5 This is a high-level summary of the most important changes.
6 For a full list of changes, see the git commit log; for example,
7 https://github.com/openssl/openssl/commits/ and pick the appropriate
10 Changes between 1.1.1 and 3.0.0 [xx XXX xxxx]
12 *) The test suite is changed to preserve results of each test recipe.
13 A new directory test-runs/ with subdirectories named like the
14 test recipes are created in the build tree for this purpose.
17 *) The command line utilities ecparam and ec have been deprecated. Instead
18 use the pkeyparam, pkey and genpkey programs.
21 *) All of the low level RSA functions have been deprecated including:
23 RSA_new_method, RSA_bits, RSA_size, RSA_security_bits,
24 RSA_get0_pss_params, RSA_get_version, RSA_get0_engine,
25 RSA_generate_key_ex, RSA_generate_multi_prime_key,
26 RSA_X931_derive_ex, RSA_X931_generate_key_ex, RSA_check_key,
27 RSA_check_key_ex, RSA_public_encrypt, RSA_private_encrypt,
28 RSA_public_decrypt, RSA_private_decrypt, RSA_set_default_method,
29 RSA_get_default_method, RSA_null_method, RSA_get_method, RSA_set_method,
30 RSA_PKCS1_OpenSSL, RSA_print_fp, RSA_print, RSA_sign, RSA_verify,
31 RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING,
32 RSA_blinding_on, RSA_blinding_off, RSA_setup_blinding,
33 RSA_padding_add_PKCS1_type_1, RSA_padding_check_PKCS1_type_1,
34 RSA_padding_add_PKCS1_type_2, RSA_padding_check_PKCS1_type_2,
35 PKCS1_MGF1, RSA_padding_add_PKCS1_OAEP, RSA_padding_check_PKCS1_OAEP,
36 RSA_padding_add_PKCS1_OAEP_mgf1, RSA_padding_check_PKCS1_OAEP_mgf1,
37 RSA_padding_add_SSLv23, RSA_padding_check_SSLv23,
38 RSA_padding_add_none, RSA_padding_check_none, RSA_padding_add_X931,
39 RSA_padding_check_X931, RSA_X931_hash_id, RSA_verify_PKCS1_PSS,
40 RSA_padding_add_PKCS1_PSS, RSA_verify_PKCS1_PSS_mgf1,
41 RSA_padding_add_PKCS1_PSS_mgf1, RSA_set_ex_data, RSA_get_ex_data,
42 RSA_meth_new, RSA_meth_free, RSA_meth_dup, RSA_meth_get0_name,
43 RSA_meth_set1_name, RSA_meth_get_flags, RSA_meth_set_flags,
44 RSA_meth_get0_app_data, RSA_meth_set0_app_data, RSA_meth_get_pub_enc,
45 RSA_meth_set_pub_enc, RSA_meth_get_pub_dec, RSA_meth_set_pub_dec,
46 RSA_meth_get_priv_enc, RSA_meth_set_priv_enc, RSA_meth_get_priv_dec,
47 RSA_meth_set_priv_dec, RSA_meth_get_mod_exp, RSA_meth_set_mod_exp,
48 RSA_meth_get_bn_mod_exp, RSA_meth_set_bn_mod_exp, RSA_meth_get_init,
49 RSA_meth_set_init, RSA_meth_get_finish, RSA_meth_set_finish,
50 RSA_meth_get_sign, RSA_meth_set_sign, RSA_meth_get_verify,
51 RSA_meth_set_verify, RSA_meth_get_keygen, RSA_meth_set_keygen,
52 RSA_meth_get_multi_prime_keygen and RSA_meth_set_multi_prime_keygen.
54 Use of these low level functions has been informally discouraged for a long
55 time. Instead applications should use L<EVP_PKEY_encrypt_init(3)>,
56 L<EVP_PKEY_encrypt(3)>, L<EVP_PKEY_decrypt_init(3)> and
57 L<EVP_PKEY_decrypt(3)>.
60 *) X509 certificates signed using SHA1 are no longer allowed at security
62 In TLS/SSL the default security level is 1. It can be set either
63 using the cipher string with @SECLEVEL, or calling
64 SSL_CTX_set_security_level(). If the leaf certificate is signed with SHA-1,
65 a call to SSL_CTX_use_certificate() will fail if the security level is not
67 Outside TLS/SSL, the default security level is -1 (effectively 0). It can
68 be set using X509_VERIFY_PARAM_set_auth_level() or using the -auth_level
72 *) The command line utilities dhparam, dsa, gendsa and dsaparam have been
73 deprecated. Instead use the pkeyparam, pkey, genpkey and pkeyparam
74 programs respectively.
77 *) All of the low level DH functions have been deprecated including:
79 DH_OpenSSL, DH_set_default_method, DH_get_default_method, DH_set_method,
80 DH_new_method, DH_bits, DH_size, DH_security_bits, DH_get_ex_new_index,
81 DH_set_ex_data, DH_get_ex_data, DH_generate_parameters_ex,
82 DH_check_params_ex, DH_check_ex, DH_check_pub_key_ex,
83 DH_check, DH_check_pub_key, DH_generate_key, DH_compute_key,
84 DH_compute_key_padded, DHparams_print_fp, DHparams_print, DH_get_nid,
85 DH_KDF_X9_42, DH_get0_engine, DH_get_length, DH_set_length, DH_meth_new,
86 DH_meth_free, DH_meth_dup, DH_meth_get0_name, DH_meth_set1_name,
87 DH_meth_get_flags, DH_meth_set_flags, DH_meth_get0_app_data,
88 DH_meth_set0_app_data, DH_meth_get_generate_key,
89 DH_meth_set_generate_key, DH_meth_get_compute_key,
90 DH_meth_set_compute_key, DH_meth_get_bn_mod_exp,
91 DH_meth_set_bn_mod_exp, DH_meth_get_init, DH_meth_set_init,
92 DH_meth_get_finish, DH_meth_set_finish, DH_meth_get_generate_params
93 and DH_meth_set_generate_params.
95 Use of these low level functions has been informally discouraged for a long
96 time. Instead applications should use L<EVP_PKEY_derive_init(3)>
97 and L<EVP_PKEY_derive(3)>.
100 *) All of the low level DSA functions have been deprecated including:
102 DSA_do_sign, DSA_do_verify, DSA_OpenSSL, DSA_set_default_method,
103 DSA_get_default_method, DSA_set_method, DSA_get_method, DSA_new_method,
104 DSA_sign_setup, DSA_sign, DSA_verify, DSA_get_ex_new_index,
105 DSA_set_ex_data, DSA_get_ex_data, DSA_generate_parameters_ex,
106 DSA_generate_key, DSA_meth_new, DSA_get0_engine, DSA_meth_free,
107 DSA_meth_dup, DSA_meth_get0_name, DSA_meth_set1_name, DSA_meth_get_flags,
108 DSA_meth_set_flags, DSA_meth_get0_app_data, DSA_meth_set0_app_data,
109 DSA_meth_get_sign, DSA_meth_set_sign, DSA_meth_get_sign_setup,
110 DSA_meth_set_sign_setup, DSA_meth_get_verify, DSA_meth_set_verify,
111 DSA_meth_get_mod_exp, DSA_meth_set_mod_exp, DSA_meth_get_bn_mod_exp,
112 DSA_meth_set_bn_mod_exp, DSA_meth_get_init, DSA_meth_set_init,
113 DSA_meth_get_finish, DSA_meth_set_finish, DSA_meth_get_paramgen,
114 DSA_meth_set_paramgen, DSA_meth_get_keygen and DSA_meth_set_keygen.
116 Use of these low level functions has been informally discouraged for a long
117 time. Instead applications should use L<EVP_DigestSignInit_ex(3)>,
118 L<EVP_DigestSignUpdate(3)> and L<EVP_DigestSignFinal(3)>.
121 *) Reworked the treatment of EC EVP_PKEYs with the SM2 curve to
122 automatically become EVP_PKEY_SM2 rather than EVP_PKEY_EC.
123 This means that applications don't have to look at the curve NID and
124 'EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2)' to get SM2 computations.
125 However, they still can, that EVP_PKEY_set_alias_type() call acts as
126 a no-op when the EVP_PKEY is already of the given type.
128 Parameter and key generation is also reworked to make it possible
129 to generate EVP_PKEY_SM2 parameters and keys without having to go
130 through EVP_PKEY_EC generation and then change the EVP_PKEY type.
131 However, code that does the latter will still work as before.
134 *) Deprecated low level ECDH and ECDSA functions. These include:
136 ECDH_compute_key, ECDSA_do_sign, ECDSA_do_sign_ex, ECDSA_do_verify,
137 ECDSA_sign_setup, ECDSA_sign, ECDSA_sign_ex, ECDSA_verify and
140 Use of these low level functions has been informally discouraged for a long
141 time. Instead applications should use the EVP_PKEY_derive(3),
142 EVP_DigestSign(3) and EVP_DigestVerify(3) functions.
145 *) Deprecated the EC_KEY_METHOD functions. These include:
147 EC_KEY_METHOD_new, EC_KEY_METHOD_free, EC_KEY_METHOD_set_init,
148 EC_KEY_METHOD_set_keygen, EC_KEY_METHOD_set_compute_key,
149 EC_KEY_METHOD_set_sign, EC_KEY_METHOD_set_verify,
150 EC_KEY_METHOD_get_init, EC_KEY_METHOD_get_keygen,
151 EC_KEY_METHOD_get_compute_key, EC_KEY_METHOD_get_sign and
152 EC_KEY_METHOD_get_verify.
154 Instead applications and extension writers should use the OSSL_PROVIDER
158 *) Deprecated EVP_PKEY_decrypt_old(), please use EVP_PKEY_decrypt_init()
159 and EVP_PKEY_decrypt() instead.
160 Deprecated EVP_PKEY_encrypt_old(), please use EVP_PKEY_encrypt_init()
161 and EVP_PKEY_encrypt() instead.
164 *) Enhanced the documentation of EVP_PKEY_size(), EVP_PKEY_bits()
165 and EVP_PKEY_security_bits(). Especially EVP_PKEY_size() needed
166 a new formulation to include all the things it can be used for,
167 as well as words of caution.
170 *) The SSL_CTX_set_tlsext_ticket_key_cb(3) function has been deprecated.
171 Instead used the new SSL_CTX_set_tlsext_ticket_key_evp_cb(3) function.
174 *) All of the low level HMAC functions have been deprecated including:
175 HMAC, HMAC_size, HMAC_CTX_new, HMAC_CTX_reset, HMAC_CTX_free,
176 HMAC_Init_ex, HMAC_Update, HMAC_Final, HMAC_CTX_copy, HMAC_CTX_set_flags
178 Use of these low level functions has been informally discouraged for a long
179 time. Instead applications should use L<EVP_MAC_CTX_new(3)>,
180 L<EVP_MAC_CTX_free(3)>, L<EVP_MAC_init(3)>, L<EVP_MAC_update(3)>
181 and L<EVP_MAC_final(3)>.
184 *) All of the low level CMAC functions have been deprecated including:
185 CMAC_CTX_new, CMAC_CTX_cleanup, CMAC_CTX_free, CMAC_CTX_get0_cipher_ctx,
186 CMAC_CTX_copy, CMAC_Init, CMAC_Update, CMAC_Final and CMAC_resume.
187 Use of these low level functions has been informally discouraged for a long
188 time. Instead applications should use L<EVP_MAC_CTX_new(3)>,
189 L<EVP_MAC_CTX_free(3)>, L<EVP_MAC_init(3)>, L<EVP_MAC_update(3)>
190 and L<EVP_MAC_final(3)>.
193 *) Over two thousand fixes were made to the documentation, including:
194 - Common options (such as -rand/-writerand, TLS version control, etc)
195 were refactored and point to newly-enhanced descriptions in openssl.pod.
196 - Added style conformance for all options (with help from Richard Levitte),
197 documented all reported missing options, added a CI build to check
198 that all options are documented and that no unimplemented options
200 - Documented some internals, such as all use of environment variables.
201 - Addressed all internal broken L<> references.
204 *) All of the low level MD2, MD4, MD5, MDC2, RIPEMD160, SHA1, SHA224, SHA256,
205 SHA384, SHA512 and Whirlpool digest functions have been deprecated.
208 MD2, MD2_options, MD2_Init, MD2_Update, MD2_Final, MD4, MD4_Init,
209 MD4_Update, MD4_Final, MD4_Transform, MD5, MD5_Init, MD5_Update,
210 MD5_Final, MD5_Transform, MDC2, MDC2_Init, MDC2_Update, MDC2_Final,
211 RIPEMD160, RIPEMD160_Init, RIPEMD160_Update, RIPEMD160_Final,
212 RIPEMD160_Transform, SHA1_Init, SHA1_Update, SHA1_Final, SHA1_Transform,
213 SHA224_Init, SHA224_Update, SHA224_Final, SHA224_Transform, SHA256_Init,
214 SHA256_Update, SHA256_Final, SHA256_Transform, SHA384, SHA384_Init,
215 SHA384_Update, SHA384_Final, SHA512, SHA512_Init, SHA512_Update,
216 SHA512_Final, SHA512_Transform, WHIRLPOOL, WHIRLPOOL_Init,
217 WHIRLPOOL_Update, WHIRLPOOL_BitUpdate and WHIRLPOOL_Final.
219 Use of these low level functions has been informally discouraged
220 for a long time. Applications should use the EVP_DigestInit_ex(3),
221 EVP_DigestUpdate(3) and EVP_DigestFinal_ex(3) functions instead.
224 *) Corrected the documentation of the return values from the EVP_DigestSign*
225 set of functions. The documentation mentioned negative values for some
226 errors, but this was never the case, so the mention of negative values
229 Code that followed the documentation and thereby check with something
230 like 'EVP_DigestSignInit(...) <= 0' will continue to work undisturbed.
233 *) All of the low level cipher functions have been deprecated including:
235 AES_options, AES_set_encrypt_key, AES_set_decrypt_key, AES_encrypt,
236 AES_decrypt, AES_ecb_encrypt, AES_cbc_encrypt, AES_cfb128_encrypt,
237 AES_cfb1_encrypt, AES_cfb8_encrypt, AES_ofb128_encrypt,
238 AES_wrap_key, AES_unwrap_key, BF_set_key, BF_encrypt, BF_decrypt,
239 BF_ecb_encrypt, BF_cbc_encrypt, BF_cfb64_encrypt, BF_ofb64_encrypt,
240 BF_options, Camellia_set_key, Camellia_encrypt, Camellia_decrypt,
241 Camellia_ecb_encrypt, Camellia_cbc_encrypt, Camellia_cfb128_encrypt,
242 Camellia_cfb1_encrypt, Camellia_cfb8_encrypt, Camellia_ofb128_encrypt,
243 Camellia_ctr128_encrypt, CAST_set_key, CAST_encrypt, CAST_decrypt,
244 CAST_ecb_encrypt, CAST_cbc_encrypt, CAST_cfb64_encrypt,
245 CAST_ofb64_encrypt, DES_options, DES_encrypt1, DES_encrypt2,
246 DES_encrypt3, DES_decrypt3, DES_cbc_encrypt, DES_ncbc_encrypt,
247 DES_pcbc_encrypt, DES_xcbc_encrypt, DES_cfb_encrypt, DES_cfb64_encrypt,
248 DES_ecb_encrypt, DES_ofb_encrypt, DES_ofb64_encrypt, DES_random_key,
249 DES_set_odd_parity, DES_check_key_parity, DES_is_weak_key, DES_set_key,
250 DES_key_sched, DES_set_key_checked, DES_set_key_unchecked,
251 DES_string_to_key, DES_string_to_2keys, DES_fixup_key_parity,
252 DES_ecb2_encrypt, DES_ede2_cbc_encrypt, DES_ede2_cfb64_encrypt,
253 DES_ede2_ofb64_encrypt, DES_ecb3_encrypt, DES_ede3_cbc_encrypt,
254 DES_ede3_cfb64_encrypt, DES_ede3_cfb_encrypt, DES_ede3_ofb64_encrypt,
255 DES_cbc_cksum, DES_quad_cksum, IDEA_encrypt, IDEA_options,
256 IDEA_ecb_encrypt, IDEA_set_encrypt_key, IDEA_set_decrypt_key,
257 IDEA_cbc_encrypt, IDEA_cfb64_encrypt, IDEA_ofb64_encrypt, RC2_set_key,
258 RC2_encrypt, RC2_decrypt, RC2_ecb_encrypt, RC2_cbc_encrypt,
259 RC2_cfb64_encrypt, RC2_ofb64_encrypt, RC4, RC4_options, RC4_set_key,
260 RC5_32_set_key, RC5_32_encrypt, RC5_32_decrypt, RC5_32_ecb_encrypt,
261 RC5_32_cbc_encrypt, RC5_32_cfb64_encrypt, RC5_32_ofb64_encrypt,
262 SEED_set_key, SEED_encrypt, SEED_decrypt, SEED_ecb_encrypt,
263 SEED_cbc_encrypt, SEED_cfb128_encrypt and SEED_ofb128_encrypt.
265 Use of these low level functions has been informally discouraged for
266 a long time. Applications should use the high level EVP APIs, e.g.
267 EVP_EncryptInit_ex, EVP_EncryptUpdate, EVP_EncryptFinal_ex, and the
268 equivalently named decrypt functions instead.
269 [Matt Caswell and Paul Dale]
271 *) Removed include/openssl/opensslconf.h.in and replaced it with
272 include/openssl/configuration.h.in, which differs in not including
273 <openssl/macros.h>. A short header include/openssl/opensslconf.h
274 was added to include both.
276 This allows internal hacks where one might need to modify the set
277 of configured macros, for example this if deprecated symbols are
278 still supposed to be available internally:
280 #include <openssl/configuration.h>
282 #undef OPENSSL_NO_DEPRECATED
283 #define OPENSSL_SUPPRESS_DEPRECATED
285 #include <openssl/macros.h>
287 This should not be used by applications that use the exported
288 symbols, as that will lead to linking errors.
291 *) Fixed an an overflow bug in the x64_64 Montgomery squaring procedure
292 used in exponentiation with 512-bit moduli. No EC algorithms are
293 affected. Analysis suggests that attacks against 2-prime RSA1024,
294 3-prime RSA1536, and DSA1024 as a result of this defect would be very
295 difficult to perform and are not believed likely. Attacks against DH512
296 are considered just feasible. However, for an attack the target would
297 have to re-use the DH512 private key, which is not recommended anyway.
298 Also applications directly using the low level API BN_mod_exp may be
299 affected if they use BN_FLG_CONSTTIME.
303 *) Most memory-debug features have been deprecated, and the functionality
304 replaced with no-ops.
307 *) Introduced a new method type and API, OSSL_SERIALIZER, to
308 represent generic serializers. An implementation is expected to
309 be able to serialize an object associated with a given name (such
310 as an algorithm name for an asymmetric key) into forms given by
311 implementation properties.
313 Serializers are primarily used from inside libcrypto, through
314 calls to functions like EVP_PKEY_print_private(),
315 PEM_write_bio_PrivateKey() and similar.
317 Serializers are specified in such a way that they can be made to
318 directly handle the provider side portion of an object, if this
319 provider side part comes from the same provider as the serializer
320 itself, but can also be made to handle objects in parametrized
321 form (as an OSSL_PARAM array of data). This allows a provider to
322 offer generic serializers as a service for any other provider.
325 *) Added a .pragma directive to the syntax of configuration files, to
326 allow varying behavior in a supported and predictable manner.
327 Currently added pragma:
331 This allows dollar signs to be a keyword character unless it's
332 followed by a opening brace or parenthesis. This is useful for
333 platforms where dollar signs are commonly used in names, such as
334 volume names and system directory names on VMS.
337 *) Added functionality to create an EVP_PKEY from user data. This
338 is effectively the same as creating a RSA, DH or DSA object and
339 then assigning them to an EVP_PKEY, but directly using algorithm
340 agnostic EVP functions. A benefit is that this should be future
341 proof for public key algorithms to come.
344 *) Change the interpretation of the '--api' configuration option to
345 mean that this is a desired API compatibility level with no
346 further meaning. The previous interpretation, that this would
347 also mean to remove all deprecated symbols up to and including
348 the given version, no requires that 'no-deprecated' is also used
349 in the configuration.
351 When building applications, the desired API compatibility level
352 can be set with the OPENSSL_API_COMPAT macro like before. For
353 API compatibility version below 3.0, the old style numerical
354 value is valid as before, such as -DOPENSSL_API_COMPAT=0x10100000L.
355 For version 3.0 and on, the value is expected to be the decimal
356 value calculated from the major and minor version like this:
358 MAJOR * 10000 + MINOR * 100
362 -DOPENSSL_API_COMPAT=30000 For 3.0
363 -DOPENSSL_API_COMPAT=30200 For 3.2
365 To hide declarations that are deprecated up to and including the
366 given API compatibility level, -DOPENSSL_NO_DEPRECATED must be
367 given when building the application as well.
370 *) Added the X509_LOOKUP_METHOD called X509_LOOKUP_store, to allow
371 access to certificate and CRL stores via URIs and OSSL_STORE
374 This adds the following functions:
377 X509_STORE_load_file()
378 X509_STORE_load_path()
379 X509_STORE_load_store()
380 SSL_add_store_cert_subjects_to_stack()
381 SSL_CTX_set_default_verify_store()
382 SSL_CTX_load_verify_file()
383 SSL_CTX_load_verify_dir()
384 SSL_CTX_load_verify_store()
386 Also, the following functions are now deprecated:
388 - X509_STORE_load_locations() (use X509_STORE_load_file(),
389 X509_STORE_load_path() or X509_STORE_load_store() instead)
390 - SSL_CTX_load_verify_locations() (use SSL_CTX_load_verify_file(),
391 SSL_CTX_load_verify_dir() or SSL_CTX_load_verify_store() instead)
394 *) Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
395 The presence of this system service is determined at run-time.
398 *) Added functionality to create an EVP_PKEY context based on data
399 for methods from providers. This takes an algorithm name and a
400 property query string and simply stores them, with the intent
401 that any operation that uses this context will use those strings
402 to fetch the needed methods implicitly, thereby making the port
403 of application written for pre-3.0 OpenSSL easier.
406 *) The undocumented function NCONF_WIN32() has been deprecated; for
407 conversion details see the HISTORY section of doc/man5/config.pod
410 *) Introduced the new functions EVP_DigestSignInit_ex() and
411 EVP_DigestVerifyInit_ex(). The macros EVP_DigestSignUpdate() and
412 EVP_DigestVerifyUpdate() have been converted to functions. See the man
413 pages for further details.
416 *) s390x assembly pack: add hardware-support for P-256, P-384, P-521,
417 X25519, X448, Ed25519 and Ed448.
420 *) Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
424 *) Deprecated the public definition of ERR_STATE as well as the function
425 ERR_get_state(). This is done in preparation of making ERR_STATE an
429 *) Added ERR functionality to give callers access to the stored function
430 names that have replaced the older function code based functions.
432 New functions are ERR_get_error_func(), ERR_peek_error_func(),
433 ERR_peek_last_error_func(), ERR_get_error_data(), ERR_peek_error_data(),
434 ERR_peek_last_error_data(), ERR_get_error_all(), ERR_peek_error_all()
435 and ERR_peek_last_error_all().
437 These functions have become deprecated: ERR_get_error_line_data(),
438 ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
439 ERR_func_error_string().
442 *) Extended testing to be verbose for failing tests only. The make variables
443 VERBOSE_FAILURE or VF can be used to enable this:
445 $ make VF=1 test # Unix
446 $ mms /macro=(VF=1) test ! OpenVMS
447 $ nmake VF=1 test # Windows
451 *) For built-in EC curves, ensure an EC_GROUP built from the curve name is
452 used even when parsing explicit parameters, when loading a serialized key
453 or calling `EC_GROUP_new_from_ecpkparameters()`/
454 `EC_GROUP_new_from_ecparameters()`.
455 This prevents bypass of security hardening and performance gains,
456 especially for curves with specialized EC_METHODs.
457 By default, if a key encoded with explicit parameters is loaded and later
458 serialized, the output is still encoded with explicit parameters, even if
459 internally a "named" EC_GROUP is used for computation.
462 *) Compute ECC cofactors if not provided during EC_GROUP construction. Before
463 this change, EC_GROUP_set_generator would accept order and/or cofactor as
464 NULL. After this change, only the cofactor parameter can be NULL. It also
465 does some minimal sanity checks on the passed order.
469 *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
470 An attack is simple, if the first CMS_recipientInfo is valid but the
471 second CMS_recipientInfo is chosen ciphertext. If the second
472 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
473 encryption key will be replaced by garbage, and the message cannot be
474 decoded, but if the RSA decryption fails, the correct encryption key is
475 used and the recipient will not notice the attack.
476 As a work around for this potential attack the length of the decrypted
477 key must be equal to the cipher default key length, in case the
478 certifiate is not given and all recipientInfo are tried out.
479 The old behaviour can be re-enabled in the CMS code by setting the
480 CMS_DEBUG_DECRYPT flag.
483 *) Early start up entropy quality from the DEVRANDOM seed source has been
484 improved for older Linux systems. The RAND subsystem will wait for
485 /dev/random to be producing output before seeding from /dev/urandom.
486 The seeded state is stored for future library initialisations using
487 a system global shared memory segment. The shared memory identifier
488 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
489 the desired value. The default identifier is 114.
492 *) Revised BN_generate_prime_ex to not avoid factors 2..17863 in p-1
493 when primes for RSA keys are computed.
494 Since we previously always generated primes == 2 (mod 3) for RSA keys,
495 the 2-prime and 3-prime RSA modules were easy to distinguish, since
496 N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
497 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
498 This avoids possible fingerprinting of newly generated RSA modules.
501 *) Correct the extended master secret constant on EBCDIC systems. Without this
502 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
503 negotiate EMS will fail. Unfortunately this also means that TLS connections
504 between EBCDIC systems with this fix, and EBCDIC systems without this
505 fix will fail if they negotiate EMS.
508 *) Changed the library initialisation so that the config file is now loaded
509 by default. This was already the case for libssl. It now occurs for both
510 libcrypto and libssl. Use the OPENSSL_INIT_NO_LOAD_CONFIG option to
511 OPENSSL_init_crypto() to suppress automatic loading of a config file.
514 *) Introduced new error raising macros, ERR_raise() and ERR_raise_data(),
515 where the former acts as a replacement for ERR_put_error(), and the
516 latter replaces the combination ERR_put_error()+ERR_add_error_data().
517 ERR_raise_data() adds more flexibility by taking a format string and
518 an arbitrary number of arguments following it, to be processed with
522 *) Introduced a new function, OSSL_PROVIDER_available(), which can be used
523 to check if a named provider is loaded and available. When called, it
524 will also activate all fallback providers if such are still present.
527 *) Enforce a minimum DH modulus size of 512 bits.
530 *) Changed DH parameters to generate the order q subgroup instead of 2q.
531 Previously generated DH parameters are still accepted by DH_check
532 but DH_generate_key works around that by clearing bit 0 of the
533 private key for those. This avoids leaking bit 0 of the private key.
536 *) Significantly reduce secure memory usage by the randomness pools.
539 *) {CRYPTO,OPENSSL}_mem_debug_{push,pop} are now no-ops and have been
543 *) A new type, EVP_KEYEXCH, has been introduced to represent key exchange
544 algorithms. An implementation of a key exchange algorithm can be obtained
545 by using the function EVP_KEYEXCH_fetch(). An EVP_KEYEXCH algorithm can be
546 used in a call to EVP_PKEY_derive_init_ex() which works in a similar way to
547 the older EVP_PKEY_derive_init() function. See the man pages for the new
548 functions for further details.
551 *) The EVP_PKEY_CTX_set_dh_pad() macro has now been converted to a function.
554 *) Removed the function names from error messages and deprecated the
557 *) Removed NextStep support and the macro OPENSSL_UNISTD
560 *) Removed DES_check_key. Also removed OPENSSL_IMPLEMENT_GLOBAL,
561 OPENSSL_GLOBAL_REF, OPENSSL_DECLARE_GLOBAL.
562 Also removed "export var as function" capability; we do not export
563 variables, only functions.
566 *) RC5_32_set_key has been changed to return an int type, with 0 indicating
567 an error and 1 indicating success. In previous versions of OpenSSL this
568 was a void type. If a key was set longer than the maximum possible this
572 *) Support SM2 signing and verification schemes with X509 certificate.
575 *) Use SHA256 as the default digest for TS query in the ts app.
578 *) Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
579 This checks that the salt length is at least 128 bits, the derived key
580 length is at least 112 bits, and that the iteration count is at least 1000.
581 For backwards compatibility these checks are disabled by default in the
582 default provider, but are enabled by default in the fips provider.
583 To enable or disable these checks use the control
584 EVP_KDF_CTRL_SET_PBKDF2_PKCS5_MODE.
587 *) Default cipher lists/suites are now available via a function, the
588 #defines are deprecated.
591 *) Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
592 VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
593 for Windows Store apps easier. Also, the "no-uplink" option has been added.
596 *) Join the directories crypto/x509 and crypto/x509v3
599 *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
600 This changes the size when using the genpkey app when no size is given. It
601 fixes an omission in earlier changes that changed all RSA, DSA and DH
602 generation apps to use 2048 bits by default.
605 *) Added command 'openssl kdf' that uses the EVP_KDF API.
608 *) Added command 'openssl mac' that uses the EVP_MAC API.
611 *) Added OPENSSL_info() to get diverse built-in OpenSSL data, such
612 as default directories. Also added the command 'openssl info'
613 for scripting purposes.
616 *) The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have been
617 deprecated. These undocumented functions were never integrated into the EVP
618 layer and implement the AES Infinite Garble Extension (IGE) mode and AES
619 Bi-directional IGE mode. These modes were never formally standardised and
620 usage of these functions is believed to be very small. In particular
621 AES_bi_ige_encrypt() has a known bug. It accepts 2 AES keys, but only one
622 is ever used. The security implications are believed to be minimal, but
623 this issue was never fixed for backwards compatibility reasons. New code
624 should not use these modes.
627 *) Add prediction resistance to the DRBG reseeding process.
630 *) Limit the number of blocks in a data unit for AES-XTS to 2^20 as
631 mandated by IEEE Std 1619-2018.
634 *) Added newline escaping functionality to a filename when using openssl dgst.
635 This output format is to replicate the output format found in the '*sum'
636 checksum programs. This aims to preserve backward compatibility.
637 [Matt Eaton, Richard Levitte, and Paul Dale]
639 *) Removed the heartbeat message in DTLS feature, as it has very
640 little usage and doesn't seem to fulfill a valuable purpose.
641 The configuration option is now deprecated.
644 *) Changed the output of 'openssl {digestname} < file' to display the
645 digest name in its output.
648 *) Added a new generic trace API which provides support for enabling
649 instrumentation through trace output. This feature is mainly intended
650 as an aid for developers and is disabled by default. To utilize it,
651 OpenSSL needs to be configured with the `enable-trace` option.
653 If the tracing API is enabled, the application can activate trace output
654 by registering BIOs as trace channels for a number of tracing and debugging
657 The 'openssl' application has been expanded to enable any of the types
658 available via environment variables defined by the user, and serves as
659 one possible example on how to use this functionality.
660 [Richard Levitte & Matthias St. Pierre]
662 *) Added build tests for C++. These are generated files that only do one
663 thing, to include one public OpenSSL head file each. This tests that
664 the public header files can be usefully included in a C++ application.
666 This test isn't enabled by default. It can be enabled with the option
667 'enable-buildtest-c++'.
670 *) Add Single Step KDF (EVP_KDF_SS) to EVP_KDF.
673 *) Add KMAC to EVP_MAC.
676 *) Added property based algorithm implementation selection framework to
680 *) Added SCA hardening for modular field inversion in EC_GROUP through
681 a new dedicated field_inv() pointer in EC_METHOD.
682 This also addresses a leakage affecting conversions from projective
683 to affine coordinates.
684 [Billy Bob Brumley, Nicola Tuveri]
686 *) Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
687 implementations. This includes an EVP_PKEY to EVP_KDF bridge for
688 those algorithms that were already supported through the EVP_PKEY API
689 (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
690 and scrypt are now wrappers that call EVP_KDF.
693 *) Build devcrypto engine as a dynamic engine.
696 *) Add keyed BLAKE2 to EVP_MAC.
699 *) Fix a bug in the computation of the endpoint-pair shared secret used
700 by DTLS over SCTP. This breaks interoperability with older versions
701 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
702 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
703 interoperability with such broken implementations. However, enabling
704 this switch breaks interoperability with correct implementations.
706 *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
707 re-used X509_PUBKEY object if the second PUBKEY is malformed.
710 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
713 *) Change the license to the Apache License v2.0.
716 *) Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
718 o Major releases (indicated by incrementing the MAJOR release number)
719 may introduce incompatible API/ABI changes.
720 o Minor releases (indicated by incrementing the MINOR release number)
721 may introduce new features but retain API/ABI compatibility.
722 o Patch releases (indicated by incrementing the PATCH number)
723 are intended for bug fixes and other improvements of existing
724 features only (like improving performance or adding documentation)
725 and retain API/ABI compatibility.
728 *) Add support for RFC5297 SIV mode (siv128), including AES-SIV.
731 *) Remove the 'dist' target and add a tarball building script. The
732 'dist' target has fallen out of use, and it shouldn't be
733 necessary to configure just to create a source distribution.
736 *) Recreate the OS390-Unix config target. It no longer relies on a
737 special script like it did for OpenSSL pre-1.1.0.
740 *) Instead of having the source directories listed in Configure, add
741 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
745 *) Add GMAC to EVP_MAC.
748 *) Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
751 *) Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
752 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
753 to facilitate the continued use of MACs through raw private keys in
754 functionality such as EVP_DigestSign* and EVP_DigestVerify*.
757 *) Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
758 should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
761 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
762 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
763 are retained for backwards compatibility.
766 *) AES-XTS mode now enforces that its two keys are different to mitigate
767 the attacked described in "Efficient Instantiations of Tweakable
768 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
769 Details of this attack can be obtained from:
770 http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf
773 *) Rename the object files, i.e. give them other names than in previous
774 versions. Their names now include the name of the final product, as
775 well as its type mnemonic (bin, lib, shlib).
778 *) Added new option for 'openssl list', '-objects', which will display the
779 list of built in objects, i.e. OIDs with names.
782 *) Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
783 improves application performance by removing data copies and providing
784 applications with zero-copy system calls such as sendfile and splice.
787 Changes between 1.1.1a and 1.1.1b [xx XXX xxxx]
789 *) Change the info callback signals for the start and end of a post-handshake
790 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
791 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
792 confused by this and assume that a TLSv1.2 renegotiation has started. This
793 can break KeyUpdate handling. Instead we no longer signal the start and end
794 of a post handshake message exchange (although the messages themselves are
795 still signalled). This could break some applications that were expecting
796 the old signals. However without this KeyUpdate is not usable for many
800 Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
802 *) Timing vulnerability in DSA signature generation
804 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
805 timing side channel attack. An attacker could use variations in the signing
806 algorithm to recover the private key.
808 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
812 *) Timing vulnerability in ECDSA signature generation
814 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
815 timing side channel attack. An attacker could use variations in the signing
816 algorithm to recover the private key.
818 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
822 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
823 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
824 of two gigabytes and the error handling improved.
826 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
827 categorized as a normal bug, not a security issue, because the DRBG reseeds
828 automatically and is fully functional even without additional randomness
829 provided by the application.
831 Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
833 *) Add a new ClientHello callback. Provides a callback interface that gives
834 the application the ability to adjust the nascent SSL object at the
835 earliest stage of ClientHello processing, immediately after extensions have
836 been collected but before they have been processed. In particular, this
837 callback can adjust the supported TLS versions in response to the contents
841 *) Add SM2 base algorithm support.
844 *) s390x assembly pack: add (improved) hardware-support for the following
845 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
846 aes-cfb/cfb8, aes-ecb.
849 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
850 parameter is no longer accepted, as it leads to a corrupt table. NULL
851 pem_str is reserved for alias entries only.
854 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
855 step for prime curves. The new implementation is based on formulae from
856 differential addition-and-doubling in homogeneous projective coordinates
857 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
858 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
859 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
860 to work in projective coordinates.
861 [Billy Bob Brumley, Nicola Tuveri]
863 *) Change generating and checking of primes so that the error rate of not
864 being prime depends on the intended use based on the size of the input.
865 For larger primes this will result in more rounds of Miller-Rabin.
866 The maximal error rate for primes with more than 1080 bits is lowered
868 [Kurt Roeckx, Annie Yousar]
870 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
873 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
874 moving between systems, and to avoid confusion when a Windows build is
875 done with mingw vs with MSVC. For POSIX installs, there's still a
876 symlink or copy named 'tsget' to avoid that confusion as well.
879 *) Revert blinding in ECDSA sign and instead make problematic addition
880 length-invariant. Switch even to fixed-length Montgomery multiplication.
883 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
884 step for binary curves. The new implementation is based on formulae from
885 differential addition-and-doubling in mixed Lopez-Dahab projective
886 coordinates, modified to independently blind the operands.
887 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
889 *) Add a scaffold to optionally enhance the Montgomery ladder implementation
890 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
891 EC_METHODs to implement their own specialized "ladder step", to take
892 advantage of more favorable coordinate systems or more efficient
893 differential addition-and-doubling algorithms.
894 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
896 *) Modified the random device based seed sources to keep the relevant
897 file descriptors open rather than reopening them on each access.
898 This allows such sources to operate in a chroot() jail without
899 the associated device nodes being available. This behaviour can be
900 controlled using RAND_keep_random_devices_open().
903 *) Numerous side-channel attack mitigations have been applied. This may have
904 performance impacts for some algorithms for the benefit of improved
905 security. Specific changes are noted in this change log by their respective
909 *) AIX shared library support overhaul. Switch to AIX "natural" way of
910 handling shared libraries, which means collecting shared objects of
911 different versions and bitnesses in one common archive. This allows to
912 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
913 doesn't affect the way 3rd party applications are linked, only how
914 multi-version installation is managed.
917 *) Make ec_group_do_inverse_ord() more robust and available to other
918 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
919 mitigations are applied to the fallback BN_mod_inverse().
920 When using this function rather than BN_mod_inverse() directly, new
921 EC cryptosystem implementations are then safer-by-default.
924 *) Add coordinate blinding for EC_POINT and implement projective
925 coordinate blinding for generic prime curves as a countermeasure to
926 chosen point SCA attacks.
927 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
929 *) Add blinding to ECDSA and DSA signatures to protect against side channel
930 attacks discovered by Keegan Ryan (NCC Group).
933 *) Enforce checking in the pkeyutl command line app to ensure that the input
934 length does not exceed the maximum supported digest length when performing
935 a sign, verify or verifyrecover operation.
938 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
939 I/O in combination with something like select() or poll() will hang. This
940 can be turned off again using SSL_CTX_clear_mode().
941 Many applications do not properly handle non-application data records, and
942 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
943 around the problems in those applications, but can also break some.
944 It's recommended to read the manpages about SSL_read(), SSL_write(),
945 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
946 SSL_CTX_set_read_ahead() again.
949 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
950 now allow empty (zero character) pass phrases.
953 *) Apply blinding to binary field modular inversion and remove patent
954 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
957 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
958 binary and prime elliptic curves.
961 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
962 constant time fixed point multiplication.
965 *) Revise elliptic curve scalar multiplication with timing attack
966 defenses: ec_wNAF_mul redirects to a constant time implementation
967 when computing fixed point and variable point multiplication (which
968 in OpenSSL are mostly used with secret scalars in keygen, sign,
969 ECDH derive operations).
970 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida GarcÃa,
973 *) Updated CONTRIBUTING
976 *) Updated DRBG / RAND to request nonce and additional low entropy
977 randomness from the system.
978 [Matthias St. Pierre]
980 *) Updated 'openssl rehash' to use OpenSSL consistent default.
983 *) Moved the load of the ssl_conf module to libcrypto, which helps
984 loading engines that libssl uses before libssl is initialised.
987 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
990 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
991 [Ingo Schwarze, Rich Salz]
993 *) Added output of accepting IP address and port for 'openssl s_server'
996 *) Added a new API for TLSv1.3 ciphersuites:
997 SSL_CTX_set_ciphersuites()
998 SSL_set_ciphersuites()
1001 *) Memory allocation failures consistently add an error to the error
1005 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
1006 in libcrypto when run as setuid/setgid.
1009 *) Load any config file by default when libssl is used.
1012 *) Added new public header file <openssl/rand_drbg.h> and documentation
1013 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
1014 [Matthias St. Pierre]
1016 *) QNX support removed (cannot find contributors to get their approval
1017 for the license change).
1020 *) TLSv1.3 replay protection for early data has been implemented. See the
1021 SSL_read_early_data() man page for further details.
1024 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
1025 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
1026 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
1027 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
1028 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
1029 configuration has been separated out. See the ciphers man page or the
1030 SSL_CTX_set_ciphersuites() man page for more information.
1033 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
1034 in responder mode now supports the new "-multi" option, which
1035 spawns the specified number of child processes to handle OCSP
1036 requests. The "-timeout" option now also limits the OCSP
1037 responder's patience to wait to receive the full client request
1038 on a newly accepted connection. Child processes are respawned
1039 as needed, and the CA index file is automatically reloaded
1040 when changed. This makes it possible to run the "ocsp" responder
1041 as a long-running service, making the OpenSSL CA somewhat more
1042 feature-complete. In this mode, most diagnostic messages logged
1043 after entering the event loop are logged via syslog(3) rather than
1047 *) Added support for X448 and Ed448. Heavily based on original work by
1051 *) Extend OSSL_STORE with capabilities to search and to narrow the set of
1052 objects loaded. This adds the functions OSSL_STORE_expect() and
1053 OSSL_STORE_find() as well as needed tools to construct searches and
1054 get the search data out of them.
1057 *) Support for TLSv1.3 added. Note that users upgrading from an earlier
1058 version of OpenSSL should review their configuration settings to ensure
1059 that they are still appropriate for TLSv1.3. For further information see:
1060 https://wiki.openssl.org/index.php/TLS1.3
1063 *) Grand redesign of the OpenSSL random generator
1065 The default RAND method now utilizes an AES-CTR DRBG according to
1066 NIST standard SP 800-90Ar1. The new random generator is essentially
1067 a port of the default random generator from the OpenSSL FIPS 2.0
1068 object module. It is a hybrid deterministic random bit generator
1069 using an AES-CTR bit stream and which seeds and reseeds itself
1070 automatically using trusted system entropy sources.
1072 Some of its new features are:
1073 o Support for multiple DRBG instances with seed chaining.
1074 o The default RAND method makes use of a DRBG.
1075 o There is a public and private DRBG instance.
1076 o The DRBG instances are fork-safe.
1077 o Keep all global DRBG instances on the secure heap if it is enabled.
1078 o The public and private DRBG instance are per thread for lock free
1080 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
1082 *) Changed Configure so it only says what it does and doesn't dump
1083 so much data. Instead, ./configdata.pm should be used as a script
1084 to display all sorts of configuration data.
1087 *) Added processing of "make variables" to Configure.
1090 *) Added SHA512/224 and SHA512/256 algorithm support.
1093 *) The last traces of Netware support, first removed in 1.1.0, have
1097 *) Get rid of Makefile.shared, and in the process, make the processing
1098 of certain files (rc.obj, or the .def/.map/.opt files produced from
1099 the ordinal files) more visible and hopefully easier to trace and
1100 debug (or make silent).
1103 *) Make it possible to have environment variable assignments as
1104 arguments to config / Configure.
1107 *) Add multi-prime RSA (RFC 8017) support.
1110 *) Add SM3 implemented according to GB/T 32905-2016
1111 [ Jack Lloyd <jack.lloyd@ribose.com>,
1112 Ronald Tse <ronald.tse@ribose.com>,
1113 Erick Borsboom <erick.borsboom@ribose.com> ]
1115 *) Add 'Maximum Fragment Length' TLS extension negotiation and support
1116 as documented in RFC6066.
1117 Based on a patch from Tomasz Moń
1118 [Filipe Raimundo da Silva]
1120 *) Add SM4 implemented according to GB/T 32907-2016.
1121 [ Jack Lloyd <jack.lloyd@ribose.com>,
1122 Ronald Tse <ronald.tse@ribose.com>,
1123 Erick Borsboom <erick.borsboom@ribose.com> ]
1125 *) Reimplement -newreq-nodes and ERR_error_string_n; the
1126 original author does not agree with the license change.
1129 *) Add ARIA AEAD TLS support.
1132 *) Some macro definitions to support VS6 have been removed. Visual
1133 Studio 6 has not worked since 1.1.0
1136 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
1137 without clearing the errors.
1140 *) Add "atfork" functions. If building on a system that without
1141 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
1142 requirements. The RAND facility now uses/requires this.
1148 *) The UI API becomes a permanent and integral part of libcrypto, i.e.
1149 not possible to disable entirely. However, it's still possible to
1150 disable the console reading UI method, UI_OpenSSL() (use UI_null()
1153 To disable, configure with 'no-ui-console'. 'no-ui' is still
1154 possible to use as an alias. Check at compile time with the
1155 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
1156 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
1159 *) Add a STORE module, which implements a uniform and URI based reader of
1160 stores that can contain keys, certificates, CRLs and numerous other
1161 objects. The main API is loosely based on a few stdio functions,
1162 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
1163 OSSL_STORE_error and OSSL_STORE_close.
1164 The implementation uses backends called "loaders" to implement arbitrary
1165 URI schemes. There is one built in "loader" for the 'file' scheme.
1168 *) Add devcrypto engine. This has been implemented against cryptodev-linux,
1169 then adjusted to work on FreeBSD 8.4 as well.
