaces the old method of assigning a value to sk_value
- (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
- that does this will no longer work (and should use sk_set instead) but
- this could be regarded as a "questionable" behaviour anyway.
- [Steve Henson]
-
- *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
- correctly handle encrypted S/MIME data.
- [Steve Henson]
-
- *) Change type of various DES function arguments from des_cblock
- (which means, in function argument declarations, pointer to char)
- to des_cblock * (meaning pointer to array with 8 char elements),
- which allows the compiler to do more typechecking; it was like
- that back in SSLeay, but with lots of ugly casts.
-
- Introduce new type const_des_cblock.
- [Bodo Moeller]
-
- *) Reorganise the PKCS#7 library and get rid of some of the more obvious
- problems: find RecipientInfo structure that matches recipient certificate
- and initialise the ASN1 structures properly based on passed cipher.
- [Steve Henson]
-
- *) Belatedly make the BN tests actually check the results.
- [Ben Laurie]
+ * Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
+ This checks that the salt length is at least 128 bits, the derived key
+ length is at least 112 bits, and that the iteration count is at least 1000.
+ For backwards compatibility these checks are disabled by default in the
+ default provider, but are enabled by default in the fips provider.
+ To enable or disable these checks use the control
+ EVP_KDF_CTRL_SET_PBKDF2_PKCS5_MODE.
- *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
- to and from BNs: it was completely broken. New compilation option
- NEG_PUBKEY_BUG to allow for some broken certificates that encode public
- key elements as negative integers.
- [Steve Henson]
+ *Shane Lontis*
- *) Reorganize and speed up MD5.
- [Andy Polyakov <appro@fy.chalmers.se>]
+ * Default cipher lists/suites are now available via a function, the
+ #defines are deprecated.
- *) VMS support.
- [Richard Levitte <richard@levitte.org>]
-
- *) New option -out to asn1parse to allow the parsed structure to be
- output to a file. This is most useful when combined with the -strparse
- option to examine the output of things like OCTET STRINGS.
- [Steve Henson]
-
- *) Make SSL library a little more fool-proof by not requiring any longer
- that SSL_set_{accept,connect}_state be called before
- SSL_{accept,connect} may be used (SSL_set_..._state is omitted
- in many applications because usually everything *appeared* to work as
- intended anyway -- now it really works as intended).
- [Bodo Moeller]
-
- *) Move openssl.cnf out of lib/.
- [Ulf Möller]
-
- *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
- -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
- -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
- [Ralf S. Engelschall]
-
- *) Various fixes to the EVP and PKCS#7 code. It may now be able to
- handle PKCS#7 enveloped data properly.
- [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
-
- *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
- copying pointers. The cert_st handling is changed by this in
- various ways (and thus what used to be known as ctx->default_cert
- is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
- any longer when s->cert does not give us what we need).
- ssl_cert_instantiate becomes obsolete by this change.
- As soon as we've got the new code right (possibly it already is?),
- we have solved a couple of bugs of the earlier code where s->cert
- was used as if it could not have been shared with other SSL structures.
-
- Note that using the SSL API in certain dirty ways now will result
- in different behaviour than observed with earlier library versions:
- Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
- does not influence s as it used to.
-
- In order to clean up things more thoroughly, inside SSL_SESSION
- we don't use CERT any longer, but a new structure SESS_CERT
- that holds per-session data (if available); currently, this is
- the peer's certificate chain and, for clients, the server's certificate
- and temporary key. CERT holds only those values that can have
- meaningful defaults in an SSL_CTX.
- [Bodo Moeller]
-
- *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
- from the internal representation. Various PKCS#7 fixes: remove some
- evil casts and set the enc_dig_alg field properly based on the signing
- key type.
- [Steve Henson]
-
- *) Allow PKCS#12 password to be set from the command line or the
- environment. Let 'ca' get its config file name from the environment
- variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
- and 'x509').
- [Steve Henson]
-
- *) Allow certificate policies extension to use an IA5STRING for the
- organization field. This is contrary to the PKIX definition but
- VeriSign uses it and IE5 only recognises this form. Document 'x509'
- extension option.
- [Steve Henson]
-
- *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
- without disallowing inline assembler and the like for non-pedantic builds.
- [Ben Laurie]
-
- *) Support Borland C++ builder.
- [Janez Jere <jj@void.si>, modified by Ulf Möller]
-
- *) Support Mingw32.
- [Ulf Möller]
-
- *) SHA-1 cleanups and performance enhancements.
- [Andy Polyakov <appro@fy.chalmers.se>]
-
- *) Sparc v8plus assembler for the bignum library.
- [Andy Polyakov <appro@fy.chalmers.se>]
-
- *) Accept any -xxx and +xxx compiler options in Configure.
- [Ulf Möller]
-
- *) Update HPUX configuration.
- [Anonymous]
-
- *) Add missing sk_<type>_unshift() function to safestack.h
- [Ralf S. Engelschall]
-
- *) New function SSL_CTX_use_certificate_chain_file that sets the
- "extra_cert"s in addition to the certificate. (This makes sense
- only for "PEM" format files, as chains as a whole are not
- DER-encoded.)
- [Bodo Moeller]
-
- *) Support verify_depth from the SSL API.
- x509_vfy.c had what can be considered an off-by-one-error:
- Its depth (which was not part of the external interface)
- was actually counting the number of certificates in a chain;
- now it really counts the depth.
- [Bodo Moeller]
-
- *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
- instead of X509err, which often resulted in confusing error
- messages since the error codes are not globally unique
- (e.g. an alleged error in ssl3_accept when a certificate
- didn't match the private key).
-
- *) New function SSL_CTX_set_session_id_context that allows to set a default
- value (so that you don't need SSL_set_session_id_context for each
- connection using the SSL_CTX).
- [Bodo Moeller]
-
- *) OAEP decoding bug fix.
- [Ulf Möller]
-
- *) Support INSTALL_PREFIX for package builders, as proposed by
- David Harris.
- [Bodo Moeller]
-
- *) New Configure options "threads" and "no-threads". For systems
- where the proper compiler options are known (currently Solaris
- and Linux), "threads" is the default.
- [Bodo Moeller]
-
- *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
- [Bodo Moeller]
-
- *) Install various scripts to $(OPENSSLDIR)/misc, not to
- $(INSTALLTOP)/bin -- they shouldn't clutter directories
- such as /usr/local/bin.
- [Bodo Moeller]
-
- *) "make linux-shared" to build shared libraries.
- [Niels Poppe <niels@netbox.org>]
-
- *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
- [Ulf Möller]
-
- *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
- extension adding in x509 utility.
- [Steve Henson]
+ *Todd Short*
- *) Remove NOPROTO sections and error code comments.
- [Ulf Möller]
+ * Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
+ VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
+ for Windows Store apps easier. Also, the "no-uplink" option has been added.
- *) Partial rewrite of the DEF file generator to now parse the ANSI
- prototypes.
- [Steve Henson]
+ *Kenji Mouri*
- *) New Configure options --prefix=DIR and --openssldir=DIR.
- [Ulf Möller]
+ * Join the directories crypto/x509 and crypto/x509v3
- *) Complete rewrite of the error code script(s). It is all now handled
- by one script at the top level which handles error code gathering,
- header rewriting and C source file generation. It should be much better
- than the old method: it now uses a modified version of Ulf's parser to
- read the ANSI prototypes in all header files (thus the old K&R definitions
- aren't needed for error creation any more) and do a better job of
- translating function codes into names. The old 'ASN1 error code embedded
- in a comment' is no longer necessary and it doesn't use .err files which
- have now been deleted. Also the error code call doesn't have to appear all
- on one line (which resulted in some large lines...).
- [Steve Henson]
+ *Richard Levitte*
- *) Change #include filenames from <foo.h> to <openssl/foo.h>.
- [Bodo Moeller]
+ * Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
+ This changes the size when using the genpkey app when no size is given. It
+ fixes an omission in earlier changes that changed all RSA, DSA and DH
+ generation apps to use 2048 bits by default.
- *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
- 0 (which usually indicates a closed connection), but continue reading.
- [Bodo Moeller]
+ *Kurt Roeckx*
- *) Fix some race conditions.
- [Bodo Moeller]
+ * Added command 'openssl kdf' that uses the EVP_KDF API.
- *) Add support for CRL distribution points extension. Add Certificate
- Policies and CRL distribution points documentation.
- [Steve Henson]
-
- *) Move the autogenerated header file parts to crypto/opensslconf.h.
- [Ulf Möller]
-
- *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
- 8 of keying material. Merlin has also confirmed interop with this fix
- between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
- [Merlin Hughes <merlin@baltimore.ie>]
-
- *) Fix lots of warnings.
- [Richard Levitte <levitte@stacken.kth.se>]
-
- *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
- the directory spec didn't end with a LIST_SEPARATOR_CHAR.
- [Richard Levitte <levitte@stacken.kth.se>]
-
- *) Fix problems with sizeof(long) == 8.
- [Andy Polyakov <appro@fy.chalmers.se>]
-
- *) Change functions to ANSI C.
- [Ulf Möller]
-
- *) Fix typos in error codes.
- [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
-
- *) Remove defunct assembler files from Configure.
- [Ulf Möller]
+ *Shane Lontis*
- *) SPARC v8 assembler BIGNUM implementation.
- [Andy Polyakov <appro@fy.chalmers.se>]
-
- *) Support for Certificate Policies extension: both print and set.
- Various additions to support the r2i method this uses.
- [Steve Henson]
+ * Added command 'openssl mac' that uses the EVP_MAC API.
- *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
- return a const string when you are expecting an allocated buffer.
- [Ben Laurie]
+ *Shane Lontis*
- *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
- types DirectoryString and DisplayText.
- [Steve Henson]
-
- *) Add code to allow r2i extensions to access the configuration database,
- add an LHASH database driver and add several ctx helper functions.
- [Steve Henson]
+ * Added OPENSSL_info() to get diverse built-in OpenSSL data, such
+ as default directories. Also added the command 'openssl info'
+ for scripting purposes.
- *) Fix an evil bug in bn_expand2() which caused various BN functions to
- fail when they extended the size of a BIGNUM.
- [Steve Henson]
-
- *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
- support typesafe stack.
- [Steve Henson]
+ *Richard Levitte*
- *) Fix typo in SSL_[gs]et_options().
- [Nils Frostberg <nils@medcom.se>]
+ * The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have been
+ deprecated. These undocumented functions were never integrated into the EVP
+ layer and implement the AES Infinite Garble Extension (IGE) mode and AES
+ Bi-directional IGE mode. These modes were never formally standardised and
+ usage of these functions is believed to be very small. In particular
+ AES_bi_ige_encrypt() has a known bug. It accepts 2 AES keys, but only one
+ is ever used. The security implications are believed to be minimal, but
+ this issue was never fixed for backwards compatibility reasons. New code
+ should not use these modes.
- *) Delete various functions and files that belonged to the (now obsolete)
- old X509V3 handling code.
- [Steve Henson]
-
- *) New Configure option "rsaref".
- [Ulf Möller]
+ *Matt Caswell*
- *) Don't auto-generate pem.h.
- [Bodo Moeller]
-
- *) Introduce type-safe ASN.1 SETs.
- [Ben Laurie]
-
- *) Convert various additional casted stacks to type-safe STACK_OF() variants.
- [Ben Laurie, Ralf S. Engelschall, Steve Henson]
+ * Add prediction resistance to the DRBG reseeding process.
- *) Introduce type-safe STACKs. This will almost certainly break lots of code
- that links with OpenSSL (well at least cause lots of warnings), but fear
- not: the conversion is trivial, and it eliminates loads of evil casts. A
- few STACKed things have been converted already. Feel free to convert more.
- In the fullness of time, I'll do away with the STACK type altogether.
- [Ben Laurie]
+ *Paul Dale*
- *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
- specified in <certfile> by updating the entry in the index.txt file.
- This way one no longer has to edit the index.txt file manually for
- revoking a certificate. The -revoke option does the gory details now.
- [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
+ * Limit the number of blocks in a data unit for AES-XTS to 2^20 as
+ mandated by IEEE Std 1619-2018.
- *) Fix `openssl crl -noout -text' combination where `-noout' killed the
- `-text' option at all and this way the `-noout -text' combination was
- inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
- [Ralf S. Engelschall]
+ *Paul Dale*
- *) Make sure a corresponding plain text error message exists for the
- X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
- verify callback function determined that a certificate was revoked.
- [Ralf S. Engelschall]
+ * Added newline escaping functionality to a filename when using openssl dgst.
+ This output format is to replicate the output format found in the '*sum'
+ checksum programs. This aims to preserve backward compatibility.
- *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
- ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
- all available ciphers including rc5, which was forgotten until now.
- In order to let the testing shell script know which algorithms
- are available, a new (up to now undocumented) command
- "openssl list-cipher-commands" is used.
- [Bodo Moeller]
+ *Matt Eaton, Richard Levitte, and Paul Dale*
- *) Bugfix: s_client occasionally would sleep in select() when
- it should have checked SSL_pending() first.
- [Bodo Moeller]
+ * Removed the heartbeat message in DTLS feature, as it has very
+ little usage and doesn't seem to fulfill a valuable purpose.
+ The configuration option is now deprecated.
- *) New functions DSA_do_sign and DSA_do_verify to provide access to
- the raw DSA values prior to ASN.1 encoding.
- [Ulf Möller]
+ *Richard Levitte*
- *) Tweaks to Configure
- [Niels Poppe <niels@netbox.org>]
+ * Changed the output of 'openssl {digestname} < file' to display the
+ digest name in its output.
- *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
- yet...
- [Steve Henson]
-
- *) New variables $(RANLIB) and $(PERL) in the Makefiles.
- [Ulf Möller]
-
- *) New config option to avoid instructions that are illegal on the 80386.
- The default code is faster, but requires at least a 486.
- [Ulf Möller]
-
- *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
- SSL2_SERVER_VERSION (not used at all) macros, which are now the
- same as SSL2_VERSION anyway.
- [Bodo Moeller]
-
- *) New "-showcerts" option for s_client.
- [Bodo Moeller]
-
- *) Still more PKCS#12 integration. Add pkcs12 application to openssl
- application. Various cleanups and fixes.
- [Steve Henson]
-
- *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
- modify error routines to work internally. Add error codes and PBE init
- to library startup routines.
- [Steve Henson]
-
- *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
- packing functions to asn1 and evp. Changed function names and error
- codes along the way.
- [Steve Henson]
-
- *) PKCS12 integration: and so it begins... First of several patches to
- slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
- objects to objects.h
- [Steve Henson]
-
- *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
- and display support for Thawte strong extranet extension.
- [Steve Henson]
-
- *) Add LinuxPPC support.
- [Jeff Dubrule <igor@pobox.org>]
-
- *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
- bn_div_words in alpha.s.
- [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
-
- *) Make sure the RSA OAEP test is skipped under -DRSAref because
- OAEP isn't supported when OpenSSL is built with RSAref.
- [Ulf Moeller <ulf@fitug.de>]
-
- *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
- so they no longer are missing under -DNOPROTO.
- [Soren S. Jorvang <soren@t.dk>]
-
-
- Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
-
- *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
- doesn't work when the session is reused. Coming soon!
- [Ben Laurie]
-
- *) Fix a security hole, that allows sessions to be reused in the wrong
- context thus bypassing client cert protection! All software that uses
- client certs and session caches in multiple contexts NEEDS PATCHING to
- allow session reuse! A fuller solution is in the works.
- [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
-
- *) Some more source tree cleanups (removed obsolete files
- crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
- permission on "config" script to be executable) and a fix for the INSTALL
- document.
- [Ulf Moeller <ulf@fitug.de>]
-
- *) Remove some legacy and erroneous uses of malloc, free instead of
- Malloc, Free.
- [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
-
- *) Make rsa_oaep_test return non-zero on error.
- [Ulf Moeller <ulf@fitug.de>]
-
- *) Add support for native Solaris shared libraries. Configure
- solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
- if someone would make that last step automatic.
- [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
-
- *) ctx_size was not built with the right compiler during "make links". Fixed.
- [Ben Laurie]
-
- *) Change the meaning of 'ALL' in the cipher list. It now means "everything
- except NULL ciphers". This means the default cipher list will no longer
- enable NULL ciphers. They need to be specifically enabled e.g. with
- the string "DEFAULT:eNULL".
- [Steve Henson]
-
- *) Fix to RSA private encryption routines: if p < q then it would
- occasionally produce an invalid result. This will only happen with
- externally generated keys because OpenSSL (and SSLeay) ensure p > q.
- [Steve Henson]
-
- *) Be less restrictive and allow also `perl util/perlpath.pl
- /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
- because this way one can also use an interpreter named `perl5' (which is
- usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
- installed as `perl').
- [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
-
- *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
- [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
-
- *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
- advapi32.lib to Win32 build and change the pem test comparison
- to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
- suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
- and crypto/des/ede_cbcm_enc.c.
- [Steve Henson]
-
- *) DES quad checksum was broken on big-endian architectures. Fixed.
- [Ben Laurie]
-
- *) Comment out two functions in bio.h that aren't implemented. Fix up the
- Win32 test batch file so it (might) work again. The Win32 test batch file
- is horrible: I feel ill....
- [Steve Henson]
-
- *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
- in e_os.h. Audit of header files to check ANSI and non ANSI
- sections: 10 functions were absent from non ANSI section and not exported
- from Windows DLLs. Fixed up libeay.num for new functions.
- [Steve Henson]
-
- *) Make `openssl version' output lines consistent.
- [Ralf S. Engelschall]
-
- *) Fix Win32 symbol export lists for BIO functions: Added
- BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
- to ms/libeay{16,32}.def.
- [Ralf S. Engelschall]
-
- *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
- fine under Unix and passes some trivial tests I've now added. But the
- whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
- added to make sure no one expects that this stuff really works in the
- OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
- up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
- openssl_bio.xs.
- [Ralf S. Engelschall]
-
- *) Fix the generation of two part addresses in perl.
- [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
-
- *) Add config entry for Linux on MIPS.
- [John Tobey <jtobey@channel1.com>]
-
- *) Make links whenever Configure is run, unless we are on Windoze.
- [Ben Laurie]
-
- *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
- Currently only issuerAltName and AuthorityKeyIdentifier make any sense
- in CRLs.
- [Steve Henson]
-
- *) Add a useful kludge to allow package maintainers to specify compiler and
- other platforms details on the command line without having to patch the
- Configure script every time: One now can use ``perl Configure
- <id>:<details>'', i.e. platform ids are allowed to have details appended
- to them (separated by colons). This is treated as there would be a static
- pre-configured entry in Configure's %table under key <id> with value
- <details> and ``perl Configure <id>'' is called. So, when you want to
- perform a quick test-compile under FreeBSD 3.1 with pgcc and without
- assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
- now, which overrides the FreeBSD-elf entry on-the-fly.
- [Ralf S. Engelschall]
-
- *) Disable new TLS1 ciphersuites by default: they aren't official yet.
- [Ben Laurie]
-
- *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
- on the `perl Configure ...' command line. This way one can compile
- OpenSSL libraries with Position Independent Code (PIC) which is needed
- for linking it into DSOs.
- [Ralf S. Engelschall]
-
- *) Remarkably, export ciphers were totally broken and no-one had noticed!
- Fixed.
- [Ben Laurie]
-
- *) Cleaned up the LICENSE document: The official contact for any license
- questions now is the OpenSSL core team under openssl-core@openssl.org.
- And add a paragraph about the dual-license situation to make sure people
- recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
- to the OpenSSL toolkit.
- [Ralf S. Engelschall]
-
- *) General source tree makefile cleanups: Made `making xxx in yyy...'
- display consistent in the source tree and replaced `/bin/rm' by `rm'.
- Additionally cleaned up the `make links' target: Remove unnecessary
- semicolons, subsequent redundant removes, inline point.sh into mklink.sh
- to speed processing and no longer clutter the display with confusing
- stuff. Instead only the actually done links are displayed.
- [Ralf S. Engelschall]
-
- *) Permit null encryption ciphersuites, used for authentication only. It used
- to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
- It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
- encryption.
- [Ben Laurie]
-
- *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
- signed attributes when verifying signatures (this would break them),
- the detached data encoding was wrong and public keys obtained using
- X509_get_pubkey() weren't freed.
- [Steve Henson]
-
- *) Add text documentation for the BUFFER functions. Also added a work around
- to a Win95 console bug. This was triggered by the password read stuff: the
- last character typed gets carried over to the next fread(). If you were
- generating a new cert request using 'req' for example then the last
- character of the passphrase would be CR which would then enter the first
- field as blank.
- [Steve Henson]
-
- *) Added the new `Includes OpenSSL Cryptography Software' button as
- doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
- button and can be used by applications based on OpenSSL to show the
- relationship to the OpenSSL project.
- [Ralf S. Engelschall]
-
- *) Remove confusing variables in function signatures in files
- ssl/ssl_lib.c and ssl/ssl.h.
- [Lennart Bong <lob@kulthea.stacken.kth.se>]
-
- *) Don't install bss_file.c under PREFIX/include/
- [Lennart Bong <lob@kulthea.stacken.kth.se>]
-
- *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
- functions that return function pointers and has support for NT specific
- stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
- #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
- unsigned to signed types: this was killing the Win32 compile.
- [Steve Henson]
-
- *) Add new certificate file to stack functions,
- SSL_add_dir_cert_subjects_to_stack() and
- SSL_add_file_cert_subjects_to_stack(). These largely supplant
- SSL_load_client_CA_file(), and can be used to add multiple certs easily
- to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
- This means that Apache-SSL and similar packages don't have to mess around
- to add as many CAs as they want to the preferred list.
- [Ben Laurie]
-
- *) Experiment with doxygen documentation. Currently only partially applied to
- ssl/ssl_lib.c.
- See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
- openssl.doxy as the configuration file.
- [Ben Laurie]
-
- *) Get rid of remaining C++-style comments which strict C compilers hate.
- [Ralf S. Engelschall, pointed out by Carlos Amengual]
-
- *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
- compiled in by default: it has problems with large keys.
- [Steve Henson]
-
- *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
- DH private keys and/or callback functions which directly correspond to
- their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
- is needed for applications which have to configure certificates on a
- per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
- (e.g. s_server).
- For the RSA certificate situation is makes no difference, but
- for the DSA certificate situation this fixes the "no shared cipher"
- problem where the OpenSSL cipher selection procedure failed because the
- temporary keys were not overtaken from the context and the API provided
- no way to reconfigure them.
- The new functions now let applications reconfigure the stuff and they
- are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
- SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
- non-public-API function ssl_cert_instantiate() is used as a helper
- function and also to reduce code redundancy inside ssl_rsa.c.
- [Ralf S. Engelschall]
-
- *) Move s_server -dcert and -dkey options out of the undocumented feature
- area because they are useful for the DSA situation and should be
- recognized by the users.
- [Ralf S. Engelschall]
-
- *) Fix the cipher decision scheme for export ciphers: the export bits are
- *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
- SSL_EXP_MASK. So, the original variable has to be used instead of the
- already masked variable.
- [Richard Levitte <levitte@stacken.kth.se>]
-
- *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
- [Richard Levitte <levitte@stacken.kth.se>]
-
- *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
- from `int' to `unsigned int' because it's a length and initialized by
- EVP_DigestFinal() which expects an `unsigned int *'.
- [Richard Levitte <levitte@stacken.kth.se>]
-
- *) Don't hard-code path to Perl interpreter on shebang line of Configure
- script. Instead use the usual Shell->Perl transition trick.
- [Ralf S. Engelschall]
-
- *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
- (in addition to RSA certificates) to match the behaviour of `openssl dsa
- -noout -modulus' as it's already the case for `openssl rsa -noout
- -modulus'. For RSA the -modulus is the real "modulus" while for DSA
- currently the public key is printed (a decision which was already done by
- `openssl dsa -modulus' in the past) which serves a similar purpose.
- Additionally the NO_RSA no longer completely removes the whole -modulus
- option; it now only avoids using the RSA stuff. Same applies to NO_DSA
- now, too.
- [Ralf S. Engelschall]
-
- *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
- BIO. See the source (crypto/evp/bio_ok.c) for more info.
- [Arne Ansper <arne@ats.cyber.ee>]
-
- *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
- to be added. Now both 'req' and 'ca' can use new objects defined in the
- config file.
- [Steve Henson]
-
- *) Add cool BIO that does syslog (or event log on NT).
- [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
-
- *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
- TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
- TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
- Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
- [Ben Laurie]
-
- *) Add preliminary config info for new extension code.
- [Steve Henson]
-
- *) Make RSA_NO_PADDING really use no padding.
- [Ulf Moeller <ulf@fitug.de>]
-
- *) Generate errors when private/public key check is done.
- [Ben Laurie]
-
- *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
- for some CRL extensions and new objects added.
- [Steve Henson]
-
- *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
- key usage extension and fuller support for authority key id.
- [Steve Henson]
-
- *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
- padding method for RSA, which is recommended for new applications in PKCS
- #1 v2.0 (RFC 2437, October 1998).
- OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
- foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
- against Bleichbacher's attack on RSA.
- [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
- Ben Laurie]
-
- *) Updates to the new SSL compression code
- [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
-
- *) Fix so that the version number in the master secret, when passed
- via RSA, checks that if TLS was proposed, but we roll back to SSLv3
- (because the server will not accept higher), that the version number
- is 0x03,0x01, not 0x03,0x00
- [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
-
- *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
- leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
- in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
- [Steve Henson]
-
- *) Support for RAW extensions where an arbitrary extension can be
- created by including its DER encoding. See apps/openssl.cnf for
- an example.
- [Steve Henson]
-
- *) Make sure latest Perl versions don't interpret some generated C array
- code as Perl array code in the crypto/err/err_genc.pl script.
- [Lars Weber <3weber@informatik.uni-hamburg.de>]
-
- *) Modify ms/do_ms.bat to not generate assembly language makefiles since
- not many people have the assembler. Various Win32 compilation fixes and
- update to the INSTALL.W32 file with (hopefully) more accurate Win32
- build instructions.
- [Steve Henson]
-
- *) Modify configure script 'Configure' to automatically create crypto/date.h
- file under Win32 and also build pem.h from pem.org. New script
- util/mkfiles.pl to create the MINFO file on environments that can't do a
- 'make files': perl util/mkfiles.pl >MINFO should work.
- [Steve Henson]
-
- *) Major rework of DES function declarations, in the pursuit of correctness
- and purity. As a result, many evil casts evaporated, and some weirdness,
- too. You may find this causes warnings in your code. Zapping your evil
- casts will probably fix them. Mostly.
- [Ben Laurie]
-
- *) Fix for a typo in asn1.h. Bug fix to object creation script
- obj_dat.pl. It considered a zero in an object definition to mean
- "end of object": none of the objects in objects.h have any zeros
- so it wasn't spotted.
- [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
-
- *) Add support for Triple DES Cipher Block Chaining with Output Feedback
- Masking (CBCM). In the absence of test vectors, the best I have been able
- to do is check that the decrypt undoes the encrypt, so far. Send me test
- vectors if you have them.
- [Ben Laurie]
-
- *) Correct calculation of key length for export ciphers (too much space was
- allocated for null ciphers). This has not been tested!
- [Ben Laurie]
-
- *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
- message is now correct (it understands "crypto" and "ssl" on its
- command line). There is also now an "update" option. This will update
- the util/ssleay.num and util/libeay.num files with any new functions.
- If you do a:
- perl util/mkdef.pl crypto ssl update
- it will update them.
- [Steve Henson]
-
- *) Overhauled the Perl interface (perl/*):
- - ported BN stuff to OpenSSL's different BN library
- - made the perl/ source tree CVS-aware
- - renamed the package from SSLeay to OpenSSL (the files still contain
- their history because I've copied them in the repository)
- - removed obsolete files (the test scripts will be replaced
- by better Test::Harness variants in the future)
- [Ralf S. Engelschall]
-
- *) First cut for a very conservative source tree cleanup:
- 1. merge various obsolete readme texts into doc/ssleay.txt
- where we collect the old documents and readme texts.
- 2. remove the first part of files where I'm already sure that we no
- longer need them because of three reasons: either they are just temporary
- files which were left by Eric or they are preserved original files where
- I've verified that the diff is also available in the CVS via "cvs diff
- -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
- the crypto/md/ stuff).
- [Ralf S. Engelschall]
-
- *) More extension code. Incomplete support for subject and issuer alt
- name, issuer and authority key id. Change the i2v function parameters
- and add an extra 'crl' parameter in the X509V3_CTX structure: guess
- what that's for :-) Fix to ASN1 macro which messed up
- IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
- [Steve Henson]
-
- *) Preliminary support for ENUMERATED type. This is largely copied from the
- INTEGER code.
- [Steve Henson]
-
- *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
- [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
-
- *) Make sure `make rehash' target really finds the `openssl' program.
- [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
-
- *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
- like to hear about it if this slows down other processors.
- [Ben Laurie]
-
- *) Add CygWin32 platform information to Configure script.
- [Alan Batie <batie@aahz.jf.intel.com>]
-
- *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
- [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
-
- *) New program nseq to manipulate netscape certificate sequences
- [Steve Henson]
-
- *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
- few typos.
- [Steve Henson]
-
- *) Fixes to BN code. Previously the default was to define BN_RECURSION
- but the BN code had some problems that would cause failures when
- doing certificate verification and some other functions.
- [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
-
- *) Add ASN1 and PEM code to support netscape certificate sequences.
- [Steve Henson]
-
- *) Add ASN1 and PEM code to support netscape certificate sequences.
- [Steve Henson]
-
- *) Add several PKIX and private extended key usage OIDs.
- [Steve Henson]
-
- *) Modify the 'ca' program to handle the new extension code. Modify
- openssl.cnf for new extension format, add comments.
- [Steve Henson]
-
- *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
- and add a sample to openssl.cnf so req -x509 now adds appropriate
- CA extensions.
- [Steve Henson]
-
- *) Continued X509 V3 changes. Add to other makefiles, integrate with the
- error code, add initial support to X509_print() and x509 application.
- [Steve Henson]
-
- *) Takes a deep breath and start adding X509 V3 extension support code. Add
- files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
- stuff is currently isolated and isn't even compiled yet.
- [Steve Henson]
-
- *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
- ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
- Removed the versions check from X509 routines when loading extensions:
- this allows certain broken certificates that don't set the version
- properly to be processed.
- [Steve Henson]
-
- *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
- Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
- can still be regenerated with "make depend".
- [Ben Laurie]
-
- *) Spelling mistake in C version of CAST-128.
- [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
-
- *) Changes to the error generation code. The perl script err-code.pl
- now reads in the old error codes and retains the old numbers, only
- adding new ones if necessary. It also only changes the .err files if new
- codes are added. The makefiles have been modified to only insert errors
- when needed (to avoid needlessly modifying header files). This is done
- by only inserting errors if the .err file is newer than the auto generated
- C file. To rebuild all the error codes from scratch (the old behaviour)
- either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
- or delete all the .err files.
- [Steve Henson]
-
- *) CAST-128 was incorrectly implemented for short keys. The C version has
- been fixed, but is untested. The assembler versions are also fixed, but
- new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
- to regenerate it if needed.
- [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
- Hagino <itojun@kame.net>]
-
- *) File was opened incorrectly in randfile.c.
- [Ulf Möller <ulf@fitug.de>]
-
- *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
- functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
- GeneralizedTime. ASN1_TIME is the proper type used in certificates et
- al: it's just almost always a UTCTime. Note this patch adds new error
- codes so do a "make errors" if there are problems.
- [Steve Henson]
-
- *) Correct Linux 1 recognition in config.
- [Ulf Möller <ulf@fitug.de>]
-
- *) Remove pointless MD5 hash when using DSA keys in ca.
- [Anonymous <nobody@replay.com>]
-
- *) Generate an error if given an empty string as a cert directory. Also
- generate an error if handed NULL (previously returned 0 to indicate an
- error, but didn't set one).
- [Ben Laurie, reported by Anonymous <nobody@replay.com>]
-
- *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
- [Ben Laurie]
-
- *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
- parameters. This was causing a warning which killed off the Win32 compile.
- [Steve Henson]
+ *Richard Levitte*
- *) Remove C++ style comments from crypto/bn/bn_local.h.
- [Neil Costigan <neil.costigan@celocom.com>]
-
- *) The function OBJ_txt2nid was broken. It was supposed to return a nid
- based on a text string, looking up short and long names and finally
- "dot" format. The "dot" format stuff didn't work. Added new function
- OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
- OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
- OID is not part of the table.
- [Steve Henson]
-
- *) Add prototypes to X509 lookup/verify methods, fixing a bug in
- X509_LOOKUP_by_alias().
- [Ben Laurie]
-
- *) Sort openssl functions by name.
- [Ben Laurie]
-
- *) Get the gendsa program working (hopefully) and add it to app list. Remove
- encryption from sample DSA keys (in case anyone is interested the password
- was "1234").
- [Steve Henson]
-
- *) Make _all_ *_free functions accept a NULL pointer.
- [Frans Heymans <fheymans@isaserver.be>]
-
- *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
- NULL pointers.
- [Anonymous <nobody@replay.com>]
-
- *) s_server should send the CAfile as acceptable CAs, not its own cert.
- [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
-
- *) Don't blow it for numeric -newkey arguments to apps/req.
- [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
-
- *) Temp key "for export" tests were wrong in s3_srvr.c.
- [Anonymous <nobody@replay.com>]
-
- *) Add prototype for temp key callback functions
- SSL_CTX_set_tmp_{rsa,dh}_callback().
- [Ben Laurie]
-
- *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
- DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
- [Steve Henson]
-
- *) X509_name_add_entry() freed the wrong thing after an error.
- [Arne Ansper <arne@ats.cyber.ee>]
-
- *) rsa_eay.c would attempt to free a NULL context.
- [Arne Ansper <arne@ats.cyber.ee>]
+ * Added a new generic trace API which provides support for enabling
+ instrumentation through trace output. This feature is mainly intended
+ as an aid for developers and is disabled by default. To utilize it,
+ OpenSSL needs to be configured with the `enable-trace` option.
- *) BIO_s_socket() had a broken should_retry() on Windoze.
- [Arne Ansper <arne@ats.cyber.ee>]
-
- *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
- [Arne Ansper <arne@ats.cyber.ee>]
+ If the tracing API is enabled, the application can activate trace output
+ by registering BIOs as trace channels for a number of tracing and debugging
+ categories.
- *) Make sure the already existing X509_STORE->depth variable is initialized
- in X509_STORE_new(), but document the fact that this variable is still
- unused in the certificate verification process.
- [Ralf S. Engelschall]
+ The 'openssl' application has been expanded to enable any of the types
+ available via environment variables defined by the user, and serves as
+ one possible example on how to use this functionality.
- *) Fix the various library and apps files to free up pkeys obtained from
- X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
- [Steve Henson]
+ *Richard Levitte & Matthias St. Pierre*
- *) Fix reference counting in X509_PUBKEY_get(). This makes
- demos/maurice/example2.c work, amongst others, probably.
- [Steve Henson and Ben Laurie]
+ * Added build tests for C++. These are generated files that only do one
+ thing, to include one public OpenSSL head file each. This tests that
+ the public header files can be usefully included in a C++ application.
- *) First cut of a cleanup for apps/. First the `ssleay' program is now named
- `openssl' and second, the shortcut symlinks for the `openssl <command>'
- are no longer created. This way we have a single and consistent command
- line interface `openssl <command>', similar to `cvs <command>'.
- [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
+ This test isn't enabled by default. It can be enabled with the option
+ 'enable-buildtest-c++'.
- *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
- BIT STRING wrapper always have zero unused bits.
- [Steve Henson]
+ *Richard Levitte*
- *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
- [Steve Henson]
+ * Add Single Step KDF (EVP_KDF_SS) to EVP_KDF.
- *) Make the top-level INSTALL documentation easier to understand.
- [Paul Sutton]
+ *Shane Lontis*
- *) Makefiles updated to exit if an error occurs in a sub-directory
- make (including if user presses ^C) [Paul Sutton]
+ * Add KMAC to EVP_MAC.
- *) Make Montgomery context stuff explicit in RSA data structure.
- [Ben Laurie]
+ *Shane Lontis*
- *) Fix build order of pem and err to allow for generated pem.h.
- [Ben Laurie]
+ * Added property based algorithm implementation selection framework to
+ the core.
- *) Fix renumbering bug in X509_NAME_delete_entry().
- [Ben Laurie]
+ *Paul Dale*
- *) Enhanced the err-ins.pl script so it makes the error library number
- global and can add a library name. This is needed for external ASN1 and
- other error libraries.
- [Steve Henson]
+ * Added SCA hardening for modular field inversion in EC_GROUP through
+ a new dedicated field_inv() pointer in EC_METHOD.
+ This also addresses a leakage affecting conversions from projective
+ to affine coordinates.
- *) Fixed sk_insert which never worked properly.
- [Steve Henson]
+ *Billy Bob Brumley, Nicola Tuveri*
- *) Fix ASN1 macros so they can handle indefinite length constructed
- EXPLICIT tags. Some non standard certificates use these: they can now
- be read in.
- [Steve Henson]
+ * Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
+ implementations. This includes an EVP_PKEY to EVP_KDF bridge for
+ those algorithms that were already supported through the EVP_PKEY API
+ (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
+ and scrypt are now wrappers that call EVP_KDF.
- *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
- into a single doc/ssleay.txt bundle. This way the information is still
- preserved but no longer messes up this directory. Now it's new room for
- the new set of documentation files.
- [Ralf S. Engelschall]
+ *David Makepeace*
- *) SETs were incorrectly DER encoded. This was a major pain, because they
- shared code with SEQUENCEs, which aren't coded the same. This means that
- almost everything to do with SETs or SEQUENCEs has either changed name or
- number of arguments.
- [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
+ * Build devcrypto engine as a dynamic engine.
- *) Fix test data to work with the above.
- [Ben Laurie]
+ *Eneas U de Queiroz*
- *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
- was already fixed by Eric for 0.9.1 it seems.
- [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
+ * Add keyed BLAKE2 to EVP_MAC.
- *) Autodetect FreeBSD3.
- [Ben Laurie]
+ *Antoine Salon*
- *) Fix various bugs in Configure. This affects the following platforms:
- nextstep
- ncr-scde
- unixware-2.0
- unixware-2.0-pentium
- sco5-cc.
- [Ben Laurie]
+ * Fix a bug in the computation of the endpoint-pair shared secret used
+ by DTLS over SCTP. This breaks interoperability with older versions
+ of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
+ switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
+ interoperability with such broken implementations. However, enabling
+ this switch breaks interoperability with correct implementations.
- *) Eliminate generated files from CVS. Reorder tests to regenerate files
- before they are needed.
- [Ben Laurie]
+ * Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
+ re-used X509_PUBKEY object if the second PUBKEY is malformed.
- *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
- [Ben Laurie]
+ *Bernd Edlinger*
+ * Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
- Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
+ *Richard Levitte*
- *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
- changed SSLeay to OpenSSL in version strings.
- [Ralf S. Engelschall]
+ * Change the license to the Apache License v2.0.
- *) Some fixups to the top-level documents.
- [Paul Sutton]
+ *Richard Levitte*
- *) Fixed the nasty bug where rsaref.h was not found under compile-time
- because the symlink to include/ was missing.
- [Ralf S. Engelschall]
+ * Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
- *) Incorporated the popular no-RSA/DSA-only patches
- which allow to compile a RSA-free SSLeay.
- [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
+ - Major releases (indicated by incrementing the MAJOR release number)
+ may introduce incompatible API/ABI changes.
+ - Minor releases (indicated by incrementing the MINOR release number)
+ may introduce new features but retain API/ABI compatibility.
+ - Patch releases (indicated by incrementing the PATCH number)
+ are intended for bug fixes and other improvements of existing
+ features only (like improving performance or adding documentation)
+ and retain API/ABI compatibility.
- *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
- when "ssleay" is still not found.
- [Ralf S. Engelschall]
+ *Richard Levitte*
- *) Added more platforms to Configure: Cray T3E, HPUX 11,
- [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
+ * Add support for RFC5297 SIV mode (siv128), including AES-SIV.
- *) Updated the README file.
- [Ralf S. Engelschall]
+ *Todd Short*
- *) Added various .cvsignore files in the CVS repository subdirs
- to make a "cvs update" really silent.
- [Ralf S. Engelschall]
+ * Remove the 'dist' target and add a tarball building script. The
+ 'dist' target has fallen out of use, and it shouldn't be
+ necessary to configure just to create a source distribution.
- *) Recompiled the error-definition header files and added
- missing symbols to the Win32 linker tables.
- [Ralf S. Engelschall]
+ *Richard Levitte*
- *) Cleaned up the top-level documents;
- o new files: CHANGES and LICENSE
- o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
- o merged COPYRIGHT into LICENSE
- o removed obsolete TODO file
- o renamed MICROSOFT to INSTALL.W32
- [Ralf S. Engelschall]
+ * Recreate the OS390-Unix config target. It no longer relies on a
+ special script like it did for OpenSSL pre-1.1.0.
- *) Removed dummy files from the 0.9.1b source tree:
- crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
- crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
- crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
- crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
- util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
- [Ralf S. Engelschall]
+ *Richard Levitte*
- *) Added various platform portability fixes.
- [Mark J. Cox]
+ * Instead of having the source directories listed in Configure, add
+ a 'build.info' keyword SUBDIRS to indicate what sub-directories to
+ look into.
- *) The Genesis of the OpenSSL rpject:
- We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
- Young and Tim J. Hudson created while they were working for C2Net until
- summer 1998.
- [The OpenSSL Project]
+ *Richard Levitte*
+ * Add GMAC to EVP_MAC.
- Changes between 0.9.0b and 0.9.1b [not released]
+ *Paul Dale*
- *) Updated a few CA certificates under certs/
- [Eric A. Young]
+ * Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
- *) Changed some BIGNUM api stuff.
- [Eric A. Young]
+ *Richard Levitte*
- *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
- DGUX x86, Linux Alpha, etc.
- [Eric A. Young]
+ * Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
+ implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
+ to facilitate the continued use of MACs through raw private keys in
+ functionality such as EVP_DigestSign* and EVP_DigestVerify*.
- *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
- RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
- available).
- [Eric A. Young]
+ *Richard Levitte*
- *) Add -strparse option to asn1pars program which parses nested
- binary structures
- [Dr Stephen Henson <shenson@bigfoot.com>]
+ * Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
+ should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
- *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
- [Eric A. Young]
+ *Antoine Salon*
- *) DSA fix for "ca" program.
- [Eric A. Young]
+ * Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
+ the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
+ are retained for backwards compatibility.
- *) Added "-genkey" option to "dsaparam" program.
- [Eric A. Young]
+ *Antoine Salon*
- *) Added RIPE MD160 (rmd160) message digest.
- [Eric A. Young]
+ * AES-XTS mode now enforces that its two keys are different to mitigate
+ the attacked described in "Efficient Instantiations of Tweakable
+ Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
+ Details of this attack can be obtained from:
+ http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf
- *) Added -a (all) option to "ssleay version" command.
- [Eric A. Young]
+ *Paul Dale*
- *) Added PLATFORM define which is the id given to Configure.
- [Eric A. Young]
+ * Rename the object files, i.e. give them other names than in previous
+ versions. Their names now include the name of the final product, as
+ well as its type mnemonic (bin, lib, shlib).
- *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
- [Eric A. Young]
+ *Richard Levitte*
- *) Extended the ASN.1 parser routines.
- [Eric A. Young]
+ * Added new option for 'openssl list', '-objects', which will display the
+ list of built in objects, i.e. OIDs with names.
- *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
- [Eric A. Young]
+ *Richard Levitte*
- *) Added a BN_CTX to the BN library.
- [Eric A. Young]
+ * Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
+ improves application performance by removing data copies and providing
+ applications with zero-copy system calls such as sendfile and splice.
- *) Fixed the weak key values in DES library
- [Eric A. Young]
+ *Boris Pismenny*
- *) Changed API in EVP library for cipher aliases.
- [Eric A. Young]
+### Changes between 1.1.1a and 1.1.1b [xx XXX xxxx] ###
- *) Added support for RC2/64bit cipher.
- [Eric A. Young]
+ * Change the info callback signals for the start and end of a post-handshake
+ message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
+ and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
+ confused by this and assume that a TLSv1.2 renegotiation has started. This
+ can break KeyUpdate handling. Instead we no longer signal the start and end
+ of a post handshake message exchange (although the messages themselves are
+ still signalled). This could break some applications that were expecting
+ the old signals. However without this KeyUpdate is not usable for many
+ applications.
- *) Converted the lhash library to the crypto/mem.c functions.
- [Eric A. Young]
+ *Matt Caswell*
- *) Added more recognized ASN.1 object ids.
- [Eric A. Young]
+### Changes between 1.1.1 and 1.1.1a [20 Nov 2018] ###
- *) Added more RSA padding checks for SSL/TLS.
- [Eric A. Young]
+ * Timing vulnerability in DSA signature generation
- *) Added BIO proxy/filter functionality.
- [Eric A. Young]
+ The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
+ timing side channel attack. An attacker could use variations in the signing
+ algorithm to recover the private key.
- *) Added extra_certs to SSL_CTX which can be used
- send extra CA certificates to the client in the CA cert chain sending
- process. It can be configured with SSL_CTX_add_extra_chain_cert().
- [Eric A. Young]
+ This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
+ (CVE-2018-0734)
- *) Now Fortezza is denied in the authentication phase because
- this is key exchange mechanism is not supported by SSLeay at all.
- [Eric A. Young]
+ *Paul Dale*
- *) Additional PKCS1 checks.
- [Eric A. Young]
+ * Timing vulnerability in ECDSA signature generation
- *) Support the string "TLSv1" for all TLS v1 ciphers.
- [Eric A. Young]
+ The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
+ timing side channel attack. An attacker could use variations in the signing
+ algorithm to recover the private key.
- *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
- ex_data index of the SSL context in the X509_STORE_CTX ex_data.
- [Eric A. Young]
+ This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
+ (CVE-2018-0735)
- *) Fixed a few memory leaks.
- [Eric A. Young]
+ *Paul Dale*
- *) Fixed various code and comment typos.
- [Eric A. Young]
+ * Fixed the issue that RAND_add()/RAND_seed() silently discards random input
+ if its length exceeds 4096 bytes. The limit has been raised to a buffer size
+ of two gigabytes and the error handling improved.
- *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
- bytes sent in the client random.
- [Edward Bishop <ebishop@spyglass.com>]
+ This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
+ categorized as a normal bug, not a security issue, because the DRBG reseeds
+ automatically and is fully functional even without additional randomness
+ provided by the application.
+
+### Changes between 1.1.0i and 1.1.1 [11 Sep 2018] ###
+
+ * Add a new ClientHello callback. Provides a callback interface that gives
+ the application the ability to adjust the nascent SSL object at the
+ earliest stage of ClientHello processing, immediately after extensions have
+ been collected but before they have been processed. In particular, this
+ callback can adjust the supported TLS versions in response to the contents
+ of the ClientHello
+
+ *Benjamin Kaduk*
+
+ * Add SM2 base algorithm support.
+
+ *Jack Lloyd*
+
+ * s390x assembly pack: add (improved) hardware-support for the following
+ cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
+ aes-cfb/cfb8, aes-ecb.
+
+ *Patrick Steuer*
+
+ * Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
+ parameter is no longer accepted, as it leads to a corrupt table. NULL
+ pem_str is reserved for alias entries only.
+
+ *Richard Levitte*
+
+ * Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
+ step for prime curves. The new implementation is based on formulae from
+ differential addition-and-doubling in homogeneous projective coordinates
+ from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
+ against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
+ and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
+ to work in projective coordinates.
+
+ *Billy Bob Brumley, Nicola Tuveri*
+
+ * Change generating and checking of primes so that the error rate of not
+ being prime depends on the intended use based on the size of the input.
+ For larger primes this will result in more rounds of Miller-Rabin.
+ The maximal error rate for primes with more than 1080 bits is lowered
+ to 2^-128.
+
+ *Kurt Roeckx, Annie Yousar*
+
+ * Increase the number of Miller-Rabin rounds for DSA key generating to 64.
+
+ *Kurt Roeckx*
+
+ * The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
+ moving between systems, and to avoid confusion when a Windows build is
+ done with mingw vs with MSVC. For POSIX installs, there's still a
+ symlink or copy named 'tsget' to avoid that confusion as well.
+
+ *Richard Levitte*
+
+ * Revert blinding in ECDSA sign and instead make problematic addition
+ length-invariant. Switch even to fixed-length Montgomery multiplication.
+
+ *Andy Polyakov*
+
+ * Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
+ step for binary curves. The new implementation is based on formulae from
+ differential addition-and-doubling in mixed Lopez-Dahab projective
+ coordinates, modified to independently blind the operands.
+
+ *Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri*
+
+ * Add a scaffold to optionally enhance the Montgomery ladder implementation
+ for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
+ EC_METHODs to implement their own specialized "ladder step", to take
+ advantage of more favorable coordinate systems or more efficient
+ differential addition-and-doubling algorithms.
+
+ *Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri*
+
+ * Modified the random device based seed sources to keep the relevant
+ file descriptors open rather than reopening them on each access.
+ This allows such sources to operate in a chroot() jail without
+ the associated device nodes being available. This behaviour can be
+ controlled using RAND_keep_random_devices_open().
+
+ *Paul Dale*
+
+ * Numerous side-channel attack mitigations have been applied. This may have
+ performance impacts for some algorithms for the benefit of improved
+ security. Specific changes are noted in this change log by their respective
+ authors.
+
+ *Matt Caswell*
+
+ * AIX shared library support overhaul. Switch to AIX "natural" way of
+ handling shared libraries, which means collecting shared objects of
+ different versions and bitnesses in one common archive. This allows to
+ mitigate conflict between 1.0 and 1.1 side-by-side installations. It
+ doesn't affect the way 3rd party applications are linked, only how
+ multi-version installation is managed.
+
+ *Andy Polyakov*
+
+ * Make ec_group_do_inverse_ord() more robust and available to other
+ EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
+ mitigations are applied to the fallback BN_mod_inverse().
+ When using this function rather than BN_mod_inverse() directly, new
+ EC cryptosystem implementations are then safer-by-default.
+
+ *Billy Bob Brumley*
+
+ * Add coordinate blinding for EC_POINT and implement projective
+ coordinate blinding for generic prime curves as a countermeasure to
+ chosen point SCA attacks.
+
+ *Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley*
+
+ * Add blinding to ECDSA and DSA signatures to protect against side channel
+ attacks discovered by Keegan Ryan (NCC Group).
+
+ *Matt Caswell*
+
+ * Enforce checking in the pkeyutl command line app to ensure that the input
+ length does not exceed the maximum supported digest length when performing
+ a sign, verify or verifyrecover operation.
+
+ *Matt Caswell*
+
+ * SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
+ I/O in combination with something like select() or poll() will hang. This
+ can be turned off again using SSL_CTX_clear_mode().
+ Many applications do not properly handle non-application data records, and
+ TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
+ around the problems in those applications, but can also break some.
+ It's recommended to read the manpages about SSL_read(), SSL_write(),
+ SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
+ SSL_CTX_set_read_ahead() again.
+
+ *Kurt Roeckx*
+
+ * When unlocking a pass phrase protected PEM file or PKCS#8 container, we
+ now allow empty (zero character) pass phrases.
+
+ *Richard Levitte*
+
+ * Apply blinding to binary field modular inversion and remove patent
+ pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
+
+ *Billy Bob Brumley*
+
+ * Deprecate ec2_mult.c and unify scalar multiplication code paths for
+ binary and prime elliptic curves.
+
+ *Billy Bob Brumley*
+
+ * Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
+ constant time fixed point multiplication.
+
+ *Billy Bob Brumley*
+
+ * Revise elliptic curve scalar multiplication with timing attack
+ defenses: ec_wNAF_mul redirects to a constant time implementation
+ when computing fixed point and variable point multiplication (which
+ in OpenSSL are mostly used with secret scalars in keygen, sign,
+ ECDH derive operations).
+ *Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García,
+ Sohaib ul Hassan*
+
+ * Updated CONTRIBUTING
+
+ *Rich Salz*
+
+ * Updated DRBG / RAND to request nonce and additional low entropy
+ randomness from the system.
+
+ *Matthias St. Pierre*
+
+ * Updated 'openssl rehash' to use OpenSSL consistent default.
+
+ *Richard Levitte*
+
+ * Moved the load of the ssl_conf module to libcrypto, which helps
+ loading engines that libssl uses before libssl is initialised.
+
+ *Matt Caswell*
+
+ * Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
+
+ *Matt Caswell*
+
+ * Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
+
+ *Ingo Schwarze, Rich Salz*
+
+ * Added output of accepting IP address and port for 'openssl s_server'
+
+ *Richard Levitte*
+
+ * Added a new API for TLSv1.3 ciphersuites:
+ SSL_CTX_set_ciphersuites()
+ SSL_set_ciphersuites()
+
+ *Matt Caswell*
+
+ * Memory allocation failures consistently add an error to the error
+ stack.
+
+ *Rich Salz*
+
+ * Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
+ in libcrypto when run as setuid/setgid.
+
+ *Bernd Edlinger*
+
+ * Load any config file by default when libssl is used.
+
+ *Matt Caswell*
+
+ * Added new public header file <openssl/rand_drbg.h> and documentation
+ for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
+
+ *Matthias St. Pierre*
+
+ * QNX support removed (cannot find contributors to get their approval
+ for the license change).
+
+ *Rich Salz*
+
+ * TLSv1.3 replay protection for early data has been implemented. See the
+ SSL_read_early_data() man page for further details.
+
+ *Matt Caswell*
+
+ * Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
+ configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
+ below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
+ In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
+ would otherwise inadvertently disable all TLSv1.3 ciphersuites the
+ configuration has been separated out. See the ciphers man page or the
+ SSL_CTX_set_ciphersuites() man page for more information.
+
+ *Matt Caswell*
+
+ * On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
+ in responder mode now supports the new "-multi" option, which
+ spawns the specified number of child processes to handle OCSP
+ requests. The "-timeout" option now also limits the OCSP
+ responder's patience to wait to receive the full client request
+ on a newly accepted connection. Child processes are respawned
+ as needed, and the CA index file is automatically reloaded
+ when changed. This makes it possible to run the "ocsp" responder
+ as a long-running service, making the OpenSSL CA somewhat more
+ feature-complete. In this mode, most diagnostic messages logged
+ after entering the event loop are logged via syslog(3) rather than
+ written to stderr.
+
+ *Viktor Dukhovni*
+
+ * Added support for X448 and Ed448. Heavily based on original work by
+ Mike Hamburg.
+
+ *Matt Caswell*
+
+ * Extend OSSL_STORE with capabilities to search and to narrow the set of
+ objects loaded. This adds the functions OSSL_STORE_expect() and
+ OSSL_STORE_find() as well as needed tools to construct searches and
+ get the search data out of them.
+
+ *Richard Levitte*
+
+ * Support for TLSv1.3 added. Note that users upgrading from an earlier
+ version of OpenSSL should review their configuration settings to ensure
+ that they are still appropriate for TLSv1.3. For further information see:
+ https://wiki.openssl.org/index.php/TLS1.3
+
+ *Matt Caswell*
+
+ * Grand redesign of the OpenSSL random generator
+
+ The default RAND method now utilizes an AES-CTR DRBG according to
+ NIST standard SP 800-90Ar1. The new random generator is essentially
+ a port of the default random generator from the OpenSSL FIPS 2.0
+ object module. It is a hybrid deterministic random bit generator
+ using an AES-CTR bit stream and which seeds and reseeds itself
+ automatically using trusted system entropy sources.
+
+ Some of its new features are:
+ - Support for multiple DRBG instances with seed chaining.
+ - The default RAND method makes use of a DRBG.
+ - There is a public and private DRBG instance.
+ - The DRBG instances are fork-safe.
+ - Keep all global DRBG instances on the secure heap if it is enabled.
+ - The public and private DRBG instance are per thread for lock free
+ operation
+
+ *Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre*
+
+ * Changed Configure so it only says what it does and doesn't dump
+ so much data. Instead, ./configdata.pm should be used as a script
+ to display all sorts of configuration data.
+
+ *Richard Levitte*
+
+ * Added processing of "make variables" to Configure.
+
+ *Richard Levitte*
+
+ * Added SHA512/224 and SHA512/256 algorithm support.
+
+ *Paul Dale*
+
+ * The last traces of Netware support, first removed in 1.1.0, have
+ now been removed.
+
+ *Rich Salz*
+
+ * Get rid of Makefile.shared, and in the process, make the processing
+ of certain files (rc.obj, or the .def/.map/.opt files produced from
+ the ordinal files) more visible and hopefully easier to trace and
+ debug (or make silent).
+
+ *Richard Levitte*
+
+ * Make it possible to have environment variable assignments as
+ arguments to config / Configure.
+
+ *Richard Levitte*
+
+ * Add multi-prime RSA (RFC 8017) support.
+
+ *Paul Yang*
+
+ * Add SM3 implemented according to GB/T 32905-2016
+ * Jack Lloyd <jack.lloyd@ribose.com>,
+ Ronald Tse <ronald.tse@ribose.com>,
+ Erick Borsboom <erick.borsboom@ribose.com> *
+
+ * Add 'Maximum Fragment Length' TLS extension negotiation and support
+ as documented in RFC6066.
+ Based on a patch from Tomasz Moń
+
+ *Filipe Raimundo da Silva*
+
+ * Add SM4 implemented according to GB/T 32907-2016.
+ * Jack Lloyd <jack.lloyd@ribose.com>,
+ Ronald Tse <ronald.tse@ribose.com>,
+ Erick Borsboom <erick.borsboom@ribose.com> *
+
+ * Reimplement -newreq-nodes and ERR_error_string_n; the
+ original author does not agree with the license change.
+
+ *Rich Salz*
+
+ * Add ARIA AEAD TLS support.
+
+ *Jon Spillett*
+
+ * Some macro definitions to support VS6 have been removed. Visual
+ Studio 6 has not worked since 1.1.0
+
+ *Rich Salz*
+
+ * Add ERR_clear_last_mark(), to allow callers to clear the last mark
+ without clearing the errors.
+
+ *Richard Levitte*
+
+ * Add "atfork" functions. If building on a system that without
+ pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
+ requirements. The RAND facility now uses/requires this.
+
+ *Rich Salz*
+
+ * Add SHA3.
+
+ *Andy Polyakov*
+
+ * The UI API becomes a permanent and integral part of libcrypto, i.e.
+ not possible to disable entirely. However, it's still possible to
+ disable the console reading UI method, UI_OpenSSL() (use UI_null()
+ as a fallback).
+
+ To disable, configure with 'no-ui-console'. 'no-ui' is still
+ possible to use as an alias. Check at compile time with the
+ macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
+ possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
+
+ *Richard Levitte*
+
+ * Add a STORE module, which implements a uniform and URI based reader of
+ stores that can contain keys, certificates, CRLs and numerous other
+ objects. The main API is loosely based on a few stdio functions,
+ and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
+ OSSL_STORE_error and OSSL_STORE_close.
+ The implementation uses backends called "loaders" to implement arbitrary
+ URI schemes. There is one built in "loader" for the 'file' scheme.
+
+ *Richard Levitte*
+
+ * Add devcrypto engine. This has been implemented against cryptodev-linux,
+ then adjusted to work on FreeBSD 8.4 as well.
+ Enable by configuring with 'enable-devcryptoeng'. This is done by default
+ on BSD implementations, as cryptodev.h is assumed to exist on all of them.
+
+ *Richard Levitte*
+
+ * Module names can prefixed with OSSL_ or OPENSSL_. This affects
+ util/mkerr.pl, which is adapted to allow those prefixes, leading to
+ error code calls like this:
+
+ OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
+
+ With this change, we claim the namespaces OSSL and OPENSSL in a manner
+ that can be encoded in C. For the foreseeable future, this will only
+ affect new modules.
+
+ *Richard Levitte and Tim Hudson*
+
+ * Removed BSD cryptodev engine.
+
+ *Rich Salz*
+
+ * Add a build target 'build_all_generated', to build all generated files
+ and only that. This can be used to prepare everything that requires
+ things like perl for a system that lacks perl and then move everything
+ to that system and do the rest of the build there.
+
+ *Richard Levitte*
+
+ * In the UI interface, make it possible to duplicate the user data. This
+ can be used by engines that need to retain the data for a longer time
+ than just the call where this user data is passed.
+
+ *Richard Levitte*
+
+ * Ignore the '-named_curve auto' value for compatibility of applications
+ with OpenSSL 1.0.2.
+
+ *Tomas Mraz <tmraz@fedoraproject.org>*
+
+ * Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
+ bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
+ alerts across multiple records (some of which could be empty). In practice
+ it make no sense to send an empty alert record, or to fragment one. TLSv1.3
+ prohibts this altogether and other libraries (BoringSSL, NSS) do not
+ support this at all. Supporting it adds significant complexity to the
+ record layer, and its removal is unlikely to cause inter-operability
+ issues.
+
+ *Matt Caswell*
+
+ * Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
+ with Z. These are meant to replace LONG and ZLONG and to be size safe.
+ The use of LONG and ZLONG is discouraged and scheduled for deprecation
+ in OpenSSL 1.2.0.
+
+ *Richard Levitte*
+
+ * Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
+ 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
+
+ *Richard Levitte, Andy Polyakov*
+
+ * Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
+ does for RSA, etc.
+
+ *Richard Levitte*
+
+ * Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
+ platform rather than 'mingw'.
+
+ *Richard Levitte*
+
+ * The functions X509_STORE_add_cert and X509_STORE_add_crl return
+ success if they are asked to add an object which already exists
+ in the store. This change cascades to other functions which load
+ certificates and CRLs.
+
+ *Paul Dale*
+
+ * x86_64 assembly pack: annotate code with DWARF CFI directives to
+ facilitate stack unwinding even from assembly subroutines.
+
+ *Andy Polyakov*
+
+ * Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
+ Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
+
+ *Richard Levitte*
+
+ * Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
+ VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
+ which is the minimum version we support.
+
+ *Richard Levitte*
+
+ * Certificate time validation (X509_cmp_time) enforces stricter
+ compliance with RFC 5280. Fractional seconds and timezone offsets
+ are no longer allowed.
+
+ *Emilia Käsper*
+
+ * Add support for ARIA
+
+ *Paul Dale*
+
+ * s_client will now send the Server Name Indication (SNI) extension by
+ default unless the new "-noservername" option is used. The server name is
+ based on the host provided to the "-connect" option unless overridden by
+ using "-servername".
+
+ *Matt Caswell*
+
+ * Add support for SipHash
+
+ *Todd Short*
+
+ * OpenSSL now fails if it receives an unrecognised record type in TLS1.0
+ or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
+ prevent issues where no progress is being made and the peer continually
+ sends unrecognised record types, using up resources processing them.
+
+ *Matt Caswell*
+
+ * 'openssl passwd' can now produce SHA256 and SHA512 based output,
+ using the algorithm defined in
+ https://www.akkadia.org/drepper/SHA-crypt.txt
+
+ *Richard Levitte*
+
+ * Heartbeat support has been removed; the ABI is changed for now.
+
+ *Richard Levitte, Rich Salz*
+
+ * Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
+
+ *Emilia Käsper*
+
+ * The RSA "null" method, which was partially supported to avoid patent
+ issues, has been replaced to always returns NULL.
+
+ *Rich Salz*
+
+
+### Changes between 1.1.0h and 1.1.0i [xx XXX xxxx] ###
+
+ * Client DoS due to large DH parameter
+
+ During key agreement in a TLS handshake using a DH(E) based ciphersuite a
+ malicious server can send a very large prime value to the client. This will
+ cause the client to spend an unreasonably long period of time generating a
+ key for this prime resulting in a hang until the client has finished. This
+ could be exploited in a Denial Of Service attack.
+
+ This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
+ (CVE-2018-0732)
+
+ *Guido Vranken*
+
+ * Cache timing vulnerability in RSA Key Generation
+
+ The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
+ a cache timing side channel attack. An attacker with sufficient access to
+ mount cache timing attacks during the RSA key generation process could
+ recover the private key.
+
+ This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
+ Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
+ (CVE-2018-0737)
+
+ *Billy Brumley*
+
+ * Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
+ parameter is no longer accepted, as it leads to a corrupt table. NULL
+ pem_str is reserved for alias entries only.
+
+ *Richard Levitte*
+
+ * Revert blinding in ECDSA sign and instead make problematic addition
+ length-invariant. Switch even to fixed-length Montgomery multiplication.
+
+ *Andy Polyakov*
+
+ * Change generating and checking of primes so that the error rate of not
+ being prime depends on the intended use based on the size of the input.
+ For larger primes this will result in more rounds of Miller-Rabin.
+ The maximal error rate for primes with more than 1080 bits is lowered
+ to 2^-128.
+
+ *Kurt Roeckx, Annie Yousar*
+
+ * Increase the number of Miller-Rabin rounds for DSA key generating to 64.
+
+ *Kurt Roeckx*
+
+ * Add blinding to ECDSA and DSA signatures to protect against side channel
+ attacks discovered by Keegan Ryan (NCC Group).
+
+ *Matt Caswell*
+
+ * When unlocking a pass phrase protected PEM file or PKCS#8 container, we
+ now allow empty (zero character) pass phrases.
+
+ *Richard Levitte*
+
+ * Certificate time validation (X509_cmp_time) enforces stricter
+ compliance with RFC 5280. Fractional seconds and timezone offsets
+ are no longer allowed.
+
+ *Emilia Käsper*
+
+ * Fixed a text canonicalisation bug in CMS
+
+ Where a CMS detached signature is used with text content the text goes
+ through a canonicalisation process first prior to signing or verifying a
+ signature. This process strips trailing space at the end of lines, converts
+ line terminators to CRLF and removes additional trailing line terminators
+ at the end of a file. A bug in the canonicalisation process meant that
+ some characters, such as form-feed, were incorrectly treated as whitespace
+ and removed. This is contrary to the specification (RFC5485). This fix
+ could mean that detached text data signed with an earlier version of
+ OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
+ signed with a fixed OpenSSL may fail to verify with an earlier version of
+ OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
+ and use the "-binary" flag (for the "cms" command line application) or set
+ the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
+
+ *Matt Caswell*
+
+### Changes between 1.1.0g and 1.1.0h [27 Mar 2018] ###
+
+ * Constructed ASN.1 types with a recursive definition could exceed the stack
+
+ Constructed ASN.1 types with a recursive definition (such as can be found
+ in PKCS7) could eventually exceed the stack given malicious input with
+ excessive recursion. This could result in a Denial Of Service attack. There
+ are no such structures used within SSL/TLS that come from untrusted sources
+ so this is considered safe.
+
+ This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
+ project.