1170 Enable by configuring with 'enable-devcryptoeng'. This is done by default
1171 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
1174 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
1175 util/mkerr.pl, which is adapted to allow those prefixes, leading to
1176 error code calls like this:
1178 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
1180 With this change, we claim the namespaces OSSL and OPENSSL in a manner
1181 that can be encoded in C. For the foreseeable future, this will only
1183 [Richard Levitte and Tim Hudson]
1185 *) Removed BSD cryptodev engine.
1188 *) Add a build target 'build_all_generated', to build all generated files
1189 and only that. This can be used to prepare everything that requires
1190 things like perl for a system that lacks perl and then move everything
1191 to that system and do the rest of the build there.
1194 *) In the UI interface, make it possible to duplicate the user data. This
1195 can be used by engines that need to retain the data for a longer time
1196 than just the call where this user data is passed.
1199 *) Ignore the '-named_curve auto' value for compatibility of applications
1201 [Tomas Mraz <tmraz@fedoraproject.org>]
1203 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
1204 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
1205 alerts across multiple records (some of which could be empty). In practice
1206 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
1207 prohibits this altogether and other libraries (BoringSSL, NSS) do not
1208 support this at all. Supporting it adds significant complexity to the
1209 record layer, and its removal is unlikely to cause interoperability
1213 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
1214 with Z. These are meant to replace LONG and ZLONG and to be size safe.
1215 The use of LONG and ZLONG is discouraged and scheduled for deprecation
1219 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
1220 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
1221 [Richard Levitte, Andy Polyakov]
1223 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
1227 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
1228 platform rather than 'mingw'.
1231 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
1232 success if they are asked to add an object which already exists
1233 in the store. This change cascades to other functions which load
1234 certificates and CRLs.
1237 *) x86_64 assembly pack: annotate code with DWARF CFI directives to
1238 facilitate stack unwinding even from assembly subroutines.
1241 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
1242 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
1245 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
1246 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
1247 which is the minimum version we support.
1250 *) Certificate time validation (X509_cmp_time) enforces stricter
1251 compliance with RFC 5280. Fractional seconds and timezone offsets
1252 are no longer allowed.
1255 *) Add support for ARIA
1258 *) s_client will now send the Server Name Indication (SNI) extension by
1259 default unless the new "-noservername" option is used. The server name is
1260 based on the host provided to the "-connect" option unless overridden by
1261 using "-servername".
1264 *) Add support for SipHash
1267 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
1268 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
1269 prevent issues where no progress is being made and the peer continually
1270 sends unrecognised record types, using up resources processing them.
1273 *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
1274 using the algorithm defined in
1275 https://www.akkadia.org/drepper/SHA-crypt.txt
1278 *) Heartbeat support has been removed; the ABI is changed for now.
1279 [Richard Levitte, Rich Salz]
1281 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
1284 *) The RSA "null" method, which was partially supported to avoid patent
1285 issues, has been replaced to always returns NULL.
1289 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
1291 *) Client DoS due to large DH parameter
1293 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
1294 malicious server can send a very large prime value to the client. This will
1295 cause the client to spend an unreasonably long period of time generating a
1296 key for this prime resulting in a hang until the client has finished. This
1297 could be exploited in a Denial Of Service attack.
1299 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
1303 *) Cache timing vulnerability in RSA Key Generation
1305 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
1306 a cache timing side channel attack. An attacker with sufficient access to
1307 mount cache timing attacks during the RSA key generation process could
1308 recover the private key.
1310 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
1311 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
1315 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
1316 parameter is no longer accepted, as it leads to a corrupt table. NULL
1317 pem_str is reserved for alias entries only.
1320 *) Revert blinding in ECDSA sign and instead make problematic addition
1321 length-invariant. Switch even to fixed-length Montgomery multiplication.
1324 *) Change generating and checking of primes so that the error rate of not
1325 being prime depends on the intended use based on the size of the input.
1326 For larger primes this will result in more rounds of Miller-Rabin.
1327 The maximal error rate for primes with more than 1080 bits is lowered
1329 [Kurt Roeckx, Annie Yousar]
1331 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
1334 *) Add blinding to ECDSA and DSA signatures to protect against side channel
1335 attacks discovered by Keegan Ryan (NCC Group).
1338 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
1339 now allow empty (zero character) pass phrases.
1342 *) Certificate time validation (X509_cmp_time) enforces stricter
1343 compliance with RFC 5280. Fractional seconds and timezone offsets
1344 are no longer allowed.
1347 *) Fixed a text canonicalisation bug in CMS
1349 Where a CMS detached signature is used with text content the text goes
1350 through a canonicalisation process first prior to signing or verifying a
1351 signature. This process strips trailing space at the end of lines, converts
1352 line terminators to CRLF and removes additional trailing line terminators
1353 at the end of a file. A bug in the canonicalisation process meant that
1354 some characters, such as form-feed, were incorrectly treated as whitespace
1355 and removed. This is contrary to the specification (RFC5485). This fix
1356 could mean that detached text data signed with an earlier version of
1357 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
1358 signed with a fixed OpenSSL may fail to verify with an earlier version of
1359 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
1360 and use the "-binary" flag (for the "cms" command line application) or set
1361 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
1364 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
1366 *) Constructed ASN.1 types with a recursive definition could exceed the stack
1368 Constructed ASN.1 types with a recursive definition (such as can be found
1369 in PKCS7) could eventually exceed the stack given malicious input with
1370 excessive recursion. This could result in a Denial Of Service attack. There
1371 are no such structures used within SSL/TLS that come from untrusted sources
1372 so this is considered safe.
1374 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
1379 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
1381 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
1382 effectively reduced to only comparing the least significant bit of each
1383 byte. This allows an attacker to forge messages that would be considered as
1384 authenticated in an amount of tries lower than that guaranteed by the
1385 security claims of the scheme. The module can only be compiled by the
1386 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
1388 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
1393 *) Add a build target 'build_all_generated', to build all generated files
1394 and only that. This can be used to prepare everything that requires
1395 things like perl for a system that lacks perl and then move everything
1396 to that system and do the rest of the build there.
1399 *) Backport SSL_OP_NO_RENGOTIATION
1401 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
1402 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
1403 changes this is no longer possible in 1.1.0. Therefore the new
1404 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
1405 1.1.0 to provide equivalent functionality.
1407 Note that if an application built against 1.1.0h headers (or above) is run
1408 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
1409 accepted but nothing will happen, i.e. renegotiation will not be prevented.
1412 *) Removed the OS390-Unix config target. It relied on a script that doesn't
1416 *) rsaz_1024_mul_avx2 overflow bug on x86_64
1418 There is an overflow bug in the AVX2 Montgomery multiplication procedure
1419 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
1420 Analysis suggests that attacks against RSA and DSA as a result of this
1421 defect would be very difficult to perform and are not believed likely.
1422 Attacks against DH1024 are considered just feasible, because most of the
1423 work necessary to deduce information about a private key may be performed
1424 offline. The amount of resources required for such an attack would be
1425 significant. However, for an attack on TLS to be meaningful, the server
1426 would have to share the DH1024 private key among multiple clients, which is
1427 no longer an option since CVE-2016-0701.
1429 This only affects processors that support the AVX2 but not ADX extensions
1430 like Intel Haswell (4th generation).
1432 This issue was reported to OpenSSL by David Benjamin (Google). The issue
1433 was originally found via the OSS-Fuzz project.
1437 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
1439 *) bn_sqrx8x_internal carry bug on x86_64
1441 There is a carry propagating bug in the x86_64 Montgomery squaring
1442 procedure. No EC algorithms are affected. Analysis suggests that attacks
1443 against RSA and DSA as a result of this defect would be very difficult to
1444 perform and are not believed likely. Attacks against DH are considered just
1445 feasible (although very difficult) because most of the work necessary to
1446 deduce information about a private key may be performed offline. The amount
1447 of resources required for such an attack would be very significant and
1448 likely only accessible to a limited number of attackers. An attacker would
1449 additionally need online access to an unpatched system using the target
1450 private key in a scenario with persistent DH parameters and a private
1451 key that is shared between multiple clients.
1453 This only affects processors that support the BMI1, BMI2 and ADX extensions
1454 like Intel Broadwell (5th generation) and later or AMD Ryzen.
1456 This issue was reported to OpenSSL by the OSS-Fuzz project.
1460 *) Malformed X.509 IPAddressFamily could cause OOB read
1462 If an X.509 certificate has a malformed IPAddressFamily extension,
1463 OpenSSL could do a one-byte buffer overread. The most likely result
1464 would be an erroneous display of the certificate in text format.
1466 This issue was reported to OpenSSL by the OSS-Fuzz project.
1470 Changes between 1.1.0e and 1.1.0f [25 May 2017]
1472 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
1473 platform rather than 'mingw'.
1476 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
1477 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
1478 which is the minimum version we support.
1481 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
1483 *) Encrypt-Then-Mac renegotiation crash
1485 During a renegotiation handshake if the Encrypt-Then-Mac extension is
1486 negotiated where it was not in the original handshake (or vice-versa) then
1487 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
1488 and servers are affected.
1490 This issue was reported to OpenSSL by Joe Orton (Red Hat).
1494 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
1496 *) Truncated packet could crash via OOB read
1498 If one side of an SSL/TLS path is running on a 32-bit host and a specific
1499 cipher is being used, then a truncated packet can cause that host to
1500 perform an out-of-bounds read, usually resulting in a crash.
1502 This issue was reported to OpenSSL by Robert Święcki of Google.
1506 *) Bad (EC)DHE parameters cause a client crash
1508 If a malicious server supplies bad parameters for a DHE or ECDHE key
1509 exchange then this can result in the client attempting to dereference a
1510 NULL pointer leading to a client crash. This could be exploited in a Denial
1513 This issue was reported to OpenSSL by Guido Vranken.
1517 *) BN_mod_exp may produce incorrect results on x86_64
1519 There is a carry propagating bug in the x86_64 Montgomery squaring
1520 procedure. No EC algorithms are affected. Analysis suggests that attacks
1521 against RSA and DSA as a result of this defect would be very difficult to
1522 perform and are not believed likely. Attacks against DH are considered just
1523 feasible (although very difficult) because most of the work necessary to
1524 deduce information about a private key may be performed offline. The amount
1525 of resources required for such an attack would be very significant and
1526 likely only accessible to a limited number of attackers. An attacker would
1527 additionally need online access to an unpatched system using the target
1528 private key in a scenario with persistent DH parameters and a private
1529 key that is shared between multiple clients. For example this can occur by
1530 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
1531 similar to CVE-2015-3193 but must be treated as a separate problem.
1533 This issue was reported to OpenSSL by the OSS-Fuzz project.
1537 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
1539 *) ChaCha20/Poly1305 heap-buffer-overflow
1541 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
1542 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
1543 crash. This issue is not considered to be exploitable beyond a DoS.
1545 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
1549 *) CMS Null dereference
1551 Applications parsing invalid CMS structures can crash with a NULL pointer
1552 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
1553 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
1554 structure callback if an attempt is made to free certain invalid encodings.
1555 Only CHOICE structures using a callback which do not handle NULL value are
1558 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
1562 *) Montgomery multiplication may produce incorrect results
1564 There is a carry propagating bug in the Broadwell-specific Montgomery
1565 multiplication procedure that handles input lengths divisible by, but
1566 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
1567 and DH private keys are impossible. This is because the subroutine in
1568 question is not used in operations with the private key itself and an input
1569 of the attacker's direct choice. Otherwise the bug can manifest itself as
1570 transient authentication and key negotiation failures or reproducible
1571 erroneous outcome of public-key operations with specially crafted input.
1572 Among EC algorithms only Brainpool P-512 curves are affected and one
1573 presumably can attack ECDH key negotiation. Impact was not analyzed in
1574 detail, because pre-requisites for attack are considered unlikely. Namely
1575 multiple clients have to choose the curve in question and the server has to
1576 share the private key among them, neither of which is default behaviour.
1577 Even then only clients that chose the curve will be affected.
1579 This issue was publicly reported as transient failures and was not
1580 initially recognized as a security issue. Thanks to Richard Morgan for
1581 providing reproducible case.
1585 *) Removed automatic addition of RPATH in shared libraries and executables,
1586 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
1589 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
1591 *) Fix Use After Free for large message sizes
1593 The patch applied to address CVE-2016-6307 resulted in an issue where if a
1594 message larger than approx 16k is received then the underlying buffer to
1595 store the incoming message is reallocated and moved. Unfortunately a
1596 dangling pointer to the old location is left which results in an attempt to
1597 write to the previously freed location. This is likely to result in a
1598 crash, however it could potentially lead to execution of arbitrary code.
1600 This issue only affects OpenSSL 1.1.0a.
1602 This issue was reported to OpenSSL by Robert Święcki.
1606 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
1608 *) OCSP Status Request extension unbounded memory growth
1610 A malicious client can send an excessively large OCSP Status Request
1611 extension. If that client continually requests renegotiation, sending a
1612 large OCSP Status Request extension each time, then there will be unbounded
1613 memory growth on the server. This will eventually lead to a Denial Of
1614 Service attack through memory exhaustion. Servers with a default
1615 configuration are vulnerable even if they do not support OCSP. Builds using
1616 the "no-ocsp" build time option are not affected.
1618 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1622 *) SSL_peek() hang on empty record
1624 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
1625 sends an empty record. This could be exploited by a malicious peer in a
1626 Denial Of Service attack.
1628 This issue was reported to OpenSSL by Alex Gaynor.
1632 *) Excessive allocation of memory in tls_get_message_header() and
1633 dtls1_preprocess_fragment()
1635 A (D)TLS message includes 3 bytes for its length in the header for the
1636 message. This would allow for messages up to 16Mb in length. Messages of
1637 this length are excessive and OpenSSL includes a check to ensure that a
1638 peer is sending reasonably sized messages in order to avoid too much memory
1639 being consumed to service a connection. A flaw in the logic of version
1640 1.1.0 means that memory for the message is allocated too early, prior to
1641 the excessive message length check. Due to way memory is allocated in
1642 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
1643 to service a connection. This could lead to a Denial of Service through
1644 memory exhaustion. However, the excessive message length check still takes
1645 place, and this would cause the connection to immediately fail. Assuming
1646 that the application calls SSL_free() on the failed connection in a timely
1647 manner then the 21Mb of allocated memory will then be immediately freed
1648 again. Therefore the excessive memory allocation will be transitory in
1649 nature. This then means that there is only a security impact if:
1651 1) The application does not call SSL_free() in a timely manner in the event
1652 that the connection fails
1654 2) The application is working in a constrained environment where there is
1655 very little free memory
1657 3) The attacker initiates multiple connection attempts such that there are
1658 multiple connections in a state where memory has been allocated for the
1659 connection; SSL_free() has not yet been called; and there is insufficient
1660 memory to service the multiple requests.
1662 Except in the instance of (1) above any Denial Of Service is likely to be
1663 transitory because as soon as the connection fails the memory is
1664 subsequently freed again in the SSL_free() call. However there is an
1665 increased risk during this period of application crashes due to the lack of
1666 memory - which would then mean a more serious Denial of Service.
1668 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1669 (CVE-2016-6307 and CVE-2016-6308)
1672 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
1673 had to be removed. Primary reason is that vendor assembler can't
1674 assemble our modules with -KPIC flag. As result it, assembly
1675 support, was not even available as option. But its lack means
1676 lack of side-channel resistant code, which is incompatible with
1677 security by todays standards. Fortunately gcc is readily available
1678 prepackaged option, which we firmly point at...
1681 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
1683 *) Windows command-line tool supports UTF-8 opt-in option for arguments
1684 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
1685 (to any value) allows Windows user to access PKCS#12 file generated
1686 with Windows CryptoAPI and protected with non-ASCII password, as well
1687 as files generated under UTF-8 locale on Linux also protected with
1691 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
1692 have been disabled by default and removed from DEFAULT, just like RC4.
1693 See the RC4 item below to re-enable both.
1696 *) The method for finding the storage location for the Windows RAND seed file
1697 has changed. First we check %RANDFILE%. If that is not set then we check
1698 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
1699 all else fails we fall back to C:\.
1702 *) The EVP_EncryptUpdate() function has had its return type changed from void
1703 to int. A return of 0 indicates and error while a return of 1 indicates
1707 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
1708 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
1709 off the constant time implementation for RSA, DSA and DH have been made
1710 no-ops and deprecated.
1713 *) Windows RAND implementation was simplified to only get entropy by
1714 calling CryptGenRandom(). Various other RAND-related tickets
1716 [Joseph Wylie Yandle, Rich Salz]
1718 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
1719 and OPENSSL_LH_, respectively. The old names are available
1720 with API compatibility. They new names are now completely documented.
1723 *) Unify TYPE_up_ref(obj) methods signature.
1724 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
1725 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
1726 int (instead of void) like all others TYPE_up_ref() methods.
1727 So now these methods also check the return value of CRYPTO_atomic_add(),
1728 and the validity of object reference counter.
1729 [fdasilvayy@gmail.com]
1731 *) With Windows Visual Studio builds, the .pdb files are installed
1732 alongside the installed libraries and executables. For a static
1733 library installation, ossl_static.pdb is the associate compiler
1734 generated .pdb file to be used when linking programs.
1737 *) Remove openssl.spec. Packaging files belong with the packagers.
1740 *) Automatic Darwin/OSX configuration has had a refresh, it will now
1741 recognise x86_64 architectures automatically. You can still decide
1742 to build for a different bitness with the environment variable
1743 KERNEL_BITS (can be 32 or 64), for example:
1745 KERNEL_BITS=32 ./config
1749 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
1750 256 bit AES and HMAC with SHA256.
1753 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
1756 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
1759 *) To enable users to have their own config files and build file templates,
1760 Configure looks in the directory indicated by the environment variable
1761 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
1762 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
1763 name and is used as is.
1766 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
1767 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
1768 X509_CERT_FILE_CTX was removed.
1771 *) "shared" builds are now the default. To create only static libraries use
1772 the "no-shared" Configure option.
1775 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
1776 All of these option have not worked for some while and are fundamental
1780 *) Make various cleanup routines no-ops and mark them as deprecated. Most
1781 global cleanup functions are no longer required because they are handled
1782 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
1783 Explicitly de-initing can cause problems (e.g. where a library that uses
1784 OpenSSL de-inits, but an application is still using it). The affected
1785 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
1786 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
1787 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
1788 COMP_zlib_cleanup().
1791 *) --strict-warnings no longer enables runtime debugging options
1792 such as REF_DEBUG. Instead, debug options are automatically
1793 enabled with '--debug' builds.
1794 [Andy Polyakov, Emilia Käsper]
1796 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
1797 have been moved out of the public header files. New functions for managing
1798 these have been added.
1801 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
1802 objects have been moved out of the public header files. New
1803 functions for managing these have been added.
1806 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
1807 have been moved out of the public header files. New functions for managing
1808 these have been added.
1811 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
1812 moved out of the public header files. New functions for managing these
1816 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
1819 *) Removed the mk1mf build scripts.
1822 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
1823 it is always safe to #include a header now.
1826 *) Removed the aged BC-32 config and all its supporting scripts
1829 *) Removed support for Ultrix, Netware, and OS/2.
1832 *) Add support for HKDF.
1833 [Alessandro Ghedini]
1835 *) Add support for blake2b and blake2s
1838 *) Added support for "pipelining". Ciphers that have the
1839 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
1840 encryptions/decryptions simultaneously. There are currently no built-in
1841 ciphers with this property but the expectation is that engines will be able
1842 to offer it to significantly improve throughput. Support has been extended
1843 into libssl so that multiple records for a single connection can be
1844 processed in one go (for >=TLS 1.1).
1847 *) Added the AFALG engine. This is an async capable engine which is able to
1848 offload work to the Linux kernel. In this initial version it only supports
1849 AES128-CBC. The kernel must be version 4.1.0 or greater.
1852 *) OpenSSL now uses a new threading API. It is no longer necessary to
1853 set locking callbacks to use OpenSSL in a multi-threaded environment. There
1854 are two supported threading models: pthreads and windows threads. It is
1855 also possible to configure OpenSSL at compile time for "no-threads". The
1856 old threading API should no longer be used. The functions have been
1857 replaced with "no-op" compatibility macros.
1858 [Alessandro Ghedini, Matt Caswell]
1860 *) Modify behavior of ALPN to invoke callback after SNI/servername
1861 callback, such that updates to the SSL_CTX affect ALPN.
1864 *) Add SSL_CIPHER queries for authentication and key-exchange.
1867 *) Changes to the DEFAULT cipherlist:
1868 - Prefer (EC)DHE handshakes over plain RSA.
1869 - Prefer AEAD ciphers over legacy ciphers.
1870 - Prefer ECDSA over RSA when both certificates are available.
1871 - Prefer TLSv1.2 ciphers/PRF.
1872 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
1876 *) Change the ECC default curve list to be this, in order: x25519,
1877 secp256r1, secp521r1, secp384r1.
1880 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
1881 disabled by default. They can be re-enabled using the
1882 enable-weak-ssl-ciphers option to Configure.
1885 *) If the server has ALPN configured, but supports no protocols that the
1886 client advertises, send a fatal "no_application_protocol" alert.
1887 This behaviour is SHALL in RFC 7301, though it isn't universally
1888 implemented by other servers.
1891 *) Add X25519 support.
1892 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
1893 for public and private key encoding using the format documented in
1894 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
1895 key generation and key derivation.
1897 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
1901 *) Deprecate SRP_VBASE_get_by_user.
1902 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1903 In order to fix an unavoidable memory leak (CVE-2016-0798),
1904 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
1905 seed, even if the seed is configured.
1907 Users should use SRP_VBASE_get1_by_user instead. Note that in
1908 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1909 also that even though configuring the SRP seed attempts to hide
1910 invalid usernames by continuing the handshake with fake
1911 credentials, this behaviour is not constant time and no strong
1912 guarantees are made that the handshake is indistinguishable from
1913 that of a valid user.
1916 *) Configuration change; it's now possible to build dynamic engines
1917 without having to build shared libraries and vice versa. This
1918 only applies to the engines in engines/, those in crypto/engine/
1919 will always be built into libcrypto (i.e. "static").
1921 Building dynamic engines is enabled by default; to disable, use
1922 the configuration option "disable-dynamic-engine".
1924 The only requirements for building dynamic engines are the
1925 presence of the DSO module and building with position independent
1926 code, so they will also automatically be disabled if configuring
1927 with "disable-dso" or "disable-pic".
1929 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
1930 are also taken away from openssl/opensslconf.h, as they are
1934 *) Configuration change; if there is a known flag to compile
1935 position independent code, it will always be applied on the
1936 libcrypto and libssl object files, and never on the application
1937 object files. This means other libraries that use routines from
1938 libcrypto / libssl can be made into shared libraries regardless
1939 of how OpenSSL was configured.
1941 If this isn't desirable, the configuration options "disable-pic"
1942 or "no-pic" can be used to disable the use of PIC. This will
1943 also disable building shared libraries and dynamic engines.
1946 *) Removed JPAKE code. It was experimental and has no wide use.
1949 *) The INSTALL_PREFIX Makefile variable has been renamed to
1950 DESTDIR. That makes for less confusion on what this variable
1951 is for. Also, the configuration option --install_prefix is
1955 *) Heartbeat for TLS has been removed and is disabled by default
1956 for DTLS; configure with enable-heartbeats. Code that uses the
1957 old #define's might need to be updated.
1958 [Emilia Käsper, Rich Salz]
1960 *) Rename REF_CHECK to REF_DEBUG.
1963 *) New "unified" build system
1965 The "unified" build system is aimed to be a common system for all
1966 platforms we support. With it comes new support for VMS.
1968 This system builds supports building in a different directory tree
1969 than the source tree. It produces one Makefile (for unix family
1970 or lookalikes), or one descrip.mms (for VMS).
1972 The source of information to make the Makefile / descrip.mms is
1973 small files called 'build.info', holding the necessary
1974 information for each directory with source to compile, and a
1975 template in Configurations, like unix-Makefile.tmpl or
1978 With this change, the library names were also renamed on Windows
1979 and on VMS. They now have names that are closer to the standard
1980 on Unix, and include the major version number, and in certain
1981 cases, the architecture they are built for. See "Notes on shared
1982 libraries" in INSTALL.
1984 We rely heavily on the perl module Text::Template.
1987 *) Added support for auto-initialisation and de-initialisation of the library.
1988 OpenSSL no longer requires explicit init or deinit routines to be called,
1989 except in certain circumstances. See the OPENSSL_init_crypto() and
1990 OPENSSL_init_ssl() man pages for further information.
1993 *) The arguments to the DTLSv1_listen function have changed. Specifically the
1994 "peer" argument is now expected to be a BIO_ADDR object.
1996 *) Rewrite of BIO networking library. The BIO library lacked consistent
1997 support of IPv6, and adding it required some more extensive
1998 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
1999 which hold all types of addresses and chains of address information.
2000 It also introduces a new API, with functions like BIO_socket,
2001 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
2002 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
2003 have been adapted accordingly.
2006 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
2010 *) CRIME protection: disable compression by default, even if OpenSSL is
2011 compiled with zlib enabled. Applications can still enable compression
2012 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
2013 using the SSL_CONF library to configure compression.
2016 *) The signature of the session callback configured with
2017 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
2018 was explicitly marked as 'const unsigned char*' instead of
2022 *) Always DPURIFY. Remove the use of uninitialized memory in the
2023 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
2026 *) Removed many obsolete configuration items, including
2027 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
2028 MD2_CHAR, MD2_INT, MD2_LONG
2030 IDEA_SHORT, IDEA_LONG
2031 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
2032 [Rich Salz, with advice from Andy Polyakov]
2034 *) Many BN internals have been moved to an internal header file.
2035 [Rich Salz with help from Andy Polyakov]
2037 *) Configuration and writing out the results from it has changed.
2038 Files such as Makefile include/openssl/opensslconf.h and are now
2039 produced through general templates, such as Makefile.in and
2040 crypto/opensslconf.h.in and some help from the perl module
2043 Also, the center of configuration information is no longer
2044 Makefile. Instead, Configure produces a perl module in
2045 configdata.pm which holds most of the config data (in the hash
2046 table %config), the target data that comes from the target
2047 configuration in one of the Configurations/*.conf files (in
2051 *) To clarify their intended purposes, the Configure options
2052 --prefix and --openssldir change their semantics, and become more
2053 straightforward and less interdependent.
2055 --prefix shall be used exclusively to give the location INSTALLTOP
2056 where programs, scripts, libraries, include files and manuals are
2057 going to be installed. The default is now /usr/local.
2059 --openssldir shall be used exclusively to give the default
2060 location OPENSSLDIR where certificates, private keys, CRLs are
2061 managed. This is also where the default openssl.cnf gets
2063 If the directory given with this option is a relative path, the
2064 values of both the --prefix value and the --openssldir value will
2065 be combined to become OPENSSLDIR.
2066 The default for --openssldir is INSTALLTOP/ssl.
2068 Anyone who uses --openssldir to specify where OpenSSL is to be
2069 installed MUST change to use --prefix instead.
2072 *) The GOST engine was out of date and therefore it has been removed. An up
2073 to date GOST engine is now being maintained in an external repository.
2074 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
2075 support for GOST ciphersuites (these are only activated if a GOST engine
2079 *) EGD is no longer supported by default; use enable-egd when
2081 [Ben Kaduk and Rich Salz]
2083 *) The distribution now has Makefile.in files, which are used to
2084 create Makefile's when Configure is run. *Configure must be run
2085 before trying to build now.*
2088 *) The return value for SSL_CIPHER_description() for error conditions
2092 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
2094 Obtaining and performing DNSSEC validation of TLSA records is
2095 the application's responsibility. The application provides
2096 the TLSA records of its choice to OpenSSL, and these are then
2097 used to authenticate the peer.
2099 The TLSA records need not even come from DNS. They can, for
2100 example, be used to implement local end-entity certificate or
2101 trust-anchor "pinning", where the "pin" data takes the form
2102 of TLSA records, which can augment or replace verification
2103 based on the usual WebPKI public certification authorities.
2106 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
2107 continues to support deprecated interfaces in default builds.
2108 However, applications are strongly advised to compile their
2109 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
2110 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
2111 or the 1.1.0 releases.
2113 In environments in which all applications have been ported to
2114 not use any deprecated interfaces OpenSSL's Configure script
2115 should be used with the --api=1.1.0 option to entirely remove
2116 support for the deprecated features from the library and
2117 unconditionally disable them in the installed headers.
2118 Essentially the same effect can be achieved with the "no-deprecated"
2119 argument to Configure, except that this will always restrict
2120 the build to just the latest API, rather than a fixed API
2123 As applications are ported to future revisions of the API,
2124 they should update their compile-time OPENSSL_API_COMPAT define
2125 accordingly, but in most cases should be able to continue to
2126 compile with later releases.
2128 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
2129 0x10000000L and 0x00908000L, respectively. However those
2130 versions did not support the OPENSSL_API_COMPAT feature, and
2131 so applications are not typically tested for explicit support
2132 of just the undeprecated features of either release.
2135 *) Add support for setting the minimum and maximum supported protocol.
2136 It can bet set via the SSL_set_min_proto_version() and
2137 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
2138 MaxProtocol. It's recommended to use the new APIs to disable
2139 protocols instead of disabling individual protocols using
2140 SSL_set_options() or SSL_CONF's Protocol. This change also
2141 removes support for disabling TLS 1.2 in the OpenSSL TLS
2142 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
2145 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
2148 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
2149 and integrates ECDSA and ECDH functionality into EC. Implementations can
2150 now redirect key generation and no longer need to convert to or from
2153 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
2154 include the ec.h header file instead.
2157 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
2158 ciphers who are no longer supported and drops support the ephemeral RSA key
2159 exchange. The LOW ciphers currently doesn't have any ciphers in it.
2162 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
2163 opaque. For HMAC_CTX, the following constructors and destructors
2166 HMAC_CTX *HMAC_CTX_new(void);
2167 void HMAC_CTX_free(HMAC_CTX *ctx);
2169 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
2170 destroy such methods has been added. See EVP_MD_meth_new(3) and
2171 EVP_CIPHER_meth_new(3) for documentation.
2174 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
2175 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
2176 EVP_MD_CTX_reset() should be called instead to reinitialise
2177 an already created structure.
2178 2) For consistency with the majority of our object creators and
2179 destructors, EVP_MD_CTX_(create|destroy) were renamed to
2180 EVP_MD_CTX_(new|free). The old names are retained as macros
2181 for deprecated builds.
2184 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
2185 cryptographic operations to be performed asynchronously as long as an
2186 asynchronous capable engine is used. See the ASYNC_start_job() man page for
2187 further details. Libssl has also had this capability integrated with the
2188 introduction of the new mode SSL_MODE_ASYNC and associated error
2189 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
2190 pages. This work was developed in partnership with Intel Corp.
2193 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
2194 always enabled now. If you want to disable the support you should
2195 exclude it using the list of supported ciphers. This also means that the
2196 "-no_ecdhe" option has been removed from s_server.
2199 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
2200 SSL_{CTX_}set1_curves() which can set a list.
2203 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
2204 curve you want to support using SSL_{CTX_}set1_curves().
2207 *) State machine rewrite. The state machine code has been significantly
2208 refactored in order to remove much duplication of code and solve issues
2209 with the old code (see ssl/statem/README for further details). This change
2210 does have some associated API changes. Notably the SSL_state() function
2211 has been removed and replaced by SSL_get_state which now returns an
2212 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
2213 altogether. The previous handshake states defined in ssl.h and ssl3.h have
2217 *) All instances of the string "ssleay" in the public API were replaced
2218 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
2219 Some error codes related to internal RSA_eay API's were renamed.
2222 *) The demo files in crypto/threads were moved to demo/threads.
2225 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
2227 [Matt Caswell, Rich Salz]
2229 *) New ASN.1 embed macro.
2231 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
2232 structure is not allocated: it is part of the parent. That is instead of
2240 This reduces memory fragmentation and make it impossible to accidentally
2241 set a mandatory field to NULL.
2243 This currently only works for some fields specifically a SEQUENCE, CHOICE,
2244 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
2245 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
2249 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
2252 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
2253 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
2254 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
2255 DES and RC4 ciphersuites.
2258 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2259 This changes the decoding behaviour for some invalid messages,
2260 though the change is mostly in the more lenient direction, and
2261 legacy behaviour is preserved as much as possible.
2264 *) Fix no-stdio build.
2265 [ David Woodhouse <David.Woodhouse@intel.com> and also
2266 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
2268 *) New testing framework
2269 The testing framework has been largely rewritten and is now using
2270 perl and the perl modules Test::Harness and an extended variant of
2271 Test::More called OpenSSL::Test to do its work. All test scripts in
2272 test/ have been rewritten into test recipes, and all direct calls to
2273 executables in test/Makefile have become individual recipes using the
2274 simplified testing OpenSSL::Test::Simple.
2276 For documentation on our testing modules, do:
2278 perldoc test/testlib/OpenSSL/Test/Simple.pm
2279 perldoc test/testlib/OpenSSL/Test.pm
2283 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
2284 are used; the latter aborts on memory leaks (usually checked on exit).
2285 Some undocumented "set malloc, etc., hooks" functions were removed
2286 and others were changed. All are now documented.
2289 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2291 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2293 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
2294 from RFC4279, RFC4785, RFC5487, RFC5489.
2296 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
2297 original RSA_PSK patch.
2300 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
2301 era flag was never set throughout the codebase (only read). Also removed
2302 SSL3_FLAGS_POP_BUFFER which was only used if
2303 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
2306 *) Changed the default name options in the "ca", "crl", "req" and "x509"
2307 to be "oneline" instead of "compat".
2310 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
2311 not aware of clients that still exhibit this bug, and the workaround
2312 hasn't been working properly for a while.
2315 *) The return type of BIO_number_read() and BIO_number_written() as well as
2316 the corresponding num_read and num_write members in the BIO structure has
2317 changed from unsigned long to uint64_t. On platforms where an unsigned
2318 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
2322 *) Given the pervasive nature of TLS extensions it is inadvisable to run
2323 OpenSSL without support for them. It also means that maintaining
2324 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
2325 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
2328 *) Removed support for the two export grade static DH ciphersuites
2329 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
2330 were newly added (along with a number of other static DH ciphersuites) to
2331 1.0.2. However the two export ones have *never* worked since they were
2332 introduced. It seems strange in any case to be adding new export
2333 ciphersuites, and given "logjam" it also does not seem correct to fix them.
2336 *) Version negotiation has been rewritten. In particular SSLv23_method(),
2337 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
2338 and turned into macros which simply call the new preferred function names
2339 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
2340 should use the new names instead. Also as part of this change the ssl23.h
2341 header file has been removed.
2344 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
2345 code and the associated standard is no longer considered fit-for-purpose.
2348 *) RT2547 was closed. When generating a private key, try to make the
2349 output file readable only by the owner. This behavior change might
2350 be noticeable when interacting with other software.
2352 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
2356 *) Added HTTP GET support to the ocsp command.
2359 *) Changed default digest for the dgst and enc commands from MD5 to
2363 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
2366 *) Added support for TLS extended master secret from
2367 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
2368 initial patch which was a great help during development.
2371 *) All libssl internal structures have been removed from the public header
2372 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
2373 now redundant). Users should not attempt to access internal structures
2374 directly. Instead they should use the provided API functions.
2377 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
2378 Access to deprecated functions can be re-enabled by running config with
2379 "enable-deprecated". In addition applications wishing to use deprecated
2380 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
2381 will, by default, disable some transitive includes that previously existed
2382 in the header files (e.g. ec.h will no longer, by default, include bn.h)
2385 *) Added support for OCB mode. OpenSSL has been granted a patent license
2386 compatible with the OpenSSL license for use of OCB. Details are available
2387 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
2388 for OCB can be removed by calling config with no-ocb.
2391 *) SSLv2 support has been removed. It still supports receiving a SSLv2
2392 compatible client hello.
2395 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
2396 done while fixing the error code for the key-too-small case.
2397 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
2399 *) CA.sh has been removed; use CA.pl instead.
2402 *) Removed old DES API.
2405 *) Remove various unsupported platforms:
2411 Sinix/ReliantUNIX RM400
2416 16-bit platforms such as WIN16
2419 *) Clean up OPENSSL_NO_xxx #define's
2420 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
2421 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
2422 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
2423 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
2424 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
2425 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
2426 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
2427 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
2428 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
2429 Remove MS_STATIC; it's a relic from platforms <32 bits.
2432 *) Cleaned up dead code
2433 Remove all but one '#ifdef undef' which is to be looked at.
2436 *) Clean up calling of xxx_free routines.
2437 Just like free(), fix most of the xxx_free routines to accept
2438 NULL. Remove the non-null checks from callers. Save much code.
2441 *) Add secure heap for storage of private keys (when possible).
2442 Add BIO_s_secmem(), CBIGNUM, etc.
2443 Contributed by Akamai Technologies under our Corporate CLA.
2446 *) Experimental support for a new, fast, unbiased prime candidate generator,
2447 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
2448 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
2450 *) New output format NSS in the sess_id command line tool. This allows
2451 exporting the session id and the master key in NSS keylog format.
2452 [Martin Kaiser <martin@kaiser.cx>]
2454 *) Harmonize version and its documentation. -f flag is used to display
2456 [mancha <mancha1@zoho.com>]
2458 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
2459 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
2460 [mancha <mancha1@zoho.com>]
2462 *) Fix some double frees. These are not thought to be exploitable.
2463 [mancha <mancha1@zoho.com>]
2465 *) A missing bounds check in the handling of the TLS heartbeat extension
2466 can be used to reveal up to 64k of memory to a connected client or
2469 Thanks for Neel Mehta of Google Security for discovering this bug and to
2470 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
2471 preparing the fix (CVE-2014-0160)
2472 [Adam Langley, Bodo Moeller]
2474 *) Fix for the attack described in the paper "Recovering OpenSSL
2475 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
2476 by Yuval Yarom and Naomi Benger. Details can be obtained from:
2477 http://eprint.iacr.org/2014/140
2479 Thanks to Yuval Yarom and Naomi Benger for discovering this
2480 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
2481 [Yuval Yarom and Naomi Benger]
2483 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2484 this fixes a limitation in previous versions of OpenSSL.
2487 *) Experimental encrypt-then-mac support.
2489 Experimental support for encrypt then mac from
2490 draft-gutmann-tls-encrypt-then-mac-02.txt
2492 To enable it set the appropriate extension number (0x42 for the test
2493 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
2495 For non-compliant peers (i.e. just about everything) this should have no
2498 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
2502 *) Add EVP support for key wrapping algorithms, to avoid problems with
2503 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2504 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2505 algorithms and include tests cases.
2508 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
2512 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2513 MGF1 digest and OAEP label.
2516 *) Make openssl verify return errors.
2517 [Chris Palmer <palmer@google.com> and Ben Laurie]
2519 *) New function ASN1_TIME_diff to calculate the difference between two
2520 ASN1_TIME structures or one structure and the current time.
2523 *) Update fips_test_suite to support multiple command line options. New
2524 test to induce all self test errors in sequence and check expected
2528 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
2529 sign or verify all in one operation.
2532 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
2533 test programs and fips_test_suite. Includes functionality to parse
2534 the minimal script output of fipsalgest.pl directly.
2537 *) Add authorisation parameter to FIPS_module_mode_set().
2540 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
2543 *) Use separate DRBG fields for internal and external flags. New function
2544 FIPS_drbg_health_check() to perform on demand health checking. Add
2545 generation tests to fips_test_suite with reduced health check interval to
2546 demonstrate periodic health checking. Add "nodh" option to
2547 fips_test_suite to skip very slow DH test.
2550 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
2554 *) More extensive health check for DRBG checking many more failure modes.
2555 New function FIPS_selftest_drbg_all() to handle every possible DRBG
2556 combination: call this in fips_test_suite.
2559 *) Add support for canonical generation of DSA parameter 'g'. See
2562 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
2563 POST to handle HMAC cases.
2566 *) Add functions FIPS_module_version() and FIPS_module_version_text()
2567 to return numerical and string versions of the FIPS module number.
2570 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
2571 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
2572 outside the validated module in the FIPS capable OpenSSL.
2575 *) Minor change to DRBG entropy callback semantics. In some cases
2576 there is no multiple of the block length between min_len and
2577 max_len. Allow the callback to return more than max_len bytes
2578 of entropy but discard any extra: it is the callback's responsibility
2579 to ensure that the extra data discarded does not impact the
2580 requested amount of entropy.
2583 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
2584 information in FIPS186-3, SP800-57 and SP800-131A.
2587 *) CCM support via EVP. Interface is very similar to GCM case except we
2588 must supply all data in one chunk (i.e. no update, final) and the
2589 message length must be supplied if AAD is used. Add algorithm test
2593 *) Initial version of POST overhaul. Add POST callback to allow the status
2594 of POST to be monitored and/or failures induced. Modify fips_test_suite
2595 to use callback. Always run all selftests even if one fails.
2598 *) XTS support including algorithm test driver in the fips_gcmtest program.
2599 Note: this does increase the maximum key length from 32 to 64 bytes but
2600 there should be no binary compatibility issues as existing applications
2601 will never use XTS mode.
2604 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
2605 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
2606 performs algorithm blocking for unapproved PRNG types. Also do not
2607 set PRNG type in FIPS_mode_set(): leave this to the application.
2608 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
2609 the standard OpenSSL PRNG: set additional data to a date time vector.
2612 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
2613 This shouldn't present any incompatibility problems because applications
2614 shouldn't be using these directly and any that are will need to rethink
2615 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
2618 *) Extensive self tests and health checking required by SP800-90 DRBG.
2619 Remove strength parameter from FIPS_drbg_instantiate and always
2620 instantiate at maximum supported strength.
2623 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
2626 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
2629 *) New function DH_compute_key_padded() to compute a DH key and pad with
2630 leading zeroes if needed: this complies with SP800-56A et al.
2633 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
2634 anything, incomplete, subject to change and largely untested at present.
2637 *) Modify fipscanisteronly build option to only build the necessary object
2638 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
2641 *) Add experimental option FIPSSYMS to give all symbols in
2642 fipscanister.o and FIPS or fips prefix. This will avoid
2643 conflicts with future versions of OpenSSL. Add perl script
2644 util/fipsas.pl to preprocess assembly language source files
2645 and rename any affected symbols.
2648 *) Add selftest checks and algorithm block of non-fips algorithms in
2649 FIPS mode. Remove DES2 from selftests.
2652 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
2653 return internal method without any ENGINE dependencies. Add new
2654 tiny fips sign and verify functions.
2657 *) New build option no-ec2m to disable characteristic 2 code.
2660 *) New build option "fipscanisteronly". This only builds fipscanister.o
2661 and (currently) associated fips utilities. Uses the file Makefile.fips
2662 instead of Makefile.org as the prototype.
2665 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
2666 Update fips_gcmtest to use IV generator.
2669 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
2670 setting output buffer to NULL. The *Final function must be
2671 called although it will not retrieve any additional data. The tag
2672 can be set or retrieved with a ctrl. The IV length is by default 12
2673 bytes (96 bits) but can be set to an alternative value. If the IV
2674 length exceeds the maximum IV length (currently 16 bytes) it cannot be
2678 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
2679 underlying do_cipher function handles all cipher semantics itself
2680 including padding and finalisation. This is useful if (for example)
2681 an ENGINE cipher handles block padding itself. The behaviour of
2682 do_cipher is subtly changed if this flag is set: the return value
2683 is the number of characters written to the output buffer (zero is
2684 no longer an error code) or a negative error code. Also if the
2685 input buffer is NULL and length 0 finalisation should be performed.
2688 *) If a candidate issuer certificate is already part of the constructed
2689 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
2692 *) Improve forward-security support: add functions
2694 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
2695 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
2697 for use by SSL/TLS servers; the callback function will be called whenever a
2698 new session is created, and gets to decide whether the session may be
2699 cached to make it resumable (return 0) or not (return 1). (As by the
2700 SSL/TLS protocol specifications, the session_id sent by the server will be
2701 empty to indicate that the session is not resumable; also, the server will
2702 not generate RFC 4507 (RFC 5077) session tickets.)
2704 A simple reasonable callback implementation is to return is_forward_secure.
2705 This parameter will be set to 1 or 0 depending on the ciphersuite selected
2706 by the SSL/TLS server library, indicating whether it can provide forward
2708 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2710 *) New -verify_name option in command line utilities to set verification
2714 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
2715 Add CMAC pkey methods.
2718 *) Experimental renegotiation in s_server -www mode. If the client
2719 browses /reneg connection is renegotiated. If /renegcert it is
2720 renegotiated requesting a certificate.
2723 *) Add an "external" session cache for debugging purposes to s_server. This
2724 should help trace issues which normally are only apparent in deployed
2725 multi-process servers.
2728 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
2729 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
2730 BIO_set_cipher() and some obscure PEM functions were changed so they
2731 can now return an error. The RAND changes required a change to the
2732 RAND_METHOD structure.
2735 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
2736 a gcc attribute to warn if the result of a function is ignored. This
2737 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
2738 whose return value is often ignored.
2741 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
2742 These allow SCTs (signed certificate timestamps) to be requested and
2743 validated when establishing a connection.
2744 [Rob Percival <robpercival@google.com>]
2746 Changes between 1.0.2g and 1.0.2h [3 May 2016]
2748 *) Prevent padding oracle in AES-NI CBC MAC check
2750 A MITM attacker can use a padding oracle attack to decrypt traffic
2751 when the connection uses an AES CBC cipher and the server support
2754 This issue was introduced as part of the fix for Lucky 13 padding
2755 attack (CVE-2013-0169). The padding check was rewritten to be in
2756 constant time by making sure that always the same bytes are read and
2757 compared against either the MAC or padding bytes. But it no longer
2758 checked that there was enough data to have both the MAC and padding
2761 This issue was reported by Juraj Somorovsky using TLS-Attacker.
2765 *) Fix EVP_EncodeUpdate overflow
2767 An overflow can occur in the EVP_EncodeUpdate() function which is used for
2768 Base64 encoding of binary data. If an attacker is able to supply very large
2769 amounts of input data then a length check can overflow resulting in a heap
2772 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
2773 the PEM_write_bio* family of functions. These are mainly used within the
2774 OpenSSL command line applications, so any application which processes data
2775 from an untrusted source and outputs it as a PEM file should be considered
2776 vulnerable to this issue. User applications that call these APIs directly
2777 with large amounts of untrusted data may also be vulnerable.
2779 This issue was reported by Guido Vranken.
2783 *) Fix EVP_EncryptUpdate overflow
2785 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
2786 is able to supply very large amounts of input data after a previous call to
2787 EVP_EncryptUpdate() with a partial block then a length check can overflow
2788 resulting in a heap corruption. Following an analysis of all OpenSSL
2789 internal usage of the EVP_EncryptUpdate() function all usage is one of two
2790 forms. The first form is where the EVP_EncryptUpdate() call is known to be
2791 the first called function after an EVP_EncryptInit(), and therefore that
2792 specific call must be safe. The second form is where the length passed to
2793 EVP_EncryptUpdate() can be seen from the code to be some small value and
2794 therefore there is no possibility of an overflow. Since all instances are
2795 one of these two forms, it is believed that there can be no overflows in
2796 internal code due to this problem. It should be noted that
2797 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
2798 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
2799 of these calls have also been analysed too and it is believed there are no
2800 instances in internal usage where an overflow could occur.
2802 This issue was reported by Guido Vranken.
2806 *) Prevent ASN.1 BIO excessive memory allocation
2808 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
2809 a short invalid encoding can cause allocation of large amounts of memory
2810 potentially consuming excessive resources or exhausting memory.
2812 Any application parsing untrusted data through d2i BIO functions is
2813 affected. The memory based functions such as d2i_X509() are *not* affected.
2814 Since the memory based functions are used by the TLS library, TLS
2815 applications are not affected.
2817 This issue was reported by Brian Carpenter.
2823 ASN1 Strings that are over 1024 bytes can cause an overread in applications
2824 using the X509_NAME_oneline() function on EBCDIC systems. This could result
2825 in arbitrary stack data being returned in the buffer.
2827 This issue was reported by Guido Vranken.
2831 *) Modify behavior of ALPN to invoke callback after SNI/servername
2832 callback, such that updates to the SSL_CTX affect ALPN.
2835 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
2839 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
2840 methods are enabled and ssl2 is disabled the methods return NULL.
2843 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
2845 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
2846 Builds that are not configured with "enable-weak-ssl-ciphers" will not
2847 provide any "EXPORT" or "LOW" strength ciphers.
2850 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
2851 is by default disabled at build-time. Builds that are not configured with
2852 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
2853 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
2854 will need to explicitly call either of:
2856 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
2858 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
2860 as appropriate. Even if either of those is used, or the application
2861 explicitly uses the version-specific SSLv2_method() or its client and
2862 server variants, SSLv2 ciphers vulnerable to exhaustive search key
2863 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
2864 ciphers, and SSLv2 56-bit DES are no longer available.
2868 *) Fix a double-free in DSA code
2870 A double free bug was discovered when OpenSSL parses malformed DSA private
2871 keys and could lead to a DoS attack or memory corruption for applications
2872 that receive DSA private keys from untrusted sources. This scenario is
2875 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
2880 *) Disable SRP fake user seed to address a server memory leak.
2882 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
2884 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
2885 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
2886 was changed to ignore the "fake user" SRP seed, even if the seed
2889 Users should use SRP_VBASE_get1_by_user instead. Note that in
2890 SRP_VBASE_get1_by_user, caller must free the returned value. Note
2891 also that even though configuring the SRP seed attempts to hide
2892 invalid usernames by continuing the handshake with fake
2893 credentials, this behaviour is not constant time and no strong
2894 guarantees are made that the handshake is indistinguishable from
2895 that of a valid user.
2899 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
2901 In the BN_hex2bn function the number of hex digits is calculated using an
2902 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
2903 large values of |i| this can result in |bn_expand| not allocating any
2904 memory because |i * 4| is negative. This can leave the internal BIGNUM data
2905 field as NULL leading to a subsequent NULL ptr deref. For very large values
2906 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
2907 In this case memory is allocated to the internal BIGNUM data field, but it
2908 is insufficiently sized leading to heap corruption. A similar issue exists
2909 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
2910 is ever called by user applications with very large untrusted hex/dec data.
2911 This is anticipated to be a rare occurrence.
2913 All OpenSSL internal usage of these functions use data that is not expected
2914 to be untrusted, e.g. config file data or application command line
2915 arguments. If user developed applications generate config file data based
2916 on untrusted data then it is possible that this could also lead to security
2917 consequences. This is also anticipated to be rare.
2919 This issue was reported to OpenSSL by Guido Vranken.
2923 *) Fix memory issues in BIO_*printf functions
2925 The internal |fmtstr| function used in processing a "%s" format string in
2926 the BIO_*printf functions could overflow while calculating the length of a
2927 string and cause an OOB read when printing very long strings.
2929 Additionally the internal |doapr_outch| function can attempt to write to an
2930 OOB memory location (at an offset from the NULL pointer) in the event of a
2931 memory allocation failure. In 1.0.2 and below this could be caused where
2932 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
2933 could be in processing a very long "%s" format string. Memory leaks can
2936 The first issue may mask the second issue dependent on compiler behaviour.
2937 These problems could enable attacks where large amounts of untrusted data
2938 is passed to the BIO_*printf functions. If applications use these functions
2939 in this way then they could be vulnerable. OpenSSL itself uses these
2940 functions when printing out human-readable dumps of ASN.1 data. Therefore
2941 applications that print this data could be vulnerable if the data is from
2942 untrusted sources. OpenSSL command line applications could also be
2943 vulnerable where they print out ASN.1 data, or if untrusted data is passed
2944 as command line arguments.
2946 Libssl is not considered directly vulnerable. Additionally certificates etc
2947 received via remote connections via libssl are also unlikely to be able to
2948 trigger these issues because of message size limits enforced within libssl.
2950 This issue was reported to OpenSSL Guido Vranken.
2954 *) Side channel attack on modular exponentiation
2956 A side-channel attack was found which makes use of cache-bank conflicts on
2957 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
2958 of RSA keys. The ability to exploit this issue is limited as it relies on
2959 an attacker who has control of code in a thread running on the same
2960 hyper-threaded core as the victim thread which is performing decryptions.
2962 This issue was reported to OpenSSL by Yuval Yarom, The University of
2963 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
2964 Nadia Heninger, University of Pennsylvania with more information at
2965 http://cachebleed.info.
2969 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
2970 if no keysize is specified with default_bits. This fixes an
2971 omission in an earlier change that changed all RSA/DSA key generation
2972 apps to use 2048 bits by default.
2975 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
2976 *) DH small subgroups
2978 Historically OpenSSL only ever generated DH parameters based on "safe"
2979 primes. More recently (in version 1.0.2) support was provided for
2980 generating X9.42 style parameter files such as those required for RFC 5114
2981 support. The primes used in such files may not be "safe". Where an
2982 application is using DH configured with parameters based on primes that are
2983 not "safe" then an attacker could use this fact to find a peer's private
2984 DH exponent. This attack requires that the attacker complete multiple
2985 handshakes in which the peer uses the same private DH exponent. For example
2986 this could be used to discover a TLS server's private DH exponent if it's
2987 reusing the private DH exponent or it's using a static DH ciphersuite.
2989 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
2990 TLS. It is not on by default. If the option is not set then the server
2991 reuses the same private DH exponent for the life of the server process and
2992 would be vulnerable to this attack. It is believed that many popular
2993 applications do set this option and would therefore not be at risk.
2995 The fix for this issue adds an additional check where a "q" parameter is
2996 available (as is the case in X9.42 based parameters). This detects the
2997 only known attack, and is the only possible defense for static DH
2998 ciphersuites. This could have some performance impact.
3000 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
3001 default and cannot be disabled. This could have some performance impact.
3003 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
3007 *) SSLv2 doesn't block disabled ciphers
3009 A malicious client can negotiate SSLv2 ciphers that have been disabled on
3010 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
3011 been disabled, provided that the SSLv2 protocol was not also disabled via
3014 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
3015 and Sebastian Schinzel.
3019 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
3021 *) BN_mod_exp may produce incorrect results on x86_64
3023 There is a carry propagating bug in the x86_64 Montgomery squaring
3024 procedure. No EC algorithms are affected. Analysis suggests that attacks
3025 against RSA and DSA as a result of this defect would be very difficult to
3026 perform and are not believed likely. Attacks against DH are considered just
3027 feasible (although very difficult) because most of the work necessary to
3028 deduce information about a private key may be performed offline. The amount
3029 of resources required for such an attack would be very significant and
3030 likely only accessible to a limited number of attackers. An attacker would
3031 additionally need online access to an unpatched system using the target
3032 private key in a scenario with persistent DH parameters and a private
3033 key that is shared between multiple clients. For example this can occur by
3034 default in OpenSSL DHE based SSL/TLS ciphersuites.
3036 This issue was reported to OpenSSL by Hanno Böck.
3040 *) Certificate verify crash with missing PSS parameter
3042 The signature verification routines will crash with a NULL pointer
3043 dereference if presented with an ASN.1 signature using the RSA PSS
3044 algorithm and absent mask generation function parameter. Since these
3045 routines are used to verify certificate signature algorithms this can be
3046 used to crash any certificate verification operation and exploited in a
3047 DoS attack. Any application which performs certificate verification is
3048 vulnerable including OpenSSL clients and servers which enable client
3051 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
3055 *) X509_ATTRIBUTE memory leak
3057 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
3058 memory. This structure is used by the PKCS#7 and CMS routines so any
3059 application which reads PKCS#7 or CMS data from untrusted sources is
3060 affected. SSL/TLS is not affected.
3062 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
3067 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
3068 This changes the decoding behaviour for some invalid messages,
3069 though the change is mostly in the more lenient direction, and
3070 legacy behaviour is preserved as much as possible.
3073 *) In DSA_generate_parameters_ex, if the provided seed is too short,
3075 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
3077 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
3079 *) Alternate chains certificate forgery
3081 During certificate verification, OpenSSL will attempt to find an
3082 alternative certificate chain if the first attempt to build such a chain
3083 fails. An error in the implementation of this logic can mean that an
3084 attacker could cause certain checks on untrusted certificates to be
3085 bypassed, such as the CA flag, enabling them to use a valid leaf
3086 certificate to act as a CA and "issue" an invalid certificate.
3088 This issue was reported to OpenSSL by Adam Langley/David Benjamin
3092 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
3094 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
3095 incompatibility in the handling of HMAC. The previous ABI has now been
3099 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
3101 *) Malformed ECParameters causes infinite loop
3103 When processing an ECParameters structure OpenSSL enters an infinite loop
3104 if the curve specified is over a specially malformed binary polynomial
3107 This can be used to perform denial of service against any
3108 system which processes public keys, certificate requests or
3109 certificates. This includes TLS clients and TLS servers with
3110 client authentication enabled.
3112 This issue was reported to OpenSSL by Joseph Barr-Pixton.
3116 *) Exploitable out-of-bounds read in X509_cmp_time
3118 X509_cmp_time does not properly check the length of the ASN1_TIME
3119 string and can read a few bytes out of bounds. In addition,
3120 X509_cmp_time accepts an arbitrary number of fractional seconds in the
3123 An attacker can use this to craft malformed certificates and CRLs of
3124 various sizes and potentially cause a segmentation fault, resulting in
3125 a DoS on applications that verify certificates or CRLs. TLS clients
3126 that verify CRLs are affected. TLS clients and servers with client
3127 authentication enabled may be affected if they use custom verification
3130 This issue was reported to OpenSSL by Robert Swiecki (Google), and
3131 independently by Hanno Böck.
3135 *) PKCS7 crash with missing EnvelopedContent
3137 The PKCS#7 parsing code does not handle missing inner EncryptedContent
3138 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
3139 with missing content and trigger a NULL pointer dereference on parsing.
3141 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
3142 structures from untrusted sources are affected. OpenSSL clients and
3143 servers are not affected.
3145 This issue was reported to OpenSSL by Michal Zalewski (Google).
3149 *) CMS verify infinite loop with unknown hash function
3151 When verifying a signedData message the CMS code can enter an infinite loop
3152 if presented with an unknown hash function OID. This can be used to perform
3153 denial of service against any system which verifies signedData messages using
3155 This issue was reported to OpenSSL by Johannes Bauer.
3159 *) Race condition handling NewSessionTicket
3161 If a NewSessionTicket is received by a multi-threaded client when attempting to
3162 reuse a previous ticket then a race condition can occur potentially leading to
3163 a double free of the ticket data.
3167 *) Only support 256-bit or stronger elliptic curves with the
3168 'ecdh_auto' setting (server) or by default (client). Of supported
3169 curves, prefer P-256 (both).
3172 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
3174 *) ClientHello sigalgs DoS fix
3176 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
3177 invalid signature algorithms extension a NULL pointer dereference will
3178 occur. This can be exploited in a DoS attack against the server.
3180 This issue was was reported to OpenSSL by David Ramos of Stanford
3183 [Stephen Henson and Matt Caswell]
3185 *) Multiblock corrupted pointer fix
3187 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
3188 feature only applies on 64 bit x86 architecture platforms that support AES
3189 NI instructions. A defect in the implementation of "multiblock" can cause
3190 OpenSSL's internal write buffer to become incorrectly set to NULL when
3191 using non-blocking IO. Typically, when the user application is using a
3192 socket BIO for writing, this will only result in a failed connection.
3193 However if some other BIO is used then it is likely that a segmentation
3194 fault will be triggered, thus enabling a potential DoS attack.
3196 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
3200 *) Segmentation fault in DTLSv1_listen fix
3202 The DTLSv1_listen function is intended to be stateless and processes the
3203 initial ClientHello from many peers. It is common for user code to loop
3204 over the call to DTLSv1_listen until a valid ClientHello is received with
3205 an associated cookie. A defect in the implementation of DTLSv1_listen means
3206 that state is preserved in the SSL object from one invocation to the next
3207 that can lead to a segmentation fault. Errors processing the initial
3208 ClientHello can trigger this scenario. An example of such an error could be
3209 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
3212 This issue was reported to OpenSSL by Per Allansson.
3216 *) Segmentation fault in ASN1_TYPE_cmp fix
3218 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
3219 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
3220 certificate signature algorithm consistency this can be used to crash any
3221 certificate verification operation and exploited in a DoS attack. Any
3222 application which performs certificate verification is vulnerable including
3223 OpenSSL clients and servers which enable client authentication.
3227 *) Segmentation fault for invalid PSS parameters fix
3229 The signature verification routines will crash with a NULL pointer
3230 dereference if presented with an ASN.1 signature using the RSA PSS
3231 algorithm and invalid parameters. Since these routines are used to verify
3232 certificate signature algorithms this can be used to crash any
3233 certificate verification operation and exploited in a DoS attack. Any
3234 application which performs certificate verification is vulnerable including
3235 OpenSSL clients and servers which enable client authentication.
3237 This issue was was reported to OpenSSL by Brian Carpenter.
3241 *) ASN.1 structure reuse memory corruption fix
3243 Reusing a structure in ASN.1 parsing may allow an attacker to cause
3244 memory corruption via an invalid write. Such reuse is and has been
3245 strongly discouraged and is believed to be rare.
3247 Applications that parse structures containing CHOICE or ANY DEFINED BY
3248 components may be affected. Certificate parsing (d2i_X509 and related
3249 functions) are however not affected. OpenSSL clients and servers are
3254 *) PKCS7 NULL pointer dereferences fix
3256 The PKCS#7 parsing code does not handle missing outer ContentInfo
3257 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
3258 missing content and trigger a NULL pointer dereference on parsing.
3260 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
3261 otherwise parse PKCS#7 structures from untrusted sources are
3262 affected. OpenSSL clients and servers are not affected.
3264 This issue was reported to OpenSSL by Michal Zalewski (Google).
3268 *) DoS via reachable assert in SSLv2 servers fix
3270 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
3271 servers that both support SSLv2 and enable export cipher suites by sending
3272 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
3274 This issue was discovered by Sean Burford (Google) and Emilia Käsper
3275 (OpenSSL development team).
3279 *) Empty CKE with client auth and DHE fix
3281 If client auth is used then a server can seg fault in the event of a DHE
3282 ciphersuite being selected and a zero length ClientKeyExchange message
3283 being sent by the client. This could be exploited in a DoS attack.
3287 *) Handshake with unseeded PRNG fix
3289 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
3290 with an unseeded PRNG. The conditions are:
3291 - The client is on a platform where the PRNG has not been seeded
3292 automatically, and the user has not seeded manually
3293 - A protocol specific client method version has been used (i.e. not
3294 SSL_client_methodv23)
3295 - A ciphersuite is used that does not require additional random data from
3296 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
3298 If the handshake succeeds then the client random that has been used will
3299 have been generated from a PRNG with insufficient entropy and therefore the
3300 output may be predictable.
3302 For example using the following command with an unseeded openssl will
3303 succeed on an unpatched platform:
3305 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
3309 *) Use After Free following d2i_ECPrivatekey error fix
3311 A malformed EC private key file consumed via the d2i_ECPrivateKey function
3312 could cause a use after free condition. This, in turn, could cause a double
3313 free in several private key parsing functions (such as d2i_PrivateKey
3314 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
3315 for applications that receive EC private keys from untrusted
3316 sources. This scenario is considered rare.
3318 This issue was discovered by the BoringSSL project and fixed in their
3323 *) X509_to_X509_REQ NULL pointer deref fix
3325 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
3326 the certificate key is invalid. This function is rarely used in practice.
3328 This issue was discovered by Brian Carpenter.
3332 *) Removed the export ciphers from the DEFAULT ciphers
3335 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
3337 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
3338 ARMv5 through ARMv8, as opposite to "locking" it to single one.
3339 So far those who have to target multiple platforms would compromise
3340 and argue that binary targeting say ARMv5 would still execute on
3341 ARMv8. "Universal" build resolves this compromise by providing
3342 near-optimal performance even on newer platforms.
3345 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
3346 (other platforms pending).
3347 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
3349 *) Add support for the SignedCertificateTimestampList certificate and
3350 OCSP response extensions from RFC6962.
3353 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3354 for corner cases. (Certain input points at infinity could lead to
3355 bogus results, with non-infinity inputs mapped to infinity too.)
3358 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
3359 This covers AES, SHA256/512 and GHASH. "Initial" means that most
3360 common cases are optimized and there still is room for further
3361 improvements. Vector Permutation AES for Altivec is also added.
3364 *) Add support for little-endian ppc64 Linux target.
3365 [Marcelo Cerri (IBM)]
3367 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
3368 SHA1, SHA256 and GHASH. "Initial" means that most common cases
3369 are optimized and there still is room for further improvements.
3370 Both 32- and 64-bit modes are supported.
3371 [Andy Polyakov, Ard Biesheuvel (Linaro)]
3373 *) Improved ARMv7 NEON support.
3376 *) Support for SPARC Architecture 2011 crypto extensions, first
3377 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
3378 SHA256/512, MD5, GHASH and modular exponentiation.
3379 [Andy Polyakov, David Miller]
3381 *) Accelerated modular exponentiation for Intel processors, a.k.a.
3383 [Shay Gueron & Vlad Krasnov (Intel Corp)]
3385 *) Support for new and upcoming Intel processors, including AVX2,
3386 BMI and SHA ISA extensions. This includes additional "stitched"
3387 implementations, AESNI-SHA256 and GCM, and multi-buffer support
3390 This work was sponsored by Intel Corp.
3393 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
3394 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
3395 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
3398 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
3399 this fixes a limitation in previous versions of OpenSSL.
3402 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
3403 MGF1 digest and OAEP label.
3406 *) Add EVP support for key wrapping algorithms, to avoid problems with
3407 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
3408 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
3409 algorithms and include tests cases.
3412 *) Add functions to allocate and set the fields of an ECDSA_METHOD
3414 [Douglas E. Engert, Steve Henson]
3416 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
3417 difference in days and seconds between two tm or ASN1_TIME structures.
3420 *) Add -rev test option to s_server to just reverse order of characters
3421 received by client and send back to server. Also prints an abbreviated
3422 summary of the connection parameters.
3425 *) New option -brief for s_client and s_server to print out a brief summary
3426 of connection parameters.
3429 *) Add callbacks for arbitrary TLS extensions.
3430 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
3432 *) New option -crl_download in several openssl utilities to download CRLs
3433 from CRLDP extension in certificates.
3436 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
3439 *) New function X509_CRL_diff to generate a delta CRL from the difference
3440 of two full CRLs. Add support to "crl" utility.
3443 *) New functions to set lookup_crls function and to retrieve
3444 X509_STORE from X509_STORE_CTX.
3447 *) Print out deprecated issuer and subject unique ID fields in
3451 *) Extend OCSP I/O functions so they can be used for simple general purpose
3452 HTTP as well as OCSP. New wrapper function which can be used to download
3453 CRLs using the OCSP API.
3456 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
3459 *) SSL_CONF* functions. These provide a common framework for application
3460 configuration using configuration files or command lines.
3463 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
3464 message callback and prints the results. Needs compile time option
3465 "enable-ssl-trace". New options to s_client and s_server to enable
3469 *) New ctrl and macro to retrieve supported points extensions.
3470 Print out extension in s_server and s_client.
3473 *) New functions to retrieve certificate signature and signature
3477 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
3481 *) New Suite B modes for TLS code. These use and enforce the requirements
3482 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
3483 only use Suite B curves. The Suite B modes can be set by using the
3484 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
3487 *) New chain verification flags for Suite B levels of security. Check
3488 algorithms are acceptable when flags are set in X509_verify_cert.
3491 *) Make tls1_check_chain return a set of flags indicating checks passed
3492 by a certificate chain. Add additional tests to handle client
3493 certificates: checks for matching certificate type and issuer name
3497 *) If an attempt is made to use a signature algorithm not in the peer
3498 preference list abort the handshake. If client has no suitable
3499 signature algorithms in response to a certificate request do not
3500 use the certificate.
3503 *) If server EC tmp key is not in client preference list abort handshake.
3506 *) Add support for certificate stores in CERT structure. This makes it
3507 possible to have different stores per SSL structure or one store in
3508 the parent SSL_CTX. Include distinct stores for certificate chain
3509 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
3510 to build and store a certificate chain in CERT structure: returning
3511 an error if the chain cannot be built: this will allow applications
3512 to test if a chain is correctly configured.
3514 Note: if the CERT based stores are not set then the parent SSL_CTX
3515 store is used to retain compatibility with existing behaviour.
3519 *) New function ssl_set_client_disabled to set a ciphersuite disabled
3520 mask based on the current session, check mask when sending client
3521 hello and checking the requested ciphersuite.
3524 *) New ctrls to retrieve and set certificate types in a certificate
3525 request message. Print out received values in s_client. If certificate
3526 types is not set with custom values set sensible values based on
3527 supported signature algorithms.
3530 *) Support for distinct client and server supported signature algorithms.
3533 *) Add certificate callback. If set this is called whenever a certificate
3534 is required by client or server. An application can decide which
3535 certificate chain to present based on arbitrary criteria: for example
3536 supported signature algorithms. Add very simple example to s_server.
3537 This fixes many of the problems and restrictions of the existing client
3538 certificate callback: for example you can now clear an existing
3539 certificate and specify the whole chain.
3542 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
3543 the certificate can be used for (if anything). Set valid_flags field
3544 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
3545 to have similar checks in it.
3547 Add new "cert_flags" field to CERT structure and include a "strict mode".
3548 This enforces some TLS certificate requirements (such as only permitting
3549 certificate signature algorithms contained in the supported algorithms
3550 extension) which some implementations ignore: this option should be used
3551 with caution as it could cause interoperability issues.
3554 *) Update and tidy signature algorithm extension processing. Work out
3555 shared signature algorithms based on preferences and peer algorithms
3556 and print them out in s_client and s_server. Abort handshake if no
3557 shared signature algorithms.
3560 *) Add new functions to allow customised supported signature algorithms
3561 for SSL and SSL_CTX structures. Add options to s_client and s_server
3565 *) New function SSL_certs_clear() to delete all references to certificates
3566 from an SSL structure. Before this once a certificate had been added
3567 it couldn't be removed.
3570 *) Integrate hostname, email address and IP address checking with certificate
3571 verification. New verify options supporting checking in openssl utility.
3574 *) Fixes and wildcard matching support to hostname and email checking
3575 functions. Add manual page.
3576 [Florian Weimer (Red Hat Product Security Team)]
3578 *) New functions to check a hostname email or IP address against a
3579 certificate. Add options x509 utility to print results of checks against
3583 *) Fix OCSP checking.
3584 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
3586 *) Initial experimental support for explicitly trusted non-root CAs.
3587 OpenSSL still tries to build a complete chain to a root but if an
3588 intermediate CA has a trust setting included that is used. The first
3589 setting is used: whether to trust (e.g., -addtrust option to the x509
3593 *) Add -trusted_first option which attempts to find certificates in the
3594 trusted store even if an untrusted chain is also supplied.
3597 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
3598 platform support for Linux and Android.
3601 *) Support for linux-x32, ILP32 environment in x86_64 framework.
3604 *) Experimental multi-implementation support for FIPS capable OpenSSL.
3605 When in FIPS mode the approved implementations are used as normal,
3606 when not in FIPS mode the internal unapproved versions are used instead.
3607 This means that the FIPS capable OpenSSL isn't forced to use the
3608 (often lower performance) FIPS implementations outside FIPS mode.
3611 *) Transparently support X9.42 DH parameters when calling
3612 PEM_read_bio_DHparameters. This means existing applications can handle
3613 the new parameter format automatically.
3616 *) Initial experimental support for X9.42 DH parameter format: mainly
3617 to support use of 'q' parameter for RFC5114 parameters.
3620 *) Add DH parameters from RFC5114 including test data to dhtest.
3623 *) Support for automatic EC temporary key parameter selection. If enabled
3624 the most preferred EC parameters are automatically used instead of
3625 hardcoded fixed parameters. Now a server just has to call:
3626 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
3627 support ECDH and use the most appropriate parameters.
3630 *) Enhance and tidy EC curve and point format TLS extension code. Use
3631 static structures instead of allocation if default values are used.
3632 New ctrls to set curves we wish to support and to retrieve shared curves.
3633 Print out shared curves in s_server. New options to s_server and s_client
3634 to set list of supported curves.
3637 *) New ctrls to retrieve supported signature algorithms and
3638 supported curve values as an array of NIDs. Extend openssl utility
3639 to print out received values.
3642 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
3643 between NIDs and the more common NIST names such as "P-256". Enhance
3644 ecparam utility and ECC method to recognise the NIST names for curves.
3647 *) Enhance SSL/TLS certificate chain handling to support different
3648 chains for each certificate instead of one chain in the parent SSL_CTX.
3651 *) Support for fixed DH ciphersuite client authentication: where both
3652 server and client use DH certificates with common parameters.
3655 *) Support for fixed DH ciphersuites: those requiring DH server
3659 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
3661 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
3662 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
3663 X509_CINF_get_signature were reverted post internal team review.
3665 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
3667 *) Build fixes for the Windows and OpenVMS platforms
3668 [Matt Caswell and Richard Levitte]
3670 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
3672 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
3673 message can cause a segmentation fault in OpenSSL due to a NULL pointer
3674 dereference. This could lead to a Denial Of Service attack. Thanks to
3675 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
3679 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
3680 dtls1_buffer_record function under certain conditions. In particular this
3681 could occur if an attacker sent repeated DTLS records with the same
3682 sequence number but for the next epoch. The memory leak could be exploited
3683 by an attacker in a Denial of Service attack through memory exhaustion.
3684 Thanks to Chris Mueller for reporting this issue.
3688 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
3689 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
3690 method would be set to NULL which could later result in a NULL pointer
3691 dereference. Thanks to Frank Schmirler for reporting this issue.
3695 *) Abort handshake if server key exchange message is omitted for ephemeral
3698 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
3699 reporting this issue.
3703 *) Remove non-export ephemeral RSA code on client and server. This code
3704 violated the TLS standard by allowing the use of temporary RSA keys in
3705 non-export ciphersuites and could be used by a server to effectively
3706 downgrade the RSA key length used to a value smaller than the server
3707 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
3708 INRIA or reporting this issue.
3712 *) Fixed issue where DH client certificates are accepted without verification.
3713 An OpenSSL server will accept a DH certificate for client authentication
3714 without the certificate verify message. This effectively allows a client to
3715 authenticate without the use of a private key. This only affects servers
3716 which trust a client certificate authority which issues certificates
3717 containing DH keys: these are extremely rare and hardly ever encountered.
3718 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
3723 *) Ensure that the session ID context of an SSL is updated when its
3724 SSL_CTX is updated via SSL_set_SSL_CTX.
3726 The session ID context is typically set from the parent SSL_CTX,
3727 and can vary with the CTX.
3730 *) Fix various certificate fingerprint issues.
3732 By using non-DER or invalid encodings outside the signed portion of a
3733 certificate the fingerprint can be changed without breaking the signature.
3734 Although no details of the signed portion of the certificate can be changed
3735 this can cause problems with some applications: e.g. those using the
3736 certificate fingerprint for blacklists.
3738 1. Reject signatures with non zero unused bits.
3740 If the BIT STRING containing the signature has non zero unused bits reject
3741 the signature. All current signature algorithms require zero unused bits.
3743 2. Check certificate algorithm consistency.
3745 Check the AlgorithmIdentifier inside TBS matches the one in the
3746 certificate signature. NB: this will result in signature failure
3747 errors for some broken certificates.
3749 Thanks to Konrad Kraszewski from Google for reporting this issue.
3751 3. Check DSA/ECDSA signatures use DER.
3753 Re-encode DSA/ECDSA signatures and compare with the original received
3754 signature. Return an error if there is a mismatch.
3756 This will reject various cases including garbage after signature
3757 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
3758 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
3759 (negative or with leading zeroes).
3761 Further analysis was conducted and fixes were developed by Stephen Henson
3762 of the OpenSSL core team.
3767 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
3768 results on some platforms, including x86_64. This bug occurs at random
3769 with a very low probability, and is not known to be exploitable in any
3770 way, though its exact impact is difficult to determine. Thanks to Pieter
3771 Wuille (Blockstream) who reported this issue and also suggested an initial
3772 fix. Further analysis was conducted by the OpenSSL development team and
3773 Adam Langley of Google. The final fix was developed by Andy Polyakov of
3774 the OpenSSL core team.
3778 *) Do not resume sessions on the server if the negotiated protocol
3779 version does not match the session's version. Resuming with a different
3780 version, while not strictly forbidden by the RFC, is of questionable
3781 sanity and breaks all known clients.
3782 [David Benjamin, Emilia Käsper]
3784 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
3785 early CCS messages during renegotiation. (Note that because
3786 renegotiation is encrypted, this early CCS was not exploitable.)
3789 *) Tighten client-side session ticket handling during renegotiation:
3790 ensure that the client only accepts a session ticket if the server sends
3791 the extension anew in the ServerHello. Previously, a TLS client would
3792 reuse the old extension state and thus accept a session ticket if one was
3793 announced in the initial ServerHello.
3795 Similarly, ensure that the client requires a session ticket if one
3796 was advertised in the ServerHello. Previously, a TLS client would
3797 ignore a missing NewSessionTicket message.
3800 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
3802 *) SRTP Memory Leak.
3804 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
3805 sends a carefully crafted handshake message, to cause OpenSSL to fail
3806 to free up to 64k of memory causing a memory leak. This could be
3807 exploited in a Denial Of Service attack. This issue affects OpenSSL
3808 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
3809 whether SRTP is used or configured. Implementations of OpenSSL that
3810 have been compiled with OPENSSL_NO_SRTP defined are not affected.
3812 The fix was developed by the OpenSSL team.
3816 *) Session Ticket Memory Leak.
3818 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
3819 integrity of that ticket is first verified. In the event of a session
3820 ticket integrity check failing, OpenSSL will fail to free memory
3821 causing a memory leak. By sending a large number of invalid session
3822 tickets an attacker could exploit this issue in a Denial Of Service
3827 *) Build option no-ssl3 is incomplete.
3829 When OpenSSL is configured with "no-ssl3" as a build option, servers
3830 could accept and complete a SSL 3.0 handshake, and clients could be
3831 configured to send them.
3833 [Akamai and the OpenSSL team]
3835 *) Add support for TLS_FALLBACK_SCSV.
3836 Client applications doing fallback retries should call
3837 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
3839 [Adam Langley, Bodo Moeller]
3841 *) Add additional DigestInfo checks.
3843 Re-encode DigestInto in DER and check against the original when
3844 verifying RSA signature: this will reject any improperly encoded
3845 DigestInfo structures.
3847 Note: this is a precautionary measure and no attacks are currently known.
3851 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
3853 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
3854 SRP code can be overrun an internal buffer. Add sanity check that
3855 g, A, B < N to SRP code.
3857 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
3858 Group for discovering this issue.
3862 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
3863 TLS 1.0 instead of higher protocol versions when the ClientHello message
3864 is badly fragmented. This allows a man-in-the-middle attacker to force a
3865 downgrade to TLS 1.0 even if both the server and the client support a
3866 higher protocol version, by modifying the client's TLS records.
3868 Thanks to David Benjamin and Adam Langley (Google) for discovering and
3869 researching this issue.
3873 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
3874 to a denial of service attack. A malicious server can crash the client
3875 with a null pointer dereference (read) by specifying an anonymous (EC)DH
3876 ciphersuite and sending carefully crafted handshake messages.
3878 Thanks to Felix Gröbert (Google) for discovering and researching this
3883 *) By sending carefully crafted DTLS packets an attacker could cause openssl
3884 to leak memory. This can be exploited through a Denial of Service attack.
3885 Thanks to Adam Langley for discovering and researching this issue.
3889 *) An attacker can force openssl to consume large amounts of memory whilst
3890 processing DTLS handshake messages. This can be exploited through a
3891 Denial of Service attack.
3892 Thanks to Adam Langley for discovering and researching this issue.
3896 *) An attacker can force an error condition which causes openssl to crash
3897 whilst processing DTLS packets due to memory being freed twice. This
3898 can be exploited through a Denial of Service attack.
3899 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
3904 *) If a multithreaded client connects to a malicious server using a resumed
3905 session and the server sends an ec point format extension it could write
3906 up to 255 bytes to freed memory.
3908 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
3913 *) A malicious server can crash an OpenSSL client with a null pointer
3914 dereference (read) by specifying an SRP ciphersuite even though it was not
3915 properly negotiated with the client. This can be exploited through a
3916 Denial of Service attack.
3918 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
3919 discovering and researching this issue.
3923 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
3924 X509_name_oneline, X509_name_print_ex et al. to leak some information
3925 from the stack. Applications may be affected if they echo pretty printing
3926 output to the attacker.
3928 Thanks to Ivan Fratric (Google) for discovering this issue.
3930 [Emilia Käsper, and Steve Henson]
3932 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3933 for corner cases. (Certain input points at infinity could lead to
3934 bogus results, with non-infinity inputs mapped to infinity too.)
3937 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
3939 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
3940 handshake can force the use of weak keying material in OpenSSL
3941 SSL/TLS clients and servers.
3943 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
3944 researching this issue. (CVE-2014-0224)
3945 [KIKUCHI Masashi, Steve Henson]
3947 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
3948 OpenSSL DTLS client the code can be made to recurse eventually crashing
3951 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
3953 [Imre Rad, Steve Henson]
3955 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
3956 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
3957 client or server. This is potentially exploitable to run arbitrary
3958 code on a vulnerable client or server.
3960 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
3961 [Jüri Aedla, Steve Henson]
3963 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
3964 are subject to a denial of service attack.
3966 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
3967 this issue. (CVE-2014-3470)
3968 [Felix Gröbert, Ivan Fratric, Steve Henson]
3970 *) Harmonize version and its documentation. -f flag is used to display
3972 [mancha <mancha1@zoho.com>]
3974 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
3975 in i2d_ECPrivateKey.
3976 [mancha <mancha1@zoho.com>]
3978 *) Fix some double frees. These are not thought to be exploitable.
3979 [mancha <mancha1@zoho.com>]
3981 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
3983 *) A missing bounds check in the handling of the TLS heartbeat extension
3984 can be used to reveal up to 64k of memory to a connected client or
3987 Thanks for Neel Mehta of Google Security for discovering this bug and to
3988 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
3989 preparing the fix (CVE-2014-0160)
3990 [Adam Langley, Bodo Moeller]
3992 *) Fix for the attack described in the paper "Recovering OpenSSL
3993 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
3994 by Yuval Yarom and Naomi Benger. Details can be obtained from:
3995 http://eprint.iacr.org/2014/140
3997 Thanks to Yuval Yarom and Naomi Benger for discovering this
3998 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
3999 [Yuval Yarom and Naomi Benger]
4001 *) TLS pad extension: draft-agl-tls-padding-03
4003 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
4004 TLS client Hello record length value would otherwise be > 255 and
4005 less that 512 pad with a dummy extension containing zeroes so it
4006 is at least 512 bytes long.
4008 [Adam Langley, Steve Henson]
4010 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
4012 *) Fix for TLS record tampering bug. A carefully crafted invalid
4013 handshake could crash OpenSSL with a NULL pointer exception.
4014 Thanks to Anton Johansson for reporting this issues.
4017 *) Keep original DTLS digest and encryption contexts in retransmission
4018 structures so we can use the previous session parameters if they need
4019 to be resent. (CVE-2013-6450)
4022 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
4023 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
4024 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
4025 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
4026 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
4027 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
4028 [Rob Stradling, Adam Langley]
4030 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
4032 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
4033 supporting platforms or when small records were transferred.
4034 [Andy Polyakov, Steve Henson]
4036 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
4038 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
4040 This addresses the flaw in CBC record processing discovered by
4041 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
4042 at: http://www.isg.rhul.ac.uk/tls/
4044 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
4045 Security Group at Royal Holloway, University of London
4046 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
4047 Emilia Käsper for the initial patch.
4049 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
4051 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
4052 ciphersuites which can be exploited in a denial of service attack.
4053 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
4054 and detecting this bug and to Wolfgang Ettlinger
4055 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
4059 *) Return an error when checking OCSP signatures when key is NULL.
4060 This fixes a DoS attack. (CVE-2013-0166)
4063 *) Make openssl verify return errors.
4064 [Chris Palmer <palmer@google.com> and Ben Laurie]
4066 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
4067 the right response is stapled. Also change SSL_get_certificate()
4068 so it returns the certificate actually sent.
4069 See http://rt.openssl.org/Ticket/Display.html?id=2836.
4070 [Rob Stradling <rob.stradling@comodo.com>]
4072 *) Fix possible deadlock when decoding public keys.
4075 *) Don't use TLS 1.0 record version number in initial client hello
4079 Changes between 1.0.1b and 1.0.1c [10 May 2012]
4081 *) Sanity check record length before skipping explicit IV in TLS
4082 1.2, 1.1 and DTLS to fix DoS attack.
4084 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
4085 fuzzing as a service testing platform.
4089 *) Initialise tkeylen properly when encrypting CMS messages.
4090 Thanks to Solar Designer of Openwall for reporting this issue.
4093 *) In FIPS mode don't try to use composite ciphers as they are not
4097 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
4099 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
4100 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
4101 mean any application compiled against OpenSSL 1.0.0 headers setting
4102 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
4103 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
4104 0x10000000L Any application which was previously compiled against
4105 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
4106 will need to be recompiled as a result. Letting be results in
4107 inability to disable specifically TLS 1.1 and in client context,
4108 in unlike event, limit maximum offered version to TLS 1.0 [see below].
4111 *) In order to ensure interoperability SSL_OP_NO_protocolX does not
4112 disable just protocol X, but all protocols above X *if* there are
4113 protocols *below* X still enabled. In more practical terms it means
4114 that if application wants to disable TLS1.0 in favor of TLS1.1 and
4115 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
4116 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
4120 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
4122 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
4123 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
4124 in CRYPTO_realloc_clean.
4126 Thanks to Tavis Ormandy, Google Security Team, for discovering this
4127 issue and to Adam Langley <agl@chromium.org> for fixing it.
4129 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
4131 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
4134 *) Workarounds for some broken servers that "hang" if a client hello
4135 record length exceeds 255 bytes.
4137 1. Do not use record version number > TLS 1.0 in initial client
4138 hello: some (but not all) hanging servers will now work.
4139 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
4140 the number of ciphers sent in the client hello. This should be
4141 set to an even number, such as 50, for example by passing:
4142 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
4143 Most broken servers should now work.
4144 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
4145 TLS 1.2 client support entirely.
4148 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
4151 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
4153 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
4154 STRING form instead of a DigestInfo.
4157 *) The format used for MDC2 RSA signatures is inconsistent between EVP
4158 and the RSA_sign/RSA_verify functions. This was made more apparent when
4159 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
4160 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
4161 the correct format in RSA_verify so both forms transparently work.
4164 *) Some servers which support TLS 1.0 can choke if we initially indicate
4165 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
4166 encrypted premaster secret. As a workaround use the maximum permitted
4167 client version in client hello, this should keep such servers happy
4168 and still work with previous versions of OpenSSL.
4171 *) Add support for TLS/DTLS heartbeats.
4172 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4174 *) Add support for SCTP.
4175 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4177 *) Improved PRNG seeding for VOS.
4178 [Paul Green <Paul.Green@stratus.com>]
4180 *) Extensive assembler packs updates, most notably:
4182 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
4183 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
4184 - x86_64: bit-sliced AES implementation;
4185 - ARM: NEON support, contemporary platforms optimizations;
4186 - s390x: z196 support;
4187 - *: GHASH and GF(2^m) multiplication implementations;
4191 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
4192 (removal of unnecessary code)
4193 [Peter Sylvester <peter.sylvester@edelweb.fr>]
4195 *) Add TLS key material exporter from RFC 5705.
4198 *) Add DTLS-SRTP negotiation from RFC 5764.
4201 *) Add Next Protocol Negotiation,
4202 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
4203 disabled with a no-npn flag to config or Configure. Code donated
4205 [Adam Langley <agl@google.com> and Ben Laurie]
4207 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
4208 NIST-P256, NIST-P521, with constant-time single point multiplication on
4209 typical inputs. Compiler support for the nonstandard type __uint128_t is
4210 required to use this (present in gcc 4.4 and later, for 64-bit builds).
4211 Code made available under Apache License version 2.0.
4213 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
4214 line to include this in your build of OpenSSL, and run "make depend" (or
4215 "make update"). This enables the following EC_METHODs:
4217 EC_GFp_nistp224_method()
4218 EC_GFp_nistp256_method()
4219 EC_GFp_nistp521_method()
4221 EC_GROUP_new_by_curve_name() will automatically use these (while
4222 EC_GROUP_new_curve_GFp() currently prefers the more flexible
4224 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
4226 *) Use type ossl_ssize_t instead of ssize_t which isn't available on
4227 all platforms. Move ssize_t definition from e_os.h to the public
4228 header file e_os2.h as it now appears in public header file cms.h
4231 *) New -sigopt option to the ca, req and x509 utilities. Additional
4232 signature parameters can be passed using this option and in
4236 *) Add RSA PSS signing function. This will generate and set the
4237 appropriate AlgorithmIdentifiers for PSS based on those in the
4238 corresponding EVP_MD_CTX structure. No application support yet.
4241 *) Support for companion algorithm specific ASN1 signing routines.
4242 New function ASN1_item_sign_ctx() signs a pre-initialised
4243 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
4244 the appropriate parameters.
4247 *) Add new algorithm specific ASN1 verification initialisation function
4248 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
4249 handling will be the same no matter what EVP_PKEY_METHOD is used.
4250 Add a PSS handler to support verification of PSS signatures: checked
4251 against a number of sample certificates.
4254 *) Add signature printing for PSS. Add PSS OIDs.
4255 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
4257 *) Add algorithm specific signature printing. An individual ASN1 method
4258 can now print out signatures instead of the standard hex dump.
4260 More complex signatures (e.g. PSS) can print out more meaningful
4261 information. Include DSA version that prints out the signature
4265 *) Password based recipient info support for CMS library: implementing
4269 *) Split password based encryption into PBES2 and PBKDF2 functions. This
4270 neatly separates the code into cipher and PBE sections and is required
4271 for some algorithms that split PBES2 into separate pieces (such as
4272 password based CMS).
4275 *) Session-handling fixes:
4276 - Fix handling of connections that are resuming with a session ID,
4277 but also support Session Tickets.
4278 - Fix a bug that suppressed issuing of a new ticket if the client
4279 presented a ticket with an expired session.