+ (CVE-2018-0739)
+
+ *Matt Caswell*
+
+ * Incorrect CRYPTO_memcmp on HP-UX PA-RISC
+
+ Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
+ effectively reduced to only comparing the least significant bit of each
+ byte. This allows an attacker to forge messages that would be considered as
+ authenticated in an amount of tries lower than that guaranteed by the
+ security claims of the scheme. The module can only be compiled by the
+ HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
+
+ This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
+ (IBM).
+ (CVE-2018-0733)
+
+ *Andy Polyakov*
+
+ * Add a build target 'build_all_generated', to build all generated files
+ and only that. This can be used to prepare everything that requires
+ things like perl for a system that lacks perl and then move everything
+ to that system and do the rest of the build there.
+
+ *Richard Levitte*
+
+ * Backport SSL_OP_NO_RENGOTIATION
+
+ OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
+ (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
+ changes this is no longer possible in 1.1.0. Therefore the new
+ SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
+ 1.1.0 to provide equivalent functionality.
+
+ Note that if an application built against 1.1.0h headers (or above) is run
+ using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
+ accepted but nothing will happen, i.e. renegotiation will not be prevented.
+
+ *Matt Caswell*
+
+ * Removed the OS390-Unix config target. It relied on a script that doesn't
+ exist.
+
+ *Rich Salz*
+
+ * rsaz_1024_mul_avx2 overflow bug on x86_64
+
+ There is an overflow bug in the AVX2 Montgomery multiplication procedure
+ used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
+ Analysis suggests that attacks against RSA and DSA as a result of this
+ defect would be very difficult to perform and are not believed likely.
+ Attacks against DH1024 are considered just feasible, because most of the
+ work necessary to deduce information about a private key may be performed
+ offline. The amount of resources required for such an attack would be
+ significant. However, for an attack on TLS to be meaningful, the server
+ would have to share the DH1024 private key among multiple clients, which is
+ no longer an option since CVE-2016-0701.
+
+ This only affects processors that support the AVX2 but not ADX extensions
+ like Intel Haswell (4th generation).
+
+ This issue was reported to OpenSSL by David Benjamin (Google). The issue
+ was originally found via the OSS-Fuzz project.
+ (CVE-2017-3738)
+
+ *Andy Polyakov*
+
+### Changes between 1.1.0f and 1.1.0g [2 Nov 2017] ###
+
+ * bn_sqrx8x_internal carry bug on x86_64
+
+ There is a carry propagating bug in the x86_64 Montgomery squaring
+ procedure. No EC algorithms are affected. Analysis suggests that attacks
+ against RSA and DSA as a result of this defect would be very difficult to
+ perform and are not believed likely. Attacks against DH are considered just
+ feasible (although very difficult) because most of the work necessary to
+ deduce information about a private key may be performed offline. The amount
+ of resources required for such an attack would be very significant and
+ likely only accessible to a limited number of attackers. An attacker would
+ additionally need online access to an unpatched system using the target
+ private key in a scenario with persistent DH parameters and a private
+ key that is shared between multiple clients.
+
+ This only affects processors that support the BMI1, BMI2 and ADX extensions
+ like Intel Broadwell (5th generation) and later or AMD Ryzen.
+
+ This issue was reported to OpenSSL by the OSS-Fuzz project.
+ (CVE-2017-3736)
+
+ *Andy Polyakov*
+
+ * Malformed X.509 IPAddressFamily could cause OOB read
+
+ If an X.509 certificate has a malformed IPAddressFamily extension,
+ OpenSSL could do a one-byte buffer overread. The most likely result
+ would be an erroneous display of the certificate in text format.
+
+ This issue was reported to OpenSSL by the OSS-Fuzz project.
+ (CVE-2017-3735)
+
+ *Rich Salz*
+
+### Changes between 1.1.0e and 1.1.0f [25 May 2017] ###
+
+ * Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
+ platform rather than 'mingw'.
+
+ *Richard Levitte*
+
+ * Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
+ VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
+ which is the minimum version we support.
+
+ *Richard Levitte*
+
+### Changes between 1.1.0d and 1.1.0e [16 Feb 2017] ###
+
+ * Encrypt-Then-Mac renegotiation crash
+
+ During a renegotiation handshake if the Encrypt-Then-Mac extension is
+ negotiated where it was not in the original handshake (or vice-versa) then
+ this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
+ and servers are affected.
+
+ This issue was reported to OpenSSL by Joe Orton (Red Hat).
+ (CVE-2017-3733)
+
+ *Matt Caswell*
+
+### Changes between 1.1.0c and 1.1.0d [26 Jan 2017] ###
+
+ * Truncated packet could crash via OOB read
+
+ If one side of an SSL/TLS path is running on a 32-bit host and a specific
+ cipher is being used, then a truncated packet can cause that host to
+ perform an out-of-bounds read, usually resulting in a crash.
+
+ This issue was reported to OpenSSL by Robert Święcki of Google.
+ (CVE-2017-3731)
+
+ *Andy Polyakov*
+
+ * Bad (EC)DHE parameters cause a client crash
+
+ If a malicious server supplies bad parameters for a DHE or ECDHE key
+ exchange then this can result in the client attempting to dereference a
+ NULL pointer leading to a client crash. This could be exploited in a Denial
+ of Service attack.
+
+ This issue was reported to OpenSSL by Guido Vranken.
+ (CVE-2017-3730)
+
+ *Matt Caswell*
+
+ * BN_mod_exp may produce incorrect results on x86_64
+
+ There is a carry propagating bug in the x86_64 Montgomery squaring
+ procedure. No EC algorithms are affected. Analysis suggests that attacks
+ against RSA and DSA as a result of this defect would be very difficult to
+ perform and are not believed likely. Attacks against DH are considered just
+ feasible (although very difficult) because most of the work necessary to
+ deduce information about a private key may be performed offline. The amount
+ of resources required for such an attack would be very significant and
+ likely only accessible to a limited number of attackers. An attacker would
+ additionally need online access to an unpatched system using the target
+ private key in a scenario with persistent DH parameters and a private
+ key that is shared between multiple clients. For example this can occur by
+ default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
+ similar to CVE-2015-3193 but must be treated as a separate problem.
+
+ This issue was reported to OpenSSL by the OSS-Fuzz project.
+ (CVE-2017-3732)
+
+ *Andy Polyakov*
+
+### Changes between 1.1.0b and 1.1.0c [10 Nov 2016] ###
+
+ * ChaCha20/Poly1305 heap-buffer-overflow
+
+ TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
+ a DoS attack by corrupting larger payloads. This can result in an OpenSSL
+ crash. This issue is not considered to be exploitable beyond a DoS.
+
+ This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
+ (CVE-2016-7054)
+
+ *Richard Levitte*
+
+ * CMS Null dereference
+
+ Applications parsing invalid CMS structures can crash with a NULL pointer
+ dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
+ type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
+ structure callback if an attempt is made to free certain invalid encodings.
+ Only CHOICE structures using a callback which do not handle NULL value are
+ affected.
+
+ This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
+ (CVE-2016-7053)
+
+ *Stephen Henson*
+
+ * Montgomery multiplication may produce incorrect results
+
+ There is a carry propagating bug in the Broadwell-specific Montgomery
+ multiplication procedure that handles input lengths divisible by, but
+ longer than 256 bits. Analysis suggests that attacks against RSA, DSA
+ and DH private keys are impossible. This is because the subroutine in
+ question is not used in operations with the private key itself and an input
+ of the attacker's direct choice. Otherwise the bug can manifest itself as
+ transient authentication and key negotiation failures or reproducible
+ erroneous outcome of public-key operations with specially crafted input.
+ Among EC algorithms only Brainpool P-512 curves are affected and one
+ presumably can attack ECDH key negotiation. Impact was not analyzed in
+ detail, because pre-requisites for attack are considered unlikely. Namely
+ multiple clients have to choose the curve in question and the server has to
+ share the private key among them, neither of which is default behaviour.
+ Even then only clients that chose the curve will be affected.
+
+ This issue was publicly reported as transient failures and was not
+ initially recognized as a security issue. Thanks to Richard Morgan for
+ providing reproducible case.
+ (CVE-2016-7055)
+
+ *Andy Polyakov*
+
+ * Removed automatic addition of RPATH in shared libraries and executables,
+ as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
+
+ *Richard Levitte*
+
+### Changes between 1.1.0a and 1.1.0b [26 Sep 2016] ###
+
+ * Fix Use After Free for large message sizes
+
+ The patch applied to address CVE-2016-6307 resulted in an issue where if a
+ message larger than approx 16k is received then the underlying buffer to
+ store the incoming message is reallocated and moved. Unfortunately a
+ dangling pointer to the old location is left which results in an attempt to
+ write to the previously freed location. This is likely to result in a
+ crash, however it could potentially lead to execution of arbitrary code.
+
+ This issue only affects OpenSSL 1.1.0a.
+
+ This issue was reported to OpenSSL by Robert Święcki.
+ (CVE-2016-6309)
+
+ *Matt Caswell*
+
+### Changes between 1.1.0 and 1.1.0a [22 Sep 2016] ###
+
+ * OCSP Status Request extension unbounded memory growth
+
+ A malicious client can send an excessively large OCSP Status Request
+ extension. If that client continually requests renegotiation, sending a
+ large OCSP Status Request extension each time, then there will be unbounded
+ memory growth on the server. This will eventually lead to a Denial Of
+ Service attack through memory exhaustion. Servers with a default
+ configuration are vulnerable even if they do not support OCSP. Builds using
+ the "no-ocsp" build time option are not affected.
+
+ This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
+ (CVE-2016-6304)
+
+ *Matt Caswell*
+
+ * SSL_peek() hang on empty record
+
+ OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
+ sends an empty record. This could be exploited by a malicious peer in a
+ Denial Of Service attack.
+
+ This issue was reported to OpenSSL by Alex Gaynor.
+ (CVE-2016-6305)
+
+ *Matt Caswell*
+
+ * Excessive allocation of memory in tls_get_message_header() and
+ dtls1_preprocess_fragment()
+
+ A (D)TLS message includes 3 bytes for its length in the header for the
+ message. This would allow for messages up to 16Mb in length. Messages of
+ this length are excessive and OpenSSL includes a check to ensure that a
+ peer is sending reasonably sized messages in order to avoid too much memory
+ being consumed to service a connection. A flaw in the logic of version
+ 1.1.0 means that memory for the message is allocated too early, prior to
+ the excessive message length check. Due to way memory is allocated in
+ OpenSSL this could mean an attacker could force up to 21Mb to be allocated
+ to service a connection. This could lead to a Denial of Service through
+ memory exhaustion. However, the excessive message length check still takes
+ place, and this would cause the connection to immediately fail. Assuming
+ that the application calls SSL_free() on the failed connection in a timely
+ manner then the 21Mb of allocated memory will then be immediately freed
+ again. Therefore the excessive memory allocation will be transitory in
+ nature. This then means that there is only a security impact if:
+
+ 1) The application does not call SSL_free() in a timely manner in the event
+ that the connection fails
+ or
+ 2) The application is working in a constrained environment where there is
+ very little free memory
+ or
+ 3) The attacker initiates multiple connection attempts such that there are
+ multiple connections in a state where memory has been allocated for the
+ connection; SSL_free() has not yet been called; and there is insufficient
+ memory to service the multiple requests.
+
+ Except in the instance of (1) above any Denial Of Service is likely to be
+ transitory because as soon as the connection fails the memory is
+ subsequently freed again in the SSL_free() call. However there is an
+ increased risk during this period of application crashes due to the lack of
+ memory - which would then mean a more serious Denial of Service.
+
+ This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
+ (CVE-2016-6307 and CVE-2016-6308)
+
+ *Matt Caswell*
+
+ * solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
+ had to be removed. Primary reason is that vendor assembler can't
+ assemble our modules with -KPIC flag. As result it, assembly
+ support, was not even available as option. But its lack means
+ lack of side-channel resistant code, which is incompatible with
+ security by todays standards. Fortunately gcc is readily available
+ prepackaged option, which we firmly point at...
+
+ *Andy Polyakov*
+
+### Changes between 1.0.2h and 1.1.0 [25 Aug 2016] ###
+
+ * Windows command-line tool supports UTF-8 opt-in option for arguments
+ and console input. Setting OPENSSL_WIN32_UTF8 environment variable
+ (to any value) allows Windows user to access PKCS#12 file generated
+ with Windows CryptoAPI and protected with non-ASCII password, as well
+ as files generated under UTF-8 locale on Linux also protected with
+ non-ASCII password.
+
+ *Andy Polyakov*
+
+ * To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
+ have been disabled by default and removed from DEFAULT, just like RC4.
+ See the RC4 item below to re-enable both.
+
+ *Rich Salz*
+
+ * The method for finding the storage location for the Windows RAND seed file
+ has changed. First we check %RANDFILE%. If that is not set then we check
+ the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
+ all else fails we fall back to C:\.
+
+ *Matt Caswell*
+
+ * The EVP_EncryptUpdate() function has had its return type changed from void
+ to int. A return of 0 indicates and error while a return of 1 indicates
+ success.
+
+ *Matt Caswell*
+
+ * The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
+ DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
+ off the constant time implementation for RSA, DSA and DH have been made
+ no-ops and deprecated.
+
+ *Matt Caswell*
+
+ * Windows RAND implementation was simplified to only get entropy by
+ calling CryptGenRandom(). Various other RAND-related tickets
+ were also closed.
+
+ *Joseph Wylie Yandle, Rich Salz*
+
+ * The stack and lhash API's were renamed to start with OPENSSL_SK_
+ and OPENSSL_LH_, respectively. The old names are available
+ with API compatibility. They new names are now completely documented.
+
+ *Rich Salz*
+
+ * Unify TYPE_up_ref(obj) methods signature.
+ SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
+ X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
+ int (instead of void) like all others TYPE_up_ref() methods.
+ So now these methods also check the return value of CRYPTO_atomic_add(),
+ and the validity of object reference counter.
+
+ *fdasilvayy@gmail.com*
+
+ * With Windows Visual Studio builds, the .pdb files are installed
+ alongside the installed libraries and executables. For a static
+ library installation, ossl_static.pdb is the associate compiler
+ generated .pdb file to be used when linking programs.
+
+ *Richard Levitte*
+
+ * Remove openssl.spec. Packaging files belong with the packagers.
+
+ *Richard Levitte*
+
+ * Automatic Darwin/OSX configuration has had a refresh, it will now
+ recognise x86_64 architectures automatically. You can still decide
+ to build for a different bitness with the environment variable
+ KERNEL_BITS (can be 32 or 64), for example:
+
+ KERNEL_BITS=32 ./config
+
+ *Richard Levitte*
+
+ * Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
+ 256 bit AES and HMAC with SHA256.
+
+ *Steve Henson*
+
+ * Remove support for MIPS o32 ABI on IRIX (and IRIX only).
+
+ *Andy Polyakov*
+
+ * Triple-DES ciphers have been moved from HIGH to MEDIUM.
+
+ *Rich Salz*
+
+ * To enable users to have their own config files and build file templates,
+ Configure looks in the directory indicated by the environment variable
+ OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
+ directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
+ name and is used as is.
+
+ *Richard Levitte*
+
+ * The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
+ X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
+ X509_CERT_FILE_CTX was removed.
+
+ *Rich Salz*
+
+ * "shared" builds are now the default. To create only static libraries use
+ the "no-shared" Configure option.
+
+ *Matt Caswell*
+
+ * Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
+ All of these option have not worked for some while and are fundamental
+ algorithms.
+
+ *Matt Caswell*
+
+ * Make various cleanup routines no-ops and mark them as deprecated. Most
+ global cleanup functions are no longer required because they are handled
+ via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
+ Explicitly de-initing can cause problems (e.g. where a library that uses
+ OpenSSL de-inits, but an application is still using it). The affected
+ functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
+ EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
+ RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
+ COMP_zlib_cleanup().
+
+ *Matt Caswell*
+
+ * --strict-warnings no longer enables runtime debugging options
+ such as REF_DEBUG. Instead, debug options are automatically
+ enabled with '--debug' builds.
+
+ *Andy Polyakov, Emilia Käsper*
+
+ * Made DH and DH_METHOD opaque. The structures for managing DH objects
+ have been moved out of the public header files. New functions for managing
+ these have been added.
+
+ *Matt Caswell*
+
+ * Made RSA and RSA_METHOD opaque. The structures for managing RSA
+ objects have been moved out of the public header files. New
+ functions for managing these have been added.
+
+ *Richard Levitte*
+
+ * Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
+ have been moved out of the public header files. New functions for managing
+ these have been added.
+
+ *Matt Caswell*
+
+ * Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
+ moved out of the public header files. New functions for managing these
+ have been added.
+
+ *Matt Caswell*
+
+ * Removed no-rijndael as a config option. Rijndael is an old name for AES.
+
+ *Matt Caswell*
+
+ * Removed the mk1mf build scripts.
+
+ *Richard Levitte*
+
+ * Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
+ it is always safe to #include a header now.
+
+ *Rich Salz*
+
+ * Removed the aged BC-32 config and all its supporting scripts
+
+ *Richard Levitte*
+
+ * Removed support for Ultrix, Netware, and OS/2.
+
+ *Rich Salz*
+
+ * Add support for HKDF.
+
+ *Alessandro Ghedini*
+
+ * Add support for blake2b and blake2s
+
+ *Bill Cox*
+
+ * Added support for "pipelining". Ciphers that have the
+ EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
+ encryptions/decryptions simultaneously. There are currently no built-in
+ ciphers with this property but the expectation is that engines will be able
+ to offer it to significantly improve throughput. Support has been extended
+ into libssl so that multiple records for a single connection can be
+ processed in one go (for >=TLS 1.1).
+
+ *Matt Caswell*
+
+ * Added the AFALG engine. This is an async capable engine which is able to
+ offload work to the Linux kernel. In this initial version it only supports
+ AES128-CBC. The kernel must be version 4.1.0 or greater.
+
+ *Catriona Lucey*
+
+ * OpenSSL now uses a new threading API. It is no longer necessary to
+ set locking callbacks to use OpenSSL in a multi-threaded environment. There
+ are two supported threading models: pthreads and windows threads. It is
+ also possible to configure OpenSSL at compile time for "no-threads". The
+ old threading API should no longer be used. The functions have been
+ replaced with "no-op" compatibility macros.
+
+ *Alessandro Ghedini, Matt Caswell*
+
+ * Modify behavior of ALPN to invoke callback after SNI/servername
+ callback, such that updates to the SSL_CTX affect ALPN.
+
+ *Todd Short*
+
+ * Add SSL_CIPHER queries for authentication and key-exchange.
+
+ *Todd Short*
+
+ * Changes to the DEFAULT cipherlist:
+ - Prefer (EC)DHE handshakes over plain RSA.
+ - Prefer AEAD ciphers over legacy ciphers.
+ - Prefer ECDSA over RSA when both certificates are available.
+ - Prefer TLSv1.2 ciphers/PRF.
+ - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
+ default cipherlist.
+
+ *Emilia Käsper*
+
+ * Change the ECC default curve list to be this, in order: x25519,
+ secp256r1, secp521r1, secp384r1.
+
+ *Rich Salz*
+
+ * RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
+ disabled by default. They can be re-enabled using the
+ enable-weak-ssl-ciphers option to Configure.
+
+ *Matt Caswell*
+
+ * If the server has ALPN configured, but supports no protocols that the
+ client advertises, send a fatal "no_application_protocol" alert.
+ This behaviour is SHALL in RFC 7301, though it isn't universally
+ implemented by other servers.
+
+ *Emilia Käsper*
+
+ * Add X25519 support.
+ Add ASN.1 and EVP_PKEY methods for X25519. This includes support
+ for public and private key encoding using the format documented in
+ draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
+ key generation and key derivation.
+
+ TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
+ X25519(29).
+
+ *Steve Henson*
+
+ * Deprecate SRP_VBASE_get_by_user.
+ SRP_VBASE_get_by_user had inconsistent memory management behaviour.
+ In order to fix an unavoidable memory leak (CVE-2016-0798),
+ SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
+ seed, even if the seed is configured.
+
+ Users should use SRP_VBASE_get1_by_user instead. Note that in
+ SRP_VBASE_get1_by_user, caller must free the returned value. Note
+ also that even though configuring the SRP seed attempts to hide
+ invalid usernames by continuing the handshake with fake
+ credentials, this behaviour is not constant time and no strong
+ guarantees are made that the handshake is indistinguishable from
+ that of a valid user.
+
+ *Emilia Käsper*
+
+ * Configuration change; it's now possible to build dynamic engines
+ without having to build shared libraries and vice versa. This
+ only applies to the engines in engines/, those in crypto/engine/
+ will always be built into libcrypto (i.e. "static").
+
+ Building dynamic engines is enabled by default; to disable, use
+ the configuration option "disable-dynamic-engine".
+
+ The only requirements for building dynamic engines are the
+ presence of the DSO module and building with position independent
+ code, so they will also automatically be disabled if configuring
+ with "disable-dso" or "disable-pic".
+
+ The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
+ are also taken away from openssl/opensslconf.h, as they are
+ irrelevant.
+
+ *Richard Levitte*
+
+ * Configuration change; if there is a known flag to compile
+ position independent code, it will always be applied on the
+ libcrypto and libssl object files, and never on the application
+ object files. This means other libraries that use routines from
+ libcrypto / libssl can be made into shared libraries regardless
+ of how OpenSSL was configured.
+
+ If this isn't desirable, the configuration options "disable-pic"
+ or "no-pic" can be used to disable the use of PIC. This will
+ also disable building shared libraries and dynamic engines.
+
+ *Richard Levitte*
+
+ * Removed JPAKE code. It was experimental and has no wide use.
+
+ *Rich Salz*
+
+ * The INSTALL_PREFIX Makefile variable has been renamed to
+ DESTDIR. That makes for less confusion on what this variable
+ is for. Also, the configuration option --install_prefix is
+ removed.
+
+ *Richard Levitte*
+
+ * Heartbeat for TLS has been removed and is disabled by default
+ for DTLS; configure with enable-heartbeats. Code that uses the
+ old #define's might need to be updated.
+
+ *Emilia Käsper, Rich Salz*
+
+ * Rename REF_CHECK to REF_DEBUG.
+
+ *Rich Salz*
+
+ * New "unified" build system
+
+ The "unified" build system is aimed to be a common system for all
+ platforms we support. With it comes new support for VMS.
+
+ This system builds supports building in a different directory tree
+ than the source tree. It produces one Makefile (for unix family
+ or lookalikes), or one descrip.mms (for VMS).
+
+ The source of information to make the Makefile / descrip.mms is
+ small files called 'build.info', holding the necessary
+ information for each directory with source to compile, and a
+ template in Configurations, like unix-Makefile.tmpl or
+ descrip.mms.tmpl.
+
+ With this change, the library names were also renamed on Windows
+ and on VMS. They now have names that are closer to the standard
+ on Unix, and include the major version number, and in certain
+ cases, the architecture they are built for. See "Notes on shared
+ libraries" in INSTALL.
+
+ We rely heavily on the perl module Text::Template.
+
+ *Richard Levitte*
+
+ * Added support for auto-initialisation and de-initialisation of the library.
+ OpenSSL no longer requires explicit init or deinit routines to be called,
+ except in certain circumstances. See the OPENSSL_init_crypto() and
+ OPENSSL_init_ssl() man pages for further information.
+
+ *Matt Caswell*
+
+ * The arguments to the DTLSv1_listen function have changed. Specifically the
+ "peer" argument is now expected to be a BIO_ADDR object.
+
+ * Rewrite of BIO networking library. The BIO library lacked consistent
+ support of IPv6, and adding it required some more extensive
+ modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
+ which hold all types of addresses and chains of address information.
+ It also introduces a new API, with functions like BIO_socket,
+ BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
+ The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
+ have been adapted accordingly.
+
+ *Richard Levitte*
+
+ * RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
+ the leading 0-byte.
+
+ *Emilia Käsper*
+
+ * CRIME protection: disable compression by default, even if OpenSSL is
+ compiled with zlib enabled. Applications can still enable compression
+ by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
+ using the SSL_CONF library to configure compression.
+
+ *Emilia Käsper*
+
+ * The signature of the session callback configured with
+ SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
+ was explicitly marked as 'const unsigned char*' instead of
+ 'unsigned char*'.
+
+ *Emilia Käsper*
+
+ * Always DPURIFY. Remove the use of uninitialized memory in the
+ RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
+
+ *Emilia Käsper*
+
+ * Removed many obsolete configuration items, including
+ DES_PTR, DES_RISC1, DES_RISC2, DES_INT
+ MD2_CHAR, MD2_INT, MD2_LONG
+ BF_PTR, BF_PTR2
+ IDEA_SHORT, IDEA_LONG
+ RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
+
+ *Rich Salz, with advice from Andy Polyakov*
+
+ * Many BN internals have been moved to an internal header file.
+
+ *Rich Salz with help from Andy Polyakov*
+
+ * Configuration and writing out the results from it has changed.
+ Files such as Makefile include/openssl/opensslconf.h and are now
+ produced through general templates, such as Makefile.in and
+ crypto/opensslconf.h.in and some help from the perl module
+ Text::Template.
+
+ Also, the center of configuration information is no longer
+ Makefile. Instead, Configure produces a perl module in
+ configdata.pm which holds most of the config data (in the hash
+ table %config), the target data that comes from the target
+ configuration in one of the Configurations/*.conf files (in
+ %target).
+
+ *Richard Levitte*
+
+ * To clarify their intended purposes, the Configure options
+ --prefix and --openssldir change their semantics, and become more
+ straightforward and less interdependent.
+
+ --prefix shall be used exclusively to give the location INSTALLTOP
+ where programs, scripts, libraries, include files and manuals are
+ going to be installed. The default is now /usr/local.
+
+ --openssldir shall be used exclusively to give the default
+ location OPENSSLDIR where certificates, private keys, CRLs are
+ managed. This is also where the default openssl.cnf gets
+ installed.
+ If the directory given with this option is a relative path, the
+ values of both the --prefix value and the --openssldir value will
+ be combined to become OPENSSLDIR.
+ The default for --openssldir is INSTALLTOP/ssl.
+
+ Anyone who uses --openssldir to specify where OpenSSL is to be
+ installed MUST change to use --prefix instead.
+
+ *Richard Levitte*
+
+ * The GOST engine was out of date and therefore it has been removed. An up
+ to date GOST engine is now being maintained in an external repository.
+ See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
+ support for GOST ciphersuites (these are only activated if a GOST engine
+ is present).
+
+ *Matt Caswell*
+
+ * EGD is no longer supported by default; use enable-egd when
+ configuring.
+
+ *Ben Kaduk and Rich Salz*
+
+ * The distribution now has Makefile.in files, which are used to
+ create Makefile's when Configure is run. *Configure must be run
+ before trying to build now.*
+
+ *Rich Salz*
+
+ * The return value for SSL_CIPHER_description() for error conditions
+ has changed.
+
+ *Rich Salz*
+
+ * Support for RFC6698/RFC7671 DANE TLSA peer authentication.
+
+ Obtaining and performing DNSSEC validation of TLSA records is
+ the application's responsibility. The application provides
+ the TLSA records of its choice to OpenSSL, and these are then
+ used to authenticate the peer.
+
+ The TLSA records need not even come from DNS. They can, for
+ example, be used to implement local end-entity certificate or
+ trust-anchor "pinning", where the "pin" data takes the form
+ of TLSA records, which can augment or replace verification
+ based on the usual WebPKI public certification authorities.
+
+ *Viktor Dukhovni*
+
+ * Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
+ continues to support deprecated interfaces in default builds.
+ However, applications are strongly advised to compile their
+ source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
+ the declarations of all interfaces deprecated in 0.9.8, 1.0.0
+ or the 1.1.0 releases.
+
+ In environments in which all applications have been ported to
+ not use any deprecated interfaces OpenSSL's Configure script
+ should be used with the --api=1.1.0 option to entirely remove
+ support for the deprecated features from the library and
+ unconditionally disable them in the installed headers.
+ Essentially the same effect can be achieved with the "no-deprecated"
+ argument to Configure, except that this will always restrict
+ the build to just the latest API, rather than a fixed API
+ version.
+
+ As applications are ported to future revisions of the API,
+ they should update their compile-time OPENSSL_API_COMPAT define
+ accordingly, but in most cases should be able to continue to
+ compile with later releases.
+
+ The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
+ 0x10000000L and 0x00908000L, respectively. However those
+ versions did not support the OPENSSL_API_COMPAT feature, and
+ so applications are not typically tested for explicit support
+ of just the undeprecated features of either release.
+
+ *Viktor Dukhovni*
+
+ * Add support for setting the minimum and maximum supported protocol.
+ It can bet set via the SSL_set_min_proto_version() and
+ SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
+ MaxProtocol. It's recommended to use the new APIs to disable
+ protocols instead of disabling individual protocols using
+ SSL_set_options() or SSL_CONF's Protocol. This change also
+ removes support for disabling TLS 1.2 in the OpenSSL TLS
+ client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
+
+ *Kurt Roeckx*
+
+ * Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
+
+ *Andy Polyakov*
+
+ * New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
+ and integrates ECDSA and ECDH functionality into EC. Implementations can
+ now redirect key generation and no longer need to convert to or from
+ ECDSA_SIG format.
+
+ Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
+ include the ec.h header file instead.
+
+ *Steve Henson*
+
+ * Remove support for all 40 and 56 bit ciphers. This includes all the export
+ ciphers who are no longer supported and drops support the ephemeral RSA key
+ exchange. The LOW ciphers currently doesn't have any ciphers in it.
+
+ *Kurt Roeckx*
+
+ * Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
+ opaque. For HMAC_CTX, the following constructors and destructors
+ were added:
+
+ HMAC_CTX *HMAC_CTX_new(void);
+ void HMAC_CTX_free(HMAC_CTX *ctx);
+
+ For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
+ destroy such methods has been added. See EVP_MD_meth_new(3) and
+ EVP_CIPHER_meth_new(3) for documentation.
+
+ Additional changes:
+ 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
+ HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
+ EVP_MD_CTX_reset() should be called instead to reinitialise
+ an already created structure.
+ 2) For consistency with the majority of our object creators and
+ destructors, EVP_MD_CTX_(create|destroy) were renamed to
+ EVP_MD_CTX_(new|free). The old names are retained as macros
+ for deprecated builds.
+
+ *Richard Levitte*
+
+ * Added ASYNC support. Libcrypto now includes the async sub-library to enable
+ cryptographic operations to be performed asynchronously as long as an
+ asynchronous capable engine is used. See the ASYNC_start_job() man page for
+ further details. Libssl has also had this capability integrated with the
+ introduction of the new mode SSL_MODE_ASYNC and associated error
+ SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
+ pages. This work was developed in partnership with Intel Corp.
+
+ *Matt Caswell*
+
+ * SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
+ always enabled now. If you want to disable the support you should
+ exclude it using the list of supported ciphers. This also means that the
+ "-no_ecdhe" option has been removed from s_server.
+
+ *Kurt Roeckx*
+
+ * SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
+ SSL_{CTX_}set1_curves() which can set a list.
+
+ *Kurt Roeckx*
+
+ * Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
+ curve you want to support using SSL_{CTX_}set1_curves().
+
+ *Kurt Roeckx*
+
+ * State machine rewrite. The state machine code has been significantly
+ refactored in order to remove much duplication of code and solve issues
+ with the old code (see ssl/statem/README for further details). This change
+ does have some associated API changes. Notably the SSL_state() function
+ has been removed and replaced by SSL_get_state which now returns an
+ "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
+ altogether. The previous handshake states defined in ssl.h and ssl3.h have
+ also been removed.
+
+ *Matt Caswell*
+
+ * All instances of the string "ssleay" in the public API were replaced
+ with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
+ Some error codes related to internal RSA_eay API's were renamed.
+
+ *Rich Salz*
+
+ * The demo files in crypto/threads were moved to demo/threads.
+
+ *Rich Salz*
+
+ * Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
+ sureware and ubsec.
+
+ *Matt Caswell, Rich Salz*
+
+ * New ASN.1 embed macro.
+
+ New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
+ structure is not allocated: it is part of the parent. That is instead of
+
+ FOO *x;
+
+ it must be:
+
+ FOO x;
+
+ This reduces memory fragmentation and make it impossible to accidentally
+ set a mandatory field to NULL.
+
+ This currently only works for some fields specifically a SEQUENCE, CHOICE,
+ or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
+ equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
+ SEQUENCE OF.
+
+ *Steve Henson*
+
+ * Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
+
+ *Emilia Käsper*
+
+ * Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
+ in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
+ an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
+ DES and RC4 ciphersuites.
+
+ *Matt Caswell*
+
+ * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
+ This changes the decoding behaviour for some invalid messages,
+ though the change is mostly in the more lenient direction, and
+ legacy behaviour is preserved as much as possible.
+
+ *Emilia Käsper*
+
+ * Fix no-stdio build.
+ * David Woodhouse <David.Woodhouse@intel.com> and also
+ Ivan Nestlerode <ivan.nestlerode@sonos.com> *
+
+ * New testing framework
+ The testing framework has been largely rewritten and is now using
+ perl and the perl modules Test::Harness and an extended variant of
+ Test::More called OpenSSL::Test to do its work. All test scripts in
+ test/ have been rewritten into test recipes, and all direct calls to
+ executables in test/Makefile have become individual recipes using the
+ simplified testing OpenSSL::Test::Simple.
+
+ For documentation on our testing modules, do:
+
+ perldoc test/testlib/OpenSSL/Test/Simple.pm
+ perldoc test/testlib/OpenSSL/Test.pm
+
+ *Richard Levitte*
+
+ * Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
+ are used; the latter aborts on memory leaks (usually checked on exit).
+ Some undocumented "set malloc, etc., hooks" functions were removed
+ and others were changed. All are now documented.
+
+ *Rich Salz*
+
+ * In DSA_generate_parameters_ex, if the provided seed is too short,
+ return an error
+
+ *Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>*
+
+ * Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
+ from RFC4279, RFC4785, RFC5487, RFC5489.
+
+ Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
+ original RSA_PSK patch.
+
+ *Steve Henson*
+
+ * Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
+ era flag was never set throughout the codebase (only read). Also removed
+ SSL3_FLAGS_POP_BUFFER which was only used if
+ SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
+
+ *Matt Caswell*
+
+ * Changed the default name options in the "ca", "crl", "req" and "x509"
+ to be "oneline" instead of "compat".
+
+ *Richard Levitte*
+
+ * Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
+ not aware of clients that still exhibit this bug, and the workaround
+ hasn't been working properly for a while.
+
+ *Emilia Käsper*
+
+ * The return type of BIO_number_read() and BIO_number_written() as well as
+ the corresponding num_read and num_write members in the BIO structure has
+ changed from unsigned long to uint64_t. On platforms where an unsigned
+ long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
+ transferred.
+
+ *Matt Caswell*
+
+ * Given the pervasive nature of TLS extensions it is inadvisable to run
+ OpenSSL without support for them. It also means that maintaining
+ the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
+ not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
+
+ *Matt Caswell*
+
+ * Removed support for the two export grade static DH ciphersuites
+ EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
+ were newly added (along with a number of other static DH ciphersuites) to
+ 1.0.2. However the two export ones have *never* worked since they were
+ introduced. It seems strange in any case to be adding new export
+ ciphersuites, and given "logjam" it also does not seem correct to fix them.
+
+ *Matt Caswell*
+
+ * Version negotiation has been rewritten. In particular SSLv23_method(),
+ SSLv23_client_method() and SSLv23_server_method() have been deprecated,
+ and turned into macros which simply call the new preferred function names
+ TLS_method(), TLS_client_method() and TLS_server_method(). All new code
+ should use the new names instead. Also as part of this change the ssl23.h
+ header file has been removed.
+
+ *Matt Caswell*
+
+ * Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
+ code and the associated standard is no longer considered fit-for-purpose.
+
+ *Matt Caswell*
+
+ * RT2547 was closed. When generating a private key, try to make the
+ output file readable only by the owner. This behavior change might
+ be noticeable when interacting with other software.
+
+ * Documented all exdata functions. Added CRYPTO_free_ex_index.
+ Added a test.
+
+ *Rich Salz*
+
+ * Added HTTP GET support to the ocsp command.
+
+ *Rich Salz*
+
+ * Changed default digest for the dgst and enc commands from MD5 to
+ sha256
+
+ *Rich Salz*
+
+ * RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
+
+ *Matt Caswell*
+
+ * Added support for TLS extended master secret from
+ draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
+ initial patch which was a great help during development.
+
+ *Steve Henson*
+
+ * All libssl internal structures have been removed from the public header
+ files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
+ now redundant). Users should not attempt to access internal structures
+ directly. Instead they should use the provided API functions.
+
+ *Matt Caswell*
+
+ * config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
+ Access to deprecated functions can be re-enabled by running config with
+ "enable-deprecated". In addition applications wishing to use deprecated
+ functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
+ will, by default, disable some transitive includes that previously existed
+ in the header files (e.g. ec.h will no longer, by default, include bn.h)
+
+ *Matt Caswell*
+
+ * Added support for OCB mode. OpenSSL has been granted a patent license
+ compatible with the OpenSSL license for use of OCB. Details are available
+ at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
+ for OCB can be removed by calling config with no-ocb.
+
+ *Matt Caswell*
+
+ * SSLv2 support has been removed. It still supports receiving a SSLv2
+ compatible client hello.
+
+ *Kurt Roeckx*
+
+ * Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
+ done while fixing the error code for the key-too-small case.
+
+ *Annie Yousar <a.yousar@informatik.hu-berlin.de>*
+
+ * CA.sh has been removed; use CA.pl instead.
+
+ *Rich Salz*
+
+ * Removed old DES API.
+
+ *Rich Salz*
+
+ * Remove various unsupported platforms:
+ Sony NEWS4
+ BEOS and BEOS_R5
+ NeXT
+ SUNOS
+ MPE/iX
+ Sinix/ReliantUNIX RM400
+ DGUX
+ NCR
+ Tandem
+ Cray
+ 16-bit platforms such as WIN16
+
+ *Rich Salz*
+
+ * Clean up OPENSSL_NO_xxx #define's
+ - Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
+ - Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
+ - OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
+ - OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
+ - OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
+ - Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
+ OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
+ OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
+ OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
+ - Remove MS_STATIC; it's a relic from platforms <32 bits.
+
+ *Rich Salz*
+
+ * Cleaned up dead code
+ Remove all but one '#ifdef undef' which is to be looked at.
+
+ *Rich Salz*
+
+ * Clean up calling of xxx_free routines.
+ Just like free(), fix most of the xxx_free routines to accept
+ NULL. Remove the non-null checks from callers. Save much code.
+
+ *Rich Salz*
+
+ * Add secure heap for storage of private keys (when possible).
+ Add BIO_s_secmem(), CBIGNUM, etc.
+ Contributed by Akamai Technologies under our Corporate CLA.
+
+ *Rich Salz*
+
+ * Experimental support for a new, fast, unbiased prime candidate generator,
+ bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
+
+ *Felix Laurie von Massenbach <felix@erbridge.co.uk>*
+
+ * New output format NSS in the sess_id command line tool. This allows
+ exporting the session id and the master key in NSS keylog format.
+
+ *Martin Kaiser <martin@kaiser.cx>*
+
+ * Harmonize version and its documentation. -f flag is used to display
+ compilation flags.
+
+ *mancha <mancha1@zoho.com>*
+
+ * Fix eckey_priv_encode so it immediately returns an error upon a failure
+ in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
+
+ *mancha <mancha1@zoho.com>*
+
+ * Fix some double frees. These are not thought to be exploitable.
+
+ *mancha <mancha1@zoho.com>*
+
+ * A missing bounds check in the handling of the TLS heartbeat extension
+ can be used to reveal up to 64k of memory to a connected client or
+ server.
+
+ Thanks for Neel Mehta of Google Security for discovering this bug and to
+ Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
+ preparing the fix (CVE-2014-0160)
+
+ *Adam Langley, Bodo Moeller*
+
+ * Fix for the attack described in the paper "Recovering OpenSSL
+ ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
+ by Yuval Yarom and Naomi Benger. Details can be obtained from:
+ http://eprint.iacr.org/2014/140
+
+ Thanks to Yuval Yarom and Naomi Benger for discovering this
+ flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
+
+ *Yuval Yarom and Naomi Benger*
+
+ * Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
+ this fixes a limitation in previous versions of OpenSSL.
+
+ *Steve Henson*
+
+ * Experimental encrypt-then-mac support.
+
+ Experimental support for encrypt then mac from
+ draft-gutmann-tls-encrypt-then-mac-02.txt
+
+ To enable it set the appropriate extension number (0x42 for the test
+ server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
+
+ For non-compliant peers (i.e. just about everything) this should have no
+ effect.
+
+ WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
+
+
+ *Steve Henson*
+
+ * Add EVP support for key wrapping algorithms, to avoid problems with
+ existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
+ the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
+ algorithms and include tests cases.
+
+ *Steve Henson*
+
+ * Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
+ enveloped data.
+
+ *Steve Henson*
+
+ * Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
+ MGF1 digest and OAEP label.
+
+ *Steve Henson*
+
+ * Make openssl verify return errors.
+
+ *Chris Palmer <palmer@google.com> and Ben Laurie*
+
+ * New function ASN1_TIME_diff to calculate the difference between two
+ ASN1_TIME structures or one structure and the current time.
+
+ *Steve Henson*
+
+ * Update fips_test_suite to support multiple command line options. New
+ test to induce all self test errors in sequence and check expected
+ failures.
+
+ *Steve Henson*
+
+ * Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
+ sign or verify all in one operation.
+
+ *Steve Henson*
+
+ * Add fips_algvs: a multicall fips utility incorporating all the algorithm
+ test programs and fips_test_suite. Includes functionality to parse
+ the minimal script output of fipsalgest.pl directly.
+
+ *Steve Henson*
+
+ * Add authorisation parameter to FIPS_module_mode_set().
+
+ *Steve Henson*
+
+ * Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
+
+ *Steve Henson*
+
+ * Use separate DRBG fields for internal and external flags. New function
+ FIPS_drbg_health_check() to perform on demand health checking. Add
+ generation tests to fips_test_suite with reduced health check interval to
+ demonstrate periodic health checking. Add "nodh" option to
+ fips_test_suite to skip very slow DH test.
+
+ *Steve Henson*
+
+ * New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
+ based on NID.
+
+ *Steve Henson*
+
+ * More extensive health check for DRBG checking many more failure modes.
+ New function FIPS_selftest_drbg_all() to handle every possible DRBG
+ combination: call this in fips_test_suite.
+
+ *Steve Henson*
+
+ * Add support for canonical generation of DSA parameter 'g'. See
+ FIPS 186-3 A.2.3.
+
+ * Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
+ POST to handle HMAC cases.
+
+ *Steve Henson*
+
+ * Add functions FIPS_module_version() and FIPS_module_version_text()
+ to return numerical and string versions of the FIPS module number.
+
+ *Steve Henson*
+
+ * Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
+ FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
+ outside the validated module in the FIPS capable OpenSSL.
+
+ *Steve Henson*
+
+ * Minor change to DRBG entropy callback semantics. In some cases
+ there is no multiple of the block length between min_len and
+ max_len. Allow the callback to return more than max_len bytes
+ of entropy but discard any extra: it is the callback's responsibility
+ to ensure that the extra data discarded does not impact the
+ requested amount of entropy.
+
+ *Steve Henson*
+
+ * Add PRNG security strength checks to RSA, DSA and ECDSA using
+ information in FIPS186-3, SP800-57 and SP800-131A.
+
+ *Steve Henson*
+
+ * CCM support via EVP. Interface is very similar to GCM case except we
+ must supply all data in one chunk (i.e. no update, final) and the
+ message length must be supplied if AAD is used. Add algorithm test
+ support.
+
+ *Steve Henson*
+
+ * Initial version of POST overhaul. Add POST callback to allow the status
+ of POST to be monitored and/or failures induced. Modify fips_test_suite
+ to use callback. Always run all selftests even if one fails.
+
+ *Steve Henson*
+
+ * XTS support including algorithm test driver in the fips_gcmtest program.
+ Note: this does increase the maximum key length from 32 to 64 bytes but
+ there should be no binary compatibility issues as existing applications
+ will never use XTS mode.
+
+ *Steve Henson*
+
+ * Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
+ to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
+ performs algorithm blocking for unapproved PRNG types. Also do not
+ set PRNG type in FIPS_mode_set(): leave this to the application.
+ Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
+ the standard OpenSSL PRNG: set additional data to a date time vector.
+
+ *Steve Henson*
+
+ * Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
+ This shouldn't present any incompatibility problems because applications
+ shouldn't be using these directly and any that are will need to rethink
+ anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
+
+ *Steve Henson*
+
+ * Extensive self tests and health checking required by SP800-90 DRBG.
+ Remove strength parameter from FIPS_drbg_instantiate and always
+ instantiate at maximum supported strength.
+
+ *Steve Henson*
+
+ * Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
+
+ *Steve Henson*
+
+ * New algorithm test program fips_dhvs to handle DH primitives only testing.
+
+ *Steve Henson*
+
+ * New function DH_compute_key_padded() to compute a DH key and pad with
+ leading zeroes if needed: this complies with SP800-56A et al.
+
+ *Steve Henson*
+
+ * Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
+ anything, incomplete, subject to change and largely untested at present.
+
+ *Steve Henson*
+
+ * Modify fipscanisteronly build option to only build the necessary object
+ files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
+
+ *Steve Henson*
+
+ * Add experimental option FIPSSYMS to give all symbols in
+ fipscanister.o and FIPS or fips prefix. This will avoid
+ conflicts with future versions of OpenSSL. Add perl script
+ util/fipsas.pl to preprocess assembly language source files
+ and rename any affected symbols.
+
+ *Steve Henson*
+
+ * Add selftest checks and algorithm block of non-fips algorithms in
+ FIPS mode. Remove DES2 from selftests.
+
+ *Steve Henson*
+
+ * Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
+ return internal method without any ENGINE dependencies. Add new
+ tiny fips sign and verify functions.
+
+ *Steve Henson*
+
+ * New build option no-ec2m to disable characteristic 2 code.
+
+ *Steve Henson*
+
+ * New build option "fipscanisteronly". This only builds fipscanister.o
+ and (currently) associated fips utilities. Uses the file Makefile.fips
+ instead of Makefile.org as the prototype.
+
+ *Steve Henson*
+
+ * Add some FIPS mode restrictions to GCM. Add internal IV generator.
+ Update fips_gcmtest to use IV generator.
+
+ *Steve Henson*
+
+ * Initial, experimental EVP support for AES-GCM. AAD can be input by
+ setting output buffer to NULL. The *Final function must be
+ called although it will not retrieve any additional data. The tag
+ can be set or retrieved with a ctrl. The IV length is by default 12
+ bytes (96 bits) but can be set to an alternative value. If the IV
+ length exceeds the maximum IV length (currently 16 bytes) it cannot be
+ set before the key.
+
+ *Steve Henson*
+
+ * New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
+ underlying do_cipher function handles all cipher semantics itself
+ including padding and finalisation. This is useful if (for example)
+ an ENGINE cipher handles block padding itself. The behaviour of
+ do_cipher is subtly changed if this flag is set: the return value
+ is the number of characters written to the output buffer (zero is
+ no longer an error code) or a negative error code. Also if the
+ input buffer is NULL and length 0 finalisation should be performed.
+
+ *Steve Henson*
+
+ * If a candidate issuer certificate is already part of the constructed
+ path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
+
+ *Steve Henson*
+
+ * Improve forward-security support: add functions
+
+ void SSL_CTX_set_not_resumable_session_callback(
+ SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
+ void SSL_set_not_resumable_session_callback(
+ SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
+
+ for use by SSL/TLS servers; the callback function will be called whenever a
+ new session is created, and gets to decide whether the session may be
+ cached to make it resumable (return 0) or not (return 1). (As by the
+ SSL/TLS protocol specifications, the session_id sent by the server will be
+ empty to indicate that the session is not resumable; also, the server will
+ not generate RFC 4507 (RFC 5077) session tickets.)
+
+ A simple reasonable callback implementation is to return is_forward_secure.
+ This parameter will be set to 1 or 0 depending on the ciphersuite selected
+ by the SSL/TLS server library, indicating whether it can provide forward
+ security.
+
+ *Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)*
+
+ * New -verify_name option in command line utilities to set verification
+ parameters by name.
+
+ *Steve Henson*
+
+ * Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
+ Add CMAC pkey methods.
+
+ *Steve Henson*
+
+ * Experimental renegotiation in s_server -www mode. If the client
+ browses /reneg connection is renegotiated. If /renegcert it is
+ renegotiated requesting a certificate.
+
+ *Steve Henson*
+
+ * Add an "external" session cache for debugging purposes to s_server. This
+ should help trace issues which normally are only apparent in deployed
+ multi-process servers.
+
+ *Steve Henson*
+
+ * Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
+ return value is ignored. NB. The functions RAND_add(), RAND_seed(),
+ BIO_set_cipher() and some obscure PEM functions were changed so they
+ can now return an error. The RAND changes required a change to the
+ RAND_METHOD structure.
+
+ *Steve Henson*
+
+ * New macro __owur for "OpenSSL Warn Unused Result". This makes use of
+ a gcc attribute to warn if the result of a function is ignored. This
+ is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
+ whose return value is often ignored.
+
+ *Steve Henson*
+
+ * New -noct, -requestct, -requirect and -ctlogfile options for s_client.
+ These allow SCTs (signed certificate timestamps) to be requested and
+ validated when establishing a connection.
+
+ *Rob Percival <robpercival@google.com>*
+
+### Changes between 1.0.2g and 1.0.2h [3 May 2016] ###
+
+ * Prevent padding oracle in AES-NI CBC MAC check
+
+ A MITM attacker can use a padding oracle attack to decrypt traffic
+ when the connection uses an AES CBC cipher and the server support
+ AES-NI.
+
+ This issue was introduced as part of the fix for Lucky 13 padding
+ attack (CVE-2013-0169). The padding check was rewritten to be in
+ constant time by making sure that always the same bytes are read and
+ compared against either the MAC or padding bytes. But it no longer
+ checked that there was enough data to have both the MAC and padding
+ bytes.
+
+ This issue was reported by Juraj Somorovsky using TLS-Attacker.
+ (CVE-2016-2107)
+
+ *Kurt Roeckx*
+
+ * Fix EVP_EncodeUpdate overflow
+
+ An overflow can occur in the EVP_EncodeUpdate() function which is used for
+ Base64 encoding of binary data. If an attacker is able to supply very large
+ amounts of input data then a length check can overflow resulting in a heap
+ corruption.
+
+ Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
+ the PEM_write_bio* family of functions. These are mainly used within the
+ OpenSSL command line applications, so any application which processes data
+ from an untrusted source and outputs it as a PEM file should be considered
+ vulnerable to this issue. User applications that call these APIs directly
+ with large amounts of untrusted data may also be vulnerable.
+
+ This issue was reported by Guido Vranken.
+ (CVE-2016-2105)
+
+ *Matt Caswell*
+
+ * Fix EVP_EncryptUpdate overflow
+
+ An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
+ is able to supply very large amounts of input data after a previous call to
+ EVP_EncryptUpdate() with a partial block then a length check can overflow
+ resulting in a heap corruption. Following an analysis of all OpenSSL
+ internal usage of the EVP_EncryptUpdate() function all usage is one of two
+ forms. The first form is where the EVP_EncryptUpdate() call is known to be
+ the first called function after an EVP_EncryptInit(), and therefore that
+ specific call must be safe. The second form is where the length passed to
+ EVP_EncryptUpdate() can be seen from the code to be some small value and
+ therefore there is no possibility of an overflow. Since all instances are
+ one of these two forms, it is believed that there can be no overflows in
+ internal code due to this problem. It should be noted that
+ EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
+ Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
+ of these calls have also been analysed too and it is believed there are no
+ instances in internal usage where an overflow could occur.
+
+ This issue was reported by Guido Vranken.
+ (CVE-2016-2106)
+
+ *Matt Caswell*
+
+ * Prevent ASN.1 BIO excessive memory allocation
+
+ When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
+ a short invalid encoding can cause allocation of large amounts of memory
+ potentially consuming excessive resources or exhausting memory.
+
+ Any application parsing untrusted data through d2i BIO functions is
+ affected. The memory based functions such as d2i_X509() are *not* affected.
+ Since the memory based functions are used by the TLS library, TLS
+ applications are not affected.
+
+ This issue was reported by Brian Carpenter.
+ (CVE-2016-2109)
+
+ *Stephen Henson*
+
+ * EBCDIC overread
+
+ ASN1 Strings that are over 1024 bytes can cause an overread in applications
+ using the X509_NAME_oneline() function on EBCDIC systems. This could result
+ in arbitrary stack data being returned in the buffer.
+
+ This issue was reported by Guido Vranken.
+ (CVE-2016-2176)
+
+ *Matt Caswell*
+
+ * Modify behavior of ALPN to invoke callback after SNI/servername
+ callback, such that updates to the SSL_CTX affect ALPN.
+
+ *Todd Short*
+
+ * Remove LOW from the DEFAULT cipher list. This removes singles DES from the
+ default.
+
+ *Kurt Roeckx*
+
+ * Only remove the SSLv2 methods with the no-ssl2-method option. When the
+ methods are enabled and ssl2 is disabled the methods return NULL.
+
+ *Kurt Roeckx*
+
+### Changes between 1.0.2f and 1.0.2g [1 Mar 2016] ###
+
+* Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
+ Builds that are not configured with "enable-weak-ssl-ciphers" will not
+ provide any "EXPORT" or "LOW" strength ciphers.
+
+ *Viktor Dukhovni*
+
+* Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
+ is by default disabled at build-time. Builds that are not configured with
+ "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
+ users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
+ will need to explicitly call either of:
+
+ SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
+ or
+ SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
+
+ as appropriate. Even if either of those is used, or the application
+ explicitly uses the version-specific SSLv2_method() or its client and
+ server variants, SSLv2 ciphers vulnerable to exhaustive search key
+ recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
+ ciphers, and SSLv2 56-bit DES are no longer available.
+ (CVE-2016-0800)
+
+ *Viktor Dukhovni*
+
+ * Fix a double-free in DSA code
+
+ A double free bug was discovered when OpenSSL parses malformed DSA private
+ keys and could lead to a DoS attack or memory corruption for applications
+ that receive DSA private keys from untrusted sources. This scenario is
+ considered rare.
+
+ This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
+ libFuzzer.
+ (CVE-2016-0705)
+
+ *Stephen Henson*
+
+ * Disable SRP fake user seed to address a server memory leak.
+
+ Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
+
+ SRP_VBASE_get_by_user had inconsistent memory management behaviour.
+ In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
+ was changed to ignore the "fake user" SRP seed, even if the seed
+ is configured.
+
+ Users should use SRP_VBASE_get1_by_user instead. Note that in
+ SRP_VBASE_get1_by_user, caller must free the returned value. Note
+ also that even though configuring the SRP seed attempts to hide
+ invalid usernames by continuing the handshake with fake
+ credentials, this behaviour is not constant time and no strong
+ guarantees are made that the handshake is indistinguishable from
+ that of a valid user.
+ (CVE-2016-0798)
+
+ *Emilia Käsper*
+
+ * Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
+
+ In the BN_hex2bn function the number of hex digits is calculated using an
+ int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
+ large values of |i| this can result in |bn_expand| not allocating any
+ memory because |i * 4| is negative. This can leave the internal BIGNUM data
+ field as NULL leading to a subsequent NULL ptr deref. For very large values
+ of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
+ In this case memory is allocated to the internal BIGNUM data field, but it
+ is insufficiently sized leading to heap corruption. A similar issue exists
+ in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
+ is ever called by user applications with very large untrusted hex/dec data.
+ This is anticipated to be a rare occurrence.
+
+ All OpenSSL internal usage of these functions use data that is not expected
+ to be untrusted, e.g. config file data or application command line
+ arguments. If user developed applications generate config file data based
+ on untrusted data then it is possible that this could also lead to security
+ consequences. This is also anticipated to be rare.
+
+ This issue was reported to OpenSSL by Guido Vranken.
+ (CVE-2016-0797)
+
+ *Matt Caswell*
+
+ * Fix memory issues in BIO_*printf functions
+
+ The internal |fmtstr| function used in processing a "%s" format string in
+ the BIO_*printf functions could overflow while calculating the length of a
+ string and cause an OOB read when printing very long strings.
+
+ Additionally the internal |doapr_outch| function can attempt to write to an
+ OOB memory location (at an offset from the NULL pointer) in the event of a
+ memory allocation failure. In 1.0.2 and below this could be caused where
+ the size of a buffer to be allocated is greater than INT_MAX. E.g. this
+ could be in processing a very long "%s" format string. Memory leaks can
+ also occur.
+
+ The first issue may mask the second issue dependent on compiler behaviour.
+ These problems could enable attacks where large amounts of untrusted data
+ is passed to the BIO_*printf functions. If applications use these functions
+ in this way then they could be vulnerable. OpenSSL itself uses these
+ functions when printing out human-readable dumps of ASN.1 data. Therefore
+ applications that print this data could be vulnerable if the data is from
+ untrusted sources. OpenSSL command line applications could also be
+ vulnerable where they print out ASN.1 data, or if untrusted data is passed
+ as command line arguments.
+
+ Libssl is not considered directly vulnerable. Additionally certificates etc
+ received via remote connections via libssl are also unlikely to be able to
+ trigger these issues because of message size limits enforced within libssl.
+
+ This issue was reported to OpenSSL Guido Vranken.
+ (CVE-2016-0799)
+
+ *Matt Caswell*
+
+ * Side channel attack on modular exponentiation
+
+ A side-channel attack was found which makes use of cache-bank conflicts on
+ the Intel Sandy-Bridge microarchitecture which could lead to the recovery
+ of RSA keys. The ability to exploit this issue is limited as it relies on
+ an attacker who has control of code in a thread running on the same
+ hyper-threaded core as the victim thread which is performing decryptions.
+
+ This issue was reported to OpenSSL by Yuval Yarom, The University of
+ Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
+ Nadia Heninger, University of Pennsylvania with more information at
+ http://cachebleed.info.
+ (CVE-2016-0702)
+
+ *Andy Polyakov*
+
+ * Change the req app to generate a 2048-bit RSA/DSA key by default,
+ if no keysize is specified with default_bits. This fixes an
+ omission in an earlier change that changed all RSA/DSA key generation
+ apps to use 2048 bits by default.
+
+ *Emilia Käsper*
+
+### Changes between 1.0.2e and 1.0.2f [28 Jan 2016] ###
+ * DH small subgroups
+
+ Historically OpenSSL only ever generated DH parameters based on "safe"
+ primes. More recently (in version 1.0.2) support was provided for
+ generating X9.42 style parameter files such as those required for RFC 5114
+ support. The primes used in such files may not be "safe". Where an
+ application is using DH configured with parameters based on primes that are
+ not "safe" then an attacker could use this fact to find a peer's private
+ DH exponent. This attack requires that the attacker complete multiple
+ handshakes in which the peer uses the same private DH exponent. For example
+ this could be used to discover a TLS server's private DH exponent if it's
+ reusing the private DH exponent or it's using a static DH ciphersuite.
+
+ OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
+ TLS. It is not on by default. If the option is not set then the server
+ reuses the same private DH exponent for the life of the server process and
+ would be vulnerable to this attack. It is believed that many popular
+ applications do set this option and would therefore not be at risk.
+
+ The fix for this issue adds an additional check where a "q" parameter is
+ available (as is the case in X9.42 based parameters). This detects the
+ only known attack, and is the only possible defense for static DH
+ ciphersuites. This could have some performance impact.
+
+ Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
+ default and cannot be disabled. This could have some performance impact.
+
+ This issue was reported to OpenSSL by Antonio Sanso (Adobe).
+ (CVE-2016-0701)
+
+ *Matt Caswell*
+
+ * SSLv2 doesn't block disabled ciphers
+
+ A malicious client can negotiate SSLv2 ciphers that have been disabled on
+ the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
+ been disabled, provided that the SSLv2 protocol was not also disabled via
+ SSL_OP_NO_SSLv2.
+
+ This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
+ and Sebastian Schinzel.
+ (CVE-2015-3197)
+
+ *Viktor Dukhovni*
+
+### Changes between 1.0.2d and 1.0.2e [3 Dec 2015] ###
+
+ * BN_mod_exp may produce incorrect results on x86_64
+
+ There is a carry propagating bug in the x86_64 Montgomery squaring
+ procedure. No EC algorithms are affected. Analysis suggests that attacks
+ against RSA and DSA as a result of this defect would be very difficult to
+ perform and are not believed likely. Attacks against DH are considered just
+ feasible (although very difficult) because most of the work necessary to
+ deduce information about a private key may be performed offline. The amount
+ of resources required for such an attack would be very significant and
+ likely only accessible to a limited number of attackers. An attacker would
+ additionally need online access to an unpatched system using the target
+ private key in a scenario with persistent DH parameters and a private
+ key that is shared between multiple clients. For example this can occur by
+ default in OpenSSL DHE based SSL/TLS ciphersuites.
+
+ This issue was reported to OpenSSL by Hanno Böck.
+ (CVE-2015-3193)
+
+ *Andy Polyakov*
+
+ * Certificate verify crash with missing PSS parameter
+
+ The signature verification routines will crash with a NULL pointer
+ dereference if presented with an ASN.1 signature using the RSA PSS
+ algorithm and absent mask generation function parameter. Since these
+ routines are used to verify certificate signature algorithms this can be
+ used to crash any certificate verification operation and exploited in a
+ DoS attack. Any application which performs certificate verification is
+ vulnerable including OpenSSL clients and servers which enable client
+ authentication.
+
+ This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
+ (CVE-2015-3194)
+
+ *Stephen Henson*
+
+ * X509_ATTRIBUTE memory leak
+
+ When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
+ memory. This structure is used by the PKCS#7 and CMS routines so any
+ application which reads PKCS#7 or CMS data from untrusted sources is
+ affected. SSL/TLS is not affected.
+
+ This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
+ libFuzzer.
+ (CVE-2015-3195)
+
+ *Stephen Henson*
+
+ * Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
+ This changes the decoding behaviour for some invalid messages,
+ though the change is mostly in the more lenient direction, and
+ legacy behaviour is preserved as much as possible.
+
+ *Emilia Käsper*
+
+ * In DSA_generate_parameters_ex, if the provided seed is too short,
+ return an error
+
+ *Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>*
+
+### Changes between 1.0.2c and 1.0.2d [9 Jul 2015] ###
+
+ * Alternate chains certificate forgery
+
+ During certificate verification, OpenSSL will attempt to find an
+ alternative certificate chain if the first attempt to build such a chain
+ fails. An error in the implementation of this logic can mean that an
+ attacker could cause certain checks on untrusted certificates to be
+ bypassed, such as the CA flag, enabling them to use a valid leaf
+ certificate to act as a CA and "issue" an invalid certificate.
+
+ This issue was reported to OpenSSL by Adam Langley/David Benjamin
+ (Google/BoringSSL).
+
+ *Matt Caswell*
+
+### Changes between 1.0.2b and 1.0.2c [12 Jun 2015] ###
+
+ * Fix HMAC ABI incompatibility. The previous version introduced an ABI
+ incompatibility in the handling of HMAC. The previous ABI has now been
+ restored.
+
+ *Matt Caswell*
+
+### Changes between 1.0.2a and 1.0.2b [11 Jun 2015] ###
+
+ * Malformed ECParameters causes infinite loop
+
+ When processing an ECParameters structure OpenSSL enters an infinite loop
+ if the curve specified is over a specially malformed binary polynomial
+ field.
+
+ This can be used to perform denial of service against any
+ system which processes public keys, certificate requests or
+ certificates. This includes TLS clients and TLS servers with
+ client authentication enabled.
+
+ This issue was reported to OpenSSL by Joseph Barr-Pixton.
+ (CVE-2015-1788)
+
+ *Andy Polyakov*
+
+ * Exploitable out-of-bounds read in X509_cmp_time
+
+ X509_cmp_time does not properly check the length of the ASN1_TIME
+ string and can read a few bytes out of bounds. In addition,
+ X509_cmp_time accepts an arbitrary number of fractional seconds in the
+ time string.
+
+ An attacker can use this to craft malformed certificates and CRLs of
+ various sizes and potentially cause a segmentation fault, resulting in
+ a DoS on applications that verify certificates or CRLs. TLS clients
+ that verify CRLs are affected. TLS clients and servers with client
+ authentication enabled may be affected if they use custom verification
+ callbacks.
+
+ This issue was reported to OpenSSL by Robert Swiecki (Google), and
+ independently by Hanno Böck.
+ (CVE-2015-1789)
+
+ *Emilia Käsper*
+
+ * PKCS7 crash with missing EnvelopedContent
+
+ The PKCS#7 parsing code does not handle missing inner EncryptedContent
+ correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
+ with missing content and trigger a NULL pointer dereference on parsing.
+
+ Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
+ structures from untrusted sources are affected. OpenSSL clients and
+ servers are not affected.
+
+ This issue was reported to OpenSSL by Michal Zalewski (Google).
+ (CVE-2015-1790)
+
+ *Emilia Käsper*
+
+ * CMS verify infinite loop with unknown hash function
+
+ When verifying a signedData message the CMS code can enter an infinite loop
+ if presented with an unknown hash function OID. This can be used to perform
+ denial of service against any system which verifies signedData messages using
+ the CMS code.
+ This issue was reported to OpenSSL by Johannes Bauer.
+ (CVE-2015-1792)
+
+ *Stephen Henson*
+
+ * Race condition handling NewSessionTicket
+
+ If a NewSessionTicket is received by a multi-threaded client when attempting to
+ reuse a previous ticket then a race condition can occur potentially leading to
+ a double free of the ticket data.
+ (CVE-2015-1791)
+
+ *Matt Caswell*
+
+ * Only support 256-bit or stronger elliptic curves with the
+ 'ecdh_auto' setting (server) or by default (client). Of supported
+ curves, prefer P-256 (both).
+
+ *Emilia Kasper*
+
+### Changes between 1.0.2 and 1.0.2a [19 Mar 2015] ###
+
+ * ClientHello sigalgs DoS fix
+
+ If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
+ invalid signature algorithms extension a NULL pointer dereference will
+ occur. This can be exploited in a DoS attack against the server.
+
+ This issue was was reported to OpenSSL by David Ramos of Stanford
+ University.
+ (CVE-2015-0291)
+
+ *Stephen Henson and Matt Caswell*
+
+ * Multiblock corrupted pointer fix
+
+ OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
+ feature only applies on 64 bit x86 architecture platforms that support AES
+ NI instructions. A defect in the implementation of "multiblock" can cause
+ OpenSSL's internal write buffer to become incorrectly set to NULL when
+ using non-blocking IO. Typically, when the user application is using a
+ socket BIO for writing, this will only result in a failed connection.
+ However if some other BIO is used then it is likely that a segmentation
+ fault will be triggered, thus enabling a potential DoS attack.