4280 - Try to set the ticket lifetime hint to something reasonable.
4281 - Make tickets shorter by excluding irrelevant information.
4282 - On the client side, don't ignore renewed tickets.
4283 [Adam Langley, Bodo Moeller (Google)]
4285 *) Fix PSK session representation.
4288 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
4290 This work was sponsored by Intel.
4293 *) Add GCM support to TLS library. Some custom code is needed to split
4294 the IV between the fixed (from PRF) and explicit (from TLS record)
4295 portions. This adds all GCM ciphersuites supported by RFC5288 and
4296 RFC5289. Generalise some AES* cipherstrings to include GCM and
4297 add a special AESGCM string for GCM only.
4300 *) Expand range of ctrls for AES GCM. Permit setting invocation
4301 field on decrypt and retrieval of invocation field only on encrypt.
4304 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
4305 As required by RFC5289 these ciphersuites cannot be used if for
4306 versions of TLS earlier than 1.2.
4309 *) For FIPS capable OpenSSL interpret a NULL default public key method
4310 as unset and return the appropriate default but do *not* set the default.
4311 This means we can return the appropriate method in applications that
4312 switch between FIPS and non-FIPS modes.
4315 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
4316 ENGINE is used then we cannot handle that in the FIPS module so we
4317 keep original code iff non-FIPS operations are allowed.
4320 *) Add -attime option to openssl utilities.
4321 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
4323 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
4326 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
4327 FIPS EC methods unconditionally for now.
4330 *) New build option no-ec2m to disable characteristic 2 code.
4333 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
4334 all cases can be covered as some introduce binary incompatibilities.
4337 *) Redirect RSA operations to FIPS module including keygen,
4338 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
4341 *) Add similar low level API blocking to ciphers.
4344 *) Low level digest APIs are not approved in FIPS mode: any attempt
4345 to use these will cause a fatal error. Applications that *really* want
4346 to use them can use the private_* version instead.
4349 *) Redirect cipher operations to FIPS module for FIPS builds.
4352 *) Redirect digest operations to FIPS module for FIPS builds.
4355 *) Update build system to add "fips" flag which will link in fipscanister.o
4356 for static and shared library builds embedding a signature if needed.
4359 *) Output TLS supported curves in preference order instead of numerical
4360 order. This is currently hardcoded for the highest order curves first.
4361 This should be configurable so applications can judge speed vs strength.
4364 *) Add TLS v1.2 server support for client authentication.
4367 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
4371 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
4372 FIPS modules versions.
4375 *) Add TLS v1.2 client side support for client authentication. Keep cache
4376 of handshake records longer as we don't know the hash algorithm to use
4377 until after the certificate request message is received.
4380 *) Initial TLS v1.2 client support. Add a default signature algorithms
4381 extension including all the algorithms we support. Parse new signature
4382 format in client key exchange. Relax some ECC signing restrictions for
4383 TLS v1.2 as indicated in RFC5246.
4386 *) Add server support for TLS v1.2 signature algorithms extension. Switch
4387 to new signature format when needed using client digest preference.
4388 All server ciphersuites should now work correctly in TLS v1.2. No client
4389 support yet and no support for client certificates.
4392 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
4393 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
4394 ciphersuites. At present only RSA key exchange ciphersuites work with
4395 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
4396 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
4397 and version checking.
4400 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
4401 with this defined it will not be affected by any changes to ssl internal
4402 structures. Add several utility functions to allow openssl application
4403 to work with OPENSSL_NO_SSL_INTERN defined.
4406 *) A long standing patch to add support for SRP from EdelWeb (Peter
4407 Sylvester and Christophe Renou) was integrated.
4408 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
4409 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
4412 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
4415 *) Permit abbreviated handshakes when renegotiating using the function
4416 SSL_renegotiate_abbreviated().
4417 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4419 *) Add call to ENGINE_register_all_complete() to
4420 ENGINE_load_builtin_engines(), so some implementations get used
4421 automatically instead of needing explicit application support.
4424 *) Add support for TLS key exporter as described in RFC5705.
4425 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
4427 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
4428 a few changes are required:
4430 Add SSL_OP_NO_TLSv1_1 flag.
4431 Add TLSv1_1 methods.
4432 Update version checking logic to handle version 1.1.
4433 Add explicit IV handling (ported from DTLS code).
4434 Add command line options to s_client/s_server.
4437 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
4439 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
4440 in CMS and PKCS7 code. When RSA decryption fails use a random key for
4441 content decryption and always return the same error. Note: this attack
4442 needs on average 2^20 messages so it only affects automated senders. The
4443 old behaviour can be re-enabled in the CMS code by setting the
4444 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
4445 an MMA defence is not necessary.
4446 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
4447 this issue. (CVE-2012-0884)
4450 *) Fix CVE-2011-4619: make sure we really are receiving a
4451 client hello before rejecting multiple SGC restarts. Thanks to
4452 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
4455 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
4457 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
4458 Thanks to Antonio Martin, Enterprise Secure Access Research and
4459 Development, Cisco Systems, Inc. for discovering this bug and
4460 preparing a fix. (CVE-2012-0050)
4463 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
4465 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
4466 of the Vaudenay padding oracle attack on CBC mode encryption
4467 which enables an efficient plaintext recovery attack against
4468 the OpenSSL implementation of DTLS. Their attack exploits timing
4469 differences arising during decryption processing. A research
4470 paper describing this attack can be found at:
4471 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
4472 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
4473 Security Group at Royal Holloway, University of London
4474 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
4475 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
4476 for preparing the fix. (CVE-2011-4108)
4477 [Robin Seggelmann, Michael Tuexen]
4479 *) Clear bytes used for block padding of SSL 3.0 records.
4481 [Adam Langley (Google)]
4483 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
4484 Kadianakis <desnacked@gmail.com> for discovering this issue and
4485 Adam Langley for preparing the fix. (CVE-2011-4619)
4486 [Adam Langley (Google)]
4488 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
4489 [Andrey Kulikov <amdeich@gmail.com>]
4491 *) Prevent malformed RFC3779 data triggering an assertion failure.
4492 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
4493 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
4494 [Rob Austein <sra@hactrn.net>]
4496 *) Improved PRNG seeding for VOS.
4497 [Paul Green <Paul.Green@stratus.com>]
4499 *) Fix ssl_ciph.c set-up race.
4500 [Adam Langley (Google)]
4502 *) Fix spurious failures in ecdsatest.c.
4503 [Emilia Käsper (Google)]
4505 *) Fix the BIO_f_buffer() implementation (which was mixing different
4506 interpretations of the '..._len' fields).
4507 [Adam Langley (Google)]
4509 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
4510 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
4511 threads won't reuse the same blinding coefficients.
4513 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
4514 lock to call BN_BLINDING_invert_ex, and avoids one use of
4515 BN_BLINDING_update for each BN_BLINDING structure (previously,
4516 the last update always remained unused).
4517 [Emilia Käsper (Google)]
4519 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
4520 [Bob Buckholz (Google)]
4522 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
4524 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
4525 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
4526 [Kaspar Brand <ossl@velox.ch>]
4528 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
4529 for multi-threaded use of ECDH. (CVE-2011-3210)
4530 [Adam Langley (Google)]
4532 *) Fix x509_name_ex_d2i memory leak on bad inputs.
4535 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
4536 signature public key algorithm by using OID xref utilities instead.
4537 Before this you could only use some ECC ciphersuites with SHA1 only.
4540 *) Add protection against ECDSA timing attacks as mentioned in the paper
4541 by Billy Bob Brumley and Nicola Tuveri, see:
4543 http://eprint.iacr.org/2011/232.pdf
4545 [Billy Bob Brumley and Nicola Tuveri]
4547 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
4549 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
4550 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
4552 *) Fix bug in string printing code: if *any* escaping is enabled we must
4553 escape the escape character (backslash) or the resulting string is
4557 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
4559 *) Disable code workaround for ancient and obsolete Netscape browsers
4560 and servers: an attacker can use it in a ciphersuite downgrade attack.
4561 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
4564 *) Fixed J-PAKE implementation error, originally discovered by
4565 Sebastien Martini, further info and confirmation from Stefan
4566 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
4569 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
4571 *) Fix extension code to avoid race conditions which can result in a buffer
4572 overrun vulnerability: resumed sessions must not be modified as they can
4573 be shared by multiple threads. CVE-2010-3864
4576 *) Fix WIN32 build system to correctly link an ENGINE directory into
4580 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
4582 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
4584 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
4586 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
4588 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
4589 context. The operation can be customised via the ctrl mechanism in
4590 case ENGINEs want to include additional functionality.
4593 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
4596 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
4597 output hashes compatible with older versions of OpenSSL.
4598 [Willy Weisz <weisz@vcpc.univie.ac.at>]
4600 *) Fix compression algorithm handling: if resuming a session use the
4601 compression algorithm of the resumed session instead of determining
4602 it from client hello again. Don't allow server to change algorithm.
4605 *) Add load_crls() function to apps tidying load_certs() too. Add option
4606 to verify utility to allow additional CRLs to be included.
4609 *) Update OCSP request code to permit adding custom headers to the request:
4610 some responders need this.
4613 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
4615 [Julia Lawall <julia@diku.dk>]
4617 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
4618 needlessly dereferenced structures, used obsolete functions and
4619 didn't handle all updated verify codes correctly.
4622 *) Disable MD2 in the default configuration.
4625 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
4626 indicate the initial BIO being pushed or popped. This makes it possible
4627 to determine whether the BIO is the one explicitly called or as a result
4628 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
4629 it handles reference counts correctly and doesn't zero out the I/O bio
4630 when it is not being explicitly popped. WARNING: applications which
4631 included workarounds for the old buggy behaviour will need to be modified
4632 or they could free up already freed BIOs.
4635 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
4636 renaming to all platforms (within the 0.9.8 branch, this was
4637 done conditionally on Netware platforms to avoid a name clash).
4638 [Guenter <lists@gknw.net>]
4640 *) Add ECDHE and PSK support to DTLS.
4641 [Michael Tuexen <tuexen@fh-muenster.de>]
4643 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
4647 *) Add "missing" function EVP_MD_flags() (without this the only way to
4648 retrieve a digest flags is by accessing the structure directly. Update
4649 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
4650 or cipher is registered as in the "from" argument. Print out all
4651 registered digests in the dgst usage message instead of manually
4652 attempting to work them out.
4655 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
4656 this allows the use of compression and extensions. Change default cipher
4657 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
4658 by default unless an application cipher string requests it.
4661 *) Alter match criteria in PKCS12_parse(). It used to try to use local
4662 key ids to find matching certificates and keys but some PKCS#12 files
4663 don't follow the (somewhat unwritten) rules and this strategy fails.
4664 Now just gather all certificates together and the first private key
4665 then look for the first certificate that matches the key.
4668 *) Support use of registered digest and cipher names for dgst and cipher
4669 commands instead of having to add each one as a special case. So now
4676 openssl dgst -sha256 foo
4678 and this works for ENGINE based algorithms too.
4682 *) Update Gost ENGINE to support parameter files.
4683 [Victor B. Wagner <vitus@cryptocom.ru>]
4685 *) Support GeneralizedTime in ca utility.
4686 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
4688 *) Enhance the hash format used for certificate directory links. The new
4689 form uses the canonical encoding (meaning equivalent names will work
4690 even if they aren't identical) and uses SHA1 instead of MD5. This form
4691 is incompatible with the older format and as a result c_rehash should
4692 be used to rebuild symbolic links.
4695 *) Make PKCS#8 the default write format for private keys, replacing the
4696 traditional format. This form is standardised, more secure and doesn't
4697 include an implicit MD5 dependency.
4700 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
4701 committed to OpenSSL should pass this lot as a minimum.
4704 *) Add session ticket override functionality for use by EAP-FAST.
4705 [Jouni Malinen <j@w1.fi>]
4707 *) Modify HMAC functions to return a value. Since these can be implemented
4708 in an ENGINE errors can occur.
4711 *) Type-checked OBJ_bsearch_ex.
4714 *) Type-checked OBJ_bsearch. Also some constification necessitated
4715 by type-checking. Still to come: TXT_DB, bsearch(?),
4716 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
4720 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
4721 seconds to a tm structure directly, instead of going through OS
4722 specific date routines. This avoids any issues with OS routines such
4723 as the year 2038 bug. New *_adj() functions for ASN1 time structures
4724 and X509_time_adj_ex() to cover the extended range. The existing
4725 X509_time_adj() is still usable and will no longer have any date issues.
4728 *) Delta CRL support. New use deltas option which will attempt to locate
4729 and search any appropriate delta CRLs available.
4731 This work was sponsored by Google.
4734 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
4735 code and add additional score elements. Validate alternate CRL paths
4736 as part of the CRL checking and indicate a new error "CRL path validation
4737 error" in this case. Applications wanting additional details can use
4738 the verify callback and check the new "parent" field. If this is not
4739 NULL CRL path validation is taking place. Existing applications won't
4740 see this because it requires extended CRL support which is off by
4743 This work was sponsored by Google.
4746 *) Support for freshest CRL extension.
4748 This work was sponsored by Google.
4751 *) Initial indirect CRL support. Currently only supported in the CRLs
4752 passed directly and not via lookup. Process certificate issuer
4753 CRL entry extension and lookup CRL entries by bother issuer name
4754 and serial number. Check and process CRL issuer entry in IDP extension.
4756 This work was sponsored by Google.
4759 *) Add support for distinct certificate and CRL paths. The CRL issuer
4760 certificate is validated separately in this case. Only enabled if
4761 an extended CRL support flag is set: this flag will enable additional
4762 CRL functionality in future.
4764 This work was sponsored by Google.
4767 *) Add support for policy mappings extension.
4769 This work was sponsored by Google.
4772 *) Fixes to pathlength constraint, self issued certificate handling,
4773 policy processing to align with RFC3280 and PKITS tests.
4775 This work was sponsored by Google.
4778 *) Support for name constraints certificate extension. DN, email, DNS
4779 and URI types are currently supported.
4781 This work was sponsored by Google.
4784 *) To cater for systems that provide a pointer-based thread ID rather
4785 than numeric, deprecate the current numeric thread ID mechanism and
4786 replace it with a structure and associated callback type. This
4787 mechanism allows a numeric "hash" to be extracted from a thread ID in
4788 either case, and on platforms where pointers are larger than 'long',
4789 mixing is done to help ensure the numeric 'hash' is usable even if it
4790 can't be guaranteed unique. The default mechanism is to use "&errno"
4791 as a pointer-based thread ID to distinguish between threads.
4793 Applications that want to provide their own thread IDs should now use
4794 CRYPTO_THREADID_set_callback() to register a callback that will call
4795 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
4797 Note that ERR_remove_state() is now deprecated, because it is tied
4798 to the assumption that thread IDs are numeric. ERR_remove_state(0)
4799 to free the current thread's error state should be replaced by
4800 ERR_remove_thread_state(NULL).
4802 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
4803 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
4804 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
4805 application was previously providing a numeric thread callback that
4806 was inappropriate for distinguishing threads, then uniqueness might
4807 have been obtained with &errno that happened immediately in the
4808 intermediate development versions of OpenSSL; this is no longer the
4809 case, the numeric thread callback will now override the automatic use
4811 [Geoff Thorpe, with help from Bodo Moeller]
4813 *) Initial support for different CRL issuing certificates. This covers a
4814 simple case where the self issued certificates in the chain exist and
4815 the real CRL issuer is higher in the existing chain.
4817 This work was sponsored by Google.
4820 *) Removed effectively defunct crypto/store from the build.
4823 *) Revamp of STACK to provide stronger type-checking. Still to come:
4824 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
4825 ASN1_STRING, CONF_VALUE.
4828 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
4829 RAM on SSL connections. This option can save about 34k per idle SSL.
4832 *) Revamp of LHASH to provide stronger type-checking. Still to come:
4833 STACK, TXT_DB, bsearch, qsort.
4836 *) Initial support for Cryptographic Message Syntax (aka CMS) based
4837 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
4838 support for data, signedData, compressedData, digestedData and
4839 encryptedData, envelopedData types included. Scripts to check against
4840 RFC4134 examples draft and interop and consistency checks of many
4841 content types and variants.
4844 *) Add options to enc utility to support use of zlib compression BIO.
4847 *) Extend mk1mf to support importing of options and assembly language
4848 files from Configure script, currently only included in VC-WIN32.
4849 The assembly language rules can now optionally generate the source
4850 files from the associated perl scripts.
4853 *) Implement remaining functionality needed to support GOST ciphersuites.
4854 Interop testing has been performed using CryptoPro implementations.
4855 [Victor B. Wagner <vitus@cryptocom.ru>]
4857 *) s390x assembler pack.
4860 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
4864 *) Implement Opaque PRF Input TLS extension as specified in
4865 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
4866 official specification yet and no extension type assignment by
4867 IANA exists, this extension (for now) will have to be explicitly
4868 enabled when building OpenSSL by providing the extension number
4869 to use. For example, specify an option
4871 -DTLSEXT_TYPE_opaque_prf_input=0x9527
4873 to the "config" or "Configure" script to enable the extension,
4874 assuming extension number 0x9527 (which is a completely arbitrary
4875 and unofficial assignment based on the MD5 hash of the Internet
4876 Draft). Note that by doing so, you potentially lose
4877 interoperability with other TLS implementations since these might
4878 be using the same extension number for other purposes.
4880 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
4881 opaque PRF input value to use in the handshake. This will create
4882 an internal copy of the length-'len' string at 'src', and will
4883 return non-zero for success.
4885 To get more control and flexibility, provide a callback function
4888 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
4889 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
4893 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
4896 Callback function 'cb' will be called in handshakes, and is
4897 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
4898 Argument 'arg' is for application purposes (the value as given to
4899 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
4900 be provided to the callback function). The callback function
4901 has to return non-zero to report success: usually 1 to use opaque
4902 PRF input just if possible, or 2 to enforce use of the opaque PRF
4903 input. In the latter case, the library will abort the handshake
4904 if opaque PRF input is not successfully negotiated.
4906 Arguments 'peerinput' and 'len' given to the callback function
4907 will always be NULL and 0 in the case of a client. A server will
4908 see the client's opaque PRF input through these variables if
4909 available (NULL and 0 otherwise). Note that if the server
4910 provides an opaque PRF input, the length must be the same as the
4911 length of the client's opaque PRF input.
4913 Note that the callback function will only be called when creating
4914 a new session (session resumption can resume whatever was
4915 previously negotiated), and will not be called in SSL 2.0
4916 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
4917 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
4918 for applications that need to enforce opaque PRF input.
4922 *) Update ssl code to support digests other than SHA1+MD5 for handshake
4925 [Victor B. Wagner <vitus@cryptocom.ru>]
4927 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4928 RFC4507bis. The encrypted ticket format is an encrypted encoded
4929 SSL_SESSION structure, that way new session features are automatically
4932 If a client application caches session in an SSL_SESSION structure
4933 support is transparent because tickets are now stored in the encoded
4936 The SSL_CTX structure automatically generates keys for ticket
4937 protection in servers so again support should be possible
4938 with no application modification.
4940 If a client or server wishes to disable RFC4507 support then the option
4941 SSL_OP_NO_TICKET can be set.
4943 Add a TLS extension debugging callback to allow the contents of any client
4944 or server extensions to be examined.
4946 This work was sponsored by Google.
4949 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
4950 OpenSSL should now compile cleanly on gcc 4.2
4951 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
4953 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
4954 support including streaming MAC support: this is required for GOST
4955 ciphersuite support.
4956 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
4958 *) Add option -stream to use PKCS#7 streaming in smime utility. New
4959 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
4960 to output in BER and PEM format.
4963 *) Experimental support for use of HMAC via EVP_PKEY interface. This
4964 allows HMAC to be handled via the EVP_DigestSign*() interface. The
4965 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
4966 ENGINE support for HMAC keys which are unextractable. New -mac and
4967 -macopt options to dgst utility.
4970 *) New option -sigopt to dgst utility. Update dgst to use
4971 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
4972 alternative signing parameters such as X9.31 or PSS in the dgst
4976 *) Change ssl_cipher_apply_rule(), the internal function that does
4977 the work each time a ciphersuite string requests enabling
4978 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
4979 removing ("!foo+bar") a class of ciphersuites: Now it maintains
4980 the order of disabled ciphersuites such that those ciphersuites
4981 that most recently went from enabled to disabled not only stay
4982 in order with respect to each other, but also have higher priority
4983 than other disabled ciphersuites the next time ciphersuites are
4986 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
4987 the same ciphersuites as with "HIGH" alone, but in a specific
4988 order where the PSK ciphersuites come first (since they are the
4989 most recently disabled ciphersuites when "HIGH" is parsed).
4991 Also, change ssl_create_cipher_list() (using this new
4992 functionality) such that between otherwise identical
4993 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
4997 *) Change ssl_create_cipher_list() so that it automatically
4998 arranges the ciphersuites in reasonable order before starting
4999 to process the rule string. Thus, the definition for "DEFAULT"
5000 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
5001 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
5002 This makes it much easier to arrive at a reasonable default order
5003 in applications for which anonymous ciphers are OK (meaning
5004 that you can't actually use DEFAULT).
5005 [Bodo Moeller; suggested by Victor Duchovni]
5007 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
5008 processing) into multiple integers instead of setting
5009 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
5010 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
5011 (These masks as well as the individual bit definitions are hidden
5012 away into the non-exported interface ssl/ssl_locl.h, so this
5013 change to the definition of the SSL_CIPHER structure shouldn't
5014 affect applications.) This give us more bits for each of these
5015 categories, so there is no longer a need to coagulate AES128 and
5016 AES256 into a single algorithm bit, and to coagulate Camellia128
5017 and Camellia256 into a single algorithm bit, which has led to all
5020 Thus, among other things, the kludge introduced in 0.9.7m and
5021 0.9.8e for masking out AES256 independently of AES128 or masking
5022 out Camellia256 independently of AES256 is not needed here in 0.9.9.
5024 With the change, we also introduce new ciphersuite aliases that
5025 so far were missing: "AES128", "AES256", "CAMELLIA128", and
5029 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
5030 Use the leftmost N bytes of the signature input if the input is
5031 larger than the prime q (with N being the size in bytes of q).
5034 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
5035 it yet and it is largely untested.
5038 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
5041 *) Initial incomplete changes to avoid need for function casts in OpenSSL
5042 some compilers (gcc 4.2 and later) reject their use. Safestack is
5043 reimplemented. Update ASN1 to avoid use of legacy functions.
5046 *) Win32/64 targets are linked with Winsock2.
5049 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
5050 to external functions. This can be used to increase CRL handling
5051 efficiency especially when CRLs are very large by (for example) storing
5052 the CRL revoked certificates in a database.
5055 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
5056 new CRLs added to a directory can be used. New command line option
5057 -verify_return_error to s_client and s_server. This causes real errors
5058 to be returned by the verify callback instead of carrying on no matter
5059 what. This reflects the way a "real world" verify callback would behave.
5062 *) GOST engine, supporting several GOST algorithms and public key formats.
5063 Kindly donated by Cryptocom.
5066 *) Partial support for Issuing Distribution Point CRL extension. CRLs
5067 partitioned by DP are handled but no indirect CRL or reason partitioning
5068 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
5069 selected via a scoring technique which handles IDP and AKID in CRLs.
5072 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
5073 will ultimately be used for all verify operations: this will remove the
5074 X509_STORE dependency on certificate verification and allow alternative
5075 lookup methods. X509_STORE based implementations of these two callbacks.
5078 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
5079 Modify get_crl() to find a valid (unexpired) CRL if possible.
5082 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
5083 this would be called X509_CRL_cmp() but that name is already used by
5084 a function that just compares CRL issuer names. Cache several CRL
5085 extensions in X509_CRL structure and cache CRLDP in X509.
5088 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
5089 this maps equivalent X509_NAME structures into a consistent structure.
5090 Name comparison can then be performed rapidly using memcmp().
5093 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
5097 *) Allow digests to supply their own micalg string for S/MIME type using
5098 the ctrl EVP_MD_CTRL_MICALG.
5101 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
5102 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
5103 ctrl. It can then customise the structure before and/or after signing
5107 *) New function OBJ_add_sigid() to allow application defined signature OIDs
5108 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
5109 to free up any added signature OIDs.
5112 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
5113 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
5114 digest and cipher tables. New options added to openssl utility:
5115 list-message-digest-algorithms and list-cipher-algorithms.
5118 *) Change the array representation of binary polynomials: the list
5119 of degrees of non-zero coefficients is now terminated with -1.
5120 Previously it was terminated with 0, which was also part of the
5121 value; thus, the array representation was not applicable to
5122 polynomials where t^0 has coefficient zero. This change makes
5123 the array representation useful in a more general context.
5126 *) Various modifications and fixes to SSL/TLS cipher string
5127 handling. For ECC, the code now distinguishes between fixed ECDH
5128 with RSA certificates on the one hand and with ECDSA certificates
5129 on the other hand, since these are separate ciphersuites. The
5130 unused code for Fortezza ciphersuites has been removed.
5132 For consistency with EDH, ephemeral ECDH is now called "EECDH"
5133 (not "ECDHE"). For consistency with the code for DH
5134 certificates, use of ECDH certificates is now considered ECDH
5135 authentication, not RSA or ECDSA authentication (the latter is
5136 merely the CA's signing algorithm and not actively used in the
5139 The temporary ciphersuite alias "ECCdraft" is no longer
5140 available, and ECC ciphersuites are no longer excluded from "ALL"
5141 and "DEFAULT". The following aliases now exist for RFC 4492
5142 ciphersuites, most of these by analogy with the DH case:
5144 kECDHr - ECDH cert, signed with RSA
5145 kECDHe - ECDH cert, signed with ECDSA
5146 kECDH - ECDH cert (signed with either RSA or ECDSA)
5147 kEECDH - ephemeral ECDH
5148 ECDH - ECDH cert or ephemeral ECDH
5154 AECDH - anonymous ECDH
5155 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
5159 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
5160 Use correct micalg parameters depending on digest(s) in signed message.
5163 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
5164 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
5167 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
5168 an engine to register a method. Add ENGINE lookups for methods and
5169 functional reference processing.
5172 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
5173 EVP_{Sign,Verify}* which allow an application to customise the signature
5177 *) New -resign option to smime utility. This adds one or more signers
5178 to an existing PKCS#7 signedData structure. Also -md option to use an
5179 alternative message digest algorithm for signing.
5182 *) Tidy up PKCS#7 routines and add new functions to make it easier to
5183 create PKCS7 structures containing multiple signers. Update smime
5184 application to support multiple signers.
5187 *) New -macalg option to pkcs12 utility to allow setting of an alternative
5191 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
5192 Reorganize PBE internals to lookup from a static table using NIDs,
5193 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
5194 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
5195 PRF which will be automatically used with PBES2.
5198 *) Replace the algorithm specific calls to generate keys in "req" with the
5202 *) Update PKCS#7 enveloped data routines to use new API. This is now
5203 supported by any public key method supporting the encrypt operation. A
5204 ctrl is added to allow the public key algorithm to examine or modify
5205 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
5209 *) Add a ctrl to asn1 method to allow a public key algorithm to express
5210 a default digest type to use. In most cases this will be SHA1 but some
5211 algorithms (such as GOST) need to specify an alternative digest. The
5212 return value indicates how strong the preference is 1 means optional and
5213 2 is mandatory (that is it is the only supported type). Modify
5214 ASN1_item_sign() to accept a NULL digest argument to indicate it should
5215 use the default md. Update openssl utilities to use the default digest
5216 type for signing if it is not explicitly indicated.
5219 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
5220 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
5221 signing method from the key type. This effectively removes the link
5222 between digests and public key types.
5225 *) Add an OID cross reference table and utility functions. Its purpose is to
5226 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
5227 rsaEncryption. This will allow some of the algorithm specific hackery
5228 needed to use the correct OID to be removed.
5231 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
5232 structures for PKCS7_sign(). They are now set up by the relevant public
5236 *) Add provisional EC pkey method with support for ECDSA and ECDH.
5239 *) Add support for key derivation (agreement) in the API, DH method and
5243 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
5244 public and private key formats. As a side effect these add additional
5245 command line functionality not previously available: DSA signatures can be
5246 generated and verified using pkeyutl and DH key support and generation in
5251 [Oliver Tappe <zooey@hirschkaefer.de>]
5253 *) New make target "install_html_docs" installs HTML renditions of the
5255 [Oliver Tappe <zooey@hirschkaefer.de>]
5257 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
5258 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
5259 support key and parameter generation and add initial key generation
5260 functionality for RSA.
5263 *) Add functions for main EVP_PKEY_method operations. The undocumented
5264 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
5265 EVP_PKEY_{encrypt,decrypt}_old.
5268 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
5269 key API, doesn't do much yet.
5272 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
5273 public key algorithms. New option to openssl utility:
5274 "list-public-key-algorithms" to print out info.
5277 *) Implement the Supported Elliptic Curves Extension for
5278 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5281 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
5282 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
5285 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
5286 utilities such as rsa, dsa, dsaparam etc except they process any key
5290 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
5291 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
5292 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
5296 *) Initial support for pluggable public key ASN1.
5297 De-spaghettify the public key ASN1 handling. Move public and private
5298 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
5299 algorithm specific handling to a single module within the relevant
5300 algorithm directory. Add functions to allow (near) opaque processing
5301 of public and private key structures.
5304 *) Implement the Supported Point Formats Extension for
5305 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5308 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
5309 for the psk identity [hint] and the psk callback functions to the
5310 SSL_SESSION, SSL and SSL_CTX structure.
5313 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
5317 SSL_CTX_use_psk_identity_hint
5318 SSL_get_psk_identity_hint
5319 SSL_get_psk_identity
5320 SSL_use_psk_identity_hint
5322 [Mika Kousa and Pasi Eronen of Nokia Corporation]
5324 *) Add RFC 3161 compliant time stamp request creation, response generation
5325 and response verification functionality.
5326 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
5328 *) Add initial support for TLS extensions, specifically for the server_name
5329 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5330 have new members for a host name. The SSL data structure has an
5331 additional member SSL_CTX *initial_ctx so that new sessions can be
5332 stored in that context to allow for session resumption, even after the
5333 SSL has been switched to a new SSL_CTX in reaction to a client's
5334 server_name extension.
5336 New functions (subject to change):
5338 SSL_get_servername()
5339 SSL_get_servername_type()
5342 New CTRL codes and macros (subject to change):
5344 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5345 - SSL_CTX_set_tlsext_servername_callback()
5346 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5347 - SSL_CTX_set_tlsext_servername_arg()
5348 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5350 openssl s_client has a new '-servername ...' option.
5352 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5353 '-key2 ...', '-servername_fatal' (subject to change). This allows
5354 testing the HostName extension for a specific single host name ('-cert'
5355 and '-key' remain fallbacks for handshakes without HostName
5356 negotiation). If the unrecognized_name alert has to be sent, this by
5357 default is a warning; it becomes fatal with the '-servername_fatal'
5360 [Peter Sylvester, Remy Allais, Christophe Renou]
5362 *) Whirlpool hash implementation is added.
5365 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
5366 bn(64,32). Because of instruction set limitations it doesn't have
5367 any negative impact on performance. This was done mostly in order
5368 to make it possible to share assembler modules, such as bn_mul_mont
5369 implementations, between 32- and 64-bit builds without hassle.
5372 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
5373 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
5377 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
5378 dedicated Montgomery multiplication procedure, is introduced.
5379 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
5380 "64-bit" performance on certain 32-bit targets.
5383 *) New option SSL_OP_NO_COMP to disable use of compression selectively
5384 in SSL structures. New SSL ctrl to set maximum send fragment size.
5385 Save memory by setting the I/O buffer sizes dynamically instead of
5386 using the maximum available value.
5389 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
5390 in addition to the text details.
5393 *) Very, very preliminary EXPERIMENTAL support for printing of general
5394 ASN1 structures. This currently produces rather ugly output and doesn't
5395 handle several customised structures at all.
5398 *) Integrated support for PVK file format and some related formats such
5399 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
5400 these in the 'rsa' and 'dsa' utilities.
5403 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
5406 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
5407 place for the (very old) "NETSCAPE" format certificates which are now
5408 handled using new ASN1 code equivalents.
5411 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
5412 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
5413 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
5416 *) Modify CRL distribution points extension code to print out previously
5417 unsupported fields. Enhance extension setting code to allow setting of
5421 *) Add print and set support for Issuing Distribution Point CRL extension.
5424 *) Change 'Configure' script to enable Camellia by default.
5427 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
5429 *) When rejecting SSL/TLS records due to an incorrect version number, never
5430 update s->server with a new major version number. As of
5431 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
5432 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
5433 the previous behavior could result in a read attempt at NULL when
5434 receiving specific incorrect SSL/TLS records once record payload
5435 protection is active. (CVE-2010-0740)
5436 [Bodo Moeller, Adam Langley <agl@chromium.org>]
5438 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
5439 could be crashed if the relevant tables were not present (e.g. chrooted).
5440 [Tomas Hoger <thoger@redhat.com>]
5442 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
5444 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
5445 [Martin Olsson, Neel Mehta]
5447 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
5448 accommodate for stack sorting, always a write lock!).
5451 *) On some versions of WIN32 Heap32Next is very slow. This can cause
5452 excessive delays in the RAND_poll(): over a minute. As a workaround
5453 include a time check in the inner Heap32Next loop too.
5456 *) The code that handled flushing of data in SSL/TLS originally used the
5457 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
5458 the problem outlined in PR#1949. The fix suggested there however can
5459 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
5460 of Apache). So instead simplify the code to flush unconditionally.
5461 This should be fine since flushing with no data to flush is a no op.
5464 *) Handle TLS versions 2.0 and later properly and correctly use the
5465 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
5466 off ancient servers have a habit of sticking around for a while...
5469 *) Modify compression code so it frees up structures without using the
5470 ex_data callbacks. This works around a problem where some applications
5471 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
5472 restarting) then use compression (e.g. SSL with compression) later.
5473 This results in significant per-connection memory leaks and
5474 has caused some security issues including CVE-2008-1678 and
5478 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
5479 change when encrypting or decrypting.
5482 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
5483 connect and renegotiate with servers which do not support RI.
5484 Until RI is more widely deployed this option is enabled by default.
5487 *) Add "missing" ssl ctrls to clear options and mode.
5490 *) If client attempts to renegotiate and doesn't support RI respond with
5491 a no_renegotiation alert as required by RFC5746. Some renegotiating
5492 TLS clients will continue a connection gracefully when they receive
5493 the alert. Unfortunately OpenSSL mishandled this alert and would hang
5494 waiting for a server hello which it will never receive. Now we treat a
5495 received no_renegotiation alert as a fatal error. This is because
5496 applications requesting a renegotiation might well expect it to succeed
5497 and would have no code in place to handle the server denying it so the
5498 only safe thing to do is to terminate the connection.
5501 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
5502 peer supports secure renegotiation and 0 otherwise. Print out peer
5503 renegotiation support in s_client/s_server.
5506 *) Replace the highly broken and deprecated SPKAC certification method with
5507 the updated NID creation version. This should correctly handle UTF8.
5510 *) Implement RFC5746. Re-enable renegotiation but require the extension
5511 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
5512 turns out to be a bad idea. It has been replaced by
5513 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
5514 SSL_CTX_set_options(). This is really not recommended unless you
5515 know what you are doing.
5516 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
5518 *) Fixes to stateless session resumption handling. Use initial_ctx when
5519 issuing and attempting to decrypt tickets in case it has changed during
5520 servername handling. Use a non-zero length session ID when attempting
5521 stateless session resumption: this makes it possible to determine if
5522 a resumption has occurred immediately after receiving server hello
5523 (several places in OpenSSL subtly assume this) instead of later in
5527 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
5528 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
5529 fixes for a few places where the return code is not checked
5531 [Julia Lawall <julia@diku.dk>]
5533 *) Add --strict-warnings option to Configure script to include devteam
5534 warnings in other configurations.
5537 *) Add support for --libdir option and LIBDIR variable in makefiles. This
5538 makes it possible to install openssl libraries in locations which
5539 have names other than "lib", for example "/usr/lib64" which some
5541 [Steve Henson, based on patch from Jeremy Utley]
5543 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
5544 X690 8.9.12 and can produce some misleading textual output of OIDs.
5545 [Steve Henson, reported by Dan Kaminsky]
5547 *) Delete MD2 from algorithm tables. This follows the recommendation in
5548 several standards that it is not used in new applications due to
5549 several cryptographic weaknesses. For binary compatibility reasons
5550 the MD2 API is still compiled in by default.
5553 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
5557 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
5558 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
5560 [Guenter <lists@gknw.net>]
5562 *) Fix the server certificate chain building code to use X509_verify_cert(),
5563 it used to have an ad-hoc builder which was unable to cope with anything
5564 other than a simple chain.
5565 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
5567 *) Don't check self signed certificate signatures in X509_verify_cert()
5568 by default (a flag can override this): it just wastes time without
5569 adding any security. As a useful side effect self signed root CAs
5570 with non-FIPS digests are now usable in FIPS mode.
5573 *) In dtls1_process_out_of_seq_message() the check if the current message
5574 is already buffered was missing. For every new message was memory
5575 allocated, allowing an attacker to perform an denial of service attack
5576 with sending out of seq handshake messages until there is no memory
5577 left. Additionally every future message was buffered, even if the
5578 sequence number made no sense and would be part of another handshake.
5579 So only messages with sequence numbers less than 10 in advance will be
5580 buffered. (CVE-2009-1378)
5581 [Robin Seggelmann, discovered by Daniel Mentz]
5583 *) Records are buffered if they arrive with a future epoch to be
5584 processed after finishing the corresponding handshake. There is
5585 currently no limitation to this buffer allowing an attacker to perform
5586 a DOS attack with sending records with future epochs until there is no
5587 memory left. This patch adds the pqueue_size() function to determine
5588 the size of a buffer and limits the record buffer to 100 entries.
5590 [Robin Seggelmann, discovered by Daniel Mentz]
5592 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
5593 parent structure is freed. (CVE-2009-1379)
5596 *) Handle non-blocking I/O properly in SSL_shutdown() call.
5597 [Darryl Miles <darryl-mailinglists@netbauds.net>]
5600 [Ilya O. <vrghost@gmail.com>]
5602 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
5604 *) Disable renegotiation completely - this fixes a severe security
5605 problem (CVE-2009-3555) at the cost of breaking all
5606 renegotiation. Renegotiation can be re-enabled by setting
5607 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
5608 run-time. This is really not recommended unless you know what
5612 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
5614 *) Don't set val to NULL when freeing up structures, it is freed up by
5615 underlying code. If sizeof(void *) > sizeof(long) this can result in
5616 zeroing past the valid field. (CVE-2009-0789)
5617 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
5619 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
5620 checked correctly. This would allow some invalid signed attributes to
5621 appear to verify correctly. (CVE-2009-0591)
5622 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5624 *) Reject UniversalString and BMPString types with invalid lengths. This
5625 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
5626 a legal length. (CVE-2009-0590)
5629 *) Set S/MIME signing as the default purpose rather than setting it
5630 unconditionally. This allows applications to override it at the store
5634 *) Permit restricted recursion of ASN1 strings. This is needed in practice
5635 to handle some structures.
5638 *) Improve efficiency of mem_gets: don't search whole buffer each time
5640 [Jeremy Shapiro <jnshapir@us.ibm.com>]
5642 *) New -hex option for openssl rand.
5645 *) Print out UTF8String and NumericString when parsing ASN1.
5648 *) Support NumericString type for name components.
5651 *) Allow CC in the environment to override the automatically chosen
5652 compiler. Note that nothing is done to ensure flags work with the
5656 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
5658 *) Properly check EVP_VerifyFinal() and similar return values
5660 [Ben Laurie, Bodo Moeller, Google Security Team]
5662 *) Enable TLS extensions by default.
5665 *) Allow the CHIL engine to be loaded, whether the application is
5666 multithreaded or not. (This does not release the developer from the
5667 obligation to set up the dynamic locking callbacks.)
5668 [Sander Temme <sander@temme.net>]
5670 *) Use correct exit code if there is an error in dgst command.
5671 [Steve Henson; problem pointed out by Roland Dirlewanger]
5673 *) Tweak Configure so that you need to say "experimental-jpake" to enable
5674 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
5677 *) Add experimental JPAKE support, including demo authentication in
5678 s_client and s_server.
5681 *) Set the comparison function in v3_addr_canonize().
5682 [Rob Austein <sra@hactrn.net>]
5684 *) Add support for XMPP STARTTLS in s_client.
5685 [Philip Paeps <philip@freebsd.org>]
5687 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
5688 to ensure that even with this option, only ciphersuites in the
5689 server's preference list will be accepted. (Note that the option
5690 applies only when resuming a session, so the earlier behavior was
5691 just about the algorithm choice for symmetric cryptography.)
5694 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
5696 *) Fix NULL pointer dereference if a DTLS server received
5697 ChangeCipherSpec as first record (CVE-2009-1386).
5700 *) Fix a state transition in s3_srvr.c and d1_srvr.c
5701 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
5704 *) The fix in 0.9.8c that supposedly got rid of unsafe
5705 double-checked locking was incomplete for RSA blinding,
5706 addressing just one layer of what turns out to have been
5707 doubly unsafe triple-checked locking.
5709 So now fix this for real by retiring the MONT_HELPER macro
5710 in crypto/rsa/rsa_eay.c.
5712 [Bodo Moeller; problem pointed out by Marius Schilder]
5714 *) Various precautionary measures:
5716 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
5718 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
5719 (NB: This would require knowledge of the secret session ticket key
5720 to exploit, in which case you'd be SOL either way.)
5722 - Change bn_nist.c so that it will properly handle input BIGNUMs
5723 outside the expected range.
5725 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
5728 [Neel Mehta, Bodo Moeller]
5730 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
5731 the load fails. Useful for distros.
5732 [Ben Laurie and the FreeBSD team]
5734 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
5737 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
5740 *) Expand ENGINE to support engine supplied SSL client certificate functions.
5742 This work was sponsored by Logica.
5745 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
5746 keystores. Support for SSL/TLS client authentication too.
5747 Not compiled unless enable-capieng specified to Configure.
5749 This work was sponsored by Logica.
5752 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
5753 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
5754 attribute creation routines such as certificate requests and PKCS#12
5758 Changes between 0.9.8g and 0.9.8h [28 May 2008]
5760 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
5761 handshake which could lead to a client crash as found using the
5762 Codenomicon TLS test suite (CVE-2008-1672)
5763 [Steve Henson, Mark Cox]
5765 *) Fix double free in TLS server name extensions which could lead to
5766 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
5769 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
5771 Clear the error queue to ensure that error entries left from
5772 older function calls do not interfere with the correct operation.
5773 [Lutz Jaenicke, Erik de Castro Lopo]
5775 *) Remove root CA certificates of commercial CAs:
5777 The OpenSSL project does not recommend any specific CA and does not
5778 have any policy with respect to including or excluding any CA.
5779 Therefore it does not make any sense to ship an arbitrary selection
5780 of root CA certificates with the OpenSSL software.
5783 *) RSA OAEP patches to fix two separate invalid memory reads.
5784 The first one involves inputs when 'lzero' is greater than
5785 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
5786 before the beginning of from). The second one involves inputs where
5787 the 'db' section contains nothing but zeroes (there is a one-byte
5788 invalid read after the end of 'db').
5789 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5791 *) Partial backport from 0.9.9-dev:
5793 Introduce bn_mul_mont (dedicated Montgomery multiplication
5794 procedure) as a candidate for BIGNUM assembler implementation.
5795 While 0.9.9-dev uses assembler for various architectures, only
5796 x86_64 is available by default here in the 0.9.8 branch, and
5797 32-bit x86 is available through a compile-time setting.
5799 To try the 32-bit x86 assembler implementation, use Configure
5800 option "enable-montasm" (which exists only for this backport).
5802 As "enable-montasm" for 32-bit x86 disclaims code stability
5803 anyway, in this constellation we activate additional code
5804 backported from 0.9.9-dev for further performance improvements,
5805 namely BN_from_montgomery_word. (To enable this otherwise,
5806 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
5808 [Andy Polyakov (backport partially by Bodo Moeller)]
5810 *) Add TLS session ticket callback. This allows an application to set
5811 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
5812 values. This is useful for key rollover for example where several key
5813 sets may exist with different names.
5816 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
5817 This was broken until now in 0.9.8 releases, such that the only way
5818 a registered ENGINE could be used (assuming it initialises
5819 successfully on the host) was to explicitly set it as the default
5820 for the relevant algorithms. This is in contradiction with 0.9.7
5821 behaviour and the documentation. With this fix, when an ENGINE is
5822 registered into a given algorithm's table of implementations, the
5823 'uptodate' flag is reset so that auto-discovery will be used next
5824 time a new context for that algorithm attempts to select an
5826 [Ian Lister (tweaked by Geoff Thorpe)]
5828 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
5829 implementation in the following ways:
5831 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
5834 Lack of BER streaming support means one pass streaming processing is
5835 only supported if data is detached: setting the streaming flag is
5836 ignored for embedded content.
5838 CMS support is disabled by default and must be explicitly enabled
5839 with the enable-cms configuration option.
5842 *) Update the GMP engine glue to do direct copies between BIGNUM and
5843 mpz_t when openssl and GMP use the same limb size. Otherwise the
5844 existing "conversion via a text string export" trick is still used.
5845 [Paul Sheer <paulsheer@gmail.com>]
5847 *) Zlib compression BIO. This is a filter BIO which compressed and
5848 uncompresses any data passed through it.
5851 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
5852 RFC3394 compatible AES key wrapping.
5855 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
5856 sets string data without copying. X509_ALGOR_set0() and
5857 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
5858 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
5859 from an X509_ATTRIBUTE structure optionally checking it occurs only
5860 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
5864 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
5865 to get the expected BN_FLG_CONSTTIME behavior.
5866 [Bodo Moeller (Google)]
5870 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
5871 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
5872 - added some more tests to do_tests.pl
5873 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
5874 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
5875 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
5876 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
5877 - various changes to netware.pl to enable gcc-cross builds on Win32
5879 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
5880 - various changes to fix missing prototype warnings
5881 - fixed x86nasm.pl to create correct asm files for NASM COFF output
5882 - added AES, WHIRLPOOL and CPUID assembler code to build files
5883 - added missing AES assembler make rules to mk1mf.pl
5884 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
5885 [Guenter Knauf <eflash@gmx.net>]
5887 *) Implement certificate status request TLS extension defined in RFC3546.
5888 A client can set the appropriate parameters and receive the encoded
5889 OCSP response via a callback. A server can query the supplied parameters
5890 and set the encoded OCSP response in the callback. Add simplified examples
5891 to s_client and s_server.
5894 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
5896 *) Fix various bugs:
5897 + Binary incompatibility of ssl_ctx_st structure
5898 + DTLS interoperation with non-compliant servers
5899 + Don't call get_session_cb() without proposed session
5900 + Fix ia64 assembler code
5901 [Andy Polyakov, Steve Henson]
5903 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
5905 *) DTLS Handshake overhaul. There were longstanding issues with
5906 OpenSSL DTLS implementation, which were making it impossible for
5907 RFC 4347 compliant client to communicate with OpenSSL server.
5908 Unfortunately just fixing these incompatibilities would "cut off"
5909 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
5910 server keeps tolerating non RFC compliant syntax. The opposite is
5911 not true, 0.9.8f client can not communicate with earlier server.
5912 This update even addresses CVE-2007-4995.
5915 *) Changes to avoid need for function casts in OpenSSL: some compilers
5916 (gcc 4.2 and later) reject their use.
5917 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
5920 *) Add RFC4507 support to OpenSSL. This includes the corrections in
5921 RFC4507bis. The encrypted ticket format is an encrypted encoded
5922 SSL_SESSION structure, that way new session features are automatically
5925 If a client application caches session in an SSL_SESSION structure
5926 support is transparent because tickets are now stored in the encoded
5929 The SSL_CTX structure automatically generates keys for ticket
5930 protection in servers so again support should be possible
5931 with no application modification.
5933 If a client or server wishes to disable RFC4507 support then the option
5934 SSL_OP_NO_TICKET can be set.
5936 Add a TLS extension debugging callback to allow the contents of any client
5937 or server extensions to be examined.
5939 This work was sponsored by Google.
5942 *) Add initial support for TLS extensions, specifically for the server_name
5943 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5944 have new members for a host name. The SSL data structure has an
5945 additional member SSL_CTX *initial_ctx so that new sessions can be
5946 stored in that context to allow for session resumption, even after the
5947 SSL has been switched to a new SSL_CTX in reaction to a client's
5948 server_name extension.
5950 New functions (subject to change):
5952 SSL_get_servername()
5953 SSL_get_servername_type()
5956 New CTRL codes and macros (subject to change):
5958 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5959 - SSL_CTX_set_tlsext_servername_callback()
5960 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5961 - SSL_CTX_set_tlsext_servername_arg()
5962 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5964 openssl s_client has a new '-servername ...' option.
5966 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5967 '-key2 ...', '-servername_fatal' (subject to change). This allows
5968 testing the HostName extension for a specific single host name ('-cert'
5969 and '-key' remain fallbacks for handshakes without HostName
5970 negotiation). If the unrecognized_name alert has to be sent, this by
5971 default is a warning; it becomes fatal with the '-servername_fatal'
5974 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
5976 *) Add AES and SSE2 assembly language support to VC++ build.
5979 *) Mitigate attack on final subtraction in Montgomery reduction.
5982 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
5983 (which previously caused an internal error).
5986 *) Squeeze another 10% out of IGE mode when in != out.
5989 *) AES IGE mode speedup.
5990 [Dean Gaudet (Google)]
5992 *) Add the Korean symmetric 128-bit cipher SEED (see
5993 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
5994 add SEED ciphersuites from RFC 4162:
5996 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
5997 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
5998 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
5999 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
6001 To minimize changes between patchlevels in the OpenSSL 0.9.8
6002 series, SEED remains excluded from compilation unless OpenSSL
6003 is configured with 'enable-seed'.
6004 [KISA, Bodo Moeller]
6006 *) Mitigate branch prediction attacks, which can be practical if a
6007 single processor is shared, allowing a spy process to extract
6008 information. For detailed background information, see
6009 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
6010 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
6011 and Necessary Software Countermeasures"). The core of the change
6012 are new versions BN_div_no_branch() and
6013 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
6014 respectively, which are slower, but avoid the security-relevant
6015 conditional branches. These are automatically called by BN_div()
6016 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
6017 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
6018 remove a conditional branch.
6020 BN_FLG_CONSTTIME is the new name for the previous
6021 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
6022 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
6023 in the exponent causes BN_mod_exp_mont() to use the alternative
6024 implementation in BN_mod_exp_mont_consttime().) The old name
6025 remains as a deprecated alias.
6027 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
6028 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
6029 constant-time implementations for more than just exponentiation.
6030 Here too the old name is kept as a deprecated alias.
6032 BN_BLINDING_new() will now use BN_dup() for the modulus so that
6033 the BN_BLINDING structure gets an independent copy of the
6034 modulus. This means that the previous "BIGNUM *m" argument to
6035 BN_BLINDING_new() and to BN_BLINDING_create_param() now
6036 essentially becomes "const BIGNUM *m", although we can't actually
6037 change this in the header file before 0.9.9. It allows
6038 RSA_setup_blinding() to use BN_with_flags() on the modulus to
6039 enable BN_FLG_CONSTTIME.
6041 [Matthew D Wood (Intel Corp)]
6043 *) In the SSL/TLS server implementation, be strict about session ID
6044 context matching (which matters if an application uses a single
6045 external cache for different purposes). Previously,
6046 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
6047 set. This did ensure strict client verification, but meant that,
6048 with applications using a single external cache for quite
6049 different requirements, clients could circumvent ciphersuite
6050 restrictions for a given session ID context by starting a session
6051 in a different context.
6054 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
6055 a ciphersuite string such as "DEFAULT:RSA" cannot enable
6056 authentication-only ciphersuites.
6059 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
6060 not complete and could lead to a possible single byte overflow
6061 (CVE-2007-5135) [Ben Laurie]
6063 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
6065 *) Since AES128 and AES256 (and similarly Camellia128 and
6066 Camellia256) share a single mask bit in the logic of
6067 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
6068 kludge to work properly if AES128 is available and AES256 isn't
6069 (or if Camellia128 is available and Camellia256 isn't).
6072 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
6073 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
6074 When a point or a seed is encoded in a BIT STRING, we need to
6075 prevent the removal of trailing zero bits to get the proper DER
6076 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
6077 of a NamedBitList, for which trailing 0 bits need to be removed.)
6080 *) Have SSL/TLS server implementation tolerate "mismatched" record
6081 protocol version while receiving ClientHello even if the
6082 ClientHello is fragmented. (The server can't insist on the
6083 particular protocol version it has chosen before the ServerHello
6084 message has informed the client about his choice.)
6087 *) Add RFC 3779 support.
6088 [Rob Austein for ARIN, Ben Laurie]
6090 *) Load error codes if they are not already present instead of using a
6091 static variable. This allows them to be cleanly unloaded and reloaded.
6092 Improve header file function name parsing.
6095 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
6096 or CAPABILITY handshake as required by RFCs.
6099 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
6101 *) Introduce limits to prevent malicious keys being able to
6102 cause a denial of service. (CVE-2006-2940)
6103 [Steve Henson, Bodo Moeller]
6105 *) Fix ASN.1 parsing of certain invalid structures that can result
6106 in a denial of service. (CVE-2006-2937) [Steve Henson]
6108 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
6109 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
6111 *) Fix SSL client code which could crash if connecting to a
6112 malicious SSLv2 server. (CVE-2006-4343)
6113 [Tavis Ormandy and Will Drewry, Google Security Team]
6115 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
6116 match only those. Before that, "AES256-SHA" would be interpreted
6117 as a pattern and match "AES128-SHA" too (since AES128-SHA got
6118 the same strength classification in 0.9.7h) as we currently only
6119 have a single AES bit in the ciphersuite description bitmap.
6120 That change, however, also applied to ciphersuite strings such as
6121 "RC4-MD5" that intentionally matched multiple ciphersuites --
6122 namely, SSL 2.0 ciphersuites in addition to the more common ones
6123 from SSL 3.0/TLS 1.0.
6125 So we change the selection algorithm again: Naming an explicit
6126 ciphersuite selects this one ciphersuite, and any other similar
6127 ciphersuite (same bitmap) from *other* protocol versions.
6128 Thus, "RC4-MD5" again will properly select both the SSL 2.0
6129 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
6131 Since SSL 2.0 does not have any ciphersuites for which the
6132 128/256 bit distinction would be relevant, this works for now.
6133 The proper fix will be to use different bits for AES128 and
6134 AES256, which would have avoided the problems from the beginning;
6135 however, bits are scarce, so we can only do this in a new release
6136 (not just a patchlevel) when we can change the SSL_CIPHER
6137 definition to split the single 'unsigned long mask' bitmap into
6138 multiple values to extend the available space.
6142 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
6144 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
6145 (CVE-2006-4339) [Ben Laurie and Google Security Team]
6147 *) Add AES IGE and biIGE modes.
6150 *) Change the Unix randomness entropy gathering to use poll() when
6151 possible instead of select(), since the latter has some
6152 undesirable limitations.
6153 [Darryl Miles via Richard Levitte and Bodo Moeller]
6155 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
6156 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
6157 cannot be implicitly activated as part of, e.g., the "AES" alias.
6158 However, please upgrade to OpenSSL 0.9.9[-dev] for
6159 non-experimental use of the ECC ciphersuites to get TLS extension
6160 support, which is required for curve and point format negotiation
6161 to avoid potential handshake problems.
6164 *) Disable rogue ciphersuites:
6166 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
6167 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
6168 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
6170 The latter two were purportedly from
6171 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
6174 Also deactivate the remaining ciphersuites from
6175 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
6176 unofficial, and the ID has long expired.
6179 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
6180 dual-core machines) and other potential thread-safety issues.
6183 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
6184 versions), which is now available for royalty-free use
6185 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
6186 Also, add Camellia TLS ciphersuites from RFC 4132.
6188 To minimize changes between patchlevels in the OpenSSL 0.9.8
6189 series, Camellia remains excluded from compilation unless OpenSSL
6190 is configured with 'enable-camellia'.
6193 *) Disable the padding bug check when compression is in use. The padding
6194 bug check assumes the first packet is of even length, this is not
6195 necessarily true if compression is enabled and can result in false
6196 positives causing handshake failure. The actual bug test is ancient
6197 code so it is hoped that implementations will either have fixed it by
6198 now or any which still have the bug do not support compression.
6201 Changes between 0.9.8a and 0.9.8b [04 May 2006]
6203 *) When applying a cipher rule check to see if string match is an explicit
6204 cipher suite and only match that one cipher suite if it is.
6207 *) Link in manifests for VC++ if needed.
6208 [Austin Ziegler <halostatue@gmail.com>]
6210 *) Update support for ECC-based TLS ciphersuites according to
6211 draft-ietf-tls-ecc-12.txt with proposed changes (but without
6212 TLS extensions, which are supported starting with the 0.9.9
6213 branch, not in the OpenSSL 0.9.8 branch).
6216 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
6217 opaque EVP_CIPHER_CTX handling.
6220 *) Fixes and enhancements to zlib compression code. We now only use
6221 "zlib1.dll" and use the default __cdecl calling convention on Win32
6222 to conform with the standards mentioned here:
6223 http://www.zlib.net/DLL_FAQ.txt
6224 Static zlib linking now works on Windows and the new --with-zlib-include
6225 --with-zlib-lib options to Configure can be used to supply the location
6226 of the headers and library. Gracefully handle case where zlib library
6230 *) Several fixes and enhancements to the OID generation code. The old code
6231 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
6232 handle numbers larger than ULONG_MAX, truncated printing and had a
6233 non standard OBJ_obj2txt() behaviour.
6236 *) Add support for building of engines under engine/ as shared libraries
6237 under VC++ build system.
6240 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
6241 Hopefully, we will not see any false combination of paths any more.
6244 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
6246 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
6247 (part of SSL_OP_ALL). This option used to disable the
6248 countermeasure against man-in-the-middle protocol-version
6249 rollback in the SSL 2.0 server implementation, which is a bad
6250 idea. (CVE-2005-2969)
6252 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
6253 for Information Security, National Institute of Advanced Industrial
6254 Science and Technology [AIST], Japan)]
6256 *) Add two function to clear and return the verify parameter flags.
6259 *) Keep cipherlists sorted in the source instead of sorting them at
6260 runtime, thus removing the need for a lock.
6263 *) Avoid some small subgroup attacks in Diffie-Hellman.
6264 [Nick Mathewson and Ben Laurie]
6266 *) Add functions for well-known primes.
6269 *) Extended Windows CE support.
6270 [Satoshi Nakamura and Andy Polyakov]
6272 *) Initialize SSL_METHOD structures at compile time instead of during
6273 runtime, thus removing the need for a lock.
6276 *) Make PKCS7_decrypt() work even if no certificate is supplied by
6277 attempting to decrypt each encrypted key in turn. Add support to
6281 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
6283 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
6286 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
6289 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
6290 key into the same file any more.
6293 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
6296 *) Add -utf8 command line and config file option to 'ca'.
6297 [Stefan <stf@udoma.org]
6299 *) Removed the macro des_crypt(), as it seems to conflict with some
6300 libraries. Use DES_crypt().
6303 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
6304 involves renaming the source and generated shared-libs for
6305 both. The engines will accept the corrected or legacy ids
6306 ('ncipher' and '4758_cca' respectively) when binding. NB,
6307 this only applies when building 'shared'.
6308 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
6310 *) Add attribute functions to EVP_PKEY structure. Modify
6311 PKCS12_create() to recognize a CSP name attribute and
6312 use it. Make -CSP option work again in pkcs12 utility.
6315 *) Add new functionality to the bn blinding code:
6316 - automatic re-creation of the BN_BLINDING parameters after
6317 a fixed number of uses (currently 32)
6318 - add new function for parameter creation
6319 - introduce flags to control the update behaviour of the
6320 BN_BLINDING parameters
6321 - hide BN_BLINDING structure
6322 Add a second BN_BLINDING slot to the RSA structure to improve
6323 performance when a single RSA object is shared among several
6327 *) Add support for DTLS.
6328 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
6330 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
6331 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
6334 *) Remove buggy and incomplete DH cert support from
6335 ssl/ssl_rsa.c and ssl/s3_both.c
6338 *) Use SHA-1 instead of MD5 as the default digest algorithm for
6339 the apps/openssl applications.
6342 *) Compile clean with "-Wall -Wmissing-prototypes
6343 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
6344 DEBUG_SAFESTACK must also be set.
6347 *) Change ./Configure so that certain algorithms can be disabled by default.
6348 The new counterpiece to "no-xxx" is "enable-xxx".
6350 The patented RC5 and MDC2 algorithms will now be disabled unless
6351 "enable-rc5" and "enable-mdc2", respectively, are specified.
6353 (IDEA remains enabled despite being patented. This is because IDEA
6354 is frequently required for interoperability, and there is no license
6355 fee for non-commercial use. As before, "no-idea" can be used to
6356 avoid this algorithm.)
6360 *) Add processing of proxy certificates (see RFC 3820). This work was
6361 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
6362 EGEE (Enabling Grids for E-science in Europe).
6365 *) RC4 performance overhaul on modern architectures/implementations, such
6366 as Intel P4, IA-64 and AMD64.
6369 *) New utility extract-section.pl. This can be used specify an alternative
6370 section number in a pod file instead of having to treat each file as
6371 a separate case in Makefile. This can be done by adding two lines to the
6374 =for comment openssl_section:XXX
6376 The blank line is mandatory.
6380 *) New arguments -certform, -keyform and -pass for s_client and s_server
6381 to allow alternative format key and certificate files and passphrase
6385 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
6386 update associated structures and add various utility functions.
6388 Add new policy related verify parameters, include policy checking in
6389 standard verify code. Enhance 'smime' application with extra parameters
6390 to support policy checking and print out.
6393 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
6394 Nehemiah processors. These extensions support AES encryption in hardware
6395 as well as RNG (though RNG support is currently disabled).
6396 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
6398 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
6401 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
6402 [Andy Polyakov and a number of other people]
6404 *) Improved PowerPC platform support. Most notably BIGNUM assembler
6405 implementation contributed by IBM.
6406 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
6408 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
6409 exponent rather than 'unsigned long'. There is a corresponding change to
6410 the new 'rsa_keygen' element of the RSA_METHOD structure.
6411 [Jelte Jansen, Geoff Thorpe]
6413 *) Functionality for creating the initial serial number file is now
6414 moved from CA.pl to the 'ca' utility with a new option -create_serial.
6416 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
6417 number file to 1, which is bound to cause problems. To avoid
6418 the problems while respecting compatibility between different 0.9.7
6419 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
6420 CA.pl for serial number initialization. With the new release 0.9.8,
6421 we can fix the problem directly in the 'ca' utility.)
6424 *) Reduced header interdependencies by declaring more opaque objects in
6425 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
6426 give fewer recursive includes, which could break lazy source code - so
6427 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
6428 developers should define this symbol when building and using openssl to
6429 ensure they track the recommended behaviour, interfaces, [etc], but
6430 backwards-compatible behaviour prevails when this isn't defined.
6433 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
6436 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
6437 This will generate a random key of the appropriate length based on the
6438 cipher context. The EVP_CIPHER can provide its own random key generation
6439 routine to support keys of a specific form. This is used in the des and
6440 3des routines to generate a key of the correct parity. Update S/MIME
6441 code to use new functions and hence generate correct parity DES keys.
6442 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
6443 valid (weak or incorrect parity).
6446 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
6447 as looking them up. This is useful when the verified structure may contain
6448 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
6449 present unless the new PKCS7_NO_CRL flag is asserted.
6452 *) Extend ASN1 oid configuration module. It now additionally accepts the
6455 shortName = some long name, 1.2.3.4
6458 *) Reimplemented the BN_CTX implementation. There is now no more static
6459 limitation on the number of variables it can handle nor the depth of the
6460 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
6461 information can now expand as required, and rather than having a single
6462 static array of bignums, BN_CTX now uses a linked-list of such arrays
6463 allowing it to expand on demand whilst maintaining the usefulness of
6464 BN_CTX's "bundling".
6467 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
6468 to allow all RSA operations to function using a single BN_CTX.
6471 *) Preliminary support for certificate policy evaluation and checking. This
6472 is initially intended to pass the tests outlined in "Conformance Testing
6473 of Relying Party Client Certificate Path Processing Logic" v1.07.
6476 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
6477 remained unused and not that useful. A variety of other little bignum
6478 tweaks and fixes have also been made continuing on from the audit (see
6482 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
6483 associated ASN1, EVP and SSL functions and old ASN1 macros.
6486 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
6487 and this should never fail. So the return value from the use of
6488 BN_set_word() (which can fail due to needless expansion) is now deprecated;
6489 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
6492 *) BN_CTX_get() should return zero-valued bignums, providing the same
6493 initialised value as BN_new().
6494 [Geoff Thorpe, suggested by Ulf Möller]
6496 *) Support for inhibitAnyPolicy certificate extension.
6499 *) An audit of the BIGNUM code is underway, for which debugging code is
6500 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
6501 is considered valid when processing BIGNUMs, and causes execution to
6502 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
6503 further steps are taken to deliberately pollute unused data in BIGNUM
6504 structures to try and expose faulty code further on. For now, openssl will
6505 (in its default mode of operation) continue to tolerate the inconsistent
6506 forms that it has tolerated in the past, but authors and packagers should
6507 consider trying openssl and their own applications when compiled with
6508 these debugging symbols defined. It will help highlight potential bugs in
6509 their own code, and will improve the test coverage for OpenSSL itself. At
6510 some point, these tighter rules will become openssl's default to improve
6511 maintainability, though the assert()s and other overheads will remain only
6512 in debugging configurations. See bn.h for more details.
6513 [Geoff Thorpe, Nils Larsch, Ulf Möller]
6515 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
6516 that can only be obtained through BN_CTX_new() (which implicitly
6517 initialises it). The presence of this function only made it possible
6518 to overwrite an existing structure (and cause memory leaks).
6521 *) Because of the callback-based approach for implementing LHASH as a
6522 template type, lh_insert() adds opaque objects to hash-tables and
6523 lh_doall() or lh_doall_arg() are typically used with a destructor callback
6524 to clean up those corresponding objects before destroying the hash table
6525 (and losing the object pointers). So some over-zealous constifications in
6526 LHASH have been relaxed so that lh_insert() does not take (nor store) the
6527 objects as "const" and the lh_doall[_arg] callback wrappers are not
6528 prototyped to have "const" restrictions on the object pointers they are
6529 given (and so aren't required to cast them away any more).
6532 *) The tmdiff.h API was so ugly and minimal that our own timing utility
6533 (speed) prefers to use its own implementation. The two implementations
6534 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
6535 its object type properly exposed (MS_TM) instead of casting to/from "char
6536 *". This may still change yet if someone realises MS_TM and "ms_time_***"
6537 aren't necessarily the greatest nomenclatures - but this is what was used
6538 internally to the implementation so I've used that for now.
6541 *) Ensure that deprecated functions do not get compiled when
6542 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
6543 the self-tests were still using deprecated key-generation functions so
6544 these have been updated also.
6547 *) Reorganise PKCS#7 code to separate the digest location functionality
6548 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
6549 New function PKCS7_set_digest() to set the digest type for PKCS#7
6550 digestedData type. Add additional code to correctly generate the
6551 digestedData type and add support for this type in PKCS7 initialization
6555 *) New function PKCS7_set0_type_other() this initializes a PKCS7
6556 structure of type "other".
6559 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
6560 sure the loop does correctly stop and breaking ("division by zero")
6561 modulus operations are not performed. The (pre-generated) prime
6562 table crypto/bn/bn_prime.h was already correct, but it could not be
6563 re-generated on some platforms because of the "division by zero"
6564 situation in the script.
6565 [Ralf S. Engelschall]
6567 *) Update support for ECC-based TLS ciphersuites according to
6568 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
6569 SHA-1 now is only used for "small" curves (where the
6570 representation of a field element takes up to 24 bytes); for
6571 larger curves, the field element resulting from ECDH is directly
6572 used as premaster secret.
6573 [Douglas Stebila (Sun Microsystems Laboratories)]
6575 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
6576 curve secp160r1 to the tests.
6577 [Douglas Stebila (Sun Microsystems Laboratories)]
6579 *) Add the possibility to load symbols globally with DSO.
6580 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
6582 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
6583 control of the error stack.
6586 *) Add support for STORE in ENGINE.
6589 *) Add the STORE type. The intention is to provide a common interface
6590 to certificate and key stores, be they simple file-based stores, or
6591 HSM-type store, or LDAP stores, or...
6592 NOTE: The code is currently UNTESTED and isn't really used anywhere.
6595 *) Add a generic structure called OPENSSL_ITEM. This can be used to
6596 pass a list of arguments to any function as well as provide a way
6597 for a function to pass data back to the caller.
6600 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
6601 works like BUF_strdup() but can be used to duplicate a portion of
6602 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
6606 *) Add the function sk_find_ex() which works like sk_find(), but will
6607 return an index to an element even if an exact match couldn't be
6608 found. The index is guaranteed to point at the element where the
6609 searched-for key would be inserted to preserve sorting order.
6612 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
6613 takes an extra flags argument for optional functionality. Currently,
6614 the following flags are defined:
6616 OBJ_BSEARCH_VALUE_ON_NOMATCH
6617 This one gets OBJ_bsearch_ex() to return a pointer to the first
6618 element where the comparing function returns a negative or zero
6621 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
6622 This one gets OBJ_bsearch_ex() to return a pointer to the first
6623 element where the comparing function returns zero. This is useful
6624 if there are more than one element where the comparing function
6628 *) Make it possible to create self-signed certificates with 'openssl ca'
6629 in such a way that the self-signed certificate becomes part of the
6630 CA database and uses the same mechanisms for serial number generation
6631 as all other certificate signing. The new flag '-selfsign' enables
6632 this functionality. Adapt CA.sh and CA.pl.in.
6635 *) Add functionality to check the public key of a certificate request
6636 against a given private. This is useful to check that a certificate
6637 request can be signed by that key (self-signing).
6640 *) Make it possible to have multiple active certificates with the same
6641 subject in the CA index file. This is done only if the keyword
6642 'unique_subject' is set to 'no' in the main CA section (default
6643 if 'CA_default') of the configuration file. The value is saved
6644 with the database itself in a separate index attribute file,
6645 named like the index file with '.attr' appended to the name.
6648 *) Generate multi-valued AVAs using '+' notation in config files for
6652 *) Support for nameConstraints certificate extension.
6655 *) Support for policyConstraints certificate extension.
6658 *) Support for policyMappings certificate extension.
6661 *) Make sure the default DSA_METHOD implementation only uses its
6662 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
6663 and change its own handlers to be NULL so as to remove unnecessary
6664 indirection. This lets alternative implementations fallback to the
6665 default implementation more easily.
6668 *) Support for directoryName in GeneralName related extensions
6672 *) Make it possible to link applications using Makefile.shared.
6673 Make that possible even when linking against static libraries!
6676 *) Support for single pass processing for S/MIME signing. This now
6677 means that S/MIME signing can be done from a pipe, in addition
6678 cleartext signing (multipart/signed type) is effectively streaming
6679 and the signed data does not need to be all held in memory.
6681 This is done with a new flag PKCS7_STREAM. When this flag is set
6682 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
6683 is done after the data is output (and digests calculated) in
6684 SMIME_write_PKCS7().
6687 *) Add full support for -rpath/-R, both in shared libraries and
6688 applications, at least on the platforms where it's known how
6692 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
6693 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
6694 will now compute a table of multiples of the generator that
6695 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
6696 faster (notably in the case of a single point multiplication,
6697 scalar * generator).
6698 [Nils Larsch, Bodo Moeller]
6700 *) IPv6 support for certificate extensions. The various extensions
6701 which use the IP:a.b.c.d can now take IPv6 addresses using the
6702 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
6706 *) Added an ENGINE that implements RSA by performing private key
6707 exponentiations with the GMP library. The conversions to and from
6708 GMP's mpz_t format aren't optimised nor are any montgomery forms
6709 cached, and on x86 it appears OpenSSL's own performance has caught up.
6710 However there are likely to be other architectures where GMP could
6711 provide a boost. This ENGINE is not built in by default, but it can be
6712 specified at Configure time and should be accompanied by the necessary
6713 linker additions, eg;
6714 ./config -DOPENSSL_USE_GMP -lgmp
6717 *) "openssl engine" will not display ENGINE/DSO load failure errors when
6718 testing availability of engines with "-t" - the old behaviour is
6719 produced by increasing the feature's verbosity with "-tt".
6722 *) ECDSA routines: under certain error conditions uninitialized BN objects
6723 could be freed. Solution: make sure initialization is performed early
6724 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
6728 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
6729 and DH_METHOD (eg. by ENGINE implementations) to override the normal
6730 software implementations. For DSA and DH, parameter generation can
6731 also be overridden by providing the appropriate method callbacks.
6734 *) Change the "progress" mechanism used in key-generation and
6735 primality testing to functions that take a new BN_GENCB pointer in
6736 place of callback/argument pairs. The new API functions have "_ex"
6737 postfixes and the older functions are reimplemented as wrappers for
6738 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
6739 declarations of the old functions to help (graceful) attempts to
6740 migrate to the new functions. Also, the new key-generation API
6741 functions operate on a caller-supplied key-structure and return
6742 success/failure rather than returning a key or NULL - this is to
6743 help make "keygen" another member function of RSA_METHOD etc.
6745 Example for using the new callback interface:
6747 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
6751 BN_GENCB_set(&my_cb, my_callback, my_arg);
6753 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
6754 /* For the meaning of a, b in calls to my_callback(), see the
6755 * documentation of the function that calls the callback.
6756 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
6757 * my_callback should return 1 if it wants BN_is_prime_ex()
6758 * to continue, or 0 to stop.
6763 *) Change the ZLIB compression method to be stateful, and make it
6764 available to TLS with the number defined in
6765 draft-ietf-tls-compression-04.txt.
6768 *) Add the ASN.1 structures and functions for CertificatePair, which
6769 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
6771 CertificatePair ::= SEQUENCE {
6772 forward [0] Certificate OPTIONAL,
6773 reverse [1] Certificate OPTIONAL,
6774 -- at least one of the pair shall be present -- }
6776 Also implement the PEM functions to read and write certificate
6777 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
6779 This needed to be defined, mostly for the sake of the LDAP
6780 attribute crossCertificatePair, but may prove useful elsewhere as
6784 *) Make it possible to inhibit symlinking of shared libraries in
6785 Makefile.shared, for Cygwin's sake.
6788 *) Extend the BIGNUM API by creating a function
6789 void BN_set_negative(BIGNUM *a, int neg);
6790 and a macro that behave like
6791 int BN_is_negative(const BIGNUM *a);
6793 to avoid the need to access 'a->neg' directly in applications.
6796 *) Implement fast modular reduction for pseudo-Mersenne primes
6797 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
6798 EC_GROUP_new_curve_GFp() will now automatically use this
6800 [Nils Larsch <nla@trustcenter.de>]
6802 *) Add new lock type (CRYPTO_LOCK_BN).
6805 *) Change the ENGINE framework to automatically load engines
6806 dynamically from specific directories unless they could be
6807 found to already be built in or loaded. Move all the
6808 current engines except for the cryptodev one to a new
6810 The engines in engines/ are built as shared libraries if
6811 the "shared" options was given to ./Configure or ./config.
6812 Otherwise, they are inserted in libcrypto.a.
6813 /usr/local/ssl/engines is the default directory for dynamic
6814 engines, but that can be overridden at configure time through
6815 the usual use of --prefix and/or --openssldir, and at run
6816 time with the environment variable OPENSSL_ENGINES.
6817 [Geoff Thorpe and Richard Levitte]
6819 *) Add Makefile.shared, a helper makefile to build shared
6820 libraries. Adapt Makefile.org.
6823 *) Add version info to Win32 DLLs.
6824 [Peter 'Luna' Runestig" <peter@runestig.com>]
6826 *) Add new 'medium level' PKCS#12 API. Certificates and keys
6827 can be added using this API to created arbitrary PKCS#12
6828 files while avoiding the low level API.
6830 New options to PKCS12_create(), key or cert can be NULL and
6831 will then be omitted from the output file. The encryption
6832 algorithm NIDs can be set to -1 for no encryption, the mac
6833 iteration count can be set to 0 to omit the mac.
6835 Enhance pkcs12 utility by making the -nokeys and -nocerts
6836 options work when creating a PKCS#12 file. New option -nomac
6837 to omit the mac, NONE can be set for an encryption algorithm.
6838 New code is modified to use the enhanced PKCS12_create()
6839 instead of the low level API.
6842 *) Extend ASN1 encoder to support indefinite length constructed
6843 encoding. This can output sequences tags and octet strings in
6844 this form. Modify pk7_asn1.c to support indefinite length
6845 encoding. This is experimental and needs additional code to
6846 be useful, such as an ASN1 bio and some enhanced streaming
6849 Extend template encode functionality so that tagging is passed
6850 down to the template encoder.
6853 *) Let 'openssl req' fail if an argument to '-newkey' is not
6854 recognized instead of using RSA as a default.
6857 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
6858 As these are not official, they are not included in "ALL";
6859 the "ECCdraft" ciphersuite group alias can be used to select them.
6860 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
6862 *) Add ECDH engine support.
6863 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
6865 *) Add ECDH in new directory crypto/ecdh/.
6866 [Douglas Stebila (Sun Microsystems Laboratories)]
6868 *) Let BN_rand_range() abort with an error after 100 iterations
6869 without success (which indicates a broken PRNG).
6872 *) Change BN_mod_sqrt() so that it verifies that the input value
6873 is really the square of the return value. (Previously,
6874 BN_mod_sqrt would show GIGO behaviour.)
6877 *) Add named elliptic curves over binary fields from X9.62, SECG,
6878 and WAP/WTLS; add OIDs that were still missing.
6880 [Sheueling Chang Shantz and Douglas Stebila
6881 (Sun Microsystems Laboratories)]
6883 *) Extend the EC library for elliptic curves over binary fields
6884 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
6887 EC_GF2m_simple_method
6891 EC_GROUP_new_curve_GF2m
6892 EC_GROUP_set_curve_GF2m
6893 EC_GROUP_get_curve_GF2m
6894 EC_POINT_set_affine_coordinates_GF2m
6895 EC_POINT_get_affine_coordinates_GF2m
6896 EC_POINT_set_compressed_coordinates_GF2m
6898 Point compression for binary fields is disabled by default for
6899 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
6902 As binary polynomials are represented as BIGNUMs, various members
6903 of the EC_GROUP and EC_POINT data structures can be shared
6904 between the implementations for prime fields and binary fields;
6905 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
6906 are essentially identical to their ..._GFp counterparts.
6907 (For simplicity, the '..._GFp' prefix has been dropped from
6908 various internal method names.)
6910 An internal 'field_div' method (similar to 'field_mul' and
6911 'field_sqr') has been added; this is used only for binary fields.
6913 [Sheueling Chang Shantz and Douglas Stebila
6914 (Sun Microsystems Laboratories)]
6916 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
6917 through methods ('mul', 'precompute_mult').
6919 The generic implementations (now internally called 'ec_wNAF_mul'
6920 and 'ec_wNAF_precomputed_mult') remain the default if these
6921 methods are undefined.
6923 [Sheueling Chang Shantz and Douglas Stebila
6924 (Sun Microsystems Laboratories)]
6926 *) New function EC_GROUP_get_degree, which is defined through
6927 EC_METHOD. For curves over prime fields, this returns the bit
6928 length of the modulus.
6930 [Sheueling Chang Shantz and Douglas Stebila
6931 (Sun Microsystems Laboratories)]
6933 *) New functions EC_GROUP_dup, EC_POINT_dup.
6934 (These simply call ..._new and ..._copy).
6936 [Sheueling Chang Shantz and Douglas Stebila
6937 (Sun Microsystems Laboratories)]
6939 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
6940 Polynomials are represented as BIGNUMs (where the sign bit is not
6941 used) in the following functions [macros]:
6944 BN_GF2m_sub [= BN_GF2m_add]
6945 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
6946 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
6947 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
6949 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
6950 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
6951 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
6952 BN_GF2m_cmp [= BN_ucmp]
6954 (Note that only the 'mod' functions are actually for fields GF(2^m).
6955 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
6957 For some functions, an the irreducible polynomial defining a
6958 field can be given as an 'unsigned int[]' with strictly
6959 decreasing elements giving the indices of those bits that are set;
6960 i.e., p[] represents the polynomial
6961 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
6963 p[0] > p[1] > ... > p[k] = 0.
6964 This applies to the following functions:
6969 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
6970 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
6972 BN_GF2m_mod_sqrt_arr
6973 BN_GF2m_mod_solve_quad_arr
6977 Conversion can be performed by the following functions:
6982 bntest.c has additional tests for binary polynomial arithmetic.
6984 Two implementations for BN_GF2m_mod_div() are available.
6985 The default algorithm simply uses BN_GF2m_mod_inv() and
6986 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
6987 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
6988 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
6990 [Sheueling Chang Shantz and Douglas Stebila
6991 (Sun Microsystems Laboratories)]
6993 *) Add new error code 'ERR_R_DISABLED' that can be used when some
6994 functionality is disabled at compile-time.
6995 [Douglas Stebila <douglas.stebila@sun.com>]
6997 *) Change default behaviour of 'openssl asn1parse' so that more
6998 information is visible when viewing, e.g., a certificate:
7000 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
7001 mode the content of non-printable OCTET STRINGs is output in a
7002 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
7003 avoid the appearance of a printable string.
7004 [Nils Larsch <nla@trustcenter.de>]
7006 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
7008 EC_GROUP_set_asn1_flag()
7009 EC_GROUP_get_asn1_flag()
7010 EC_GROUP_set_point_conversion_form()
7011 EC_GROUP_get_point_conversion_form()
7012 These control ASN1 encoding details:
7013 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
7014 has been set to OPENSSL_EC_NAMED_CURVE.
7015 - Points are encoded in uncompressed form by default; options for
7016 asn1_for are as for point2oct, namely
7017 POINT_CONVERSION_COMPRESSED
7018 POINT_CONVERSION_UNCOMPRESSED
7019 POINT_CONVERSION_HYBRID
7021 Also add 'seed' and 'seed_len' members to EC_GROUP with access
7024 EC_GROUP_get0_seed()
7025 EC_GROUP_get_seed_len()
7026 This is used only for ASN1 purposes (so far).
7027 [Nils Larsch <nla@trustcenter.de>]
7029 *) Add 'field_type' member to EC_METHOD, which holds the NID
7030 of the appropriate field type OID. The new function
7031 EC_METHOD_get_field_type() returns this value.
7032 [Nils Larsch <nla@trustcenter.de>]
7037 EC_POINT_point2hex()
7038 EC_POINT_hex2point()
7039 providing useful interfaces to EC_POINT_point2oct() and
7040 EC_POINT_oct2point().
7041 [Nils Larsch <nla@trustcenter.de>]
7043 *) Change internals of the EC library so that the functions
7044 EC_GROUP_set_generator()
7045 EC_GROUP_get_generator()
7046 EC_GROUP_get_order()
7047 EC_GROUP_get_cofactor()
7048 are implemented directly in crypto/ec/ec_lib.c and not dispatched
7049 to methods, which would lead to unnecessary code duplication when
7050 adding different types of curves.
7051 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
7053 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
7054 arithmetic, and such that modified wNAFs are generated
7055 (which avoid length expansion in many cases).
7058 *) Add a function EC_GROUP_check_discriminant() (defined via
7059 EC_METHOD) that verifies that the curve discriminant is non-zero.
7061 Add a function EC_GROUP_check() that makes some sanity tests
7062 on a EC_GROUP, its generator and order. This includes
7063 EC_GROUP_check_discriminant().
7064 [Nils Larsch <nla@trustcenter.de>]
7066 *) Add ECDSA in new directory crypto/ecdsa/.
7068 Add applications 'openssl ecparam' and 'openssl ecdsa'
7069 (these are based on 'openssl dsaparam' and 'openssl dsa').
7071 ECDSA support is also included in various other files across the
7072 library. Most notably,
7073 - 'openssl req' now has a '-newkey ecdsa:file' option;
7074 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
7075 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
7076 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
7077 them suitable for ECDSA where domain parameters must be
7078 extracted before the specific public key;
7079 - ECDSA engine support has been added.
7080 [Nils Larsch <nla@trustcenter.de>]
7082 *) Include some named elliptic curves, and add OIDs from X9.62,
7083 SECG, and WAP/WTLS. Each curve can be obtained from the new
7085 EC_GROUP_new_by_curve_name(),
7086 and the list of available named curves can be obtained with
7087 EC_get_builtin_curves().
7088 Also add a 'curve_name' member to EC_GROUP objects, which can be
7090 EC_GROUP_set_curve_name()
7091 EC_GROUP_get_curve_name()
7092 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
7094 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
7095 was actually never needed) and in BN_mul(). The removal in BN_mul()
7096 required a small change in bn_mul_part_recursive() and the addition
7097 of the functions bn_cmp_part_words(), bn_sub_part_words() and
7098 bn_add_part_words(), which do the same thing as bn_cmp_words(),
7099 bn_sub_words() and bn_add_words() except they take arrays with
7103 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
7105 *) Cleanse PEM buffers before freeing them since they may contain
7107 [Benjamin Bennett <ben@psc.edu>]
7109 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
7110 a ciphersuite string such as "DEFAULT:RSA" cannot enable
7111 authentication-only ciphersuites.
7114 *) Since AES128 and AES256 share a single mask bit in the logic of
7115 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
7116 kludge to work properly if AES128 is available and AES256 isn't.
7119 *) Expand security boundary to match 1.1.1 module.
7122 *) Remove redundant features: hash file source, editing of test vectors
7123 modify fipsld to use external fips_premain.c signature.
7126 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
7127 run algorithm test programs.
7130 *) Make algorithm test programs more tolerant of whitespace.
7133 *) Have SSL/TLS server implementation tolerate "mismatched" record
7134 protocol version while receiving ClientHello even if the
7135 ClientHello is fragmented. (The server can't insist on the
7136 particular protocol version it has chosen before the ServerHello
7137 message has informed the client about his choice.)
7140 *) Load error codes if they are not already present instead of using a
7141 static variable. This allows them to be cleanly unloaded and reloaded.
7144 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
7146 *) Introduce limits to prevent malicious keys being able to
7147 cause a denial of service. (CVE-2006-2940)
7148 [Steve Henson, Bodo Moeller]
7150 *) Fix ASN.1 parsing of certain invalid structures that can result
7151 in a denial of service. (CVE-2006-2937) [Steve Henson]
7153 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
7154 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
7156 *) Fix SSL client code which could crash if connecting to a
7157 malicious SSLv2 server. (CVE-2006-4343)
7158 [Tavis Ormandy and Will Drewry, Google Security Team]
7160 *) Change ciphersuite string processing so that an explicit
7161 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
7162 will no longer include "AES128-SHA"), and any other similar
7163 ciphersuite (same bitmap) from *other* protocol versions (so that
7164 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
7165 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
7166 changes from 0.9.8b and 0.9.8d.
7169 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
7171 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
7172 (CVE-2006-4339) [Ben Laurie and Google Security Team]
7174 *) Change the Unix randomness entropy gathering to use poll() when
7175 possible instead of select(), since the latter has some
7176 undesirable limitations.
7177 [Darryl Miles via Richard Levitte and Bodo Moeller]
7179 *) Disable rogue ciphersuites:
7181 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
7182 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
7183 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
7185 The latter two were purportedly from
7186 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
7189 Also deactivate the remaining ciphersuites from
7190 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
7191 unofficial, and the ID has long expired.
7194 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
7195 dual-core machines) and other potential thread-safety issues.
7198 Changes between 0.9.7i and 0.9.7j [04 May 2006]
7200 *) Adapt fipsld and the build system to link against the validated FIPS
7201 module in FIPS mode.
7204 *) Fixes for VC++ 2005 build under Windows.
7207 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
7208 from a Windows bash shell such as MSYS. It is autodetected from the
7209 "config" script when run from a VC++ environment. Modify standard VC++
7210 build to use fipscanister.o from the GNU make build.
7213 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
7215 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
7216 The value now differs depending on if you build for FIPS or not.
7217 BEWARE! A program linked with a shared FIPSed libcrypto can't be
7218 safely run with a non-FIPSed libcrypto, as it may crash because of
7219 the difference induced by this change.
7222 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
7224 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
7225 (part of SSL_OP_ALL). This option used to disable the
7226 countermeasure against man-in-the-middle protocol-version
7227 rollback in the SSL 2.0 server implementation, which is a bad
7228 idea. (CVE-2005-2969)
7230 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
7231 for Information Security, National Institute of Advanced Industrial
7232 Science and Technology [AIST], Japan)]
7234 *) Minimal support for X9.31 signatures and PSS padding modes. This is
7235 mainly for FIPS compliance and not fully integrated at this stage.
7238 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
7239 the exponentiation using a fixed-length exponent. (Otherwise,
7240 the information leaked through timing could expose the secret key
7241 after many signatures; cf. Bleichenbacher's attack on DSA with
7245 *) Make a new fixed-window mod_exp implementation the default for
7246 RSA, DSA, and DH private-key operations so that the sequence of
7247 squares and multiplies and the memory access pattern are
7248 independent of the particular secret key. This will mitigate
7249 cache-timing and potential related attacks.
7251 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
7252 and this is automatically used by BN_mod_exp_mont() if the new flag
7253 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
7254 will use this BN flag for private exponents unless the flag
7255 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
7256 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
7258 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
7260 *) Change the client implementation for SSLv23_method() and
7261 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
7262 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
7263 (Previously, the SSL 2.0 backwards compatible Client Hello
7264 message format would be used even with SSL_OP_NO_SSLv2.)
7267 *) Add support for smime-type MIME parameter in S/MIME messages which some
7271 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
7272 a threadsafe manner. Modify rsa code to use new function and add calls
7273 to dsa and dh code (which had race conditions before).
7276 *) Include the fixed error library code in the C error file definitions
7277 instead of fixing them up at runtime. This keeps the error code
7278 structures constant.
7281 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
7283 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
7286 *) Fixes for newer kerberos headers. NB: the casts are needed because
7287 the 'length' field is signed on one version and unsigned on another
7288 with no (?) obvious way to tell the difference, without these VC++
7289 complains. Also the "definition" of FAR (blank) is no longer included
7290 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
7291 some needed definitions.
7294 *) Undo Cygwin change.
7297 *) Added support for proxy certificates according to RFC 3820.