+
+ This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
+ (CVE-2015-0290)
+
+ *Matt Caswell*
+
+ * Segmentation fault in DTLSv1_listen fix
+
+ The DTLSv1_listen function is intended to be stateless and processes the
+ initial ClientHello from many peers. It is common for user code to loop
+ over the call to DTLSv1_listen until a valid ClientHello is received with
+ an associated cookie. A defect in the implementation of DTLSv1_listen means
+ that state is preserved in the SSL object from one invocation to the next
+ that can lead to a segmentation fault. Errors processing the initial
+ ClientHello can trigger this scenario. An example of such an error could be
+ that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
+ server.
+
+ This issue was reported to OpenSSL by Per Allansson.
+ (CVE-2015-0207)
+
+ *Matt Caswell*
+
+ * Segmentation fault in ASN1_TYPE_cmp fix
+
+ The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
+ made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
+ certificate signature algorithm consistency this can be used to crash any
+ certificate verification operation and exploited in a DoS attack. Any
+ application which performs certificate verification is vulnerable including
+ OpenSSL clients and servers which enable client authentication.
+ (CVE-2015-0286)
+
+ *Stephen Henson*
+
+ * Segmentation fault for invalid PSS parameters fix
+
+ The signature verification routines will crash with a NULL pointer
+ dereference if presented with an ASN.1 signature using the RSA PSS
+ algorithm and invalid parameters. Since these routines are used to verify
+ certificate signature algorithms this can be used to crash any
+ certificate verification operation and exploited in a DoS attack. Any
+ application which performs certificate verification is vulnerable including
+ OpenSSL clients and servers which enable client authentication.
+
+ This issue was was reported to OpenSSL by Brian Carpenter.
+ (CVE-2015-0208)
+
+ *Stephen Henson*
+
+ * ASN.1 structure reuse memory corruption fix
+
+ Reusing a structure in ASN.1 parsing may allow an attacker to cause
+ memory corruption via an invalid write. Such reuse is and has been
+ strongly discouraged and is believed to be rare.
+
+ Applications that parse structures containing CHOICE or ANY DEFINED BY
+ components may be affected. Certificate parsing (d2i_X509 and related
+ functions) are however not affected. OpenSSL clients and servers are
+ not affected.
+ (CVE-2015-0287)
+
+ *Stephen Henson*
+
+ * PKCS7 NULL pointer dereferences fix
+
+ The PKCS#7 parsing code does not handle missing outer ContentInfo
+ correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
+ missing content and trigger a NULL pointer dereference on parsing.
+
+ Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
+ otherwise parse PKCS#7 structures from untrusted sources are
+ affected. OpenSSL clients and servers are not affected.
+
+ This issue was reported to OpenSSL by Michal Zalewski (Google).
+ (CVE-2015-0289)
+
+ *Emilia Käsper*
+
+ * DoS via reachable assert in SSLv2 servers fix
+
+ A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
+ servers that both support SSLv2 and enable export cipher suites by sending
+ a specially crafted SSLv2 CLIENT-MASTER-KEY message.
+
+ This issue was discovered by Sean Burford (Google) and Emilia Käsper
+ (OpenSSL development team).
+ (CVE-2015-0293)
+
+ *Emilia Käsper*
+
+ * Empty CKE with client auth and DHE fix
+
+ If client auth is used then a server can seg fault in the event of a DHE
+ ciphersuite being selected and a zero length ClientKeyExchange message
+ being sent by the client. This could be exploited in a DoS attack.
+ (CVE-2015-1787)
+
+ *Matt Caswell*
+
+ * Handshake with unseeded PRNG fix
+
+ Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
+ with an unseeded PRNG. The conditions are:
+ - The client is on a platform where the PRNG has not been seeded
+ automatically, and the user has not seeded manually
+ - A protocol specific client method version has been used (i.e. not
+ SSL_client_methodv23)
+ - A ciphersuite is used that does not require additional random data from
+ the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
+
+ If the handshake succeeds then the client random that has been used will
+ have been generated from a PRNG with insufficient entropy and therefore the
+ output may be predictable.
+
+ For example using the following command with an unseeded openssl will
+ succeed on an unpatched platform:
+
+ openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
+ (CVE-2015-0285)
+
+ *Matt Caswell*
+
+ * Use After Free following d2i_ECPrivatekey error fix
+
+ A malformed EC private key file consumed via the d2i_ECPrivateKey function
+ could cause a use after free condition. This, in turn, could cause a double
+ free in several private key parsing functions (such as d2i_PrivateKey
+ or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
+ for applications that receive EC private keys from untrusted
+ sources. This scenario is considered rare.
+
+ This issue was discovered by the BoringSSL project and fixed in their
+ commit 517073cd4b.
+ (CVE-2015-0209)
+
+ *Matt Caswell*
+
+ * X509_to_X509_REQ NULL pointer deref fix
+
+ The function X509_to_X509_REQ will crash with a NULL pointer dereference if
+ the certificate key is invalid. This function is rarely used in practice.
+
+ This issue was discovered by Brian Carpenter.
+ (CVE-2015-0288)
+
+ *Stephen Henson*
+
+ * Removed the export ciphers from the DEFAULT ciphers
+
+ *Kurt Roeckx*
+
+### Changes between 1.0.1l and 1.0.2 [22 Jan 2015] ###
+
+ * Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
+ ARMv5 through ARMv8, as opposite to "locking" it to single one.
+ So far those who have to target multiple platforms would compromise
+ and argue that binary targeting say ARMv5 would still execute on
+ ARMv8. "Universal" build resolves this compromise by providing
+ near-optimal performance even on newer platforms.
+
+ *Andy Polyakov*
+
+ * Accelerated NIST P-256 elliptic curve implementation for x86_64
+ (other platforms pending).
+
+ *Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov*
+
+ * Add support for the SignedCertificateTimestampList certificate and
+ OCSP response extensions from RFC6962.
+
+ *Rob Stradling*
+
+ * Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
+ for corner cases. (Certain input points at infinity could lead to
+ bogus results, with non-infinity inputs mapped to infinity too.)
+
+ *Bodo Moeller*
+
+ * Initial support for PowerISA 2.0.7, first implemented in POWER8.
+ This covers AES, SHA256/512 and GHASH. "Initial" means that most
+ common cases are optimized and there still is room for further
+ improvements. Vector Permutation AES for Altivec is also added.
+
+ *Andy Polyakov*
+
+ * Add support for little-endian ppc64 Linux target.
+
+ *Marcelo Cerri (IBM)*
+
+ * Initial support for AMRv8 ISA crypto extensions. This covers AES,
+ SHA1, SHA256 and GHASH. "Initial" means that most common cases
+ are optimized and there still is room for further improvements.
+ Both 32- and 64-bit modes are supported.
+
+ *Andy Polyakov, Ard Biesheuvel (Linaro)*
+
+ * Improved ARMv7 NEON support.
+
+ *Andy Polyakov*
+
+ * Support for SPARC Architecture 2011 crypto extensions, first
+ implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
+ SHA256/512, MD5, GHASH and modular exponentiation.
+
+ *Andy Polyakov, David Miller*
+
+ * Accelerated modular exponentiation for Intel processors, a.k.a.
+ RSAZ.
+
+ *Shay Gueron & Vlad Krasnov (Intel Corp)*
+
+ * Support for new and upcoming Intel processors, including AVX2,
+ BMI and SHA ISA extensions. This includes additional "stitched"
+ implementations, AESNI-SHA256 and GCM, and multi-buffer support
+ for TLS encrypt.
+
+ This work was sponsored by Intel Corp.
+
+ *Andy Polyakov*
+
+ * Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
+ supports both DTLS 1.2 and 1.0 and should use whatever version the peer
+ supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
+
+ *Steve Henson*
+
+ * Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
+ this fixes a limitation in previous versions of OpenSSL.
+
+ *Steve Henson*
+
+ * Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
+ MGF1 digest and OAEP label.
+
+ *Steve Henson*
+
+ * Add EVP support for key wrapping algorithms, to avoid problems with
+ existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
+ the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
+ algorithms and include tests cases.
+
+ *Steve Henson*
+
+ * Add functions to allocate and set the fields of an ECDSA_METHOD
+ structure.
+
+ *Douglas E. Engert, Steve Henson*
+
+ * New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
+ difference in days and seconds between two tm or ASN1_TIME structures.
+
+ *Steve Henson*
+
+ * Add -rev test option to s_server to just reverse order of characters
+ received by client and send back to server. Also prints an abbreviated
+ summary of the connection parameters.
+
+ *Steve Henson*
+
+ * New option -brief for s_client and s_server to print out a brief summary
+ of connection parameters.
+
+ *Steve Henson*
+
+ * Add callbacks for arbitrary TLS extensions.
+
+ *Trevor Perrin <trevp@trevp.net> and Ben Laurie*
+
+ * New option -crl_download in several openssl utilities to download CRLs
+ from CRLDP extension in certificates.
+
+ *Steve Henson*
+
+ * New options -CRL and -CRLform for s_client and s_server for CRLs.
+
+ *Steve Henson*
+
+ * New function X509_CRL_diff to generate a delta CRL from the difference
+ of two full CRLs. Add support to "crl" utility.
+
+ *Steve Henson*
+
+ * New functions to set lookup_crls function and to retrieve
+ X509_STORE from X509_STORE_CTX.
+
+ *Steve Henson*
+
+ * Print out deprecated issuer and subject unique ID fields in
+ certificates.
+
+ *Steve Henson*
+
+ * Extend OCSP I/O functions so they can be used for simple general purpose
+ HTTP as well as OCSP. New wrapper function which can be used to download
+ CRLs using the OCSP API.
+
+ *Steve Henson*
+
+ * Delegate command line handling in s_client/s_server to SSL_CONF APIs.
+
+ *Steve Henson*
+
+ * SSL_CONF* functions. These provide a common framework for application
+ configuration using configuration files or command lines.
+
+ *Steve Henson*
+
+ * SSL/TLS tracing code. This parses out SSL/TLS records using the
+ message callback and prints the results. Needs compile time option
+ "enable-ssl-trace". New options to s_client and s_server to enable
+ tracing.
+
+ *Steve Henson*
+
+ * New ctrl and macro to retrieve supported points extensions.
+ Print out extension in s_server and s_client.
+
+ *Steve Henson*
+
+ * New functions to retrieve certificate signature and signature
+ OID NID.
+
+ *Steve Henson*
+
+ * Add functions to retrieve and manipulate the raw cipherlist sent by a
+ client to OpenSSL.
+
+ *Steve Henson*
+
+ * New Suite B modes for TLS code. These use and enforce the requirements
+ of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
+ only use Suite B curves. The Suite B modes can be set by using the
+ strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
+
+ *Steve Henson*
+
+ * New chain verification flags for Suite B levels of security. Check
+ algorithms are acceptable when flags are set in X509_verify_cert.
+
+ *Steve Henson*
+
+ * Make tls1_check_chain return a set of flags indicating checks passed
+ by a certificate chain. Add additional tests to handle client
+ certificates: checks for matching certificate type and issuer name
+ comparison.
+
+ *Steve Henson*
+
+ * If an attempt is made to use a signature algorithm not in the peer
+ preference list abort the handshake. If client has no suitable
+ signature algorithms in response to a certificate request do not
+ use the certificate.
+
+ *Steve Henson*
+
+ * If server EC tmp key is not in client preference list abort handshake.
+
+ *Steve Henson*
+
+ * Add support for certificate stores in CERT structure. This makes it
+ possible to have different stores per SSL structure or one store in
+ the parent SSL_CTX. Include distinct stores for certificate chain
+ verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
+ to build and store a certificate chain in CERT structure: returning
+ an error if the chain cannot be built: this will allow applications
+ to test if a chain is correctly configured.
+
+ Note: if the CERT based stores are not set then the parent SSL_CTX
+ store is used to retain compatibility with existing behaviour.
+
+
+ *Steve Henson*
+
+ * New function ssl_set_client_disabled to set a ciphersuite disabled
+ mask based on the current session, check mask when sending client
+ hello and checking the requested ciphersuite.
+
+ *Steve Henson*
+
+ * New ctrls to retrieve and set certificate types in a certificate
+ request message. Print out received values in s_client. If certificate
+ types is not set with custom values set sensible values based on
+ supported signature algorithms.
+
+ *Steve Henson*
+
+ * Support for distinct client and server supported signature algorithms.
+
+ *Steve Henson*
+
+ * Add certificate callback. If set this is called whenever a certificate
+ is required by client or server. An application can decide which
+ certificate chain to present based on arbitrary criteria: for example
+ supported signature algorithms. Add very simple example to s_server.
+ This fixes many of the problems and restrictions of the existing client
+ certificate callback: for example you can now clear an existing
+ certificate and specify the whole chain.
+
+ *Steve Henson*
+
+ * Add new "valid_flags" field to CERT_PKEY structure which determines what
+ the certificate can be used for (if anything). Set valid_flags field
+ in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
+ to have similar checks in it.
+
+ Add new "cert_flags" field to CERT structure and include a "strict mode".
+ This enforces some TLS certificate requirements (such as only permitting
+ certificate signature algorithms contained in the supported algorithms
+ extension) which some implementations ignore: this option should be used
+ with caution as it could cause interoperability issues.
+
+ *Steve Henson*
+
+ * Update and tidy signature algorithm extension processing. Work out
+ shared signature algorithms based on preferences and peer algorithms
+ and print them out in s_client and s_server. Abort handshake if no
+ shared signature algorithms.
+
+ *Steve Henson*
+
+ * Add new functions to allow customised supported signature algorithms
+ for SSL and SSL_CTX structures. Add options to s_client and s_server
+ to support them.
+
+ *Steve Henson*
+
+ * New function SSL_certs_clear() to delete all references to certificates
+ from an SSL structure. Before this once a certificate had been added
+ it couldn't be removed.
+
+ *Steve Henson*
+
+ * Integrate hostname, email address and IP address checking with certificate
+ verification. New verify options supporting checking in openssl utility.
+
+ *Steve Henson*
+
+ * Fixes and wildcard matching support to hostname and email checking
+ functions. Add manual page.
+
+ *Florian Weimer (Red Hat Product Security Team)*
+
+ * New functions to check a hostname email or IP address against a
+ certificate. Add options x509 utility to print results of checks against
+ a certificate.
+
+ *Steve Henson*
+
+ * Fix OCSP checking.
+
+ *Rob Stradling <rob.stradling@comodo.com> and Ben Laurie*
+
+ * Initial experimental support for explicitly trusted non-root CAs.
+ OpenSSL still tries to build a complete chain to a root but if an
+ intermediate CA has a trust setting included that is used. The first
+ setting is used: whether to trust (e.g., -addtrust option to the x509
+ utility) or reject.
+
+ *Steve Henson*
+
+ * Add -trusted_first option which attempts to find certificates in the
+ trusted store even if an untrusted chain is also supplied.
+
+ *Steve Henson*
+
+ * MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
+ platform support for Linux and Android.
+
+ *Andy Polyakov*
+
+ * Support for linux-x32, ILP32 environment in x86_64 framework.
+
+ *Andy Polyakov*
+
+ * Experimental multi-implementation support for FIPS capable OpenSSL.
+ When in FIPS mode the approved implementations are used as normal,
+ when not in FIPS mode the internal unapproved versions are used instead.
+ This means that the FIPS capable OpenSSL isn't forced to use the
+ (often lower performance) FIPS implementations outside FIPS mode.
+
+ *Steve Henson*
+
+ * Transparently support X9.42 DH parameters when calling
+ PEM_read_bio_DHparameters. This means existing applications can handle
+ the new parameter format automatically.
+
+ *Steve Henson*
+
+ * Initial experimental support for X9.42 DH parameter format: mainly
+ to support use of 'q' parameter for RFC5114 parameters.
+
+ *Steve Henson*
+
+ * Add DH parameters from RFC5114 including test data to dhtest.
+
+ *Steve Henson*
+
+ * Support for automatic EC temporary key parameter selection. If enabled
+ the most preferred EC parameters are automatically used instead of
+ hardcoded fixed parameters. Now a server just has to call:
+ SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
+ support ECDH and use the most appropriate parameters.
+
+ *Steve Henson*
+
+ * Enhance and tidy EC curve and point format TLS extension code. Use
+ static structures instead of allocation if default values are used.
+ New ctrls to set curves we wish to support and to retrieve shared curves.
+ Print out shared curves in s_server. New options to s_server and s_client
+ to set list of supported curves.
+
+ *Steve Henson*
+
+ * New ctrls to retrieve supported signature algorithms and
+ supported curve values as an array of NIDs. Extend openssl utility
+ to print out received values.
+
+ *Steve Henson*
+
+ * Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
+ between NIDs and the more common NIST names such as "P-256". Enhance
+ ecparam utility and ECC method to recognise the NIST names for curves.
+
+ *Steve Henson*
+
+ * Enhance SSL/TLS certificate chain handling to support different
+ chains for each certificate instead of one chain in the parent SSL_CTX.
+
+ *Steve Henson*
+
+ * Support for fixed DH ciphersuite client authentication: where both
+ server and client use DH certificates with common parameters.
+
+ *Steve Henson*
+
+ * Support for fixed DH ciphersuites: those requiring DH server
+ certificates.
+
+ *Steve Henson*
+
+ * New function i2d_re_X509_tbs for re-encoding the TBS portion of
+ the certificate.
+ Note: Related 1.0.2-beta specific macros X509_get_cert_info,
+ X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
+ X509_CINF_get_signature were reverted post internal team review.
+
+### Changes between 1.0.1k and 1.0.1l [15 Jan 2015] ###
+
+ * Build fixes for the Windows and OpenVMS platforms
+
+ *Matt Caswell and Richard Levitte*
+
+### Changes between 1.0.1j and 1.0.1k [8 Jan 2015] ###
+
+ * Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
+ message can cause a segmentation fault in OpenSSL due to a NULL pointer
+ dereference. This could lead to a Denial Of Service attack. Thanks to
+ Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
+ (CVE-2014-3571)
+
+ *Steve Henson*
+
+ * Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
+ dtls1_buffer_record function under certain conditions. In particular this
+ could occur if an attacker sent repeated DTLS records with the same
+ sequence number but for the next epoch. The memory leak could be exploited
+ by an attacker in a Denial of Service attack through memory exhaustion.
+ Thanks to Chris Mueller for reporting this issue.
+ (CVE-2015-0206)
+
+ *Matt Caswell*
+
+ * Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
+ built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
+ method would be set to NULL which could later result in a NULL pointer
+ dereference. Thanks to Frank Schmirler for reporting this issue.
+ (CVE-2014-3569)
+
+ *Kurt Roeckx*
+
+ * Abort handshake if server key exchange message is omitted for ephemeral
+ ECDH ciphersuites.
+
+ Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
+ reporting this issue.
+ (CVE-2014-3572)
+
+ *Steve Henson*
+
+ * Remove non-export ephemeral RSA code on client and server. This code
+ violated the TLS standard by allowing the use of temporary RSA keys in
+ non-export ciphersuites and could be used by a server to effectively
+ downgrade the RSA key length used to a value smaller than the server
+ certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
+ INRIA or reporting this issue.
+ (CVE-2015-0204)
+
+ *Steve Henson*
+
+ * Fixed issue where DH client certificates are accepted without verification.
+ An OpenSSL server will accept a DH certificate for client authentication
+ without the certificate verify message. This effectively allows a client to
+ authenticate without the use of a private key. This only affects servers
+ which trust a client certificate authority which issues certificates
+ containing DH keys: these are extremely rare and hardly ever encountered.
+ Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
+ this issue.
+ (CVE-2015-0205)
+
+ *Steve Henson*
+
+ * Ensure that the session ID context of an SSL is updated when its
+ SSL_CTX is updated via SSL_set_SSL_CTX.
+
+ The session ID context is typically set from the parent SSL_CTX,
+ and can vary with the CTX.
+
+ *Adam Langley*
+
+ * Fix various certificate fingerprint issues.
+
+ By using non-DER or invalid encodings outside the signed portion of a
+ certificate the fingerprint can be changed without breaking the signature.
+ Although no details of the signed portion of the certificate can be changed
+ this can cause problems with some applications: e.g. those using the
+ certificate fingerprint for blacklists.
+
+ 1. Reject signatures with non zero unused bits.
+
+ If the BIT STRING containing the signature has non zero unused bits reject
+ the signature. All current signature algorithms require zero unused bits.
+
+ 2. Check certificate algorithm consistency.
+
+ Check the AlgorithmIdentifier inside TBS matches the one in the
+ certificate signature. NB: this will result in signature failure
+ errors for some broken certificates.
+
+ Thanks to Konrad Kraszewski from Google for reporting this issue.
+
+ 3. Check DSA/ECDSA signatures use DER.
+
+ Re-encode DSA/ECDSA signatures and compare with the original received
+ signature. Return an error if there is a mismatch.
+
+ This will reject various cases including garbage after signature
+ (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
+ program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
+ (negative or with leading zeroes).
+
+ Further analysis was conducted and fixes were developed by Stephen Henson
+ of the OpenSSL core team.
+
+ (CVE-2014-8275)
+
+ *Steve Henson*
+
+ *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
+ results on some platforms, including x86_64. This bug occurs at random
+ with a very low probability, and is not known to be exploitable in any
+ way, though its exact impact is difficult to determine. Thanks to Pieter
+ Wuille (Blockstream) who reported this issue and also suggested an initial
+ fix. Further analysis was conducted by the OpenSSL development team and
+ Adam Langley of Google. The final fix was developed by Andy Polyakov of
+ the OpenSSL core team.
+ (CVE-2014-3570)
+
+ *Andy Polyakov*
+
+ *) Do not resume sessions on the server if the negotiated protocol
+ version does not match the session's version. Resuming with a different
+ version, while not strictly forbidden by the RFC, is of questionable
+ sanity and breaks all known clients.
+
+ *David Benjamin, Emilia Käsper*
+
+ *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
+ early CCS messages during renegotiation. (Note that because
+ renegotiation is encrypted, this early CCS was not exploitable.)
+
+ *Emilia Käsper*
+
+ *) Tighten client-side session ticket handling during renegotiation:
+ ensure that the client only accepts a session ticket if the server sends
+ the extension anew in the ServerHello. Previously, a TLS client would
+ reuse the old extension state and thus accept a session ticket if one was
+ announced in the initial ServerHello.
+
+ Similarly, ensure that the client requires a session ticket if one
+ was advertised in the ServerHello. Previously, a TLS client would
+ ignore a missing NewSessionTicket message.
+
+ *Emilia Käsper*
+
+### Changes between 1.0.1i and 1.0.1j [15 Oct 2014] ###
+
+ * SRTP Memory Leak.
+
+ A flaw in the DTLS SRTP extension parsing code allows an attacker, who
+ sends a carefully crafted handshake message, to cause OpenSSL to fail
+ to free up to 64k of memory causing a memory leak. This could be
+ exploited in a Denial Of Service attack. This issue affects OpenSSL
+ 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
+ whether SRTP is used or configured. Implementations of OpenSSL that
+ have been compiled with OPENSSL_NO_SRTP defined are not affected.
+
+ The fix was developed by the OpenSSL team.
+ (CVE-2014-3513)
+
+ *OpenSSL team*
+
+ * Session Ticket Memory Leak.
+
+ When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
+ integrity of that ticket is first verified. In the event of a session
+ ticket integrity check failing, OpenSSL will fail to free memory
+ causing a memory leak. By sending a large number of invalid session
+ tickets an attacker could exploit this issue in a Denial Of Service
+ attack.
+ (CVE-2014-3567)
+
+ *Steve Henson*
+
+ * Build option no-ssl3 is incomplete.
+
+ When OpenSSL is configured with "no-ssl3" as a build option, servers
+ could accept and complete a SSL 3.0 handshake, and clients could be
+ configured to send them.
+ (CVE-2014-3568)
+
+ *Akamai and the OpenSSL team*
+
+ * Add support for TLS_FALLBACK_SCSV.
+ Client applications doing fallback retries should call
+ SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
+ (CVE-2014-3566)
+
+ *Adam Langley, Bodo Moeller*
+
+ * Add additional DigestInfo checks.
+
+ Re-encode DigestInto in DER and check against the original when
+ verifying RSA signature: this will reject any improperly encoded
+ DigestInfo structures.
+
+ Note: this is a precautionary measure and no attacks are currently known.
+
+
+ *Steve Henson*
+
+### Changes between 1.0.1h and 1.0.1i [6 Aug 2014] ###
+
+ * Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
+ SRP code can be overrun an internal buffer. Add sanity check that
+ g, A, B < N to SRP code.
+
+ Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
+ Group for discovering this issue.
+ (CVE-2014-3512)
+
+ *Steve Henson*
+
+ * A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
+ TLS 1.0 instead of higher protocol versions when the ClientHello message
+ is badly fragmented. This allows a man-in-the-middle attacker to force a
+ downgrade to TLS 1.0 even if both the server and the client support a
+ higher protocol version, by modifying the client's TLS records.
+
+ Thanks to David Benjamin and Adam Langley (Google) for discovering and
+ researching this issue.
+ (CVE-2014-3511)
+
+ *David Benjamin*
+
+ * OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
+ to a denial of service attack. A malicious server can crash the client
+ with a null pointer dereference (read) by specifying an anonymous (EC)DH
+ ciphersuite and sending carefully crafted handshake messages.
+
+ Thanks to Felix Gröbert (Google) for discovering and researching this
+ issue.
+ (CVE-2014-3510)
+
+ *Emilia Käsper*
+
+ * By sending carefully crafted DTLS packets an attacker could cause openssl
+ to leak memory. This can be exploited through a Denial of Service attack.
+ Thanks to Adam Langley for discovering and researching this issue.
+ (CVE-2014-3507)
+
+ *Adam Langley*
+
+ * An attacker can force openssl to consume large amounts of memory whilst
+ processing DTLS handshake messages. This can be exploited through a
+ Denial of Service attack.
+ Thanks to Adam Langley for discovering and researching this issue.
+ (CVE-2014-3506)
+
+ *Adam Langley*
+
+ * An attacker can force an error condition which causes openssl to crash
+ whilst processing DTLS packets due to memory being freed twice. This
+ can be exploited through a Denial of Service attack.
+ Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
+ this issue.
+ (CVE-2014-3505)
+
+ *Adam Langley*
+
+ * If a multithreaded client connects to a malicious server using a resumed
+ session and the server sends an ec point format extension it could write
+ up to 255 bytes to freed memory.
+
+ Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
+ issue.
+ (CVE-2014-3509)
+
+ *Gabor Tyukasz*
+
+ * A malicious server can crash an OpenSSL client with a null pointer
+ dereference (read) by specifying an SRP ciphersuite even though it was not
+ properly negotiated with the client. This can be exploited through a
+ Denial of Service attack.
+
+ Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
+ discovering and researching this issue.
+ (CVE-2014-5139)
+
+ *Steve Henson*
+
+ * A flaw in OBJ_obj2txt may cause pretty printing functions such as
+ X509_name_oneline, X509_name_print_ex et al. to leak some information
+ from the stack. Applications may be affected if they echo pretty printing
+ output to the attacker.
+
+ Thanks to Ivan Fratric (Google) for discovering this issue.
+ (CVE-2014-3508)
+
+ *Emilia Käsper, and Steve Henson*
+
+ * Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
+ for corner cases. (Certain input points at infinity could lead to
+ bogus results, with non-infinity inputs mapped to infinity too.)
+
+ *Bodo Moeller*
+
+### Changes between 1.0.1g and 1.0.1h [5 Jun 2014] ###
+
+ * Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
+ handshake can force the use of weak keying material in OpenSSL
+ SSL/TLS clients and servers.
+
+ Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
+ researching this issue. (CVE-2014-0224)
+
+ *KIKUCHI Masashi, Steve Henson*
+
+ * Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
+ OpenSSL DTLS client the code can be made to recurse eventually crashing
+ in a DoS attack.
+
+ Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
+ (CVE-2014-0221)
+
+ *Imre Rad, Steve Henson*
+
+ * Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
+ be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
+ client or server. This is potentially exploitable to run arbitrary
+ code on a vulnerable client or server.
+
+ Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
+
+ *Jüri Aedla, Steve Henson*
+
+ * Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
+ are subject to a denial of service attack.
+
+ Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
+ this issue. (CVE-2014-3470)
+
+ *Felix Gröbert, Ivan Fratric, Steve Henson*
+
+ * Harmonize version and its documentation. -f flag is used to display
+ compilation flags.
+
+ *mancha <mancha1@zoho.com>*
+
+ * Fix eckey_priv_encode so it immediately returns an error upon a failure
+ in i2d_ECPrivateKey.
+
+ *mancha <mancha1@zoho.com>*
+
+ * Fix some double frees. These are not thought to be exploitable.
+
+ *mancha <mancha1@zoho.com>*
+
+### Changes between 1.0.1f and 1.0.1g [7 Apr 2014] ###
+
+ * A missing bounds check in the handling of the TLS heartbeat extension
+ can be used to reveal up to 64k of memory to a connected client or
+ server.
+
+ Thanks for Neel Mehta of Google Security for discovering this bug and to
+ Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
+ preparing the fix (CVE-2014-0160)
+
+ *Adam Langley, Bodo Moeller*
+
+ * Fix for the attack described in the paper "Recovering OpenSSL
+ ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
+ by Yuval Yarom and Naomi Benger. Details can be obtained from:
+ http://eprint.iacr.org/2014/140
+
+ Thanks to Yuval Yarom and Naomi Benger for discovering this
+ flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
+
+ *Yuval Yarom and Naomi Benger*
+
+ * TLS pad extension: draft-agl-tls-padding-03
+
+ Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
+ TLS client Hello record length value would otherwise be > 255 and
+ less that 512 pad with a dummy extension containing zeroes so it
+ is at least 512 bytes long.
+
+
+ *Adam Langley, Steve Henson*
+
+### Changes between 1.0.1e and 1.0.1f [6 Jan 2014] ###
+
+ * Fix for TLS record tampering bug. A carefully crafted invalid
+ handshake could crash OpenSSL with a NULL pointer exception.
+ Thanks to Anton Johansson for reporting this issues.
+ (CVE-2013-4353)
+
+ * Keep original DTLS digest and encryption contexts in retransmission
+ structures so we can use the previous session parameters if they need
+ to be resent. (CVE-2013-6450)
+
+ *Steve Henson*
+
+ * Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
+ avoids preferring ECDHE-ECDSA ciphers when the client appears to be
+ Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
+ several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
+ is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
+ 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
+
+ *Rob Stradling, Adam Langley*
+
+### Changes between 1.0.1d and 1.0.1e [11 Feb 2013] ###
+
+ * Correct fix for CVE-2013-0169. The original didn't work on AES-NI
+ supporting platforms or when small records were transferred.
+
+ *Andy Polyakov, Steve Henson*
+
+### Changes between 1.0.1c and 1.0.1d [5 Feb 2013] ###
+
+ * Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
+
+ This addresses the flaw in CBC record processing discovered by
+ Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
+ at: http://www.isg.rhul.ac.uk/tls/
+
+ Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
+ Security Group at Royal Holloway, University of London
+ (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
+ Emilia Käsper for the initial patch.
+ (CVE-2013-0169)
+
+ *Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson*
+
+ * Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
+ ciphersuites which can be exploited in a denial of service attack.
+ Thanks go to and to Adam Langley <agl@chromium.org> for discovering
+ and detecting this bug and to Wolfgang Ettlinger
+ <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
+ (CVE-2012-2686)
+
+ *Adam Langley*
+
+ * Return an error when checking OCSP signatures when key is NULL.
+ This fixes a DoS attack. (CVE-2013-0166)
+
+ *Steve Henson*
+
+ * Make openssl verify return errors.
+
+ *Chris Palmer <palmer@google.com> and Ben Laurie*
+
+ * Call OCSP Stapling callback after ciphersuite has been chosen, so
+ the right response is stapled. Also change SSL_get_certificate()
+ so it returns the certificate actually sent.
+ See http://rt.openssl.org/Ticket/Display.html?id=2836.
+
+ *Rob Stradling <rob.stradling@comodo.com>*
+
+ * Fix possible deadlock when decoding public keys.
+
+ *Steve Henson*
+
+ * Don't use TLS 1.0 record version number in initial client hello
+ if renegotiating.
+
+ *Steve Henson*
+
+### Changes between 1.0.1b and 1.0.1c [10 May 2012] ###
+
+ * Sanity check record length before skipping explicit IV in TLS
+ 1.2, 1.1 and DTLS to fix DoS attack.
+
+ Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
+ fuzzing as a service testing platform.
+ (CVE-2012-2333)
+
+ *Steve Henson*
+
+ * Initialise tkeylen properly when encrypting CMS messages.
+ Thanks to Solar Designer of Openwall for reporting this issue.
+
+ *Steve Henson*
+
+ * In FIPS mode don't try to use composite ciphers as they are not
+ approved.
+
+ *Steve Henson*
+
+### Changes between 1.0.1a and 1.0.1b [26 Apr 2012] ###
+
+ * OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
+ 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
+ mean any application compiled against OpenSSL 1.0.0 headers setting
+ SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
+ TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
+ 0x10000000L Any application which was previously compiled against
+ OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
+ will need to be recompiled as a result. Letting be results in
+ inability to disable specifically TLS 1.1 and in client context,
+ in unlike event, limit maximum offered version to TLS 1.0 [see below].
+
+ *Steve Henson*
+
+ * In order to ensure interoperability SSL_OP_NO_protocolX does not
+ disable just protocol X, but all protocols above X *if* there are
+ protocols *below* X still enabled. In more practical terms it means
+ that if application wants to disable TLS1.0 in favor of TLS1.1 and
+ above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
+ SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
+ client side.
+
+ *Andy Polyakov*
+
+### Changes between 1.0.1 and 1.0.1a [19 Apr 2012] ###
+
+ * Check for potentially exploitable overflows in asn1_d2i_read_bio
+ BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
+ in CRYPTO_realloc_clean.
+
+ Thanks to Tavis Ormandy, Google Security Team, for discovering this
+ issue and to Adam Langley <agl@chromium.org> for fixing it.
+ (CVE-2012-2110)
+
+ *Adam Langley (Google), Tavis Ormandy, Google Security Team*
+
+ * Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
+
+ *Adam Langley*
+
+ * Workarounds for some broken servers that "hang" if a client hello
+ record length exceeds 255 bytes.
+
+ 1. Do not use record version number > TLS 1.0 in initial client
+ hello: some (but not all) hanging servers will now work.
+ 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
+ the number of ciphers sent in the client hello. This should be
+ set to an even number, such as 50, for example by passing:
+ -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
+ Most broken servers should now work.
+ 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
+ TLS 1.2 client support entirely.
+
+ *Steve Henson*
+
+ * Fix SEGV in Vector Permutation AES module observed in OpenSSH.
+
+ *Andy Polyakov*
+
+### Changes between 1.0.0h and 1.0.1 [14 Mar 2012] ###
+
+ * Add compatibility with old MDC2 signatures which use an ASN1 OCTET
+ STRING form instead of a DigestInfo.
+
+ *Steve Henson*
+
+ * The format used for MDC2 RSA signatures is inconsistent between EVP
+ and the RSA_sign/RSA_verify functions. This was made more apparent when
+ OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
+ those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
+ the correct format in RSA_verify so both forms transparently work.
+
+ *Steve Henson*
+
+ * Some servers which support TLS 1.0 can choke if we initially indicate
+ support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
+ encrypted premaster secret. As a workaround use the maximum permitted
+ client version in client hello, this should keep such servers happy
+ and still work with previous versions of OpenSSL.
+
+ *Steve Henson*
+
+ * Add support for TLS/DTLS heartbeats.
+
+ *Robin Seggelmann <seggelmann@fh-muenster.de>*
+
+ * Add support for SCTP.
+
+ *Robin Seggelmann <seggelmann@fh-muenster.de>*
+
+ * Improved PRNG seeding for VOS.
+
+ *Paul Green <Paul.Green@stratus.com>*
+
+ * Extensive assembler packs updates, most notably:
+
+ - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
+ - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
+ - x86_64: bit-sliced AES implementation;
+ - ARM: NEON support, contemporary platforms optimizations;
+ - s390x: z196 support;
+ - *: GHASH and GF(2^m) multiplication implementations;
+
+ *Andy Polyakov*
+
+ * Make TLS-SRP code conformant with RFC 5054 API cleanup
+ (removal of unnecessary code)
+
+ *Peter Sylvester <peter.sylvester@edelweb.fr>*
+
+ * Add TLS key material exporter from RFC 5705.
+
+ *Eric Rescorla*
+
+ * Add DTLS-SRTP negotiation from RFC 5764.
+
+ *Eric Rescorla*
+
+ * Add Next Protocol Negotiation,
+ http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
+ disabled with a no-npn flag to config or Configure. Code donated
+ by Google.
+
+ *Adam Langley <agl@google.com> and Ben Laurie*
+
+ * Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
+ NIST-P256, NIST-P521, with constant-time single point multiplication on
+ typical inputs. Compiler support for the nonstandard type __uint128_t is
+ required to use this (present in gcc 4.4 and later, for 64-bit builds).
+ Code made available under Apache License version 2.0.
+
+ Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
+ line to include this in your build of OpenSSL, and run "make depend" (or
+ "make update"). This enables the following EC_METHODs:
+
+ EC_GFp_nistp224_method()
+ EC_GFp_nistp256_method()
+ EC_GFp_nistp521_method()
+
+ EC_GROUP_new_by_curve_name() will automatically use these (while
+ EC_GROUP_new_curve_GFp() currently prefers the more flexible
+ implementations).
+
+ *Emilia Käsper, Adam Langley, Bodo Moeller (Google)*
+
+ * Use type ossl_ssize_t instad of ssize_t which isn't available on
+ all platforms. Move ssize_t definition from e_os.h to the public
+ header file e_os2.h as it now appears in public header file cms.h
+
+ *Steve Henson*
+
+ * New -sigopt option to the ca, req and x509 utilities. Additional
+ signature parameters can be passed using this option and in
+ particular PSS.
+
+ *Steve Henson*
+
+ * Add RSA PSS signing function. This will generate and set the
+ appropriate AlgorithmIdentifiers for PSS based on those in the
+ corresponding EVP_MD_CTX structure. No application support yet.
+
+ *Steve Henson*
+
+ * Support for companion algorithm specific ASN1 signing routines.
+ New function ASN1_item_sign_ctx() signs a pre-initialised
+ EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
+ the appropriate parameters.
+
+ *Steve Henson*
+
+ * Add new algorithm specific ASN1 verification initialisation function
+ to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
+ handling will be the same no matter what EVP_PKEY_METHOD is used.
+ Add a PSS handler to support verification of PSS signatures: checked
+ against a number of sample certificates.
+
+ *Steve Henson*
+
+ * Add signature printing for PSS. Add PSS OIDs.
+
+ *Steve Henson, Martin Kaiser <lists@kaiser.cx>*
+
+ * Add algorithm specific signature printing. An individual ASN1 method
+ can now print out signatures instead of the standard hex dump.
+
+ More complex signatures (e.g. PSS) can print out more meaningful
+ information. Include DSA version that prints out the signature
+ parameters r, s.
+
+ *Steve Henson*
+
+ * Password based recipient info support for CMS library: implementing
+ RFC3211.
+
+ *Steve Henson*
+
+ * Split password based encryption into PBES2 and PBKDF2 functions. This
+ neatly separates the code into cipher and PBE sections and is required
+ for some algorithms that split PBES2 into separate pieces (such as
+ password based CMS).
+
+ *Steve Henson*
+
+ * Session-handling fixes:
+ - Fix handling of connections that are resuming with a session ID,
+ but also support Session Tickets.
+ - Fix a bug that suppressed issuing of a new ticket if the client
+ presented a ticket with an expired session.
+ - Try to set the ticket lifetime hint to something reasonable.
+ - Make tickets shorter by excluding irrelevant information.
+ - On the client side, don't ignore renewed tickets.
+
+ *Adam Langley, Bodo Moeller (Google)*
+
+ * Fix PSK session representation.
+
+ *Bodo Moeller*
+
+ * Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
+
+ This work was sponsored by Intel.
+
+ *Andy Polyakov*
+
+ * Add GCM support to TLS library. Some custom code is needed to split
+ the IV between the fixed (from PRF) and explicit (from TLS record)
+ portions. This adds all GCM ciphersuites supported by RFC5288 and
+ RFC5289. Generalise some AES* cipherstrings to include GCM and
+ add a special AESGCM string for GCM only.
+
+ *Steve Henson*
+
+ * Expand range of ctrls for AES GCM. Permit setting invocation
+ field on decrypt and retrieval of invocation field only on encrypt.
+
+ *Steve Henson*
+
+ * Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
+ As required by RFC5289 these ciphersuites cannot be used if for
+ versions of TLS earlier than 1.2.
+
+ *Steve Henson*
+
+ * For FIPS capable OpenSSL interpret a NULL default public key method
+ as unset and return the appropriate default but do *not* set the default.
+ This means we can return the appropriate method in applications that
+ switch between FIPS and non-FIPS modes.
+
+ *Steve Henson*
+
+ * Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
+ ENGINE is used then we cannot handle that in the FIPS module so we
+ keep original code iff non-FIPS operations are allowed.
+
+ *Steve Henson*
+
+ * Add -attime option to openssl utilities.
+
+ *Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson*
+
+ * Redirect DSA and DH operations to FIPS module in FIPS mode.
+
+ *Steve Henson*
+
+ * Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
+ FIPS EC methods unconditionally for now.
+
+ *Steve Henson*
+
+ * New build option no-ec2m to disable characteristic 2 code.
+
+ *Steve Henson*
+
+ * Backport libcrypto audit of return value checking from 1.1.0-dev; not
+ all cases can be covered as some introduce binary incompatibilities.
+
+ *Steve Henson*
+
+ * Redirect RSA operations to FIPS module including keygen,
+ encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
+
+ *Steve Henson*
+
+ * Add similar low level API blocking to ciphers.
+
+ *Steve Henson*
+
+ * Low level digest APIs are not approved in FIPS mode: any attempt
+ to use these will cause a fatal error. Applications that *really* want
+ to use them can use the private_* version instead.
+
+ *Steve Henson*
+
+ * Redirect cipher operations to FIPS module for FIPS builds.
+
+ *Steve Henson*
+
+ * Redirect digest operations to FIPS module for FIPS builds.
+
+ *Steve Henson*
+
+ * Update build system to add "fips" flag which will link in fipscanister.o
+ for static and shared library builds embedding a signature if needed.
+
+ *Steve Henson*
+
+ * Output TLS supported curves in preference order instead of numerical
+ order. This is currently hardcoded for the highest order curves first.
+ This should be configurable so applications can judge speed vs strength.
+
+ *Steve Henson*
+
+ * Add TLS v1.2 server support for client authentication.
+
+ *Steve Henson*
+
+ * Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
+ and enable MD5.
+
+ *Steve Henson*
+
+ * Functions FIPS_mode_set() and FIPS_mode() which call the underlying
+ FIPS modules versions.
+
+ *Steve Henson*
+
+ * Add TLS v1.2 client side support for client authentication. Keep cache
+ of handshake records longer as we don't know the hash algorithm to use
+ until after the certificate request message is received.
+
+ *Steve Henson*
+
+ * Initial TLS v1.2 client support. Add a default signature algorithms
+ extension including all the algorithms we support. Parse new signature
+ format in client key exchange. Relax some ECC signing restrictions for
+ TLS v1.2 as indicated in RFC5246.
+
+ *Steve Henson*
+
+ * Add server support for TLS v1.2 signature algorithms extension. Switch
+ to new signature format when needed using client digest preference.
+ All server ciphersuites should now work correctly in TLS v1.2. No client
+ support yet and no support for client certificates.
+
+ *Steve Henson*
+
+ * Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
+ to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
+ ciphersuites. At present only RSA key exchange ciphersuites work with
+ TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
+ SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
+ and version checking.
+
+ *Steve Henson*
+
+ * New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
+ with this defined it will not be affected by any changes to ssl internal
+ structures. Add several utility functions to allow openssl application
+ to work with OPENSSL_NO_SSL_INTERN defined.
+
+ *Steve Henson*
+
+ * A long standing patch to add support for SRP from EdelWeb (Peter
+ Sylvester and Christophe Renou) was integrated.
+ *Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
+ <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
+ Ben Laurie*
+
+ * Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
+
+ *Steve Henson*
+
+ * Permit abbreviated handshakes when renegotiating using the function
+ SSL_renegotiate_abbreviated().
+
+ *Robin Seggelmann <seggelmann@fh-muenster.de>*
+
+ * Add call to ENGINE_register_all_complete() to
+ ENGINE_load_builtin_engines(), so some implementations get used
+ automatically instead of needing explicit application support.
+
+ *Steve Henson*
+
+ * Add support for TLS key exporter as described in RFC5705.
+
+ *Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson*
+
+ * Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
+ a few changes are required:
+
+ Add SSL_OP_NO_TLSv1_1 flag.
+ Add TLSv1_1 methods.
+ Update version checking logic to handle version 1.1.
+ Add explicit IV handling (ported from DTLS code).
+ Add command line options to s_client/s_server.
+
+ *Steve Henson*
+
+### Changes between 1.0.0g and 1.0.0h [12 Mar 2012] ###
+
+ * Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
+ in CMS and PKCS7 code. When RSA decryption fails use a random key for
+ content decryption and always return the same error. Note: this attack
+ needs on average 2^20 messages so it only affects automated senders. The
+ old behaviour can be re-enabled in the CMS code by setting the
+ CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
+ an MMA defence is not necessary.
+ Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
+ this issue. (CVE-2012-0884)
+
+ *Steve Henson*
+
+ * Fix CVE-2011-4619: make sure we really are receiving a
+ client hello before rejecting multiple SGC restarts. Thanks to
+ Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
+
+ *Steve Henson*
+
+### Changes between 1.0.0f and 1.0.0g [18 Jan 2012] ###
+
+ * Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
+ Thanks to Antonio Martin, Enterprise Secure Access Research and
+ Development, Cisco Systems, Inc. for discovering this bug and
+ preparing a fix. (CVE-2012-0050)
+
+ *Antonio Martin*
+
+### Changes between 1.0.0e and 1.0.0f [4 Jan 2012] ###
+
+ * Nadhem Alfardan and Kenny Paterson have discovered an extension
+ of the Vaudenay padding oracle attack on CBC mode encryption
+ which enables an efficient plaintext recovery attack against
+ the OpenSSL implementation of DTLS. Their attack exploits timing
+ differences arising during decryption processing. A research
+ paper describing this attack can be found at:
+ http://www.isg.rhul.ac.uk/~kp/dtls.pdf
+ Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
+ Security Group at Royal Holloway, University of London
+ (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
+ <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
+ for preparing the fix. (CVE-2011-4108)
+
+ *Robin Seggelmann, Michael Tuexen*
+
+ * Clear bytes used for block padding of SSL 3.0 records.
+ (CVE-2011-4576)
+
+ *Adam Langley (Google)*
+
+ * Only allow one SGC handshake restart for SSL/TLS. Thanks to George
+ Kadianakis <desnacked@gmail.com> for discovering this issue and
+ Adam Langley for preparing the fix. (CVE-2011-4619)
+
+ *Adam Langley (Google)*
+
+ * Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
+
+ *Andrey Kulikov <amdeich@gmail.com>*
+
+ * Prevent malformed RFC3779 data triggering an assertion failure.
+ Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
+ and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
+
+ *Rob Austein <sra@hactrn.net>*
+
+ * Improved PRNG seeding for VOS.
+
+ *Paul Green <Paul.Green@stratus.com>*
+
+ * Fix ssl_ciph.c set-up race.
+
+ *Adam Langley (Google)*
+
+ * Fix spurious failures in ecdsatest.c.
+
+ *Emilia Käsper (Google)*
+
+ * Fix the BIO_f_buffer() implementation (which was mixing different
+ interpretations of the '..._len' fields).
+
+ *Adam Langley (Google)*
+
+ * Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
+ BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
+ threads won't reuse the same blinding coefficients.
+
+ This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
+ lock to call BN_BLINDING_invert_ex, and avoids one use of
+ BN_BLINDING_update for each BN_BLINDING structure (previously,
+ the last update always remained unused).
+
+ *Emilia Käsper (Google)*
+
+ * In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
+
+ *Bob Buckholz (Google)*
+
+### Changes between 1.0.0d and 1.0.0e [6 Sep 2011] ###
+
+ * Fix bug where CRLs with nextUpdate in the past are sometimes accepted
+ by initialising X509_STORE_CTX properly. (CVE-2011-3207)
+
+ *Kaspar Brand <ossl@velox.ch>*
+
+ * Fix SSL memory handling for (EC)DH ciphersuites, in particular
+ for multi-threaded use of ECDH. (CVE-2011-3210)
+
+ *Adam Langley (Google)*
+
+ * Fix x509_name_ex_d2i memory leak on bad inputs.
+
+ *Bodo Moeller*
+
+ * Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
+ signature public key algorithm by using OID xref utilities instead.
+ Before this you could only use some ECC ciphersuites with SHA1 only.
+
+ *Steve Henson*
+
+ * Add protection against ECDSA timing attacks as mentioned in the paper
+ by Billy Bob Brumley and Nicola Tuveri, see:
+
+ http://eprint.iacr.org/2011/232.pdf
+
+
+ *Billy Bob Brumley and Nicola Tuveri*
+
+### Changes between 1.0.0c and 1.0.0d [8 Feb 2011] ###
+
+ * Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
+
+ *Neel Mehta, Adam Langley, Bodo Moeller (Google)*
+
+ * Fix bug in string printing code: if *any* escaping is enabled we must
+ escape the escape character (backslash) or the resulting string is
+ ambiguous.
+
+ *Steve Henson*
+
+### Changes between 1.0.0b and 1.0.0c [2 Dec 2010] ###
+
+ * Disable code workaround for ancient and obsolete Netscape browsers
+ and servers: an attacker can use it in a ciphersuite downgrade attack.
+ Thanks to Martin Rex for discovering this bug. CVE-2010-4180
+
+ *Steve Henson*
+
+ * Fixed J-PAKE implementation error, originally discovered by
+ Sebastien Martini, further info and confirmation from Stefan
+ Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
+
+ *Ben Laurie*
+
+### Changes between 1.0.0a and 1.0.0b [16 Nov 2010] ###
+
+ * Fix extension code to avoid race conditions which can result in a buffer
+ overrun vulnerability: resumed sessions must not be modified as they can
+ be shared by multiple threads. CVE-2010-3864
+
+ *Steve Henson*
+
+ * Fix WIN32 build system to correctly link an ENGINE directory into
+ a DLL.
+
+ *Steve Henson*
+
+### Changes between 1.0.0 and 1.0.0a [01 Jun 2010] ###
+
+ * Check return value of int_rsa_verify in pkey_rsa_verifyrecover
+ (CVE-2010-1633)
+
+ *Steve Henson, Peter-Michael Hager <hager@dortmund.net>*
+
+### Changes between 0.9.8n and 1.0.0 [29 Mar 2010] ###
+
+ * Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
+ context. The operation can be customised via the ctrl mechanism in
+ case ENGINEs want to include additional functionality.
+
+ *Steve Henson*
+
+ * Tolerate yet another broken PKCS#8 key format: private key value negative.
+
+ *Steve Henson*
+
+ * Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
+ output hashes compatible with older versions of OpenSSL.
+
+ *Willy Weisz <weisz@vcpc.univie.ac.at>*
+
+ * Fix compression algorithm handling: if resuming a session use the
+ compression algorithm of the resumed session instead of determining
+ it from client hello again. Don't allow server to change algorithm.
+
+ *Steve Henson*
+
+ * Add load_crls() function to apps tidying load_certs() too. Add option
+ to verify utility to allow additional CRLs to be included.
+
+ *Steve Henson*
+
+ * Update OCSP request code to permit adding custom headers to the request:
+ some responders need this.
+
+ *Steve Henson*
+
+ * The function EVP_PKEY_sign() returns <=0 on error: check return code
+ correctly.
+
+ *Julia Lawall <julia@diku.dk>*
+
+ * Update verify callback code in apps/s_cb.c and apps/verify.c, it
+ needlessly dereferenced structures, used obsolete functions and
+ didn't handle all updated verify codes correctly.
+
+ *Steve Henson*
+
+ * Disable MD2 in the default configuration.
+
+ *Steve Henson*
+
+ * In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
+ indicate the initial BIO being pushed or popped. This makes it possible
+ to determine whether the BIO is the one explicitly called or as a result
+ of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
+ it handles reference counts correctly and doesn't zero out the I/O bio
+ when it is not being explicitly popped. WARNING: applications which
+ included workarounds for the old buggy behaviour will need to be modified
+ or they could free up already freed BIOs.
+
+ *Steve Henson*
+
+ * Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
+ renaming to all platforms (within the 0.9.8 branch, this was
+ done conditionally on Netware platforms to avoid a name clash).
+
+ *Guenter <lists@gknw.net>*
+
+ * Add ECDHE and PSK support to DTLS.
+
+ *Michael Tuexen <tuexen@fh-muenster.de>*
+
+ * Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
+ be used on C++.
+
+ *Steve Henson*
+
+ * Add "missing" function EVP_MD_flags() (without this the only way to
+ retrieve a digest flags is by accessing the structure directly. Update
+ EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
+ or cipher is registered as in the "from" argument. Print out all
+ registered digests in the dgst usage message instead of manually
+ attempting to work them out.
+
+ *Steve Henson*
+
+ * If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
+ this allows the use of compression and extensions. Change default cipher
+ string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
+ by default unless an application cipher string requests it.
+
+ *Steve Henson*
+
+ * Alter match criteria in PKCS12_parse(). It used to try to use local
+ key ids to find matching certificates and keys but some PKCS#12 files
+ don't follow the (somewhat unwritten) rules and this strategy fails.
+ Now just gather all certificates together and the first private key
+ then look for the first certificate that matches the key.
+
+ *Steve Henson*
+
+ * Support use of registered digest and cipher names for dgst and cipher
+ commands instead of having to add each one as a special case. So now
+ you can do:
+
+ openssl sha256 foo
+
+ as well as:
+
+ openssl dgst -sha256 foo
+
+ and this works for ENGINE based algorithms too.
+
+
+ *Steve Henson*
+
+ * Update Gost ENGINE to support parameter files.
+
+ *Victor B. Wagner <vitus@cryptocom.ru>*
+
+ * Support GeneralizedTime in ca utility.
+
+ *Oliver Martin <oliver@volatilevoid.net>, Steve Henson*
+
+ * Enhance the hash format used for certificate directory links. The new
+ form uses the canonical encoding (meaning equivalent names will work
+ even if they aren't identical) and uses SHA1 instead of MD5. This form
+ is incompatible with the older format and as a result c_rehash should
+ be used to rebuild symbolic links.
+
+ *Steve Henson*
+
+ * Make PKCS#8 the default write format for private keys, replacing the
+ traditional format. This form is standardised, more secure and doesn't
+ include an implicit MD5 dependency.
+
+ *Steve Henson*
+
+ * Add a $gcc_devteam_warn option to Configure. The idea is that any code
+ committed to OpenSSL should pass this lot as a minimum.
+
+ *Steve Henson*
+
+ * Add session ticket override functionality for use by EAP-FAST.
+
+ *Jouni Malinen <j@w1.fi>*
+
+ * Modify HMAC functions to return a value. Since these can be implemented
+ in an ENGINE errors can occur.
+
+ *Steve Henson*
+
+ * Type-checked OBJ_bsearch_ex.
+
+ *Ben Laurie*
+
+ * Type-checked OBJ_bsearch. Also some constification necessitated
+ by type-checking. Still to come: TXT_DB, bsearch(?),
+ OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
+ CONF_VALUE.
+
+ *Ben Laurie*
+
+ * New function OPENSSL_gmtime_adj() to add a specific number of days and
+ seconds to a tm structure directly, instead of going through OS
+ specific date routines. This avoids any issues with OS routines such
+ as the year 2038 bug. New *_adj() functions for ASN1 time structures
+ and X509_time_adj_ex() to cover the extended range. The existing
+ X509_time_adj() is still usable and will no longer have any date issues.
+
+ *Steve Henson*
+
+ * Delta CRL support. New use deltas option which will attempt to locate
+ and search any appropriate delta CRLs available.
+
+ This work was sponsored by Google.
+
+ *Steve Henson*
+
+ * Support for CRLs partitioned by reason code. Reorganise CRL processing
+ code and add additional score elements. Validate alternate CRL paths
+ as part of the CRL checking and indicate a new error "CRL path validation
+ error" in this case. Applications wanting additional details can use
+ the verify callback and check the new "parent" field. If this is not
+ NULL CRL path validation is taking place. Existing applications won't
+ see this because it requires extended CRL support which is off by
+ default.
+
+ This work was sponsored by Google.
+
+ *Steve Henson*
+
+ * Support for freshest CRL extension.
+
+ This work was sponsored by Google.
+
+ *Steve Henson*
+
+ * Initial indirect CRL support. Currently only supported in the CRLs
+ passed directly and not via lookup. Process certificate issuer
+ CRL entry extension and lookup CRL entries by bother issuer name
+ and serial number. Check and process CRL issuer entry in IDP extension.
+
+ This work was sponsored by Google.
+
+ *Steve Henson*
+
+ * Add support for distinct certificate and CRL paths. The CRL issuer
+ certificate is validated separately in this case. Only enabled if
+ an extended CRL support flag is set: this flag will enable additional
+ CRL functionality in future.
+
+ This work was sponsored by Google.
+
+ *Steve Henson*
+
+ * Add support for policy mappings extension.
+
+ This work was sponsored by Google.
+
+ *Steve Henson*
+
+ * Fixes to pathlength constraint, self issued certificate handling,
+ policy processing to align with RFC3280 and PKITS tests.
+
+ This work was sponsored by Google.
+
+ *Steve Henson*
+
+ * Support for name constraints certificate extension. DN, email, DNS
+ and URI types are currently supported.
+
+ This work was sponsored by Google.
+
+ *Steve Henson*
+
+ * To cater for systems that provide a pointer-based thread ID rather
+ than numeric, deprecate the current numeric thread ID mechanism and
+ replace it with a structure and associated callback type. This
+ mechanism allows a numeric "hash" to be extracted from a thread ID in
+ either case, and on platforms where pointers are larger than 'long',
+ mixing is done to help ensure the numeric 'hash' is usable even if it
+ can't be guaranteed unique. The default mechanism is to use "&errno"
+ as a pointer-based thread ID to distinguish between threads.
+
+ Applications that want to provide their own thread IDs should now use
+ CRYPTO_THREADID_set_callback() to register a callback that will call
+ either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
+
+ Note that ERR_remove_state() is now deprecated, because it is tied
+ to the assumption that thread IDs are numeric. ERR_remove_state(0)
+ to free the current thread's error state should be replaced by
+ ERR_remove_thread_state(NULL).
+
+ (This new approach replaces the functions CRYPTO_set_idptr_callback(),
+ CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
+ OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
+ application was previously providing a numeric thread callback that
+ was inappropriate for distinguishing threads, then uniqueness might
+ have been obtained with &errno that happened immediately in the
+ intermediate development versions of OpenSSL; this is no longer the
+ case, the numeric thread callback will now override the automatic use
+ of &errno.)
+
+ *Geoff Thorpe, with help from Bodo Moeller*
+
+ * Initial support for different CRL issuing certificates. This covers a
+ simple case where the self issued certificates in the chain exist and
+ the real CRL issuer is higher in the existing chain.
+
+ This work was sponsored by Google.
+
+ *Steve Henson*
+
+ * Removed effectively defunct crypto/store from the build.
+
+ *Ben Laurie*
+
+ * Revamp of STACK to provide stronger type-checking. Still to come:
+ TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
+ ASN1_STRING, CONF_VALUE.
+
+ *Ben Laurie*
+
+ * Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
+ RAM on SSL connections. This option can save about 34k per idle SSL.
+
+ *Nick Mathewson*
+
+ * Revamp of LHASH to provide stronger type-checking. Still to come:
+ STACK, TXT_DB, bsearch, qsort.
+
+ *Ben Laurie*
+
+ * Initial support for Cryptographic Message Syntax (aka CMS) based
+ on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
+ support for data, signedData, compressedData, digestedData and
+ encryptedData, envelopedData types included. Scripts to check against
+ RFC4134 examples draft and interop and consistency checks of many
+ content types and variants.
+
+ *Steve Henson*
+
+ * Add options to enc utility to support use of zlib compression BIO.
+
+ *Steve Henson*
+
+ * Extend mk1mf to support importing of options and assembly language
+ files from Configure script, currently only included in VC-WIN32.
+ The assembly language rules can now optionally generate the source
+ files from the associated perl scripts.
+
+ *Steve Henson*
+
+ * Implement remaining functionality needed to support GOST ciphersuites.
+ Interop testing has been performed using CryptoPro implementations.
+
+ *Victor B. Wagner <vitus@cryptocom.ru>*
+
+ * s390x assembler pack.
+
+ *Andy Polyakov*
+
+ * ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
+ "family."
+
+ *Andy Polyakov*
+
+ * Implement Opaque PRF Input TLS extension as specified in
+ draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
+ official specification yet and no extension type assignment by
+ IANA exists, this extension (for now) will have to be explicitly
+ enabled when building OpenSSL by providing the extension number
+ to use. For example, specify an option
+
+ -DTLSEXT_TYPE_opaque_prf_input=0x9527
+
+ to the "config" or "Configure" script to enable the extension,
+ assuming extension number 0x9527 (which is a completely arbitrary
+ and unofficial assignment based on the MD5 hash of the Internet
+ Draft). Note that by doing so, you potentially lose
+ interoperability with other TLS implementations since these might
+ be using the same extension number for other purposes.
+
+ SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
+ opaque PRF input value to use in the handshake. This will create
+ an internal copy of the length-'len' string at 'src', and will
+ return non-zero for success.
+
+ To get more control and flexibility, provide a callback function
+ by using
+
+ SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
+ SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
+
+ where
+
+ int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
+ void *arg;
+
+ Callback function 'cb' will be called in handshakes, and is
+ expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
+ Argument 'arg' is for application purposes (the value as given to
+ SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
+ be provided to the callback function). The callback function
+ has to return non-zero to report success: usually 1 to use opaque
+ PRF input just if possible, or 2 to enforce use of the opaque PRF
+ input. In the latter case, the library will abort the handshake
+ if opaque PRF input is not successfully negotiated.
+
+ Arguments 'peerinput' and 'len' given to the callback function
+ will always be NULL and 0 in the case of a client. A server will
+ see the client's opaque PRF input through these variables if
+ available (NULL and 0 otherwise). Note that if the server
+ provides an opaque PRF input, the length must be the same as the
+ length of the client's opaque PRF input.
+
+ Note that the callback function will only be called when creating
+ a new session (session resumption can resume whatever was
+ previously negotiated), and will not be called in SSL 2.0
+ handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
+ SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
+ for applications that need to enforce opaque PRF input.
+
+
+ *Bodo Moeller*
+
+ * Update ssl code to support digests other than SHA1+MD5 for handshake
+ MAC.
+
+
+ *Victor B. Wagner <vitus@cryptocom.ru>*
+
+ * Add RFC4507 support to OpenSSL. This includes the corrections in
+ RFC4507bis. The encrypted ticket format is an encrypted encoded
+ SSL_SESSION structure, that way new session features are automatically
+ supported.
+
+ If a client application caches session in an SSL_SESSION structure
+ support is transparent because tickets are now stored in the encoded
+ SSL_SESSION.
+
+ The SSL_CTX structure automatically generates keys for ticket
+ protection in servers so again support should be possible
+ with no application modification.
+
+ If a client or server wishes to disable RFC4507 support then the option
+ SSL_OP_NO_TICKET can be set.
+
+ Add a TLS extension debugging callback to allow the contents of any client
+ or server extensions to be examined.
+
+ This work was sponsored by Google.
+
+ *Steve Henson*
+
+ * Final changes to avoid use of pointer pointer casts in OpenSSL.
+ OpenSSL should now compile cleanly on gcc 4.2
+
+ *Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson*
+
+ * Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
+ support including streaming MAC support: this is required for GOST
+ ciphersuite support.
+
+ *Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson*
+
+ * Add option -stream to use PKCS#7 streaming in smime utility. New
+ function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
+ to output in BER and PEM format.
+
+ *Steve Henson*
+
+ * Experimental support for use of HMAC via EVP_PKEY interface. This
+ allows HMAC to be handled via the EVP_DigestSign*() interface. The
+ EVP_PKEY "key" in this case is the HMAC key, potentially allowing
+ ENGINE support for HMAC keys which are unextractable. New -mac and
+ -macopt options to dgst utility.
+
+ *Steve Henson*
+
+ * New option -sigopt to dgst utility. Update dgst to use
+ EVP_Digest{Sign,Verify}*. These two changes make it possible to use
+ alternative signing parameters such as X9.31 or PSS in the dgst
+ utility.
+
+ *Steve Henson*
+
+ * Change ssl_cipher_apply_rule(), the internal function that does
+ the work each time a ciphersuite string requests enabling
+ ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
+ removing ("!foo+bar") a class of ciphersuites: Now it maintains
+ the order of disabled ciphersuites such that those ciphersuites
+ that most recently went from enabled to disabled not only stay
+ in order with respect to each other, but also have higher priority
+ than other disabled ciphersuites the next time ciphersuites are
+ enabled again.
+
+ This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
+ the same ciphersuites as with "HIGH" alone, but in a specific
+ order where the PSK ciphersuites come first (since they are the
+ most recently disabled ciphersuites when "HIGH" is parsed).
+
+ Also, change ssl_create_cipher_list() (using this new
+ functionality) such that between otherwise identical
+ ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
+ the default order.
+
+ *Bodo Moeller*
+
+ * Change ssl_create_cipher_list() so that it automatically
+ arranges the ciphersuites in reasonable order before starting
+ to process the rule string. Thus, the definition for "DEFAULT"
+ (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
+ remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
+ This makes it much easier to arrive at a reasonable default order
+ in applications for which anonymous ciphers are OK (meaning
+ that you can't actually use DEFAULT).
+
+ *Bodo Moeller; suggested by Victor Duchovni*
+
+ * Split the SSL/TLS algorithm mask (as used for ciphersuite string
+ processing) into multiple integers instead of setting
+ "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
+ "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
+ (These masks as well as the individual bit definitions are hidden
+ away into the non-exported interface ssl/ssl_locl.h, so this
+ change to the definition of the SSL_CIPHER structure shouldn't
+ affect applications.) This give us more bits for each of these
+ categories, so there is no longer a need to coagulate AES128 and
+ AES256 into a single algorithm bit, and to coagulate Camellia128
+ and Camellia256 into a single algorithm bit, which has led to all
+ kinds of kludges.
+
+ Thus, among other things, the kludge introduced in 0.9.7m and
+ 0.9.8e for masking out AES256 independently of AES128 or masking
+ out Camellia256 independently of AES256 is not needed here in 0.9.9.
+
+ With the change, we also introduce new ciphersuite aliases that
+ so far were missing: "AES128", "AES256", "CAMELLIA128", and
+ "CAMELLIA256".
+
+ *Bodo Moeller*
+
+ * Add support for dsa-with-SHA224 and dsa-with-SHA256.
+ Use the leftmost N bytes of the signature input if the input is
+ larger than the prime q (with N being the size in bytes of q).
+
+ *Nils Larsch*
+
+ * Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
+ it yet and it is largely untested.
+
+ *Steve Henson*
+
+ * Add support for the ecdsa-with-SHA224/256/384/512 signature types.
+
+ *Nils Larsch*
+
+ * Initial incomplete changes to avoid need for function casts in OpenSSL
+ some compilers (gcc 4.2 and later) reject their use. Safestack is
+ reimplemented. Update ASN1 to avoid use of legacy functions.
+
+ *Steve Henson*
+
+ * Win32/64 targets are linked with Winsock2.
+
+ *Andy Polyakov*
+
+ * Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
+ to external functions. This can be used to increase CRL handling
+ efficiency especially when CRLs are very large by (for example) storing
+ the CRL revoked certificates in a database.
+
+ *Steve Henson*
+
+ * Overhaul of by_dir code. Add support for dynamic loading of CRLs so
+ new CRLs added to a directory can be used. New command line option
+ -verify_return_error to s_client and s_server. This causes real errors
+ to be returned by the verify callback instead of carrying on no matter
+ what. This reflects the way a "real world" verify callback would behave.
+
+ *Steve Henson*
+
+ * GOST engine, supporting several GOST algorithms and public key formats.
+ Kindly donated by Cryptocom.
+
+ *Cryptocom*
+
+ * Partial support for Issuing Distribution Point CRL extension. CRLs
+ partitioned by DP are handled but no indirect CRL or reason partitioning
+ (yet). Complete overhaul of CRL handling: now the most suitable CRL is
+ selected via a scoring technique which handles IDP and AKID in CRLs.
+
+ *Steve Henson*
+
+ * New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
+ will ultimately be used for all verify operations: this will remove the
+ X509_STORE dependency on certificate verification and allow alternative
+ lookup methods. X509_STORE based implementations of these two callbacks.
+
+ *Steve Henson*
+
+ * Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
+ Modify get_crl() to find a valid (unexpired) CRL if possible.
+
+ *Steve Henson*
+
+ * New function X509_CRL_match() to check if two CRLs are identical. Normally
+ this would be called X509_CRL_cmp() but that name is already used by
+ a function that just compares CRL issuer names. Cache several CRL
+ extensions in X509_CRL structure and cache CRLDP in X509.
+
+ *Steve Henson*
+
+ * Store a "canonical" representation of X509_NAME structure (ASN1 Name)
+ this maps equivalent X509_NAME structures into a consistent structure.
+ Name comparison can then be performed rapidly using memcmp().
+
+ *Steve Henson*
+
+ * Non-blocking OCSP request processing. Add -timeout option to ocsp
+ utility.
+
+ *Steve Henson*
+
+ * Allow digests to supply their own micalg string for S/MIME type using
+ the ctrl EVP_MD_CTRL_MICALG.
+
+ *Steve Henson*
+
+ * During PKCS7 signing pass the PKCS7 SignerInfo structure to the
+ EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
+ ctrl. It can then customise the structure before and/or after signing
+ if necessary.
+
+ *Steve Henson*
+
+ * New function OBJ_add_sigid() to allow application defined signature OIDs
+ to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
+ to free up any added signature OIDs.
+
+ *Steve Henson*
+
+ * New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
+ EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
+ digest and cipher tables. New options added to openssl utility:
+ list-message-digest-algorithms and list-cipher-algorithms.
+
+ *Steve Henson*
+
+ * Change the array representation of binary polynomials: the list
+ of degrees of non-zero coefficients is now terminated with -1.
+ Previously it was terminated with 0, which was also part of the
+ value; thus, the array representation was not applicable to
+ polynomials where t^0 has coefficient zero. This change makes
+ the array representation useful in a more general context.
+
+ *Douglas Stebila*
+
+ * Various modifications and fixes to SSL/TLS cipher string
+ handling. For ECC, the code now distinguishes between fixed ECDH
+ with RSA certificates on the one hand and with ECDSA certificates
+ on the other hand, since these are separate ciphersuites. The
+ unused code for Fortezza ciphersuites has been removed.
+
+ For consistency with EDH, ephemeral ECDH is now called "EECDH"
+ (not "ECDHE"). For consistency with the code for DH
+ certificates, use of ECDH certificates is now considered ECDH
+ authentication, not RSA or ECDSA authentication (the latter is
+ merely the CA's signing algorithm and not actively used in the
+ protocol).
+
+ The temporary ciphersuite alias "ECCdraft" is no longer
+ available, and ECC ciphersuites are no longer excluded from "ALL"
+ and "DEFAULT". The following aliases now exist for RFC 4492
+ ciphersuites, most of these by analogy with the DH case:
+
+ kECDHr - ECDH cert, signed with RSA
+ kECDHe - ECDH cert, signed with ECDSA
+ kECDH - ECDH cert (signed with either RSA or ECDSA)
+ kEECDH - ephemeral ECDH
+ ECDH - ECDH cert or ephemeral ECDH
+
+ aECDH - ECDH cert
+ aECDSA - ECDSA cert
+ ECDSA - ECDSA cert
+
+ AECDH - anonymous ECDH
+ EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
+
+
+ *Bodo Moeller*
+
+ * Add additional S/MIME capabilities for AES and GOST ciphers if supported.
+ Use correct micalg parameters depending on digest(s) in signed message.
+
+ *Steve Henson*
+
+ * Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
+ an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
+
+ *Steve Henson*
+
+ * Initial engine support for EVP_PKEY_METHOD. New functions to permit
+ an engine to register a method. Add ENGINE lookups for methods and
+ functional reference processing.
+
+ *Steve Henson*
+
+ * New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
+ EVP_{Sign,Verify}* which allow an application to customise the signature
+ process.
+
+ *Steve Henson*
+
+ * New -resign option to smime utility. This adds one or more signers
+ to an existing PKCS#7 signedData structure. Also -md option to use an
+ alternative message digest algorithm for signing.
+
+ *Steve Henson*
+
+ * Tidy up PKCS#7 routines and add new functions to make it easier to
+ create PKCS7 structures containing multiple signers. Update smime
+ application to support multiple signers.
+
+ *Steve Henson*
+
+ * New -macalg option to pkcs12 utility to allow setting of an alternative
+ digest MAC.
+
+ *Steve Henson*
+
+ * Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
+ Reorganize PBE internals to lookup from a static table using NIDs,
+ add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
+ EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
+ PRF which will be automatically used with PBES2.
+
+ *Steve Henson*
+
+ * Replace the algorithm specific calls to generate keys in "req" with the
+ new API.
+
+ *Steve Henson*
+
+ * Update PKCS#7 enveloped data routines to use new API. This is now
+ supported by any public key method supporting the encrypt operation. A
+ ctrl is added to allow the public key algorithm to examine or modify
+ the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
+ a no op.
+
+ *Steve Henson*
+
+ * Add a ctrl to asn1 method to allow a public key algorithm to express
+ a default digest type to use. In most cases this will be SHA1 but some
+ algorithms (such as GOST) need to specify an alternative digest. The
+ return value indicates how strong the preference is 1 means optional and
+ 2 is mandatory (that is it is the only supported type). Modify
+ ASN1_item_sign() to accept a NULL digest argument to indicate it should
+ use the default md. Update openssl utilities to use the default digest
+ type for signing if it is not explicitly indicated.
+
+ *Steve Henson*
+
+ * Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
+ EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
+ signing method from the key type. This effectively removes the link
+ between digests and public key types.
+
+ *Steve Henson*
+
+ * Add an OID cross reference table and utility functions. Its purpose is to
+ translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
+ rsaEncryption. This will allow some of the algorithm specific hackery
+ needed to use the correct OID to be removed.
+
+ *Steve Henson*
+
+ * Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
+ structures for PKCS7_sign(). They are now set up by the relevant public
+ key ASN1 method.
+
+ *Steve Henson*
+
+ * Add provisional EC pkey method with support for ECDSA and ECDH.
+
+ *Steve Henson*
+
+ * Add support for key derivation (agreement) in the API, DH method and
+ pkeyutl.
+
+ *Steve Henson*
+
+ * Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
+ public and private key formats. As a side effect these add additional
+ command line functionality not previously available: DSA signatures can be
+ generated and verified using pkeyutl and DH key support and generation in
+ pkey, genpkey.
+
+ *Steve Henson*
+
+ * BeOS support.
+
+ *Oliver Tappe <zooey@hirschkaefer.de>*
+
+ * New make target "install_html_docs" installs HTML renditions of the
+ manual pages.
+
+ *Oliver Tappe <zooey@hirschkaefer.de>*
+
+ * New utility "genpkey" this is analogous to "genrsa" etc except it can
+ generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
+ support key and parameter generation and add initial key generation
+ functionality for RSA.
+
+ *Steve Henson*
+
+ * Add functions for main EVP_PKEY_method operations. The undocumented
+ functions EVP_PKEY_{encrypt,decrypt} have been renamed to
+ EVP_PKEY_{encrypt,decrypt}_old.
+
+ *Steve Henson*
+
+ * Initial definitions for EVP_PKEY_METHOD. This will be a high level public
+ key API, doesn't do much yet.
+
+ *Steve Henson*
+
+ * New function EVP_PKEY_asn1_get0_info() to retrieve information about
+ public key algorithms. New option to openssl utility:
+ "list-public-key-algorithms" to print out info.
+
+ *Steve Henson*
+
+ * Implement the Supported Elliptic Curves Extension for
+ ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
+
+ *Douglas Stebila*
+
+ * Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
+ EVP_CIPHER structures to avoid later problems in EVP_cleanup().
+
+ *Steve Henson*
+
+ * New utilities pkey and pkeyparam. These are similar to algorithm specific
+ utilities such as rsa, dsa, dsaparam etc except they process any key
+ type.
+
+ *Steve Henson*
+
+ * Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
+ functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
+ EVP_PKEY_print_param() to print public key data from an EVP_PKEY
+ structure.
+
+ *Steve Henson*
+
+ * Initial support for pluggable public key ASN1.
+ De-spaghettify the public key ASN1 handling. Move public and private
+ key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
+ algorithm specific handling to a single module within the relevant
+ algorithm directory. Add functions to allow (near) opaque processing
+ of public and private key structures.
+
+ *Steve Henson*
+
+ * Implement the Supported Point Formats Extension for
+ ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
+
+ *Douglas Stebila*
+
+ * Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
+ for the psk identity [hint] and the psk callback functions to the
+ SSL_SESSION, SSL and SSL_CTX structure.
+
+ New ciphersuites:
+ PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
+ PSK-AES256-CBC-SHA
+
+ New functions:
+ SSL_CTX_use_psk_identity_hint
+ SSL_get_psk_identity_hint
+ SSL_get_psk_identity
+ SSL_use_psk_identity_hint
+
+
+ *Mika Kousa and Pasi Eronen of Nokia Corporation*
+
+ * Add RFC 3161 compliant time stamp request creation, response generation
+ and response verification functionality.
+
+ *Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project*
+
+ * Add initial support for TLS extensions, specifically for the server_name
+ extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
+ have new members for a host name. The SSL data structure has an
+ additional member SSL_CTX *initial_ctx so that new sessions can be
+ stored in that context to allow for session resumption, even after the
+ SSL has been switched to a new SSL_CTX in reaction to a client's
+ server_name extension.
+
+ New functions (subject to change):
+
+ SSL_get_servername()
+ SSL_get_servername_type()
+ SSL_set_SSL_CTX()
+
+ New CTRL codes and macros (subject to change):
+
+ SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
+ - SSL_CTX_set_tlsext_servername_callback()
+ SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
+ - SSL_CTX_set_tlsext_servername_arg()
+ SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
+
+ openssl s_client has a new '-servername ...' option.
+
+ openssl s_server has new options '-servername_host ...', '-cert2 ...',
+ '-key2 ...', '-servername_fatal' (subject to change). This allows
+ testing the HostName extension for a specific single host name ('-cert'
+ and '-key' remain fallbacks for handshakes without HostName
+ negotiation). If the unrecognized_name alert has to be sent, this by
+ default is a warning; it becomes fatal with the '-servername_fatal'
+ option.
+
+
+ *Peter Sylvester, Remy Allais, Christophe Renou*
+
+ * Whirlpool hash implementation is added.
+
+ *Andy Polyakov*
+
+ * BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
+ bn(64,32). Because of instruction set limitations it doesn't have
+ any negative impact on performance. This was done mostly in order
+ to make it possible to share assembler modules, such as bn_mul_mont
+ implementations, between 32- and 64-bit builds without hassle.
+
+ *Andy Polyakov*
+
+ * Move code previously exiled into file crypto/ec/ec2_smpt.c
+ to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
+ macro.
+
+ *Bodo Moeller*
+
+ * New candidate for BIGNUM assembler implementation, bn_mul_mont,
+ dedicated Montgomery multiplication procedure, is introduced.
+ BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
+ "64-bit" performance on certain 32-bit targets.
+
+ *Andy Polyakov*
+
+ * New option SSL_OP_NO_COMP to disable use of compression selectively
+ in SSL structures. New SSL ctrl to set maximum send fragment size.
+ Save memory by setting the I/O buffer sizes dynamically instead of
+ using the maximum available value.
+
+ *Steve Henson*
+
+ * New option -V for 'openssl ciphers'. This prints the ciphersuite code
+ in addition to the text details.
+
+ *Bodo Moeller*
+
+ * Very, very preliminary EXPERIMENTAL support for printing of general
+ ASN1 structures. This currently produces rather ugly output and doesn't
+ handle several customised structures at all.
+
+ *Steve Henson*
+
+ * Integrated support for PVK file format and some related formats such
+ as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
+ these in the 'rsa' and 'dsa' utilities.
+
+ *Steve Henson*
+
+ * Support for PKCS#1 RSAPublicKey format on rsa utility command line.
+
+ *Steve Henson*
+
+ * Remove the ancient ASN1_METHOD code. This was only ever used in one
+ place for the (very old) "NETSCAPE" format certificates which are now
+ handled using new ASN1 code equivalents.
+
+ *Steve Henson*
+
+ * Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
+ pointer and make the SSL_METHOD parameter in SSL_CTX_new,
+ SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
+
+ *Nils Larsch*
+
+ * Modify CRL distribution points extension code to print out previously
+ unsupported fields. Enhance extension setting code to allow setting of
+ all fields.
+
+ *Steve Henson*
+
+ * Add print and set support for Issuing Distribution Point CRL extension.
+
+ *Steve Henson*
+
+ * Change 'Configure' script to enable Camellia by default.
+
+ *NTT*
+
+### Changes between 0.9.8m and 0.9.8n [24 Mar 2010] ###
+
+ * When rejecting SSL/TLS records due to an incorrect version number, never
+ update s->server with a new major version number. As of
+ - OpenSSL 0.9.8m if 'short' is a 16-bit type,
+ - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
+ the previous behavior could result in a read attempt at NULL when
+ receiving specific incorrect SSL/TLS records once record payload
+ protection is active. (CVE-2010-0740)
+
+ *Bodo Moeller, Adam Langley <agl@chromium.org>*
+
+ * Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
+ could be crashed if the relevant tables were not present (e.g. chrooted).
+
+ *Tomas Hoger <thoger@redhat.com>*
+
+### Changes between 0.9.8l and 0.9.8m [25 Feb 2010] ###
+
+ * Always check bn_wexpand() return values for failure. (CVE-2009-3245)
+
+ *Martin Olsson, Neel Mehta*
+
+ * Fix X509_STORE locking: Every 'objs' access requires a lock (to
+ accommodate for stack sorting, always a write lock!).
+
+ *Bodo Moeller*
+
+ * On some versions of WIN32 Heap32Next is very slow. This can cause
+ excessive delays in the RAND_poll(): over a minute. As a workaround
+ include a time check in the inner Heap32Next loop too.
+
+ *Steve Henson*
+
+ * The code that handled flushing of data in SSL/TLS originally used the
+ BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
+ the problem outlined in PR#1949. The fix suggested there however can
+ trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
+ of Apache). So instead simplify the code to flush unconditionally.
+ This should be fine since flushing with no data to flush is a no op.
+
+ *Steve Henson*
+
+ * Handle TLS versions 2.0 and later properly and correctly use the
+ highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
+ off ancient servers have a habit of sticking around for a while...
+
+ *Steve Henson*
+
+ * Modify compression code so it frees up structures without using the
+ ex_data callbacks. This works around a problem where some applications
+ call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
+ restarting) then use compression (e.g. SSL with compression) later.
+ This results in significant per-connection memory leaks and
+ has caused some security issues including CVE-2008-1678 and
+ CVE-2009-4355.
+
+ *Steve Henson*
+
+ * Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
+ change when encrypting or decrypting.
+
+ *Bodo Moeller*
+
+ * Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
+ connect and renegotiate with servers which do not support RI.
+ Until RI is more widely deployed this option is enabled by default.
+
+ *Steve Henson*
+
+ * Add "missing" ssl ctrls to clear options and mode.
+
+ *Steve Henson*
+
+ * If client attempts to renegotiate and doesn't support RI respond with
+ a no_renegotiation alert as required by RFC5746. Some renegotiating
+ TLS clients will continue a connection gracefully when they receive
+ the alert. Unfortunately OpenSSL mishandled this alert and would hang
+ waiting for a server hello which it will never receive. Now we treat a
+ received no_renegotiation alert as a fatal error. This is because
+ applications requesting a renegotiation might well expect it to succeed
+ and would have no code in place to handle the server denying it so the
+ only safe thing to do is to terminate the connection.
+
+ *Steve Henson*
+
+ * Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
+ peer supports secure renegotiation and 0 otherwise. Print out peer
+ renegotiation support in s_client/s_server.
+
+ *Steve Henson*
+
+ * Replace the highly broken and deprecated SPKAC certification method with
+ the updated NID creation version. This should correctly handle UTF8.
+
+ *Steve Henson*
+
+ * Implement RFC5746. Re-enable renegotiation but require the extension
+ as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
+ turns out to be a bad idea. It has been replaced by
+ SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
+ SSL_CTX_set_options(). This is really not recommended unless you
+ know what you are doing.
+
+ *Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson*
+
+ * Fixes to stateless session resumption handling. Use initial_ctx when
+ issuing and attempting to decrypt tickets in case it has changed during
+ servername handling. Use a non-zero length session ID when attempting
+ stateless session resumption: this makes it possible to determine if
+ a resumption has occurred immediately after receiving server hello
+ (several places in OpenSSL subtly assume this) instead of later in
+ the handshake.
+
+ *Steve Henson*
+
+ * The functions ENGINE_ctrl(), OPENSSL_isservice(),
+ CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
+ fixes for a few places where the return code is not checked
+ correctly.
+
+ *Julia Lawall <julia@diku.dk>*
+
+ * Add --strict-warnings option to Configure script to include devteam
+ warnings in other configurations.
+
+ *Steve Henson*
+
+ * Add support for --libdir option and LIBDIR variable in makefiles. This
+ makes it possible to install openssl libraries in locations which
+ have names other than "lib", for example "/usr/lib64" which some
+ systems need.
+
+ *Steve Henson, based on patch from Jeremy Utley*
+
+ * Don't allow the use of leading 0x80 in OIDs. This is a violation of
+ X690 8.9.12 and can produce some misleading textual output of OIDs.
+
+ *Steve Henson, reported by Dan Kaminsky*
+
+ * Delete MD2 from algorithm tables. This follows the recommendation in
+ several standards that it is not used in new applications due to
+ several cryptographic weaknesses. For binary compatibility reasons
+ the MD2 API is still compiled in by default.
+
+ *Steve Henson*
+
+ * Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
+ and restored.
+
+ *Steve Henson*
+
+ * Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
+ OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
+ clash.
+
+ *Guenter <lists@gknw.net>*
+
+ * Fix the server certificate chain building code to use X509_verify_cert(),
+ it used to have an ad-hoc builder which was unable to cope with anything
+ other than a simple chain.
+
+ *David Woodhouse <dwmw2@infradead.org>, Steve Henson*
+
+ * Don't check self signed certificate signatures in X509_verify_cert()
+ by default (a flag can override this): it just wastes time without
+ adding any security. As a useful side effect self signed root CAs
+ with non-FIPS digests are now usable in FIPS mode.
+
+ *Steve Henson*
+
+ * In dtls1_process_out_of_seq_message() the check if the current message
+ is already buffered was missing. For every new message was memory
+ allocated, allowing an attacker to perform an denial of service attack
+ with sending out of seq handshake messages until there is no memory
+ left. Additionally every future message was buffered, even if the
+ sequence number made no sense and would be part of another handshake.
+ So only messages with sequence numbers less than 10 in advance will be
+ buffered. (CVE-2009-1378)
+
+ *Robin Seggelmann, discovered by Daniel Mentz*
+
+ * Records are buffered if they arrive with a future epoch to be
+ processed after finishing the corresponding handshake. There is
+ currently no limitation to this buffer allowing an attacker to perform
+ a DOS attack with sending records with future epochs until there is no
+ memory left. This patch adds the pqueue_size() function to determine
+ the size of a buffer and limits the record buffer to 100 entries.
+ (CVE-2009-1377)
+
+ *Robin Seggelmann, discovered by Daniel Mentz*
+
+ * Keep a copy of frag->msg_header.frag_len so it can be used after the
+ parent structure is freed. (CVE-2009-1379)
+
+ *Daniel Mentz*
+
+ * Handle non-blocking I/O properly in SSL_shutdown() call.
+
+ *Darryl Miles <darryl-mailinglists@netbauds.net>*
+
+ * Add 2.5.4.* OIDs
+
+ *Ilya O. <vrghost@gmail.com>*
+
+### Changes between 0.9.8k and 0.9.8l [5 Nov 2009] ###
+
+ * Disable renegotiation completely - this fixes a severe security
+ problem (CVE-2009-3555) at the cost of breaking all
+ renegotiation. Renegotiation can be re-enabled by setting
+ SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
+ run-time. This is really not recommended unless you know what
+ you're doing.
+
+ *Ben Laurie*
+
+### Changes between 0.9.8j and 0.9.8k [25 Mar 2009] ###
+
+ * Don't set val to NULL when freeing up structures, it is freed up by
+ underlying code. If sizeof(void *) > sizeof(long) this can result in
+ zeroing past the valid field. (CVE-2009-0789)
+
+ *Paolo Ganci <Paolo.Ganci@AdNovum.CH>*
+
+ * Fix bug where return value of CMS_SignerInfo_verify_content() was not
+ checked correctly. This would allow some invalid signed attributes to
+ appear to verify correctly. (CVE-2009-0591)
+
+ *Ivan Nestlerode <inestlerode@us.ibm.com>*
+
+ * Reject UniversalString and BMPString types with invalid lengths. This
+ prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
+ a legal length. (CVE-2009-0590)
+
+ *Steve Henson*
+
+ * Set S/MIME signing as the default purpose rather than setting it
+ unconditionally. This allows applications to override it at the store
+ level.
+
+ *Steve Henson*
+
+ * Permit restricted recursion of ASN1 strings. This is needed in practice
+ to handle some structures.
+
+ *Steve Henson*
+
+ * Improve efficiency of mem_gets: don't search whole buffer each time
+ for a '\n'
+
+ *Jeremy Shapiro <jnshapir@us.ibm.com>*
+
+ * New -hex option for openssl rand.
+
+ *Matthieu Herrb*
+
+ * Print out UTF8String and NumericString when parsing ASN1.
+
+ *Steve Henson*
+
+ * Support NumericString type for name components.
+
+ *Steve Henson*
+
+ * Allow CC in the environment to override the automatically chosen
+ compiler. Note that nothing is done to ensure flags work with the
+ chosen compiler.
+
+ *Ben Laurie*
+
+### Changes between 0.9.8i and 0.9.8j [07 Jan 2009] ###
+
+ * Properly check EVP_VerifyFinal() and similar return values
+ (CVE-2008-5077).
+
+ *Ben Laurie, Bodo Moeller, Google Security Team*
+
+ * Enable TLS extensions by default.
+
+ *Ben Laurie*
+
+ * Allow the CHIL engine to be loaded, whether the application is
+ multithreaded or not. (This does not release the developer from the
+ obligation to set up the dynamic locking callbacks.)
+
+ *Sander Temme <sander@temme.net>*
+
+ * Use correct exit code if there is an error in dgst command.
+
+ *Steve Henson; problem pointed out by Roland Dirlewanger*
+
+ * Tweak Configure so that you need to say "experimental-jpake" to enable
+ JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
+
+ *Bodo Moeller*
+
+ * Add experimental JPAKE support, including demo authentication in
+ s_client and s_server.
+
+ *Ben Laurie*
+
+ * Set the comparison function in v3_addr_canonize().
+
+ *Rob Austein <sra@hactrn.net>*
+
+ * Add support for XMPP STARTTLS in s_client.
+
+ *Philip Paeps <philip@freebsd.org>*
+
+ * Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
+ to ensure that even with this option, only ciphersuites in the
+ server's preference list will be accepted. (Note that the option
+ applies only when resuming a session, so the earlier behavior was
+ just about the algorithm choice for symmetric cryptography.)
+
+ *Bodo Moeller*
+
+### Changes between 0.9.8h and 0.9.8i [15 Sep 2008] ###
+
+ * Fix NULL pointer dereference if a DTLS server received
+ ChangeCipherSpec as first record (CVE-2009-1386).
+
+ *PR #1679*
+
+ * Fix a state transition in s3_srvr.c and d1_srvr.c
+ (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
+
+ *Nagendra Modadugu*
+
+ * The fix in 0.9.8c that supposedly got rid of unsafe
+ double-checked locking was incomplete for RSA blinding,
+ addressing just one layer of what turns out to have been
+ doubly unsafe triple-checked locking.
+
+ So now fix this for real by retiring the MONT_HELPER macro
+ in crypto/rsa/rsa_eay.c.
+
+
+ *Bodo Moeller; problem pointed out by Marius Schilder*
+
+ * Various precautionary measures:
+
+ - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
+
+ - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
+ (NB: This would require knowledge of the secret session ticket key
+ to exploit, in which case you'd be SOL either way.)
+
+ - Change bn_nist.c so that it will properly handle input BIGNUMs
+ outside the expected range.
+
+ - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
+ builds.
+
+
+ *Neel Mehta, Bodo Moeller*
+
+ * Allow engines to be "soft loaded" - i.e. optionally don't die if
+ the load fails. Useful for distros.
+
+ *Ben Laurie and the FreeBSD team*
+
+ * Add support for Local Machine Keyset attribute in PKCS#12 files.
+
+ *Steve Henson*
+
+ * Fix BN_GF2m_mod_arr() top-bit cleanup code.
+
+ *Huang Ying*
+
+ * Expand ENGINE to support engine supplied SSL client certificate functions.
+
+ This work was sponsored by Logica.
+
+ *Steve Henson*
+
+ * Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
+ keystores. Support for SSL/TLS client authentication too.
+ Not compiled unless enable-capieng specified to Configure.
+
+ This work was sponsored by Logica.
+
+ *Steve Henson*
+
+ * Fix bug in X509_ATTRIBUTE creation: don't set attribute using
+ ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
+ attribute creation routines such as certificate requests and PKCS#12
+ files.
+
+ *Steve Henson*
+
+### Changes between 0.9.8g and 0.9.8h [28 May 2008] ###
+
+ * Fix flaw if 'Server Key exchange message' is omitted from a TLS
+ handshake which could lead to a client crash as found using the
+ Codenomicon TLS test suite (CVE-2008-1672)
+
+ *Steve Henson, Mark Cox*
+
+ * Fix double free in TLS server name extensions which could lead to
+ a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
+
+ *Joe Orton*
+
+ * Clear error queue in SSL_CTX_use_certificate_chain_file()
+
+ Clear the error queue to ensure that error entries left from
+ older function calls do not interfere with the correct operation.
+
+ *Lutz Jaenicke, Erik de Castro Lopo*
+
+ * Remove root CA certificates of commercial CAs:
+
+ The OpenSSL project does not recommend any specific CA and does not
+ have any policy with respect to including or excluding any CA.
+ Therefore it does not make any sense to ship an arbitrary selection
+ of root CA certificates with the OpenSSL software.
+
+ *Lutz Jaenicke*
+
+ * RSA OAEP patches to fix two separate invalid memory reads.
+ The first one involves inputs when 'lzero' is greater than
+ 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
+ before the beginning of from). The second one involves inputs where
+ the 'db' section contains nothing but zeroes (there is a one-byte
+ invalid read after the end of 'db').
+
+ *Ivan Nestlerode <inestlerode@us.ibm.com>*
+
+ * Partial backport from 0.9.9-dev:
+
+ Introduce bn_mul_mont (dedicated Montgomery multiplication
+ procedure) as a candidate for BIGNUM assembler implementation.
+ While 0.9.9-dev uses assembler for various architectures, only
+ x86_64 is available by default here in the 0.9.8 branch, and
+ 32-bit x86 is available through a compile-time setting.
+
+ To try the 32-bit x86 assembler implementation, use Configure
+ option "enable-montasm" (which exists only for this backport).
+
+ As "enable-montasm" for 32-bit x86 disclaims code stability
+ anyway, in this constellation we activate additional code
+ backported from 0.9.9-dev for further performance improvements,
+ namely BN_from_montgomery_word. (To enable this otherwise,
+ e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
+
+
+ *Andy Polyakov (backport partially by Bodo Moeller)*
+
+ * Add TLS session ticket callback. This allows an application to set
+ TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
+ values. This is useful for key rollover for example where several key
+ sets may exist with different names.
+
+ *Steve Henson*
+
+ * Reverse ENGINE-internal logic for caching default ENGINE handles.
+ This was broken until now in 0.9.8 releases, such that the only way
+ a registered ENGINE could be used (assuming it initialises
+ successfully on the host) was to explicitly set it as the default
+ for the relevant algorithms. This is in contradiction with 0.9.7
+ behaviour and the documentation. With this fix, when an ENGINE is
+ registered into a given algorithm's table of implementations, the
+ 'uptodate' flag is reset so that auto-discovery will be used next
+ time a new context for that algorithm attempts to select an
+ implementation.
+
+ *Ian Lister (tweaked by Geoff Thorpe)*
+
+ * Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
+ implementation in the following ways:
+
+ Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
+ hard coded.
+
+ Lack of BER streaming support means one pass streaming processing is
+ only supported if data is detached: setting the streaming flag is
+ ignored for embedded content.
+
+ CMS support is disabled by default and must be explicitly enabled
+ with the enable-cms configuration option.
+
+ *Steve Henson*
+
+ * Update the GMP engine glue to do direct copies between BIGNUM and
+ mpz_t when openssl and GMP use the same limb size. Otherwise the
+ existing "conversion via a text string export" trick is still used.
+
+ *Paul Sheer <paulsheer@gmail.com>*
+
+ * Zlib compression BIO. This is a filter BIO which compressed and
+ uncompresses any data passed through it.
+
+ *Steve Henson*
+
+ * Add AES_wrap_key() and AES_unwrap_key() functions to implement
+ RFC3394 compatible AES key wrapping.
+
+ *Steve Henson*
+
+ * Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
+ sets string data without copying. X509_ALGOR_set0() and
+ X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
+ data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
+ from an X509_ATTRIBUTE structure optionally checking it occurs only
+ once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
+ data.
+
+ *Steve Henson*
+
+ * Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
+ to get the expected BN_FLG_CONSTTIME behavior.
+
+ *Bodo Moeller (Google)*
+
+ * Netware support:
+
+ - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
+ - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
+ - added some more tests to do_tests.pl
+ - fixed RunningProcess usage so that it works with newer LIBC NDKs too
+ - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
+ - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
+ netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
+ - various changes to netware.pl to enable gcc-cross builds on Win32
+ platform
+ - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
+ - various changes to fix missing prototype warnings
+ - fixed x86nasm.pl to create correct asm files for NASM COFF output
+ - added AES, WHIRLPOOL and CPUID assembler code to build files
+ - added missing AES assembler make rules to mk1mf.pl
+ - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
+
+ *Guenter Knauf <eflash@gmx.net>*
+
+ * Implement certificate status request TLS extension defined in RFC3546.
+ A client can set the appropriate parameters and receive the encoded
+ OCSP response via a callback. A server can query the supplied parameters
+ and set the encoded OCSP response in the callback. Add simplified examples
+ to s_client and s_server.
+
+ *Steve Henson*
+
+### Changes between 0.9.8f and 0.9.8g [19 Oct 2007] ###
+
+ * Fix various bugs:
+ + Binary incompatibility of ssl_ctx_st structure
+ + DTLS interoperation with non-compliant servers
+ + Don't call get_session_cb() without proposed session
+ + Fix ia64 assembler code
+
+ *Andy Polyakov, Steve Henson*
+
+### Changes between 0.9.8e and 0.9.8f [11 Oct 2007] ###
+
+ * DTLS Handshake overhaul. There were longstanding issues with
+ OpenSSL DTLS implementation, which were making it impossible for
+ RFC 4347 compliant client to communicate with OpenSSL server.
+ Unfortunately just fixing these incompatibilities would "cut off"
+ pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
+ server keeps tolerating non RFC compliant syntax. The opposite is
+ not true, 0.9.8f client can not communicate with earlier server.
+ This update even addresses CVE-2007-4995.
+
+ *Andy Polyakov*
+
+ * Changes to avoid need for function casts in OpenSSL: some compilers
+ (gcc 4.2 and later) reject their use.
+ *Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
+ Steve Henson*
+
+ * Add RFC4507 support to OpenSSL. This includes the corrections in
+ RFC4507bis. The encrypted ticket format is an encrypted encoded
+ SSL_SESSION structure, that way new session features are automatically
+ supported.
+
+ If a client application caches session in an SSL_SESSION structure
+ support is transparent because tickets are now stored in the encoded
+ SSL_SESSION.
+
+ The SSL_CTX structure automatically generates keys for ticket
+ protection in servers so again support should be possible
+ with no application modification.
+
+ If a client or server wishes to disable RFC4507 support then the option
+ SSL_OP_NO_TICKET can be set.
+
+ Add a TLS extension debugging callback to allow the contents of any client
+ or server extensions to be examined.
+
+ This work was sponsored by Google.
+
+ *Steve Henson*
+
+ * Add initial support for TLS extensions, specifically for the server_name
+ extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
+ have new members for a host name. The SSL data structure has an
+ additional member SSL_CTX *initial_ctx so that new sessions can be
+ stored in that context to allow for session resumption, even after the
+ SSL has been switched to a new SSL_CTX in reaction to a client's
+ server_name extension.
+
+ New functions (subject to change):
+
+ SSL_get_servername()
+ SSL_get_servername_type()
+ SSL_set_SSL_CTX()
+
+ New CTRL codes and macros (subject to change):
+
+ SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
+ - SSL_CTX_set_tlsext_servername_callback()
+ SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
+ - SSL_CTX_set_tlsext_servername_arg()
+ SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
+
+ openssl s_client has a new '-servername ...' option.
+
+ openssl s_server has new options '-servername_host ...', '-cert2 ...',
+ '-key2 ...', '-servername_fatal' (subject to change). This allows
+ testing the HostName extension for a specific single host name ('-cert'
+ and '-key' remain fallbacks for handshakes without HostName
+ negotiation). If the unrecognized_name alert has to be sent, this by
+ default is a warning; it becomes fatal with the '-servername_fatal'
+ option.
+
+
+ *Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson*
+
+ * Add AES and SSE2 assembly language support to VC++ build.
+
+ *Steve Henson*
+
+ * Mitigate attack on final subtraction in Montgomery reduction.
+
+ *Andy Polyakov*
+
+ * Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
+ (which previously caused an internal error).
+
+ *Bodo Moeller*
+
+ * Squeeze another 10% out of IGE mode when in != out.
+
+ *Ben Laurie*
+
+ * AES IGE mode speedup.
+
+ *Dean Gaudet (Google)*
+
+ * Add the Korean symmetric 128-bit cipher SEED (see
+ http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
+ add SEED ciphersuites from RFC 4162:
+
+ TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
+ TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
+ TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
+ TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
+
+ To minimize changes between patchlevels in the OpenSSL 0.9.8
+ series, SEED remains excluded from compilation unless OpenSSL
+ is configured with 'enable-seed'.
+
+ *KISA, Bodo Moeller*
+
+ * Mitigate branch prediction attacks, which can be practical if a
+ single processor is shared, allowing a spy process to extract
+ information. For detailed background information, see
+ http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
+ J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
+ and Necessary Software Countermeasures"). The core of the change
+ are new versions BN_div_no_branch() and
+ BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
+ respectively, which are slower, but avoid the security-relevant
+ conditional branches. These are automatically called by BN_div()
+ and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
+ of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
+ remove a conditional branch.
+
+ BN_FLG_CONSTTIME is the new name for the previous
+ BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
+ modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
+ in the exponent causes BN_mod_exp_mont() to use the alternative
+ implementation in BN_mod_exp_mont_consttime().) The old name
+ remains as a deprecated alias.
+
+ Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
+ RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
+ constant-time implementations for more than just exponentiation.
+ Here too the old name is kept as a deprecated alias.
+
+ BN_BLINDING_new() will now use BN_dup() for the modulus so that
+ the BN_BLINDING structure gets an independent copy of the
+ modulus. This means that the previous "BIGNUM *m" argument to
+ BN_BLINDING_new() and to BN_BLINDING_create_param() now
+ essentially becomes "const BIGNUM *m", although we can't actually
+ change this in the header file before 0.9.9. It allows
+ RSA_setup_blinding() to use BN_with_flags() on the modulus to
+ enable BN_FLG_CONSTTIME.
+
+
+ *Matthew D Wood (Intel Corp)*
+
+ * In the SSL/TLS server implementation, be strict about session ID
+ context matching (which matters if an application uses a single
+ external cache for different purposes). Previously,
+ out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
+ set. This did ensure strict client verification, but meant that,
+ with applications using a single external cache for quite
+ different requirements, clients could circumvent ciphersuite
+ restrictions for a given session ID context by starting a session
+ in a different context.
+
+ *Bodo Moeller*
+
+ * Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
+ a ciphersuite string such as "DEFAULT:RSA" cannot enable
+ authentication-only ciphersuites.
+
+ *Bodo Moeller*
+
+ * Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
+ not complete and could lead to a possible single byte overflow
+ (CVE-2007-5135) [Ben Laurie]
+
+### Changes between 0.9.8d and 0.9.8e [23 Feb 2007] ###
+
+ * Since AES128 and AES256 (and similarly Camellia128 and
+ Camellia256) share a single mask bit in the logic of
+ ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
+ kludge to work properly if AES128 is available and AES256 isn't
+ (or if Camellia128 is available and Camellia256 isn't).
+
+ *Victor Duchovni*
+
+ * Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
+ (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
+ When a point or a seed is encoded in a BIT STRING, we need to
+ prevent the removal of trailing zero bits to get the proper DER
+ encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
+ of a NamedBitList, for which trailing 0 bits need to be removed.)
+
+ *Bodo Moeller*
+
+ * Have SSL/TLS server implementation tolerate "mismatched" record
+ protocol version while receiving ClientHello even if the
+ ClientHello is fragmented. (The server can't insist on the
+ particular protocol version it has chosen before the ServerHello
+ message has informed the client about his choice.)
+
+ *Bodo Moeller*
+
+ * Add RFC 3779 support.
+
+ *Rob Austein for ARIN, Ben Laurie*
+
+ * Load error codes if they are not already present instead of using a
+ static variable. This allows them to be cleanly unloaded and reloaded.
+ Improve header file function name parsing.
+
+ *Steve Henson*
+
+ * extend SMTP and IMAP protocol emulation in s_client to use EHLO
+ or CAPABILITY handshake as required by RFCs.
+
+ *Goetz Babin-Ebell*
+
+### Changes between 0.9.8c and 0.9.8d [28 Sep 2006] ###
+
+ * Introduce limits to prevent malicious keys being able to
+ cause a denial of service. (CVE-2006-2940)
+
+ *Steve Henson, Bodo Moeller*
+
+ * Fix ASN.1 parsing of certain invalid structures that can result
+ in a denial of service. (CVE-2006-2937) [Steve Henson]
+
+ * Fix buffer overflow in SSL_get_shared_ciphers() function.
+ (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
+
+ * Fix SSL client code which could crash if connecting to a
+ malicious SSLv2 server. (CVE-2006-4343)
+
+ *Tavis Ormandy and Will Drewry, Google Security Team*
+
+ * Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
+ match only those. Before that, "AES256-SHA" would be interpreted
+ as a pattern and match "AES128-SHA" too (since AES128-SHA got
+ the same strength classification in 0.9.7h) as we currently only
+ have a single AES bit in the ciphersuite description bitmap.
+ That change, however, also applied to ciphersuite strings such as
+ "RC4-MD5" that intentionally matched multiple ciphersuites --
+ namely, SSL 2.0 ciphersuites in addition to the more common ones
+ from SSL 3.0/TLS 1.0.
+
+ So we change the selection algorithm again: Naming an explicit
+ ciphersuite selects this one ciphersuite, and any other similar
+ ciphersuite (same bitmap) from *other* protocol versions.
+ Thus, "RC4-MD5" again will properly select both the SSL 2.0
+ ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
+
+ Since SSL 2.0 does not have any ciphersuites for which the
+ 128/256 bit distinction would be relevant, this works for now.
+ The proper fix will be to use different bits for AES128 and
+ AES256, which would have avoided the problems from the beginning;
+ however, bits are scarce, so we can only do this in a new release
+ (not just a patchlevel) when we can change the SSL_CIPHER
+ definition to split the single 'unsigned long mask' bitmap into
+ multiple values to extend the available space.
+
+
+ *Bodo Moeller*
+
+### Changes between 0.9.8b and 0.9.8c [05 Sep 2006] ###
+
+ * Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
+ (CVE-2006-4339) [Ben Laurie and Google Security Team]
+
+ * Add AES IGE and biIGE modes.
+
+ *Ben Laurie*
+
+ * Change the Unix randomness entropy gathering to use poll() when
+ possible instead of select(), since the latter has some
+ undesirable limitations.
+
+ *Darryl Miles via Richard Levitte and Bodo Moeller*
+
+ * Disable "ECCdraft" ciphersuites more thoroughly. Now special
+ treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
+ cannot be implicitly activated as part of, e.g., the "AES" alias.
+ However, please upgrade to OpenSSL 0.9.9[-dev] for
+ non-experimental use of the ECC ciphersuites to get TLS extension
+ support, which is required for curve and point format negotiation
+ to avoid potential handshake problems.
+
+ *Bodo Moeller*
+
+ * Disable rogue ciphersuites:
+
+ - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
+ - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
+ - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
+
+ The latter two were purportedly from
+ draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
+ appear there.
+
+ Also deactivate the remaining ciphersuites from
+ draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
+ unofficial, and the ID has long expired.
+
+ *Bodo Moeller*
+
+ * Fix RSA blinding Heisenbug (problems sometimes occurred on
+ dual-core machines) and other potential thread-safety issues.
+
+ *Bodo Moeller*
+
+ * Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
+ versions), which is now available for royalty-free use
+ (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
+ Also, add Camellia TLS ciphersuites from RFC 4132.
+
+ To minimize changes between patchlevels in the OpenSSL 0.9.8
+ series, Camellia remains excluded from compilation unless OpenSSL
+ is configured with 'enable-camellia'.
+
+ *NTT*
+
+ * Disable the padding bug check when compression is in use. The padding
+ bug check assumes the first packet is of even length, this is not
+ necessarily true if compression is enabled and can result in false
+ positives causing handshake failure. The actual bug test is ancient
+ code so it is hoped that implementations will either have fixed it by
+ now or any which still have the bug do not support compression.
+
+ *Steve Henson*
+
+### Changes between 0.9.8a and 0.9.8b [04 May 2006] ###
+
+ * When applying a cipher rule check to see if string match is an explicit
+ cipher suite and only match that one cipher suite if it is.
+
+ *Steve Henson*
+
+ * Link in manifests for VC++ if needed.
+
+ *Austin Ziegler <halostatue@gmail.com>*
+
+ * Update support for ECC-based TLS ciphersuites according to
+ draft-ietf-tls-ecc-12.txt with proposed changes (but without
+ TLS extensions, which are supported starting with the 0.9.9
+ branch, not in the OpenSSL 0.9.8 branch).
+
+ *Douglas Stebila*
+
+ * New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
+ opaque EVP_CIPHER_CTX handling.
+
+ *Steve Henson*
+
+ * Fixes and enhancements to zlib compression code. We now only use
+ "zlib1.dll" and use the default __cdecl calling convention on Win32
+ to conform with the standards mentioned here:
+ http://www.zlib.net/DLL_FAQ.txt
+ Static zlib linking now works on Windows and the new --with-zlib-include
+ --with-zlib-lib options to Configure can be used to supply the location
+ of the headers and library. Gracefully handle case where zlib library
+ can't be loaded.
+
+ *Steve Henson*
+
+ * Several fixes and enhancements to the OID generation code. The old code
+ sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
+ handle numbers larger than ULONG_MAX, truncated printing and had a
+ non standard OBJ_obj2txt() behaviour.
+
+ *Steve Henson*
+
+ * Add support for building of engines under engine/ as shared libraries
+ under VC++ build system.
+
+ *Steve Henson*
+
+ * Corrected the numerous bugs in the Win32 path splitter in DSO.
+ Hopefully, we will not see any false combination of paths any more.
+
+ *Richard Levitte*
+
+### Changes between 0.9.8 and 0.9.8a [11 Oct 2005] ###
+
+ * Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
+ (part of SSL_OP_ALL). This option used to disable the
+ countermeasure against man-in-the-middle protocol-version
+ rollback in the SSL 2.0 server implementation, which is a bad
+ idea. (CVE-2005-2969)
+
+ *Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
+ for Information Security, National Institute of Advanced Industrial
+ Science and Technology [AIST*, Japan)]
+
+ * Add two function to clear and return the verify parameter flags.
+
+ *Steve Henson*
+
+ * Keep cipherlists sorted in the source instead of sorting them at
+ runtime, thus removing the need for a lock.
+
+ *Nils Larsch*
+
+ * Avoid some small subgroup attacks in Diffie-Hellman.
+
+ *Nick Mathewson and Ben Laurie*
+
+ * Add functions for well-known primes.
+
+ *Nick Mathewson*
+
+ * Extended Windows CE support.
+
+ *Satoshi Nakamura and Andy Polyakov*
+
+ * Initialize SSL_METHOD structures at compile time instead of during
+ runtime, thus removing the need for a lock.
+
+ *Steve Henson*
+
+ * Make PKCS7_decrypt() work even if no certificate is supplied by
+ attempting to decrypt each encrypted key in turn. Add support to
+ smime utility.
+
+ *Steve Henson*
+
+### Changes between 0.9.7h and 0.9.8 [05 Jul 2005] ###
+
+[NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
+OpenSSL 0.9.8.]
+
+ * Add libcrypto.pc and libssl.pc for those who feel they need them.
+
+ *Richard Levitte*
+
+ * Change CA.sh and CA.pl so they don't bundle the CSR and the private
+ key into the same file any more.
+
+ *Richard Levitte*
+
+ * Add initial support for Win64, both IA64 and AMD64/x64 flavors.
+
+ *Andy Polyakov*
+
+ * Add -utf8 command line and config file option to 'ca'.
+
+ *Stefan <stf@udoma.org*
+
+ * Removed the macro des_crypt(), as it seems to conflict with some
+ libraries. Use DES_crypt().
+
+ *Richard Levitte*
+
+ * Correct naming of the 'chil' and '4758cca' ENGINEs. This
+ involves renaming the source and generated shared-libs for
+ both. The engines will accept the corrected or legacy ids
+ ('ncipher' and '4758_cca' respectively) when binding. NB,
+ this only applies when building 'shared'.
+
+ *Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe*
+
+ * Add attribute functions to EVP_PKEY structure. Modify
+ PKCS12_create() to recognize a CSP name attribute and
+ use it. Make -CSP option work again in pkcs12 utility.
+
+ *Steve Henson*
+
+ * Add new functionality to the bn blinding code:
+ - automatic re-creation of the BN_BLINDING parameters after
+ a fixed number of uses (currently 32)
+ - add new function for parameter creation
+ - introduce flags to control the update behaviour of the
+ BN_BLINDING parameters
+ - hide BN_BLINDING structure
+ Add a second BN_BLINDING slot to the RSA structure to improve
+ performance when a single RSA object is shared among several
+ threads.
+
+ *Nils Larsch*
+
+ * Add support for DTLS.
+
+ *Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie*
+
+ * Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
+ to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
+
+ *Walter Goulet*
+
+ * Remove buggy and incomplete DH cert support from
+ ssl/ssl_rsa.c and ssl/s3_both.c
+
+ *Nils Larsch*
+
+ * Use SHA-1 instead of MD5 as the default digest algorithm for
+ the apps/openssl applications.
+
+ *Nils Larsch*
+
+ * Compile clean with "-Wall -Wmissing-prototypes
+ -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
+ DEBUG_SAFESTACK must also be set.
+
+ *Ben Laurie*
+
+ * Change ./Configure so that certain algorithms can be disabled by default.
+ The new counterpiece to "no-xxx" is "enable-xxx".
+
+ The patented RC5 and MDC2 algorithms will now be disabled unless
+ "enable-rc5" and "enable-mdc2", respectively, are specified.
+
+ (IDEA remains enabled despite being patented. This is because IDEA
+ is frequently required for interoperability, and there is no license
+ fee for non-commercial use. As before, "no-idea" can be used to
+ avoid this algorithm.)
+
+
+ *Bodo Moeller*
+
+ * Add processing of proxy certificates (see RFC 3820). This work was
+ sponsored by KTH (The Royal Institute of Technology in Stockholm) and
+ EGEE (Enabling Grids for E-science in Europe).
+
+ *Richard Levitte*
+
+ * RC4 performance overhaul on modern architectures/implementations, such
+ as Intel P4, IA-64 and AMD64.
+
+ *Andy Polyakov*
+
+ * New utility extract-section.pl. This can be used specify an alternative
+ section number in a pod file instead of having to treat each file as
+ a separate case in Makefile. This can be done by adding two lines to the
+ pod file:
+
+ =for comment openssl_section:XXX
+
+ The blank line is mandatory.
+
+
+ *Steve Henson*
+
+ * New arguments -certform, -keyform and -pass for s_client and s_server
+ to allow alternative format key and certificate files and passphrase
+ sources.
+
+ *Steve Henson*
+
+ * New structure X509_VERIFY_PARAM which combines current verify parameters,
+ update associated structures and add various utility functions.
+
+ Add new policy related verify parameters, include policy checking in
+ standard verify code. Enhance 'smime' application with extra parameters
+ to support policy checking and print out.
+
+ *Steve Henson*
+
+ * Add a new engine to support VIA PadLock ACE extensions in the VIA C3
+ Nehemiah processors. These extensions support AES encryption in hardware
+ as well as RNG (though RNG support is currently disabled).
+
+ *Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov*
+
+ * Deprecate BN_[get|set]_params() functions (they were ignored internally).
+
+ *Geoff Thorpe*
+
+ * New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
+
+ *Andy Polyakov and a number of other people*
+
+ * Improved PowerPC platform support. Most notably BIGNUM assembler
+ implementation contributed by IBM.
+
+ *Suresh Chari, Peter Waltenberg, Andy Polyakov*
+
+ * The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
+ exponent rather than 'unsigned long'. There is a corresponding change to
+ the new 'rsa_keygen' element of the RSA_METHOD structure.
+
+ *Jelte Jansen, Geoff Thorpe*
+
+ * Functionality for creating the initial serial number file is now
+ moved from CA.pl to the 'ca' utility with a new option -create_serial.
+
+ (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
+ number file to 1, which is bound to cause problems. To avoid
+ the problems while respecting compatibility between different 0.9.7
+ patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
+ CA.pl for serial number initialization. With the new release 0.9.8,
+ we can fix the problem directly in the 'ca' utility.)
+
+ *Steve Henson*
+
+ * Reduced header interdependencies by declaring more opaque objects in
+ ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
+ give fewer recursive includes, which could break lazy source code - so
+ this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
+ developers should define this symbol when building and using openssl to
+ ensure they track the recommended behaviour, interfaces, [etc], but
+ backwards-compatible behaviour prevails when this isn't defined.
+
+ *Geoff Thorpe*
+
+ * New function X509_POLICY_NODE_print() which prints out policy nodes.
+
+ *Steve Henson*
+
+ * Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
+ This will generate a random key of the appropriate length based on the
+ cipher context. The EVP_CIPHER can provide its own random key generation
+ routine to support keys of a specific form. This is used in the des and
+ 3des routines to generate a key of the correct parity. Update S/MIME
+ code to use new functions and hence generate correct parity DES keys.
+ Add EVP_CHECK_DES_KEY #define to return an error if the key is not
+ valid (weak or incorrect parity).
+
+ *Steve Henson*
+
+ * Add a local set of CRLs that can be used by X509_verify_cert() as well
+ as looking them up. This is useful when the verified structure may contain
+ CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
+ present unless the new PKCS7_NO_CRL flag is asserted.
+
+ *Steve Henson*
+
+ * Extend ASN1 oid configuration module. It now additionally accepts the
+ syntax:
+
+ shortName = some long name, 1.2.3.4
+
+ *Steve Henson*
+
+ * Reimplemented the BN_CTX implementation. There is now no more static
+ limitation on the number of variables it can handle nor the depth of the
+ "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
+ information can now expand as required, and rather than having a single
+ static array of bignums, BN_CTX now uses a linked-list of such arrays
+ allowing it to expand on demand whilst maintaining the usefulness of
+ BN_CTX's "bundling".
+
+ *Geoff Thorpe*
+
+ * Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
+ to allow all RSA operations to function using a single BN_CTX.
+
+ *Geoff Thorpe*
+
+ * Preliminary support for certificate policy evaluation and checking. This
+ is initially intended to pass the tests outlined in "Conformance Testing
+ of Relying Party Client Certificate Path Processing Logic" v1.07.
+
+ *Steve Henson*
+
+ * bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
+ remained unused and not that useful. A variety of other little bignum
+ tweaks and fixes have also been made continuing on from the audit (see
+ below).
+
+ *Geoff Thorpe*
+
+ * Constify all or almost all d2i, c2i, s2i and r2i functions, along with
+ associated ASN1, EVP and SSL functions and old ASN1 macros.
+
+ *Richard Levitte*
+
+ * BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
+ and this should never fail. So the return value from the use of
+ BN_set_word() (which can fail due to needless expansion) is now deprecated;
+ if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
+
+ *Geoff Thorpe*
+
+ * BN_CTX_get() should return zero-valued bignums, providing the same
+ initialised value as BN_new().
+
+ *Geoff Thorpe, suggested by Ulf Möller*
+
+ * Support for inhibitAnyPolicy certificate extension.
+
+ *Steve Henson*
+
+ * An audit of the BIGNUM code is underway, for which debugging code is
+ enabled when BN_DEBUG is defined. This makes stricter enforcements on what
+ is considered valid when processing BIGNUMs, and causes execution to
+ assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
+ further steps are taken to deliberately pollute unused data in BIGNUM
+ structures to try and expose faulty code further on. For now, openssl will
+ (in its default mode of operation) continue to tolerate the inconsistent
+ forms that it has tolerated in the past, but authors and packagers should
+ consider trying openssl and their own applications when compiled with
+ these debugging symbols defined. It will help highlight potential bugs in
+ their own code, and will improve the test coverage for OpenSSL itself. At
+ some point, these tighter rules will become openssl's default to improve
+ maintainability, though the assert()s and other overheads will remain only
+ in debugging configurations. See bn.h for more details.
+
+ *Geoff Thorpe, Nils Larsch, Ulf Möller*
+
+ * BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
+ that can only be obtained through BN_CTX_new() (which implicitly
+ initialises it). The presence of this function only made it possible
+ to overwrite an existing structure (and cause memory leaks).
+
+ *Geoff Thorpe*
+
+ * Because of the callback-based approach for implementing LHASH as a
+ template type, lh_insert() adds opaque objects to hash-tables and
+ lh_doall() or lh_doall_arg() are typically used with a destructor callback
+ to clean up those corresponding objects before destroying the hash table
+ (and losing the object pointers). So some over-zealous constifications in
+ LHASH have been relaxed so that lh_insert() does not take (nor store) the
+ objects as "const" and the lh_doall[_arg] callback wrappers are not
+ prototyped to have "const" restrictions on the object pointers they are
+ given (and so aren't required to cast them away any more).
+
+ *Geoff Thorpe*
+
+ * The tmdiff.h API was so ugly and minimal that our own timing utility
+ (speed) prefers to use its own implementation. The two implementations
+ haven't been consolidated as yet (volunteers?) but the tmdiff API has had
+ its object type properly exposed (MS_TM) instead of casting to/from "char
+ *". This may still change yet if someone realises MS_TM and "ms_time_***"
+ aren't necessarily the greatest nomenclatures - but this is what was used
+ internally to the implementation so I've used that for now.
+
+ *Geoff Thorpe*
+
+ * Ensure that deprecated functions do not get compiled when
+ OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
+ the self-tests were still using deprecated key-generation functions so
+ these have been updated also.
+
+ *Geoff Thorpe*
+
+ * Reorganise PKCS#7 code to separate the digest location functionality
+ into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
+ New function PKCS7_set_digest() to set the digest type for PKCS#7
+ digestedData type. Add additional code to correctly generate the
+ digestedData type and add support for this type in PKCS7 initialization
+ functions.
+
+ *Steve Henson*
+
+ * New function PKCS7_set0_type_other() this initializes a PKCS7
+ structure of type "other".
+
+ *Steve Henson*
+
+ * Fix prime generation loop in crypto/bn/bn_prime.pl by making
+ sure the loop does correctly stop and breaking ("division by zero")
+ modulus operations are not performed. The (pre-generated) prime
+ table crypto/bn/bn_prime.h was already correct, but it could not be
+ re-generated on some platforms because of the "division by zero"
+ situation in the script.
+
+ *Ralf S. Engelschall*
+
+ * Update support for ECC-based TLS ciphersuites according to
+ draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
+ SHA-1 now is only used for "small" curves (where the
+ representation of a field element takes up to 24 bytes); for
+ larger curves, the field element resulting from ECDH is directly
+ used as premaster secret.
+
+ *Douglas Stebila (Sun Microsystems Laboratories)*
+
+ * Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
+ curve secp160r1 to the tests.
+
+ *Douglas Stebila (Sun Microsystems Laboratories)*
+
+ * Add the possibility to load symbols globally with DSO.
+
+ *Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte*
+
+ * Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
+ control of the error stack.
+
+ *Richard Levitte*
+
+ * Add support for STORE in ENGINE.
+
+ *Richard Levitte*
+
+ * Add the STORE type. The intention is to provide a common interface
+ to certificate and key stores, be they simple file-based stores, or
+ HSM-type store, or LDAP stores, or...
+ NOTE: The code is currently UNTESTED and isn't really used anywhere.
+
+ *Richard Levitte*
+
+ * Add a generic structure called OPENSSL_ITEM. This can be used to
+ pass a list of arguments to any function as well as provide a way
+ for a function to pass data back to the caller.
+
+ *Richard Levitte*
+
+ * Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
+ works like BUF_strdup() but can be used to duplicate a portion of
+ a string. The copy gets NUL-terminated. BUF_memdup() duplicates
+ a memory area.
+
+ *Richard Levitte*
+
+ * Add the function sk_find_ex() which works like sk_find(), but will
+ return an index to an element even if an exact match couldn't be
+ found. The index is guaranteed to point at the element where the
+ searched-for key would be inserted to preserve sorting order.
+
+ *Richard Levitte*
+
+ * Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
+ takes an extra flags argument for optional functionality. Currently,
+ the following flags are defined:
+
+ OBJ_BSEARCH_VALUE_ON_NOMATCH
+ This one gets OBJ_bsearch_ex() to return a pointer to the first
+ element where the comparing function returns a negative or zero
+ number.
+
+ OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
+ This one gets OBJ_bsearch_ex() to return a pointer to the first
+ element where the comparing function returns zero. This is useful
+ if there are more than one element where the comparing function
+ returns zero.
+
+ *Richard Levitte*
+
+ * Make it possible to create self-signed certificates with 'openssl ca'
+ in such a way that the self-signed certificate becomes part of the
+ CA database and uses the same mechanisms for serial number generation
+ as all other certificate signing. The new flag '-selfsign' enables
+ this functionality. Adapt CA.sh and CA.pl.in.
+
+ *Richard Levitte*
+
+ * Add functionality to check the public key of a certificate request
+ against a given private. This is useful to check that a certificate
+ request can be signed by that key (self-signing).
+
+ *Richard Levitte*
+
+ * Make it possible to have multiple active certificates with the same
+ subject in the CA index file. This is done only if the keyword
+ 'unique_subject' is set to 'no' in the main CA section (default
+ if 'CA_default') of the configuration file. The value is saved
+ with the database itself in a separate index attribute file,
+ named like the index file with '.attr' appended to the name.
+
+ *Richard Levitte*
+
+ * Generate multi-valued AVAs using '+' notation in config files for
+ req and dirName.
+
+ *Steve Henson*
+
+ * Support for nameConstraints certificate extension.
+
+ *Steve Henson*
+
+ * Support for policyConstraints certificate extension.
+
+ *Steve Henson*
+
+ * Support for policyMappings certificate extension.
+
+ *Steve Henson*
+
+ * Make sure the default DSA_METHOD implementation only uses its
+ dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
+ and change its own handlers to be NULL so as to remove unnecessary
+ indirection. This lets alternative implementations fallback to the
+ default implementation more easily.
+
+ *Geoff Thorpe*
+
+ * Support for directoryName in GeneralName related extensions
+ in config files.
+
+ *Steve Henson*
+
+ * Make it possible to link applications using Makefile.shared.
+ Make that possible even when linking against static libraries!
+
+ *Richard Levitte*
+
+ * Support for single pass processing for S/MIME signing. This now
+ means that S/MIME signing can be done from a pipe, in addition
+ cleartext signing (multipart/signed type) is effectively streaming
+ and the signed data does not need to be all held in memory.
+
+ This is done with a new flag PKCS7_STREAM. When this flag is set
+ PKCS7_sign() only initializes the PKCS7 structure and the actual signing
+ is done after the data is output (and digests calculated) in
+ SMIME_write_PKCS7().
+
+ *Steve Henson*
+
+ * Add full support for -rpath/-R, both in shared libraries and
+ applications, at least on the platforms where it's known how
+ to do it.
+
+ *Richard Levitte*
+
+ * In crypto/ec/ec_mult.c, implement fast point multiplication with
+ precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
+ will now compute a table of multiples of the generator that
+ makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
+ faster (notably in the case of a single point multiplication,
+ scalar * generator).
+
+ *Nils Larsch, Bodo Moeller*
+
+ * IPv6 support for certificate extensions. The various extensions
+ which use the IP:a.b.c.d can now take IPv6 addresses using the
+ formats of RFC1884 2.2 . IPv6 addresses are now also displayed
+ correctly.
+
+ *Steve Henson*
+
+ * Added an ENGINE that implements RSA by performing private key
+ exponentiations with the GMP library. The conversions to and from
+ GMP's mpz_t format aren't optimised nor are any montgomery forms
+ cached, and on x86 it appears OpenSSL's own performance has caught up.
+ However there are likely to be other architectures where GMP could
+ provide a boost. This ENGINE is not built in by default, but it can be
+ specified at Configure time and should be accompanied by the necessary
+ linker additions, eg;
+ ./config -DOPENSSL_USE_GMP -lgmp
+
+ *Geoff Thorpe*
+
+ * "openssl engine" will not display ENGINE/DSO load failure errors when
+ testing availability of engines with "-t" - the old behaviour is
+ produced by increasing the feature's verbosity with "-tt".
+
+ *Geoff Thorpe*
+
+ * ECDSA routines: under certain error conditions uninitialized BN objects
+ could be freed. Solution: make sure initialization is performed early
+ enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
+ via PR#459)
+
+ *Lutz Jaenicke*
+
+ * Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
+ and DH_METHOD (eg. by ENGINE implementations) to override the normal
+ software implementations. For DSA and DH, parameter generation can
+ also be overridden by providing the appropriate method callbacks.
+
+ *Geoff Thorpe*
+
+ * Change the "progress" mechanism used in key-generation and
+ primality testing to functions that take a new BN_GENCB pointer in
+ place of callback/argument pairs. The new API functions have "_ex"
+ postfixes and the older functions are reimplemented as wrappers for
+ the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
+ declarations of the old functions to help (graceful) attempts to
+ migrate to the new functions. Also, the new key-generation API
+ functions operate on a caller-supplied key-structure and return
+ success/failure rather than returning a key or NULL - this is to
+ help make "keygen" another member function of RSA_METHOD etc.
+
+ Example for using the new callback interface:
+
+ int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
+ void *my_arg = ...;
+ BN_GENCB my_cb;
+
+ BN_GENCB_set(&my_cb, my_callback, my_arg);
+
+ return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
+ /* For the meaning of a, b in calls to my_callback(), see the
+ * documentation of the function that calls the callback.
+ * cb will point to my_cb; my_arg can be retrieved as cb->arg.
+ * my_callback should return 1 if it wants BN_is_prime_ex()
+ * to continue, or 0 to stop.
+ */
+
+ *Geoff Thorpe*
+
+ * Change the ZLIB compression method to be stateful, and make it
+ available to TLS with the number defined in
+ draft-ietf-tls-compression-04.txt.
+
+ *Richard Levitte*
+
+ * Add the ASN.1 structures and functions for CertificatePair, which
+ is defined as follows (according to X.509_4thEditionDraftV6.pdf):
+
+ CertificatePair ::= SEQUENCE {
+ forward [0] Certificate OPTIONAL,
+ reverse [1] Certificate OPTIONAL,
+ -- at least one of the pair shall be present -- }
+
+ Also implement the PEM functions to read and write certificate
+ pairs, and defined the PEM tag as "CERTIFICATE PAIR".
+
+ This needed to be defined, mostly for the sake of the LDAP
+ attribute crossCertificatePair, but may prove useful elsewhere as
+ well.
+
+ *Richard Levitte*
+
+ * Make it possible to inhibit symlinking of shared libraries in
+ Makefile.shared, for Cygwin's sake.
+
+ *Richard Levitte*
+
+ * Extend the BIGNUM API by creating a function
+ void BN_set_negative(BIGNUM *a, int neg);
+ and a macro that behave like
+ int BN_is_negative(const BIGNUM *a);
+
+ to avoid the need to access 'a->neg' directly in applications.