7298 Because they may be a security thread to unaware applications,
7299 they must be explicitly allowed in run-time. See
7300 docs/HOWTO/proxy_certificates.txt for further information.
7303 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
7305 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
7306 server and client random values. Previously
7307 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
7308 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
7310 This change has negligible security impact because:
7312 1. Server and client random values still have 24 bytes of pseudo random
7315 2. Server and client random values are sent in the clear in the initial
7318 3. The master secret is derived using the premaster secret (48 bytes in
7319 size for static RSA ciphersuites) as well as client server and random
7322 The OpenSSL team would like to thank the UK NISCC for bringing this issue
7325 [Stephen Henson, reported by UK NISCC]
7327 *) Use Windows randomness collection on Cygwin.
7330 *) Fix hang in EGD/PRNGD query when communication socket is closed
7331 prematurely by EGD/PRNGD.
7332 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
7334 *) Prompt for pass phrases when appropriate for PKCS12 input format.
7337 *) Back-port of selected performance improvements from development
7338 branch, as well as improved support for PowerPC platforms.
7341 *) Add lots of checks for memory allocation failure, error codes to indicate
7342 failure and freeing up memory if a failure occurs.
7343 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
7345 *) Add new -passin argument to dgst.
7348 *) Perform some character comparisons of different types in X509_NAME_cmp:
7349 this is needed for some certificates that re-encode DNs into UTF8Strings
7350 (in violation of RFC3280) and can't or won't issue name rollover
7354 *) Make an explicit check during certificate validation to see that
7355 the CA setting in each certificate on the chain is correct. As a
7356 side effect always do the following basic checks on extensions,
7357 not just when there's an associated purpose to the check:
7359 - if there is an unhandled critical extension (unless the user
7360 has chosen to ignore this fault)
7361 - if the path length has been exceeded (if one is set at all)
7362 - that certain extensions fit the associated purpose (if one has
7366 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
7368 *) Avoid a race condition when CRLs are checked in a multi threaded
7369 environment. This would happen due to the reordering of the revoked
7370 entries during signature checking and serial number lookup. Now the
7371 encoding is cached and the serial number sort performed under a lock.
7372 Add new STACK function sk_is_sorted().
7375 *) Add Delta CRL to the extension code.
7378 *) Various fixes to s3_pkt.c so alerts are sent properly.
7379 [David Holmes <d.holmes@f5.com>]
7381 *) Reduce the chances of duplicate issuer name and serial numbers (in
7382 violation of RFC3280) using the OpenSSL certificate creation utilities.
7383 This is done by creating a random 64 bit value for the initial serial
7384 number when a serial number file is created or when a self signed
7385 certificate is created using 'openssl req -x509'. The initial serial
7386 number file is created using 'openssl x509 -next_serial' in CA.pl
7387 rather than being initialized to 1.
7390 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
7392 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7393 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7394 [Joe Orton, Steve Henson]
7396 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
7398 [Joe Orton, Steve Henson]
7400 *) Make it possible to have multiple active certificates with the same
7401 subject in the CA index file. This is done only if the keyword
7402 'unique_subject' is set to 'no' in the main CA section (default
7403 if 'CA_default') of the configuration file. The value is saved
7404 with the database itself in a separate index attribute file,
7405 named like the index file with '.attr' appended to the name.
7408 *) X509 verify fixes. Disable broken certificate workarounds when
7409 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
7410 keyUsage extension present. Don't accept CRLs with unhandled critical
7411 extensions: since verify currently doesn't process CRL extensions this
7412 rejects a CRL with *any* critical extensions. Add new verify error codes
7416 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
7417 A clarification of RFC2560 will require the use of OCTET STRINGs and
7418 some implementations cannot handle the current raw format. Since OpenSSL
7419 copies and compares OCSP nonces as opaque blobs without any attempt at
7420 parsing them this should not create any compatibility issues.
7423 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
7424 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
7425 this HMAC (and other) operations are several times slower than OpenSSL
7429 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
7430 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7432 *) Use the correct content when signing type "other".
7435 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
7437 *) Fix various bugs revealed by running the NISCC test suite:
7439 Stop out of bounds reads in the ASN1 code when presented with
7440 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7442 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
7444 If verify callback ignores invalid public key errors don't try to check
7445 certificate signature with the NULL public key.
7449 *) New -ignore_err option in ocsp application to stop the server
7450 exiting on the first error in a request.
7453 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7454 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7458 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7459 extra data after the compression methods not only for TLS 1.0
7460 but also for SSL 3.0 (as required by the specification).
7461 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7463 *) Change X509_certificate_type() to mark the key as exported/exportable
7464 when it's 512 *bits* long, not 512 bytes.
7467 *) Change AES_cbc_encrypt() so it outputs exact multiple of
7468 blocks during encryption.
7471 *) Various fixes to base64 BIO and non blocking I/O. On write
7472 flushes were not handled properly if the BIO retried. On read
7473 data was not being buffered properly and had various logic bugs.
7474 This also affects blocking I/O when the data being decoded is a
7478 *) Various S/MIME bugfixes and compatibility changes:
7479 output correct application/pkcs7 MIME type if
7480 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
7481 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
7482 of files as .eml work). Correctly handle very long lines in MIME
7486 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
7488 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7489 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7490 a protocol version number mismatch like a decryption error
7491 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7494 *) Turn on RSA blinding by default in the default implementation
7495 to avoid a timing attack. Applications that don't want it can call
7496 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7497 They would be ill-advised to do so in most cases.
7498 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7500 *) Change RSA blinding code so that it works when the PRNG is not
7501 seeded (in this case, the secret RSA exponent is abused as
7502 an unpredictable seed -- if it is not unpredictable, there
7503 is no point in blinding anyway). Make RSA blinding thread-safe
7504 by remembering the creator's thread ID in rsa->blinding and
7505 having all other threads use local one-time blinding factors
7506 (this requires more computation than sharing rsa->blinding, but
7507 avoids excessive locking; and if an RSA object is not shared
7508 between threads, blinding will still be very fast).
7511 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
7512 ENGINE as defaults for all supported algorithms irrespective of
7513 the 'flags' parameter. 'flags' is now honoured, so applications
7514 should make sure they are passing it correctly.
7517 *) Target "mingw" now allows native Windows code to be generated in
7518 the Cygwin environment as well as with the MinGW compiler.
7521 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
7523 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7524 via timing by performing a MAC computation even if incorrect
7525 block cipher padding has been found. This is a countermeasure
7526 against active attacks where the attacker has to distinguish
7527 between bad padding and a MAC verification error. (CVE-2003-0078)
7529 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7530 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7531 Martin Vuagnoux (EPFL, Ilion)]
7533 *) Make the no-err option work as intended. The intention with no-err
7534 is not to have the whole error stack handling routines removed from
7535 libcrypto, it's only intended to remove all the function name and
7536 reason texts, thereby removing some of the footprint that may not
7537 be interesting if those errors aren't displayed anyway.
7539 NOTE: it's still possible for any application or module to have its
7540 own set of error texts inserted. The routines are there, just not
7541 used by default when no-err is given.
7544 *) Add support for FreeBSD on IA64.
7545 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
7547 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
7548 Kerberos function mit_des_cbc_cksum(). Before this change,
7549 the value returned by DES_cbc_cksum() was like the one from
7550 mit_des_cbc_cksum(), except the bytes were swapped.
7551 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
7553 *) Allow an application to disable the automatic SSL chain building.
7554 Before this a rather primitive chain build was always performed in
7555 ssl3_output_cert_chain(): an application had no way to send the
7556 correct chain if the automatic operation produced an incorrect result.
7558 Now the chain builder is disabled if either:
7560 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
7562 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
7564 The reasoning behind this is that an application would not want the
7565 auto chain building to take place if extra chain certificates are
7566 present and it might also want a means of sending no additional
7567 certificates (for example the chain has two certificates and the
7571 *) Add the possibility to build without the ENGINE framework.
7572 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7574 *) Under Win32 gmtime() can return NULL: check return value in
7575 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
7578 *) DSA routines: under certain error conditions uninitialized BN objects
7579 could be freed. Solution: make sure initialization is performed early
7580 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
7581 Nils Larsch <nla@trustcenter.de> via PR#459)
7584 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
7585 checked on reconnect on the client side, therefore session resumption
7586 could still fail with a "ssl session id is different" error. This
7587 behaviour is masked when SSL_OP_ALL is used due to
7588 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
7589 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7590 followup to PR #377.
7593 *) IA-32 assembler support enhancements: unified ELF targets, support
7594 for SCO/Caldera platforms, fix for Cygwin shared build.
7597 *) Add support for FreeBSD on sparc64. As a consequence, support for
7598 FreeBSD on non-x86 processors is separate from x86 processors on
7599 the config script, much like the NetBSD support.
7600 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
7602 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
7604 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
7607 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
7608 code (06) was taken as the first octet of the session ID and the last
7609 octet was ignored consequently. As a result SSLv2 client side session
7610 caching could not have worked due to the session ID mismatch between
7612 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7616 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
7617 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
7621 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
7622 seems that in spite of existing for more than a year, many application
7623 author have done nothing to provide the necessary callbacks, which
7624 means that this particular engine will not work properly anywhere.
7625 This is a very unfortunate situation which forces us, in the name
7626 of usability, to give the hw_ncipher.c a static lock, which is part
7628 NOTE: This is for the 0.9.7 series ONLY. This hack will never
7629 appear in 0.9.8 or later. We EXPECT application authors to have
7630 dealt properly with this when 0.9.8 is released (unless we actually
7631 make such changes in the libcrypto locking code that changes will
7632 have to be made anyway).
7635 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
7636 octets have been read, EOF or an error occurs. Without this change
7637 some truncated ASN1 structures will not produce an error.
7640 *) Disable Heimdal support, since it hasn't been fully implemented.
7641 Still give the possibility to force the use of Heimdal, but with
7642 warnings and a request that patches get sent to openssl-dev.
7645 *) Add the VC-CE target, introduce the WINCE sysname, and add
7646 INSTALL.WCE and appropriate conditionals to make it build.
7647 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7649 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
7650 cygssl-x.y.z.dll, where x, y and z are the major, minor and
7651 edit numbers of the version.
7652 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7654 *) Introduce safe string copy and catenation functions
7655 (BUF_strlcpy() and BUF_strlcat()).
7656 [Ben Laurie (CHATS) and Richard Levitte]
7658 *) Avoid using fixed-size buffers for one-line DNs.
7659 [Ben Laurie (CHATS)]
7661 *) Add BUF_MEM_grow_clean() to avoid information leakage when
7662 resizing buffers containing secrets, and use where appropriate.
7663 [Ben Laurie (CHATS)]
7665 *) Avoid using fixed size buffers for configuration file location.
7666 [Ben Laurie (CHATS)]
7668 *) Avoid filename truncation for various CA files.
7669 [Ben Laurie (CHATS)]
7671 *) Use sizeof in preference to magic numbers.
7672 [Ben Laurie (CHATS)]
7674 *) Avoid filename truncation in cert requests.
7675 [Ben Laurie (CHATS)]
7677 *) Add assertions to check for (supposedly impossible) buffer
7679 [Ben Laurie (CHATS)]
7681 *) Don't cache truncated DNS entries in the local cache (this could
7682 potentially lead to a spoofing attack).
7683 [Ben Laurie (CHATS)]
7685 *) Fix various buffers to be large enough for hex/decimal
7686 representations in a platform independent manner.
7687 [Ben Laurie (CHATS)]
7689 *) Add CRYPTO_realloc_clean() to avoid information leakage when
7690 resizing buffers containing secrets, and use where appropriate.
7691 [Ben Laurie (CHATS)]
7693 *) Add BIO_indent() to avoid much slightly worrying code to do
7695 [Ben Laurie (CHATS)]
7697 *) Convert sprintf()/BIO_puts() to BIO_printf().
7698 [Ben Laurie (CHATS)]
7700 *) buffer_gets() could terminate with the buffer only half
7702 [Ben Laurie (CHATS)]
7704 *) Add assertions to prevent user-supplied crypto functions from
7705 overflowing internal buffers by having large block sizes, etc.
7706 [Ben Laurie (CHATS)]
7708 *) New OPENSSL_assert() macro (similar to assert(), but enabled
7710 [Ben Laurie (CHATS)]
7712 *) Eliminate unused copy of key in RC4.
7713 [Ben Laurie (CHATS)]
7715 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
7716 [Ben Laurie (CHATS)]
7718 *) Fix off-by-one error in EGD path.
7719 [Ben Laurie (CHATS)]
7721 *) If RANDFILE path is too long, ignore instead of truncating.
7722 [Ben Laurie (CHATS)]
7724 *) Eliminate unused and incorrectly sized X.509 structure
7726 [Ben Laurie (CHATS)]
7728 *) Eliminate unused and dangerous function knumber().
7729 [Ben Laurie (CHATS)]
7731 *) Eliminate unused and dangerous structure, KSSL_ERR.
7732 [Ben Laurie (CHATS)]
7734 *) Protect against overlong session ID context length in an encoded
7735 session object. Since these are local, this does not appear to be
7737 [Ben Laurie (CHATS)]
7739 *) Change from security patch (see 0.9.6e below) that did not affect
7740 the 0.9.6 release series:
7742 Remote buffer overflow in SSL3 protocol - an attacker could
7743 supply an oversized master key in Kerberos-enabled versions.
7745 [Ben Laurie (CHATS)]
7747 *) Change the SSL kerb5 codes to match RFC 2712.
7750 *) Make -nameopt work fully for req and add -reqopt switch.
7751 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
7753 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
7754 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
7756 *) Make sure tests can be performed even if the corresponding algorithms
7757 have been removed entirely. This was also the last step to make
7758 OpenSSL compilable with DJGPP under all reasonable conditions.
7759 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
7761 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
7762 to allow version independent disabling of normally unselected ciphers,
7763 which may be activated as a side-effect of selecting a single cipher.
7765 (E.g., cipher list string "RSA" enables ciphersuites that are left
7766 out of "ALL" because they do not provide symmetric encryption.
7767 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
7768 [Lutz Jaenicke, Bodo Moeller]
7770 *) Add appropriate support for separate platform-dependent build
7771 directories. The recommended way to make a platform-dependent
7772 build directory is the following (tested on Linux), maybe with
7775 # Place yourself outside of the OpenSSL source tree. In
7776 # this example, the environment variable OPENSSL_SOURCE
7777 # is assumed to contain the absolute OpenSSL source directory.
7778 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
7779 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
7780 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
7781 mkdir -p `dirname $F`
7782 ln -s $OPENSSL_SOURCE/$F $F
7785 To be absolutely sure not to disturb the source tree, a "make clean"
7786 is a good thing. If it isn't successful, don't worry about it,
7787 it probably means the source directory is very clean.
7790 *) Make sure any ENGINE control commands make local copies of string
7791 pointers passed to them whenever necessary. Otherwise it is possible
7792 the caller may have overwritten (or deallocated) the original string
7793 data when a later ENGINE operation tries to use the stored values.
7794 [Götz Babin-Ebell <babinebell@trustcenter.de>]
7796 *) Improve diagnostics in file reading and command-line digests.
7797 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
7799 *) Add AES modes CFB and OFB to the object database. Correct an
7800 error in AES-CFB decryption.
7803 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
7804 allows existing EVP_CIPHER_CTX structures to be reused after
7805 calling EVP_*Final(). This behaviour is used by encryption
7806 BIOs and some applications. This has the side effect that
7807 applications must explicitly clean up cipher contexts with
7808 EVP_CIPHER_CTX_cleanup() or they will leak memory.
7811 *) Check the values of dna and dnb in bn_mul_recursive before calling
7812 bn_mul_comba (a non zero value means the a or b arrays do not contain
7813 n2 elements) and fallback to bn_mul_normal if either is not zero.
7816 *) Fix escaping of non-ASCII characters when using the -subj option
7817 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
7820 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
7821 form for "surname", serialNumber has no short form.
7822 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
7823 therefore remove "mail" short name for "internet 7".
7824 The OID for unique identifiers in X509 certificates is
7825 x500UniqueIdentifier, not uniqueIdentifier.
7826 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
7829 *) Add an "init" command to the ENGINE config module and auto initialize
7830 ENGINEs. Without any "init" command the ENGINE will be initialized
7831 after all ctrl commands have been executed on it. If init=1 the
7832 ENGINE is initialized at that point (ctrls before that point are run
7833 on the uninitialized ENGINE and after on the initialized one). If
7834 init=0 then the ENGINE will not be initialized at all.
7837 *) Fix the 'app_verify_callback' interface so that the user-defined
7838 argument is actually passed to the callback: In the
7839 SSL_CTX_set_cert_verify_callback() prototype, the callback
7840 declaration has been changed from
7843 int (*cb)(X509_STORE_CTX *,void *);
7844 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
7845 i=s->ctx->app_verify_callback(&ctx)
7846 has been changed into
7847 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
7849 To update applications using SSL_CTX_set_cert_verify_callback(),
7850 a dummy argument can be added to their callback functions.
7851 [D. K. Smetters <smetters@parc.xerox.com>]
7853 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
7854 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
7856 *) Add and OPENSSL_LOAD_CONF define which will cause
7857 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
7858 This allows older applications to transparently support certain
7859 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
7860 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
7861 load the config file and OPENSSL_add_all_algorithms_conf() which will
7862 always load it have also been added.
7865 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
7866 Adjust NIDs and EVP layer.
7867 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7869 *) Config modules support in openssl utility.
7871 Most commands now load modules from the config file,
7872 though in a few (such as version) this isn't done
7873 because it couldn't be used for anything.
7875 In the case of ca and req the config file used is
7876 the same as the utility itself: that is the -config
7877 command line option can be used to specify an
7881 *) Move default behaviour from OPENSSL_config(). If appname is NULL
7882 use "openssl_conf" if filename is NULL use default openssl config file.
7885 *) Add an argument to OPENSSL_config() to allow the use of an alternative
7886 config section name. Add a new flag to tolerate a missing config file
7887 and move code to CONF_modules_load_file().
7890 *) Support for crypto accelerator cards from Accelerated Encryption
7891 Processing, www.aep.ie. (Use engine 'aep')
7892 The support was copied from 0.9.6c [engine] and adapted/corrected
7893 to work with the new engine framework.
7894 [AEP Inc. and Richard Levitte]
7896 *) Support for SureWare crypto accelerator cards from Baltimore
7897 Technologies. (Use engine 'sureware')
7898 The support was copied from 0.9.6c [engine] and adapted
7899 to work with the new engine framework.
7902 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
7903 make the newer ENGINE framework commands for the CHIL engine work.
7904 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
7906 *) Make it possible to produce shared libraries on ReliantUNIX.
7907 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
7909 *) Add the configuration target debug-linux-ppro.
7910 Make 'openssl rsa' use the general key loading routines
7911 implemented in apps.c, and make those routines able to
7912 handle the key format FORMAT_NETSCAPE and the variant
7914 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7916 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7917 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7919 *) Add -keyform to rsautl, and document -engine.
7920 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
7922 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
7923 BIO_R_NO_SUCH_FILE error code rather than the generic
7924 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
7927 *) Add new functions
7929 ERR_peek_last_error_line
7930 ERR_peek_last_error_line_data.
7931 These are similar to
7934 ERR_peek_error_line_data,
7935 but report on the latest error recorded rather than the first one
7936 still in the error queue.
7937 [Ben Laurie, Bodo Moeller]
7939 *) default_algorithms option in ENGINE config module. This allows things
7941 default_algorithms = ALL
7942 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
7945 *) Preliminary ENGINE config module.
7948 *) New experimental application configuration code.
7951 *) Change the AES code to follow the same name structure as all other
7952 symmetric ciphers, and behave the same way. Move everything to
7953 the directory crypto/aes, thereby obsoleting crypto/rijndael.
7954 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7956 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
7957 [Ben Laurie and Theo de Raadt]
7959 *) Add option to output public keys in req command.
7960 [Massimiliano Pala madwolf@openca.org]
7962 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
7963 (up to about 10% better than before for P-192 and P-224).
7966 *) New functions/macros
7968 SSL_CTX_set_msg_callback(ctx, cb)
7969 SSL_CTX_set_msg_callback_arg(ctx, arg)
7970 SSL_set_msg_callback(ssl, cb)
7971 SSL_set_msg_callback_arg(ssl, arg)
7973 to request calling a callback function
7975 void cb(int write_p, int version, int content_type,
7976 const void *buf, size_t len, SSL *ssl, void *arg)
7978 whenever a protocol message has been completely received
7979 (write_p == 0) or sent (write_p == 1). Here 'version' is the
7980 protocol version according to which the SSL library interprets
7981 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
7982 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
7983 the content type as defined in the SSL 3.0/TLS 1.0 protocol
7984 specification (change_cipher_spec(20), alert(21), handshake(22)).
7985 'buf' and 'len' point to the actual message, 'ssl' to the
7986 SSL object, and 'arg' is the application-defined value set by
7987 SSL[_CTX]_set_msg_callback_arg().
7989 'openssl s_client' and 'openssl s_server' have new '-msg' options
7990 to enable a callback that displays all protocol messages.
7993 *) Change the shared library support so shared libraries are built as
7994 soon as the corresponding static library is finished, and thereby get
7995 openssl and the test programs linked against the shared library.
7996 This still only happens when the keyword "shard" has been given to
7997 the configuration scripts.
7999 NOTE: shared library support is still an experimental thing, and
8000 backward binary compatibility is still not guaranteed.
8001 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
8003 *) Add support for Subject Information Access extension.
8004 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
8006 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
8007 additional bytes when new memory had to be allocated, not just
8008 when reusing an existing buffer.
8011 *) New command line and configuration option 'utf8' for the req command.
8012 This allows field values to be specified as UTF8 strings.
8015 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
8016 runs for the former and machine-readable output for the latter.
8019 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
8020 of the e-mail address in the DN (i.e., it will go into a certificate
8021 extension only). The new configuration file option 'email_in_dn = no'
8022 has the same effect.
8023 [Massimiliano Pala madwolf@openca.org]
8025 *) Change all functions with names starting with des_ to be starting
8026 with DES_ instead. Add wrappers that are compatible with libdes,
8027 but are named _ossl_old_des_*. Finally, add macros that map the
8028 des_* symbols to the corresponding _ossl_old_des_* if libdes
8029 compatibility is desired. If OpenSSL 0.9.6c compatibility is
8030 desired, the des_* symbols will be mapped to DES_*, with one
8033 Since we provide two compatibility mappings, the user needs to
8034 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
8035 compatibility is desired. The default (i.e., when that macro
8036 isn't defined) is OpenSSL 0.9.6c compatibility.
8038 There are also macros that enable and disable the support of old
8039 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
8040 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
8041 are defined, the default will apply: to support the old des routines.
8043 In either case, one must include openssl/des.h to get the correct
8044 definitions. Do not try to just include openssl/des_old.h, that
8047 NOTE: This is a major break of an old API into a new one. Software
8048 authors are encouraged to switch to the DES_ style functions. Some
8049 time in the future, des_old.h and the libdes compatibility functions
8050 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
8051 default), and then completely removed.
8054 *) Test for certificates which contain unsupported critical extensions.
8055 If such a certificate is found during a verify operation it is
8056 rejected by default: this behaviour can be overridden by either
8057 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
8058 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
8059 X509_supported_extension() has also been added which returns 1 if a
8060 particular extension is supported.
8063 *) Modify the behaviour of EVP cipher functions in similar way to digests
8064 to retain compatibility with existing code.
8067 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
8068 compatibility with existing code. In particular the 'ctx' parameter does
8069 not have to be to be initialized before the call to EVP_DigestInit() and
8070 it is tidied up after a call to EVP_DigestFinal(). New function
8071 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
8072 EVP_MD_CTX_copy() changed to not require the destination to be
8073 initialized valid and new function EVP_MD_CTX_copy_ex() added which
8074 requires the destination to be valid.
8076 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
8077 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
8080 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
8081 so that complete 'Handshake' protocol structures are kept in memory
8082 instead of overwriting 'msg_type' and 'length' with 'body' data.
8085 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
8086 [Massimo Santin via Richard Levitte]
8088 *) Major restructuring to the underlying ENGINE code. This includes
8089 reduction of linker bloat, separation of pure "ENGINE" manipulation
8090 (initialisation, etc) from functionality dealing with implementations
8091 of specific crypto interfaces. This change also introduces integrated
8092 support for symmetric ciphers and digest implementations - so ENGINEs
8093 can now accelerate these by providing EVP_CIPHER and EVP_MD
8094 implementations of their own. This is detailed in crypto/engine/README
8095 as it couldn't be adequately described here. However, there are a few
8096 API changes worth noting - some RSA, DSA, DH, and RAND functions that
8097 were changed in the original introduction of ENGINE code have now
8098 reverted back - the hooking from this code to ENGINE is now a good
8099 deal more passive and at run-time, operations deal directly with
8100 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
8101 dereferencing through an ENGINE pointer any more. Also, the ENGINE
8102 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
8103 they were not being used by the framework as there is no concept of a
8104 BIGNUM_METHOD and they could not be generalised to the new
8105 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
8106 ENGINE_cpy() has been removed as it cannot be consistently defined in
8110 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
8113 *) Change mkdef.pl to sort symbols that get the same entry number,
8114 and make sure the automatically generated functions ERR_load_*
8115 become part of libeay.num as well.
8118 *) New function SSL_renegotiate_pending(). This returns true once
8119 renegotiation has been requested (either SSL_renegotiate() call
8120 or HelloRequest/ClientHello received from the peer) and becomes
8121 false once a handshake has been completed.
8122 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
8123 sends a HelloRequest, but does not ensure that a handshake takes
8124 place. SSL_renegotiate_pending() is useful for checking if the
8125 client has followed the request.)
8128 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
8129 By default, clients may request session resumption even during
8130 renegotiation (if session ID contexts permit); with this option,
8131 session resumption is possible only in the first handshake.
8133 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
8134 more bits available for options that should not be part of
8135 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
8138 *) Add some demos for certificate and certificate request creation.
8141 *) Make maximum certificate chain size accepted from the peer application
8142 settable (SSL*_get/set_max_cert_list()), as proposed by
8143 "Douglas E. Engert" <deengert@anl.gov>.
8146 *) Add support for shared libraries for Unixware-7
8147 (Boyd Lynn Gerber <gerberb@zenez.com>).
8150 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
8151 be done prior to destruction. Use this to unload error strings from
8152 ENGINEs that load their own error strings. NB: This adds two new API
8153 functions to "get" and "set" this destroy handler in an ENGINE.
8156 *) Alter all existing ENGINE implementations (except "openssl" and
8157 "openbsd") to dynamically instantiate their own error strings. This
8158 makes them more flexible to be built both as statically-linked ENGINEs
8159 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
8160 Also, add stub code to each that makes building them as self-contained
8161 shared-libraries easier (see README.ENGINE).
8164 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
8165 implementations into applications that are completely implemented in
8166 self-contained shared-libraries. The "dynamic" ENGINE exposes control
8167 commands that can be used to configure what shared-library to load and
8168 to control aspects of the way it is handled. Also, made an update to
8169 the README.ENGINE file that brings its information up-to-date and
8170 provides some information and instructions on the "dynamic" ENGINE
8171 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
8174 *) Make it possible to unload ranges of ERR strings with a new
8175 "ERR_unload_strings" function.
8178 *) Add a copy() function to EVP_MD.
8181 *) Make EVP_MD routines take a context pointer instead of just the
8182 md_data void pointer.
8185 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
8186 that the digest can only process a single chunk of data
8187 (typically because it is provided by a piece of
8188 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
8189 is only going to provide a single chunk of data, and hence the
8190 framework needn't accumulate the data for oneshot drivers.
8193 *) As with "ERR", make it possible to replace the underlying "ex_data"
8194 functions. This change also alters the storage and management of global
8195 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
8196 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
8197 index counters. The API functions that use this state have been changed
8198 to take a "class_index" rather than pointers to the class's local STACK
8199 and counter, and there is now an API function to dynamically create new
8200 classes. This centralisation allows us to (a) plug a lot of the
8201 thread-safety problems that existed, and (b) makes it possible to clean
8202 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
8203 such data would previously have always leaked in application code and
8204 workarounds were in place to make the memory debugging turn a blind eye
8205 to it. Application code that doesn't use this new function will still
8206 leak as before, but their memory debugging output will announce it now
8207 rather than letting it slide.
8209 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
8210 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
8211 has a return value to indicate success or failure.
8214 *) Make it possible to replace the underlying "ERR" functions such that the
8215 global state (2 LHASH tables and 2 locks) is only used by the "default"
8216 implementation. This change also adds two functions to "get" and "set"
8217 the implementation prior to it being automatically set the first time
8218 any other ERR function takes place. Ie. an application can call "get",
8219 pass the return value to a module it has just loaded, and that module
8220 can call its own "set" function using that value. This means the
8221 module's "ERR" operations will use (and modify) the error state in the
8222 application and not in its own statically linked copy of OpenSSL code.
8225 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
8226 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
8227 the operation, and provides a more encapsulated way for external code
8228 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
8229 to use these functions rather than manually incrementing the counts.
8231 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
8234 *) Add EVP test program.
8237 *) Add symmetric cipher support to ENGINE. Expect the API to change!
8240 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
8241 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
8242 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
8243 These allow a CRL to be built without having to access X509_CRL fields
8244 directly. Modify 'ca' application to use new functions.
8247 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
8248 bug workarounds. Rollback attack detection is a security feature.
8249 The problem will only arise on OpenSSL servers when TLSv1 is not
8250 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
8251 Software authors not wanting to support TLSv1 will have special reasons
8252 for their choice and can explicitly enable this option.
8253 [Bodo Moeller, Lutz Jaenicke]
8255 *) Rationalise EVP so it can be extended: don't include a union of
8256 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
8257 (similar to those existing for EVP_CIPHER_CTX).
8262 EVP_MD_CTX_init(&md); /* new function call */
8263 EVP_DigestInit(&md, EVP_sha1());
8264 EVP_DigestUpdate(&md, in, len);
8265 EVP_DigestFinal(&md, out, NULL);
8266 EVP_MD_CTX_cleanup(&md); /* new function call */
8270 *) Make DES key schedule conform to the usual scheme, as well as
8271 correcting its structure. This means that calls to DES functions
8272 now have to pass a pointer to a des_key_schedule instead of a
8273 plain des_key_schedule (which was actually always a pointer
8276 des_key_schedule ks;
8278 des_set_key_checked(..., &ks);
8279 des_ncbc_encrypt(..., &ks, ...);
8281 (Note that a later change renames 'des_...' into 'DES_...'.)
8284 *) Initial reduction of linker bloat: the use of some functions, such as
8285 PEM causes large amounts of unused functions to be linked in due to
8286 poor organisation. For example pem_all.c contains every PEM function
8287 which has a knock on effect of linking in large amounts of (unused)
8288 ASN1 code. Grouping together similar functions and splitting unrelated
8289 functions prevents this.
8292 *) Cleanup of EVP macros.
8295 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
8296 correct _ecb suffix.
8299 *) Add initial OCSP responder support to ocsp application. The
8300 revocation information is handled using the text based index
8301 use by the ca application. The responder can either handle
8302 requests generated internally, supplied in files (for example
8303 via a CGI script) or using an internal minimal server.
8306 *) Add configuration choices to get zlib compression for TLS.
8309 *) Changes to Kerberos SSL for RFC 2712 compliance:
8310 1. Implemented real KerberosWrapper, instead of just using
8311 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
8312 2. Implemented optional authenticator field of KerberosWrapper.
8314 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
8315 and authenticator structs; see crypto/krb5/.
8317 Generalized Kerberos calls to support multiple Kerberos libraries.
8318 [Vern Staats <staatsvr@asc.hpc.mil>,
8319 Jeffrey Altman <jaltman@columbia.edu>
8320 via Richard Levitte]
8322 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
8323 already does with RSA. testdsa.h now has 'priv_key/pub_key'
8324 values for each of the key sizes rather than having just
8325 parameters (and 'speed' generating keys each time).
8328 *) Speed up EVP routines.
8331 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
8332 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
8333 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
8334 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
8336 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
8337 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
8338 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
8341 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
8343 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
8346 *) Added the OS2-EMX target.
8347 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
8349 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
8350 to support NCONF routines in extension code. New function CONF_set_nconf()
8351 to allow functions which take an NCONF to also handle the old LHASH
8352 structure: this means that the old CONF compatible routines can be
8353 retained (in particular wrt extensions) without having to duplicate the
8354 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
8357 *) Enhance the general user interface with mechanisms for inner control
8358 and with possibilities to have yes/no kind of prompts.
8361 *) Change all calls to low level digest routines in the library and
8362 applications to use EVP. Add missing calls to HMAC_cleanup() and
8363 don't assume HMAC_CTX can be copied using memcpy().
8364 [Verdon Walker <VWalker@novell.com>, Steve Henson]
8366 *) Add the possibility to control engines through control names but with
8367 arbitrary arguments instead of just a string.
8368 Change the key loaders to take a UI_METHOD instead of a callback
8369 function pointer. NOTE: this breaks binary compatibility with earlier
8370 versions of OpenSSL [engine].
8371 Adapt the nCipher code for these new conditions and add a card insertion
8375 *) Enhance the general user interface with mechanisms to better support
8376 dialog box interfaces, application-defined prompts, the possibility
8377 to use defaults (for example default passwords from somewhere else)
8378 and interrupts/cancellations.
8381 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
8382 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
8385 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
8386 tidy up some unnecessarily weird code in 'sk_new()').
8387 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
8389 *) Change the key loading routines for ENGINEs to use the same kind
8390 callback (pem_password_cb) as all other routines that need this
8394 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
8395 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
8396 than this minimum value is recommended.
8399 *) New random seeder for OpenVMS, using the system process statistics
8400 that are easily reachable.
8403 *) Windows apparently can't transparently handle global
8404 variables defined in DLLs. Initialisations such as:
8406 const ASN1_ITEM *it = &ASN1_INTEGER_it;
8408 won't compile. This is used by the any applications that need to
8409 declare their own ASN1 modules. This was fixed by adding the option
8410 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
8411 needed for static libraries under Win32.
8414 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
8415 setting of purpose and trust fields. New X509_STORE trust and
8416 purpose functions and tidy up setting in other SSL functions.
8419 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
8420 structure. These are inherited by X509_STORE_CTX when it is
8421 initialised. This allows various defaults to be set in the
8422 X509_STORE structure (such as flags for CRL checking and custom
8423 purpose or trust settings) for functions which only use X509_STORE_CTX
8424 internally such as S/MIME.
8426 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
8427 trust settings if they are not set in X509_STORE. This allows X509_STORE
8428 purposes and trust (in S/MIME for example) to override any set by default.
8430 Add command line options for CRL checking to smime, s_client and s_server
8434 *) Initial CRL based revocation checking. If the CRL checking flag(s)
8435 are set then the CRL is looked up in the X509_STORE structure and
8436 its validity and signature checked, then if the certificate is found
8437 in the CRL the verify fails with a revoked error.
8439 Various new CRL related callbacks added to X509_STORE_CTX structure.
8441 Command line options added to 'verify' application to support this.
8443 This needs some additional work, such as being able to handle multiple
8444 CRLs with different times, extension based lookup (rather than just
8445 by subject name) and ultimately more complete V2 CRL extension
8449 *) Add a general user interface API (crypto/ui/). This is designed
8450 to replace things like des_read_password and friends (backward
8451 compatibility functions using this new API are provided).
8452 The purpose is to remove prompting functions from the DES code
8453 section as well as provide for prompting through dialog boxes in
8454 a window system and the like.
8457 *) Add "ex_data" support to ENGINE so implementations can add state at a
8458 per-structure level rather than having to store it globally.
8461 *) Make it possible for ENGINE structures to be copied when retrieved by
8462 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
8463 This causes the "original" ENGINE structure to act like a template,
8464 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
8465 operational state can be localised to each ENGINE structure, despite the
8466 fact they all share the same "methods". New ENGINE structures returned in
8467 this case have no functional references and the return value is the single
8468 structural reference. This matches the single structural reference returned
8469 by ENGINE_by_id() normally, when it is incremented on the pre-existing
8473 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
8474 needs to match any other type at all we need to manually clear the
8478 *) Changes to the "openssl engine" utility to include;
8479 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
8480 about an ENGINE's available control commands.
8481 - executing control commands from command line arguments using the
8482 '-pre' and '-post' switches. '-post' is only used if '-t' is
8483 specified and the ENGINE is successfully initialised. The syntax for
8484 the individual commands are colon-separated, for example;
8485 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
8488 *) New dynamic control command support for ENGINEs. ENGINEs can now
8489 declare their own commands (numbers), names (strings), descriptions,
8490 and input types for run-time discovery by calling applications. A
8491 subset of these commands are implicitly classed as "executable"
8492 depending on their input type, and only these can be invoked through
8493 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
8494 can be based on user input, config files, etc). The distinction is
8495 that "executable" commands cannot return anything other than a boolean
8496 result and can only support numeric or string input, whereas some
8497 discoverable commands may only be for direct use through
8498 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
8499 pointers, or other custom uses. The "executable" commands are to
8500 support parameterisations of ENGINE behaviour that can be
8501 unambiguously defined by ENGINEs and used consistently across any
8502 OpenSSL-based application. Commands have been added to all the
8503 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
8504 control over shared-library paths without source code alterations.
8507 *) Changed all ENGINE implementations to dynamically allocate their
8508 ENGINEs rather than declaring them statically. Apart from this being
8509 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
8510 this also allows the implementations to compile without using the
8511 internal engine_int.h header.
8514 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
8515 'const' value. Any code that should be able to modify a RAND_METHOD
8516 should already have non-const pointers to it (ie. they should only
8517 modify their own ones).
8520 *) Made a variety of little tweaks to the ENGINE code.
8521 - "atalla" and "ubsec" string definitions were moved from header files
8522 to C code. "nuron" string definitions were placed in variables
8523 rather than hard-coded - allowing parameterisation of these values
8524 later on via ctrl() commands.
8525 - Removed unused "#if 0"'d code.
8526 - Fixed engine list iteration code so it uses ENGINE_free() to release
8527 structural references.
8528 - Constified the RAND_METHOD element of ENGINE structures.
8529 - Constified various get/set functions as appropriate and added
8530 missing functions (including a catch-all ENGINE_cpy that duplicates
8531 all ENGINE values onto a new ENGINE except reference counts/state).
8532 - Removed NULL parameter checks in get/set functions. Setting a method
8533 or function to NULL is a way of cancelling out a previously set
8534 value. Passing a NULL ENGINE parameter is just plain stupid anyway
8535 and doesn't justify the extra error symbols and code.
8536 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
8537 flags from engine_int.h to engine.h.
8538 - Changed prototypes for ENGINE handler functions (init(), finish(),
8539 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
8542 *) Implement binary inversion algorithm for BN_mod_inverse in addition
8543 to the algorithm using long division. The binary algorithm can be
8544 used only if the modulus is odd. On 32-bit systems, it is faster
8545 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
8546 roughly 5-15% for 256-bit moduli), so we use it only for moduli
8547 up to 450 bits. In 64-bit environments, the binary algorithm
8548 appears to be advantageous for much longer moduli; here we use it
8549 for moduli up to 2048 bits.
8552 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
8553 could not support the combine flag in choice fields.
8556 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
8557 extensions from a certificate request to the certificate.
8560 *) Allow multiple 'certopt' and 'nameopt' options to be separated
8561 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
8562 file: this allows the display of the certificate about to be
8563 signed to be customised, to allow certain fields to be included
8564 or excluded and extension details. The old system didn't display
8565 multicharacter strings properly, omitted fields not in the policy
8566 and couldn't display additional details such as extensions.
8569 *) Function EC_POINTs_mul for multiple scalar multiplication
8570 of an arbitrary number of elliptic curve points
8571 \sum scalars[i]*points[i],
8572 optionally including the generator defined for the EC_GROUP:
8573 scalar*generator + \sum scalars[i]*points[i].
8575 EC_POINT_mul is a simple wrapper function for the typical case
8576 that the point list has just one item (besides the optional
8580 *) First EC_METHODs for curves over GF(p):
8582 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
8583 operations and provides various method functions that can also
8584 operate with faster implementations of modular arithmetic.
8586 EC_GFp_mont_method() reuses most functions that are part of
8587 EC_GFp_simple_method, but uses Montgomery arithmetic.
8589 [Bodo Moeller; point addition and point doubling
8590 implementation directly derived from source code provided by
8591 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
8593 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
8594 crypto/ec/ec_lib.c):
8596 Curves are EC_GROUP objects (with an optional group generator)
8597 based on EC_METHODs that are built into the library.
8599 Points are EC_POINT objects based on EC_GROUP objects.
8601 Most of the framework would be able to handle curves over arbitrary
8602 finite fields, but as there are no obvious types for fields other
8603 than GF(p), some functions are limited to that for now.
8606 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
8607 that the file contains a complete HTTP response.
8610 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
8611 change the def and num file printf format specifier from "%-40sXXX"
8612 to "%-39s XXX". The latter will always guarantee a space after the
8613 field while the former will cause them to run together if the field
8614 is 40 of more characters long.
8617 *) Constify the cipher and digest 'method' functions and structures
8618 and modify related functions to take constant EVP_MD and EVP_CIPHER
8622 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
8623 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
8626 *) Modify EVP_Digest*() routines so they now return values. Although the
8627 internal software routines can never fail additional hardware versions
8631 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
8633 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
8634 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
8637 ERR_R_NESTED_ASN1_ERROR
8639 ERR_R_MISSING_ASN1_EOS
8640 were 4 .. 9, conflicting with
8641 ERR_LIB_RSA (= ERR_R_RSA_LIB)
8643 ERR_LIB_PEM (= ERR_R_PEM_LIB).
8644 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
8646 Add new error code 'ERR_R_INTERNAL_ERROR'.
8649 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
8653 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
8654 sets the subject name for a new request or supersedes the
8655 subject name in a given request. Formats that can be parsed are
8656 'CN=Some Name, OU=myOU, C=IT'
8658 'CN=Some Name/OU=myOU/C=IT'.
8660 Add options '-batch' and '-verbose' to 'openssl req'.
8661 [Massimiliano Pala <madwolf@hackmasters.net>]
8663 *) Introduce the possibility to access global variables through
8664 functions on platform were that's the best way to handle exporting
8665 global variables in shared libraries. To enable this functionality,
8666 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
8667 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
8668 is normally done by Configure or something similar).
8670 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
8671 in the source file (foo.c) like this:
8673 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
8674 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
8676 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
8677 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
8679 OPENSSL_DECLARE_GLOBAL(int,foo);
8680 #define foo OPENSSL_GLOBAL_REF(foo)
8681 OPENSSL_DECLARE_GLOBAL(double,bar);
8682 #define bar OPENSSL_GLOBAL_REF(bar)
8684 The #defines are very important, and therefore so is including the
8685 header file everywhere where the defined globals are used.
8687 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
8688 of ASN.1 items, but that structure is a bit different.
8690 The largest change is in util/mkdef.pl which has been enhanced with
8691 better and easier to understand logic to choose which symbols should
8692 go into the Windows .def files as well as a number of fixes and code
8693 cleanup (among others, algorithm keywords are now sorted
8694 lexicographically to avoid constant rewrites).
8697 *) In BN_div() keep a copy of the sign of 'num' before writing the
8698 result to 'rm' because if rm==num the value will be overwritten
8699 and produce the wrong result if 'num' is negative: this caused
8700 problems with BN_mod() and BN_nnmod().
8703 *) Function OCSP_request_verify(). This checks the signature on an
8704 OCSP request and verifies the signer certificate. The signer
8705 certificate is just checked for a generic purpose and OCSP request
8709 *) Add OCSP_check_validity() function to check the validity of OCSP
8710 responses. OCSP responses are prepared in real time and may only
8711 be a few seconds old. Simply checking that the current time lies
8712 between thisUpdate and nextUpdate max reject otherwise valid responses
8713 caused by either OCSP responder or client clock inaccuracy. Instead
8714 we allow thisUpdate and nextUpdate to fall within a certain period of
8715 the current time. The age of the response can also optionally be
8716 checked. Two new options -validity_period and -status_age added to
8720 *) If signature or public key algorithm is unrecognized print out its
8721 OID rather that just UNKNOWN.
8724 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
8725 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
8726 ID to be generated from the issuer certificate alone which can then be
8727 passed to OCSP_id_issuer_cmp().
8730 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
8731 ASN1 modules to export functions returning ASN1_ITEM pointers
8732 instead of the ASN1_ITEM structures themselves. This adds several
8733 new macros which allow the underlying ASN1 function/structure to
8734 be accessed transparently. As a result code should not use ASN1_ITEM
8735 references directly (such as &X509_it) but instead use the relevant
8736 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
8737 use of the new ASN1 code on platforms where exporting structures
8738 is problematical (for example in shared libraries) but exporting
8739 functions returning pointers to structures is not.
8742 *) Add support for overriding the generation of SSL/TLS session IDs.
8743 These callbacks can be registered either in an SSL_CTX or per SSL.
8744 The purpose of this is to allow applications to control, if they wish,
8745 the arbitrary values chosen for use as session IDs, particularly as it
8746 can be useful for session caching in multiple-server environments. A
8747 command-line switch for testing this (and any client code that wishes
8748 to use such a feature) has been added to "s_server".
8749 [Geoff Thorpe, Lutz Jaenicke]
8751 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
8752 of the form '#if defined(...) || defined(...) || ...' and
8753 '#if !defined(...) && !defined(...) && ...'. This also avoids
8754 the growing number of special cases it was previously handling.