+
+ *Nils Larsch*
+
+ * Implement fast modular reduction for pseudo-Mersenne primes
+ used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
+ EC_GROUP_new_curve_GFp() will now automatically use this
+ if applicable.
+
+ *Nils Larsch <nla@trustcenter.de>*
+
+ * Add new lock type (CRYPTO_LOCK_BN).
+
+ *Bodo Moeller*
+
+ * Change the ENGINE framework to automatically load engines
+ dynamically from specific directories unless they could be
+ found to already be built in or loaded. Move all the
+ current engines except for the cryptodev one to a new
+ directory engines/.
+ The engines in engines/ are built as shared libraries if
+ the "shared" options was given to ./Configure or ./config.
+ Otherwise, they are inserted in libcrypto.a.
+ /usr/local/ssl/engines is the default directory for dynamic
+ engines, but that can be overridden at configure time through
+ the usual use of --prefix and/or --openssldir, and at run
+ time with the environment variable OPENSSL_ENGINES.
+
+ *Geoff Thorpe and Richard Levitte*
+
+ * Add Makefile.shared, a helper makefile to build shared
+ libraries. Adapt Makefile.org.
+
+ *Richard Levitte*
+
+ * Add version info to Win32 DLLs.
+
+ *Peter 'Luna' Runestig" <peter@runestig.com>*
+
+ * Add new 'medium level' PKCS#12 API. Certificates and keys
+ can be added using this API to created arbitrary PKCS#12
+ files while avoiding the low level API.
+
+ New options to PKCS12_create(), key or cert can be NULL and
+ will then be omitted from the output file. The encryption
+ algorithm NIDs can be set to -1 for no encryption, the mac
+ iteration count can be set to 0 to omit the mac.
+
+ Enhance pkcs12 utility by making the -nokeys and -nocerts
+ options work when creating a PKCS#12 file. New option -nomac
+ to omit the mac, NONE can be set for an encryption algorithm.
+ New code is modified to use the enhanced PKCS12_create()
+ instead of the low level API.
+
+ *Steve Henson*
+
+ * Extend ASN1 encoder to support indefinite length constructed
+ encoding. This can output sequences tags and octet strings in
+ this form. Modify pk7_asn1.c to support indefinite length
+ encoding. This is experimental and needs additional code to
+ be useful, such as an ASN1 bio and some enhanced streaming
+ PKCS#7 code.
+
+ Extend template encode functionality so that tagging is passed
+ down to the template encoder.
+
+ *Steve Henson*
+
+ * Let 'openssl req' fail if an argument to '-newkey' is not
+ recognized instead of using RSA as a default.
+
+ *Bodo Moeller*
+
+ * Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
+ As these are not official, they are not included in "ALL";
+ the "ECCdraft" ciphersuite group alias can be used to select them.
+
+ *Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)*
+
+ * Add ECDH engine support.
+
+ *Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)*
+
+ * Add ECDH in new directory crypto/ecdh/.
+
+ *Douglas Stebila (Sun Microsystems Laboratories)*
+
+ * Let BN_rand_range() abort with an error after 100 iterations
+ without success (which indicates a broken PRNG).
+
+ *Bodo Moeller*
+
+ * Change BN_mod_sqrt() so that it verifies that the input value
+ is really the square of the return value. (Previously,
+ BN_mod_sqrt would show GIGO behaviour.)
+
+ *Bodo Moeller*
+
+ * Add named elliptic curves over binary fields from X9.62, SECG,
+ and WAP/WTLS; add OIDs that were still missing.
+
+ *Sheueling Chang Shantz and Douglas Stebila
+ (Sun Microsystems Laboratories)*
+
+ * Extend the EC library for elliptic curves over binary fields
+ (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
+ New EC_METHOD:
+
+ EC_GF2m_simple_method
+
+ New API functions:
+
+ EC_GROUP_new_curve_GF2m
+ EC_GROUP_set_curve_GF2m
+ EC_GROUP_get_curve_GF2m
+ EC_POINT_set_affine_coordinates_GF2m
+ EC_POINT_get_affine_coordinates_GF2m
+ EC_POINT_set_compressed_coordinates_GF2m
+
+ Point compression for binary fields is disabled by default for
+ patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
+ enable it).
+
+ As binary polynomials are represented as BIGNUMs, various members
+ of the EC_GROUP and EC_POINT data structures can be shared
+ between the implementations for prime fields and binary fields;
+ the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
+ are essentially identical to their ..._GFp counterparts.
+ (For simplicity, the '..._GFp' prefix has been dropped from
+ various internal method names.)
+
+ An internal 'field_div' method (similar to 'field_mul' and
+ 'field_sqr') has been added; this is used only for binary fields.
+
+ *Sheueling Chang Shantz and Douglas Stebila
+ (Sun Microsystems Laboratories)*
+
+ * Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
+ through methods ('mul', 'precompute_mult').
+
+ The generic implementations (now internally called 'ec_wNAF_mul'
+ and 'ec_wNAF_precomputed_mult') remain the default if these
+ methods are undefined.
+
+ *Sheueling Chang Shantz and Douglas Stebila
+ (Sun Microsystems Laboratories)*
+
+ * New function EC_GROUP_get_degree, which is defined through
+ EC_METHOD. For curves over prime fields, this returns the bit
+ length of the modulus.
+
+ *Sheueling Chang Shantz and Douglas Stebila
+ (Sun Microsystems Laboratories)*
+
+ * New functions EC_GROUP_dup, EC_POINT_dup.
+ (These simply call ..._new and ..._copy).
+
+ *Sheueling Chang Shantz and Douglas Stebila
+ (Sun Microsystems Laboratories)*
+
+ * Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
+ Polynomials are represented as BIGNUMs (where the sign bit is not
+ used) in the following functions [macros]:
+
+ BN_GF2m_add
+ BN_GF2m_sub [= BN_GF2m_add]
+ BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
+ BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
+ BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
+ BN_GF2m_mod_inv
+ BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
+ BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
+ BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
+ BN_GF2m_cmp [= BN_ucmp]
+
+ (Note that only the 'mod' functions are actually for fields GF(2^m).
+ BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
+
+ For some functions, an the irreducible polynomial defining a
+ field can be given as an 'unsigned int[]' with strictly
+ decreasing elements giving the indices of those bits that are set;
+ i.e., p[] represents the polynomial
+ f(t) = t^p[0] + t^p[1] + ... + t^p[k]
+ where
+ p[0] > p[1] > ... > p[k] = 0.
+ This applies to the following functions:
+
+ BN_GF2m_mod_arr
+ BN_GF2m_mod_mul_arr
+ BN_GF2m_mod_sqr_arr
+ BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
+ BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
+ BN_GF2m_mod_exp_arr
+ BN_GF2m_mod_sqrt_arr
+ BN_GF2m_mod_solve_quad_arr
+ BN_GF2m_poly2arr
+ BN_GF2m_arr2poly
+
+ Conversion can be performed by the following functions:
+
+ BN_GF2m_poly2arr
+ BN_GF2m_arr2poly
+
+ bntest.c has additional tests for binary polynomial arithmetic.
+
+ Two implementations for BN_GF2m_mod_div() are available.
+ The default algorithm simply uses BN_GF2m_mod_inv() and
+ BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
+ if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
+ copyright notice in crypto/bn/bn_gf2m.c before enabling it).
+
+ *Sheueling Chang Shantz and Douglas Stebila
+ (Sun Microsystems Laboratories)*
+
+ * Add new error code 'ERR_R_DISABLED' that can be used when some
+ functionality is disabled at compile-time.
+
+ *Douglas Stebila <douglas.stebila@sun.com>*
+
+ * Change default behaviour of 'openssl asn1parse' so that more
+ information is visible when viewing, e.g., a certificate:
+
+ Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
+ mode the content of non-printable OCTET STRINGs is output in a
+ style similar to INTEGERs, but with '[HEX DUMP]' prepended to
+ avoid the appearance of a printable string.
+
+ *Nils Larsch <nla@trustcenter.de>*
+
+ * Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
+ functions
+ EC_GROUP_set_asn1_flag()
+ EC_GROUP_get_asn1_flag()
+ EC_GROUP_set_point_conversion_form()
+ EC_GROUP_get_point_conversion_form()
+ These control ASN1 encoding details:
+ - Curves (i.e., groups) are encoded explicitly unless asn1_flag
+ has been set to OPENSSL_EC_NAMED_CURVE.
+ - Points are encoded in uncompressed form by default; options for
+ asn1_for are as for point2oct, namely
+ POINT_CONVERSION_COMPRESSED
+ POINT_CONVERSION_UNCOMPRESSED
+ POINT_CONVERSION_HYBRID
+
+ Also add 'seed' and 'seed_len' members to EC_GROUP with access
+ functions
+ EC_GROUP_set_seed()
+ EC_GROUP_get0_seed()
+ EC_GROUP_get_seed_len()
+ This is used only for ASN1 purposes (so far).
+
+ *Nils Larsch <nla@trustcenter.de>*
+
+ * Add 'field_type' member to EC_METHOD, which holds the NID
+ of the appropriate field type OID. The new function
+ EC_METHOD_get_field_type() returns this value.
+
+ *Nils Larsch <nla@trustcenter.de>*
+
+ * Add functions
+ EC_POINT_point2bn()
+ EC_POINT_bn2point()
+ EC_POINT_point2hex()
+ EC_POINT_hex2point()
+ providing useful interfaces to EC_POINT_point2oct() and
+ EC_POINT_oct2point().
+
+ *Nils Larsch <nla@trustcenter.de>*
+
+ * Change internals of the EC library so that the functions
+ EC_GROUP_set_generator()
+ EC_GROUP_get_generator()
+ EC_GROUP_get_order()
+ EC_GROUP_get_cofactor()
+ are implemented directly in crypto/ec/ec_lib.c and not dispatched
+ to methods, which would lead to unnecessary code duplication when
+ adding different types of curves.
+
+ *Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller*
+
+ * Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
+ arithmetic, and such that modified wNAFs are generated
+ (which avoid length expansion in many cases).
+
+ *Bodo Moeller*
+
+ * Add a function EC_GROUP_check_discriminant() (defined via
+ EC_METHOD) that verifies that the curve discriminant is non-zero.
+
+ Add a function EC_GROUP_check() that makes some sanity tests
+ on a EC_GROUP, its generator and order. This includes
+ EC_GROUP_check_discriminant().
+
+ *Nils Larsch <nla@trustcenter.de>*
+
+ * Add ECDSA in new directory crypto/ecdsa/.
+
+ Add applications 'openssl ecparam' and 'openssl ecdsa'
+ (these are based on 'openssl dsaparam' and 'openssl dsa').
+
+ ECDSA support is also included in various other files across the
+ library. Most notably,
+ - 'openssl req' now has a '-newkey ecdsa:file' option;
+ - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
+ - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
+ d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
+ them suitable for ECDSA where domain parameters must be
+ extracted before the specific public key;
+ - ECDSA engine support has been added.
+
+ *Nils Larsch <nla@trustcenter.de>*
+
+ * Include some named elliptic curves, and add OIDs from X9.62,
+ SECG, and WAP/WTLS. Each curve can be obtained from the new
+ function
+ EC_GROUP_new_by_curve_name(),
+ and the list of available named curves can be obtained with
+ EC_get_builtin_curves().
+ Also add a 'curve_name' member to EC_GROUP objects, which can be
+ accessed via
+ EC_GROUP_set_curve_name()
+ EC_GROUP_get_curve_name()
+
+ *Nils Larsch <larsch@trustcenter.de, Bodo Moeller*
+
+ * Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
+ was actually never needed) and in BN_mul(). The removal in BN_mul()
+ required a small change in bn_mul_part_recursive() and the addition
+ of the functions bn_cmp_part_words(), bn_sub_part_words() and
+ bn_add_part_words(), which do the same thing as bn_cmp_words(),
+ bn_sub_words() and bn_add_words() except they take arrays with
+ differing sizes.
+
+ *Richard Levitte*
+
+### Changes between 0.9.7l and 0.9.7m [23 Feb 2007] ###
+
+ * Cleanse PEM buffers before freeing them since they may contain
+ sensitive data.
+
+ *Benjamin Bennett <ben@psc.edu>*
+
+ * Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
+ a ciphersuite string such as "DEFAULT:RSA" cannot enable
+ authentication-only ciphersuites.
+
+ *Bodo Moeller*
+
+ * Since AES128 and AES256 share a single mask bit in the logic of
+ ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
+ kludge to work properly if AES128 is available and AES256 isn't.
+
+ *Victor Duchovni*
+
+ * Expand security boundary to match 1.1.1 module.
+
+ *Steve Henson*
+
+ * Remove redundant features: hash file source, editing of test vectors
+ modify fipsld to use external fips_premain.c signature.
+
+ *Steve Henson*
+
+ * New perl script mkfipsscr.pl to create shell scripts or batch files to
+ run algorithm test programs.
+
+ *Steve Henson*
+
+ * Make algorithm test programs more tolerant of whitespace.
+
+ *Steve Henson*
+
+ * Have SSL/TLS server implementation tolerate "mismatched" record
+ protocol version while receiving ClientHello even if the
+ ClientHello is fragmented. (The server can't insist on the
+ particular protocol version it has chosen before the ServerHello
+ message has informed the client about his choice.)
+
+ *Bodo Moeller*
+
+ * Load error codes if they are not already present instead of using a
+ static variable. This allows them to be cleanly unloaded and reloaded.
+
+ *Steve Henson*
+
+### Changes between 0.9.7k and 0.9.7l [28 Sep 2006] ###
+
+ * Introduce limits to prevent malicious keys being able to
+ cause a denial of service. (CVE-2006-2940)
+
+ *Steve Henson, Bodo Moeller*
+
+ * Fix ASN.1 parsing of certain invalid structures that can result
+ in a denial of service. (CVE-2006-2937) [Steve Henson]
+
+ * Fix buffer overflow in SSL_get_shared_ciphers() function.
+ (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
+
+ * Fix SSL client code which could crash if connecting to a
+ malicious SSLv2 server. (CVE-2006-4343)
+
+ *Tavis Ormandy and Will Drewry, Google Security Team*
+
+ * Change ciphersuite string processing so that an explicit
+ ciphersuite selects this one ciphersuite (so that "AES256-SHA"
+ will no longer include "AES128-SHA"), and any other similar
+ ciphersuite (same bitmap) from *other* protocol versions (so that
+ "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
+ SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
+ changes from 0.9.8b and 0.9.8d.
+
+ *Bodo Moeller*
+
+### Changes between 0.9.7j and 0.9.7k [05 Sep 2006] ###
+
+ * Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
+ (CVE-2006-4339) [Ben Laurie and Google Security Team]
+
+ * Change the Unix randomness entropy gathering to use poll() when
+ possible instead of select(), since the latter has some
+ undesirable limitations.
+
+ *Darryl Miles via Richard Levitte and Bodo Moeller*
+
+ * Disable rogue ciphersuites:
+
+ - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
+ - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
+ - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
+
+ The latter two were purportedly from
+ draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
+ appear there.
+
+ Also deactivate the remaining ciphersuites from
+ draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
+ unofficial, and the ID has long expired.
+
+ *Bodo Moeller*
+
+ * Fix RSA blinding Heisenbug (problems sometimes occurred on
+ dual-core machines) and other potential thread-safety issues.
+
+ *Bodo Moeller*
+
+### Changes between 0.9.7i and 0.9.7j [04 May 2006] ###
+
+ * Adapt fipsld and the build system to link against the validated FIPS
+ module in FIPS mode.
+
+ *Steve Henson*
+
+ * Fixes for VC++ 2005 build under Windows.
+
+ *Steve Henson*
+
+ * Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
+ from a Windows bash shell such as MSYS. It is autodetected from the
+ "config" script when run from a VC++ environment. Modify standard VC++
+ build to use fipscanister.o from the GNU make build.
+
+ *Steve Henson*
+
+### Changes between 0.9.7h and 0.9.7i [14 Oct 2005] ###
+
+ * Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
+ The value now differs depending on if you build for FIPS or not.
+ BEWARE! A program linked with a shared FIPSed libcrypto can't be
+ safely run with a non-FIPSed libcrypto, as it may crash because of
+ the difference induced by this change.
+
+ *Andy Polyakov*
+
+### Changes between 0.9.7g and 0.9.7h [11 Oct 2005] ###
+
+ * Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
+ (part of SSL_OP_ALL). This option used to disable the
+ countermeasure against man-in-the-middle protocol-version
+ rollback in the SSL 2.0 server implementation, which is a bad
+ idea. (CVE-2005-2969)
+
+ *Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
+ for Information Security, National Institute of Advanced Industrial
+ Science and Technology [AIST*, Japan)]
+
+ * Minimal support for X9.31 signatures and PSS padding modes. This is
+ mainly for FIPS compliance and not fully integrated at this stage.
+
+ *Steve Henson*
+
+ * For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
+ the exponentiation using a fixed-length exponent. (Otherwise,
+ the information leaked through timing could expose the secret key
+ after many signatures; cf. Bleichenbacher's attack on DSA with
+ biased k.)
+
+ *Bodo Moeller*
+
+ * Make a new fixed-window mod_exp implementation the default for
+ RSA, DSA, and DH private-key operations so that the sequence of
+ squares and multiplies and the memory access pattern are
+ independent of the particular secret key. This will mitigate
+ cache-timing and potential related attacks.
+
+ BN_mod_exp_mont_consttime() is the new exponentiation implementation,
+ and this is automatically used by BN_mod_exp_mont() if the new flag
+ BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
+ will use this BN flag for private exponents unless the flag
+ RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
+ DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
+
+
+ *Matthew D Wood (Intel Corp), with some changes by Bodo Moeller*
+
+ * Change the client implementation for SSLv23_method() and
+ SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
+ Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
+ (Previously, the SSL 2.0 backwards compatible Client Hello
+ message format would be used even with SSL_OP_NO_SSLv2.)
+
+ *Bodo Moeller*
+
+ * Add support for smime-type MIME parameter in S/MIME messages which some
+ clients need.
+
+ *Steve Henson*
+
+ * New function BN_MONT_CTX_set_locked() to set montgomery parameters in
+ a threadsafe manner. Modify rsa code to use new function and add calls
+ to dsa and dh code (which had race conditions before).
+
+ *Steve Henson*
+
+ * Include the fixed error library code in the C error file definitions
+ instead of fixing them up at runtime. This keeps the error code
+ structures constant.
+
+ *Steve Henson*
+
+### Changes between 0.9.7f and 0.9.7g [11 Apr 2005] ###
+
+[NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
+OpenSSL 0.9.8.]
+
+ * Fixes for newer kerberos headers. NB: the casts are needed because
+ the 'length' field is signed on one version and unsigned on another
+ with no (?) obvious way to tell the difference, without these VC++
+ complains. Also the "definition" of FAR (blank) is no longer included
+ nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
+ some needed definitions.
+
+ *Steve Henson*
+
+ * Undo Cygwin change.
+
+ *Ulf Möller*
+
+ * Added support for proxy certificates according to RFC 3820.
+ Because they may be a security thread to unaware applications,
+ they must be explicitly allowed in run-time. See
+ docs/HOWTO/proxy_certificates.txt for further information.
+
+ *Richard Levitte*
+
+### Changes between 0.9.7e and 0.9.7f [22 Mar 2005] ###
+
+ * Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
+ server and client random values. Previously
+ (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
+ less random data when sizeof(time_t) > 4 (some 64 bit platforms).
+
+ This change has negligible security impact because:
+
+ 1. Server and client random values still have 24 bytes of pseudo random
+ data.
+
+ 2. Server and client random values are sent in the clear in the initial
+ handshake.
+
+ 3. The master secret is derived using the premaster secret (48 bytes in
+ size for static RSA ciphersuites) as well as client server and random
+ values.
+
+ The OpenSSL team would like to thank the UK NISCC for bringing this issue
+ to our attention.
+
+ *Stephen Henson, reported by UK NISCC*
+
+ * Use Windows randomness collection on Cygwin.
+
+ *Ulf Möller*
+
+ * Fix hang in EGD/PRNGD query when communication socket is closed
+ prematurely by EGD/PRNGD.
+
+ *Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014*
+
+ * Prompt for pass phrases when appropriate for PKCS12 input format.
+
+ *Steve Henson*
+
+ * Back-port of selected performance improvements from development
+ branch, as well as improved support for PowerPC platforms.
+
+ *Andy Polyakov*
+
+ * Add lots of checks for memory allocation failure, error codes to indicate
+ failure and freeing up memory if a failure occurs.
+
+ *Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson*
+
+ * Add new -passin argument to dgst.
+
+ *Steve Henson*
+
+ * Perform some character comparisons of different types in X509_NAME_cmp:
+ this is needed for some certificates that re-encode DNs into UTF8Strings
+ (in violation of RFC3280) and can't or won't issue name rollover
+ certificates.
+
+ *Steve Henson*
+
+ * Make an explicit check during certificate validation to see that
+ the CA setting in each certificate on the chain is correct. As a
+ side effect always do the following basic checks on extensions,
+ not just when there's an associated purpose to the check:
+
+ - if there is an unhandled critical extension (unless the user
+ has chosen to ignore this fault)
+ - if the path length has been exceeded (if one is set at all)
+ - that certain extensions fit the associated purpose (if one has
+ been given)
+
+ *Richard Levitte*
+
+### Changes between 0.9.7d and 0.9.7e [25 Oct 2004] ###
+
+ * Avoid a race condition when CRLs are checked in a multi threaded
+ environment. This would happen due to the reordering of the revoked
+ entries during signature checking and serial number lookup. Now the
+ encoding is cached and the serial number sort performed under a lock.
+ Add new STACK function sk_is_sorted().
+
+ *Steve Henson*
+
+ * Add Delta CRL to the extension code.
+
+ *Steve Henson*
+
+ * Various fixes to s3_pkt.c so alerts are sent properly.
+
+ *David Holmes <d.holmes@f5.com>*
+
+ * Reduce the chances of duplicate issuer name and serial numbers (in
+ violation of RFC3280) using the OpenSSL certificate creation utilities.
+ This is done by creating a random 64 bit value for the initial serial
+ number when a serial number file is created or when a self signed
+ certificate is created using 'openssl req -x509'. The initial serial
+ number file is created using 'openssl x509 -next_serial' in CA.pl
+ rather than being initialized to 1.
+
+ *Steve Henson*
+
+### Changes between 0.9.7c and 0.9.7d [17 Mar 2004] ###
+
+ * Fix null-pointer assignment in do_change_cipher_spec() revealed
+ by using the Codenomicon TLS Test Tool (CVE-2004-0079)
+
+ *Joe Orton, Steve Henson*
+
+ * Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
+ (CVE-2004-0112)
+
+ *Joe Orton, Steve Henson*
+
+ * Make it possible to have multiple active certificates with the same
+ subject in the CA index file. This is done only if the keyword
+ 'unique_subject' is set to 'no' in the main CA section (default
+ if 'CA_default') of the configuration file. The value is saved
+ with the database itself in a separate index attribute file,
+ named like the index file with '.attr' appended to the name.
+
+ *Richard Levitte*
+
+ * X509 verify fixes. Disable broken certificate workarounds when
+ X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
+ keyUsage extension present. Don't accept CRLs with unhandled critical
+ extensions: since verify currently doesn't process CRL extensions this
+ rejects a CRL with *any* critical extensions. Add new verify error codes
+ for these cases.
+
+ *Steve Henson*
+
+ * When creating an OCSP nonce use an OCTET STRING inside the extnValue.
+ A clarification of RFC2560 will require the use of OCTET STRINGs and
+ some implementations cannot handle the current raw format. Since OpenSSL
+ copies and compares OCSP nonces as opaque blobs without any attempt at
+ parsing them this should not create any compatibility issues.
+
+ *Steve Henson*
+
+ * New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
+ calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
+ this HMAC (and other) operations are several times slower than OpenSSL
+ < 0.9.7.
+
+ *Steve Henson*
+
+ * Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
+
+ *Peter Sylvester <Peter.Sylvester@EdelWeb.fr>*
+
+ * Use the correct content when signing type "other".
+
+ *Steve Henson*
+
+### Changes between 0.9.7b and 0.9.7c [30 Sep 2003] ###
+
+ * Fix various bugs revealed by running the NISCC test suite:
+
+ Stop out of bounds reads in the ASN1 code when presented with
+ invalid tags (CVE-2003-0543 and CVE-2003-0544).
+
+ Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
+
+ If verify callback ignores invalid public key errors don't try to check
+ certificate signature with the NULL public key.
+
+
+ *Steve Henson*
+
+ * New -ignore_err option in ocsp application to stop the server
+ exiting on the first error in a request.
+
+ *Steve Henson*
+
+ * In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
+ if the server requested one: as stated in TLS 1.0 and SSL 3.0
+ specifications.
+
+ *Steve Henson*
+
+ * In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
+ extra data after the compression methods not only for TLS 1.0
+ but also for SSL 3.0 (as required by the specification).
+
+ *Bodo Moeller; problem pointed out by Matthias Loepfe*
+
+ * Change X509_certificate_type() to mark the key as exported/exportable
+ when it's 512 *bits* long, not 512 bytes.
+
+ *Richard Levitte*
+
+ * Change AES_cbc_encrypt() so it outputs exact multiple of
+ blocks during encryption.
+
+ *Richard Levitte*
+
+ * Various fixes to base64 BIO and non blocking I/O. On write
+ flushes were not handled properly if the BIO retried. On read
+ data was not being buffered properly and had various logic bugs.
+ This also affects blocking I/O when the data being decoded is a
+ certain size.
+
+ *Steve Henson*
+
+ * Various S/MIME bugfixes and compatibility changes:
+ output correct application/pkcs7 MIME type if
+ PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
+ Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
+ of files as .eml work). Correctly handle very long lines in MIME
+ parser.
+
+ *Steve Henson*
+
+### Changes between 0.9.7a and 0.9.7b [10 Apr 2003] ###
+
+ * Countermeasure against the Klima-Pokorny-Rosa extension of
+ Bleichbacher's attack on PKCS #1 v1.5 padding: treat
+ a protocol version number mismatch like a decryption error
+ in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
+
+ *Bodo Moeller*
+
+ * Turn on RSA blinding by default in the default implementation
+ to avoid a timing attack. Applications that don't want it can call
+ RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
+ They would be ill-advised to do so in most cases.
+
+ *Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller*
+
+ * Change RSA blinding code so that it works when the PRNG is not
+ seeded (in this case, the secret RSA exponent is abused as
+ an unpredictable seed -- if it is not unpredictable, there
+ is no point in blinding anyway). Make RSA blinding thread-safe
+ by remembering the creator's thread ID in rsa->blinding and
+ having all other threads use local one-time blinding factors
+ (this requires more computation than sharing rsa->blinding, but
+ avoids excessive locking; and if an RSA object is not shared
+ between threads, blinding will still be very fast).
+
+ *Bodo Moeller*
+
+ * Fixed a typo bug that would cause ENGINE_set_default() to set an
+ ENGINE as defaults for all supported algorithms irrespective of
+ the 'flags' parameter. 'flags' is now honoured, so applications
+ should make sure they are passing it correctly.
+
+ *Geoff Thorpe*
+
+ * Target "mingw" now allows native Windows code to be generated in
+ the Cygwin environment as well as with the MinGW compiler.
+
+ *Ulf Moeller*
+
+### Changes between 0.9.7 and 0.9.7a [19 Feb 2003] ###
+
+ * In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
+ via timing by performing a MAC computation even if incorrect
+ block cipher padding has been found. This is a countermeasure
+ against active attacks where the attacker has to distinguish
+ between bad padding and a MAC verification error. (CVE-2003-0078)
+
+ *Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
+ Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
+ Martin Vuagnoux (EPFL, Ilion)*
+
+ * Make the no-err option work as intended. The intention with no-err
+ is not to have the whole error stack handling routines removed from
+ libcrypto, it's only intended to remove all the function name and
+ reason texts, thereby removing some of the footprint that may not
+ be interesting if those errors aren't displayed anyway.
+
+ NOTE: it's still possible for any application or module to have its
+ own set of error texts inserted. The routines are there, just not
+ used by default when no-err is given.
+
+ *Richard Levitte*
+
+ * Add support for FreeBSD on IA64.
+
+ *dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454*
+
+ * Adjust DES_cbc_cksum() so it returns the same value as the MIT
+ Kerberos function mit_des_cbc_cksum(). Before this change,
+ the value returned by DES_cbc_cksum() was like the one from
+ mit_des_cbc_cksum(), except the bytes were swapped.
+
+ *Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte*
+
+ * Allow an application to disable the automatic SSL chain building.
+ Before this a rather primitive chain build was always performed in
+ ssl3_output_cert_chain(): an application had no way to send the
+ correct chain if the automatic operation produced an incorrect result.
+
+ Now the chain builder is disabled if either:
+
+ 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
+
+ 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
+
+ The reasoning behind this is that an application would not want the
+ auto chain building to take place if extra chain certificates are
+ present and it might also want a means of sending no additional
+ certificates (for example the chain has two certificates and the
+ root is omitted).
+
+ *Steve Henson*
+
+ * Add the possibility to build without the ENGINE framework.
+
+ *Steven Reddie <smr@essemer.com.au> via Richard Levitte*
+
+ * Under Win32 gmtime() can return NULL: check return value in
+ OPENSSL_gmtime(). Add error code for case where gmtime() fails.
+
+ *Steve Henson*
+
+ * DSA routines: under certain error conditions uninitialized BN objects
+ could be freed. Solution: make sure initialization is performed early
+ enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
+ Nils Larsch <nla@trustcenter.de> via PR#459)
+
+ *Lutz Jaenicke*
+
+ * Another fix for SSLv2 session ID handling: the session ID was incorrectly
+ checked on reconnect on the client side, therefore session resumption
+ could still fail with a "ssl session id is different" error. This
+ behaviour is masked when SSL_OP_ALL is used due to
+ SSL_OP_MICROSOFT_SESS_ID_BUG being set.
+ Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
+ followup to PR #377.
+
+ *Lutz Jaenicke*
+
+ * IA-32 assembler support enhancements: unified ELF targets, support
+ for SCO/Caldera platforms, fix for Cygwin shared build.
+
+ *Andy Polyakov*
+
+ * Add support for FreeBSD on sparc64. As a consequence, support for
+ FreeBSD on non-x86 processors is separate from x86 processors on
+ the config script, much like the NetBSD support.
+
+ *Richard Levitte & Kris Kennaway <kris@obsecurity.org>*
+
+### Changes between 0.9.6h and 0.9.7 [31 Dec 2002] ###
+
+[NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
+OpenSSL 0.9.7.]
+
+ * Fix session ID handling in SSLv2 client code: the SERVER FINISHED
+ code (06) was taken as the first octet of the session ID and the last
+ octet was ignored consequently. As a result SSLv2 client side session
+ caching could not have worked due to the session ID mismatch between
+ client and server.
+ Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
+ PR #377.
+
+ *Lutz Jaenicke*
+
+ * Change the declaration of needed Kerberos libraries to use EX_LIBS
+ instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
+ removed entirely.
+
+ *Richard Levitte*
+
+ * The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
+ seems that in spite of existing for more than a year, many application
+ author have done nothing to provide the necessary callbacks, which
+ means that this particular engine will not work properly anywhere.
+ This is a very unfortunate situation which forces us, in the name
+ of usability, to give the hw_ncipher.c a static lock, which is part
+ of libcrypto.
+ NOTE: This is for the 0.9.7 series ONLY. This hack will never
+ appear in 0.9.8 or later. We EXPECT application authors to have
+ dealt properly with this when 0.9.8 is released (unless we actually
+ make such changes in the libcrypto locking code that changes will
+ have to be made anyway).
+
+ *Richard Levitte*
+
+ * In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
+ octets have been read, EOF or an error occurs. Without this change
+ some truncated ASN1 structures will not produce an error.
+
+ *Steve Henson*
+
+ * Disable Heimdal support, since it hasn't been fully implemented.
+ Still give the possibility to force the use of Heimdal, but with
+ warnings and a request that patches get sent to openssl-dev.
+
+ *Richard Levitte*
+
+ * Add the VC-CE target, introduce the WINCE sysname, and add
+ INSTALL.WCE and appropriate conditionals to make it build.
+
+ *Steven Reddie <smr@essemer.com.au> via Richard Levitte*
+
+ * Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
+ cygssl-x.y.z.dll, where x, y and z are the major, minor and
+ edit numbers of the version.
+
+ *Corinna Vinschen <vinschen@redhat.com> and Richard Levitte*
+
+ * Introduce safe string copy and catenation functions
+ (BUF_strlcpy() and BUF_strlcat()).
+
+ *Ben Laurie (CHATS) and Richard Levitte*
+
+ * Avoid using fixed-size buffers for one-line DNs.
+
+ *Ben Laurie (CHATS)*
+
+ * Add BUF_MEM_grow_clean() to avoid information leakage when
+ resizing buffers containing secrets, and use where appropriate.
+
+ *Ben Laurie (CHATS)*
+
+ * Avoid using fixed size buffers for configuration file location.
+
+ *Ben Laurie (CHATS)*
+
+ * Avoid filename truncation for various CA files.
+
+ *Ben Laurie (CHATS)*
+
+ * Use sizeof in preference to magic numbers.
+
+ *Ben Laurie (CHATS)*
+
+ * Avoid filename truncation in cert requests.
+
+ *Ben Laurie (CHATS)*
+
+ * Add assertions to check for (supposedly impossible) buffer
+ overflows.
+
+ *Ben Laurie (CHATS)*
+
+ * Don't cache truncated DNS entries in the local cache (this could
+ potentially lead to a spoofing attack).
+
+ *Ben Laurie (CHATS)*
+
+ * Fix various buffers to be large enough for hex/decimal
+ representations in a platform independent manner.
+
+ *Ben Laurie (CHATS)*
+
+ * Add CRYPTO_realloc_clean() to avoid information leakage when
+ resizing buffers containing secrets, and use where appropriate.
+
+ *Ben Laurie (CHATS)*
+
+ * Add BIO_indent() to avoid much slightly worrying code to do
+ indents.
+
+ *Ben Laurie (CHATS)*
+
+ * Convert sprintf()/BIO_puts() to BIO_printf().
+
+ *Ben Laurie (CHATS)*
+
+ * buffer_gets() could terminate with the buffer only half
+ full. Fixed.
+
+ *Ben Laurie (CHATS)*
+
+ * Add assertions to prevent user-supplied crypto functions from
+ overflowing internal buffers by having large block sizes, etc.
+
+ *Ben Laurie (CHATS)*
+
+ * New OPENSSL_assert() macro (similar to assert(), but enabled
+ unconditionally).
+
+ *Ben Laurie (CHATS)*
+
+ * Eliminate unused copy of key in RC4.
+
+ *Ben Laurie (CHATS)*
+
+ * Eliminate unused and incorrectly sized buffers for IV in pem.h.
+
+ *Ben Laurie (CHATS)*
+
+ * Fix off-by-one error in EGD path.
+
+ *Ben Laurie (CHATS)*
+
+ * If RANDFILE path is too long, ignore instead of truncating.
+
+ *Ben Laurie (CHATS)*
+
+ * Eliminate unused and incorrectly sized X.509 structure
+ CBCParameter.
+
+ *Ben Laurie (CHATS)*
+
+ * Eliminate unused and dangerous function knumber().
+
+ *Ben Laurie (CHATS)*
+
+ * Eliminate unused and dangerous structure, KSSL_ERR.
+
+ *Ben Laurie (CHATS)*
+
+ * Protect against overlong session ID context length in an encoded
+ session object. Since these are local, this does not appear to be
+ exploitable.
+
+ *Ben Laurie (CHATS)*
+
+ * Change from security patch (see 0.9.6e below) that did not affect
+ the 0.9.6 release series:
+
+ Remote buffer overflow in SSL3 protocol - an attacker could
+ supply an oversized master key in Kerberos-enabled versions.
+ (CVE-2002-0657)
+
+ *Ben Laurie (CHATS)*
+
+ * Change the SSL kerb5 codes to match RFC 2712.
+
+ *Richard Levitte*
+
+ * Make -nameopt work fully for req and add -reqopt switch.
+
+ *Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson*
+
+ * The "block size" for block ciphers in CFB and OFB mode should be 1.
+
+ *Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>*
+
+ * Make sure tests can be performed even if the corresponding algorithms
+ have been removed entirely. This was also the last step to make
+ OpenSSL compilable with DJGPP under all reasonable conditions.
+
+ *Richard Levitte, Doug Kaufman <dkaufman@rahul.net>*
+
+ * Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
+ to allow version independent disabling of normally unselected ciphers,
+ which may be activated as a side-effect of selecting a single cipher.
+
+ (E.g., cipher list string "RSA" enables ciphersuites that are left
+ out of "ALL" because they do not provide symmetric encryption.
+ "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
+
+ *Lutz Jaenicke, Bodo Moeller*
+
+ * Add appropriate support for separate platform-dependent build
+ directories. The recommended way to make a platform-dependent
+ build directory is the following (tested on Linux), maybe with
+ some local tweaks:
+
+ # Place yourself outside of the OpenSSL source tree. In
+ # this example, the environment variable OPENSSL_SOURCE
+ # is assumed to contain the absolute OpenSSL source directory.
+ mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
+ cd objtree/"`uname -s`-`uname -r`-`uname -m`"
+ (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
+ mkdir -p `dirname $F`
+ ln -s $OPENSSL_SOURCE/$F $F
+ done
+
+ To be absolutely sure not to disturb the source tree, a "make clean"
+ is a good thing. If it isn't successful, don't worry about it,
+ it probably means the source directory is very clean.
+
+ *Richard Levitte*
+
+ * Make sure any ENGINE control commands make local copies of string
+ pointers passed to them whenever necessary. Otherwise it is possible
+ the caller may have overwritten (or deallocated) the original string
+ data when a later ENGINE operation tries to use the stored values.
+
+ *Götz Babin-Ebell <babinebell@trustcenter.de>*
+
+ * Improve diagnostics in file reading and command-line digests.
+
+ *Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>*
+
+ * Add AES modes CFB and OFB to the object database. Correct an
+ error in AES-CFB decryption.
+
+ *Richard Levitte*
+
+ * Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
+ allows existing EVP_CIPHER_CTX structures to be reused after
+ calling EVP_*Final(). This behaviour is used by encryption
+ BIOs and some applications. This has the side effect that
+ applications must explicitly clean up cipher contexts with
+ EVP_CIPHER_CTX_cleanup() or they will leak memory.
+
+ *Steve Henson*
+
+ * Check the values of dna and dnb in bn_mul_recursive before calling
+ bn_mul_comba (a non zero value means the a or b arrays do not contain
+ n2 elements) and fallback to bn_mul_normal if either is not zero.
+
+ *Steve Henson*
+
+ * Fix escaping of non-ASCII characters when using the -subj option
+ of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
+
+ *Lutz Jaenicke*
+
+ * Make object definitions compliant to LDAP (RFC2256): SN is the short
+ form for "surname", serialNumber has no short form.
+ Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
+ therefore remove "mail" short name for "internet 7".
+ The OID for unique identifiers in X509 certificates is
+ x500UniqueIdentifier, not uniqueIdentifier.
+ Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
+
+ *Lutz Jaenicke*
+
+ * Add an "init" command to the ENGINE config module and auto initialize
+ ENGINEs. Without any "init" command the ENGINE will be initialized
+ after all ctrl commands have been executed on it. If init=1 the
+ ENGINE is initialized at that point (ctrls before that point are run
+ on the uninitialized ENGINE and after on the initialized one). If
+ init=0 then the ENGINE will not be initialized at all.
+
+ *Steve Henson*
+
+ * Fix the 'app_verify_callback' interface so that the user-defined
+ argument is actually passed to the callback: In the
+ SSL_CTX_set_cert_verify_callback() prototype, the callback
+ declaration has been changed from
+ int (*cb)()
+ into
+ int (*cb)(X509_STORE_CTX *,void *);
+ in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
+ i=s->ctx->app_verify_callback(&ctx)
+ has been changed into
+ i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
+
+ To update applications using SSL_CTX_set_cert_verify_callback(),
+ a dummy argument can be added to their callback functions.
+
+ *D. K. Smetters <smetters@parc.xerox.com>*
+
+ * Added the '4758cca' ENGINE to support IBM 4758 cards.
+
+ *Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe*
+
+ * Add and OPENSSL_LOAD_CONF define which will cause
+ OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
+ This allows older applications to transparently support certain
+ OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
+ Two new functions OPENSSL_add_all_algorithms_noconf() which will never
+ load the config file and OPENSSL_add_all_algorithms_conf() which will
+ always load it have also been added.
+
+ *Steve Henson*
+
+ * Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
+ Adjust NIDs and EVP layer.
+
+ *Stephen Sprunk <stephen@sprunk.org> and Richard Levitte*
+
+ * Config modules support in openssl utility.
+
+ Most commands now load modules from the config file,
+ though in a few (such as version) this isn't done
+ because it couldn't be used for anything.
+
+ In the case of ca and req the config file used is
+ the same as the utility itself: that is the -config
+ command line option can be used to specify an
+ alternative file.
+
+ *Steve Henson*
+
+ * Move default behaviour from OPENSSL_config(). If appname is NULL
+ use "openssl_conf" if filename is NULL use default openssl config file.
+
+ *Steve Henson*
+
+ * Add an argument to OPENSSL_config() to allow the use of an alternative
+ config section name. Add a new flag to tolerate a missing config file
+ and move code to CONF_modules_load_file().
+
+ *Steve Henson*
+
+ * Support for crypto accelerator cards from Accelerated Encryption
+ Processing, www.aep.ie. (Use engine 'aep')
+ The support was copied from 0.9.6c [engine] and adapted/corrected
+ to work with the new engine framework.
+
+ *AEP Inc. and Richard Levitte*
+
+ * Support for SureWare crypto accelerator cards from Baltimore
+ Technologies. (Use engine 'sureware')
+ The support was copied from 0.9.6c [engine] and adapted
+ to work with the new engine framework.
+
+ *Richard Levitte*
+
+ * Have the CHIL engine fork-safe (as defined by nCipher) and actually
+ make the newer ENGINE framework commands for the CHIL engine work.
+
+ *Toomas Kiisk <vix@cyber.ee> and Richard Levitte*
+
+ * Make it possible to produce shared libraries on ReliantUNIX.
+
+ *Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte*
+
+ * Add the configuration target debug-linux-ppro.
+ Make 'openssl rsa' use the general key loading routines
+ implemented in apps.c, and make those routines able to
+ handle the key format FORMAT_NETSCAPE and the variant
+ FORMAT_IISSGC.
+
+ *Toomas Kiisk <vix@cyber.ee> via Richard Levitte*
+
+ * Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
+
+ *Toomas Kiisk <vix@cyber.ee> via Richard Levitte*
+
+ * Add -keyform to rsautl, and document -engine.
+
+ *Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>*
+
+ * Change BIO_new_file (crypto/bio/bss_file.c) to use new
+ BIO_R_NO_SUCH_FILE error code rather than the generic
+ ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
+
+ *Ben Laurie*
+
+ * Add new functions
+ ERR_peek_last_error
+ ERR_peek_last_error_line
+ ERR_peek_last_error_line_data.
+ These are similar to
+ ERR_peek_error
+ ERR_peek_error_line
+ ERR_peek_error_line_data,
+ but report on the latest error recorded rather than the first one
+ still in the error queue.
+
+ *Ben Laurie, Bodo Moeller*
+
+ * default_algorithms option in ENGINE config module. This allows things
+ like:
+ default_algorithms = ALL
+ default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
+
+ *Steve Henson*
+
+ * Preliminary ENGINE config module.
+
+ *Steve Henson*
+
+ * New experimental application configuration code.
+
+ *Steve Henson*
+
+ * Change the AES code to follow the same name structure as all other
+ symmetric ciphers, and behave the same way. Move everything to
+ the directory crypto/aes, thereby obsoleting crypto/rijndael.
+
+ *Stephen Sprunk <stephen@sprunk.org> and Richard Levitte*
+
+ * SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
+
+ *Ben Laurie and Theo de Raadt*
+
+ * Add option to output public keys in req command.
+
+ *Massimiliano Pala madwolf@openca.org*
+
+ * Use wNAFs in EC_POINTs_mul() for improved efficiency
+ (up to about 10% better than before for P-192 and P-224).
+
+ *Bodo Moeller*
+
+ * New functions/macros
+
+ SSL_CTX_set_msg_callback(ctx, cb)
+ SSL_CTX_set_msg_callback_arg(ctx, arg)
+ SSL_set_msg_callback(ssl, cb)
+ SSL_set_msg_callback_arg(ssl, arg)
+
+ to request calling a callback function
+
+ void cb(int write_p, int version, int content_type,
+ const void *buf, size_t len, SSL *ssl, void *arg)
+
+ whenever a protocol message has been completely received
+ (write_p == 0) or sent (write_p == 1). Here 'version' is the
+ protocol version according to which the SSL library interprets
+ the current protocol message (SSL2_VERSION, SSL3_VERSION, or
+ TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
+ the content type as defined in the SSL 3.0/TLS 1.0 protocol
+ specification (change_cipher_spec(20), alert(21), handshake(22)).
+ 'buf' and 'len' point to the actual message, 'ssl' to the
+ SSL object, and 'arg' is the application-defined value set by
+ SSL[_CTX]_set_msg_callback_arg().
+
+ 'openssl s_client' and 'openssl s_server' have new '-msg' options
+ to enable a callback that displays all protocol messages.
+
+ *Bodo Moeller*
+
+ * Change the shared library support so shared libraries are built as
+ soon as the corresponding static library is finished, and thereby get
+ openssl and the test programs linked against the shared library.
+ This still only happens when the keyword "shard" has been given to
+ the configuration scripts.
+
+ NOTE: shared library support is still an experimental thing, and
+ backward binary compatibility is still not guaranteed.
+
+ *"Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte*
+
+ * Add support for Subject Information Access extension.
+
+ *Peter Sylvester <Peter.Sylvester@EdelWeb.fr>*
+
+ * Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
+ additional bytes when new memory had to be allocated, not just
+ when reusing an existing buffer.
+
+ *Bodo Moeller*
+
+ * New command line and configuration option 'utf8' for the req command.
+ This allows field values to be specified as UTF8 strings.
+
+ *Steve Henson*
+
+ * Add -multi and -mr options to "openssl speed" - giving multiple parallel
+ runs for the former and machine-readable output for the latter.
+
+ *Ben Laurie*
+
+ * Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
+ of the e-mail address in the DN (i.e., it will go into a certificate
+ extension only). The new configuration file option 'email_in_dn = no'
+ has the same effect.
+
+ *Massimiliano Pala madwolf@openca.org*
+
+ * Change all functions with names starting with des_ to be starting
+ with DES_ instead. Add wrappers that are compatible with libdes,
+ but are named _ossl_old_des_*. Finally, add macros that map the
+ des_* symbols to the corresponding _ossl_old_des_* if libdes
+ compatibility is desired. If OpenSSL 0.9.6c compatibility is
+ desired, the des_* symbols will be mapped to DES_*, with one
+ exception.
+
+ Since we provide two compatibility mappings, the user needs to
+ define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
+ compatibility is desired. The default (i.e., when that macro
+ isn't defined) is OpenSSL 0.9.6c compatibility.
+
+ There are also macros that enable and disable the support of old
+ des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
+ and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
+ are defined, the default will apply: to support the old des routines.
+
+ In either case, one must include openssl/des.h to get the correct
+ definitions. Do not try to just include openssl/des_old.h, that
+ won't work.
+
+ NOTE: This is a major break of an old API into a new one. Software
+ authors are encouraged to switch to the DES_ style functions. Some
+ time in the future, des_old.h and the libdes compatibility functions
+ will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
+ default), and then completely removed.
+
+ *Richard Levitte*
+
+ * Test for certificates which contain unsupported critical extensions.
+ If such a certificate is found during a verify operation it is
+ rejected by default: this behaviour can be overridden by either
+ handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
+ by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
+ X509_supported_extension() has also been added which returns 1 if a
+ particular extension is supported.
+
+ *Steve Henson*
+
+ * Modify the behaviour of EVP cipher functions in similar way to digests
+ to retain compatibility with existing code.
+
+ *Steve Henson*
+
+ * Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
+ compatibility with existing code. In particular the 'ctx' parameter does
+ not have to be to be initialized before the call to EVP_DigestInit() and
+ it is tidied up after a call to EVP_DigestFinal(). New function
+ EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
+ EVP_MD_CTX_copy() changed to not require the destination to be
+ initialized valid and new function EVP_MD_CTX_copy_ex() added which
+ requires the destination to be valid.
+
+ Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
+ EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
+
+ *Steve Henson*
+
+ * Change ssl3_get_message (ssl/s3_both.c) and the functions using it
+ so that complete 'Handshake' protocol structures are kept in memory
+ instead of overwriting 'msg_type' and 'length' with 'body' data.
+
+ *Bodo Moeller*
+
+ * Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
+
+ *Massimo Santin via Richard Levitte*
+
+ * Major restructuring to the underlying ENGINE code. This includes
+ reduction of linker bloat, separation of pure "ENGINE" manipulation
+ (initialisation, etc) from functionality dealing with implementations
+ of specific crypto interfaces. This change also introduces integrated
+ support for symmetric ciphers and digest implementations - so ENGINEs
+ can now accelerate these by providing EVP_CIPHER and EVP_MD
+ implementations of their own. This is detailed in crypto/engine/README
+ as it couldn't be adequately described here. However, there are a few
+ API changes worth noting - some RSA, DSA, DH, and RAND functions that
+ were changed in the original introduction of ENGINE code have now
+ reverted back - the hooking from this code to ENGINE is now a good
+ deal more passive and at run-time, operations deal directly with
+ RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
+ dereferencing through an ENGINE pointer any more. Also, the ENGINE
+ functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
+ they were not being used by the framework as there is no concept of a
+ BIGNUM_METHOD and they could not be generalised to the new
+ 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
+ ENGINE_cpy() has been removed as it cannot be consistently defined in
+ the new code.
+
+ *Geoff Thorpe*
+
+ * Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
+
+ *Steve Henson*
+
+ * Change mkdef.pl to sort symbols that get the same entry number,
+ and make sure the automatically generated functions ERR_load_*
+ become part of libeay.num as well.
+
+ *Richard Levitte*
+
+ * New function SSL_renegotiate_pending(). This returns true once
+ renegotiation has been requested (either SSL_renegotiate() call
+ or HelloRequest/ClientHello received from the peer) and becomes
+ false once a handshake has been completed.
+ (For servers, SSL_renegotiate() followed by SSL_do_handshake()
+ sends a HelloRequest, but does not ensure that a handshake takes
+ place. SSL_renegotiate_pending() is useful for checking if the
+ client has followed the request.)
+
+ *Bodo Moeller*
+
+ * New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
+ By default, clients may request session resumption even during
+ renegotiation (if session ID contexts permit); with this option,
+ session resumption is possible only in the first handshake.
+
+ SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
+ more bits available for options that should not be part of
+ SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
+
+ *Bodo Moeller*
+
+ * Add some demos for certificate and certificate request creation.
+
+ *Steve Henson*
+
+ * Make maximum certificate chain size accepted from the peer application
+ settable (SSL*_get/set_max_cert_list()), as proposed by
+ "Douglas E. Engert" <deengert@anl.gov>.
+
+ *Lutz Jaenicke*
+
+ * Add support for shared libraries for Unixware-7
+ (Boyd Lynn Gerber <gerberb@zenez.com>).
+
+ *Lutz Jaenicke*
+
+ * Add a "destroy" handler to ENGINEs that allows structural cleanup to
+ be done prior to destruction. Use this to unload error strings from
+ ENGINEs that load their own error strings. NB: This adds two new API
+ functions to "get" and "set" this destroy handler in an ENGINE.
+
+ *Geoff Thorpe*
+
+ * Alter all existing ENGINE implementations (except "openssl" and
+ "openbsd") to dynamically instantiate their own error strings. This
+ makes them more flexible to be built both as statically-linked ENGINEs
+ and self-contained shared-libraries loadable via the "dynamic" ENGINE.
+ Also, add stub code to each that makes building them as self-contained
+ shared-libraries easier (see README.ENGINE).
+
+ *Geoff Thorpe*
+
+ * Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
+ implementations into applications that are completely implemented in
+ self-contained shared-libraries. The "dynamic" ENGINE exposes control
+ commands that can be used to configure what shared-library to load and
+ to control aspects of the way it is handled. Also, made an update to
+ the README.ENGINE file that brings its information up-to-date and
+ provides some information and instructions on the "dynamic" ENGINE
+ (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
+
+ *Geoff Thorpe*
+
+ * Make it possible to unload ranges of ERR strings with a new
+ "ERR_unload_strings" function.
+
+ *Geoff Thorpe*
+
+ * Add a copy() function to EVP_MD.
+
+ *Ben Laurie*
+
+ * Make EVP_MD routines take a context pointer instead of just the
+ md_data void pointer.
+
+ *Ben Laurie*
+
+ * Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
+ that the digest can only process a single chunk of data
+ (typically because it is provided by a piece of
+ hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
+ is only going to provide a single chunk of data, and hence the
+ framework needn't accumulate the data for oneshot drivers.
+
+ *Ben Laurie*
+
+ * As with "ERR", make it possible to replace the underlying "ex_data"
+ functions. This change also alters the storage and management of global
+ ex_data state - it's now all inside ex_data.c and all "class" code (eg.
+ RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
+ index counters. The API functions that use this state have been changed
+ to take a "class_index" rather than pointers to the class's local STACK
+ and counter, and there is now an API function to dynamically create new
+ classes. This centralisation allows us to (a) plug a lot of the
+ thread-safety problems that existed, and (b) makes it possible to clean
+ up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
+ such data would previously have always leaked in application code and
+ workarounds were in place to make the memory debugging turn a blind eye
+ to it. Application code that doesn't use this new function will still
+ leak as before, but their memory debugging output will announce it now
+ rather than letting it slide.
+
+ Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
+ induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
+ has a return value to indicate success or failure.
+
+ *Geoff Thorpe*
+
+ * Make it possible to replace the underlying "ERR" functions such that the
+ global state (2 LHASH tables and 2 locks) is only used by the "default"
+ implementation. This change also adds two functions to "get" and "set"
+ the implementation prior to it being automatically set the first time
+ any other ERR function takes place. Ie. an application can call "get",
+ pass the return value to a module it has just loaded, and that module
+ can call its own "set" function using that value. This means the
+ module's "ERR" operations will use (and modify) the error state in the
+ application and not in its own statically linked copy of OpenSSL code.
+
+ *Geoff Thorpe*
+
+ * Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
+ reference counts. This performs normal REF_PRINT/REF_CHECK macros on
+ the operation, and provides a more encapsulated way for external code
+ (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
+ to use these functions rather than manually incrementing the counts.
+
+ Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
+
+ *Geoff Thorpe*
+
+ * Add EVP test program.
+
+ *Ben Laurie*
+
+ * Add symmetric cipher support to ENGINE. Expect the API to change!
+
+ *Ben Laurie*
+
+ * New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
+ X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
+ X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
+ These allow a CRL to be built without having to access X509_CRL fields
+ directly. Modify 'ca' application to use new functions.
+
+ *Steve Henson*
+
+ * Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
+ bug workarounds. Rollback attack detection is a security feature.
+ The problem will only arise on OpenSSL servers when TLSv1 is not
+ available (sslv3_server_method() or SSL_OP_NO_TLSv1).
+ Software authors not wanting to support TLSv1 will have special reasons
+ for their choice and can explicitly enable this option.
+
+ *Bodo Moeller, Lutz Jaenicke*
+
+ * Rationalise EVP so it can be extended: don't include a union of
+ cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
+ (similar to those existing for EVP_CIPHER_CTX).
+ Usage example:
+
+ EVP_MD_CTX md;
+
+ EVP_MD_CTX_init(&md); /* new function call */
+ EVP_DigestInit(&md, EVP_sha1());
+ EVP_DigestUpdate(&md, in, len);
+ EVP_DigestFinal(&md, out, NULL);
+ EVP_MD_CTX_cleanup(&md); /* new function call */
+
+
+ *Ben Laurie*
+
+ * Make DES key schedule conform to the usual scheme, as well as
+ correcting its structure. This means that calls to DES functions
+ now have to pass a pointer to a des_key_schedule instead of a
+ plain des_key_schedule (which was actually always a pointer
+ anyway): E.g.,
+
+ des_key_schedule ks;
+
+ des_set_key_checked(..., &ks);
+ des_ncbc_encrypt(..., &ks, ...);
+
+ (Note that a later change renames 'des_...' into 'DES_...'.)
+
+ *Ben Laurie*
+
+ * Initial reduction of linker bloat: the use of some functions, such as
+ PEM causes large amounts of unused functions to be linked in due to
+ poor organisation. For example pem_all.c contains every PEM function
+ which has a knock on effect of linking in large amounts of (unused)
+ ASN1 code. Grouping together similar functions and splitting unrelated
+ functions prevents this.
+
+ *Steve Henson*
+
+ * Cleanup of EVP macros.
+
+ *Ben Laurie*
+
+ * Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
+ correct _ecb suffix.
+
+ *Ben Laurie*
+
+ * Add initial OCSP responder support to ocsp application. The
+ revocation information is handled using the text based index
+ use by the ca application. The responder can either handle
+ requests generated internally, supplied in files (for example
+ via a CGI script) or using an internal minimal server.
+
+ *Steve Henson*
+
+ * Add configuration choices to get zlib compression for TLS.
+
+ *Richard Levitte*
+
+ * Changes to Kerberos SSL for RFC 2712 compliance:
+ 1. Implemented real KerberosWrapper, instead of just using
+ KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
+ 2. Implemented optional authenticator field of KerberosWrapper.
+
+ Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
+ and authenticator structs; see crypto/krb5/.
+
+ Generalized Kerberos calls to support multiple Kerberos libraries.
+ *Vern Staats <staatsvr@asc.hpc.mil>,
+ Jeffrey Altman <jaltman@columbia.edu>
+ via Richard Levitte*
+
+ * Cause 'openssl speed' to use fully hard-coded DSA keys as it
+ already does with RSA. testdsa.h now has 'priv_key/pub_key'
+ values for each of the key sizes rather than having just
+ parameters (and 'speed' generating keys each time).
+
+ *Geoff Thorpe*
+
+ * Speed up EVP routines.
+ Before:
+crypt
+pe 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
+s-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
+s-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
+s-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
+crypt
+s-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
+s-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
+s-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
+ After:
+crypt
+s-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
+crypt
+s-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
+
+ *Ben Laurie*
+
+ * Added the OS2-EMX target.
+
+ *"Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte*
+
+ * Rewrite apps to use NCONF routines instead of the old CONF. New functions
+ to support NCONF routines in extension code. New function CONF_set_nconf()
+ to allow functions which take an NCONF to also handle the old LHASH
+ structure: this means that the old CONF compatible routines can be
+ retained (in particular wrt extensions) without having to duplicate the
+ code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
+
+ *Steve Henson*
+
+ * Enhance the general user interface with mechanisms for inner control
+ and with possibilities to have yes/no kind of prompts.
+
+ *Richard Levitte*
+
+ * Change all calls to low level digest routines in the library and
+ applications to use EVP. Add missing calls to HMAC_cleanup() and
+ don't assume HMAC_CTX can be copied using memcpy().
+
+ *Verdon Walker <VWalker@novell.com>, Steve Henson*
+
+ * Add the possibility to control engines through control names but with
+ arbitrary arguments instead of just a string.
+ Change the key loaders to take a UI_METHOD instead of a callback
+ function pointer. NOTE: this breaks binary compatibility with earlier
+ versions of OpenSSL [engine].
+ Adapt the nCipher code for these new conditions and add a card insertion
+ callback.
+
+ *Richard Levitte*
+
+ * Enhance the general user interface with mechanisms to better support
+ dialog box interfaces, application-defined prompts, the possibility
+ to use defaults (for example default passwords from somewhere else)
+ and interrupts/cancellations.
+
+ *Richard Levitte*
+
+ * Tidy up PKCS#12 attribute handling. Add support for the CSP name
+ attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
+
+ *Steve Henson*
+
+ * Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
+ tidy up some unnecessarily weird code in 'sk_new()').
+
+ *Geoff, reported by Diego Tartara <dtartara@novamens.com>*
+
+ * Change the key loading routines for ENGINEs to use the same kind
+ callback (pem_password_cb) as all other routines that need this
+ kind of callback.
+
+ *Richard Levitte*
+
+ * Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
+ 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
+ than this minimum value is recommended.
+
+ *Lutz Jaenicke*
+
+ * New random seeder for OpenVMS, using the system process statistics
+ that are easily reachable.
+
+ *Richard Levitte*
+
+ * Windows apparently can't transparently handle global
+ variables defined in DLLs. Initialisations such as:
+
+ const ASN1_ITEM *it = &ASN1_INTEGER_it;
+
+ won't compile. This is used by the any applications that need to
+ declare their own ASN1 modules. This was fixed by adding the option
+ EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
+ needed for static libraries under Win32.
+
+ *Steve Henson*
+
+ * New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
+ setting of purpose and trust fields. New X509_STORE trust and
+ purpose functions and tidy up setting in other SSL functions.
+
+ *Steve Henson*
+
+ * Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
+ structure. These are inherited by X509_STORE_CTX when it is
+ initialised. This allows various defaults to be set in the
+ X509_STORE structure (such as flags for CRL checking and custom
+ purpose or trust settings) for functions which only use X509_STORE_CTX
+ internally such as S/MIME.
+
+ Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
+ trust settings if they are not set in X509_STORE. This allows X509_STORE
+ purposes and trust (in S/MIME for example) to override any set by default.
+
+ Add command line options for CRL checking to smime, s_client and s_server
+ applications.
+
+ *Steve Henson*
+
+ * Initial CRL based revocation checking. If the CRL checking flag(s)
+ are set then the CRL is looked up in the X509_STORE structure and
+ its validity and signature checked, then if the certificate is found
+ in the CRL the verify fails with a revoked error.
+
+ Various new CRL related callbacks added to X509_STORE_CTX structure.
+
+ Command line options added to 'verify' application to support this.
+
+ This needs some additional work, such as being able to handle multiple
+ CRLs with different times, extension based lookup (rather than just
+ by subject name) and ultimately more complete V2 CRL extension
+ handling.
+
+ *Steve Henson*
+
+ * Add a general user interface API (crypto/ui/). This is designed
+ to replace things like des_read_password and friends (backward
+ compatibility functions using this new API are provided).
+ The purpose is to remove prompting functions from the DES code
+ section as well as provide for prompting through dialog boxes in
+ a window system and the like.
+
+ *Richard Levitte*
+
+ * Add "ex_data" support to ENGINE so implementations can add state at a
+ per-structure level rather than having to store it globally.
+
+ *Geoff*
+
+ * Make it possible for ENGINE structures to be copied when retrieved by
+ ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
+ This causes the "original" ENGINE structure to act like a template,
+ analogous to the RSA vs. RSA_METHOD type of separation. Because of this
+ operational state can be localised to each ENGINE structure, despite the
+ fact they all share the same "methods". New ENGINE structures returned in
+ this case have no functional references and the return value is the single
+ structural reference. This matches the single structural reference returned
+ by ENGINE_by_id() normally, when it is incremented on the pre-existing
+ ENGINE structure.
+
+ *Geoff*
+
+ * Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
+ needs to match any other type at all we need to manually clear the
+ tag cache.
+
+ *Steve Henson*
+
+ * Changes to the "openssl engine" utility to include;
+ - verbosity levels ('-v', '-vv', and '-vvv') that provide information
+ about an ENGINE's available control commands.
+ - executing control commands from command line arguments using the
+ '-pre' and '-post' switches. '-post' is only used if '-t' is
+ specified and the ENGINE is successfully initialised. The syntax for
+ the individual commands are colon-separated, for example;
+ openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
+
+ *Geoff*
+
+ * New dynamic control command support for ENGINEs. ENGINEs can now
+ declare their own commands (numbers), names (strings), descriptions,
+ and input types for run-time discovery by calling applications. A
+ subset of these commands are implicitly classed as "executable"
+ depending on their input type, and only these can be invoked through
+ the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
+ can be based on user input, config files, etc). The distinction is
+ that "executable" commands cannot return anything other than a boolean
+ result and can only support numeric or string input, whereas some
+ discoverable commands may only be for direct use through
+ ENGINE_ctrl(), eg. supporting the exchange of binary data, function
+ pointers, or other custom uses. The "executable" commands are to
+ support parameterisations of ENGINE behaviour that can be
+ unambiguously defined by ENGINEs and used consistently across any
+ OpenSSL-based application. Commands have been added to all the
+ existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
+ control over shared-library paths without source code alterations.
+
+ *Geoff*
+
+ * Changed all ENGINE implementations to dynamically allocate their
+ ENGINEs rather than declaring them statically. Apart from this being
+ necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
+ this also allows the implementations to compile without using the
+ internal engine_int.h header.
+
+ *Geoff*
+
+ * Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
+ 'const' value. Any code that should be able to modify a RAND_METHOD
+ should already have non-const pointers to it (ie. they should only
+ modify their own ones).
+
+ *Geoff*
+
+ * Made a variety of little tweaks to the ENGINE code.
+ - "atalla" and "ubsec" string definitions were moved from header files
+ to C code. "nuron" string definitions were placed in variables
+ rather than hard-coded - allowing parameterisation of these values
+ later on via ctrl() commands.
+ - Removed unused "#if 0"'d code.
+ - Fixed engine list iteration code so it uses ENGINE_free() to release
+ structural references.
+ - Constified the RAND_METHOD element of ENGINE structures.
+ - Constified various get/set functions as appropriate and added
+ missing functions (including a catch-all ENGINE_cpy that duplicates
+ all ENGINE values onto a new ENGINE except reference counts/state).
+ - Removed NULL parameter checks in get/set functions. Setting a method
+ or function to NULL is a way of cancelling out a previously set
+ value. Passing a NULL ENGINE parameter is just plain stupid anyway
+ and doesn't justify the extra error symbols and code.
+ - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
+ flags from engine_int.h to engine.h.
+ - Changed prototypes for ENGINE handler functions (init(), finish(),
+ ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
+
+ *Geoff*
+
+ * Implement binary inversion algorithm for BN_mod_inverse in addition
+ to the algorithm using long division. The binary algorithm can be
+ used only if the modulus is odd. On 32-bit systems, it is faster
+ only for relatively small moduli (roughly 20-30% for 128-bit moduli,
+ roughly 5-15% for 256-bit moduli), so we use it only for moduli
+ up to 450 bits. In 64-bit environments, the binary algorithm
+ appears to be advantageous for much longer moduli; here we use it
+ for moduli up to 2048 bits.
+
+ *Bodo Moeller*
+
+ * Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
+ could not support the combine flag in choice fields.
+
+ *Steve Henson*
+
+ * Add a 'copy_extensions' option to the 'ca' utility. This copies
+ extensions from a certificate request to the certificate.