8757 *) Make all configuration macros available for application by making
8758 sure they are available in opensslconf.h, by giving them names starting
8759 with "OPENSSL_" to avoid conflicts with other packages and by making
8760 sure e_os2.h will cover all platform-specific cases together with
8762 Additionally, it is now possible to define configuration/platform-
8763 specific names (called "system identities"). In the C code, these
8764 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
8765 macro with the name beginning with "OPENSSL_SYS_", which is determined
8766 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
8770 *) New option -set_serial to 'req' and 'x509' this allows the serial
8771 number to use to be specified on the command line. Previously self
8772 signed certificates were hard coded with serial number 0 and the
8773 CA options of 'x509' had to use a serial number in a file which was
8777 *) New options to 'ca' utility to support V2 CRL entry extensions.
8778 Currently CRL reason, invalidity date and hold instruction are
8779 supported. Add new CRL extensions to V3 code and some new objects.
8782 *) New function EVP_CIPHER_CTX_set_padding() this is used to
8783 disable standard block padding (aka PKCS#5 padding) in the EVP
8784 API, which was previously mandatory. This means that the data is
8785 not padded in any way and so the total length much be a multiple
8786 of the block size, otherwise an error occurs.
8789 *) Initial (incomplete) OCSP SSL support.
8792 *) New function OCSP_parse_url(). This splits up a URL into its host,
8793 port and path components: primarily to parse OCSP URLs. New -url
8794 option to ocsp utility.
8797 *) New nonce behavior. The return value of OCSP_check_nonce() now
8798 reflects the various checks performed. Applications can decide
8799 whether to tolerate certain situations such as an absent nonce
8800 in a response when one was present in a request: the ocsp application
8801 just prints out a warning. New function OCSP_add1_basic_nonce()
8802 this is to allow responders to include a nonce in a response even if
8803 the request is nonce-less.
8806 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
8807 skipped when using openssl x509 multiple times on a single input file,
8808 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
8811 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
8812 set string type: to handle setting ASN1_TIME structures. Fix ca
8813 utility to correctly initialize revocation date of CRLs.
8816 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
8817 the clients preferred ciphersuites and rather use its own preferences.
8818 Should help to work around M$ SGC (Server Gated Cryptography) bug in
8819 Internet Explorer by ensuring unchanged hash method during stepup.
8820 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
8823 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
8824 to aes and add a new 'exist' option to print out symbols that don't
8828 *) Additional options to ocsp utility to allow flags to be set and
8829 additional certificates supplied.
8832 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
8833 OCSP client a number of certificate to only verify the response
8837 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
8838 handle the new API. Currently only ECB, CBC modes supported. Add new
8841 Add TLS AES ciphersuites as described in RFC3268, "Advanced
8842 Encryption Standard (AES) Ciphersuites for Transport Layer
8843 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
8844 not enabled by default and were not part of the "ALL" ciphersuite
8845 alias because they were not yet official; they could be
8846 explicitly requested by specifying the "AESdraft" ciphersuite
8847 group alias. In the final release of OpenSSL 0.9.7, the group
8848 alias is called "AES" and is part of "ALL".)
8849 [Ben Laurie, Steve Henson, Bodo Moeller]
8851 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
8852 request to response.
8855 *) Functions for OCSP responders. OCSP_request_onereq_count(),
8856 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
8857 extract information from a certificate request. OCSP_response_create()
8858 creates a response and optionally adds a basic response structure.
8859 OCSP_basic_add1_status() adds a complete single response to a basic
8860 response and returns the OCSP_SINGLERESP structure just added (to allow
8861 extensions to be included for example). OCSP_basic_add1_cert() adds a
8862 certificate to a basic response and OCSP_basic_sign() signs a basic
8863 response with various flags. New helper functions ASN1_TIME_check()
8864 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
8865 (converts ASN1_TIME to GeneralizedTime).
8868 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
8869 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
8870 structure from a certificate. X509_pubkey_digest() digests the public_key
8871 contents: this is used in various key identifiers.
8874 *) Make sk_sort() tolerate a NULL argument.
8875 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
8877 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
8878 passed by the function are trusted implicitly. If any of them signed the
8879 response then it is assumed to be valid and is not verified.
8882 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
8883 to data. This was previously part of the PKCS7 ASN1 code. This
8884 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
8885 [Steve Henson, reported by Kenneth R. Robinette
8886 <support@securenetterm.com>]
8888 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
8889 routines: without these tracing memory leaks is very painful.
8890 Fix leaks in PKCS12 and PKCS7 routines.
8893 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
8894 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
8895 effectively meant GeneralizedTime would never be used. Now it
8896 is initialised to -1 but X509_time_adj() now has to check the value
8897 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
8898 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
8899 [Steve Henson, reported by Kenneth R. Robinette
8900 <support@securenetterm.com>]
8902 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
8903 result in a zero length in the ASN1_INTEGER structure which was
8904 not consistent with the structure when d2i_ASN1_INTEGER() was used
8905 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
8906 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
8907 where it did not print out a minus for negative ASN1_INTEGER.
8910 *) Add summary printout to ocsp utility. The various functions which
8911 convert status values to strings have been renamed to:
8912 OCSP_response_status_str(), OCSP_cert_status_str() and
8913 OCSP_crl_reason_str() and are no longer static. New options
8914 to verify nonce values and to disable verification. OCSP response
8915 printout format cleaned up.
8918 *) Add additional OCSP certificate checks. These are those specified
8919 in RFC2560. This consists of two separate checks: the CA of the
8920 certificate being checked must either be the OCSP signer certificate
8921 or the issuer of the OCSP signer certificate. In the latter case the
8922 OCSP signer certificate must contain the OCSP signing extended key
8923 usage. This check is performed by attempting to match the OCSP
8924 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
8925 in the OCSP_CERTID structures of the response.
8928 *) Initial OCSP certificate verification added to OCSP_basic_verify()
8929 and related routines. This uses the standard OpenSSL certificate
8930 verify routines to perform initial checks (just CA validity) and
8931 to obtain the certificate chain. Then additional checks will be
8932 performed on the chain. Currently the root CA is checked to see
8933 if it is explicitly trusted for OCSP signing. This is used to set
8934 a root CA as a global signing root: that is any certificate that
8935 chains to that CA is an acceptable OCSP signing certificate.
8938 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
8939 extensions from a separate configuration file.
8940 As when reading extensions from the main configuration file,
8941 the '-extensions ...' option may be used for specifying the
8943 [Massimiliano Pala <madwolf@comune.modena.it>]
8945 *) New OCSP utility. Allows OCSP requests to be generated or
8946 read. The request can be sent to a responder and the output
8947 parsed, outputted or printed in text form. Not complete yet:
8948 still needs to check the OCSP response validity.
8951 *) New subcommands for 'openssl ca':
8952 'openssl ca -status <serial>' prints the status of the cert with
8953 the given serial number (according to the index file).
8954 'openssl ca -updatedb' updates the expiry status of certificates
8956 [Massimiliano Pala <madwolf@comune.modena.it>]
8958 *) New '-newreq-nodes' command option to CA.pl. This is like
8959 '-newreq', but calls 'openssl req' with the '-nodes' option
8960 so that the resulting key is not encrypted.
8961 [Damien Miller <djm@mindrot.org>]
8963 *) New configuration for the GNU Hurd.
8964 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
8966 *) Initial code to implement OCSP basic response verify. This
8967 is currently incomplete. Currently just finds the signer's
8968 certificate and verifies the signature on the response.
8971 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
8972 value of OPENSSLDIR. This is available via the new '-d' option
8973 to 'openssl version', and is also included in 'openssl version -a'.
8976 *) Allowing defining memory allocation callbacks that will be given
8977 file name and line number information in additional arguments
8978 (a const char* and an int). The basic functionality remains, as
8979 well as the original possibility to just replace malloc(),
8980 realloc() and free() by functions that do not know about these
8981 additional arguments. To register and find out the current
8982 settings for extended allocation functions, the following
8983 functions are provided:
8985 CRYPTO_set_mem_ex_functions
8986 CRYPTO_set_locked_mem_ex_functions
8987 CRYPTO_get_mem_ex_functions
8988 CRYPTO_get_locked_mem_ex_functions
8990 These work the same way as CRYPTO_set_mem_functions and friends.
8991 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
8992 extended allocation function is enabled.
8993 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
8994 a conventional allocation function is enabled.
8995 [Richard Levitte, Bodo Moeller]
8997 *) Finish off removing the remaining LHASH function pointer casts.
8998 There should no longer be any prototype-casting required when using
8999 the LHASH abstraction, and any casts that remain are "bugs". See
9000 the callback types and macros at the head of lhash.h for details
9001 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
9004 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
9005 If /dev/[u]random devices are not available or do not return enough
9006 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
9008 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
9009 /etc/entropy will be queried once each in this sequence, querying stops
9010 when enough entropy was collected without querying more sockets.
9013 *) Change the Unix RAND_poll() variant to be able to poll several
9014 random devices, as specified by DEVRANDOM, until a sufficient amount
9015 of data has been collected. We spend at most 10 ms on each file
9016 (select timeout) and read in non-blocking mode. DEVRANDOM now
9017 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
9018 (previously it was just the string "/dev/urandom"), so on typical
9019 platforms the 10 ms delay will never occur.
9020 Also separate out the Unix variant to its own file, rand_unix.c.
9021 For VMS, there's a currently-empty rand_vms.c.
9024 *) Move OCSP client related routines to ocsp_cl.c. These
9025 provide utility functions which an application needing
9026 to issue a request to an OCSP responder and analyse the
9027 response will typically need: as opposed to those which an
9028 OCSP responder itself would need which will be added later.
9030 OCSP_request_sign() signs an OCSP request with an API similar
9031 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
9032 response. OCSP_response_get1_basic() extracts basic response
9033 from response. OCSP_resp_find_status(): finds and extracts status
9034 information from an OCSP_CERTID structure (which will be created
9035 when the request structure is built). These are built from lower
9036 level functions which work on OCSP_SINGLERESP structures but
9037 won't normally be used unless the application wishes to examine
9038 extensions in the OCSP response for example.
9040 Replace nonce routines with a pair of functions.
9041 OCSP_request_add1_nonce() adds a nonce value and optionally
9042 generates a random value. OCSP_check_nonce() checks the
9043 validity of the nonce in an OCSP response.
9046 *) Change function OCSP_request_add() to OCSP_request_add0_id().
9047 This doesn't copy the supplied OCSP_CERTID and avoids the
9048 need to free up the newly created id. Change return type
9049 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
9050 This can then be used to add extensions to the request.
9051 Deleted OCSP_request_new(), since most of its functionality
9052 is now in OCSP_REQUEST_new() (and the case insensitive name
9053 clash) apart from the ability to set the request name which
9054 will be added elsewhere.
9057 *) Update OCSP API. Remove obsolete extensions argument from
9058 various functions. Extensions are now handled using the new
9059 OCSP extension code. New simple OCSP HTTP function which
9060 can be used to send requests and parse the response.
9063 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
9064 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
9065 uses the special reorder version of SET OF to sort the attributes
9066 and reorder them to match the encoded order. This resolves a long
9067 standing problem: a verify on a PKCS7 structure just after signing
9068 it used to fail because the attribute order did not match the
9069 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
9070 it uses the received order. This is necessary to tolerate some broken
9071 software that does not order SET OF. This is handled by encoding
9072 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
9073 to produce the required SET OF.
9076 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
9077 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
9078 files to get correct declarations of the ASN.1 item variables.
9081 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
9082 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
9083 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
9084 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
9085 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
9086 ASN1_ITEM and no wrapper functions.
9089 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
9090 replace the old function pointer based I/O routines. Change most of
9091 the *_d2i_bio() and *_d2i_fp() functions to use these.
9094 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
9095 lines, recognize more "algorithms" that can be deselected, and make
9096 it complain about algorithm deselection that isn't recognised.
9099 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
9100 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
9101 to use new functions. Add NO_ASN1_OLD which can be set to remove
9102 some old style ASN1 functions: this can be used to determine if old
9103 code will still work when these eventually go away.
9106 *) New extension functions for OCSP structures, these follow the
9107 same conventions as certificates and CRLs.
9110 *) New function X509V3_add1_i2d(). This automatically encodes and
9111 adds an extension. Its behaviour can be customised with various
9112 flags to append, replace or delete. Various wrappers added for
9113 certificates and CRLs.
9116 *) Fix to avoid calling the underlying ASN1 print routine when
9117 an extension cannot be parsed. Correct a typo in the
9118 OCSP_SERVICELOC extension. Tidy up print OCSP format.
9121 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
9122 entries for variables.
9125 *) Add functionality to apps/openssl.c for detecting locking
9126 problems: As the program is single-threaded, all we have
9127 to do is register a locking callback using an array for
9128 storing which locks are currently held by the program.
9131 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
9132 SSL_get_ex_data_X509_STORE_idx(), which is used in
9133 ssl_verify_cert_chain() and thus can be called at any time
9134 during TLS/SSL handshakes so that thread-safety is essential.
9135 Unfortunately, the ex_data design is not at all suited
9136 for multi-threaded use, so it probably should be abolished.
9139 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
9140 [Broadcom, tweaked and integrated by Geoff Thorpe]
9142 *) Move common extension printing code to new function
9143 X509V3_print_extensions(). Reorganise OCSP print routines and
9144 implement some needed OCSP ASN1 functions. Add OCSP extensions.
9147 *) New function X509_signature_print() to remove duplication in some
9151 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
9152 set (this was treated exactly the same as SET OF previously). This
9153 is used to reorder the STACK representing the structure to match the
9154 encoding. This will be used to get round a problem where a PKCS7
9155 structure which was signed could not be verified because the STACK
9156 order did not reflect the encoded order.
9159 *) Reimplement the OCSP ASN1 module using the new code.
9162 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
9163 for its ASN1 operations. The old style function pointers still exist
9164 for now but they will eventually go away.
9167 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
9168 completely replaces the old ASN1 functionality with a table driven
9169 encoder and decoder which interprets an ASN1_ITEM structure describing
9170 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
9171 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
9172 has also been converted to the new form.
9175 *) Change BN_mod_exp_recp so that negative moduli are tolerated
9176 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
9177 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
9178 for negative moduli.
9181 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
9182 of not touching the result's sign bit.
9185 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
9189 *) Changed the LHASH code to use prototypes for callbacks, and created
9190 macros to declare and implement thin (optionally static) functions
9191 that provide type-safety and avoid function pointer casting for the
9192 type-specific callbacks.
9195 *) Added Kerberos Cipher Suites to be used with TLS, as written in
9197 [Veers Staats <staatsvr@asc.hpc.mil>,
9198 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
9200 *) Reformat the FAQ so the different questions and answers can be divided
9201 in sections depending on the subject.
9204 *) Have the zlib compression code load ZLIB.DLL dynamically under
9208 *) New function BN_mod_sqrt for computing square roots modulo a prime
9209 (using the probabilistic Tonelli-Shanks algorithm unless
9210 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
9211 be handled deterministically).
9212 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
9214 *) Make BN_mod_inverse faster by explicitly handling small quotients
9215 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
9216 512 bits], about 30% for larger ones [1024 or 2048 bits].)
9219 *) New function BN_kronecker.
9222 *) Fix BN_gcd so that it works on negative inputs; the result is
9223 positive unless both parameters are zero.
9224 Previously something reasonably close to an infinite loop was
9225 possible because numbers could be growing instead of shrinking
9226 in the implementation of Euclid's algorithm.
9229 *) Fix BN_is_word() and BN_is_one() macros to take into account the
9230 sign of the number in question.
9232 Fix BN_is_word(a,w) to work correctly for w == 0.
9234 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
9235 because its test if the absolute value of 'a' equals 'w'.
9236 Note that BN_abs_is_word does *not* handle w == 0 reliably;
9237 it exists mostly for use in the implementations of BN_is_zero(),
9238 BN_is_one(), and BN_is_word().
9241 *) New function BN_swap.
9244 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
9245 the exponentiation functions are more likely to produce reasonable
9246 results on negative inputs.
9249 *) Change BN_mod_mul so that the result is always non-negative.
9250 Previously, it could be negative if one of the factors was negative;
9251 I don't think anyone really wanted that behaviour.
9254 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
9255 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
9256 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
9257 and add new functions:
9266 BN_mod_lshift1_quick
9270 These functions always generate non-negative results.
9272 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
9273 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
9275 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
9276 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
9277 be reduced modulo m.
9278 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
9281 The following entry accidentally appeared in the CHANGES file
9282 distributed with OpenSSL 0.9.7. The modifications described in
9283 it do *not* apply to OpenSSL 0.9.7.
9285 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
9286 was actually never needed) and in BN_mul(). The removal in BN_mul()
9287 required a small change in bn_mul_part_recursive() and the addition
9288 of the functions bn_cmp_part_words(), bn_sub_part_words() and
9289 bn_add_part_words(), which do the same thing as bn_cmp_words(),
9290 bn_sub_words() and bn_add_words() except they take arrays with
9295 *) In 'openssl passwd', verify passwords read from the terminal
9296 unless the '-salt' option is used (which usually means that
9297 verification would just waste user's time since the resulting
9298 hash is going to be compared with some given password hash)
9299 or the new '-noverify' option is used.
9301 This is an incompatible change, but it does not affect
9302 non-interactive use of 'openssl passwd' (passwords on the command
9303 line, '-stdin' option, '-in ...' option) and thus should not
9307 *) Remove all references to RSAref, since there's no more need for it.
9310 *) Make DSO load along a path given through an environment variable
9311 (SHLIB_PATH) with shl_load().
9314 *) Constify the ENGINE code as a result of BIGNUM constification.
9315 Also constify the RSA code and most things related to it. In a
9316 few places, most notable in the depth of the ASN.1 code, ugly
9317 casts back to non-const were required (to be solved at a later
9321 *) Make it so the openssl application has all engines loaded by default.
9324 *) Constify the BIGNUM routines a little more.
9327 *) Add the following functions:
9329 ENGINE_load_cswift()
9331 ENGINE_load_atalla()
9333 ENGINE_load_builtin_engines()
9335 That way, an application can itself choose if external engines that
9336 are built-in in OpenSSL shall ever be used or not. The benefit is
9337 that applications won't have to be linked with libdl or other dso
9338 libraries unless it's really needed.
9340 Changed 'openssl engine' to load all engines on demand.
9341 Changed the engine header files to avoid the duplication of some
9342 declarations (they differed!).
9345 *) 'openssl engine' can now list capabilities.
9348 *) Better error reporting in 'openssl engine'.
9351 *) Never call load_dh_param(NULL) in s_server.
9354 *) Add engine application. It can currently list engines by name and
9355 identity, and test if they are actually available.
9358 *) Improve RPM specification file by forcing symbolic linking and making
9359 sure the installed documentation is also owned by root.root.
9360 [Damien Miller <djm@mindrot.org>]
9362 *) Give the OpenSSL applications more possibilities to make use of
9363 keys (public as well as private) handled by engines.
9366 *) Add OCSP code that comes from CertCo.
9369 *) Add VMS support for the Rijndael code.
9372 *) Added untested support for Nuron crypto accelerator.
9375 *) Add support for external cryptographic devices. This code was
9376 previously distributed separately as the "engine" branch.
9377 [Geoff Thorpe, Richard Levitte]
9379 *) Rework the filename-translation in the DSO code. It is now possible to
9380 have far greater control over how a "name" is turned into a filename
9381 depending on the operating environment and any oddities about the
9382 different shared library filenames on each system.
9385 *) Support threads on FreeBSD-elf in Configure.
9388 *) Fix for SHA1 assembly problem with MASM: it produces
9389 warnings about corrupt line number information when assembling
9390 with debugging information. This is caused by the overlapping
9392 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
9395 NCONF_get_number() has no error checking at all. As a replacement,
9396 NCONF_get_number_e() is defined (_e for "error checking") and is
9397 promoted strongly. The old NCONF_get_number is kept around for
9398 binary backward compatibility.
9399 Make it possible for methods to load from something other than a BIO,
9400 by providing a function pointer that is given a name instead of a BIO.
9401 For example, this could be used to load configuration data from an
9405 *) Fix for non blocking accept BIOs. Added new I/O special reason
9406 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
9407 with non blocking I/O was not possible because no retry code was
9408 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
9412 *) Added the beginnings of Rijndael support.
9415 *) Fix for bug in DirectoryString mask setting. Add support for
9416 X509_NAME_print_ex() in 'req' and X509_print_ex() function
9417 to allow certificate printing to more controllable, additional
9418 'certopt' option to 'x509' to allow new printing options to be
9422 *) Clean old EAY MD5 hack from e_os.h.
9425 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
9427 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
9428 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
9429 [Joe Orton, Steve Henson]
9431 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
9433 *) Fix additional bug revealed by the NISCC test suite:
9435 Stop bug triggering large recursion when presented with
9436 certain ASN.1 tags (CVE-2003-0851)
9439 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
9441 *) Fix various bugs revealed by running the NISCC test suite:
9443 Stop out of bounds reads in the ASN1 code when presented with
9444 invalid tags (CVE-2003-0543 and CVE-2003-0544).
9446 If verify callback ignores invalid public key errors don't try to check
9447 certificate signature with the NULL public key.
9451 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
9452 if the server requested one: as stated in TLS 1.0 and SSL 3.0
9456 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
9457 extra data after the compression methods not only for TLS 1.0
9458 but also for SSL 3.0 (as required by the specification).
9459 [Bodo Moeller; problem pointed out by Matthias Loepfe]
9461 *) Change X509_certificate_type() to mark the key as exported/exportable
9462 when it's 512 *bits* long, not 512 bytes.
9465 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
9467 *) Countermeasure against the Klima-Pokorny-Rosa extension of
9468 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
9469 a protocol version number mismatch like a decryption error
9470 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
9473 *) Turn on RSA blinding by default in the default implementation
9474 to avoid a timing attack. Applications that don't want it can call
9475 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
9476 They would be ill-advised to do so in most cases.
9477 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
9479 *) Change RSA blinding code so that it works when the PRNG is not
9480 seeded (in this case, the secret RSA exponent is abused as
9481 an unpredictable seed -- if it is not unpredictable, there
9482 is no point in blinding anyway). Make RSA blinding thread-safe
9483 by remembering the creator's thread ID in rsa->blinding and
9484 having all other threads use local one-time blinding factors
9485 (this requires more computation than sharing rsa->blinding, but
9486 avoids excessive locking; and if an RSA object is not shared
9487 between threads, blinding will still be very fast).
9490 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
9492 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
9493 via timing by performing a MAC computation even if incorrect
9494 block cipher padding has been found. This is a countermeasure
9495 against active attacks where the attacker has to distinguish
9496 between bad padding and a MAC verification error. (CVE-2003-0078)
9498 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
9499 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
9500 Martin Vuagnoux (EPFL, Ilion)]
9502 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
9504 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
9505 memory from its contents. This is done with a counter that will
9506 place alternating values in each byte. This can be used to solve
9507 two issues: 1) the removal of calls to memset() by highly optimizing
9508 compilers, and 2) cleansing with other values than 0, since those can
9509 be read through on certain media, for example a swap space on disk.
9512 *) Bugfix: client side session caching did not work with external caching,
9513 because the session->cipher setting was not restored when reloading
9514 from the external cache. This problem was masked, when
9515 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
9516 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
9519 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
9520 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
9521 [Zeev Lieber <zeev-l@yahoo.com>]
9523 *) Undo an undocumented change introduced in 0.9.6e which caused
9524 repeated calls to OpenSSL_add_all_ciphers() and
9525 OpenSSL_add_all_digests() to be ignored, even after calling
9529 *) Change the default configuration reader to deal with last line not
9530 being properly terminated.
9533 *) Change X509_NAME_cmp() so it applies the special rules on handling
9534 DN values that are of type PrintableString, as well as RDNs of type
9535 emailAddress where the value has the type ia5String.
9536 [stefank@valicert.com via Richard Levitte]
9538 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
9539 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
9540 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
9541 the bitwise-OR of the two for use by the majority of applications
9542 wanting this behaviour, and update the docs. The documented
9543 behaviour and actual behaviour were inconsistent and had been
9544 changing anyway, so this is more a bug-fix than a behavioural
9546 [Geoff Thorpe, diagnosed by Nadav Har'El]
9548 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
9549 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
9552 *) Fix initialization code race conditions in
9553 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
9554 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
9555 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
9556 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
9557 ssl2_get_cipher_by_char(),
9558 ssl3_get_cipher_by_char().
9559 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
9561 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
9562 the cached sessions are flushed, as the remove_cb() might use ex_data
9563 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
9564 (see [openssl.org #212]).
9565 [Geoff Thorpe, Lutz Jaenicke]
9567 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
9568 length, instead of the encoding length to d2i_ASN1_OBJECT.
9571 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
9573 *) [In 0.9.6g-engine release:]
9574 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
9575 [Lynn Gazis <lgazis@rainbow.com>]
9577 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
9579 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
9580 and get fix the header length calculation.
9581 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
9582 Alon Kantor <alonk@checkpoint.com> (and others),
9585 *) Use proper error handling instead of 'assertions' in buffer
9586 overflow checks added in 0.9.6e. This prevents DoS (the
9587 assertions could call abort()).
9588 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
9590 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
9592 *) Add various sanity checks to asn1_get_length() to reject
9593 the ASN1 length bytes if they exceed sizeof(long), will appear
9594 negative or the content length exceeds the length of the
9596 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9598 *) Fix cipher selection routines: ciphers without encryption had no flags
9599 for the cipher strength set and where therefore not handled correctly
9600 by the selection routines (PR #130).
9603 *) Fix EVP_dsa_sha macro.
9607 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
9608 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
9609 that was added in OpenSSL 0.9.6d.
9611 As the countermeasure turned out to be incompatible with some
9612 broken SSL implementations, the new option is part of SSL_OP_ALL.
9613 SSL_OP_ALL is usually employed when compatibility with weird SSL
9614 implementations is desired (e.g. '-bugs' option to 's_client' and
9615 's_server'), so the new option is automatically set in many
9619 *) Changes in security patch:
9621 Changes marked "(CHATS)" were sponsored by the Defense Advanced
9622 Research Projects Agency (DARPA) and Air Force Research Laboratory,
9623 Air Force Materiel Command, USAF, under agreement number
9626 *) Add various sanity checks to asn1_get_length() to reject
9627 the ASN1 length bytes if they exceed sizeof(long), will appear
9628 negative or the content length exceeds the length of the
9629 supplied buffer. (CVE-2002-0659)
9630 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9632 *) Assertions for various potential buffer overflows, not known to
9634 [Ben Laurie (CHATS)]
9636 *) Various temporary buffers to hold ASCII versions of integers were
9637 too small for 64 bit platforms. (CVE-2002-0655)
9638 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
9640 *) Remote buffer overflow in SSL3 protocol - an attacker could
9641 supply an oversized session ID to a client. (CVE-2002-0656)
9642 [Ben Laurie (CHATS)]
9644 *) Remote buffer overflow in SSL2 protocol - an attacker could
9645 supply an oversized client master key. (CVE-2002-0656)
9646 [Ben Laurie (CHATS)]
9648 Changes between 0.9.6c and 0.9.6d [9 May 2002]
9650 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
9651 encoded as NULL) with id-dsa-with-sha1.
9652 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
9654 *) Check various X509_...() return values in apps/req.c.
9655 [Nils Larsch <nla@trustcenter.de>]
9657 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
9658 an end-of-file condition would erroneously be flagged, when the CRLF
9659 was just at the end of a processed block. The bug was discovered when
9660 processing data through a buffering memory BIO handing the data to a
9661 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
9662 <ptsekov@syntrex.com> and Nedelcho Stanev.
9665 *) Implement a countermeasure against a vulnerability recently found
9666 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
9667 before application data chunks to avoid the use of known IVs
9668 with data potentially chosen by the attacker.
9671 *) Fix length checks in ssl3_get_client_hello().
9674 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
9675 to prevent ssl3_read_internal() from incorrectly assuming that
9676 ssl3_read_bytes() found application data while handshake
9677 processing was enabled when in fact s->s3->in_read_app_data was
9678 merely automatically cleared during the initial handshake.
9679 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
9681 *) Fix object definitions for Private and Enterprise: they were not
9682 recognized in their shortname (=lowercase) representation. Extend
9683 obj_dat.pl to issue an error when using undefined keywords instead
9684 of silently ignoring the problem (Svenning Sorensen
9685 <sss@sss.dnsalias.net>).
9688 *) Fix DH_generate_parameters() so that it works for 'non-standard'
9689 generators, i.e. generators other than 2 and 5. (Previously, the
9690 code did not properly initialise the 'add' and 'rem' values to
9691 BN_generate_prime().)
9693 In the new general case, we do not insist that 'generator' is
9694 actually a primitive root: This requirement is rather pointless;
9695 a generator of the order-q subgroup is just as good, if not
9699 *) Map new X509 verification errors to alerts. Discovered and submitted by
9700 Tom Wu <tom@arcot.com>.
9703 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
9704 returning non-zero before the data has been completely received
9705 when using non-blocking I/O.
9706 [Bodo Moeller; problem pointed out by John Hughes]
9708 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
9709 [Ben Laurie, Lutz Jaenicke]
9711 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
9712 Yoram Zahavi <YoramZ@gilian.com>).
9715 *) Add information about CygWin 1.3 and on, and preserve proper
9716 configuration for the versions before that.
9717 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
9719 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
9720 check whether we deal with a copy of a session and do not delete from
9721 the cache in this case. Problem reported by "Izhar Shoshani Levi"
9722 <izhar@checkpoint.com>.
9725 *) Do not store session data into the internal session cache, if it
9726 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
9727 flag is set). Proposed by Aslam <aslam@funk.com>.
9730 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
9734 *) [In 0.9.6d-engine release:]
9735 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
9736 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
9738 *) Add the configuration target linux-s390x.
9739 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
9741 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
9742 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
9743 variable as an indication that a ClientHello message has been
9744 received. As the flag value will be lost between multiple
9745 invocations of ssl3_accept when using non-blocking I/O, the
9746 function may not be aware that a handshake has actually taken
9747 place, thus preventing a new session from being added to the
9750 To avoid this problem, we now set s->new_session to 2 instead of
9751 using a local variable.
9752 [Lutz Jaenicke, Bodo Moeller]
9754 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
9755 if the SSL_R_LENGTH_MISMATCH error is detected.
9756 [Geoff Thorpe, Bodo Moeller]
9758 *) New 'shared_ldflag' column in Configure platform table.
9761 *) Fix EVP_CIPHER_mode macro.
9762 ["Dan S. Camper" <dan@bti.net>]
9764 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
9765 type, we must throw them away by setting rr->length to 0.
9766 [D P Chang <dpc@qualys.com>]
9768 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
9770 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
9771 <Dominikus.Scherkl@biodata.com>. (The previous implementation
9772 worked incorrectly for those cases where range = 10..._2 and
9773 3*range is two bits longer than range.)
9776 *) Only add signing time to PKCS7 structures if it is not already
9780 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
9781 OBJ_ld_ce should be OBJ_id_ce.
9782 Also some ip-pda OIDs in crypto/objects/objects.txt were
9783 incorrect (cf. RFC 3039).
9784 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
9786 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
9787 returns early because it has nothing to do.
9788 [Andy Schneider <andy.schneider@bjss.co.uk>]
9790 *) [In 0.9.6c-engine release:]
9791 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
9792 [Andy Schneider <andy.schneider@bjss.co.uk>]
9794 *) [In 0.9.6c-engine release:]
9795 Add support for Cryptographic Appliance's keyserver technology.
9796 (Use engine 'keyclient')
9797 [Cryptographic Appliances and Geoff Thorpe]
9799 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
9800 is called via tools/c89.sh because arguments have to be
9801 rearranged (all '-L' options must appear before the first object
9803 [Richard Shapiro <rshapiro@abinitio.com>]
9805 *) [In 0.9.6c-engine release:]
9806 Add support for Broadcom crypto accelerator cards, backported
9808 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
9810 *) [In 0.9.6c-engine release:]
9811 Add support for SureWare crypto accelerator cards from
9812 Baltimore Technologies. (Use engine 'sureware')
9813 [Baltimore Technologies and Mark Cox]
9815 *) [In 0.9.6c-engine release:]
9816 Add support for crypto accelerator cards from Accelerated
9817 Encryption Processing, www.aep.ie. (Use engine 'aep')
9818 [AEP Inc. and Mark Cox]
9820 *) Add a configuration entry for gcc on UnixWare.
9821 [Gary Benson <gbenson@redhat.com>]
9823 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
9824 messages are stored in a single piece (fixed-length part and
9825 variable-length part combined) and fix various bugs found on the way.
9828 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
9829 instead. BIO_gethostbyname() does not know what timeouts are
9830 appropriate, so entries would stay in cache even when they have
9832 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
9834 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
9835 faced with a pathologically small ClientHello fragment that does
9836 not contain client_version: Instead of aborting with an error,
9837 simply choose the highest available protocol version (i.e.,
9838 TLS 1.0 unless it is disabled). In practice, ClientHello
9839 messages are never sent like this, but this change gives us
9840 strictly correct behaviour at least for TLS.
9843 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
9844 never resets s->method to s->ctx->method when called from within
9845 one of the SSL handshake functions.
9846 [Bodo Moeller; problem pointed out by Niko Baric]
9848 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
9849 (sent using the client's version number) if client_version is
9850 smaller than the protocol version in use. Also change
9851 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
9852 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
9853 the client will at least see that alert.
9856 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
9860 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
9861 client receives HelloRequest while in a handshake.
9862 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
9864 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
9865 should end in 'break', not 'goto end' which circumvents various
9866 cleanups done in state SSL_ST_OK. But session related stuff
9867 must be disabled for SSL_ST_OK in the case that we just sent a
9870 Also avoid some overhead by not calling ssl_init_wbio_buffer()
9871 before just sending a HelloRequest.
9872 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
9874 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
9875 reveal whether illegal block cipher padding was found or a MAC
9876 verification error occurred. (Neither SSLerr() codes nor alerts
9877 are directly visible to potential attackers, but the information
9878 may leak via logfiles.)
9880 Similar changes are not required for the SSL 2.0 implementation
9881 because the number of padding bytes is sent in clear for SSL 2.0,
9882 and the extra bytes are just ignored. However ssl/s2_pkt.c
9883 failed to verify that the purported number of padding bytes is in
9887 *) Add OpenUNIX-8 support including shared libraries
9888 (Boyd Lynn Gerber <gerberb@zenez.com>).
9891 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
9892 'wristwatch attack' using huge encoding parameters (cf.
9893 James H. Manger's CRYPTO 2001 paper). Note that the
9894 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
9895 encoding parameters and hence was not vulnerable.
9898 *) BN_sqr() bug fix.
9899 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
9901 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
9902 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
9903 followed by modular reduction.
9904 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
9906 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
9907 equivalent based on BN_pseudo_rand() instead of BN_rand().
9910 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
9911 This function was broken, as the check for a new client hello message
9912 to handle SGC did not allow these large messages.
9913 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
9916 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
9919 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
9920 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
9923 *) Rework the configuration and shared library support for Tru64 Unix.
9924 The configuration part makes use of modern compiler features and
9925 still retains old compiler behavior for those that run older versions
9926 of the OS. The shared library support part includes a variant that
9927 uses the RPATH feature, and is available through the special
9928 configuration target "alpha-cc-rpath", which will never be selected
9930 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
9932 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
9933 with the same message size as in ssl3_get_certificate_request().
9934 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
9935 messages might inadvertently be reject as too long.
9936 [Petr Lampa <lampa@fee.vutbr.cz>]
9938 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
9941 *) Modified SSL library such that the verify_callback that has been set
9942 specifically for an SSL object with SSL_set_verify() is actually being
9943 used. Before the change, a verify_callback set with this function was
9944 ignored and the verify_callback() set in the SSL_CTX at the time of
9945 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
9946 to allow the necessary settings.
9949 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
9950 explicitly to NULL, as at least on Solaris 8 this seems not always to be
9951 done automatically (in contradiction to the requirements of the C
9952 standard). This made problems when used from OpenSSH.
9955 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
9956 dh->length and always used
9958 BN_rand_range(priv_key, dh->p).
9960 BN_rand_range() is not necessary for Diffie-Hellman, and this
9961 specific range makes Diffie-Hellman unnecessarily inefficient if
9962 dh->length (recommended exponent length) is much smaller than the
9963 length of dh->p. We could use BN_rand_range() if the order of
9964 the subgroup was stored in the DH structure, but we only have
9969 BN_rand(priv_key, l, ...)
9971 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
9977 RSA_eay_public_encrypt
9978 RSA_eay_private_decrypt
9979 RSA_eay_private_encrypt (signing)
9980 RSA_eay_public_decrypt (signature verification)
9982 (default implementations for RSA_public_encrypt,
9983 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
9984 always reject numbers >= n.
9987 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
9988 to synchronize access to 'locking_thread'. This is necessary on
9989 systems where access to 'locking_thread' (an 'unsigned long'
9990 variable) is not atomic.
9993 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
9994 *before* setting the 'crypto_lock_rand' flag. The previous code had
9995 a race condition if 0 is a valid thread ID.
9996 [Travis Vitek <vitek@roguewave.com>]
9998 *) Add support for shared libraries under Irix.
9999 [Albert Chin-A-Young <china@thewrittenword.com>]
10001 *) Add configuration option to build on Linux on both big-endian and
10002 little-endian MIPS.
10003 [Ralf Baechle <ralf@uni-koblenz.de>]
10005 *) Add the possibility to create shared libraries on HP-UX.
10008 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
10010 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
10011 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
10012 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
10013 PRNG state recovery was possible based on the output of
10014 one PRNG request appropriately sized to gain knowledge on
10015 'md' followed by enough consecutive 1-byte PRNG requests
10016 to traverse all of 'state'.
10018 1. When updating 'md_local' (the current thread's copy of 'md')
10019 during PRNG output generation, hash all of the previous
10020 'md_local' value, not just the half used for PRNG output.
10022 2. Make the number of bytes from 'state' included into the hash
10023 independent from the number of PRNG bytes requested.
10025 The first measure alone would be sufficient to avoid
10026 Markku-Juhani's attack. (Actually it had never occurred
10027 to me that the half of 'md_local' used for chaining was the
10028 half from which PRNG output bytes were taken -- I had always
10029 assumed that the secret half would be used.) The second
10030 measure makes sure that additional data from 'state' is never
10031 mixed into 'md_local' in small portions; this heuristically
10032 further strengthens the PRNG.
10035 *) Fix crypto/bn/asm/mips3.s.
10038 *) When only the key is given to "enc", the IV is undefined. Print out
10039 an error message in this case.
10042 *) Handle special case when X509_NAME is empty in X509 printing routines.
10045 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
10046 positive and less than q.
10049 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
10050 used: it isn't thread safe and the add_lock_callback should handle
10052 [Paul Rose <Paul.Rose@bridge.com>]
10054 *) Verify that incoming data obeys the block size in
10055 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
10059 [Ulf Möller, Bodo Möller]
10061 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
10062 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
10063 when fixing the server behaviour for backwards-compatible 'client
10064 hello' messages. (Note that the attack is impractical against
10065 SSL 3.0 and TLS 1.0 anyway because length and version checking
10066 means that the probability of guessing a valid ciphertext is
10067 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
10070 Before 0.9.5, the countermeasure (hide the error by generating a
10071 random 'decryption result') did not work properly because
10072 ERR_clear_error() was missing, meaning that SSL_get_error() would
10073 detect the supposedly ignored error.
10075 Both problems are now fixed.
10078 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
10079 (previously it was 1024).
10082 *) Fix for compatibility mode trust settings: ignore trust settings
10083 unless some valid trust or reject settings are present.
10086 *) Fix for blowfish EVP: its a variable length cipher.
10089 *) Fix various bugs related to DSA S/MIME verification. Handle missing
10090 parameters in DSA public key structures and return an error in the
10091 DSA routines if parameters are absent.
10094 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
10095 in the current directory if neither $RANDFILE nor $HOME was set.
10096 RAND_file_name() in 0.9.6a returned NULL in this case. This has
10097 caused some confusion to Windows users who haven't defined $HOME.
10098 Thus RAND_file_name() is changed again: e_os.h can define a
10099 DEFAULT_HOME, which will be used if $HOME is not set.
10100 For Windows, we use "C:"; on other platforms, we still require
10101 environment variables.
10103 *) Move 'if (!initialized) RAND_poll()' into regions protected by
10104 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
10105 having multiple threads call RAND_poll() concurrently.
10108 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
10109 combination of a flag and a thread ID variable.
10110 Otherwise while one thread is in ssleay_rand_bytes (which sets the
10111 flag), *other* threads can enter ssleay_add_bytes without obeying
10112 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
10113 that they do not hold after the first thread unsets add_do_not_lock).
10116 *) Change bctest again: '-x' expressions are not available in all
10117 versions of 'test'.
10120 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
10122 *) Fix a couple of memory leaks in PKCS7_dataDecode()
10123 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
10125 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
10126 the default extension for executables, if any. Also, make the perl
10127 scripts that use symlink() to test if it really exists and use "cp"
10128 if it doesn't. All this made OpenSSL compilable and installable in
10132 *) Fix for asn1_GetSequence() for indefinite length constructed data.
10133 If SEQUENCE is length is indefinite just set c->slen to the total
10134 amount of data available.
10135 [Steve Henson, reported by shige@FreeBSD.org]
10136 [This change does not apply to 0.9.7.]
10138 *) Change bctest to avoid here-documents inside command substitution
10139 (workaround for FreeBSD /bin/sh bug).
10140 For compatibility with Ultrix, avoid shell functions (introduced
10141 in the bctest version that searches along $PATH).
10144 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
10145 with des_encrypt() defined on some operating systems, like Solaris
10149 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
10150 On the Importance of Eliminating Errors in Cryptographic
10151 Computations, J. Cryptology 14 (2001) 2, 101-119,
10152 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
10155 *) MIPS assembler BIGNUM division bug fix.
10158 *) Disabled incorrect Alpha assembler code.
10161 *) Fix PKCS#7 decode routines so they correctly update the length
10162 after reading an EOC for the EXPLICIT tag.
10164 [This change does not apply to 0.9.7.]
10166 *) Fix bug in PKCS#12 key generation routines. This was triggered
10167 if a 3DES key was generated with a 0 initial byte. Include
10168 PKCS12_BROKEN_KEYGEN compilation option to retain the old
10169 (but broken) behaviour.
10172 *) Enhance bctest to search for a working bc along $PATH and print
10174 [Tim Rice <tim@multitalents.net> via Richard Levitte]
10176 *) Fix memory leaks in err.c: free err_data string if necessary;
10177 don't write to the wrong index in ERR_set_error_data.
10180 *) Implement ssl23_peek (analogous to ssl23_read), which previously
10184 *) Replace rdtsc with _emit statements for VC++ version 5.
10185 [Jeremy Cooper <jeremy@baymoo.org>]
10187 *) Make it possible to reuse SSLv2 sessions.
10190 *) In copy_email() check for >= 0 as a return value for
10191 X509_NAME_get_index_by_NID() since 0 is a valid index.
10192 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
10194 *) Avoid coredump with unsupported or invalid public keys by checking if
10195 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
10196 PKCS7_verify() fails with non detached data.
10199 *) Don't use getenv in library functions when run as setuid/setgid.
10200 New function OPENSSL_issetugid().
10203 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
10204 due to incorrect handling of multi-threading:
10206 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
10208 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
10210 3. Count how many times MemCheck_off() has been called so that
10211 nested use can be treated correctly. This also avoids
10212 inband-signalling in the previous code (which relied on the
10213 assumption that thread ID 0 is impossible).
10216 *) Add "-rand" option also to s_client and s_server.
10219 *) Fix CPU detection on Irix 6.x.
10220 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
10221 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
10223 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
10226 [This change does not apply to 0.9.7.]
10228 *) Use the cached encoding of an X509_NAME structure rather than
10229 copying it. This is apparently the reason for the libsafe "errors"
10230 but the code is actually correct.
10233 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
10234 Bleichenbacher's DSA attack.
10235 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
10236 to be set and top=0 forces the highest bit to be set; top=-1 is new
10237 and leaves the highest bit random.
10238 [Ulf Moeller, Bodo Moeller]
10240 *) In the NCONF_...-based implementations for CONF_... queries
10241 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
10242 a temporary CONF structure with the data component set to NULL
10243 (which gives segmentation faults in lh_retrieve).
10244 Instead, use NULL for the CONF pointer in CONF_get_string and
10245 CONF_get_number (which may use environment variables) and directly
10246 return NULL from CONF_get_section.
10249 *) Fix potential buffer overrun for EBCDIC.
10252 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
10253 keyUsage if basicConstraints absent for a CA.
10256 *) Make SMIME_write_PKCS7() write mail header values with a format that
10257 is more generally accepted (no spaces before the semicolon), since
10258 some programs can't parse those values properly otherwise. Also make
10259 sure BIO's that break lines after each write do not create invalid
10263 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
10264 macros previously used would not encode an empty SEQUENCE OF
10265 and break the signature.
10267 [This change does not apply to 0.9.7.]
10269 *) Zero the premaster secret after deriving the master secret in
10273 *) Add some EVP_add_digest_alias registrations (as found in
10274 OpenSSL_add_all_digests()) to SSL_library_init()
10275 aka OpenSSL_add_ssl_algorithms(). This provides improved
10276 compatibility with peers using X.509 certificates
10277 with unconventional AlgorithmIdentifier OIDs.