+
+ *Steve Henson*
+
+ * Allow multiple 'certopt' and 'nameopt' options to be separated
+ by commas. Add 'namopt' and 'certopt' options to the 'ca' config
+ file: this allows the display of the certificate about to be
+ signed to be customised, to allow certain fields to be included
+ or excluded and extension details. The old system didn't display
+ multicharacter strings properly, omitted fields not in the policy
+ and couldn't display additional details such as extensions.
+
+ *Steve Henson*
+
+ * Function EC_POINTs_mul for multiple scalar multiplication
+ of an arbitrary number of elliptic curve points
+ \sum scalars[i]*points[i],
+ optionally including the generator defined for the EC_GROUP:
+ scalar*generator + \sum scalars[i]*points[i].
+
+ EC_POINT_mul is a simple wrapper function for the typical case
+ that the point list has just one item (besides the optional
+ generator).
+
+ *Bodo Moeller*
+
+ * First EC_METHODs for curves over GF(p):
+
+ EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
+ operations and provides various method functions that can also
+ operate with faster implementations of modular arithmetic.
+
+ EC_GFp_mont_method() reuses most functions that are part of
+ EC_GFp_simple_method, but uses Montgomery arithmetic.
+
+ *Bodo Moeller; point addition and point doubling
+ implementation directly derived from source code provided by
+ Lenka Fibikova <fibikova@exp-math.uni-essen.de>*
+
+ * Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
+ crypto/ec/ec_lib.c):
+
+ Curves are EC_GROUP objects (with an optional group generator)
+ based on EC_METHODs that are built into the library.
+
+ Points are EC_POINT objects based on EC_GROUP objects.
+
+ Most of the framework would be able to handle curves over arbitrary
+ finite fields, but as there are no obvious types for fields other
+ than GF(p), some functions are limited to that for now.
+
+ *Bodo Moeller*
+
+ * Add the -HTTP option to s_server. It is similar to -WWW, but requires
+ that the file contains a complete HTTP response.
+
+ *Richard Levitte*
+
+ * Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
+ change the def and num file printf format specifier from "%-40sXXX"
+ to "%-39s XXX". The latter will always guarantee a space after the
+ field while the former will cause them to run together if the field
+ is 40 of more characters long.
+
+ *Steve Henson*
+
+ * Constify the cipher and digest 'method' functions and structures
+ and modify related functions to take constant EVP_MD and EVP_CIPHER
+ pointers.
+
+ *Steve Henson*
+
+ * Hide BN_CTX structure details in bn_lcl.h instead of publishing them
+ in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
+
+ *Bodo Moeller*
+
+ * Modify EVP_Digest*() routines so they now return values. Although the
+ internal software routines can never fail additional hardware versions
+ might.
+
+ *Steve Henson*
+
+ * Clean up crypto/err/err.h and change some error codes to avoid conflicts:
+
+ Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
+ (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
+
+ ASN1 error codes
+ ERR_R_NESTED_ASN1_ERROR
+ ...
+ ERR_R_MISSING_ASN1_EOS
+ were 4 .. 9, conflicting with
+ ERR_LIB_RSA (= ERR_R_RSA_LIB)
+ ...
+ ERR_LIB_PEM (= ERR_R_PEM_LIB).
+ They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
+
+ Add new error code 'ERR_R_INTERNAL_ERROR'.
+
+ *Bodo Moeller*
+
+ * Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
+ suffices.
+
+ *Bodo Moeller*
+
+ * New option '-subj arg' for 'openssl req' and 'openssl ca'. This
+ sets the subject name for a new request or supersedes the
+ subject name in a given request. Formats that can be parsed are
+ 'CN=Some Name, OU=myOU, C=IT'
+ and
+ 'CN=Some Name/OU=myOU/C=IT'.
+
+ Add options '-batch' and '-verbose' to 'openssl req'.
+
+ *Massimiliano Pala <madwolf@hackmasters.net>*
+
+ * Introduce the possibility to access global variables through
+ functions on platform were that's the best way to handle exporting
+ global variables in shared libraries. To enable this functionality,
+ one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
+ "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
+ is normally done by Configure or something similar).
+
+ To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
+ in the source file (foo.c) like this:
+
+ OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
+ OPENSSL_IMPLEMENT_GLOBAL(double,bar);
+
+ To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
+ and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
+
+ OPENSSL_DECLARE_GLOBAL(int,foo);
+ #define foo OPENSSL_GLOBAL_REF(foo)
+ OPENSSL_DECLARE_GLOBAL(double,bar);
+ #define bar OPENSSL_GLOBAL_REF(bar)
+
+ The #defines are very important, and therefore so is including the
+ header file everywhere where the defined globals are used.
+
+ The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
+ of ASN.1 items, but that structure is a bit different.
+
+ The largest change is in util/mkdef.pl which has been enhanced with
+ better and easier to understand logic to choose which symbols should
+ go into the Windows .def files as well as a number of fixes and code
+ cleanup (among others, algorithm keywords are now sorted
+ lexicographically to avoid constant rewrites).
+
+ *Richard Levitte*
+
+ * In BN_div() keep a copy of the sign of 'num' before writing the
+ result to 'rm' because if rm==num the value will be overwritten
+ and produce the wrong result if 'num' is negative: this caused
+ problems with BN_mod() and BN_nnmod().
+
+ *Steve Henson*
+
+ * Function OCSP_request_verify(). This checks the signature on an
+ OCSP request and verifies the signer certificate. The signer
+ certificate is just checked for a generic purpose and OCSP request
+ trust settings.
+
+ *Steve Henson*
+
+ * Add OCSP_check_validity() function to check the validity of OCSP
+ responses. OCSP responses are prepared in real time and may only
+ be a few seconds old. Simply checking that the current time lies
+ between thisUpdate and nextUpdate max reject otherwise valid responses
+ caused by either OCSP responder or client clock inaccuracy. Instead
+ we allow thisUpdate and nextUpdate to fall within a certain period of
+ the current time. The age of the response can also optionally be
+ checked. Two new options -validity_period and -status_age added to
+ ocsp utility.
+
+ *Steve Henson*
+
+ * If signature or public key algorithm is unrecognized print out its
+ OID rather that just UNKNOWN.
+
+ *Steve Henson*
+
+ * Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
+ OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
+ ID to be generated from the issuer certificate alone which can then be
+ passed to OCSP_id_issuer_cmp().
+
+ *Steve Henson*
+
+ * New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
+ ASN1 modules to export functions returning ASN1_ITEM pointers
+ instead of the ASN1_ITEM structures themselves. This adds several
+ new macros which allow the underlying ASN1 function/structure to
+ be accessed transparently. As a result code should not use ASN1_ITEM
+ references directly (such as &X509_it) but instead use the relevant
+ macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
+ use of the new ASN1 code on platforms where exporting structures
+ is problematical (for example in shared libraries) but exporting
+ functions returning pointers to structures is not.
+
+ *Steve Henson*
+
+ * Add support for overriding the generation of SSL/TLS session IDs.
+ These callbacks can be registered either in an SSL_CTX or per SSL.
+ The purpose of this is to allow applications to control, if they wish,
+ the arbitrary values chosen for use as session IDs, particularly as it
+ can be useful for session caching in multiple-server environments. A
+ command-line switch for testing this (and any client code that wishes
+ to use such a feature) has been added to "s_server".
+
+ *Geoff Thorpe, Lutz Jaenicke*
+
+ * Modify mkdef.pl to recognise and parse preprocessor conditionals
+ of the form '#if defined(...) || defined(...) || ...' and
+ '#if !defined(...) && !defined(...) && ...'. This also avoids
+ the growing number of special cases it was previously handling.
+
+ *Richard Levitte*
+
+ * Make all configuration macros available for application by making
+ sure they are available in opensslconf.h, by giving them names starting
+ with "OPENSSL_" to avoid conflicts with other packages and by making
+ sure e_os2.h will cover all platform-specific cases together with
+ opensslconf.h.
+ Additionally, it is now possible to define configuration/platform-
+ specific names (called "system identities"). In the C code, these
+ are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
+ macro with the name beginning with "OPENSSL_SYS_", which is determined
+ from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
+ what is available.
+
+ *Richard Levitte*
+
+ * New option -set_serial to 'req' and 'x509' this allows the serial
+ number to use to be specified on the command line. Previously self
+ signed certificates were hard coded with serial number 0 and the
+ CA options of 'x509' had to use a serial number in a file which was
+ auto incremented.
+
+ *Steve Henson*
+
+ * New options to 'ca' utility to support V2 CRL entry extensions.
+ Currently CRL reason, invalidity date and hold instruction are
+ supported. Add new CRL extensions to V3 code and some new objects.
+
+ *Steve Henson*
+
+ * New function EVP_CIPHER_CTX_set_padding() this is used to
+ disable standard block padding (aka PKCS#5 padding) in the EVP
+ API, which was previously mandatory. This means that the data is
+ not padded in any way and so the total length much be a multiple
+ of the block size, otherwise an error occurs.
+
+ *Steve Henson*
+
+ * Initial (incomplete) OCSP SSL support.
+
+ *Steve Henson*
+
+ * New function OCSP_parse_url(). This splits up a URL into its host,
+ port and path components: primarily to parse OCSP URLs. New -url
+ option to ocsp utility.
+
+ *Steve Henson*
+
+ * New nonce behavior. The return value of OCSP_check_nonce() now
+ reflects the various checks performed. Applications can decide
+ whether to tolerate certain situations such as an absent nonce
+ in a response when one was present in a request: the ocsp application
+ just prints out a warning. New function OCSP_add1_basic_nonce()
+ this is to allow responders to include a nonce in a response even if
+ the request is nonce-less.
+
+ *Steve Henson*
+
+ * Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
+ skipped when using openssl x509 multiple times on a single input file,
+ e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
+
+ *Bodo Moeller*
+
+ * Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
+ set string type: to handle setting ASN1_TIME structures. Fix ca
+ utility to correctly initialize revocation date of CRLs.
+
+ *Steve Henson*
+
+ * New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
+ the clients preferred ciphersuites and rather use its own preferences.
+ Should help to work around M$ SGC (Server Gated Cryptography) bug in
+ Internet Explorer by ensuring unchanged hash method during stepup.
+ (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
+
+ *Lutz Jaenicke*
+
+ * Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
+ to aes and add a new 'exist' option to print out symbols that don't
+ appear to exist.
+
+ *Steve Henson*
+
+ * Additional options to ocsp utility to allow flags to be set and
+ additional certificates supplied.
+
+ *Steve Henson*
+
+ * Add the option -VAfile to 'openssl ocsp', so the user can give the
+ OCSP client a number of certificate to only verify the response
+ signature against.
+
+ *Richard Levitte*
+
+ * Update Rijndael code to version 3.0 and change EVP AES ciphers to
+ handle the new API. Currently only ECB, CBC modes supported. Add new
+ AES OIDs.
+
+ Add TLS AES ciphersuites as described in RFC3268, "Advanced
+ Encryption Standard (AES) Ciphersuites for Transport Layer
+ Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
+ not enabled by default and were not part of the "ALL" ciphersuite
+ alias because they were not yet official; they could be
+ explicitly requested by specifying the "AESdraft" ciphersuite
+ group alias. In the final release of OpenSSL 0.9.7, the group
+ alias is called "AES" and is part of "ALL".)
+
+ *Ben Laurie, Steve Henson, Bodo Moeller*
+
+ * New function OCSP_copy_nonce() to copy nonce value (if present) from
+ request to response.
+
+ *Steve Henson*
+
+ * Functions for OCSP responders. OCSP_request_onereq_count(),
+ OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
+ extract information from a certificate request. OCSP_response_create()
+ creates a response and optionally adds a basic response structure.
+ OCSP_basic_add1_status() adds a complete single response to a basic
+ response and returns the OCSP_SINGLERESP structure just added (to allow
+ extensions to be included for example). OCSP_basic_add1_cert() adds a
+ certificate to a basic response and OCSP_basic_sign() signs a basic
+ response with various flags. New helper functions ASN1_TIME_check()
+ (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
+ (converts ASN1_TIME to GeneralizedTime).
+
+ *Steve Henson*
+
+ * Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
+ in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
+ structure from a certificate. X509_pubkey_digest() digests the public_key
+ contents: this is used in various key identifiers.
+
+ *Steve Henson*
+
+ * Make sk_sort() tolerate a NULL argument.
+
+ *Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>*
+
+ * New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
+ passed by the function are trusted implicitly. If any of them signed the
+ response then it is assumed to be valid and is not verified.
+
+ *Steve Henson*
+
+ * In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
+ to data. This was previously part of the PKCS7 ASN1 code. This
+ was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
+ *Steve Henson, reported by Kenneth R. Robinette
+ <support@securenetterm.com>*
+
+ * Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
+ routines: without these tracing memory leaks is very painful.
+ Fix leaks in PKCS12 and PKCS7 routines.
+
+ *Steve Henson*
+
+ * Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
+ Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
+ effectively meant GeneralizedTime would never be used. Now it
+ is initialised to -1 but X509_time_adj() now has to check the value
+ and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
+ V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
+ *Steve Henson, reported by Kenneth R. Robinette
+ <support@securenetterm.com>*
+
+ * Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
+ result in a zero length in the ASN1_INTEGER structure which was
+ not consistent with the structure when d2i_ASN1_INTEGER() was used
+ and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
+ to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
+ where it did not print out a minus for negative ASN1_INTEGER.
+
+ *Steve Henson*
+
+ * Add summary printout to ocsp utility. The various functions which
+ convert status values to strings have been renamed to:
+ OCSP_response_status_str(), OCSP_cert_status_str() and
+ OCSP_crl_reason_str() and are no longer static. New options
+ to verify nonce values and to disable verification. OCSP response
+ printout format cleaned up.
+
+ *Steve Henson*
+
+ * Add additional OCSP certificate checks. These are those specified
+ in RFC2560. This consists of two separate checks: the CA of the
+ certificate being checked must either be the OCSP signer certificate
+ or the issuer of the OCSP signer certificate. In the latter case the
+ OCSP signer certificate must contain the OCSP signing extended key
+ usage. This check is performed by attempting to match the OCSP
+ signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
+ in the OCSP_CERTID structures of the response.
+
+ *Steve Henson*
+
+ * Initial OCSP certificate verification added to OCSP_basic_verify()
+ and related routines. This uses the standard OpenSSL certificate
+ verify routines to perform initial checks (just CA validity) and
+ to obtain the certificate chain. Then additional checks will be
+ performed on the chain. Currently the root CA is checked to see
+ if it is explicitly trusted for OCSP signing. This is used to set
+ a root CA as a global signing root: that is any certificate that
+ chains to that CA is an acceptable OCSP signing certificate.
+
+ *Steve Henson*
+
+ * New '-extfile ...' option to 'openssl ca' for reading X.509v3
+ extensions from a separate configuration file.
+ As when reading extensions from the main configuration file,
+ the '-extensions ...' option may be used for specifying the
+ section to use.
+
+ *Massimiliano Pala <madwolf@comune.modena.it>*
+
+ * New OCSP utility. Allows OCSP requests to be generated or
+ read. The request can be sent to a responder and the output
+ parsed, outputed or printed in text form. Not complete yet:
+ still needs to check the OCSP response validity.
+
+ *Steve Henson*
+
+ * New subcommands for 'openssl ca':
+ 'openssl ca -status <serial>' prints the status of the cert with
+ the given serial number (according to the index file).
+ 'openssl ca -updatedb' updates the expiry status of certificates
+ in the index file.
+
+ *Massimiliano Pala <madwolf@comune.modena.it>*
+
+ * New '-newreq-nodes' command option to CA.pl. This is like
+ '-newreq', but calls 'openssl req' with the '-nodes' option
+ so that the resulting key is not encrypted.
+
+ *Damien Miller <djm@mindrot.org>*
+
+ * New configuration for the GNU Hurd.
+
+ *Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte*
+
+ * Initial code to implement OCSP basic response verify. This
+ is currently incomplete. Currently just finds the signer's
+ certificate and verifies the signature on the response.
+
+ *Steve Henson*
+
+ * New SSLeay_version code SSLEAY_DIR to determine the compiled-in
+ value of OPENSSLDIR. This is available via the new '-d' option
+ to 'openssl version', and is also included in 'openssl version -a'.
+
+ *Bodo Moeller*
+
+ * Allowing defining memory allocation callbacks that will be given
+ file name and line number information in additional arguments
+ (a const char* and an int). The basic functionality remains, as
+ well as the original possibility to just replace malloc(),
+ realloc() and free() by functions that do not know about these
+ additional arguments. To register and find out the current
+ settings for extended allocation functions, the following
+ functions are provided:
+
+ CRYPTO_set_mem_ex_functions
+ CRYPTO_set_locked_mem_ex_functions
+ CRYPTO_get_mem_ex_functions
+ CRYPTO_get_locked_mem_ex_functions
+
+ These work the same way as CRYPTO_set_mem_functions and friends.
+ CRYPTO_get_[locked_]mem_functions now writes 0 where such an
+ extended allocation function is enabled.
+ Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
+ a conventional allocation function is enabled.
+
+ *Richard Levitte, Bodo Moeller*
+
+ * Finish off removing the remaining LHASH function pointer casts.
+ There should no longer be any prototype-casting required when using
+ the LHASH abstraction, and any casts that remain are "bugs". See
+ the callback types and macros at the head of lhash.h for details
+ (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
+
+ *Geoff Thorpe*
+
+ * Add automatic query of EGD sockets in RAND_poll() for the unix variant.
+ If /dev/[u]random devices are not available or do not return enough
+ entropy, EGD style sockets (served by EGD or PRNGD) will automatically
+ be queried.
+ The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
+ /etc/entropy will be queried once each in this sequence, querying stops
+ when enough entropy was collected without querying more sockets.
+
+ *Lutz Jaenicke*
+
+ * Change the Unix RAND_poll() variant to be able to poll several
+ random devices, as specified by DEVRANDOM, until a sufficient amount
+ of data has been collected. We spend at most 10 ms on each file
+ (select timeout) and read in non-blocking mode. DEVRANDOM now
+ defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
+ (previously it was just the string "/dev/urandom"), so on typical
+ platforms the 10 ms delay will never occur.
+ Also separate out the Unix variant to its own file, rand_unix.c.
+ For VMS, there's a currently-empty rand_vms.c.
+
+ *Richard Levitte*
+
+ * Move OCSP client related routines to ocsp_cl.c. These
+ provide utility functions which an application needing
+ to issue a request to an OCSP responder and analyse the
+ response will typically need: as opposed to those which an
+ OCSP responder itself would need which will be added later.
+
+ OCSP_request_sign() signs an OCSP request with an API similar
+ to PKCS7_sign(). OCSP_response_status() returns status of OCSP
+ response. OCSP_response_get1_basic() extracts basic response
+ from response. OCSP_resp_find_status(): finds and extracts status
+ information from an OCSP_CERTID structure (which will be created
+ when the request structure is built). These are built from lower
+ level functions which work on OCSP_SINGLERESP structures but
+ won't normally be used unless the application wishes to examine
+ extensions in the OCSP response for example.
+
+ Replace nonce routines with a pair of functions.
+ OCSP_request_add1_nonce() adds a nonce value and optionally
+ generates a random value. OCSP_check_nonce() checks the
+ validity of the nonce in an OCSP response.
+
+ *Steve Henson*
+
+ * Change function OCSP_request_add() to OCSP_request_add0_id().
+ This doesn't copy the supplied OCSP_CERTID and avoids the
+ need to free up the newly created id. Change return type
+ to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
+ This can then be used to add extensions to the request.
+ Deleted OCSP_request_new(), since most of its functionality
+ is now in OCSP_REQUEST_new() (and the case insensitive name
+ clash) apart from the ability to set the request name which
+ will be added elsewhere.
+
+ *Steve Henson*
+
+ * Update OCSP API. Remove obsolete extensions argument from
+ various functions. Extensions are now handled using the new
+ OCSP extension code. New simple OCSP HTTP function which
+ can be used to send requests and parse the response.
+
+ *Steve Henson*
+
+ * Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
+ ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
+ uses the special reorder version of SET OF to sort the attributes
+ and reorder them to match the encoded order. This resolves a long
+ standing problem: a verify on a PKCS7 structure just after signing
+ it used to fail because the attribute order did not match the
+ encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
+ it uses the received order. This is necessary to tolerate some broken
+ software that does not order SET OF. This is handled by encoding
+ as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
+ to produce the required SET OF.
+
+ *Steve Henson*
+
+ * Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
+ OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
+ files to get correct declarations of the ASN.1 item variables.
+
+ *Richard Levitte*
+
+ * Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
+ PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
+ asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
+ NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
+ New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
+ ASN1_ITEM and no wrapper functions.
+
+ *Steve Henson*
+
+ * New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
+ replace the old function pointer based I/O routines. Change most of
+ the *_d2i_bio() and *_d2i_fp() functions to use these.
+
+ *Steve Henson*
+
+ * Enhance mkdef.pl to be more accepting about spacing in C preprocessor
+ lines, recognize more "algorithms" that can be deselected, and make
+ it complain about algorithm deselection that isn't recognised.
+
+ *Richard Levitte*
+
+ * New ASN1 functions to handle dup, sign, verify, digest, pack and
+ unpack operations in terms of ASN1_ITEM. Modify existing wrappers
+ to use new functions. Add NO_ASN1_OLD which can be set to remove
+ some old style ASN1 functions: this can be used to determine if old
+ code will still work when these eventually go away.
+
+ *Steve Henson*
+
+ * New extension functions for OCSP structures, these follow the
+ same conventions as certificates and CRLs.
+
+ *Steve Henson*
+
+ * New function X509V3_add1_i2d(). This automatically encodes and
+ adds an extension. Its behaviour can be customised with various
+ flags to append, replace or delete. Various wrappers added for
+ certificates and CRLs.
+
+ *Steve Henson*
+
+ * Fix to avoid calling the underlying ASN1 print routine when
+ an extension cannot be parsed. Correct a typo in the
+ OCSP_SERVICELOC extension. Tidy up print OCSP format.
+
+ *Steve Henson*
+
+ * Make mkdef.pl parse some of the ASN1 macros and add appropriate
+ entries for variables.
+
+ *Steve Henson*
+
+ * Add functionality to apps/openssl.c for detecting locking
+ problems: As the program is single-threaded, all we have
+ to do is register a locking callback using an array for
+ storing which locks are currently held by the program.
+
+ *Bodo Moeller*
+
+ * Use a lock around the call to CRYPTO_get_ex_new_index() in
+ SSL_get_ex_data_X509_STORE_idx(), which is used in
+ ssl_verify_cert_chain() and thus can be called at any time
+ during TLS/SSL handshakes so that thread-safety is essential.
+ Unfortunately, the ex_data design is not at all suited
+ for multi-threaded use, so it probably should be abolished.
+
+ *Bodo Moeller*
+
+ * Added Broadcom "ubsec" ENGINE to OpenSSL.
+
+ *Broadcom, tweaked and integrated by Geoff Thorpe*
+
+ * Move common extension printing code to new function
+ X509V3_print_extensions(). Reorganise OCSP print routines and
+ implement some needed OCSP ASN1 functions. Add OCSP extensions.
+
+ *Steve Henson*
+
+ * New function X509_signature_print() to remove duplication in some
+ print routines.
+
+ *Steve Henson*
+
+ * Add a special meaning when SET OF and SEQUENCE OF flags are both
+ set (this was treated exactly the same as SET OF previously). This
+ is used to reorder the STACK representing the structure to match the
+ encoding. This will be used to get round a problem where a PKCS7
+ structure which was signed could not be verified because the STACK
+ order did not reflect the encoded order.
+
+ *Steve Henson*
+
+ * Reimplement the OCSP ASN1 module using the new code.
+
+ *Steve Henson*
+
+ * Update the X509V3 code to permit the use of an ASN1_ITEM structure
+ for its ASN1 operations. The old style function pointers still exist
+ for now but they will eventually go away.
+
+ *Steve Henson*
+
+ * Merge in replacement ASN1 code from the ASN1 branch. This almost
+ completely replaces the old ASN1 functionality with a table driven
+ encoder and decoder which interprets an ASN1_ITEM structure describing
+ the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
+ largely maintained. Almost all of the old asn1_mac.h macro based ASN1
+ has also been converted to the new form.
+
+ *Steve Henson*
+
+ * Change BN_mod_exp_recp so that negative moduli are tolerated
+ (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
+ so that BN_mod_exp_mont and BN_mod_exp_mont_word work
+ for negative moduli.
+
+ *Bodo Moeller*
+
+ * Fix BN_uadd and BN_usub: Always return non-negative results instead
+ of not touching the result's sign bit.
+
+ *Bodo Moeller*
+
+ * BN_div bugfix: If the result is 0, the sign (res->neg) must not be
+ set.
+
+ *Bodo Moeller*
+
+ * Changed the LHASH code to use prototypes for callbacks, and created
+ macros to declare and implement thin (optionally static) functions
+ that provide type-safety and avoid function pointer casting for the
+ type-specific callbacks.
+
+ *Geoff Thorpe*
+
+ * Added Kerberos Cipher Suites to be used with TLS, as written in
+ RFC 2712.
+ *Veers Staats <staatsvr@asc.hpc.mil>,
+ Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte*
+
+ * Reformat the FAQ so the different questions and answers can be divided
+ in sections depending on the subject.
+
+ *Richard Levitte*
+
+ * Have the zlib compression code load ZLIB.DLL dynamically under
+ Windows.
+
+ *Richard Levitte*
+
+ * New function BN_mod_sqrt for computing square roots modulo a prime
+ (using the probabilistic Tonelli-Shanks algorithm unless
+ p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
+ be handled deterministically).
+
+ *Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller*
+
+ * Make BN_mod_inverse faster by explicitly handling small quotients
+ in the Euclid loop. (Speed gain about 20% for small moduli [256 or
+ 512 bits], about 30% for larger ones [1024 or 2048 bits].)
+
+ *Bodo Moeller*
+
+ * New function BN_kronecker.
+
+ *Bodo Moeller*
+
+ * Fix BN_gcd so that it works on negative inputs; the result is
+ positive unless both parameters are zero.
+ Previously something reasonably close to an infinite loop was
+ possible because numbers could be growing instead of shrinking
+ in the implementation of Euclid's algorithm.
+
+ *Bodo Moeller*
+
+ * Fix BN_is_word() and BN_is_one() macros to take into account the
+ sign of the number in question.
+
+ Fix BN_is_word(a,w) to work correctly for w == 0.
+
+ The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
+ because its test if the absolute value of 'a' equals 'w'.
+ Note that BN_abs_is_word does *not* handle w == 0 reliably;
+ it exists mostly for use in the implementations of BN_is_zero(),
+ BN_is_one(), and BN_is_word().
+
+ *Bodo Moeller*
+
+ * New function BN_swap.
+
+ *Bodo Moeller*
+
+ * Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
+ the exponentiation functions are more likely to produce reasonable
+ results on negative inputs.
+
+ *Bodo Moeller*
+
+ * Change BN_mod_mul so that the result is always non-negative.
+ Previously, it could be negative if one of the factors was negative;
+ I don't think anyone really wanted that behaviour.
+
+ *Bodo Moeller*
+
+ * Move BN_mod_... functions into new file crypto/bn/bn_mod.c
+ (except for exponentiation, which stays in crypto/bn/bn_exp.c,
+ and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
+ and add new functions:
+
+ BN_nnmod
+ BN_mod_sqr
+ BN_mod_add
+ BN_mod_add_quick
+ BN_mod_sub
+ BN_mod_sub_quick
+ BN_mod_lshift1
+ BN_mod_lshift1_quick
+ BN_mod_lshift
+ BN_mod_lshift_quick
+
+ These functions always generate non-negative results.
+
+ BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
+ such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
+
+ BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
+ BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
+ be reduced modulo m.
+
+ *Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller*
+
+f 0
+ The following entry accidentally appeared in the CHANGES file
+ distributed with OpenSSL 0.9.7. The modifications described in
+ it do *not* apply to OpenSSL 0.9.7.
+
+ * Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
+ was actually never needed) and in BN_mul(). The removal in BN_mul()
+ required a small change in bn_mul_part_recursive() and the addition
+ of the functions bn_cmp_part_words(), bn_sub_part_words() and
+ bn_add_part_words(), which do the same thing as bn_cmp_words(),
+ bn_sub_words() and bn_add_words() except they take arrays with
+ differing sizes.
+
+ *Richard Levitte*
+ndif
+
+ * In 'openssl passwd', verify passwords read from the terminal
+ unless the '-salt' option is used (which usually means that
+ verification would just waste user's time since the resulting
+ hash is going to be compared with some given password hash)
+ or the new '-noverify' option is used.
+
+ This is an incompatible change, but it does not affect
+ non-interactive use of 'openssl passwd' (passwords on the command
+ line, '-stdin' option, '-in ...' option) and thus should not
+ cause any problems.
+
+ *Bodo Moeller*
+
+ * Remove all references to RSAref, since there's no more need for it.
+
+ *Richard Levitte*
+
+ * Make DSO load along a path given through an environment variable
+ (SHLIB_PATH) with shl_load().
+
+ *Richard Levitte*
+
+ * Constify the ENGINE code as a result of BIGNUM constification.
+ Also constify the RSA code and most things related to it. In a
+ few places, most notable in the depth of the ASN.1 code, ugly
+ casts back to non-const were required (to be solved at a later
+ time)
+
+ *Richard Levitte*
+
+ * Make it so the openssl application has all engines loaded by default.
+
+ *Richard Levitte*
+
+ * Constify the BIGNUM routines a little more.
+
+ *Richard Levitte*
+
+ * Add the following functions:
+
+ ENGINE_load_cswift()
+ ENGINE_load_chil()
+ ENGINE_load_atalla()
+ ENGINE_load_nuron()
+ ENGINE_load_builtin_engines()
+
+ That way, an application can itself choose if external engines that
+ are built-in in OpenSSL shall ever be used or not. The benefit is
+ that applications won't have to be linked with libdl or other dso
+ libraries unless it's really needed.
+
+ Changed 'openssl engine' to load all engines on demand.
+ Changed the engine header files to avoid the duplication of some
+ declarations (they differed!).
+
+ *Richard Levitte*
+
+ * 'openssl engine' can now list capabilities.
+
+ *Richard Levitte*
+
+ * Better error reporting in 'openssl engine'.
+
+ *Richard Levitte*
+
+ * Never call load_dh_param(NULL) in s_server.
+
+ *Bodo Moeller*
+
+ * Add engine application. It can currently list engines by name and
+ identity, and test if they are actually available.
+
+ *Richard Levitte*
+
+ * Improve RPM specification file by forcing symbolic linking and making
+ sure the installed documentation is also owned by root.root.
+
+ *Damien Miller <djm@mindrot.org>*
+
+ * Give the OpenSSL applications more possibilities to make use of
+ keys (public as well as private) handled by engines.
+
+ *Richard Levitte*
+
+ * Add OCSP code that comes from CertCo.
+
+ *Richard Levitte*
+
+ * Add VMS support for the Rijndael code.
+
+ *Richard Levitte*
+
+ * Added untested support for Nuron crypto accelerator.
+
+ *Ben Laurie*
+
+ * Add support for external cryptographic devices. This code was
+ previously distributed separately as the "engine" branch.
+
+ *Geoff Thorpe, Richard Levitte*
+
+ * Rework the filename-translation in the DSO code. It is now possible to
+ have far greater control over how a "name" is turned into a filename
+ depending on the operating environment and any oddities about the
+ different shared library filenames on each system.
+
+ *Geoff Thorpe*
+
+ * Support threads on FreeBSD-elf in Configure.
+
+ *Richard Levitte*
+
+ * Fix for SHA1 assembly problem with MASM: it produces
+ warnings about corrupt line number information when assembling
+ with debugging information. This is caused by the overlapping
+ of two sections.
+
+ *Bernd Matthes <mainbug@celocom.de>, Steve Henson*
+
+ * NCONF changes.
+ NCONF_get_number() has no error checking at all. As a replacement,
+ NCONF_get_number_e() is defined (_e for "error checking") and is
+ promoted strongly. The old NCONF_get_number is kept around for
+ binary backward compatibility.
+ Make it possible for methods to load from something other than a BIO,
+ by providing a function pointer that is given a name instead of a BIO.
+ For example, this could be used to load configuration data from an
+ LDAP server.
+
+ *Richard Levitte*
+
+ * Fix for non blocking accept BIOs. Added new I/O special reason
+ BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
+ with non blocking I/O was not possible because no retry code was
+ implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
+ this case.
+
+ *Steve Henson*
+
+ * Added the beginnings of Rijndael support.
+
+ *Ben Laurie*
+
+ * Fix for bug in DirectoryString mask setting. Add support for
+ X509_NAME_print_ex() in 'req' and X509_print_ex() function
+ to allow certificate printing to more controllable, additional
+ 'certopt' option to 'x509' to allow new printing options to be
+ set.
+
+ *Steve Henson*
+
+ * Clean old EAY MD5 hack from e_os.h.
+
+ *Richard Levitte*
+
+### Changes between 0.9.6l and 0.9.6m [17 Mar 2004] ###
+
+ * Fix null-pointer assignment in do_change_cipher_spec() revealed
+ by using the Codenomicon TLS Test Tool (CVE-2004-0079)
+
+ *Joe Orton, Steve Henson*
+
+### Changes between 0.9.6k and 0.9.6l [04 Nov 2003] ###
+
+ * Fix additional bug revealed by the NISCC test suite:
+
+ Stop bug triggering large recursion when presented with
+ certain ASN.1 tags (CVE-2003-0851)
+
+ *Steve Henson*
+
+### Changes between 0.9.6j and 0.9.6k [30 Sep 2003] ###
+
+ * Fix various bugs revealed by running the NISCC test suite:
+
+ Stop out of bounds reads in the ASN1 code when presented with
+ invalid tags (CVE-2003-0543 and CVE-2003-0544).
+
+ If verify callback ignores invalid public key errors don't try to check
+ certificate signature with the NULL public key.
+
+
+ *Steve Henson*
+
+ * In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
+ if the server requested one: as stated in TLS 1.0 and SSL 3.0
+ specifications.
+
+ *Steve Henson*
+
+ * In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
+ extra data after the compression methods not only for TLS 1.0
+ but also for SSL 3.0 (as required by the specification).
+
+ *Bodo Moeller; problem pointed out by Matthias Loepfe*
+
+ * Change X509_certificate_type() to mark the key as exported/exportable
+ when it's 512 *bits* long, not 512 bytes.
+
+ *Richard Levitte*
+
+### Changes between 0.9.6i and 0.9.6j [10 Apr 2003] ###
+
+ * Countermeasure against the Klima-Pokorny-Rosa extension of
+ Bleichbacher's attack on PKCS #1 v1.5 padding: treat
+ a protocol version number mismatch like a decryption error
+ in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
+
+ *Bodo Moeller*
+
+ * Turn on RSA blinding by default in the default implementation
+ to avoid a timing attack. Applications that don't want it can call
+ RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
+ They would be ill-advised to do so in most cases.
+
+ *Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller*
+
+ * Change RSA blinding code so that it works when the PRNG is not
+ seeded (in this case, the secret RSA exponent is abused as
+ an unpredictable seed -- if it is not unpredictable, there
+ is no point in blinding anyway). Make RSA blinding thread-safe
+ by remembering the creator's thread ID in rsa->blinding and
+ having all other threads use local one-time blinding factors
+ (this requires more computation than sharing rsa->blinding, but
+ avoids excessive locking; and if an RSA object is not shared
+ between threads, blinding will still be very fast).
+
+ *Bodo Moeller*
+
+### Changes between 0.9.6h and 0.9.6i [19 Feb 2003] ###
+
+ * In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
+ via timing by performing a MAC computation even if incorrect
+ block cipher padding has been found. This is a countermeasure
+ against active attacks where the attacker has to distinguish
+ between bad padding and a MAC verification error. (CVE-2003-0078)
+
+ *Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
+ Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
+ Martin Vuagnoux (EPFL, Ilion)*
+
+### Changes between 0.9.6g and 0.9.6h [5 Dec 2002] ###
+
+ * New function OPENSSL_cleanse(), which is used to cleanse a section of
+ memory from its contents. This is done with a counter that will
+ place alternating values in each byte. This can be used to solve
+ two issues: 1) the removal of calls to memset() by highly optimizing
+ compilers, and 2) cleansing with other values than 0, since those can
+ be read through on certain media, for example a swap space on disk.
+
+ *Geoff Thorpe*
+
+ * Bugfix: client side session caching did not work with external caching,
+ because the session->cipher setting was not restored when reloading
+ from the external cache. This problem was masked, when
+ SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
+ (Found by Steve Haslam <steve@araqnid.ddts.net>.)
+
+ *Lutz Jaenicke*
+
+ * Fix client_certificate (ssl/s2_clnt.c): The permissible total
+ length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
+
+ *Zeev Lieber <zeev-l@yahoo.com>*
+
+ * Undo an undocumented change introduced in 0.9.6e which caused
+ repeated calls to OpenSSL_add_all_ciphers() and
+ OpenSSL_add_all_digests() to be ignored, even after calling
+ EVP_cleanup().
+
+ *Richard Levitte*
+
+ * Change the default configuration reader to deal with last line not
+ being properly terminated.
+
+ *Richard Levitte*
+
+ * Change X509_NAME_cmp() so it applies the special rules on handling
+ DN values that are of type PrintableString, as well as RDNs of type
+ emailAddress where the value has the type ia5String.
+
+ *stefank@valicert.com via Richard Levitte*
+
+ * Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
+ the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
+ doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
+ the bitwise-OR of the two for use by the majority of applications
+ wanting this behaviour, and update the docs. The documented
+ behaviour and actual behaviour were inconsistent and had been
+ changing anyway, so this is more a bug-fix than a behavioural
+ change.
+
+ *Geoff Thorpe, diagnosed by Nadav Har'El*
+
+ * Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
+ (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
+
+ *Bodo Moeller*
+
+ * Fix initialization code race conditions in
+ SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
+ SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
+ SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
+ TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
+ ssl2_get_cipher_by_char(),
+ ssl3_get_cipher_by_char().
+
+ *Patrick McCormick <patrick@tellme.com>, Bodo Moeller*
+
+ * Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
+ the cached sessions are flushed, as the remove_cb() might use ex_data
+ contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
+ (see [openssl.org #212]).
+
+ *Geoff Thorpe, Lutz Jaenicke*
+
+ * Fix typo in OBJ_txt2obj which incorrectly passed the content
+ length, instead of the encoding length to d2i_ASN1_OBJECT.
+
+ *Steve Henson*
+
+### Changes between 0.9.6f and 0.9.6g [9 Aug 2002] ###
+
+ * [In 0.9.6g-engine release:]
+ Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
+
+ *Lynn Gazis <lgazis@rainbow.com>*
+
+### Changes between 0.9.6e and 0.9.6f [8 Aug 2002] ###
+
+ * Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
+ and get fix the header length calculation.
+ *Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
+ Alon Kantor <alonk@checkpoint.com> (and others),
+ Steve Henson*
+
+ * Use proper error handling instead of 'assertions' in buffer
+ overflow checks added in 0.9.6e. This prevents DoS (the
+ assertions could call abort()).
+
+ *Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller*
+
+### Changes between 0.9.6d and 0.9.6e [30 Jul 2002] ###
+
+ * Add various sanity checks to asn1_get_length() to reject
+ the ASN1 length bytes if they exceed sizeof(long), will appear
+ negative or the content length exceeds the length of the
+ supplied buffer.
+
+ *Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>*
+
+ * Fix cipher selection routines: ciphers without encryption had no flags
+ for the cipher strength set and where therefore not handled correctly
+ by the selection routines (PR #130).
+
+ *Lutz Jaenicke*
+
+ * Fix EVP_dsa_sha macro.
+
+ *Nils Larsch*
+
+ * New option
+ SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
+ for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
+ that was added in OpenSSL 0.9.6d.
+
+ As the countermeasure turned out to be incompatible with some
+ broken SSL implementations, the new option is part of SSL_OP_ALL.
+ SSL_OP_ALL is usually employed when compatibility with weird SSL
+ implementations is desired (e.g. '-bugs' option to 's_client' and
+ 's_server'), so the new option is automatically set in many
+ applications.
+
+ *Bodo Moeller*
+
+ * Changes in security patch:
+
+ Changes marked "(CHATS)" were sponsored by the Defense Advanced
+ Research Projects Agency (DARPA) and Air Force Research Laboratory,
+ Air Force Materiel Command, USAF, under agreement number
+ F30602-01-2-0537.
+
+ * Add various sanity checks to asn1_get_length() to reject
+ the ASN1 length bytes if they exceed sizeof(long), will appear
+ negative or the content length exceeds the length of the
+ supplied buffer. (CVE-2002-0659)
+
+ *Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>*
+
+ * Assertions for various potential buffer overflows, not known to
+ happen in practice.
+
+ *Ben Laurie (CHATS)*
+
+ * Various temporary buffers to hold ASCII versions of integers were
+ too small for 64 bit platforms. (CVE-2002-0655)
+ *Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
+
+ * Remote buffer overflow in SSL3 protocol - an attacker could
+ supply an oversized session ID to a client. (CVE-2002-0656)
+
+ [Ben Laurie (CHATS)*
+
+ * Remote buffer overflow in SSL2 protocol - an attacker could
+ supply an oversized client master key. (CVE-2002-0656)
+
+ *Ben Laurie (CHATS)*
+
+### Changes between 0.9.6c and 0.9.6d [9 May 2002] ###
+
+ * Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
+ encoded as NULL) with id-dsa-with-sha1.
+
+ *Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller*
+
+ * Check various X509_...() return values in apps/req.c.
+
+ *Nils Larsch <nla@trustcenter.de>*
+
+ * Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
+ an end-of-file condition would erroneously be flagged, when the CRLF
+ was just at the end of a processed block. The bug was discovered when
+ processing data through a buffering memory BIO handing the data to a
+ BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
+ <ptsekov@syntrex.com> and Nedelcho Stanev.
+
+ *Lutz Jaenicke*
+
+ * Implement a countermeasure against a vulnerability recently found
+ in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
+ before application data chunks to avoid the use of known IVs
+ with data potentially chosen by the attacker.
+
+ *Bodo Moeller*
+
+ * Fix length checks in ssl3_get_client_hello().
+
+ *Bodo Moeller*
+
+ * TLS/SSL library bugfix: use s->s3->in_read_app_data differently
+ to prevent ssl3_read_internal() from incorrectly assuming that
+ ssl3_read_bytes() found application data while handshake
+ processing was enabled when in fact s->s3->in_read_app_data was
+ merely automatically cleared during the initial handshake.
+
+ *Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>*
+
+ * Fix object definitions for Private and Enterprise: they were not
+ recognized in their shortname (=lowercase) representation. Extend
+ obj_dat.pl to issue an error when using undefined keywords instead
+ of silently ignoring the problem (Svenning Sorensen
+ <sss@sss.dnsalias.net>).
+
+ *Lutz Jaenicke*
+
+ * Fix DH_generate_parameters() so that it works for 'non-standard'
+ generators, i.e. generators other than 2 and 5. (Previously, the
+ code did not properly initialise the 'add' and 'rem' values to
+ BN_generate_prime().)
+
+ In the new general case, we do not insist that 'generator' is
+ actually a primitive root: This requirement is rather pointless;
+ a generator of the order-q subgroup is just as good, if not
+ better.
+
+ *Bodo Moeller*
+
+ * Map new X509 verification errors to alerts. Discovered and submitted by
+ Tom Wu <tom@arcot.com>.
+
+ *Lutz Jaenicke*
+
+ * Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
+ returning non-zero before the data has been completely received
+ when using non-blocking I/O.
+
+ *Bodo Moeller; problem pointed out by John Hughes*
+
+ * Some of the ciphers missed the strength entry (SSL_LOW etc).
+
+ *Ben Laurie, Lutz Jaenicke*
+
+ * Fix bug in SSL_clear(): bad sessions were not removed (found by
+ Yoram Zahavi <YoramZ@gilian.com>).
+
+ *Lutz Jaenicke*
+
+ * Add information about CygWin 1.3 and on, and preserve proper
+ configuration for the versions before that.
+
+ *Corinna Vinschen <vinschen@redhat.com> and Richard Levitte*
+
+ * Make removal from session cache (SSL_CTX_remove_session()) more robust:
+ check whether we deal with a copy of a session and do not delete from
+ the cache in this case. Problem reported by "Izhar Shoshani Levi"
+ <izhar@checkpoint.com>.
+
+ *Lutz Jaenicke*
+
+ * Do not store session data into the internal session cache, if it
+ is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
+ flag is set). Proposed by Aslam <aslam@funk.com>.
+
+ *Lutz Jaenicke*
+
+ * Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
+ value is 0.
+
+ *Richard Levitte*
+
+ * [In 0.9.6d-engine release:]
+ Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
+
+ *Toomas Kiisk <vix@cyber.ee> via Richard Levitte*
+
+ * Add the configuration target linux-s390x.
+
+ *Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte*
+
+ * The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
+ ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
+ variable as an indication that a ClientHello message has been
+ received. As the flag value will be lost between multiple
+ invocations of ssl3_accept when using non-blocking I/O, the
+ function may not be aware that a handshake has actually taken
+ place, thus preventing a new session from being added to the
+ session cache.
+
+ To avoid this problem, we now set s->new_session to 2 instead of
+ using a local variable.
+
+ *Lutz Jaenicke, Bodo Moeller*
+
+ * Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
+ if the SSL_R_LENGTH_MISMATCH error is detected.
+
+ *Geoff Thorpe, Bodo Moeller*
+
+ * New 'shared_ldflag' column in Configure platform table.
+
+ *Richard Levitte*
+
+ * Fix EVP_CIPHER_mode macro.
+
+ *"Dan S. Camper" <dan@bti.net>*
+
+ * Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
+ type, we must throw them away by setting rr->length to 0.
+
+ *D P Chang <dpc@qualys.com>*
+
+### Changes between 0.9.6b and 0.9.6c [21 dec 2001] ###
+
+ * Fix BN_rand_range bug pointed out by Dominikus Scherkl
+ <Dominikus.Scherkl@biodata.com>. (The previous implementation
+ worked incorrectly for those cases where range = 10..._2 and
+ 3*range is two bits longer than range.)
+
+ *Bodo Moeller*
+
+ * Only add signing time to PKCS7 structures if it is not already
+ present.
+
+ *Steve Henson*
+
+ * Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
+ OBJ_ld_ce should be OBJ_id_ce.
+ Also some ip-pda OIDs in crypto/objects/objects.txt were
+ incorrect (cf. RFC 3039).
+
+ *Matt Cooper, Frederic Giudicelli, Bodo Moeller*
+
+ * Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
+ returns early because it has nothing to do.
+
+ *Andy Schneider <andy.schneider@bjss.co.uk>*
+
+ * [In 0.9.6c-engine release:]
+ Fix mutex callback return values in crypto/engine/hw_ncipher.c.
+
+ *Andy Schneider <andy.schneider@bjss.co.uk>*
+
+ * [In 0.9.6c-engine release:]
+ Add support for Cryptographic Appliance's keyserver technology.
+ (Use engine 'keyclient')
+
+ *Cryptographic Appliances and Geoff Thorpe*
+
+ * Add a configuration entry for OS/390 Unix. The C compiler 'c89'
+ is called via tools/c89.sh because arguments have to be
+ rearranged (all '-L' options must appear before the first object
+ modules).
+
+ *Richard Shapiro <rshapiro@abinitio.com>*
+
+ * [In 0.9.6c-engine release:]
+ Add support for Broadcom crypto accelerator cards, backported
+ from 0.9.7.
+
+ *Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox*
+
+ * [In 0.9.6c-engine release:]
+ Add support for SureWare crypto accelerator cards from
+ Baltimore Technologies. (Use engine 'sureware')
+
+ *Baltimore Technologies and Mark Cox*
+
+ * [In 0.9.6c-engine release:]
+ Add support for crypto accelerator cards from Accelerated
+ Encryption Processing, www.aep.ie. (Use engine 'aep')
+
+ *AEP Inc. and Mark Cox*
+
+ * Add a configuration entry for gcc on UnixWare.
+
+ *Gary Benson <gbenson@redhat.com>*
+
+ * Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
+ messages are stored in a single piece (fixed-length part and
+ variable-length part combined) and fix various bugs found on the way.
+
+ *Bodo Moeller*
+
+ * Disable caching in BIO_gethostbyname(), directly use gethostbyname()
+ instead. BIO_gethostbyname() does not know what timeouts are
+ appropriate, so entries would stay in cache even when they have
+ become invalid.
+ *Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
+
+ * Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
+ faced with a pathologically small ClientHello fragment that does
+ not contain client_version: Instead of aborting with an error,
+ simply choose the highest available protocol version (i.e.,
+ TLS 1.0 unless it is disabled). In practice, ClientHello
+ messages are never sent like this, but this change gives us
+ strictly correct behaviour at least for TLS.
+
+ [Bodo Moeller*
+
+ * Fix SSL handshake functions and SSL_clear() such that SSL_clear()
+ never resets s->method to s->ctx->method when called from within
+ one of the SSL handshake functions.
+
+ *Bodo Moeller; problem pointed out by Niko Baric*
+
+ * In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
+ (sent using the client's version number) if client_version is
+ smaller than the protocol version in use. Also change
+ ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
+ the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
+ the client will at least see that alert.
+
+ *Bodo Moeller*
+
+ * Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
+ correctly.
+
+ *Bodo Moeller*
+
+ * Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
+ client receives HelloRequest while in a handshake.
+
+ *Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>*
+
+ * Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
+ should end in 'break', not 'goto end' which circumvents various
+ cleanups done in state SSL_ST_OK. But session related stuff
+ must be disabled for SSL_ST_OK in the case that we just sent a
+ HelloRequest.
+
+ Also avoid some overhead by not calling ssl_init_wbio_buffer()
+ before just sending a HelloRequest.
+
+ *Bodo Moeller, Eric Rescorla <ekr@rtfm.com>*
+
+ * Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
+ reveal whether illegal block cipher padding was found or a MAC
+ verification error occurred. (Neither SSLerr() codes nor alerts
+ are directly visible to potential attackers, but the information
+ may leak via logfiles.)
+
+ Similar changes are not required for the SSL 2.0 implementation
+ because the number of padding bytes is sent in clear for SSL 2.0,
+ and the extra bytes are just ignored. However ssl/s2_pkt.c
+ failed to verify that the purported number of padding bytes is in
+ the legal range.
+
+ *Bodo Moeller*
+
+ * Add OpenUNIX-8 support including shared libraries
+ (Boyd Lynn Gerber <gerberb@zenez.com>).
+
+ *Lutz Jaenicke*
+
+ * Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
+ 'wristwatch attack' using huge encoding parameters (cf.
+ James H. Manger's CRYPTO 2001 paper). Note that the
+ RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
+ encoding parameters and hence was not vulnerable.
+
+ *Bodo Moeller*
+
+ * BN_sqr() bug fix.
+
+ *Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>*
+
+ * Rabin-Miller test analyses assume uniformly distributed witnesses,
+ so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
+ followed by modular reduction.
+
+ *Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>*
+
+ * Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
+ equivalent based on BN_pseudo_rand() instead of BN_rand().
+
+ *Bodo Moeller*
+
+ * s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
+ This function was broken, as the check for a new client hello message
+ to handle SGC did not allow these large messages.
+ (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
+
+ *Lutz Jaenicke*
+
+ * Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
+
+ *Lutz Jaenicke*
+
+ * Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
+ for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
+
+ *Lutz Jaenicke*
+
+ * Rework the configuration and shared library support for Tru64 Unix.
+ The configuration part makes use of modern compiler features and
+ still retains old compiler behavior for those that run older versions
+ of the OS. The shared library support part includes a variant that
+ uses the RPATH feature, and is available through the special
+ configuration target "alpha-cc-rpath", which will never be selected
+ automatically.
+
+ *Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte*
+
+ * In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
+ with the same message size as in ssl3_get_certificate_request().
+ Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
+ messages might inadvertently be reject as too long.
+
+ *Petr Lampa <lampa@fee.vutbr.cz>*
+
+ * Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
+
+ *Andy Polyakov*
+
+ * Modified SSL library such that the verify_callback that has been set
+ specificly for an SSL object with SSL_set_verify() is actually being
+ used. Before the change, a verify_callback set with this function was
+ ignored and the verify_callback() set in the SSL_CTX at the time of
+ the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
+ to allow the necessary settings.
+
+ *Lutz Jaenicke*
+
+ * Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
+ explicitly to NULL, as at least on Solaris 8 this seems not always to be
+ done automatically (in contradiction to the requirements of the C
+ standard). This made problems when used from OpenSSH.
+
+ *Lutz Jaenicke*
+
+ * In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
+ dh->length and always used
+
+ BN_rand_range(priv_key, dh->p).
+
+ BN_rand_range() is not necessary for Diffie-Hellman, and this
+ specific range makes Diffie-Hellman unnecessarily inefficient if
+ dh->length (recommended exponent length) is much smaller than the
+ length of dh->p. We could use BN_rand_range() if the order of
+ the subgroup was stored in the DH structure, but we only have
+ dh->length.
+
+ So switch back to
+
+ BN_rand(priv_key, l, ...)
+
+ where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
+ otherwise.
+
+ *Bodo Moeller*
+
+ * In
+
+ RSA_eay_public_encrypt
+ RSA_eay_private_decrypt
+ RSA_eay_private_encrypt (signing)
+ RSA_eay_public_decrypt (signature verification)
+
+ (default implementations for RSA_public_encrypt,
+ RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
+ always reject numbers >= n.
+
+ *Bodo Moeller*
+
+ * In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
+ to synchronize access to 'locking_thread'. This is necessary on
+ systems where access to 'locking_thread' (an 'unsigned long'
+ variable) is not atomic.
+
+ *Bodo Moeller*
+
+ * In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
+ *before* setting the 'crypto_lock_rand' flag. The previous code had
+ a race condition if 0 is a valid thread ID.
+
+ *Travis Vitek <vitek@roguewave.com>*
+
+ * Add support for shared libraries under Irix.
+
+ *Albert Chin-A-Young <china@thewrittenword.com>*
+
+ * Add configuration option to build on Linux on both big-endian and
+ little-endian MIPS.
+
+ *Ralf Baechle <ralf@uni-koblenz.de>*
+
+ * Add the possibility to create shared libraries on HP-UX.
+
+ *Richard Levitte*
+
+### Changes between 0.9.6a and 0.9.6b [9 Jul 2001] ###
+
+ * Change ssleay_rand_bytes (crypto/rand/md_rand.c)
+ to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
+ Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
+ PRNG state recovery was possible based on the output of
+ one PRNG request appropriately sized to gain knowledge on
+ 'md' followed by enough consecutive 1-byte PRNG requests
+ to traverse all of 'state'.
+
+ 1. When updating 'md_local' (the current thread's copy of 'md')
+ during PRNG output generation, hash all of the previous
+ 'md_local' value, not just the half used for PRNG output.
+
+ 2. Make the number of bytes from 'state' included into the hash
+ independent from the number of PRNG bytes requested.
+
+ The first measure alone would be sufficient to avoid
+ Markku-Juhani's attack. (Actually it had never occurred
+ to me that the half of 'md_local' used for chaining was the
+ half from which PRNG output bytes were taken -- I had always
+ assumed that the secret half would be used.) The second
+ measure makes sure that additional data from 'state' is never
+ mixed into 'md_local' in small portions; this heuristically
+ further strengthens the PRNG.
+
+ *Bodo Moeller*
+
+ * Fix crypto/bn/asm/mips3.s.
+
+ *Andy Polyakov*
+
+ * When only the key is given to "enc", the IV is undefined. Print out
+ an error message in this case.
+
+ *Lutz Jaenicke*
+
+ * Handle special case when X509_NAME is empty in X509 printing routines.
+
+ *Steve Henson*
+
+ * In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
+ positive and less than q.
+
+ *Bodo Moeller*
+
+ * Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
+ used: it isn't thread safe and the add_lock_callback should handle
+ that itself.
+
+ *Paul Rose <Paul.Rose@bridge.com>*
+
+ * Verify that incoming data obeys the block size in
+ ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
+
+ *Bodo Moeller*
+
+ * Fix OAEP check.
+
+ *Ulf Möller, Bodo Möller*
+
+ * The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
+ RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
+ when fixing the server behaviour for backwards-compatible 'client
+ hello' messages. (Note that the attack is impractical against
+ SSL 3.0 and TLS 1.0 anyway because length and version checking
+ means that the probability of guessing a valid ciphertext is
+ around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
+ paper.)
+
+ Before 0.9.5, the countermeasure (hide the error by generating a
+ random 'decryption result') did not work properly because
+ ERR_clear_error() was missing, meaning that SSL_get_error() would
+ detect the supposedly ignored error.
+
+ Both problems are now fixed.
+
+ *Bodo Moeller*
+
+ * In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
+ (previously it was 1024).
+
+ *Bodo Moeller*
+
+ * Fix for compatibility mode trust settings: ignore trust settings
+ unless some valid trust or reject settings are present.
+
+ *Steve Henson*
+
+ * Fix for blowfish EVP: its a variable length cipher.
+
+ *Steve Henson*
+
+ * Fix various bugs related to DSA S/MIME verification. Handle missing
+ parameters in DSA public key structures and return an error in the
+ DSA routines if parameters are absent.
+
+ *Steve Henson*
+
+ * In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
+ in the current directory if neither $RANDFILE nor $HOME was set.
+ RAND_file_name() in 0.9.6a returned NULL in this case. This has
+ caused some confusion to Windows users who haven't defined $HOME.
+ Thus RAND_file_name() is changed again: e_os.h can define a
+ DEFAULT_HOME, which will be used if $HOME is not set.
+ For Windows, we use "C:"; on other platforms, we still require
+ environment variables.
+
+ * Move 'if (!initialized) RAND_poll()' into regions protected by
+ CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
+ having multiple threads call RAND_poll() concurrently.
+
+ *Bodo Moeller*
+
+ * In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
+ combination of a flag and a thread ID variable.
+ Otherwise while one thread is in ssleay_rand_bytes (which sets the
+ flag), *other* threads can enter ssleay_add_bytes without obeying
+ the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
+ that they do not hold after the first thread unsets add_do_not_lock).
+
+ *Bodo Moeller*
+
+ * Change bctest again: '-x' expressions are not available in all
+ versions of 'test'.
+
+ *Bodo Moeller*
+
+### Changes between 0.9.6 and 0.9.6a [5 Apr 2001] ###
+
+ * Fix a couple of memory leaks in PKCS7_dataDecode()
+
+ *Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>*
+
+ * Change Configure and Makefiles to provide EXE_EXT, which will contain
+ the default extension for executables, if any. Also, make the perl
+ scripts that use symlink() to test if it really exists and use "cp"
+ if it doesn't. All this made OpenSSL compilable and installable in
+ CygWin.
+
+ *Richard Levitte*
+
+ * Fix for asn1_GetSequence() for indefinite length constructed data.
+ If SEQUENCE is length is indefinite just set c->slen to the total
+ amount of data available.
+
+ *Steve Henson, reported by shige@FreeBSD.org*
+
+ *This change does not apply to 0.9.7.*
+
+ * Change bctest to avoid here-documents inside command substitution
+ (workaround for FreeBSD /bin/sh bug).
+ For compatibility with Ultrix, avoid shell functions (introduced
+ in the bctest version that searches along $PATH).
+
+ *Bodo Moeller*
+
+ * Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
+ with des_encrypt() defined on some operating systems, like Solaris
+ and UnixWare.
+
+ *Richard Levitte*
+
+ * Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
+ On the Importance of Eliminating Errors in Cryptographic
+ Computations, J. Cryptology 14 (2001) 2, 101-119,
+ http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
+
+ *Ulf Moeller*
+
+ * MIPS assembler BIGNUM division bug fix.
+
+ *Andy Polyakov*
+
+ * Disabled incorrect Alpha assembler code.
+
+ *Richard Levitte*
+
+ * Fix PKCS#7 decode routines so they correctly update the length
+ after reading an EOC for the EXPLICIT tag.
+
+ *Steve Henson*
+
+ *This change does not apply to 0.9.7.*
+
+ * Fix bug in PKCS#12 key generation routines. This was triggered
+ if a 3DES key was generated with a 0 initial byte. Include
+ PKCS12_BROKEN_KEYGEN compilation option to retain the old
+ (but broken) behaviour.
+
+ *Steve Henson*
+
+ * Enhance bctest to search for a working bc along $PATH and print
+ it when found.
+
+ *Tim Rice <tim@multitalents.net> via Richard Levitte*
+
+ * Fix memory leaks in err.c: free err_data string if necessary;
+ don't write to the wrong index in ERR_set_error_data.
+
+ *Bodo Moeller*
+
+ * Implement ssl23_peek (analogous to ssl23_read), which previously
+ did not exist.
+
+ *Bodo Moeller*
+
+ * Replace rdtsc with _emit statements for VC++ version 5.
+
+ *Jeremy Cooper <jeremy@baymoo.org>*
+
+ * Make it possible to reuse SSLv2 sessions.
+
+ *Richard Levitte*
+
+ * In copy_email() check for >= 0 as a return value for
+ X509_NAME_get_index_by_NID() since 0 is a valid index.
+
+ *Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>*
+
+ * Avoid coredump with unsupported or invalid public keys by checking if
+ X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
+ PKCS7_verify() fails with non detached data.
+
+ *Steve Henson*
+
+ * Don't use getenv in library functions when run as setuid/setgid.
+ New function OPENSSL_issetugid().
+
+ *Ulf Moeller*
+
+ * Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
+ due to incorrect handling of multi-threading:
+
+ 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
+
+ 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
+
+ 3. Count how many times MemCheck_off() has been called so that
+ nested use can be treated correctly. This also avoids
+ inband-signalling in the previous code (which relied on the
+ assumption that thread ID 0 is impossible).
+
+ *Bodo Moeller*
+
+ * Add "-rand" option also to s_client and s_server.
+
+ *Lutz Jaenicke*
+
+ * Fix CPU detection on Irix 6.x.
+ *Kurt Hockenbury <khockenb@stevens-tech.edu> and
+ "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>*
+
+ * Fix X509_NAME bug which produced incorrect encoding if X509_NAME
+ was empty.
+
+ *Steve Henson*
+
+ *This change does not apply to 0.9.7.*
+
+ * Use the cached encoding of an X509_NAME structure rather than
+ copying it. This is apparently the reason for the libsafe "errors"
+ but the code is actually correct.
+
+ *Steve Henson*
+
+ * Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
+ Bleichenbacher's DSA attack.
+ Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
+ to be set and top=0 forces the highest bit to be set; top=-1 is new
+ and leaves the highest bit random.
+
+ *Ulf Moeller, Bodo Moeller*
+
+ * In the NCONF_...-based implementations for CONF_... queries
+ (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
+ a temporary CONF structure with the data component set to NULL
+ (which gives segmentation faults in lh_retrieve).
+ Instead, use NULL for the CONF pointer in CONF_get_string and
+ CONF_get_number (which may use environment variables) and directly
+ return NULL from CONF_get_section.
+
+ *Bodo Moeller*
+
+ * Fix potential buffer overrun for EBCDIC.
+
+ *Ulf Moeller*
+
+ * Tolerate nonRepudiation as being valid for S/MIME signing and certSign
+ keyUsage if basicConstraints absent for a CA.
+
+ *Steve Henson*
+
+ * Make SMIME_write_PKCS7() write mail header values with a format that
+ is more generally accepted (no spaces before the semicolon), since
+ some programs can't parse those values properly otherwise. Also make
+ sure BIO's that break lines after each write do not create invalid
+ headers.
+
+ *Richard Levitte*
+
+ * Make the CRL encoding routines work with empty SEQUENCE OF. The
+ macros previously used would not encode an empty SEQUENCE OF
+ and break the signature.
+
+ *Steve Henson*
+
+ *This change does not apply to 0.9.7.*
+
+ * Zero the premaster secret after deriving the master secret in
+ DH ciphersuites.
+
+ *Steve Henson*
+
+ * Add some EVP_add_digest_alias registrations (as found in
+ OpenSSL_add_all_digests()) to SSL_library_init()
+ aka OpenSSL_add_ssl_algorithms(). This provides improved
+ compatibility with peers using X.509 certificates
+ with unconventional AlgorithmIdentifier OIDs.
+
+ *Bodo Moeller*
+
+ * Fix for Irix with NO_ASM.
+
+ *"Bruce W. Forsberg" <bruce.forsberg@baesystems.com>*
+
+ * ./config script fixes.
+
+ *Ulf Moeller, Richard Levitte*
+
+ * Fix 'openssl passwd -1'.
+
+ *Bodo Moeller*
+
+ * Change PKCS12_key_gen_asc() so it can cope with non null
+ terminated strings whose length is passed in the passlen
+ parameter, for example from PEM callbacks. This was done
+ by adding an extra length parameter to asc2uni().
+
+ *Steve Henson, reported by <oddissey@samsung.co.kr>*
+
+ * Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
+ call failed, free the DSA structure.
+
+ *Bodo Moeller*
+
+ * Fix to uni2asc() to cope with zero length Unicode strings.
+ These are present in some PKCS#12 files.
+
+ *Steve Henson*
+
+ * Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
+ Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
+ when writing a 32767 byte record.
+
+ *Bodo Moeller; problem reported by Eric Day <eday@concentric.net>*
+
+ * In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
+ obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
+
+ (RSA objects have a reference count access to which is protected
+ by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
+ so they are meant to be shared between threads.)
+ *Bodo Moeller, Geoff Thorpe; original patch submitted by
+ "Reddie, Steven" <Steven.Reddie@ca.com>*
+
+ * Fix a deadlock in CRYPTO_mem_leaks().
+
+ *Bodo Moeller*
+
+ * Use better test patterns in bntest.
+
+ *Ulf Möller*
+
+ * rand_win.c fix for Borland C.
+
+ *Ulf Möller*
+
+ * BN_rshift bugfix for n == 0.
+
+ *Bodo Moeller*
+
+ * Add a 'bctest' script that checks for some known 'bc' bugs
+ so that 'make test' does not abort just because 'bc' is broken.
+
+ *Bodo Moeller*
+
+ * Store verify_result within SSL_SESSION also for client side to
+ avoid potential security hole. (Re-used sessions on the client side
+ always resulted in verify_result==X509_V_OK, not using the original
+ result of the server certificate verification.)
+
+ *Lutz Jaenicke*
+
+ * Fix ssl3_pending: If the record in s->s3->rrec is not of type
+ SSL3_RT_APPLICATION_DATA, return 0.
+ Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
+
+ *Bodo Moeller*
+
+ * Fix SSL_peek:
+ Both ssl2_peek and ssl3_peek, which were totally broken in earlier
+ releases, have been re-implemented by renaming the previous
+ implementations of ssl2_read and ssl3_read to ssl2_read_internal
+ and ssl3_read_internal, respectively, and adding 'peek' parameters
+ to them. The new ssl[23]_{read,peek} functions are calls to
+ ssl[23]_read_internal with the 'peek' flag set appropriately.
+ A 'peek' parameter has also been added to ssl3_read_bytes, which
+ does the actual work for ssl3_read_internal.
+
+ *Bodo Moeller*
+
+ * Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
+ the method-specific "init()" handler. Also clean up ex_data after
+ calling the method-specific "finish()" handler. Previously, this was
+ happening the other way round.
+
+ *Geoff Thorpe*
+
+ * Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
+ The previous value, 12, was not always sufficient for BN_mod_exp().
+
+ *Bodo Moeller*
+
+ * Make sure that shared libraries get the internal name engine with
+ the full version number and not just 0. This should mark the
+ shared libraries as not backward compatible. Of course, this should
+ be changed again when we can guarantee backward binary compatibility.
+
+ *Richard Levitte*
+
+ * Fix typo in get_cert_by_subject() in by_dir.c
+
+ *Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>*
+
+ * Rework the system to generate shared libraries:
+
+ - Make note of the expected extension for the shared libraries and
+ if there is a need for symbolic links from for example libcrypto.so.0
+ to libcrypto.so.0.9.7. There is extended info in Configure for
+ that.
+
+ - Make as few rebuilds of the shared libraries as possible.
+
+ - Still avoid linking the OpenSSL programs with the shared libraries.
+
+ - When installing, install the shared libraries separately from the
+ static ones.
+
+ *Richard Levitte*
+
+ * Fix SSL_CTX_set_read_ahead macro to actually use its argument.
+
+ Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
+ and not in SSL_clear because the latter is also used by the
+ accept/connect functions; previously, the settings made by
+ SSL_set_read_ahead would be lost during the handshake.
+
+ *Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>*
+
+ * Correct util/mkdef.pl to be selective about disabled algorithms.
+ Previously, it would create entries for disabled algorithms no
+ matter what.
+
+ *Richard Levitte*
+
+ * Added several new manual pages for SSL_* function.
+
+ *Lutz Jaenicke*
+
+### Changes between 0.9.5a and 0.9.6 [24 Sep 2000] ###
+
+ * In ssl23_get_client_hello, generate an error message when faced
+ with an initial SSL 3.0/TLS record that is too small to contain the
+ first two bytes of the ClientHello message, i.e. client_version.
+ (Note that this is a pathologic case that probably has never happened
+ in real life.) The previous approach was to use the version number
+ from the record header as a substitute; but our protocol choice
+ should not depend on that one because it is not authenticated
+ by the Finished messages.
+
+ *Bodo Moeller*
+
+ * More robust randomness gathering functions for Windows.
+
+ *Jeffrey Altman <jaltman@columbia.edu>*
+
+ * For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
+ not set then we don't setup the error code for issuer check errors
+ to avoid possibly overwriting other errors which the callback does
+ handle. If an application does set the flag then we assume it knows
+ what it is doing and can handle the new informational codes
+ appropriately.
+
+ *Steve Henson*
+
+ * Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
+ a general "ANY" type, as such it should be able to decode anything
+ including tagged types. However it didn't check the class so it would
+ wrongly interpret tagged types in the same way as their universal
+ counterpart and unknown types were just rejected. Changed so that the
+ tagged and unknown types are handled in the same way as a SEQUENCE:
+ that is the encoding is stored intact. There is also a new type
+ "V_ASN1_OTHER" which is used when the class is not universal, in this
+ case we have no idea what the actual type is so we just lump them all
+ together.
+
+ *Steve Henson*
+
+ * On VMS, stdout may very well lead to a file that is written to
+ in a record-oriented fashion. That means that every write() will
+ write a separate record, which will be read separately by the
+ programs trying to read from it. This can be very confusing.
+
+ The solution is to put a BIO filter in the way that will buffer
+ text until a linefeed is reached, and then write everything a
+ line at a time, so every record written will be an actual line,
+ not chunks of lines and not (usually doesn't happen, but I've
+ seen it once) several lines in one record. BIO_f_linebuffer() is
+ the answer.
+
+ Currently, it's a VMS-only method, because that's where it has
+ been tested well enough.
+
+ *Richard Levitte*
+
+ * Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
+ it can return incorrect results.
+ (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
+ but it was in 0.9.6-beta[12].)
+
+ *Bodo Moeller*
+
+ * Disable the check for content being present when verifying detached
+ signatures in pk7_smime.c. Some versions of Netscape (wrongly)
+ include zero length content when signing messages.
+
+ *Steve Henson*
+
+ * New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
+ BIO_ctrl (for BIO pairs).
+
+ *Bodo Möller*
+
+ * Add DSO method for VMS.
+
+ *Richard Levitte*
+
+ * Bug fix: Montgomery multiplication could produce results with the
+ wrong sign.
+
+ *Ulf Möller*
+
+ * Add RPM specification openssl.spec and modify it to build three
+ packages. The default package contains applications, application
+ documentation and run-time libraries. The devel package contains
+ include files, static libraries and function documentation. The
+ doc package contains the contents of the doc directory. The original
+ openssl.spec was provided by Damien Miller <djm@mindrot.org>.
+
+ *Richard Levitte*
+
+ * Add a large number of documentation files for many SSL routines.
+
+ *Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>*
+
+ * Add a configuration entry for Sony News 4.
+
+ *NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>*
+
+ * Don't set the two most significant bits to one when generating a
+ random number < q in the DSA library.
+
+ *Ulf Möller*
+
+ * New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
+ behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
+ the underlying transport is blocking) if a handshake took place.
+ (The default behaviour is needed by applications such as s_client
+ and s_server that use select() to determine when to use SSL_read;
+ but for applications that know in advance when to expect data, it
+ just makes things more complicated.)
+
+ *Bodo Moeller*
+
+ * Add RAND_egd_bytes(), which gives control over the number of bytes read
+ from EGD.
+
+ *Ben Laurie*
+
+ * Add a few more EBCDIC conditionals that make `req' and `x509'
+ work better on such systems.
+
+ *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>*
+
+ * Add two demo programs for PKCS12_parse() and PKCS12_create().
+ Update PKCS12_parse() so it copies the friendlyName and the
+ keyid to the certificates aux info.
+
+ *Steve Henson*
+
+ * Fix bug in PKCS7_verify() which caused an infinite loop
+ if there was more than one signature.
+
+ *Sven Uszpelkat <su@celocom.de>*
+
+ * Major change in util/mkdef.pl to include extra information
+ about each symbol, as well as presenting variables as well
+ as functions. This change means that there's n more need
+ to rebuild the .num files when some algorithms are excluded.
+
+ *Richard Levitte*
+
+ * Allow the verify time to be set by an application,
+ rather than always using the current time.
+
+ *Steve Henson*
+
+ * Phase 2 verify code reorganisation. The certificate
+ verify code now looks up an issuer certificate by a
+ number of criteria: subject name, authority key id
+ and key usage. It also verifies self signed certificates
+ by the same criteria. The main comparison function is
+ X509_check_issued() which performs these checks.
+
+ Lot of changes were necessary in order to support this
+ without completely rewriting the lookup code.
+
+ Authority and subject key identifier are now cached.
+
+ The LHASH 'certs' is X509_STORE has now been replaced
+ by a STACK_OF(X509_OBJECT). This is mainly because an
+ LHASH can't store or retrieve multiple objects with
+ the same hash value.
+
+ As a result various functions (which were all internal
+ use only) have changed to handle the new X509_STORE
+ structure. This will break anything that messed round
+ with X509_STORE internally.
+
+ The functions X509_STORE_add_cert() now checks for an
+ exact match, rather than just subject name.
+
+ The X509_STORE API doesn't directly support the retrieval
+ of multiple certificates matching a given criteria, however
+ this can be worked round by performing a lookup first
+ (which will fill the cache with candidate certificates)
+ and then examining the cache for matches. This is probably
+ the best we can do without throwing out X509_LOOKUP
+ entirely (maybe later...).
+
+ The X509_VERIFY_CTX structure has been enhanced considerably.
+
+ All certificate lookup operations now go via a get_issuer()
+ callback. Although this currently uses an X509_STORE it
+ can be replaced by custom lookups. This is a simple way
+ to bypass the X509_STORE hackery necessary to make this
+ work and makes it possible to use more efficient techniques
+ in future. A very simple version which uses a simple
+ STACK for its trusted certificate store is also provided
+ using X509_STORE_CTX_trusted_stack().
+
+ The verify_cb() and verify() callbacks now have equivalents
+ in the X509_STORE_CTX structure.
+
+ X509_STORE_CTX also has a 'flags' field which can be used
+ to customise the verify behaviour.
+
+ *Steve Henson*
+
+ * Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
+ excludes S/MIME capabilities.
+
+ *Steve Henson*
+
+ * When a certificate request is read in keep a copy of the
+ original encoding of the signed data and use it when outputting
+ again. Signatures then use the original encoding rather than
+ a decoded, encoded version which may cause problems if the
+ request is improperly encoded.
+
+ *Steve Henson*
+
+ * For consistency with other BIO_puts implementations, call
+ buffer_write(b, ...) directly in buffer_puts instead of calling
+ BIO_write(b, ...).
+
+ In BIO_puts, increment b->num_write as in BIO_write.
+
+ *Peter.Sylvester@EdelWeb.fr*
+
+ * Fix BN_mul_word for the case where the word is 0. (We have to use
+ BN_zero, we may not return a BIGNUM with an array consisting of
+ words set to zero.)
+
+ *Bodo Moeller*
+
+ * Avoid calling abort() from within the library when problems are
+ detected, except if preprocessor symbols have been defined
+ (such as REF_CHECK, BN_DEBUG etc.).
+
+ *Bodo Moeller*
+
+ * New openssl application 'rsautl'. This utility can be
+ used for low level RSA operations. DER public key
+ BIO/fp routines also added.
+
+ *Steve Henson*
+
+ * New Configure entry and patches for compiling on QNX 4.
+
+ *Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>*
+
+ * A demo state-machine implementation was sponsored by
+ Nuron (http://www.nuron.com/) and is now available in
+ demos/state_machine.
+
+ *Ben Laurie*
+
+ * New options added to the 'dgst' utility for signature
+ generation and verification.
+
+ *Steve Henson*
+
+ * Unrecognized PKCS#7 content types are now handled via a
+ catch all ASN1_TYPE structure. This allows unsupported
+ types to be stored as a "blob" and an application can
+ encode and decode it manually.
+
+ *Steve Henson*
+
+ * Fix various signed/unsigned issues to make a_strex.c
+ compile under VC++.
+
+ *Oscar Jacobsson <oscar.jacobsson@celocom.com>*
+
+ * ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
+ length if passed a buffer. ASN1_INTEGER_to_BN failed
+ if passed a NULL BN and its argument was negative.
+
+ *Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>*
+
+ * Modification to PKCS#7 encoding routines to output definite
+ length encoding. Since currently the whole structures are in
+ memory there's not real point in using indefinite length
+ constructed encoding. However if OpenSSL is compiled with
+ the flag PKCS7_INDEFINITE_ENCODING the old form is used.
+
+ *Steve Henson*
+
+ * Added BIO_vprintf() and BIO_vsnprintf().
+
+ *Richard Levitte*
+
+ * Added more prefixes to parse for in the strings written
+ through a logging bio, to cover all the levels that are available
+ through syslog. The prefixes are now:
+
+ PANIC, EMERG, EMR => LOG_EMERG
+ ALERT, ALR => LOG_ALERT
+ CRIT, CRI => LOG_CRIT
+ ERROR, ERR => LOG_ERR
+ WARNING, WARN, WAR => LOG_WARNING
+ NOTICE, NOTE, NOT => LOG_NOTICE
+ INFO, INF => LOG_INFO
+ DEBUG, DBG => LOG_DEBUG
+
+ and as before, if none of those prefixes are present at the
+ beginning of the string, LOG_ERR is chosen.
+
+ On Win32, the LOG_* levels are mapped according to this:
+
+ LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
+ LOG_WARNING => EVENTLOG_WARNING_TYPE
+ LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
+
+
+ *Richard Levitte*
+
+ * Made it possible to reconfigure with just the configuration
+ argument "reconf" or "reconfigure". The command line arguments
+ are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
+ and are retrieved from there when reconfiguring.
+
+ *Richard Levitte*
+
+ * MD4 implemented.
+
+ *Assar Westerlund <assar@sics.se>, Richard Levitte*
+
+ * Add the arguments -CAfile and -CApath to the pkcs12 utility.
+
+ *Richard Levitte*
+
+ * The obj_dat.pl script was messing up the sorting of object
+ names. The reason was that it compared the quoted version
+ of strings as a result "OCSP" > "OCSP Signing" because
+ " > SPACE. Changed script to store unquoted versions of
+ names and add quotes on output. It was also omitting some
+ names from the lookup table if they were given a default
+ value (that is if SN is missing it is given the same
+ value as LN and vice versa), these are now added on the
+ grounds that if an object has a name we should be able to
+ look it up. Finally added warning output when duplicate
+ short or long names are found.
+
+ *Steve Henson*
+
+ * Changes needed for Tandem NSK.
+
+ *Scott Uroff <scott@xypro.com>*
+
+ * Fix SSL 2.0 rollback checking: Due to an off-by-one error in
+ RSA_padding_check_SSLv23(), special padding was never detected
+ and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
+ version rollback attacks was not effective.
+
+ In s23_clnt.c, don't use special rollback-attack detection padding
+ (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
+ client; similarly, in s23_srvr.c, don't do the rollback check if
+ SSL 2.0 is the only protocol enabled in the server.
+
+ *Bodo Moeller*
+
+ * Make it possible to get hexdumps of unprintable data with 'openssl
+ asn1parse'. By implication, the functions ASN1_parse_dump() and
+ BIO_dump_indent() are added.
+
+ *Richard Levitte*
+
+ * New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
+ these print out strings and name structures based on various
+ flags including RFC2253 support and proper handling of
+ multibyte characters. Added options to the 'x509' utility
+ to allow the various flags to be set.
+
+ *Steve Henson*
+
+ * Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
+ Also change the functions X509_cmp_current_time() and
+ X509_gmtime_adj() work with an ASN1_TIME structure,
+ this will enable certificates using GeneralizedTime in validity
+ dates to be checked.
+
+ *Steve Henson*
+
+ * Make the NEG_PUBKEY_BUG code (which tolerates invalid
+ negative public key encodings) on by default,
+ NO_NEG_PUBKEY_BUG can be set to disable it.
+
+ *Steve Henson*
+
+ * New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
+ content octets. An i2c_ASN1_OBJECT is unnecessary because
+ the encoding can be trivially obtained from the structure.
+
+ *Steve Henson*
+
+ * crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
+ not read locks (CRYPTO_r_[un]lock).
+
+ *Bodo Moeller*
+
+ * A first attempt at creating official support for shared
+ libraries through configuration. I've kept it so the
+ default is static libraries only, and the OpenSSL programs
+ are always statically linked for now, but there are
+ preparations for dynamic linking in place.
+ This has been tested on Linux and Tru64.
+
+ *Richard Levitte*
+
+ * Randomness polling function for Win9x, as described in:
+ Peter Gutmann, Software Generation of Practically Strong
+ Random Numbers.
+
+ *Ulf Möller*
+
+ * Fix so PRNG is seeded in req if using an already existing
+ DSA key.
+
+ *Steve Henson*
+
+ * New options to smime application. -inform and -outform
+ allow alternative formats for the S/MIME message including
+ PEM and DER. The -content option allows the content to be
+ specified separately. This should allow things like Netscape
+ form signing output easier to verify.
+
+ *Steve Henson*
+
+ * Fix the ASN1 encoding of tags using the 'long form'.
+
+ *Steve Henson*
+
+ * New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
+ STRING types. These convert content octets to and from the
+ underlying type. The actual tag and length octets are
+ already assumed to have been read in and checked. These
+ are needed because all other string types have virtually
+ identical handling apart from the tag. By having versions
+ of the ASN1 functions that just operate on content octets
+ IMPLICIT tagging can be handled properly. It also allows
+ the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
+ and ASN1_INTEGER are identical apart from the tag.
+
+ *Steve Henson*
+
+ * Change the handling of OID objects as follows:
+
+ - New object identifiers are inserted in objects.txt, following
+ the syntax given in objects.README.
+ - objects.pl is used to process obj_mac.num and create a new
+ obj_mac.h.
+ - obj_dat.pl is used to create a new obj_dat.h, using the data in
+ obj_mac.h.
+
+ This is currently kind of a hack, and the perl code in objects.pl
+ isn't very elegant, but it works as I intended. The simplest way
+ to check that it worked correctly is to look in obj_dat.h and
+ check the array nid_objs and make sure the objects haven't moved
+ around (this is important!). Additions are OK, as well as
+ consistent name changes.
+
+ *Richard Levitte*
+
+ * Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
+
+ *Bodo Moeller*
+
+ * Addition of the command line parameter '-rand file' to 'openssl req'.
+ The given file adds to whatever has already been seeded into the
+ random pool through the RANDFILE configuration file option or
+ environment variable, or the default random state file.
+
+ *Richard Levitte*
+
+ * mkstack.pl now sorts each macro group into lexical order.
+ Previously the output order depended on the order the files
+ appeared in the directory, resulting in needless rewriting
+ of safestack.h .
+
+ *Steve Henson*
+
+ * Patches to make OpenSSL compile under Win32 again. Mostly
+ work arounds for the VC++ problem that it treats func() as
+ func(void). Also stripped out the parts of mkdef.pl that
+ added extra typesafe functions: these no longer exist.
+
+ *Steve Henson*
+
+ * Reorganisation of the stack code. The macros are now all
+ collected in safestack.h . Each macro is defined in terms of
+ a "stack macro" of the form SKM_<name>(type, a, b). The
+ DEBUG_SAFESTACK is now handled in terms of function casts,
+ this has the advantage of retaining type safety without the
+ use of additional functions. If DEBUG_SAFESTACK is not defined
+ then the non typesafe macros are used instead. Also modified the
+ mkstack.pl script to handle the new form. Needs testing to see
+ if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
+ the default if no major problems. Similar behaviour for ASN1_SET_OF
+ and PKCS12_STACK_OF.
+
+ *Steve Henson*
+
+ * When some versions of IIS use the 'NET' form of private key the
+ key derivation algorithm is different. Normally MD5(password) is
+ used as a 128 bit RC4 key. In the modified case
+ MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
+ new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
+ as the old Netscape_RSA functions except they have an additional
+ 'sgckey' parameter which uses the modified algorithm. Also added
+ an -sgckey command line option to the rsa utility. Thanks to
+ Adrian Peck <bertie@ncipher.com> for posting details of the modified
+ algorithm to openssl-dev.
+
+ *Steve Henson*
+
+ * The evp_local.h macros were using 'c.##kname' which resulted in
+ invalid expansion on some systems (SCO 5.0.5 for example).
+ Corrected to 'c.kname'.
+
+ *Phillip Porch <root@theporch.com>*
+
+ * New X509_get1_email() and X509_REQ_get1_email() functions that return
+ a STACK of email addresses from a certificate or request, these look
+ in the subject name and the subject alternative name extensions and
+ omit any duplicate addresses.
+
+ *Steve Henson*
+
+ * Re-implement BN_mod_exp2_mont using independent (and larger) windows.
+ This makes DSA verification about 2 % faster.
+
+ *Bodo Moeller*
+
+ * Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
+ (meaning that now 2^5 values will be precomputed, which is only 4 KB
+ plus overhead for 1024 bit moduli).
+ This makes exponentiations about 0.5 % faster for 1024 bit
+ exponents (as measured by "openssl speed rsa2048").
+
+ *Bodo Moeller*
+
+ * Rename memory handling macros to avoid conflicts with other
+ software:
+ Malloc => OPENSSL_malloc
+ Malloc_locked => OPENSSL_malloc_locked
+ Realloc => OPENSSL_realloc
+ Free => OPENSSL_free
+
+ *Richard Levitte*
+
+ * New function BN_mod_exp_mont_word for small bases (roughly 15%
+ faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
+
+ *Bodo Moeller*
+
+ * CygWin32 support.
+
+ *John Jarvie <jjarvie@newsguy.com>*
+
+ * The type-safe stack code has been rejigged. It is now only compiled
+ in when OpenSSL is configured with the DEBUG_SAFESTACK option and
+ by default all type-specific stack functions are "#define"d back to
+ standard stack functions. This results in more streamlined output
+ but retains the type-safety checking possibilities of the original
+ approach.
+
+ *Geoff Thorpe*
+
+ * The STACK code has been cleaned up, and certain type declarations
+ that didn't make a lot of sense have been brought in line. This has
+ also involved a cleanup of sorts in safestack.h to more correctly
+ map type-safe stack functions onto their plain stack counterparts.
+ This work has also resulted in a variety of "const"ifications of
+ lots of the code, especially "_cmp" operations which should normally
+ be prototyped with "const" parameters anyway.
+
+ *Geoff Thorpe*
+
+ * When generating bytes for the first time in md_rand.c, 'stir the pool'
+ by seeding with STATE_SIZE dummy bytes (with zero entropy count).
+ (The PRNG state consists of two parts, the large pool 'state' and 'md',
+ where all of 'md' is used each time the PRNG is used, but 'state'
+ is used only indexed by a cyclic counter. As entropy may not be
+ well distributed from the beginning, 'md' is important as a
+ chaining variable. However, the output function chains only half
+ of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
+ all of 'md', and seeding with STATE_SIZE dummy bytes will result
+ in all of 'state' being rewritten, with the new values depending
+ on virtually all of 'md'. This overcomes the 80 bit limitation.)
+
+ *Bodo Moeller*
+
+ * In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
+ the handshake is continued after ssl_verify_cert_chain();
+ otherwise, if SSL_VERIFY_NONE is set, remaining error codes
+ can lead to 'unexplainable' connection aborts later.
+
+ *Bodo Moeller; problem tracked down by Lutz Jaenicke*
+
+ * Major EVP API cipher revision.
+ Add hooks for extra EVP features. This allows various cipher
+ parameters to be set in the EVP interface. Support added for variable
+ key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
+ setting of RC2 and RC5 parameters.
+
+ Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
+ ciphers.
+
+ Remove lots of duplicated code from the EVP library. For example *every*
+ cipher init() function handles the 'iv' in the same way according to the
+ cipher mode. They also all do nothing if the 'key' parameter is NULL and
+ for CFB and OFB modes they zero ctx->num.
+
+ New functionality allows removal of S/MIME code RC2 hack.
+
+ Most of the routines have the same form and so can be declared in terms
+ of macros.
+
+ By shifting this to the top level EVP_CipherInit() it can be removed from
+ all individual ciphers. If the cipher wants to handle IVs or keys
+ differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
+ flags.
+
+ Change lots of functions like EVP_EncryptUpdate() to now return a
+ value: although software versions of the algorithms cannot fail
+ any installed hardware versions can.
+
+ *Steve Henson*
+
+ * Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
+ this option is set, tolerate broken clients that send the negotiated
+ protocol version number instead of the requested protocol version
+ number.
+
+ *Bodo Moeller*
+
+ * Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
+ i.e. non-zero for export ciphersuites, zero otherwise.
+ Previous versions had this flag inverted, inconsistent with
+ rsa_tmp_cb (..._TMP_RSA_CB).
+
+ *Bodo Moeller; problem reported by Amit Chopra*
+
+ * Add missing DSA library text string. Work around for some IIS
+ key files with invalid SEQUENCE encoding.
+
+ *Steve Henson*
+
+ * Add a document (doc/standards.txt) that list all kinds of standards
+ and so on that are implemented in OpenSSL.
+
+ *Richard Levitte*
+
+ * Enhance c_rehash script. Old version would mishandle certificates
+ with the same subject name hash and wouldn't handle CRLs at all.
+ Added -fingerprint option to crl utility, to support new c_rehash
+ features.
+
+ *Steve Henson*
+
+ * Eliminate non-ANSI declarations in crypto.h and stack.h.
+
+ *Ulf Möller*
+
+ * Fix for SSL server purpose checking. Server checking was
+ rejecting certificates which had extended key usage present
+ but no ssl client purpose.
+
+ *Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>*
+
+ * Make PKCS#12 code work with no password. The PKCS#12 spec
+ is a little unclear about how a blank password is handled.
+ Since the password in encoded as a BMPString with terminating
+ double NULL a zero length password would end up as just the
+ double NULL. However no password at all is different and is
+ handled differently in the PKCS#12 key generation code. NS
+ treats a blank password as zero length. MSIE treats it as no
+ password on export: but it will try both on import. We now do
+ the same: PKCS12_parse() tries zero length and no password if
+ the password is set to "" or NULL (NULL is now a valid password:
+ it wasn't before) as does the pkcs12 application.
+
+ *Steve Henson*
+
+ * Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
+ perror when PEM_read_bio_X509_REQ fails, the error message must
+ be obtained from the error queue.
+
+ *Bodo Moeller*
+
+ * Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
+ it in ERR_remove_state if appropriate, and change ERR_get_state
+ accordingly to avoid race conditions (this is necessary because
+ thread_hash is no longer constant once set).
+
+ *Bodo Moeller*
+
+ * Bugfix for linux-elf makefile.one.
+
+ *Ulf Möller*
+
+ * RSA_get_default_method() will now cause a default
+ RSA_METHOD to be chosen if one doesn't exist already.
+ Previously this was only set during a call to RSA_new()
+ or RSA_new_method(NULL) meaning it was possible for
+ RSA_get_default_method() to return NULL.
+
+ *Geoff Thorpe*
+
+ * Added native name translation to the existing DSO code
+ that will convert (if the flag to do so is set) filenames
+ that are sufficiently small and have no path information
+ into a canonical native form. Eg. "blah" converted to
+ "libblah.so" or "blah.dll" etc.
+
+ *Geoff Thorpe*
+
+ * New function ERR_error_string_n(e, buf, len) which is like
+ ERR_error_string(e, buf), but writes at most 'len' bytes
+ including the 0 terminator. For ERR_error_string_n, 'buf'
+ may not be NULL.
+
+ *Damien Miller <djm@mindrot.org>, Bodo Moeller*
+
+ * CONF library reworked to become more general. A new CONF
+ configuration file reader "class" is implemented as well as a
+ new functions (NCONF_*, for "New CONF") to handle it. The now
+ old CONF_* functions are still there, but are reimplemented to
+ work in terms of the new functions. Also, a set of functions
+ to handle the internal storage of the configuration data is
+ provided to make it easier to write new configuration file
+ reader "classes" (I can definitely see something reading a
+ configuration file in XML format, for example), called _CONF_*,
+ or "the configuration storage API"...
+
+ The new configuration file reading functions are:
+
+ NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
+ NCONF_get_section, NCONF_get_string, NCONF_get_numbre
+
+ NCONF_default, NCONF_WIN32
+
+ NCONF_dump_fp, NCONF_dump_bio
+
+ NCONF_default and NCONF_WIN32 are method (or "class") choosers,
+ NCONF_new creates a new CONF object. This works in the same way
+ as other interfaces in OpenSSL, like the BIO interface.
+ NCONF_dump_* dump the internal storage of the configuration file,
+ which is useful for debugging. All other functions take the same
+ arguments as the old CONF_* functions wth the exception of the
+ first that must be a `CONF *' instead of a `LHASH *'.
+
+ To make it easer to use the new classes with the old CONF_* functions,
+ the function CONF_set_default_method is provided.
+
+ *Richard Levitte*
+
+ * Add '-tls1' option to 'openssl ciphers', which was already
+ mentioned in the documentation but had not been implemented.
+ (This option is not yet really useful because even the additional
+ experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
+
+ *Bodo Moeller*
+
+ * Initial DSO code added into libcrypto for letting OpenSSL (and
+ OpenSSL-based applications) load shared libraries and bind to
+ them in a portable way.
+
+ *Geoff Thorpe, with contributions from Richard Levitte*
+
+### Changes between 0.9.5 and 0.9.5a [1 Apr 2000] ###
+
+ * Make sure _lrotl and _lrotr are only used with MSVC.
+
+ * Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
+ (the default implementation of RAND_status).
+
+ * Rename openssl x509 option '-crlext', which was added in 0.9.5,
+ to '-clrext' (= clear extensions), as intended and documented.
+ *Bodo Moeller; inconsistency pointed out by Michael Attili
+ <attili@amaxo.com>*
+
+ * Fix for HMAC. It wasn't zeroing the rest of the block if the key length
+ was larger than the MD block size.
+
+ *Steve Henson, pointed out by Yost William <YostW@tce.com>*
+
+ * Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
+ fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
+ using the passed key: if the passed key was a private key the result
+ of X509_print(), for example, would be to print out all the private key
+ components.
+
+ *Steve Henson*
+
+ * des_quad_cksum() byte order bug fix.
+ *Ulf Möller, using the problem description in krb4-0.9.7, where
+ the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>*
+
+ * Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
+ discouraged.
+
+ *Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>*
+
+ * For easily testing in shell scripts whether some command
+ 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
+ returns with exit code 0 iff no command of the given name is available.
+ 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
+ the output goes to stdout and nothing is printed to stderr.
+ Additional arguments are always ignored.
+
+ Since for each cipher there is a command of the same name,
+ the 'no-cipher' compilation switches can be tested this way.
+
+ ('openssl no-XXX' is not able to detect pseudo-commands such
+ as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
+
+ *Bodo Moeller*
+
+ * Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
+
+ *Bodo Moeller*
+
+ * For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
+ is set; it will be thrown away anyway because each handshake creates
+ its own key.
+ ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
+ to parameters -- in previous versions (since OpenSSL 0.9.3) the
+ 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
+ you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
+
+ *Bodo Moeller*
+
+ * New s_client option -ign_eof: EOF at stdin is ignored, and
+ 'Q' and 'R' lose their special meanings (quit/renegotiate).
+ This is part of what -quiet does; unlike -quiet, -ign_eof
+ does not suppress any output.
+
+ *Richard Levitte*
+
+ * Add compatibility options to the purpose and trust code. The
+ purpose X509_PURPOSE_ANY is "any purpose" which automatically
+ accepts a certificate or CA, this was the previous behaviour,
+ with all the associated security issues.
+
+ X509_TRUST_COMPAT is the old trust behaviour: only and
+ automatically trust self signed roots in certificate store. A
+ new trust setting X509_TRUST_DEFAULT is used to specify that
+ a purpose has no associated trust setting and it should instead
+ use the value in the default purpose.
+
+ *Steve Henson*
+
+ * Fix the PKCS#8 DSA private key code so it decodes keys again
+ and fix a memory leak.
+
+ *Steve Henson*
+
+ * In util/mkerr.pl (which implements 'make errors'), preserve
+ reason strings from the previous version of the .c file, as
+ the default to have only downcase letters (and digits) in
+ automatically generated reasons codes is not always appropriate.
+
+ *Bodo Moeller*
+
+ * In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
+ using strerror. Previously, ERR_reason_error_string() returned
+ library names as reason strings for SYSerr; but SYSerr is a special
+ case where small numbers are errno values, not library numbers.
+
+ *Bodo Moeller*
+
+ * Add '-dsaparam' option to 'openssl dhparam' application. This
+ converts DSA parameters into DH parameters. (When creating parameters,
+ DSA_generate_parameters is used.)
+
+ *Bodo Moeller*
+
+ * Include 'length' (recommended exponent length) in C code generated
+ by 'openssl dhparam -C'.
+
+ *Bodo Moeller*
+
+ * The second argument to set_label in perlasm was already being used
+ so couldn't be used as a "file scope" flag. Moved to third argument
+ which was free.
+
+ *Steve Henson*
+
+ * In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
+ instead of RAND_bytes for encryption IVs and salts.
+
+ *Bodo Moeller*
+
+ * Include RAND_status() into RAND_METHOD instead of implementing
+ it only for md_rand.c Otherwise replacing the PRNG by calling
+ RAND_set_rand_method would be impossible.
+
+ *Bodo Moeller*
+
+ * Don't let DSA_generate_key() enter an infinite loop if the random
+ number generation fails.
+
+ *Bodo Moeller*
+
+ * New 'rand' application for creating pseudo-random output.
+
+ *Bodo Moeller*
+
+ * Added configuration support for Linux/IA64
+
+ *Rolf Haberrecker <rolf@suse.de>*
+
+ * Assembler module support for Mingw32.
+
+ *Ulf Möller*
+
+ * Shared library support for HPUX (in shlib/).
+
+ *Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous*
+
+ * Shared library support for Solaris gcc.
+
+ *Lutz Behnke <behnke@trustcenter.de>*
+
+### Changes between 0.9.4 and 0.9.5 [28 Feb 2000] ###
+
+ * PKCS7_encrypt() was adding text MIME headers twice because they
+ were added manually and by SMIME_crlf_copy().
+
+ *Steve Henson*
+
+ * In bntest.c don't call BN_rand with zero bits argument.
+
+ *Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>*
+
+ * BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
+ case was implemented. This caused BN_div_recp() to fail occasionally.
+
+ *Ulf Möller*
+
+ * Add an optional second argument to the set_label() in the perl
+ assembly language builder. If this argument exists and is set
+ to 1 it signals that the assembler should use a symbol whose
+ scope is the entire file, not just the current function. This
+ is needed with MASM which uses the format label:: for this scope.
+
+ *Steve Henson, pointed out by Peter Runestig <peter@runestig.com>*
+
+ * Change the ASN1 types so they are typedefs by default. Before
+ almost all types were #define'd to ASN1_STRING which was causing
+ STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
+ for example.
+
+ *Steve Henson*
+
+ * Change names of new functions to the new get1/get0 naming
+ convention: After 'get1', the caller owns a reference count
+ and has to call ..._free; 'get0' returns a pointer to some
+ data structure without incrementing reference counters.
+ (Some of the existing 'get' functions increment a reference
+ counter, some don't.)
+ Similarly, 'set1' and 'add1' functions increase reference
+ counters or duplicate objects.
+
+ *Steve Henson*
+
+ * Allow for the possibility of temp RSA key generation failure:
+ the code used to assume it always worked and crashed on failure.
+
+ *Steve Henson*
+
+ * Fix potential buffer overrun problem in BIO_printf().
+ *Ulf Möller, using public domain code by Patrick Powell; problem
+ pointed out by David Sacerdote <das33@cornell.edu>*
+
+ * Support EGD <http://www.lothar.com/tech/crypto/>. New functions
+ RAND_egd() and RAND_status(). In the command line application,
+ the EGD socket can be specified like a seed file using RANDFILE
+ or -rand.
+
+ *Ulf Möller*
+
+ * Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
+ Some CAs (e.g. Verisign) distribute certificates in this form.
+
+ *Steve Henson*
+
+ * Remove the SSL_ALLOW_ADH compile option and set the default cipher
+ list to exclude them. This means that no special compilation option
+ is needed to use anonymous DH: it just needs to be included in the
+ cipher list.
+
+ *Steve Henson*
+
+ * Change the EVP_MD_CTX_type macro so its meaning consistent with
+ EVP_MD_type. The old functionality is available in a new macro called
+ EVP_MD_md(). Change code that uses it and update docs.
+
+ *Steve Henson*
+
+ * ..._ctrl functions now have corresponding ..._callback_ctrl functions
+ where the 'void *' argument is replaced by a function pointer argument.
+ Previously 'void *' was abused to point to functions, which works on
+ many platforms, but is not correct. As these functions are usually
+ called by macros defined in OpenSSL header files, most source code
+ should work without changes.
+
+ *Richard Levitte*
+
+ * <openssl/opensslconf.h> (which is created by Configure) now contains
+ sections with information on -D... compiler switches used for
+ compiling the library so that applications can see them. To enable
+ one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
+ must be defined. E.g.,
+ #define OPENSSL_ALGORITHM_DEFINES
+ #include <openssl/opensslconf.h>
+ defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
+
+ *Richard Levitte, Ulf and Bodo Möller*
+
+ * Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
+ record layer.
+
+ *Bodo Moeller*
+
+ * Change the 'other' type in certificate aux info to a STACK_OF
+ X509_ALGOR. Although not an AlgorithmIdentifier as such it has
+ the required ASN1 format: arbitrary types determined by an OID.
+
+ *Steve Henson*
+
+ * Add some PEM_write_X509_REQ_NEW() functions and a command line
+ argument to 'req'. This is not because the function is newer or
+ better than others it just uses the work 'NEW' in the certificate
+ request header lines. Some software needs this.
+
+ *Steve Henson*
+
+ * Reorganise password command line arguments: now passwords can be
+ obtained from various sources. Delete the PEM_cb function and make
+ it the default behaviour: i.e. if the callback is NULL and the
+ usrdata argument is not NULL interpret it as a null terminated pass
+ phrase. If usrdata and the callback are NULL then the pass phrase
+ is prompted for as usual.
+
+ *Steve Henson*
+
+ * Add support for the Compaq Atalla crypto accelerator. If it is installed,
+ the support is automatically enabled. The resulting binaries will
+ autodetect the card and use it if present.
+
+ *Ben Laurie and Compaq Inc.*
+
+ * Work around for Netscape hang bug. This sends certificate request
+ and server done in one record. Since this is perfectly legal in the
+ SSL/TLS protocol it isn't a "bug" option and is on by default. See
+ the bugs/SSLv3 entry for more info.
+
+ *Steve Henson*
+
+ * HP-UX tune-up: new unified configs, HP C compiler bug workaround.
+
+ *Andy Polyakov*
+
+ * Add -rand argument to smime and pkcs12 applications and read/write
+ of seed file.
+
+ *Steve Henson*
+
+ * New 'passwd' tool for crypt(3) and apr1 password hashes.
+
+ *Bodo Moeller*
+
+ * Add command line password options to the remaining applications.
+
+ *Steve Henson*
+
+ * Bug fix for BN_div_recp() for numerators with an even number of
+ bits.
+
+ *Ulf Möller*
+
+ * More tests in bntest.c, and changed test_bn output.
+
+ *Ulf Möller*
+
+ * ./config recognizes MacOS X now.
+
+ *Andy Polyakov*
+
+ * Bug fix for BN_div() when the first words of num and divisor are
+ equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
+
+ *Ulf Möller*
+
+ * Add support for various broken PKCS#8 formats, and command line
+ options to produce them.
+
+ *Steve Henson*
+
+ * New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
+ get temporary BIGNUMs from a BN_CTX.
+
+ *Ulf Möller*
+
+ * Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
+ for p == 0.
+
+ *Ulf Möller*
+
+ * Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
+ include a #define from the old name to the new. The original intent
+ was that statically linked binaries could for example just call
+ SSLeay_add_all_ciphers() to just add ciphers to the table and not
+ link with digests. This never worked because SSLeay_add_all_digests()
+ and SSLeay_add_all_ciphers() were in the same source file so calling
+ one would link with the other. They are now in separate source files.
+
+ *Steve Henson*
+
+ * Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
+
+ *Steve Henson*
+
+ * Use a less unusual form of the Miller-Rabin primality test (it used
+ a binary algorithm for exponentiation integrated into the Miller-Rabin
+ loop, our standard modexp algorithms are faster).
+
+ *Bodo Moeller*
+
+ * Support for the EBCDIC character set completed.
+
+ *Martin Kraemer <Martin.Kraemer@Mch.SNI.De>*
+
+ * Source code cleanups: use const where appropriate, eliminate casts,
+ use void * instead of char * in lhash.
+
+ *Ulf Möller*
+
+ * Bugfix: ssl3_send_server_key_exchange was not restartable
+ (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
+ this the server could overwrite ephemeral keys that the client
+ has already seen).
+
+ *Bodo Moeller*
+
+ * Turn DSA_is_prime into a macro that calls BN_is_prime,
+ using 50 iterations of the Rabin-Miller test.
+
+ DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
+ iterations of the Rabin-Miller test as required by the appendix
+ to FIPS PUB 186[-1]) instead of DSA_is_prime.
+ As BN_is_prime_fasttest includes trial division, DSA parameter
+ generation becomes much faster.
+
+ This implies a change for the callback functions in DSA_is_prime
+ and DSA_generate_parameters: The callback function is called once
+ for each positive witness in the Rabin-Miller test, not just
+ occasionally in the inner loop; and the parameters to the
+ callback function now provide an iteration count for the outer
+ loop rather than for the current invocation of the inner loop.
+ DSA_generate_parameters additionally can call the callback
+ function with an 'iteration count' of -1, meaning that a
+ candidate has passed the trial division test (when q is generated
+ from an application-provided seed, trial division is skipped).
+
+ *Bodo Moeller*
+
+ * New function BN_is_prime_fasttest that optionally does trial
+ division before starting the Rabin-Miller test and has
+ an additional BN_CTX * argument (whereas BN_is_prime always
+ has to allocate at least one BN_CTX).
+ 'callback(1, -1, cb_arg)' is called when a number has passed the
+ trial division stage.
+
+ *Bodo Moeller*
+
+ * Fix for bug in CRL encoding. The validity dates weren't being handled
+ as ASN1_TIME.
+
+ *Steve Henson*
+
+ * New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
+
+ *Steve Henson*
+
+ * New function BN_pseudo_rand().
+
+ *Ulf Möller*
+
+ * Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
+ bignum version of BN_from_montgomery() with the working code from
+ SSLeay 0.9.0 (the word based version is faster anyway), and clean up
+ the comments.
+
+ *Ulf Möller*
+
+ * Avoid a race condition in s2_clnt.c (function get_server_hello) that
+ made it impossible to use the same SSL_SESSION data structure in
+ SSL2 clients in multiple threads.
+
+ *Bodo Moeller*
+
+ * The return value of RAND_load_file() no longer counts bytes obtained
+ by stat(). RAND_load_file(..., -1) is new and uses the complete file
+ to seed the PRNG (previously an explicit byte count was required).
+
+ *Ulf Möller, Bodo Möller*
+
+ * Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
+ used (char *) instead of (void *) and had casts all over the place.
+
+ *Steve Henson*
+
+ * Make BN_generate_prime() return NULL on error if ret!=NULL.
+
+ *Ulf Möller*
+
+ * Retain source code compatibility for BN_prime_checks macro:
+ BN_is_prime(..., BN_prime_checks, ...) now uses
+ BN_prime_checks_for_size to determine the appropriate number of
+ Rabin-Miller iterations.
+
+ *Ulf Möller*
+
+ * Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
+ DH_CHECK_P_NOT_SAFE_PRIME.
+ (Check if this is true? OpenPGP calls them "strong".)
+
+ *Ulf Möller*
+
+ * Merge the functionality of "dh" and "gendh" programs into a new program
+ "dhparam". The old programs are retained for now but will handle DH keys
+ (instead of parameters) in future.
+
+ *Steve Henson*
+
+ * Make the ciphers, s_server and s_client programs check the return values
+ when a new cipher list is set.
+
+ *Steve Henson*
+
+ * Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
+ ciphers. Before when the 56bit ciphers were enabled the sorting was
+ wrong.
+
+ The syntax for the cipher sorting has been extended to support sorting by
+ cipher-strength (using the strength_bits hard coded in the tables).
+ The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
+
+ Fix a bug in the cipher-command parser: when supplying a cipher command
+ string with an "undefined" symbol (neither command nor alphanumeric
+ *A-Za-z0-9*, ssl_set_cipher_list used to hang in an endless loop. Now
+ an error is flagged.
+
+ Due to the strength-sorting extension, the code of the
+ ssl_create_cipher_list() function was completely rearranged. I hope that
+ the readability was also increased :-)
+
+ *Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>*
+
+ * Minor change to 'x509' utility. The -CAcreateserial option now uses 1
+ for the first serial number and places 2 in the serial number file. This
+ avoids problems when the root CA is created with serial number zero and
+ the first user certificate has the same issuer name and serial number
+ as the root CA.
+
+ *Steve Henson*
+
+ * Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
+ the new code. Add documentation for this stuff.
+
+ *Steve Henson*
+
+ * Changes to X509_ATTRIBUTE utilities. These have been renamed from
+ X509_*() to X509at_*() on the grounds that they don't handle X509
+ structures and behave in an analogous way to the X509v3 functions:
+ they shouldn't be called directly but wrapper functions should be used
+ instead.
+
+ So we also now have some wrapper functions that call the X509at functions
+ when passed certificate requests. (TO DO: similar things can be done with
+ PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
+ things. Some of these need some d2i or i2d and print functionality
+ because they handle more complex structures.)
+
+ *Steve Henson*
+
+ * Add missing #ifndefs that caused missing symbols when building libssl
+ as a shared library without RSA. Use #ifndef NO_SSL2 instead of
+ NO_RSA in ssl/s2*.c.
+
+ *Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller*
+
+ * Precautions against using the PRNG uninitialized: RAND_bytes() now
+ has a return value which indicates the quality of the random data
+ (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
+ error queue. New function RAND_pseudo_bytes() generates output that is
+ guaranteed to be unique but not unpredictable. RAND_add is like
+ RAND_seed, but takes an extra argument for an entropy estimate
+ (RAND_seed always assumes full entropy).
+
+ *Ulf Möller*
+
+ * Do more iterations of Rabin-Miller probable prime test (specifically,
+ 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
+ instead of only 2 for all lengths; see BN_prime_checks_for_size definition
+ in crypto/bn/bn_prime.c for the complete table). This guarantees a
+ false-positive rate of at most 2^-80 for random input.
+
+ *Bodo Moeller*
+
+ * Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
+
+ *Bodo Moeller*
+
+ * New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
+ in the 0.9.5 release), this returns the chain
+ from an X509_CTX structure with a dup of the stack and all
+ the X509 reference counts upped: so the stack will exist
+ after X509_CTX_cleanup() has been called. Modify pkcs12.c
+ to use this.
+
+ Also make SSL_SESSION_print() print out the verify return
+ code.
+
+ *Steve Henson*
+
+ * Add manpage for the pkcs12 command. Also change the default
+ behaviour so MAC iteration counts are used unless the new
+ -nomaciter option is used. This improves file security and
+ only older versions of MSIE (4.0 for example) need it.
+
+ *Steve Henson*
+
+ * Honor the no-xxx Configure options when creating .DEF files.
+
+ *Ulf Möller*
+
+ * Add PKCS#10 attributes to field table: challengePassword,
+ unstructuredName and unstructuredAddress. These are taken from
+ draft PKCS#9 v2.0 but are compatible with v1.2 provided no
+ international characters are used.
+
+ More changes to X509_ATTRIBUTE code: allow the setting of types
+ based on strings. Remove the 'loc' parameter when adding
+ attributes because these will be a SET OF encoding which is sorted
+ in ASN1 order.
+
+ *Steve Henson*
+
+ * Initial changes to the 'req' utility to allow request generation
+ automation. This will allow an application to just generate a template
+ file containing all the field values and have req construct the
+ request.
+
+ Initial support for X509_ATTRIBUTE handling. Stacks of these are
+ used all over the place including certificate requests and PKCS#7
+ structures. They are currently handled manually where necessary with
+ some primitive wrappers for PKCS#7. The new functions behave in a
+ manner analogous to the X509 extension functions: they allow
+ attributes to be looked up by NID and added.
+
+ Later something similar to the X509V3 code would be desirable to
+ automatically handle the encoding, decoding and printing of the
+ more complex types. The string types like challengePassword can
+ be handled by the string table functions.
+
+ Also modified the multi byte string table handling. Now there is
+ a 'global mask' which masks out certain types. The table itself
+ can use the flag STABLE_NO_MASK to ignore the mask setting: this
+ is useful when for example there is only one permissible type
+ (as in countryName) and using the mask might result in no valid
+ types at all.
+
+ *Steve Henson*
+
+ * Clean up 'Finished' handling, and add functions SSL_get_finished and
+ SSL_get_peer_finished to allow applications to obtain the latest
+ Finished messages sent to the peer or expected from the peer,
+ respectively. (SSL_get_peer_finished is usually the Finished message
+ actually received from the peer, otherwise the protocol will be aborted.)
+
+ As the Finished message are message digests of the complete handshake
+ (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
+ be used for external authentication procedures when the authentication
+ provided by SSL/TLS is not desired or is not enough.
+
+ *Bodo Moeller*
+
+ * Enhanced support for Alpha Linux is added. Now ./config checks if
+ the host supports BWX extension and if Compaq C is present on the
+ $PATH. Just exploiting of the BWX extension results in 20-30%
+ performance kick for some algorithms, e.g. DES and RC4 to mention
+ a couple. Compaq C in turn generates ~20% faster code for MD5 and
+ SHA1.
+
+ *Andy Polyakov*
+
+ * Add support for MS "fast SGC". This is arguably a violation of the
+ SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
+ weak crypto and after checking the certificate is SGC a second one
+ with strong crypto. MS SGC stops the first handshake after receiving
+ the server certificate message and sends a second client hello. Since
+ a server will typically do all the time consuming operations before
+ expecting any further messages from the client (server key exchange
+ is the most expensive) there is little difference between the two.
+
+ To get OpenSSL to support MS SGC we have to permit a second client
+ hello message after we have sent server done. In addition we have to
+ reset the MAC if we do get this second client hello.
+
+ *Steve Henson*
+
+ * Add a function 'd2i_AutoPrivateKey()' this will automatically decide
+ if a DER encoded private key is RSA or DSA traditional format. Changed
+ d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
+ format DER encoded private key. Newer code should use PKCS#8 format which
+ has the key type encoded in the ASN1 structure. Added DER private key
+ support to pkcs8 application.
+
+ *Steve Henson*
+
+ * SSL 3/TLS 1 servers now don't request certificates when an anonymous
+ ciphersuites has been selected (as required by the SSL 3/TLS 1
+ specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
+ is set, we interpret this as a request to violate the specification
+ (the worst that can happen is a handshake failure, and 'correct'
+ behaviour would result in a handshake failure anyway).
+
+ *Bodo Moeller*
+
+ * In SSL_CTX_add_session, take into account that there might be multiple
+ SSL_SESSION structures with the same session ID (e.g. when two threads
+ concurrently obtain them from an external cache).
+ The internal cache can handle only one SSL_SESSION with a given ID,
+ so if there's a conflict, we now throw out the old one to achieve
+ consistency.
+
+ *Bodo Moeller*
+
+ * Add OIDs for idea and blowfish in CBC mode. This will allow both
+ to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
+ some routines that use cipher OIDs: some ciphers do not have OIDs
+ defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
+ example.
+
+ *Steve Henson*
+
+ * Simplify the trust setting structure and code. Now we just have
+ two sequences of OIDs for trusted and rejected settings. These will
+ typically have values the same as the extended key usage extension
+ and any application specific purposes.
+
+ The trust checking code now has a default behaviour: it will just
+ check for an object with the same NID as the passed id. Functions can
+ be provided to override either the default behaviour or the behaviour
+ for a given id. SSL client, server and email already have functions
+ in place for compatibility: they check the NID and also return "trusted"
+ if the certificate is self signed.
+
+ *Steve Henson*
+
+ * Add d2i,i2d bio/fp functions for PrivateKey: these convert the
+ traditional format into an EVP_PKEY structure.
+
+ *Steve Henson*
+
+ * Add a password callback function PEM_cb() which either prompts for
+ a password if usr_data is NULL or otherwise assumes it is a null
+ terminated password. Allow passwords to be passed on command line
+ environment or config files in a few more utilities.
+
+ *Steve Henson*
+
+ * Add a bunch of DER and PEM functions to handle PKCS#8 format private
+ keys. Add some short names for PKCS#8 PBE algorithms and allow them
+ to be specified on the command line for the pkcs8 and pkcs12 utilities.
+ Update documentation.
+
+ *Steve Henson*
+
+ * Support for ASN1 "NULL" type. This could be handled before by using
+ ASN1_TYPE but there wasn't any function that would try to read a NULL
+ and produce an error if it couldn't. For compatibility we also have
+ ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
+ don't allocate anything because they don't need to.
+
+ *Steve Henson*
+
+ * Initial support for MacOS is now provided. Examine INSTALL.MacOS
+ for details.
+
+ *Andy Polyakov, Roy Woods <roy@centicsystems.ca>*
+
+ * Rebuild of the memory allocation routines used by OpenSSL code and
+ possibly others as well. The purpose is to make an interface that
+ provide hooks so anyone can build a separate set of allocation and
+ deallocation routines to be used by OpenSSL, for example memory
+ pool implementations, or something else, which was previously hard
+ since Malloc(), Realloc() and Free() were defined as macros having
+ the values malloc, realloc and free, respectively (except for Win32
+ compilations). The same is provided for memory debugging code.
+ OpenSSL already comes with functionality to find memory leaks, but
+ this gives people a chance to debug other memory problems.
+
+ With these changes, a new set of functions and macros have appeared:
+
+ CRYPTO_set_mem_debug_functions() [F]
+ CRYPTO_get_mem_debug_functions() [F]
+ CRYPTO_dbg_set_options() [F]
+ CRYPTO_dbg_get_options() [F]
+ CRYPTO_malloc_debug_init() [M]
+
+ The memory debug functions are NULL by default, unless the library
+ is compiled with CRYPTO_MDEBUG or friends is defined. If someone
+ wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
+ gives the standard debugging functions that come with OpenSSL) or
+ CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
+ provided by the library user) must be used. When the standard
+ debugging functions are used, CRYPTO_dbg_set_options can be used to
+ request additional information:
+ CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
+ the CRYPTO_MDEBUG_xxx macro when compiling the library.
+
+ Also, things like CRYPTO_set_mem_functions will always give the
+ expected result (the new set of functions is used for allocation
+ and deallocation) at all times, regardless of platform and compiler
+ options.
+
+ To finish it up, some functions that were never use in any other
+ way than through macros have a new API and new semantic:
+
+ CRYPTO_dbg_malloc()
+ CRYPTO_dbg_realloc()
+ CRYPTO_dbg_free()
+
+ All macros of value have retained their old syntax.
+
+ *Richard Levitte and Bodo Moeller*
+
+ * Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
+ ordering of SMIMECapabilities wasn't in "strength order" and there
+ was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
+ algorithm.
+
+ *Steve Henson*
+
+ * Some ASN1 types with illegal zero length encoding (INTEGER,
+ ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
+
+ *Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson*
+
+ * Merge in my S/MIME library for OpenSSL. This provides a simple
+ S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
+ functionality to handle multipart/signed properly) and a utility
+ called 'smime' to call all this stuff. This is based on code I
+ originally wrote for Celo who have kindly allowed it to be
+ included in OpenSSL.
+
+ *Steve Henson*
+
+ * Add variants des_set_key_checked and des_set_key_unchecked of
+ des_set_key (aka des_key_sched). Global variable des_check_key
+ decides which of these is called by des_set_key; this way
+ des_check_key behaves as it always did, but applications and
+ the library itself, which was buggy for des_check_key == 1,
+ have a cleaner way to pick the version they need.
+
+ *Bodo Moeller*
+
+ * New function PKCS12_newpass() which changes the password of a
+ PKCS12 structure.
+
+ *Steve Henson*
+
+ * Modify X509_TRUST and X509_PURPOSE so it also uses a static and
+ dynamic mix. In both cases the ids can be used as an index into the
+ table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
+ functions so they accept a list of the field values and the
+ application doesn't need to directly manipulate the X509_TRUST
+ structure.
+
+ *Steve Henson*
+
+ * Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
+ need initialising.
+
+ *Steve Henson*
+
+ * Modify the way the V3 extension code looks up extensions. This now
+ works in a similar way to the object code: we have some "standard"
+ extensions in a static table which is searched with OBJ_bsearch()
+ and the application can add dynamic ones if needed. The file
+ crypto/x509v3/ext_dat.h now has the info: this file needs to be
+ updated whenever a new extension is added to the core code and kept
+ in ext_nid order. There is a simple program 'tabtest.c' which checks
+ this. New extensions are not added too often so this file can readily
+ be maintained manually.
+
+ There are two big advantages in doing things this way. The extensions
+ can be looked up immediately and no longer need to be "added" using
+ X509V3_add_standard_extensions(): this function now does nothing.
+ *Side note: I get *lots* of email saying the extension code doesn't
+ work because people forget to call this function*
+ Also no dynamic allocation is done unless new extensions are added:
+ so if we don't add custom extensions there is no need to call
+ X509V3_EXT_cleanup().
+
+ *Steve Henson*
+
+ * Modify enc utility's salting as follows: make salting the default. Add a
+ magic header, so unsalted files fail gracefully instead of just decrypting
+ to garbage. This is because not salting is a big security hole, so people
+ should be discouraged from doing it.
+
+ *Ben Laurie*
+
+ * Fixes and enhancements to the 'x509' utility. It allowed a message
+ digest to be passed on the command line but it only used this
+ parameter when signing a certificate. Modified so all relevant
+ operations are affected by the digest parameter including the
+ -fingerprint and -x509toreq options. Also -x509toreq choked if a
+ DSA key was used because it didn't fix the digest.
+
+ *Steve Henson*
+
+ * Initial certificate chain verify code. Currently tests the untrusted
+ certificates for consistency with the verify purpose (which is set
+ when the X509_STORE_CTX structure is set up) and checks the pathlength.
+
+ There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
+ this is because it will reject chains with invalid extensions whereas
+ every previous version of OpenSSL and SSLeay made no checks at all.
+
+ Trust code: checks the root CA for the relevant trust settings. Trust
+ settings have an initial value consistent with the verify purpose: e.g.
+ if the verify purpose is for SSL client use it expects the CA to be
+ trusted for SSL client use. However the default value can be changed to
+ permit custom trust settings: one example of this would be to only trust
+ certificates from a specific "secure" set of CAs.
+
+ Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
+ which should be used for version portability: especially since the
+ verify structure is likely to change more often now.
+
+ SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
+ to set them. If not set then assume SSL clients will verify SSL servers
+ and vice versa.
+
+ Two new options to the verify program: -untrusted allows a set of
+ untrusted certificates to be passed in and -purpose which sets the
+ intended purpose of the certificate. If a purpose is set then the
+ new chain verify code is used to check extension consistency.
+
+ *Steve Henson*
+
+ * Support for the authority information access extension.
+
+ *Steve Henson*
+
+ * Modify RSA and DSA PEM read routines to transparently handle
+ PKCS#8 format private keys. New *_PUBKEY_* functions that handle
+ public keys in a format compatible with certificate
+ SubjectPublicKeyInfo structures. Unfortunately there were already
+ functions called *_PublicKey_* which used various odd formats so
+ these are retained for compatibility: however the DSA variants were
+ never in a public release so they have been deleted. Changed dsa/rsa
+ utilities to handle the new format: note no releases ever handled public
+ keys so we should be OK.
+
+ The primary motivation for this change is to avoid the same fiasco
+ that dogs private keys: there are several incompatible private key
+ formats some of which are standard and some OpenSSL specific and
+ require various evil hacks to allow partial transparent handling and
+ even then it doesn't work with DER formats. Given the option anything
+ other than PKCS#8 should be dumped: but the other formats have to
+ stay in the name of compatibility.
+
+ With public keys and the benefit of hindsight one standard format
+ is used which works with EVP_PKEY, RSA or DSA structures: though
+ it clearly returns an error if you try to read the wrong kind of key.
+
+ Added a -pubkey option to the 'x509' utility to output the public key.
+ Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
+ (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
+ EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
+ that do the same as the EVP_PKEY_assign_*() except they up the
+ reference count of the added key (they don't "swallow" the
+ supplied key).
+
+ *Steve Henson*
+
+ * Fixes to crypto/x509/by_file.c the code to read in certificates and
+ CRLs would fail if the file contained no certificates or no CRLs:
+ added a new function to read in both types and return the number
+ read: this means that if none are read it will be an error. The
+ DER versions of the certificate and CRL reader would always fail
+ because it isn't possible to mix certificates and CRLs in DER format
+ without choking one or the other routine. Changed this to just read
+ a certificate: this is the best we can do. Also modified the code
+ in apps/verify.c to take notice of return codes: it was previously
+ attempting to read in certificates from NULL pointers and ignoring
+ any errors: this is one reason why the cert and CRL reader seemed
+ to work. It doesn't check return codes from the default certificate
+ routines: these may well fail if the certificates aren't installed.
+
+ *Steve Henson*
+
+ * Code to support otherName option in GeneralName.
+
+ *Steve Henson*
+
+ * First update to verify code. Change the verify utility
+ so it warns if it is passed a self signed certificate:
+ for consistency with the normal behaviour. X509_verify
+ has been modified to it will now verify a self signed
+ certificate if *exactly* the same certificate appears
+ in the store: it was previously impossible to trust a
+ single self signed certificate. This means that:
+ openssl verify ss.pem
+ now gives a warning about a self signed certificate but
+ openssl verify -CAfile ss.pem ss.pem
+ is OK.
+
+ *Steve Henson*
+
+ * For servers, store verify_result in SSL_SESSION data structure
+ (and add it to external session representation).
+ This is needed when client certificate verifications fails,
+ but an application-provided verification callback (set by
+ SSL_CTX_set_cert_verify_callback) allows accepting the session
+ anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
+ but returns 1): When the session is reused, we have to set
+ ssl->verify_result to the appropriate error code to avoid
+ security holes.
+
+ *Bodo Moeller, problem pointed out by Lutz Jaenicke*
+
+ * Fix a bug in the new PKCS#7 code: it didn't consider the
+ case in PKCS7_dataInit() where the signed PKCS7 structure
+ didn't contain any existing data because it was being created.
+
+ *Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson*
+
+ * Add a salt to the key derivation routines in enc.c. This
+ forms the first 8 bytes of the encrypted file. Also add a
+ -S option to allow a salt to be input on the command line.
+
+ *Steve Henson*
+
+ * New function X509_cmp(). Oddly enough there wasn't a function
+ to compare two certificates. We do this by working out the SHA1
+ hash and comparing that. X509_cmp() will be needed by the trust
+ code.
+
+ *Steve Henson*
+
+ * SSL_get1_session() is like SSL_get_session(), but increments
+ the reference count in the SSL_SESSION returned.
+
+ *Geoff Thorpe <geoff@eu.c2.net>*
+
+ * Fix for 'req': it was adding a null to request attributes.
+ Also change the X509_LOOKUP and X509_INFO code to handle
+ certificate auxiliary information.
+
+ *Steve Henson*
+
+ * Add support for 40 and 64 bit RC2 and RC4 algorithms: document
+ the 'enc' command.
+
+ *Steve Henson*
+
+ * Add the possibility to add extra information to the memory leak
+ detecting output, to form tracebacks, showing from where each
+ allocation was originated: CRYPTO_push_info("constant string") adds
+ the string plus current file name and line number to a per-thread
+ stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
+ is like calling CYRPTO_pop_info() until the stack is empty.
+ Also updated memory leak detection code to be multi-thread-safe.
+
+ *Richard Levitte*
+
+ * Add options -text and -noout to pkcs7 utility and delete the
+ encryption options which never did anything. Update docs.
+
+ *Steve Henson*
+
+ * Add options to some of the utilities to allow the pass phrase
+ to be included on either the command line (not recommended on
+ OSes like Unix) or read from the environment. Update the
+ manpages and fix a few bugs.
+
+ *Steve Henson*
+
+ * Add a few manpages for some of the openssl commands.
+
+ *Steve Henson*
+
+ * Fix the -revoke option in ca. It was freeing up memory twice,
+ leaking and not finding already revoked certificates.
+
+ *Steve Henson*
+
+ * Extensive changes to support certificate auxiliary information.
+ This involves the use of X509_CERT_AUX structure and X509_AUX
+ functions. An X509_AUX function such as PEM_read_X509_AUX()
+ can still read in a certificate file in the usual way but it
+ will also read in any additional "auxiliary information". By
+ doing things this way a fair degree of compatibility can be
+ retained: existing certificates can have this information added
+ using the new 'x509' options.
+
+ Current auxiliary information includes an "alias" and some trust
+ settings. The trust settings will ultimately be used in enhanced
+ certificate chain verification routines: currently a certificate
+ can only be trusted if it is self signed and then it is trusted
+ for all purposes.
+
+ *Steve Henson*
+
+ * Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
+ The problem was that one of the replacement routines had not been working
+ since SSLeay releases. For now the offending routine has been replaced
+ with non-optimised assembler. Even so, this now gives around 95%
+ performance improvement for 1024 bit RSA signs.
+
+ *Mark Cox*
+
+ * Hack to fix PKCS#7 decryption when used with some unorthodox RC2
+ handling. Most clients have the effective key size in bits equal to
+ the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
+ A few however don't do this and instead use the size of the decrypted key
+ to determine the RC2 key length and the AlgorithmIdentifier to determine
+ the effective key length. In this case the effective key length can still
+ be 40 bits but the key length can be 168 bits for example. This is fixed
+ by manually forcing an RC2 key into the EVP_PKEY structure because the
+ EVP code can't currently handle unusual RC2 key sizes: it always assumes
+ the key length and effective key length are equal.
+
+ *Steve Henson*
+
+ * Add a bunch of functions that should simplify the creation of
+ X509_NAME structures. Now you should be able to do:
+ X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
+ and have it automatically work out the correct field type and fill in
+ the structures. The more adventurous can try:
+ X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
+ and it will (hopefully) work out the correct multibyte encoding.
+
+ *Steve Henson*
+
+ * Change the 'req' utility to use the new field handling and multibyte
+ copy routines. Before the DN field creation was handled in an ad hoc
+ way in req, ca, and x509 which was rather broken and didn't support
+ BMPStrings or UTF8Strings. Since some software doesn't implement
+ BMPStrings or UTF8Strings yet, they can be enabled using the config file
+ using the dirstring_type option. See the new comment in the default
+ openssl.cnf for more info.
+
+ *Steve Henson*
+
+ * Make crypto/rand/md_rand.c more robust:
+ - Assure unique random numbers after fork().
+ - Make sure that concurrent threads access the global counter and
+ md serializably so that we never lose entropy in them
+ or use exactly the same state in multiple threads.
+ Access to the large state is not always serializable because
+ the additional locking could be a performance killer, and
+ md should be large enough anyway.
+
+ *Bodo Moeller*
+
+ * New file apps/app_rand.c with commonly needed functionality
+ for handling the random seed file.
+
+ Use the random seed file in some applications that previously did not:
+ ca,
+ dsaparam -genkey (which also ignored its '-rand' option),
+ s_client,
+ s_server,
+ x509 (when signing).
+ Except on systems with /dev/urandom, it is crucial to have a random
+ seed file at least for key creation, DSA signing, and for DH exchanges;
+ for RSA signatures we could do without one.
+
+ gendh and gendsa (unlike genrsa) used to read only the first byte
+ of each file listed in the '-rand' option. The function as previously
+ found in genrsa is now in app_rand.c and is used by all programs
+ that support '-rand'.
+
+ *Bodo Moeller*
+
+ * In RAND_write_file, use mode 0600 for creating files;
+ don't just chmod when it may be too late.
+
+ *Bodo Moeller*
+
+ * Report an error from X509_STORE_load_locations
+ when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
+
+ *Bill Perry*
+
+ * New function ASN1_mbstring_copy() this copies a string in either
+ ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
+ into an ASN1_STRING type. A mask of permissible types is passed
+ and it chooses the "minimal" type to use or an error if not type
+ is suitable.
+
+ *Steve Henson*
+
+ * Add function equivalents to the various macros in asn1.h. The old
+ macros are retained with an M_ prefix. Code inside the library can
+ use the M_ macros. External code (including the openssl utility)
+ should *NOT* in order to be "shared library friendly".
+
+ *Steve Henson*
+
+ * Add various functions that can check a certificate's extensions
+ to see if it usable for various purposes such as SSL client,
+ server or S/MIME and CAs of these types. This is currently
+ VERY EXPERIMENTAL but will ultimately be used for certificate chain
+ verification. Also added a -purpose flag to x509 utility to
+ print out all the purposes.
+
+ *Steve Henson*
+
+ * Add a CRYPTO_EX_DATA to X509 certificate structure and associated
+ functions.
+
+ *Steve Henson*
+
+ * New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
+ for, obtain and decode and extension and obtain its critical flag.
+ This allows all the necessary extension code to be handled in a
+ single function call.
+
+ *Steve Henson*
+
+ * RC4 tune-up featuring 30-40% performance improvement on most RISC
+ platforms. See crypto/rc4/rc4_enc.c for further details.
+
+ *Andy Polyakov*
+
+ * New -noout option to asn1parse. This causes no output to be produced
+ its main use is when combined with -strparse and -out to extract data
+ from a file (which may not be in ASN.1 format).
+
+ *Steve Henson*
+
+ * Fix for pkcs12 program. It was hashing an invalid certificate pointer
+ when producing the local key id.
+
+ *Richard Levitte <levitte@stacken.kth.se>*
+
+ * New option -dhparam in s_server. This allows a DH parameter file to be
+ stated explicitly. If it is not stated then it tries the first server
+ certificate file. The previous behaviour hard coded the filename
+ "server.pem".
+
+ *Steve Henson*
+
+ * Add -pubin and -pubout options to the rsa and dsa commands. These allow
+ a public key to be input or output. For example:
+ openssl rsa -in key.pem -pubout -out pubkey.pem
+ Also added necessary DSA public key functions to handle this.
+
+ *Steve Henson*
+
+ * Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
+ in the message. This was handled by allowing
+ X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
+
+ *Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>*
+
+ * Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
+ to the end of the strings whereas this didn't. This would cause problems
+ if strings read with d2i_ASN1_bytes() were later modified.
+
+ *Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>*
+
+ * Fix for base64 decode bug. When a base64 bio reads only one line of
+ data and it contains EOF it will end up returning an error. This is
+ caused by input 46 bytes long. The cause is due to the way base64
+ BIOs find the start of base64 encoded data. They do this by trying a
+ trial decode on each line until they find one that works. When they
+ do a flag is set and it starts again knowing it can pass all the
+ data directly through the decoder. Unfortunately it doesn't reset
+ the context it uses. This means that if EOF is reached an attempt
+ is made to pass two EOFs through the context and this causes the
+ resulting error. This can also cause other problems as well. As is
+ usual with these problems it takes *ages* to find and the fix is
+ trivial: move one line.
+
+ *Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) *
+
+ * Ugly workaround to get s_client and s_server working under Windows. The
+ old code wouldn't work because it needed to select() on sockets and the
+ tty (for keypresses and to see if data could be written). Win32 only
+ supports select() on sockets so we select() with a 1s timeout on the
+ sockets and then see if any characters are waiting to be read, if none
+ are present then we retry, we also assume we can always write data to
+ the tty. This isn't nice because the code then blocks until we've
+ received a complete line of data and it is effectively polling the
+ keyboard at 1s intervals: however it's quite a bit better than not
+ working at all :-) A dedicated Windows application might handle this
+ with an event loop for example.
+
+ *Steve Henson*
+
+ * Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
+ and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
+ will be called when RSA_sign() and RSA_verify() are used. This is useful
+ if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
+ For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
+ should *not* be used: RSA_sign() and RSA_verify() must be used instead.
+ This necessitated the support of an extra signature type NID_md5_sha1
+ for SSL signatures and modifications to the SSL library to use it instead
+ of calling RSA_public_decrypt() and RSA_private_encrypt().
+
+ *Steve Henson*
+
+ * Add new -verify -CAfile and -CApath options to the crl program, these
+ will lookup a CRL issuers certificate and verify the signature in a
+ similar way to the verify program. Tidy up the crl program so it
+ no longer accesses structures directly. Make the ASN1 CRL parsing a bit
+ less strict. It will now permit CRL extensions even if it is not
+ a V2 CRL: this will allow it to tolerate some broken CRLs.
+
+ *Steve Henson*
+
+ * Initialize all non-automatic variables each time one of the openssl
+ sub-programs is started (this is necessary as they may be started
+ multiple times from the "OpenSSL>" prompt).
+
+ *Lennart Bang, Bodo Moeller*
+
+ * Preliminary compilation option RSA_NULL which disables RSA crypto without
+ removing all other RSA functionality (this is what NO_RSA does). This
+ is so (for example) those in the US can disable those operations covered
+ by the RSA patent while allowing storage and parsing of RSA keys and RSA
+ key generation.
+
+ *Steve Henson*
+
+ * Non-copying interface to BIO pairs.
+ (still largely untested)
+
+ *Bodo Moeller*
+
+ * New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
+ ASCII string. This was handled independently in various places before.
+
+ *Steve Henson*
+
+ * New functions UTF8_getc() and UTF8_putc() that parse and generate
+ UTF8 strings a character at a time.
+
+ *Steve Henson*
+
+ * Use client_version from client hello to select the protocol
+ (s23_srvr.c) and for RSA client key exchange verification
+ (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
+
+ *Bodo Moeller*
+
+ * Add various utility functions to handle SPKACs, these were previously
+ handled by poking round in the structure internals. Added new function
+ NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
+ print, verify and generate SPKACs. Based on an original idea from
+ Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
+
+ *Steve Henson*
+
+ * RIPEMD160 is operational on all platforms and is back in 'make test'.
+
+ *Andy Polyakov*
+
+ * Allow the config file extension section to be overwritten on the
+ command line. Based on an original idea from Massimiliano Pala
+ <madwolf@comune.modena.it>. The new option is called -extensions
+ and can be applied to ca, req and x509. Also -reqexts to override
+ the request extensions in req and -crlexts to override the crl extensions
+ in ca.
+
+ *Steve Henson*
+
+ * Add new feature to the SPKAC handling in ca. Now you can include
+ the same field multiple times by preceding it by "XXXX." for example:
+ 1.OU="Unit name 1"
+ 2.OU="Unit name 2"
+ this is the same syntax as used in the req config file.
+
+ *Steve Henson*
+
+ * Allow certificate extensions to be added to certificate requests. These
+ are specified in a 'req_extensions' option of the req section of the
+ config file. They can be printed out with the -text option to req but
+ are otherwise ignored at present.
+
+ *Steve Henson*
+
+ * Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
+ data read consists of only the final block it would not decrypted because
+ EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
+ A misplaced 'break' also meant the decrypted final block might not be
+ copied until the next read.
+
+ *Steve Henson*
+
+ * Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
+ a few extra parameters to the DH structure: these will be useful if
+ for example we want the value of 'q' or implement X9.42 DH.
+
+ *Steve Henson*
+
+ * Initial support for DSA_METHOD. This is based on the RSA_METHOD and
+ provides hooks that allow the default DSA functions or functions on a
+ "per key" basis to be replaced. This allows hardware acceleration and
+ hardware key storage to be handled without major modification to the
+ library. Also added low level modexp hooks and CRYPTO_EX structure and
+ associated functions.
+
+ *Steve Henson*
+
+ * Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
+ as "read only": it can't be written to and the buffer it points to will
+ not be freed. Reading from a read only BIO is much more efficient than
+ a normal memory BIO. This was added because there are several times when
+ an area of memory needs to be read from a BIO. The previous method was
+ to create a memory BIO and write the data to it, this results in two
+ copies of the data and an O(n^2) reading algorithm. There is a new
+ function BIO_new_mem_buf() which creates a read only memory BIO from
+ an area of memory. Also modified the PKCS#7 routines to use read only
+ memory BIOs.
+
+ *Steve Henson*
+
+ * Bugfix: ssl23_get_client_hello did not work properly when called in
+ state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
+ a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
+ but a retry condition occurred while trying to read the rest.
+
+ *Bodo Moeller*
+
+ * The PKCS7_ENC_CONTENT_new() function was setting the content type as
+ NID_pkcs7_encrypted by default: this was wrong since this should almost
+ always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
+ the encrypted data type: this is a more sensible place to put it and it
+ allows the PKCS#12 code to be tidied up that duplicated this
+ functionality.
+
+ *Steve Henson*
+
+ * Changed obj_dat.pl script so it takes its input and output files on
+ the command line. This should avoid shell escape redirection problems
+ under Win32.
+
+ *Steve Henson*
+
+ * Initial support for certificate extension requests, these are included
+ in things like Xenroll certificate requests. Included functions to allow
+ extensions to be obtained and added.
+
+ *Steve Henson*
+
+ * -crlf option to s_client and s_server for sending newlines as
+ CRLF (as required by many protocols).
+
+ *Bodo Moeller*
+
+### Changes between 0.9.3a and 0.9.4 [09 Aug 1999] ###
+
+ * Install libRSAglue.a when OpenSSL is built with RSAref.
+
+ *Ralf S. Engelschall*
+
+ * A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
+
+ *Andrija Antonijevic <TheAntony2@bigfoot.com>*
+
+ * Fix -startdate and -enddate (which was missing) arguments to 'ca'
+ program.
+
+ *Steve Henson*
+
+ * New function DSA_dup_DH, which duplicates DSA parameters/keys as
+ DH parameters/keys (q is lost during that conversion, but the resulting
+ DH parameters contain its length).
+
+ For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
+ much faster than DH_generate_parameters (which creates parameters
+ where p = 2*q + 1), and also the smaller q makes DH computations
+ much more efficient (160-bit exponentiation instead of 1024-bit
+ exponentiation); so this provides a convenient way to support DHE
+ ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
+ utter importance to use
+ SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
+ or
+ SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
+ when such DH parameters are used, because otherwise small subgroup
+ attacks may become possible!
+
+ *Bodo Moeller*
+
+ * Avoid memory leak in i2d_DHparams.
+
+ *Bodo Moeller*
+
+ * Allow the -k option to be used more than once in the enc program:
+ this allows the same encrypted message to be read by multiple recipients.
+
+ *Steve Henson*
+
+ * New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
+ an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
+ it will always use the numerical form of the OID, even if it has a short
+ or long name.
+
+ *Steve Henson*
+
+ * Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
+ method only got called if p,q,dmp1,dmq1,iqmp components were present,
+ otherwise bn_mod_exp was called. In the case of hardware keys for example
+ no private key components need be present and it might store extra data
+ in the RSA structure, which cannot be accessed from bn_mod_exp.
+ By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
+ private key operations.
+
+ *Steve Henson*
+
+ * Added support for SPARC Linux.
+
+ *Andy Polyakov*
+
+ * pem_password_cb function type incompatibly changed from
+ typedef int pem_password_cb(char *buf, int size, int rwflag);
+ to
+ ....(char *buf, int size, int rwflag, void *userdata);
+ so that applications can pass data to their callbacks:
+ The PEM[_ASN1]_{read,write}... functions and macros now take an
+ additional void * argument, which is just handed through whenever
+ the password callback is called.
+
+ *Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller*
+
+ New function SSL_CTX_set_default_passwd_cb_userdata.
+
+ Compatibility note: As many C implementations push function arguments
+ onto the stack in reverse order, the new library version is likely to
+ interoperate with programs that have been compiled with the old
+ pem_password_cb definition (PEM_whatever takes some data that
+ happens to be on the stack as its last argument, and the callback
+ just ignores this garbage); but there is no guarantee whatsoever that
+ this will work.
+
+ * The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
+ (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
+ problems not only on Windows, but also on some Unix platforms.
+ To avoid problematic command lines, these definitions are now in an
+ auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
+ for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
+
+ *Bodo Moeller*
+
+ * MIPS III/IV assembler module is reimplemented.
+
+ *Andy Polyakov*
+
+ * More DES library cleanups: remove references to srand/rand and
+ delete an unused file.
+
+ *Ulf Möller*
+
+ * Add support for the free Netwide assembler (NASM) under Win32,
+ since not many people have MASM (ml) and it can be hard to obtain.
+ This is currently experimental but it seems to work OK and pass all
+ the tests. Check out INSTALL.W32 for info.
+
+ *Steve Henson*
+
+ * Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
+ without temporary keys kept an extra copy of the server key,
+ and connections with temporary keys did not free everything in case
+ of an error.
+
+ *Bodo Moeller*
+
+ * New function RSA_check_key and new openssl rsa option -check
+ for verifying the consistency of RSA keys.
+
+ *Ulf Moeller, Bodo Moeller*
+
+ * Various changes to make Win32 compile work:
+ 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
+ 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
+ comparison" warnings.
+ 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
+
+ *Steve Henson*
+
+ * Add a debugging option to PKCS#5 v2 key generation function: when
+ you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
+ derived keys are printed to stderr.
+
+ *Steve Henson*
+
+ * Copy the flags in ASN1_STRING_dup().
+
+ *Roman E. Pavlov <pre@mo.msk.ru>*
+
+ * The x509 application mishandled signing requests containing DSA
+ keys when the signing key was also DSA and the parameters didn't match.
+
+ It was supposed to omit the parameters when they matched the signing key:
+ the verifying software was then supposed to automatically use the CA's
+ parameters if they were absent from the end user certificate.
+
+ Omitting parameters is no longer recommended. The test was also
+ the wrong way round! This was probably due to unusual behaviour in
+ EVP_cmp_parameters() which returns 1 if the parameters match.
+ This meant that parameters were omitted when they *didn't* match and
+ the certificate was useless. Certificates signed with 'ca' didn't have
+ this bug.
+
+ *Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>*
+
+ * Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
+ The interface is as follows:
+ Applications can use
+ CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
+ CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
+ "off" is now the default.
+ The library internally uses
+ CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
+ CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
+ to disable memory-checking temporarily.
+
+ Some inconsistent states that previously were possible (and were
+ even the default) are now avoided.
+
+ -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
+ with each memory chunk allocated; this is occasionally more helpful
+ than just having a counter.
+
+ -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
+
+ -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
+ extensions.
+
+ *Bodo Moeller*
+
+ * Introduce "mode" for SSL structures (with defaults in SSL_CTX),
+ which largely parallels "options", but is for changing API behaviour,
+ whereas "options" are about protocol behaviour.
+ Initial "mode" flags are:
+
+ SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
+ a single record has been written.
+ SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
+ retries use the same buffer location.
+ (But all of the contents must be
+ copied!)
+
+ *Bodo Moeller*
+
+ * Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
+ worked.
+
+ * Fix problems with no-hmac etc.
+
+ *Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>*
+
+ * New functions RSA_get_default_method(), RSA_set_method() and
+ RSA_get_method(). These allows replacement of RSA_METHODs without having
+ to mess around with the internals of an RSA structure.
+
+ *Steve Henson*
+
+ * Fix memory leaks in DSA_do_sign and DSA_is_prime.
+ Also really enable memory leak checks in openssl.c and in some
+ test programs.
+
+ *Chad C. Mulligan, Bodo Moeller*
+
+ * Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
+ up the length of negative integers. This has now been simplified to just
+ store the length when it is first determined and use it later, rather
+ than trying to keep track of where data is copied and updating it to
+ point to the end.
+ *Steve Henson, reported by Brien Wheeler
+ <bwheeler@authentica-security.com>*
+
+ * Add a new function PKCS7_signatureVerify. This allows the verification
+ of a PKCS#7 signature but with the signing certificate passed to the
+ function itself. This contrasts with PKCS7_dataVerify which assumes the
+ certificate is present in the PKCS#7 structure. This isn't always the
+ case: certificates can be omitted from a PKCS#7 structure and be
+ distributed by "out of band" means (such as a certificate database).
+
+ *Steve Henson*
+
+ * Complete the PEM_* macros with DECLARE_PEM versions to replace the
+ function prototypes in pem.h, also change util/mkdef.pl to add the
+ necessary function names.
+
+ *Steve Henson*
+
+ * mk1mf.pl (used by Windows builds) did not properly read the
+ options set by Configure in the top level Makefile, and Configure
+ was not even able to write more than one option correctly.
+ Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
+
+ *Bodo Moeller*
+
+ * New functions CONF_load_bio() and CONF_load_fp() to allow a config
+ file to be loaded from a BIO or FILE pointer. The BIO version will
+ for example allow memory BIOs to contain config info.
+
+ *Steve Henson*
+
+ * New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
+ Whoever hopes to achieve shared-library compatibility across versions
+ must use this, not the compile-time macro.
+ (Exercise 0.9.4: Which is the minimum library version required by
+ such programs?)
+ Note: All this applies only to multi-threaded programs, others don't
+ need locks.
+
+ *Bodo Moeller*
+
+ * Add missing case to s3_clnt.c state machine -- one of the new SSL tests
+ through a BIO pair triggered the default case, i.e.
+ SSLerr(...,SSL_R_UNKNOWN_STATE).
+
+ *Bodo Moeller*
+
+ * New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
+ can use the SSL library even if none of the specific BIOs is
+ appropriate.
+
+ *Bodo Moeller*
+
+ * Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
+ for the encoded length.
+
+ *Jeon KyoungHo <khjeon@sds.samsung.co.kr>*
+
+ * Add initial documentation of the X509V3 functions.
+
+ *Steve Henson*
+
+ * Add a new pair of functions PEM_write_PKCS8PrivateKey() and
+ PEM_write_bio_PKCS8PrivateKey() that are equivalent to
+ PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
+ secure PKCS#8 private key format with a high iteration count.
+
+ *Steve Henson*
+
+ * Fix determination of Perl interpreter: A perl or perl5
+ _directory_ in $PATH was also accepted as the interpreter.
+
+ *Ralf S. Engelschall*
+
+ * Fix demos/sign/sign.c: well there wasn't anything strictly speaking
+ wrong with it but it was very old and did things like calling
+ PEM_ASN1_read() directly and used MD5 for the hash not to mention some
+ unusual formatting.
+
+ *Steve Henson*
+
+ * Fix demos/selfsign.c: it used obsolete and deleted functions, changed
+ to use the new extension code.
+
+ *Steve Henson*
+
+ * Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
+ with macros. This should make it easier to change their form, add extra
+ arguments etc. Fix a few PEM prototypes which didn't have cipher as a
+ constant.
+
+ *Steve Henson*
+
+ * Add to configuration table a new entry that can specify an alternative
+ name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
+ according to Mark Crispin <MRC@Panda.COM>.
+
+ *Bodo Moeller*
+
+f 0
+ * DES CBC did not update the IV. Weird.
+
+ *Ben Laurie*
+lse
+ des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
+ Changing the behaviour of the former might break existing programs --
+ where IV updating is needed, des_ncbc_encrypt can be used.
+ndif
+
+ * When bntest is run from "make test" it drives bc to check its
+ calculations, as well as internally checking them. If an internal check
+ fails, it needs to cause bc to give a non-zero result or make test carries
+ on without noticing the failure. Fixed.
+
+ *Ben Laurie*
+
+ * DES library cleanups.
+
+ *Ulf Möller*
+
+ * Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
+ used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
+ ciphers. NOTE: although the key derivation function has been verified
+ against some published test vectors it has not been extensively tested
+ yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
+ of v2.0.
+
+ *Steve Henson*
+
+ * Instead of "mkdir -p", which is not fully portable, use new
+ Perl script "util/mkdir-p.pl".
+
+ *Bodo Moeller*
+
+ * Rewrite the way password based encryption (PBE) is handled. It used to
+ assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
+ structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
+ but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
+ the 'parameter' field of the AlgorithmIdentifier is passed to the
+ underlying key generation function so it must do its own ASN1 parsing.
+ This has also changed the EVP_PBE_CipherInit() function which now has a
+ 'parameter' argument instead of literal salt and iteration count values
+ and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
+
+ *Steve Henson*
+
+ * Support for PKCS#5 v1.5 compatible password based encryption algorithms
+ and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
+ Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
+ KEY" because this clashed with PKCS#8 unencrypted string. Since this
+ value was just used as a "magic string" and not used directly its
+ value doesn't matter.
+
+ *Steve Henson*
+
+ * Introduce some semblance of const correctness to BN. Shame C doesn't
+ support mutable.
+
+ *Ben Laurie*
+
+ * "linux-sparc64" configuration (ultrapenguin).
+
+ *Ray Miller <ray.miller@oucs.ox.ac.uk>*
+ "linux-sparc" configuration.
+
+ *Christian Forster <fo@hawo.stw.uni-erlangen.de>*
+
+ * config now generates no-xxx options for missing ciphers.
+
+ *Ulf Möller*
+
+ * Support the EBCDIC character set (work in progress).
+ File ebcdic.c not yet included because it has a different license.
+
+ *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>*
+
+ * Support BS2000/OSD-POSIX.
+
+ *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>*
+
+ * Make callbacks for key generation use void * instead of char *.
+
+ *Ben Laurie*
+
+ * Make S/MIME samples compile (not yet tested).
+
+ *Ben Laurie*
+
+ * Additional typesafe stacks.
+
+ *Ben Laurie*
+
+ * New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
+
+ *Bodo Moeller*
+
+
+### Changes between 0.9.3 and 0.9.3a [29 May 1999] ###
+
+ * New configuration variant "sco5-gcc".
+
+ * Updated some demos.
+
+ *Sean O Riordain, Wade Scholine*
+
+ * Add missing BIO_free at exit of pkcs12 application.
+
+ *Wu Zhigang*
+
+ * Fix memory leak in conf.c.
+
+ *Steve Henson*
+
+ * Updates for Win32 to assembler version of MD5.
+
+ *Steve Henson*
+
+ * Set #! path to perl in apps/der_chop to where we found it
+ instead of using a fixed path.
+
+ *Bodo Moeller*
+
+ * SHA library changes for irix64-mips4-cc.
+
+ *Andy Polyakov*
+
+ * Improvements for VMS support.
+
+ *Richard Levitte*
+
+
+### Changes between 0.9.2b and 0.9.3 [24 May 1999] ###
+
+ * Bignum library bug fix. IRIX 6 passes "make test" now!
+ This also avoids the problems with SC4.2 and unpatched SC5.
+
+ *Andy Polyakov <appro@fy.chalmers.se>*
+
+ * New functions sk_num, sk_value and sk_set to replace the previous macros.
+ These are required because of the typesafe stack would otherwise break
+ existing code. If old code used a structure member which used to be STACK
+ and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
+ sk_num or sk_value it would produce an error because the num, data members
+ are not present in STACK_OF. Now it just produces a warning. sk_set
+ replaces the old method of assigning a value to sk_value
+ (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
+ that does this will no longer work (and should use sk_set instead) but
+ this could be regarded as a "questionable" behaviour anyway.
+
+ *Steve Henson*
+
+ * Fix most of the other PKCS#7 bugs. The "experimental" code can now
+ correctly handle encrypted S/MIME data.
+
+ *Steve Henson*
+
+ * Change type of various DES function arguments from des_cblock
+ (which means, in function argument declarations, pointer to char)
+ to des_cblock * (meaning pointer to array with 8 char elements),
+ which allows the compiler to do more typechecking; it was like
+ that back in SSLeay, but with lots of ugly casts.
+
+ Introduce new type const_des_cblock.
+
+ *Bodo Moeller*
+
+ * Reorganise the PKCS#7 library and get rid of some of the more obvious
+ problems: find RecipientInfo structure that matches recipient certificate
+ and initialise the ASN1 structures properly based on passed cipher.
+
+ *Steve Henson*
+
+ * Belatedly make the BN tests actually check the results.
+
+ *Ben Laurie*
+
+ * Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
+ to and from BNs: it was completely broken. New compilation option
+ NEG_PUBKEY_BUG to allow for some broken certificates that encode public
+ key elements as negative integers.
+
+ *Steve Henson*
+
+ * Reorganize and speed up MD5.
+
+ *Andy Polyakov <appro@fy.chalmers.se>*
+
+ * VMS support.
+
+ *Richard Levitte <richard@levitte.org>*
+
+ * New option -out to asn1parse to allow the parsed structure to be
+ output to a file. This is most useful when combined with the -strparse
+ option to examine the output of things like OCTET STRINGS.
+
+ *Steve Henson*
+
+ * Make SSL library a little more fool-proof by not requiring any longer
+ that SSL_set_{accept,connect}_state be called before
+ SSL_{accept,connect} may be used (SSL_set_..._state is omitted
+ in many applications because usually everything *appeared* to work as
+ intended anyway -- now it really works as intended).
+
+ *Bodo Moeller*
+
+ * Move openssl.cnf out of lib/.
+
+ *Ulf Möller*
+
+ * Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
+ -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
+ -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
+
+ *Ralf S. Engelschall*
+
+ * Various fixes to the EVP and PKCS#7 code. It may now be able to
+ handle PKCS#7 enveloped data properly.
+
+ *Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve*
+
+ * Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
+ copying pointers. The cert_st handling is changed by this in
+ various ways (and thus what used to be known as ctx->default_cert
+ is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
+ any longer when s->cert does not give us what we need).
+ ssl_cert_instantiate becomes obsolete by this change.
+ As soon as we've got the new code right (possibly it already is?),
+ we have solved a couple of bugs of the earlier code where s->cert
+ was used as if it could not have been shared with other SSL structures.
+
+ Note that using the SSL API in certain dirty ways now will result
+ in different behaviour than observed with earlier library versions:
+ Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
+ does not influence s as it used to.
+
+ In order to clean up things more thoroughly, inside SSL_SESSION
+ we don't use CERT any longer, but a new structure SESS_CERT
+ that holds per-session data (if available); currently, this is
+ the peer's certificate chain and, for clients, the server's certificate
+ and temporary key. CERT holds only those values that can have
+ meaningful defaults in an SSL_CTX.
+
+ *Bodo Moeller*
+
+ * New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
+ from the internal representation. Various PKCS#7 fixes: remove some
+ evil casts and set the enc_dig_alg field properly based on the signing
+ key type.
+
+ *Steve Henson*
+
+ * Allow PKCS#12 password to be set from the command line or the
+ environment. Let 'ca' get its config file name from the environment
+ variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
+ and 'x509').
+
+ *Steve Henson*
+
+ * Allow certificate policies extension to use an IA5STRING for the
+ organization field. This is contrary to the PKIX definition but
+ VeriSign uses it and IE5 only recognises this form. Document 'x509'
+ extension option.
+
+ *Steve Henson*
+
+ * Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
+ without disallowing inline assembler and the like for non-pedantic builds.
+
+ *Ben Laurie*
+
+ * Support Borland C++ builder.
+
+ *Janez Jere <jj@void.si>, modified by Ulf Möller*
+
+ * Support Mingw32.
+
+ *Ulf Möller*
+
+ * SHA-1 cleanups and performance enhancements.
+
+ *Andy Polyakov <appro@fy.chalmers.se>*
+
+ * Sparc v8plus assembler for the bignum library.
+
+ *Andy Polyakov <appro@fy.chalmers.se>*
+
+ * Accept any -xxx and +xxx compiler options in Configure.
+
+ *Ulf Möller*
+
+ * Update HPUX configuration.
+
+ *Anonymous*
+
+ * Add missing sk_<type>_unshift() function to safestack.h
+
+ *Ralf S. Engelschall*
+
+ * New function SSL_CTX_use_certificate_chain_file that sets the
+ "extra_cert"s in addition to the certificate. (This makes sense
+ only for "PEM" format files, as chains as a whole are not
+ DER-encoded.)
+
+ *Bodo Moeller*
+
+ * Support verify_depth from the SSL API.
+ x509_vfy.c had what can be considered an off-by-one-error:
+ Its depth (which was not part of the external interface)
+ was actually counting the number of certificates in a chain;
+ now it really counts the depth.
+
+ *Bodo Moeller*
+
+ * Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
+ instead of X509err, which often resulted in confusing error
+ messages since the error codes are not globally unique
+ (e.g. an alleged error in ssl3_accept when a certificate
+ didn't match the private key).
+
+ * New function SSL_CTX_set_session_id_context that allows to set a default
+ value (so that you don't need SSL_set_session_id_context for each
+ connection using the SSL_CTX).
+
+ *Bodo Moeller*
+
+ * OAEP decoding bug fix.
+
+ *Ulf Möller*
+
+ * Support INSTALL_PREFIX for package builders, as proposed by
+ David Harris.
+
+ *Bodo Moeller*
+
+ * New Configure options "threads" and "no-threads". For systems
+ where the proper compiler options are known (currently Solaris
+ and Linux), "threads" is the default.
+
+ *Bodo Moeller*
+
+ * New script util/mklink.pl as a faster substitute for util/mklink.sh.
+
+ *Bodo Moeller*
+
+ * Install various scripts to $(OPENSSLDIR)/misc, not to
+ $(INSTALLTOP)/bin -- they shouldn't clutter directories
+ such as /usr/local/bin.
+
+ *Bodo Moeller*
+
+ * "make linux-shared" to build shared libraries.
+
+ *Niels Poppe <niels@netbox.org>*
+
+ * New Configure option no-<cipher> (rsa, idea, rc5, ...).
+
+ *Ulf Möller*
+
+ * Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
+ extension adding in x509 utility.
+
+ *Steve Henson*
+
+ * Remove NOPROTO sections and error code comments.
+
+ *Ulf Möller*
+
+ * Partial rewrite of the DEF file generator to now parse the ANSI
+ prototypes.
+
+ *Steve Henson*
+
+ * New Configure options --prefix=DIR and --openssldir=DIR.
+
+ *Ulf Möller*
+
+ * Complete rewrite of the error code script(s). It is all now handled
+ by one script at the top level which handles error code gathering,
+ header rewriting and C source file generation. It should be much better
+ than the old method: it now uses a modified version of Ulf's parser to
+ read the ANSI prototypes in all header files (thus the old K&R definitions
+ aren't needed for error creation any more) and do a better job of
+ translating function codes into names. The old 'ASN1 error code imbedded
+ in a comment' is no longer necessary and it doesn't use .err files which
+ have now been deleted. Also the error code call doesn't have to appear all
+ on one line (which resulted in some large lines...).
+
+ *Steve Henson*
+
+ * Change #include filenames from <foo.h> to <openssl/foo.h>.
+
+ *Bodo Moeller*
+
+ * Change behaviour of ssl2_read when facing length-0 packets: Don't return
+ 0 (which usually indicates a closed connection), but continue reading.
+
+ *Bodo Moeller*
+
+ * Fix some race conditions.
+
+ *Bodo Moeller*
+
+ * Add support for CRL distribution points extension. Add Certificate
+ Policies and CRL distribution points documentation.
+
+ *Steve Henson*
+
+ * Move the autogenerated header file parts to crypto/opensslconf.h.
+
+ *Ulf Möller*
+
+ * Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
+ 8 of keying material. Merlin has also confirmed interop with this fix
+ between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
+
+ *Merlin Hughes <merlin@baltimore.ie>*
+
+ * Fix lots of warnings.
+
+ *Richard Levitte <levitte@stacken.kth.se>*
+
+ * In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
+ the directory spec didn't end with a LIST_SEPARATOR_CHAR.
+
+ *Richard Levitte <levitte@stacken.kth.se>*
+
+ * Fix problems with sizeof(long) == 8.
+
+ *Andy Polyakov <appro@fy.chalmers.se>*
+
+ * Change functions to ANSI C.
+
+ *Ulf Möller*
+
+ * Fix typos in error codes.
+
+ *Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller*
+
+ * Remove defunct assembler files from Configure.
+
+ *Ulf Möller*
+
+ * SPARC v8 assembler BIGNUM implementation.
+
+ *Andy Polyakov <appro@fy.chalmers.se>*
+
+ * Support for Certificate Policies extension: both print and set.
+ Various additions to support the r2i method this uses.
+
+ *Steve Henson*
+
+ * A lot of constification, and fix a bug in X509_NAME_oneline() that could
+ return a const string when you are expecting an allocated buffer.
+
+ *Ben Laurie*
+
+ * Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
+ types DirectoryString and DisplayText.
+
+ *Steve Henson*
+
+ * Add code to allow r2i extensions to access the configuration database,
+ add an LHASH database driver and add several ctx helper functions.
+
+ *Steve Henson*
+
+ * Fix an evil bug in bn_expand2() which caused various BN functions to
+ fail when they extended the size of a BIGNUM.
+
+ *Steve Henson*
+
+ * Various utility functions to handle SXNet extension. Modify mkdef.pl to
+ support typesafe stack.
+
+ *Steve Henson*
+
+ * Fix typo in SSL_[gs]et_options().
+
+ *Nils Frostberg <nils@medcom.se>*
+
+ * Delete various functions and files that belonged to the (now obsolete)
+ old X509V3 handling code.
+
+ *Steve Henson*
+
+ * New Configure option "rsaref".
+
+ *Ulf Möller*
+
+ * Don't auto-generate pem.h.
+
+ *Bodo Moeller*
+
+ * Introduce type-safe ASN.1 SETs.
+
+ *Ben Laurie*
+
+ * Convert various additional casted stacks to type-safe STACK_OF() variants.
+
+ *Ben Laurie, Ralf S. Engelschall, Steve Henson*
+
+ * Introduce type-safe STACKs. This will almost certainly break lots of code
+ that links with OpenSSL (well at least cause lots of warnings), but fear
+ not: the conversion is trivial, and it eliminates loads of evil casts. A
+ few STACKed things have been converted already. Feel free to convert more.
+ In the fullness of time, I'll do away with the STACK type altogether.
+
+ *Ben Laurie*
+
+ * Add `openssl ca -revoke <certfile>' facility which revokes a certificate
+ specified in <certfile> by updating the entry in the index.txt file.
+ This way one no longer has to edit the index.txt file manually for
+ revoking a certificate. The -revoke option does the gory details now.
+
+ *Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall*
+
+ * Fix `openssl crl -noout -text' combination where `-noout' killed the
+ `-text' option at all and this way the `-noout -text' combination was
+ inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
+
+ *Ralf S. Engelschall*
+
+ * Make sure a corresponding plain text error message exists for the
+ X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
+ verify callback function determined that a certificate was revoked.
+
+ *Ralf S. Engelschall*
+
+ * Bugfix: In test/testenc, don't test "openssl <cipher>" for
+ ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
+ all available ciphers including rc5, which was forgotten until now.
+ In order to let the testing shell script know which algorithms
+ are available, a new (up to now undocumented) command
+ "openssl list-cipher-commands" is used.
+
+ *Bodo Moeller*
+
+ * Bugfix: s_client occasionally would sleep in select() when
+ it should have checked SSL_pending() first.
+
+ *Bodo Moeller*
+
+ * New functions DSA_do_sign and DSA_do_verify to provide access to
+ the raw DSA values prior to ASN.1 encoding.
+
+ *Ulf Möller*
+
+ * Tweaks to Configure
+
+ *Niels Poppe <niels@netbox.org>*
+
+ * Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
+ yet...
+
+ *Steve Henson*
+
+ * New variables $(RANLIB) and $(PERL) in the Makefiles.
+
+ *Ulf Möller*
+
+ * New config option to avoid instructions that are illegal on the 80386.
+ The default code is faster, but requires at least a 486.
+
+ *Ulf Möller*
+
+ * Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
+ SSL2_SERVER_VERSION (not used at all) macros, which are now the
+ same as SSL2_VERSION anyway.
+
+ *Bodo Moeller*
+
+ * New "-showcerts" option for s_client.
+
+ *Bodo Moeller*
+
+ * Still more PKCS#12 integration. Add pkcs12 application to openssl
+ application. Various cleanups and fixes.
+
+ *Steve Henson*
+
+ * More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
+ modify error routines to work internally. Add error codes and PBE init
+ to library startup routines.
+
+ *Steve Henson*
+
+ * Further PKCS#12 integration. Added password based encryption, PKCS#8 and
+ packing functions to asn1 and evp. Changed function names and error
+ codes along the way.
+
+ *Steve Henson*
+
+ * PKCS12 integration: and so it begins... First of several patches to
+ slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
+ objects to objects.h
+
+ *Steve Henson*
+
+ * Add a new 'indent' option to some X509V3 extension code. Initial ASN1
+ and display support for Thawte strong extranet extension.
+
+ *Steve Henson*
+
+ * Add LinuxPPC support.
+
+ *Jeff Dubrule <igor@pobox.org>*
+
+ * Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
+ bn_div_words in alpha.s.
+
+ *Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie*
+
+ * Make sure the RSA OAEP test is skipped under -DRSAref because
+ OAEP isn't supported when OpenSSL is built with RSAref.
+
+ *Ulf Moeller <ulf@fitug.de>*
+
+ * Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
+ so they no longer are missing under -DNOPROTO.
+
+ *Soren S. Jorvang <soren@t.dk>*
+
+
+### Changes between 0.9.1c and 0.9.2b [22 Mar 1999] ###
+
+ * Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
+ doesn't work when the session is reused. Coming soon!
+
+ *Ben Laurie*
+
+ * Fix a security hole, that allows sessions to be reused in the wrong
+ context thus bypassing client cert protection! All software that uses
+ client certs and session caches in multiple contexts NEEDS PATCHING to
+ allow session reuse! A fuller solution is in the works.
+
+ *Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)*
+
+ * Some more source tree cleanups (removed obsolete files
+ crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
+ permission on "config" script to be executable) and a fix for the INSTALL
+ document.
+
+ *Ulf Moeller <ulf@fitug.de>*
+
+ * Remove some legacy and erroneous uses of malloc, free instead of
+ Malloc, Free.
+
+ *Lennart Bang <lob@netstream.se>, with minor changes by Steve*
+
+ * Make rsa_oaep_test return non-zero on error.
+
+ *Ulf Moeller <ulf@fitug.de>*
+
+ * Add support for native Solaris shared libraries. Configure
+ solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
+ if someone would make that last step automatic.
+
+ *Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>*
+
+ * ctx_size was not built with the right compiler during "make links". Fixed.
+
+ *Ben Laurie*
+
+ * Change the meaning of 'ALL' in the cipher list. It now means "everything
+ except NULL ciphers". This means the default cipher list will no longer
+ enable NULL ciphers. They need to be specifically enabled e.g. with
+ the string "DEFAULT:eNULL".
+
+ *Steve Henson*
+
+ * Fix to RSA private encryption routines: if p < q then it would
+ occasionally produce an invalid result. This will only happen with
+ externally generated keys because OpenSSL (and SSLeay) ensure p > q.
+
+ *Steve Henson*
+
+ * Be less restrictive and allow also `perl util/perlpath.pl
+ /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
+ because this way one can also use an interpreter named `perl5' (which is
+ usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
+ installed as `perl').
+
+ *Matthias Loepfe <Matthias.Loepfe@adnovum.ch>*
+
+ * Let util/clean-depend.pl work also with older Perl 5.00x versions.
+
+ *Matthias Loepfe <Matthias.Loepfe@adnovum.ch>*
+
+ * Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
+ advapi32.lib to Win32 build and change the pem test comparison
+ to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
+ suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
+ and crypto/des/ede_cbcm_enc.c.
+
+ *Steve Henson*
+
+ * DES quad checksum was broken on big-endian architectures. Fixed.
+
+ *Ben Laurie*
+
+ * Comment out two functions in bio.h that aren't implemented. Fix up the
+ Win32 test batch file so it (might) work again. The Win32 test batch file
+ is horrible: I feel ill....
+
+ *Steve Henson*
+
+ * Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
+ in e_os.h. Audit of header files to check ANSI and non ANSI
+ sections: 10 functions were absent from non ANSI section and not exported
+ from Windows DLLs. Fixed up libeay.num for new functions.
+
+ *Steve Henson*
+
+ * Make `openssl version' output lines consistent.
+
+ *Ralf S. Engelschall*
+
+ * Fix Win32 symbol export lists for BIO functions: Added
+ BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
+ to ms/libeay{16,32}.def.
+
+ *Ralf S. Engelschall*
+
+ * Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
+ fine under Unix and passes some trivial tests I've now added. But the
+ whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
+ added to make sure no one expects that this stuff really works in the
+ OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
+ up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
+ openssl_bio.xs.
+
+ *Ralf S. Engelschall*
+
+ * Fix the generation of two part addresses in perl.
+
+ *Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie*
+
+ * Add config entry for Linux on MIPS.
+
+ *John Tobey <jtobey@channel1.com>*
+
+ * Make links whenever Configure is run, unless we are on Windoze.
+
+ *Ben Laurie*
+
+ * Permit extensions to be added to CRLs using crl_section in openssl.cnf.
+ Currently only issuerAltName and AuthorityKeyIdentifier make any sense
+ in CRLs.
+
+ *Steve Henson*
+
+ * Add a useful kludge to allow package maintainers to specify compiler and
+ other platforms details on the command line without having to patch the
+ Configure script everytime: One now can use ``perl Configure
+ <id>:<details>'', i.e. platform ids are allowed to have details appended
+ to them (separated by colons). This is treated as there would be a static
+ pre-configured entry in Configure's %table under key <id> with value
+ <details> and ``perl Configure <id>'' is called. So, when you want to
+ perform a quick test-compile under FreeBSD 3.1 with pgcc and without
+ assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
+ now, which overrides the FreeBSD-elf entry on-the-fly.
+
+ *Ralf S. Engelschall*
+
+ * Disable new TLS1 ciphersuites by default: they aren't official yet.
+
+ *Ben Laurie*
+
+ * Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
+ on the `perl Configure ...' command line. This way one can compile
+ OpenSSL libraries with Position Independent Code (PIC) which is needed
+ for linking it into DSOs.
+
+ *Ralf S. Engelschall*
+
+ * Remarkably, export ciphers were totally broken and no-one had noticed!
+ Fixed.
+
+ *Ben Laurie*
+
+ * Cleaned up the LICENSE document: The official contact for any license
+ questions now is the OpenSSL core team under openssl-core@openssl.org.
+ And add a paragraph about the dual-license situation to make sure people
+ recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
+ to the OpenSSL toolkit.
+
+ *Ralf S. Engelschall*
+
+ * General source tree makefile cleanups: Made `making xxx in yyy...'
+ display consistent in the source tree and replaced `/bin/rm' by `rm'.
+ Additionally cleaned up the `make links' target: Remove unnecessary
+ semicolons, subsequent redundant removes, inline point.sh into mklink.sh
+ to speed processing and no longer clutter the display with confusing
+ stuff. Instead only the actually done links are displayed.
+
+ *Ralf S. Engelschall*
+
+ * Permit null encryption ciphersuites, used for authentication only. It used
+ to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
+ It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
+ encryption.
+
+ *Ben Laurie*
+
+ * Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
+ signed attributes when verifying signatures (this would break them),
+ the detached data encoding was wrong and public keys obtained using
+ X509_get_pubkey() weren't freed.
+
+ *Steve Henson*
+
+ * Add text documentation for the BUFFER functions. Also added a work around
+ to a Win95 console bug. This was triggered by the password read stuff: the
+ last character typed gets carried over to the next fread(). If you were
+ generating a new cert request using 'req' for example then the last
+ character of the passphrase would be CR which would then enter the first
+ field as blank.
+
+ *Steve Henson*
+
+ * Added the new `Includes OpenSSL Cryptography Software' button as
+ doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
+ button and can be used by applications based on OpenSSL to show the
+ relationship to the OpenSSL project.
+
+ *Ralf S. Engelschall*
+
+ * Remove confusing variables in function signatures in files
+ ssl/ssl_lib.c and ssl/ssl.h.
+
+ *Lennart Bong <lob@kulthea.stacken.kth.se>*
+
+ * Don't install bss_file.c under PREFIX/include/
+
+ *Lennart Bong <lob@kulthea.stacken.kth.se>*
+
+ * Get the Win32 compile working again. Modify mkdef.pl so it can handle
+ functions that return function pointers and has support for NT specific
+ stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
+ #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
+ unsigned to signed types: this was killing the Win32 compile.
+
+ *Steve Henson*
+
+ * Add new certificate file to stack functions,
+ SSL_add_dir_cert_subjects_to_stack() and
+ SSL_add_file_cert_subjects_to_stack(). These largely supplant
+ SSL_load_client_CA_file(), and can be used to add multiple certs easily
+ to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
+ This means that Apache-SSL and similar packages don't have to mess around
+ to add as many CAs as they want to the preferred list.
+
+ *Ben Laurie*
+
+ * Experiment with doxygen documentation. Currently only partially applied to
+ ssl/ssl_lib.c.
+ See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
+ openssl.doxy as the configuration file.
+
+ *Ben Laurie*
+
+ * Get rid of remaining C++-style comments which strict C compilers hate.
+
+ *Ralf S. Engelschall, pointed out by Carlos Amengual*
+
+ * Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
+ compiled in by default: it has problems with large keys.
+
+ *Steve Henson*
+
+ * Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
+ DH private keys and/or callback functions which directly correspond to
+ their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
+ is needed for applications which have to configure certificates on a
+ per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
+ (e.g. s_server).
+ For the RSA certificate situation is makes no difference, but
+ for the DSA certificate situation this fixes the "no shared cipher"
+ problem where the OpenSSL cipher selection procedure failed because the
+ temporary keys were not overtaken from the context and the API provided
+ no way to reconfigure them.
+ The new functions now let applications reconfigure the stuff and they
+ are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
+ SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
+ non-public-API function ssl_cert_instantiate() is used as a helper
+ function and also to reduce code redundancy inside ssl_rsa.c.
+
+ *Ralf S. Engelschall*
+
+ * Move s_server -dcert and -dkey options out of the undocumented feature
+ area because they are useful for the DSA situation and should be
+ recognized by the users.
+
+ *Ralf S. Engelschall*
+
+ * Fix the cipher decision scheme for export ciphers: the export bits are
+ *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
+ SSL_EXP_MASK. So, the original variable has to be used instead of the
+ already masked variable.
+
+ *Richard Levitte <levitte@stacken.kth.se>*
+
+ * Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
+
+ *Richard Levitte <levitte@stacken.kth.se>*
+
+ * Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
+ from `int' to `unsigned int' because it's a length and initialized by
+ EVP_DigestFinal() which expects an `unsigned int *'.
+
+ *Richard Levitte <levitte@stacken.kth.se>*
+
+ * Don't hard-code path to Perl interpreter on shebang line of Configure
+ script. Instead use the usual Shell->Perl transition trick.
+
+ *Ralf S. Engelschall*
+
+ * Make `openssl x509 -noout -modulus' functional also for DSA certificates
+ (in addition to RSA certificates) to match the behaviour of `openssl dsa
+ -noout -modulus' as it's already the case for `openssl rsa -noout
+ -modulus'. For RSA the -modulus is the real "modulus" while for DSA
+ currently the public key is printed (a decision which was already done by
+ `openssl dsa -modulus' in the past) which serves a similar purpose.
+ Additionally the NO_RSA no longer completely removes the whole -modulus
+ option; it now only avoids using the RSA stuff. Same applies to NO_DSA
+ now, too.
+
+ *Ralf S. Engelschall*
+
+ * Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
+ BIO. See the source (crypto/evp/bio_ok.c) for more info.
+
+ *Arne Ansper <arne@ats.cyber.ee>*
+
+ * Dump the old yucky req code that tried (and failed) to allow raw OIDs
+ to be added. Now both 'req' and 'ca' can use new objects defined in the
+ config file.
+
+ *Steve Henson*
+
+ * Add cool BIO that does syslog (or event log on NT).
+
+ *Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie*
+
+ * Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
+ TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
+ TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
+ Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
+
+ *Ben Laurie*
+
+ * Add preliminary config info for new extension code.
+
+ *Steve Henson*
+
+ * Make RSA_NO_PADDING really use no padding.
+
+ *Ulf Moeller <ulf@fitug.de>*
+
+ * Generate errors when private/public key check is done.
+
+ *Ben Laurie*
+
+ * Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
+ for some CRL extensions and new objects added.
+
+ *Steve Henson*
+
+ * Really fix the ASN1 IMPLICIT bug this time... Partial support for private
+ key usage extension and fuller support for authority key id.
+
+ *Steve Henson*
+
+ * Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
+ padding method for RSA, which is recommended for new applications in PKCS
+ #1 v2.0 (RFC 2437, October 1998).
+ OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
+ foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
+ against Bleichbacher's attack on RSA.
+ *Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
+ Ben Laurie*
+
+ * Updates to the new SSL compression code
+
+ *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
+
+ * Fix so that the version number in the master secret, when passed
+ via RSA, checks that if TLS was proposed, but we roll back to SSLv3
+ (because the server will not accept higher), that the version number
+ is 0x03,0x01, not 0x03,0x00
+
+ *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
+
+ * Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
+ leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
+ in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
+
+ *Steve Henson*
+
+ * Support for RAW extensions where an arbitrary extension can be
+ created by including its DER encoding. See apps/openssl.cnf for
+ an example.
+
+ *Steve Henson*
+
+ * Make sure latest Perl versions don't interpret some generated C array
+ code as Perl array code in the crypto/err/err_genc.pl script.
+
+ *Lars Weber <3weber@informatik.uni-hamburg.de>*
+
+ * Modify ms/do_ms.bat to not generate assembly language makefiles since
+ not many people have the assembler. Various Win32 compilation fixes and
+ update to the INSTALL.W32 file with (hopefully) more accurate Win32
+ build instructions.
+
+ *Steve Henson*
+
+ * Modify configure script 'Configure' to automatically create crypto/date.h
+ file under Win32 and also build pem.h from pem.org. New script
+ util/mkfiles.pl to create the MINFO file on environments that can't do a
+ 'make files': perl util/mkfiles.pl >MINFO should work.
+
+ *Steve Henson*
+
+ * Major rework of DES function declarations, in the pursuit of correctness
+ and purity. As a result, many evil casts evaporated, and some weirdness,
+ too. You may find this causes warnings in your code. Zapping your evil
+ casts will probably fix them. Mostly.
+
+ *Ben Laurie*
+
+ * Fix for a typo in asn1.h. Bug fix to object creation script
+ obj_dat.pl. It considered a zero in an object definition to mean
+ "end of object": none of the objects in objects.h have any zeros
+ so it wasn't spotted.
+
+ *Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>*
+
+ * Add support for Triple DES Cipher Block Chaining with Output Feedback
+ Masking (CBCM). In the absence of test vectors, the best I have been able
+ to do is check that the decrypt undoes the encrypt, so far. Send me test
+ vectors if you have them.
+
+ *Ben Laurie*
+
+ * Correct calculation of key length for export ciphers (too much space was
+ allocated for null ciphers). This has not been tested!
+
+ *Ben Laurie*
+
+ * Modifications to the mkdef.pl for Win32 DEF file creation. The usage
+ message is now correct (it understands "crypto" and "ssl" on its
+ command line). There is also now an "update" option. This will update
+ the util/ssleay.num and util/libeay.num files with any new functions.
+ If you do a:
+ perl util/mkdef.pl crypto ssl update
+ it will update them.
+
+ *Steve Henson*
+
+ * Overhauled the Perl interface (perl/*):
+ - ported BN stuff to OpenSSL's different BN library
+ - made the perl/ source tree CVS-aware
+ - renamed the package from SSLeay to OpenSSL (the files still contain
+ their history because I've copied them in the repository)
+ - removed obsolete files (the test scripts will be replaced
+ by better Test::Harness variants in the future)
+
+ *Ralf S. Engelschall*
+
+ * First cut for a very conservative source tree cleanup:
+ 1. merge various obsolete readme texts into doc/ssleay.txt
+ where we collect the old documents and readme texts.
+ 2. remove the first part of files where I'm already sure that we no
+ longer need them because of three reasons: either they are just temporary
+ files which were left by Eric or they are preserved original files where
+ I've verified that the diff is also available in the CVS via "cvs diff
+ -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
+ the crypto/md/ stuff).
+
+ *Ralf S. Engelschall*
+
+ * More extension code. Incomplete support for subject and issuer alt
+ name, issuer and authority key id. Change the i2v function parameters
+ and add an extra 'crl' parameter in the X509V3_CTX structure: guess
+ what that's for :-) Fix to ASN1 macro which messed up
+ IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
+
+ *Steve Henson*
+
+ * Preliminary support for ENUMERATED type. This is largely copied from the
+ INTEGER code.
+
+ *Steve Henson*
+
+ * Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
+
+ *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
+
+ * Make sure `make rehash' target really finds the `openssl' program.
+
+ *Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>*
+
+ * Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
+ like to hear about it if this slows down other processors.
+
+ *Ben Laurie*
+
+ * Add CygWin32 platform information to Configure script.
+
+ *Alan Batie <batie@aahz.jf.intel.com>*
+
+ * Fixed ms/32all.bat script: `no_asm' -> `no-asm'
+
+ *Rainer W. Gerling <gerling@mpg-gv.mpg.de>*
+
+ * New program nseq to manipulate netscape certificate sequences
+
+ *Steve Henson*
+
+ * Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
+ few typos.
+
+ *Steve Henson*
+
+ * Fixes to BN code. Previously the default was to define BN_RECURSION
+ but the BN code had some problems that would cause failures when
+ doing certificate verification and some other functions.
+
+ *Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)*
+
+ * Add ASN1 and PEM code to support netscape certificate sequences.
+
+ *Steve Henson*
+
+ * Add ASN1 and PEM code to support netscape certificate sequences.
+
+ *Steve Henson*
+
+ * Add several PKIX and private extended key usage OIDs.
+
+ *Steve Henson*
+
+ * Modify the 'ca' program to handle the new extension code. Modify
+ openssl.cnf for new extension format, add comments.
+
+ *Steve Henson*
+
+ * More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
+ and add a sample to openssl.cnf so req -x509 now adds appropriate
+ CA extensions.
+
+ *Steve Henson*
+
+ * Continued X509 V3 changes. Add to other makefiles, integrate with the
+ error code, add initial support to X509_print() and x509 application.
+
+ *Steve Henson*
+
+ * Takes a deep breath and start adding X509 V3 extension support code. Add
+ files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
+ stuff is currently isolated and isn't even compiled yet.
+
+ *Steve Henson*
+
+ * Continuing patches for GeneralizedTime. Fix up certificate and CRL
+ ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
+ Removed the versions check from X509 routines when loading extensions:
+ this allows certain broken certificates that don't set the version
+ properly to be processed.
+
+ *Steve Henson*
+
+ * Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
+ Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
+ can still be regenerated with "make depend".
+
+ *Ben Laurie*
+
+ * Spelling mistake in C version of CAST-128.
+
+ *Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>*
+
+ * Changes to the error generation code. The perl script err-code.pl
+ now reads in the old error codes and retains the old numbers, only
+ adding new ones if necessary. It also only changes the .err files if new
+ codes are added. The makefiles have been modified to only insert errors
+ when needed (to avoid needlessly modifying header files). This is done
+ by only inserting errors if the .err file is newer than the auto generated
+ C file. To rebuild all the error codes from scratch (the old behaviour)
+ either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
+ or delete all the .err files.
+
+ *Steve Henson*
+
+ * CAST-128 was incorrectly implemented for short keys. The C version has
+ been fixed, but is untested. The assembler versions are also fixed, but
+ new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
+ to regenerate it if needed.
+ *Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
+ Hagino <itojun@kame.net>*
+
+ * File was opened incorrectly in randfile.c.
+
+ *Ulf Möller <ulf@fitug.de>*
+
+ * Beginning of support for GeneralizedTime. d2i, i2d, check and print
+ functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
+ GeneralizedTime. ASN1_TIME is the proper type used in certificates et
+ al: it's just almost always a UTCTime. Note this patch adds new error
+ codes so do a "make errors" if there are problems.
+
+ *Steve Henson*
+
+ * Correct Linux 1 recognition in config.
+
+ *Ulf Möller <ulf@fitug.de>*
+
+ * Remove pointless MD5 hash when using DSA keys in ca.
+
+ *Anonymous <nobody@replay.com>*
+
+ * Generate an error if given an empty string as a cert directory. Also
+ generate an error if handed NULL (previously returned 0 to indicate an
+ error, but didn't set one).
+
+ *Ben Laurie, reported by Anonymous <nobody@replay.com>*
+
+ * Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
+
+ *Ben Laurie*
+
+ * Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
+ parameters. This was causing a warning which killed off the Win32 compile.
+
+ *Steve Henson*
+
+ * Remove C++ style comments from crypto/bn/bn_local.h.
+
+ *Neil Costigan <neil.costigan@celocom.com>*
+
+ * The function OBJ_txt2nid was broken. It was supposed to return a nid
+ based on a text string, looking up short and long names and finally
+ "dot" format. The "dot" format stuff didn't work. Added new function
+ OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
+ OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
+ OID is not part of the table.
+
+ *Steve Henson*
+
+ * Add prototypes to X509 lookup/verify methods, fixing a bug in
+ X509_LOOKUP_by_alias().
+
+ *Ben Laurie*
+
+ * Sort openssl functions by name.
+
+ *Ben Laurie*
+
+ * Get the gendsa program working (hopefully) and add it to app list. Remove
+ encryption from sample DSA keys (in case anyone is interested the password
+ was "1234").
+
+ *Steve Henson*
+
+ * Make _all_ *_free functions accept a NULL pointer.
+
+ *Frans Heymans <fheymans@isaserver.be>*
+
+ * If a DH key is generated in s3_srvr.c, don't blow it by trying to use
+ NULL pointers.
+
+ *Anonymous <nobody@replay.com>*
+
+ * s_server should send the CAfile as acceptable CAs, not its own cert.
+
+ *Bodo Moeller <3moeller@informatik.uni-hamburg.de>*
+
+ * Don't blow it for numeric -newkey arguments to apps/req.
+
+ *Bodo Moeller <3moeller@informatik.uni-hamburg.de>*
+
+ * Temp key "for export" tests were wrong in s3_srvr.c.
+
+ *Anonymous <nobody@replay.com>*
+
+ * Add prototype for temp key callback functions
+ SSL_CTX_set_tmp_{rsa,dh}_callback().
+
+ *Ben Laurie*
+
+ * Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
+ DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
+
+ *Steve Henson*
+
+ * X509_name_add_entry() freed the wrong thing after an error.
+
+ *Arne Ansper <arne@ats.cyber.ee>*
+
+ * rsa_eay.c would attempt to free a NULL context.
+
+ *Arne Ansper <arne@ats.cyber.ee>*
+
+ * BIO_s_socket() had a broken should_retry() on Windoze.
+
+ *Arne Ansper <arne@ats.cyber.ee>*
+
+ * BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
+
+ *Arne Ansper <arne@ats.cyber.ee>*
+
+ * Make sure the already existing X509_STORE->depth variable is initialized
+ in X509_STORE_new(), but document the fact that this variable is still
+ unused in the certificate verification process.
+
+ *Ralf S. Engelschall*
+
+ * Fix the various library and apps files to free up pkeys obtained from
+ X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
+
+ *Steve Henson*
+
+ * Fix reference counting in X509_PUBKEY_get(). This makes
+ demos/maurice/example2.c work, amongst others, probably.
+
+ *Steve Henson and Ben Laurie*
+
+ * First cut of a cleanup for apps/. First the `ssleay' program is now named
+ `openssl' and second, the shortcut symlinks for the `openssl <command>'
+ are no longer created. This way we have a single and consistent command
+ line interface `openssl <command>', similar to `cvs <command>'.
+
+ *Ralf S. Engelschall, Paul Sutton and Ben Laurie*
+
+ * ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
+ BIT STRING wrapper always have zero unused bits.
+
+ *Steve Henson*
+
+ * Add CA.pl, perl version of CA.sh, add extended key usage OID.
+
+ *Steve Henson*
+
+ * Make the top-level INSTALL documentation easier to understand.
+
+ *Paul Sutton*
+
+ * Makefiles updated to exit if an error occurs in a sub-directory
+ make (including if user presses ^C) [Paul Sutton]
+
+ * Make Montgomery context stuff explicit in RSA data structure.
+
+ *Ben Laurie*
+
+ * Fix build order of pem and err to allow for generated pem.h.
+
+ *Ben Laurie*
+
+ * Fix renumbering bug in X509_NAME_delete_entry().
+
+ *Ben Laurie*
+
+ * Enhanced the err-ins.pl script so it makes the error library number
+ global and can add a library name. This is needed for external ASN1 and
+ other error libraries.
+
+ *Steve Henson*
+
+ * Fixed sk_insert which never worked properly.
+
+ *Steve Henson*
+
+ * Fix ASN1 macros so they can handle indefinite length constructed
+ EXPLICIT tags. Some non standard certificates use these: they can now
+ be read in.
+
+ *Steve Henson*
+
+ * Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
+ into a single doc/ssleay.txt bundle. This way the information is still
+ preserved but no longer messes up this directory. Now it's new room for
+ the new set of documentation files.
+
+ *Ralf S. Engelschall*
+
+ * SETs were incorrectly DER encoded. This was a major pain, because they
+ shared code with SEQUENCEs, which aren't coded the same. This means that
+ almost everything to do with SETs or SEQUENCEs has either changed name or
+ number of arguments.
+
+ *Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>*
+
+ * Fix test data to work with the above.
+
+ *Ben Laurie*
+
+ * Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
+ was already fixed by Eric for 0.9.1 it seems.
+
+ *Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>*
+
+ * Autodetect FreeBSD3.
+
+ *Ben Laurie*
+
+ * Fix various bugs in Configure. This affects the following platforms:
+ nextstep
+ ncr-scde
+ unixware-2.0
+ unixware-2.0-pentium
+ sco5-cc.
+
+ *Ben Laurie*
+
+ * Eliminate generated files from CVS. Reorder tests to regenerate files
+ before they are needed.
+
+ *Ben Laurie*
+
+ * Generate Makefile.ssl from Makefile.org (to keep CVS happy).
+
+ *Ben Laurie*
+
+
+### Changes between 0.9.1b and 0.9.1c [23-Dec-1998] ###
+
+ * Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
+ changed SSLeay to OpenSSL in version strings.
+
+ *Ralf S. Engelschall*
+
+ * Some fixups to the top-level documents.
+
+ *Paul Sutton*
+
+ * Fixed the nasty bug where rsaref.h was not found under compile-time
+ because the symlink to include/ was missing.
+
+ *Ralf S. Engelschall*
+
+ * Incorporated the popular no-RSA/DSA-only patches
+ which allow to compile a RSA-free SSLeay.
+
+ *Andrew Cooke / Interrader Ldt., Ralf S. Engelschall*
+
+ * Fixed nasty rehash problem under `make -f Makefile.ssl links'
+ when "ssleay" is still not found.
+
+ *Ralf S. Engelschall*
+
+ * Added more platforms to Configure: Cray T3E, HPUX 11,
+
+ *Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>*
+
+ * Updated the README file.
+
+ *Ralf S. Engelschall*
+
+ * Added various .cvsignore files in the CVS repository subdirs
+ to make a "cvs update" really silent.
+
+ *Ralf S. Engelschall*
+
+ * Recompiled the error-definition header files and added
+ missing symbols to the Win32 linker tables.
+
+ *Ralf S. Engelschall*
+
+ * Cleaned up the top-level documents;
+ o new files: CHANGES and LICENSE
+ o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
+ o merged COPYRIGHT into LICENSE
+ o removed obsolete TODO file
+ o renamed MICROSOFT to INSTALL.W32
+
+ *Ralf S. Engelschall*
+
+ * Removed dummy files from the 0.9.1b source tree:
+ crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
+ crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
+ crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
+ crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
+ util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
+
+ *Ralf S. Engelschall*
+
+ * Added various platform portability fixes.
+
+ *Mark J. Cox*
+
+ * The Genesis of the OpenSSL rpject:
+ We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
+ Young and Tim J. Hudson created while they were working for C2Net until
+ summer 1998.
+
+ *The OpenSSL Project*
+
+
+### Changes between 0.9.0b and 0.9.1b [not released] ###
+
+ * Updated a few CA certificates under certs/
+
+ *Eric A. Young*
+
+ * Changed some BIGNUM api stuff.
+
+ *Eric A. Young*
+
+ * Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
+ DGUX x86, Linux Alpha, etc.
+
+ *Eric A. Young*
+
+ * New COMP library [crypto/comp/] for SSL Record Layer Compression:
+ RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
+ available).
+
+ *Eric A. Young*
+
+ * Add -strparse option to asn1pars program which parses nested
+ binary structures
+
+ *Dr Stephen Henson <shenson@bigfoot.com>*
+
+ * Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
+
+ *Eric A. Young*
+
+ * DSA fix for "ca" program.
+
+ *Eric A. Young*
+
+ * Added "-genkey" option to "dsaparam" program.
+
+ *Eric A. Young*
+
+ * Added RIPE MD160 (rmd160) message digest.
+
+ *Eric A. Young*
+
+ * Added -a (all) option to "ssleay version" command.
+
+ *Eric A. Young*
+
+ * Added PLATFORM define which is the id given to Configure.
+
+ *Eric A. Young*
+
+ * Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
+
+ *Eric A. Young*
+
+ * Extended the ASN.1 parser routines.
+
+ *Eric A. Young*
+
+ * Extended BIO routines to support REUSEADDR, seek, tell, etc.
+
+ *Eric A. Young*
+
+ * Added a BN_CTX to the BN library.
+
+ *Eric A. Young*
+
+ * Fixed the weak key values in DES library
+
+ *Eric A. Young*
+
+ * Changed API in EVP library for cipher aliases.
+
+ *Eric A. Young*
+
+ * Added support for RC2/64bit cipher.
+
+ *Eric A. Young*
+
+ * Converted the lhash library to the crypto/mem.c functions.
+
+ *Eric A. Young*
+
+ * Added more recognized ASN.1 object ids.
+
+ *Eric A. Young*
+
+ * Added more RSA padding checks for SSL/TLS.
+
+ *Eric A. Young*
+
+ * Added BIO proxy/filter functionality.
+
+ *Eric A. Young*
+
+ * Added extra_certs to SSL_CTX which can be used
+ send extra CA certificates to the client in the CA cert chain sending
+ process. It can be configured with SSL_CTX_add_extra_chain_cert().
+
+ *Eric A. Young*
+
+ * Now Fortezza is denied in the authentication phase because
+ this is key exchange mechanism is not supported by SSLeay at all.
+
+ *Eric A. Young*
+
+ * Additional PKCS1 checks.
+
+ *Eric A. Young*
+
+ * Support the string "TLSv1" for all TLS v1 ciphers.
+
+ *Eric A. Young*
+
+ * Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
+ ex_data index of the SSL context in the X509_STORE_CTX ex_data.
+
+ *Eric A. Young*
+
+ * Fixed a few memory leaks.
+
+ *Eric A. Young*
+
+ * Fixed various code and comment typos.
+
+ *Eric A. Young*
+
+ * A minor bug in ssl/s3_clnt.c where there would always be 4 0
+ bytes sent in the client random.
+
+ *Edward Bishop <ebishop@spyglass.com>*
projects / oweals / openssl.git / commitdiff