10280 *) Fix for Irix with NO_ASM.
10281 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
10283 *) ./config script fixes.
10284 [Ulf Moeller, Richard Levitte]
10286 *) Fix 'openssl passwd -1'.
10289 *) Change PKCS12_key_gen_asc() so it can cope with non null
10290 terminated strings whose length is passed in the passlen
10291 parameter, for example from PEM callbacks. This was done
10292 by adding an extra length parameter to asc2uni().
10293 [Steve Henson, reported by <oddissey@samsung.co.kr>]
10295 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
10296 call failed, free the DSA structure.
10299 *) Fix to uni2asc() to cope with zero length Unicode strings.
10300 These are present in some PKCS#12 files.
10303 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
10304 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
10305 when writing a 32767 byte record.
10306 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
10308 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
10309 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
10311 (RSA objects have a reference count access to which is protected
10312 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
10313 so they are meant to be shared between threads.)
10314 [Bodo Moeller, Geoff Thorpe; original patch submitted by
10315 "Reddie, Steven" <Steven.Reddie@ca.com>]
10317 *) Fix a deadlock in CRYPTO_mem_leaks().
10320 *) Use better test patterns in bntest.
10323 *) rand_win.c fix for Borland C.
10326 *) BN_rshift bugfix for n == 0.
10329 *) Add a 'bctest' script that checks for some known 'bc' bugs
10330 so that 'make test' does not abort just because 'bc' is broken.
10333 *) Store verify_result within SSL_SESSION also for client side to
10334 avoid potential security hole. (Re-used sessions on the client side
10335 always resulted in verify_result==X509_V_OK, not using the original
10336 result of the server certificate verification.)
10339 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
10340 SSL3_RT_APPLICATION_DATA, return 0.
10341 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
10345 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
10346 releases, have been re-implemented by renaming the previous
10347 implementations of ssl2_read and ssl3_read to ssl2_read_internal
10348 and ssl3_read_internal, respectively, and adding 'peek' parameters
10349 to them. The new ssl[23]_{read,peek} functions are calls to
10350 ssl[23]_read_internal with the 'peek' flag set appropriately.
10351 A 'peek' parameter has also been added to ssl3_read_bytes, which
10352 does the actual work for ssl3_read_internal.
10355 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
10356 the method-specific "init()" handler. Also clean up ex_data after
10357 calling the method-specific "finish()" handler. Previously, this was
10358 happening the other way round.
10361 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
10362 The previous value, 12, was not always sufficient for BN_mod_exp().
10365 *) Make sure that shared libraries get the internal name engine with
10366 the full version number and not just 0. This should mark the
10367 shared libraries as not backward compatible. Of course, this should
10368 be changed again when we can guarantee backward binary compatibility.
10371 *) Fix typo in get_cert_by_subject() in by_dir.c
10372 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
10374 *) Rework the system to generate shared libraries:
10376 - Make note of the expected extension for the shared libraries and
10377 if there is a need for symbolic links from for example libcrypto.so.0
10378 to libcrypto.so.0.9.7. There is extended info in Configure for
10381 - Make as few rebuilds of the shared libraries as possible.
10383 - Still avoid linking the OpenSSL programs with the shared libraries.
10385 - When installing, install the shared libraries separately from the
10389 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
10391 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
10392 and not in SSL_clear because the latter is also used by the
10393 accept/connect functions; previously, the settings made by
10394 SSL_set_read_ahead would be lost during the handshake.
10395 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
10397 *) Correct util/mkdef.pl to be selective about disabled algorithms.
10398 Previously, it would create entries for disabled algorithms no
10402 *) Added several new manual pages for SSL_* function.
10405 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
10407 *) In ssl23_get_client_hello, generate an error message when faced
10408 with an initial SSL 3.0/TLS record that is too small to contain the
10409 first two bytes of the ClientHello message, i.e. client_version.
10410 (Note that this is a pathologic case that probably has never happened
10411 in real life.) The previous approach was to use the version number
10412 from the record header as a substitute; but our protocol choice
10413 should not depend on that one because it is not authenticated
10414 by the Finished messages.
10417 *) More robust randomness gathering functions for Windows.
10418 [Jeffrey Altman <jaltman@columbia.edu>]
10420 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
10421 not set then we don't setup the error code for issuer check errors
10422 to avoid possibly overwriting other errors which the callback does
10423 handle. If an application does set the flag then we assume it knows
10424 what it is doing and can handle the new informational codes
10428 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
10429 a general "ANY" type, as such it should be able to decode anything
10430 including tagged types. However it didn't check the class so it would
10431 wrongly interpret tagged types in the same way as their universal
10432 counterpart and unknown types were just rejected. Changed so that the
10433 tagged and unknown types are handled in the same way as a SEQUENCE:
10434 that is the encoding is stored intact. There is also a new type
10435 "V_ASN1_OTHER" which is used when the class is not universal, in this
10436 case we have no idea what the actual type is so we just lump them all
10440 *) On VMS, stdout may very well lead to a file that is written to
10441 in a record-oriented fashion. That means that every write() will
10442 write a separate record, which will be read separately by the
10443 programs trying to read from it. This can be very confusing.
10445 The solution is to put a BIO filter in the way that will buffer
10446 text until a linefeed is reached, and then write everything a
10447 line at a time, so every record written will be an actual line,
10448 not chunks of lines and not (usually doesn't happen, but I've
10449 seen it once) several lines in one record. BIO_f_linebuffer() is
10452 Currently, it's a VMS-only method, because that's where it has
10453 been tested well enough.
10456 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
10457 it can return incorrect results.
10458 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
10459 but it was in 0.9.6-beta[12].)
10462 *) Disable the check for content being present when verifying detached
10463 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
10464 include zero length content when signing messages.
10467 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
10468 BIO_ctrl (for BIO pairs).
10471 *) Add DSO method for VMS.
10474 *) Bug fix: Montgomery multiplication could produce results with the
10478 *) Add RPM specification openssl.spec and modify it to build three
10479 packages. The default package contains applications, application
10480 documentation and run-time libraries. The devel package contains
10481 include files, static libraries and function documentation. The
10482 doc package contains the contents of the doc directory. The original
10483 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
10486 *) Add a large number of documentation files for many SSL routines.
10487 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10489 *) Add a configuration entry for Sony News 4.
10490 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
10492 *) Don't set the two most significant bits to one when generating a
10493 random number < q in the DSA library.
10496 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
10497 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
10498 the underlying transport is blocking) if a handshake took place.
10499 (The default behaviour is needed by applications such as s_client
10500 and s_server that use select() to determine when to use SSL_read;
10501 but for applications that know in advance when to expect data, it
10502 just makes things more complicated.)
10505 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
10509 *) Add a few more EBCDIC conditionals that make `req' and `x509'
10510 work better on such systems.
10511 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10513 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
10514 Update PKCS12_parse() so it copies the friendlyName and the
10515 keyid to the certificates aux info.
10518 *) Fix bug in PKCS7_verify() which caused an infinite loop
10519 if there was more than one signature.
10520 [Sven Uszpelkat <su@celocom.de>]
10522 *) Major change in util/mkdef.pl to include extra information
10523 about each symbol, as well as presenting variables as well
10524 as functions. This change means that there's n more need
10525 to rebuild the .num files when some algorithms are excluded.
10528 *) Allow the verify time to be set by an application,
10529 rather than always using the current time.
10532 *) Phase 2 verify code reorganisation. The certificate
10533 verify code now looks up an issuer certificate by a
10534 number of criteria: subject name, authority key id
10535 and key usage. It also verifies self signed certificates
10536 by the same criteria. The main comparison function is
10537 X509_check_issued() which performs these checks.
10539 Lot of changes were necessary in order to support this
10540 without completely rewriting the lookup code.
10542 Authority and subject key identifier are now cached.
10544 The LHASH 'certs' is X509_STORE has now been replaced
10545 by a STACK_OF(X509_OBJECT). This is mainly because an
10546 LHASH can't store or retrieve multiple objects with
10547 the same hash value.
10549 As a result various functions (which were all internal
10550 use only) have changed to handle the new X509_STORE
10551 structure. This will break anything that messed round
10552 with X509_STORE internally.
10554 The functions X509_STORE_add_cert() now checks for an
10555 exact match, rather than just subject name.
10557 The X509_STORE API doesn't directly support the retrieval
10558 of multiple certificates matching a given criteria, however
10559 this can be worked round by performing a lookup first
10560 (which will fill the cache with candidate certificates)
10561 and then examining the cache for matches. This is probably
10562 the best we can do without throwing out X509_LOOKUP
10563 entirely (maybe later...).
10565 The X509_VERIFY_CTX structure has been enhanced considerably.
10567 All certificate lookup operations now go via a get_issuer()
10568 callback. Although this currently uses an X509_STORE it
10569 can be replaced by custom lookups. This is a simple way
10570 to bypass the X509_STORE hackery necessary to make this
10571 work and makes it possible to use more efficient techniques
10572 in future. A very simple version which uses a simple
10573 STACK for its trusted certificate store is also provided
10574 using X509_STORE_CTX_trusted_stack().
10576 The verify_cb() and verify() callbacks now have equivalents
10577 in the X509_STORE_CTX structure.
10579 X509_STORE_CTX also has a 'flags' field which can be used
10580 to customise the verify behaviour.
10583 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
10584 excludes S/MIME capabilities.
10587 *) When a certificate request is read in keep a copy of the
10588 original encoding of the signed data and use it when outputting
10589 again. Signatures then use the original encoding rather than
10590 a decoded, encoded version which may cause problems if the
10591 request is improperly encoded.
10594 *) For consistency with other BIO_puts implementations, call
10595 buffer_write(b, ...) directly in buffer_puts instead of calling
10598 In BIO_puts, increment b->num_write as in BIO_write.
10599 [Peter.Sylvester@EdelWeb.fr]
10601 *) Fix BN_mul_word for the case where the word is 0. (We have to use
10602 BN_zero, we may not return a BIGNUM with an array consisting of
10603 words set to zero.)
10606 *) Avoid calling abort() from within the library when problems are
10607 detected, except if preprocessor symbols have been defined
10608 (such as REF_CHECK, BN_DEBUG etc.).
10611 *) New openssl application 'rsautl'. This utility can be
10612 used for low level RSA operations. DER public key
10613 BIO/fp routines also added.
10616 *) New Configure entry and patches for compiling on QNX 4.
10617 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
10619 *) A demo state-machine implementation was sponsored by
10620 Nuron (http://www.nuron.com/) and is now available in
10621 demos/state_machine.
10624 *) New options added to the 'dgst' utility for signature
10625 generation and verification.
10628 *) Unrecognized PKCS#7 content types are now handled via a
10629 catch all ASN1_TYPE structure. This allows unsupported
10630 types to be stored as a "blob" and an application can
10631 encode and decode it manually.
10634 *) Fix various signed/unsigned issues to make a_strex.c
10635 compile under VC++.
10636 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
10638 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
10639 length if passed a buffer. ASN1_INTEGER_to_BN failed
10640 if passed a NULL BN and its argument was negative.
10641 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
10643 *) Modification to PKCS#7 encoding routines to output definite
10644 length encoding. Since currently the whole structures are in
10645 memory there's not real point in using indefinite length
10646 constructed encoding. However if OpenSSL is compiled with
10647 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
10650 *) Added BIO_vprintf() and BIO_vsnprintf().
10653 *) Added more prefixes to parse for in the strings written
10654 through a logging bio, to cover all the levels that are available
10655 through syslog. The prefixes are now:
10657 PANIC, EMERG, EMR => LOG_EMERG
10658 ALERT, ALR => LOG_ALERT
10659 CRIT, CRI => LOG_CRIT
10660 ERROR, ERR => LOG_ERR
10661 WARNING, WARN, WAR => LOG_WARNING
10662 NOTICE, NOTE, NOT => LOG_NOTICE
10663 INFO, INF => LOG_INFO
10664 DEBUG, DBG => LOG_DEBUG
10666 and as before, if none of those prefixes are present at the
10667 beginning of the string, LOG_ERR is chosen.
10669 On Win32, the LOG_* levels are mapped according to this:
10671 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
10672 LOG_WARNING => EVENTLOG_WARNING_TYPE
10673 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
10677 *) Made it possible to reconfigure with just the configuration
10678 argument "reconf" or "reconfigure". The command line arguments
10679 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
10680 and are retrieved from there when reconfiguring.
10683 *) MD4 implemented.
10684 [Assar Westerlund <assar@sics.se>, Richard Levitte]
10686 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
10689 *) The obj_dat.pl script was messing up the sorting of object
10690 names. The reason was that it compared the quoted version
10691 of strings as a result "OCSP" > "OCSP Signing" because
10692 " > SPACE. Changed script to store unquoted versions of
10693 names and add quotes on output. It was also omitting some
10694 names from the lookup table if they were given a default
10695 value (that is if SN is missing it is given the same
10696 value as LN and vice versa), these are now added on the
10697 grounds that if an object has a name we should be able to
10698 look it up. Finally added warning output when duplicate
10699 short or long names are found.
10702 *) Changes needed for Tandem NSK.
10703 [Scott Uroff <scott@xypro.com>]
10705 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
10706 RSA_padding_check_SSLv23(), special padding was never detected
10707 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
10708 version rollback attacks was not effective.
10710 In s23_clnt.c, don't use special rollback-attack detection padding
10711 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
10712 client; similarly, in s23_srvr.c, don't do the rollback check if
10713 SSL 2.0 is the only protocol enabled in the server.
10716 *) Make it possible to get hexdumps of unprintable data with 'openssl
10717 asn1parse'. By implication, the functions ASN1_parse_dump() and
10718 BIO_dump_indent() are added.
10721 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
10722 these print out strings and name structures based on various
10723 flags including RFC2253 support and proper handling of
10724 multibyte characters. Added options to the 'x509' utility
10725 to allow the various flags to be set.
10728 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
10729 Also change the functions X509_cmp_current_time() and
10730 X509_gmtime_adj() work with an ASN1_TIME structure,
10731 this will enable certificates using GeneralizedTime in validity
10732 dates to be checked.
10735 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
10736 negative public key encodings) on by default,
10737 NO_NEG_PUBKEY_BUG can be set to disable it.
10740 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
10741 content octets. An i2c_ASN1_OBJECT is unnecessary because
10742 the encoding can be trivially obtained from the structure.
10745 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
10746 not read locks (CRYPTO_r_[un]lock).
10749 *) A first attempt at creating official support for shared
10750 libraries through configuration. I've kept it so the
10751 default is static libraries only, and the OpenSSL programs
10752 are always statically linked for now, but there are
10753 preparations for dynamic linking in place.
10754 This has been tested on Linux and Tru64.
10757 *) Randomness polling function for Win9x, as described in:
10758 Peter Gutmann, Software Generation of Practically Strong
10762 *) Fix so PRNG is seeded in req if using an already existing
10766 *) New options to smime application. -inform and -outform
10767 allow alternative formats for the S/MIME message including
10768 PEM and DER. The -content option allows the content to be
10769 specified separately. This should allow things like Netscape
10770 form signing output easier to verify.
10773 *) Fix the ASN1 encoding of tags using the 'long form'.
10776 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
10777 STRING types. These convert content octets to and from the
10778 underlying type. The actual tag and length octets are
10779 already assumed to have been read in and checked. These
10780 are needed because all other string types have virtually
10781 identical handling apart from the tag. By having versions
10782 of the ASN1 functions that just operate on content octets
10783 IMPLICIT tagging can be handled properly. It also allows
10784 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
10785 and ASN1_INTEGER are identical apart from the tag.
10788 *) Change the handling of OID objects as follows:
10790 - New object identifiers are inserted in objects.txt, following
10791 the syntax given in objects.README.
10792 - objects.pl is used to process obj_mac.num and create a new
10794 - obj_dat.pl is used to create a new obj_dat.h, using the data in
10797 This is currently kind of a hack, and the perl code in objects.pl
10798 isn't very elegant, but it works as I intended. The simplest way
10799 to check that it worked correctly is to look in obj_dat.h and
10800 check the array nid_objs and make sure the objects haven't moved
10801 around (this is important!). Additions are OK, as well as
10802 consistent name changes.
10805 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
10808 *) Addition of the command line parameter '-rand file' to 'openssl req'.
10809 The given file adds to whatever has already been seeded into the
10810 random pool through the RANDFILE configuration file option or
10811 environment variable, or the default random state file.
10814 *) mkstack.pl now sorts each macro group into lexical order.
10815 Previously the output order depended on the order the files
10816 appeared in the directory, resulting in needless rewriting
10820 *) Patches to make OpenSSL compile under Win32 again. Mostly
10821 work arounds for the VC++ problem that it treats func() as
10822 func(void). Also stripped out the parts of mkdef.pl that
10823 added extra typesafe functions: these no longer exist.
10826 *) Reorganisation of the stack code. The macros are now all
10827 collected in safestack.h . Each macro is defined in terms of
10828 a "stack macro" of the form SKM_<name>(type, a, b). The
10829 DEBUG_SAFESTACK is now handled in terms of function casts,
10830 this has the advantage of retaining type safety without the
10831 use of additional functions. If DEBUG_SAFESTACK is not defined
10832 then the non typesafe macros are used instead. Also modified the
10833 mkstack.pl script to handle the new form. Needs testing to see
10834 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
10835 the default if no major problems. Similar behaviour for ASN1_SET_OF
10836 and PKCS12_STACK_OF.
10839 *) When some versions of IIS use the 'NET' form of private key the
10840 key derivation algorithm is different. Normally MD5(password) is
10841 used as a 128 bit RC4 key. In the modified case
10842 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
10843 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
10844 as the old Netscape_RSA functions except they have an additional
10845 'sgckey' parameter which uses the modified algorithm. Also added
10846 an -sgckey command line option to the rsa utility. Thanks to
10847 Adrian Peck <bertie@ncipher.com> for posting details of the modified
10848 algorithm to openssl-dev.
10851 *) The evp_local.h macros were using 'c.##kname' which resulted in
10852 invalid expansion on some systems (SCO 5.0.5 for example).
10853 Corrected to 'c.kname'.
10854 [Phillip Porch <root@theporch.com>]
10856 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
10857 a STACK of email addresses from a certificate or request, these look
10858 in the subject name and the subject alternative name extensions and
10859 omit any duplicate addresses.
10862 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
10863 This makes DSA verification about 2 % faster.
10866 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
10867 (meaning that now 2^5 values will be precomputed, which is only 4 KB
10868 plus overhead for 1024 bit moduli).
10869 This makes exponentiations about 0.5 % faster for 1024 bit
10870 exponents (as measured by "openssl speed rsa2048").
10873 *) Rename memory handling macros to avoid conflicts with other
10875 Malloc => OPENSSL_malloc
10876 Malloc_locked => OPENSSL_malloc_locked
10877 Realloc => OPENSSL_realloc
10878 Free => OPENSSL_free
10881 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
10882 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
10885 *) CygWin32 support.
10886 [John Jarvie <jjarvie@newsguy.com>]
10888 *) The type-safe stack code has been rejigged. It is now only compiled
10889 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
10890 by default all type-specific stack functions are "#define"d back to
10891 standard stack functions. This results in more streamlined output
10892 but retains the type-safety checking possibilities of the original
10896 *) The STACK code has been cleaned up, and certain type declarations
10897 that didn't make a lot of sense have been brought in line. This has
10898 also involved a cleanup of sorts in safestack.h to more correctly
10899 map type-safe stack functions onto their plain stack counterparts.
10900 This work has also resulted in a variety of "const"ifications of
10901 lots of the code, especially "_cmp" operations which should normally
10902 be prototyped with "const" parameters anyway.
10905 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
10906 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
10907 (The PRNG state consists of two parts, the large pool 'state' and 'md',
10908 where all of 'md' is used each time the PRNG is used, but 'state'
10909 is used only indexed by a cyclic counter. As entropy may not be
10910 well distributed from the beginning, 'md' is important as a
10911 chaining variable. However, the output function chains only half
10912 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
10913 all of 'md', and seeding with STATE_SIZE dummy bytes will result
10914 in all of 'state' being rewritten, with the new values depending
10915 on virtually all of 'md'. This overcomes the 80 bit limitation.)
10918 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
10919 the handshake is continued after ssl_verify_cert_chain();
10920 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
10921 can lead to 'unexplainable' connection aborts later.
10922 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
10924 *) Major EVP API cipher revision.
10925 Add hooks for extra EVP features. This allows various cipher
10926 parameters to be set in the EVP interface. Support added for variable
10927 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
10928 setting of RC2 and RC5 parameters.
10930 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
10933 Remove lots of duplicated code from the EVP library. For example *every*
10934 cipher init() function handles the 'iv' in the same way according to the
10935 cipher mode. They also all do nothing if the 'key' parameter is NULL and
10936 for CFB and OFB modes they zero ctx->num.
10938 New functionality allows removal of S/MIME code RC2 hack.
10940 Most of the routines have the same form and so can be declared in terms
10943 By shifting this to the top level EVP_CipherInit() it can be removed from
10944 all individual ciphers. If the cipher wants to handle IVs or keys
10945 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
10948 Change lots of functions like EVP_EncryptUpdate() to now return a
10949 value: although software versions of the algorithms cannot fail
10950 any installed hardware versions can.
10953 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
10954 this option is set, tolerate broken clients that send the negotiated
10955 protocol version number instead of the requested protocol version
10959 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
10960 i.e. non-zero for export ciphersuites, zero otherwise.
10961 Previous versions had this flag inverted, inconsistent with
10962 rsa_tmp_cb (..._TMP_RSA_CB).
10963 [Bodo Moeller; problem reported by Amit Chopra]
10965 *) Add missing DSA library text string. Work around for some IIS
10966 key files with invalid SEQUENCE encoding.
10969 *) Add a document (doc/standards.txt) that list all kinds of standards
10970 and so on that are implemented in OpenSSL.
10973 *) Enhance c_rehash script. Old version would mishandle certificates
10974 with the same subject name hash and wouldn't handle CRLs at all.
10975 Added -fingerprint option to crl utility, to support new c_rehash
10979 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
10982 *) Fix for SSL server purpose checking. Server checking was
10983 rejecting certificates which had extended key usage present
10984 but no ssl client purpose.
10985 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
10987 *) Make PKCS#12 code work with no password. The PKCS#12 spec
10988 is a little unclear about how a blank password is handled.
10989 Since the password in encoded as a BMPString with terminating
10990 double NULL a zero length password would end up as just the
10991 double NULL. However no password at all is different and is
10992 handled differently in the PKCS#12 key generation code. NS
10993 treats a blank password as zero length. MSIE treats it as no
10994 password on export: but it will try both on import. We now do
10995 the same: PKCS12_parse() tries zero length and no password if
10996 the password is set to "" or NULL (NULL is now a valid password:
10997 it wasn't before) as does the pkcs12 application.
11000 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
11001 perror when PEM_read_bio_X509_REQ fails, the error message must
11002 be obtained from the error queue.
11005 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
11006 it in ERR_remove_state if appropriate, and change ERR_get_state
11007 accordingly to avoid race conditions (this is necessary because
11008 thread_hash is no longer constant once set).
11011 *) Bugfix for linux-elf makefile.one.
11014 *) RSA_get_default_method() will now cause a default
11015 RSA_METHOD to be chosen if one doesn't exist already.
11016 Previously this was only set during a call to RSA_new()
11017 or RSA_new_method(NULL) meaning it was possible for
11018 RSA_get_default_method() to return NULL.
11021 *) Added native name translation to the existing DSO code
11022 that will convert (if the flag to do so is set) filenames
11023 that are sufficiently small and have no path information
11024 into a canonical native form. Eg. "blah" converted to
11025 "libblah.so" or "blah.dll" etc.
11028 *) New function ERR_error_string_n(e, buf, len) which is like
11029 ERR_error_string(e, buf), but writes at most 'len' bytes
11030 including the 0 terminator. For ERR_error_string_n, 'buf'
11032 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
11034 *) CONF library reworked to become more general. A new CONF
11035 configuration file reader "class" is implemented as well as a
11036 new functions (NCONF_*, for "New CONF") to handle it. The now
11037 old CONF_* functions are still there, but are reimplemented to
11038 work in terms of the new functions. Also, a set of functions
11039 to handle the internal storage of the configuration data is
11040 provided to make it easier to write new configuration file
11041 reader "classes" (I can definitely see something reading a
11042 configuration file in XML format, for example), called _CONF_*,
11043 or "the configuration storage API"...
11045 The new configuration file reading functions are:
11047 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
11048 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
11050 NCONF_default, NCONF_WIN32
11052 NCONF_dump_fp, NCONF_dump_bio
11054 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
11055 NCONF_new creates a new CONF object. This works in the same way
11056 as other interfaces in OpenSSL, like the BIO interface.
11057 NCONF_dump_* dump the internal storage of the configuration file,
11058 which is useful for debugging. All other functions take the same
11059 arguments as the old CONF_* functions with the exception of the
11060 first that must be a `CONF *' instead of a `LHASH *'.
11062 To make it easier to use the new classes with the old CONF_* functions,
11063 the function CONF_set_default_method is provided.
11066 *) Add '-tls1' option to 'openssl ciphers', which was already
11067 mentioned in the documentation but had not been implemented.
11068 (This option is not yet really useful because even the additional
11069 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
11072 *) Initial DSO code added into libcrypto for letting OpenSSL (and
11073 OpenSSL-based applications) load shared libraries and bind to
11074 them in a portable way.
11075 [Geoff Thorpe, with contributions from Richard Levitte]
11077 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
11079 *) Make sure _lrotl and _lrotr are only used with MSVC.
11081 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
11082 (the default implementation of RAND_status).
11084 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
11085 to '-clrext' (= clear extensions), as intended and documented.
11086 [Bodo Moeller; inconsistency pointed out by Michael Attili
11087 <attili@amaxo.com>]
11089 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
11090 was larger than the MD block size.
11091 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
11093 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
11094 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
11095 using the passed key: if the passed key was a private key the result
11096 of X509_print(), for example, would be to print out all the private key
11100 *) des_quad_cksum() byte order bug fix.
11101 [Ulf Möller, using the problem description in krb4-0.9.7, where
11102 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
11104 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
11106 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
11108 *) For easily testing in shell scripts whether some command
11109 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
11110 returns with exit code 0 iff no command of the given name is available.
11111 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
11112 the output goes to stdout and nothing is printed to stderr.
11113 Additional arguments are always ignored.
11115 Since for each cipher there is a command of the same name,
11116 the 'no-cipher' compilation switches can be tested this way.
11118 ('openssl no-XXX' is not able to detect pseudo-commands such
11119 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
11122 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
11125 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
11126 is set; it will be thrown away anyway because each handshake creates
11128 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
11129 to parameters -- in previous versions (since OpenSSL 0.9.3) the
11130 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
11131 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
11134 *) New s_client option -ign_eof: EOF at stdin is ignored, and
11135 'Q' and 'R' lose their special meanings (quit/renegotiate).
11136 This is part of what -quiet does; unlike -quiet, -ign_eof
11137 does not suppress any output.
11140 *) Add compatibility options to the purpose and trust code. The
11141 purpose X509_PURPOSE_ANY is "any purpose" which automatically
11142 accepts a certificate or CA, this was the previous behaviour,
11143 with all the associated security issues.
11145 X509_TRUST_COMPAT is the old trust behaviour: only and
11146 automatically trust self signed roots in certificate store. A
11147 new trust setting X509_TRUST_DEFAULT is used to specify that
11148 a purpose has no associated trust setting and it should instead
11149 use the value in the default purpose.
11152 *) Fix the PKCS#8 DSA private key code so it decodes keys again
11153 and fix a memory leak.
11156 *) In util/mkerr.pl (which implements 'make errors'), preserve
11157 reason strings from the previous version of the .c file, as
11158 the default to have only downcase letters (and digits) in
11159 automatically generated reasons codes is not always appropriate.
11162 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
11163 using strerror. Previously, ERR_reason_error_string() returned
11164 library names as reason strings for SYSerr; but SYSerr is a special
11165 case where small numbers are errno values, not library numbers.
11168 *) Add '-dsaparam' option to 'openssl dhparam' application. This
11169 converts DSA parameters into DH parameters. (When creating parameters,
11170 DSA_generate_parameters is used.)
11173 *) Include 'length' (recommended exponent length) in C code generated
11174 by 'openssl dhparam -C'.
11177 *) The second argument to set_label in perlasm was already being used
11178 so couldn't be used as a "file scope" flag. Moved to third argument
11182 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
11183 instead of RAND_bytes for encryption IVs and salts.
11186 *) Include RAND_status() into RAND_METHOD instead of implementing
11187 it only for md_rand.c Otherwise replacing the PRNG by calling
11188 RAND_set_rand_method would be impossible.
11191 *) Don't let DSA_generate_key() enter an infinite loop if the random
11192 number generation fails.
11195 *) New 'rand' application for creating pseudo-random output.
11198 *) Added configuration support for Linux/IA64
11199 [Rolf Haberrecker <rolf@suse.de>]
11201 *) Assembler module support for Mingw32.
11204 *) Shared library support for HPUX (in shlib/).
11205 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
11207 *) Shared library support for Solaris gcc.
11208 [Lutz Behnke <behnke@trustcenter.de>]
11210 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
11212 *) PKCS7_encrypt() was adding text MIME headers twice because they
11213 were added manually and by SMIME_crlf_copy().
11216 *) In bntest.c don't call BN_rand with zero bits argument.
11217 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
11219 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
11220 case was implemented. This caused BN_div_recp() to fail occasionally.
11223 *) Add an optional second argument to the set_label() in the perl
11224 assembly language builder. If this argument exists and is set
11225 to 1 it signals that the assembler should use a symbol whose
11226 scope is the entire file, not just the current function. This
11227 is needed with MASM which uses the format label:: for this scope.
11228 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
11230 *) Change the ASN1 types so they are typedefs by default. Before
11231 almost all types were #define'd to ASN1_STRING which was causing
11232 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
11236 *) Change names of new functions to the new get1/get0 naming
11237 convention: After 'get1', the caller owns a reference count
11238 and has to call ..._free; 'get0' returns a pointer to some
11239 data structure without incrementing reference counters.
11240 (Some of the existing 'get' functions increment a reference
11241 counter, some don't.)
11242 Similarly, 'set1' and 'add1' functions increase reference
11243 counters or duplicate objects.
11246 *) Allow for the possibility of temp RSA key generation failure:
11247 the code used to assume it always worked and crashed on failure.
11250 *) Fix potential buffer overrun problem in BIO_printf().
11251 [Ulf Möller, using public domain code by Patrick Powell; problem
11252 pointed out by David Sacerdote <das33@cornell.edu>]
11254 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
11255 RAND_egd() and RAND_status(). In the command line application,
11256 the EGD socket can be specified like a seed file using RANDFILE
11260 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
11261 Some CAs (e.g. Verisign) distribute certificates in this form.
11264 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
11265 list to exclude them. This means that no special compilation option
11266 is needed to use anonymous DH: it just needs to be included in the
11270 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
11271 EVP_MD_type. The old functionality is available in a new macro called
11272 EVP_MD_md(). Change code that uses it and update docs.
11275 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
11276 where the 'void *' argument is replaced by a function pointer argument.
11277 Previously 'void *' was abused to point to functions, which works on
11278 many platforms, but is not correct. As these functions are usually
11279 called by macros defined in OpenSSL header files, most source code
11280 should work without changes.
11283 *) <openssl/opensslconf.h> (which is created by Configure) now contains
11284 sections with information on -D... compiler switches used for
11285 compiling the library so that applications can see them. To enable
11286 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
11287 must be defined. E.g.,
11288 #define OPENSSL_ALGORITHM_DEFINES
11289 #include <openssl/opensslconf.h>
11290 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
11291 [Richard Levitte, Ulf and Bodo Möller]
11293 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
11297 *) Change the 'other' type in certificate aux info to a STACK_OF
11298 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
11299 the required ASN1 format: arbitrary types determined by an OID.
11302 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
11303 argument to 'req'. This is not because the function is newer or
11304 better than others it just uses the work 'NEW' in the certificate
11305 request header lines. Some software needs this.
11308 *) Reorganise password command line arguments: now passwords can be
11309 obtained from various sources. Delete the PEM_cb function and make
11310 it the default behaviour: i.e. if the callback is NULL and the
11311 usrdata argument is not NULL interpret it as a null terminated pass
11312 phrase. If usrdata and the callback are NULL then the pass phrase
11313 is prompted for as usual.
11316 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
11317 the support is automatically enabled. The resulting binaries will
11318 autodetect the card and use it if present.
11319 [Ben Laurie and Compaq Inc.]
11321 *) Work around for Netscape hang bug. This sends certificate request
11322 and server done in one record. Since this is perfectly legal in the
11323 SSL/TLS protocol it isn't a "bug" option and is on by default. See
11324 the bugs/SSLv3 entry for more info.
11327 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
11330 *) Add -rand argument to smime and pkcs12 applications and read/write
11334 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
11337 *) Add command line password options to the remaining applications.
11340 *) Bug fix for BN_div_recp() for numerators with an even number of
11344 *) More tests in bntest.c, and changed test_bn output.
11347 *) ./config recognizes MacOS X now.
11350 *) Bug fix for BN_div() when the first words of num and divisor are
11351 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
11354 *) Add support for various broken PKCS#8 formats, and command line
11355 options to produce them.
11358 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
11359 get temporary BIGNUMs from a BN_CTX.
11362 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
11366 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
11367 include a #define from the old name to the new. The original intent
11368 was that statically linked binaries could for example just call
11369 SSLeay_add_all_ciphers() to just add ciphers to the table and not
11370 link with digests. This never worked because SSLeay_add_all_digests()
11371 and SSLeay_add_all_ciphers() were in the same source file so calling
11372 one would link with the other. They are now in separate source files.
11375 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
11378 *) Use a less unusual form of the Miller-Rabin primality test (it used
11379 a binary algorithm for exponentiation integrated into the Miller-Rabin
11380 loop, our standard modexp algorithms are faster).
11383 *) Support for the EBCDIC character set completed.
11384 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
11386 *) Source code cleanups: use const where appropriate, eliminate casts,
11387 use void * instead of char * in lhash.
11390 *) Bugfix: ssl3_send_server_key_exchange was not restartable
11391 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
11392 this the server could overwrite ephemeral keys that the client
11396 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
11397 using 50 iterations of the Rabin-Miller test.
11399 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
11400 iterations of the Rabin-Miller test as required by the appendix
11401 to FIPS PUB 186[-1]) instead of DSA_is_prime.
11402 As BN_is_prime_fasttest includes trial division, DSA parameter
11403 generation becomes much faster.
11405 This implies a change for the callback functions in DSA_is_prime
11406 and DSA_generate_parameters: The callback function is called once
11407 for each positive witness in the Rabin-Miller test, not just
11408 occasionally in the inner loop; and the parameters to the
11409 callback function now provide an iteration count for the outer
11410 loop rather than for the current invocation of the inner loop.
11411 DSA_generate_parameters additionally can call the callback
11412 function with an 'iteration count' of -1, meaning that a
11413 candidate has passed the trial division test (when q is generated
11414 from an application-provided seed, trial division is skipped).
11417 *) New function BN_is_prime_fasttest that optionally does trial
11418 division before starting the Rabin-Miller test and has
11419 an additional BN_CTX * argument (whereas BN_is_prime always
11420 has to allocate at least one BN_CTX).
11421 'callback(1, -1, cb_arg)' is called when a number has passed the
11422 trial division stage.
11425 *) Fix for bug in CRL encoding. The validity dates weren't being handled
11429 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
11432 *) New function BN_pseudo_rand().
11435 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
11436 bignum version of BN_from_montgomery() with the working code from
11437 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
11441 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
11442 made it impossible to use the same SSL_SESSION data structure in
11443 SSL2 clients in multiple threads.
11446 *) The return value of RAND_load_file() no longer counts bytes obtained
11447 by stat(). RAND_load_file(..., -1) is new and uses the complete file
11448 to seed the PRNG (previously an explicit byte count was required).
11449 [Ulf Möller, Bodo Möller]
11451 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
11452 used (char *) instead of (void *) and had casts all over the place.
11455 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
11458 *) Retain source code compatibility for BN_prime_checks macro:
11459 BN_is_prime(..., BN_prime_checks, ...) now uses
11460 BN_prime_checks_for_size to determine the appropriate number of
11461 Rabin-Miller iterations.
11464 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
11465 DH_CHECK_P_NOT_SAFE_PRIME.
11466 (Check if this is true? OpenPGP calls them "strong".)
11469 *) Merge the functionality of "dh" and "gendh" programs into a new program
11470 "dhparam". The old programs are retained for now but will handle DH keys
11471 (instead of parameters) in future.
11474 *) Make the ciphers, s_server and s_client programs check the return values
11475 when a new cipher list is set.
11478 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
11479 ciphers. Before when the 56bit ciphers were enabled the sorting was
11482 The syntax for the cipher sorting has been extended to support sorting by
11483 cipher-strength (using the strength_bits hard coded in the tables).
11484 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
11486 Fix a bug in the cipher-command parser: when supplying a cipher command
11487 string with an "undefined" symbol (neither command nor alphanumeric
11488 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
11489 an error is flagged.
11491 Due to the strength-sorting extension, the code of the
11492 ssl_create_cipher_list() function was completely rearranged. I hope that
11493 the readability was also increased :-)
11494 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
11496 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
11497 for the first serial number and places 2 in the serial number file. This
11498 avoids problems when the root CA is created with serial number zero and
11499 the first user certificate has the same issuer name and serial number
11503 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
11504 the new code. Add documentation for this stuff.
11507 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
11508 X509_*() to X509at_*() on the grounds that they don't handle X509
11509 structures and behave in an analogous way to the X509v3 functions:
11510 they shouldn't be called directly but wrapper functions should be used
11513 So we also now have some wrapper functions that call the X509at functions
11514 when passed certificate requests. (TO DO: similar things can be done with
11515 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
11516 things. Some of these need some d2i or i2d and print functionality
11517 because they handle more complex structures.)
11520 *) Add missing #ifndefs that caused missing symbols when building libssl
11521 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
11522 NO_RSA in ssl/s2*.c.
11523 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
11525 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
11526 has a return value which indicates the quality of the random data
11527 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
11528 error queue. New function RAND_pseudo_bytes() generates output that is
11529 guaranteed to be unique but not unpredictable. RAND_add is like
11530 RAND_seed, but takes an extra argument for an entropy estimate
11531 (RAND_seed always assumes full entropy).
11534 *) Do more iterations of Rabin-Miller probable prime test (specifically,
11535 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
11536 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
11537 in crypto/bn/bn_prime.c for the complete table). This guarantees a
11538 false-positive rate of at most 2^-80 for random input.
11541 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
11544 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
11545 in the 0.9.5 release), this returns the chain
11546 from an X509_CTX structure with a dup of the stack and all
11547 the X509 reference counts upped: so the stack will exist
11548 after X509_CTX_cleanup() has been called. Modify pkcs12.c
11551 Also make SSL_SESSION_print() print out the verify return
11555 *) Add manpage for the pkcs12 command. Also change the default
11556 behaviour so MAC iteration counts are used unless the new
11557 -nomaciter option is used. This improves file security and
11558 only older versions of MSIE (4.0 for example) need it.
11561 *) Honor the no-xxx Configure options when creating .DEF files.
11564 *) Add PKCS#10 attributes to field table: challengePassword,
11565 unstructuredName and unstructuredAddress. These are taken from
11566 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
11567 international characters are used.
11569 More changes to X509_ATTRIBUTE code: allow the setting of types
11570 based on strings. Remove the 'loc' parameter when adding
11571 attributes because these will be a SET OF encoding which is sorted
11575 *) Initial changes to the 'req' utility to allow request generation
11576 automation. This will allow an application to just generate a template
11577 file containing all the field values and have req construct the
11580 Initial support for X509_ATTRIBUTE handling. Stacks of these are
11581 used all over the place including certificate requests and PKCS#7
11582 structures. They are currently handled manually where necessary with
11583 some primitive wrappers for PKCS#7. The new functions behave in a
11584 manner analogous to the X509 extension functions: they allow
11585 attributes to be looked up by NID and added.
11587 Later something similar to the X509V3 code would be desirable to
11588 automatically handle the encoding, decoding and printing of the
11589 more complex types. The string types like challengePassword can
11590 be handled by the string table functions.
11592 Also modified the multi byte string table handling. Now there is
11593 a 'global mask' which masks out certain types. The table itself
11594 can use the flag STABLE_NO_MASK to ignore the mask setting: this
11595 is useful when for example there is only one permissible type
11596 (as in countryName) and using the mask might result in no valid
11600 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
11601 SSL_get_peer_finished to allow applications to obtain the latest
11602 Finished messages sent to the peer or expected from the peer,
11603 respectively. (SSL_get_peer_finished is usually the Finished message
11604 actually received from the peer, otherwise the protocol will be aborted.)
11606 As the Finished message are message digests of the complete handshake
11607 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
11608 be used for external authentication procedures when the authentication
11609 provided by SSL/TLS is not desired or is not enough.
11612 *) Enhanced support for Alpha Linux is added. Now ./config checks if
11613 the host supports BWX extension and if Compaq C is present on the
11614 $PATH. Just exploiting of the BWX extension results in 20-30%
11615 performance kick for some algorithms, e.g. DES and RC4 to mention
11616 a couple. Compaq C in turn generates ~20% faster code for MD5 and
11620 *) Add support for MS "fast SGC". This is arguably a violation of the
11621 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
11622 weak crypto and after checking the certificate is SGC a second one
11623 with strong crypto. MS SGC stops the first handshake after receiving
11624 the server certificate message and sends a second client hello. Since
11625 a server will typically do all the time consuming operations before
11626 expecting any further messages from the client (server key exchange
11627 is the most expensive) there is little difference between the two.
11629 To get OpenSSL to support MS SGC we have to permit a second client
11630 hello message after we have sent server done. In addition we have to
11631 reset the MAC if we do get this second client hello.
11634 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
11635 if a DER encoded private key is RSA or DSA traditional format. Changed
11636 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
11637 format DER encoded private key. Newer code should use PKCS#8 format which
11638 has the key type encoded in the ASN1 structure. Added DER private key
11639 support to pkcs8 application.
11642 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
11643 ciphersuites has been selected (as required by the SSL 3/TLS 1
11644 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
11645 is set, we interpret this as a request to violate the specification
11646 (the worst that can happen is a handshake failure, and 'correct'
11647 behaviour would result in a handshake failure anyway).
11650 *) In SSL_CTX_add_session, take into account that there might be multiple
11651 SSL_SESSION structures with the same session ID (e.g. when two threads
11652 concurrently obtain them from an external cache).
11653 The internal cache can handle only one SSL_SESSION with a given ID,
11654 so if there's a conflict, we now throw out the old one to achieve
11658 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
11659 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
11660 some routines that use cipher OIDs: some ciphers do not have OIDs
11661 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
11665 *) Simplify the trust setting structure and code. Now we just have
11666 two sequences of OIDs for trusted and rejected settings. These will
11667 typically have values the same as the extended key usage extension
11668 and any application specific purposes.
11670 The trust checking code now has a default behaviour: it will just
11671 check for an object with the same NID as the passed id. Functions can
11672 be provided to override either the default behaviour or the behaviour
11673 for a given id. SSL client, server and email already have functions
11674 in place for compatibility: they check the NID and also return "trusted"
11675 if the certificate is self signed.
11678 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
11679 traditional format into an EVP_PKEY structure.
11682 *) Add a password callback function PEM_cb() which either prompts for
11683 a password if usr_data is NULL or otherwise assumes it is a null
11684 terminated password. Allow passwords to be passed on command line
11685 environment or config files in a few more utilities.
11688 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
11689 keys. Add some short names for PKCS#8 PBE algorithms and allow them
11690 to be specified on the command line for the pkcs8 and pkcs12 utilities.
11691 Update documentation.
11694 *) Support for ASN1 "NULL" type. This could be handled before by using
11695 ASN1_TYPE but there wasn't any function that would try to read a NULL
11696 and produce an error if it couldn't. For compatibility we also have
11697 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
11698 don't allocate anything because they don't need to.
11701 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
11703 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
11705 *) Rebuild of the memory allocation routines used by OpenSSL code and
11706 possibly others as well. The purpose is to make an interface that
11707 provide hooks so anyone can build a separate set of allocation and
11708 deallocation routines to be used by OpenSSL, for example memory
11709 pool implementations, or something else, which was previously hard
11710 since Malloc(), Realloc() and Free() were defined as macros having
11711 the values malloc, realloc and free, respectively (except for Win32
11712 compilations). The same is provided for memory debugging code.
11713 OpenSSL already comes with functionality to find memory leaks, but
11714 this gives people a chance to debug other memory problems.
11716 With these changes, a new set of functions and macros have appeared:
11718 CRYPTO_set_mem_debug_functions() [F]
11719 CRYPTO_get_mem_debug_functions() [F]
11720 CRYPTO_dbg_set_options() [F]
11721 CRYPTO_dbg_get_options() [F]
11722 CRYPTO_malloc_debug_init() [M]
11724 The memory debug functions are NULL by default, unless the library
11725 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
11726 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
11727 gives the standard debugging functions that come with OpenSSL) or
11728 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
11729 provided by the library user) must be used. When the standard
11730 debugging functions are used, CRYPTO_dbg_set_options can be used to
11731 request additional information:
11732 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
11733 the CRYPTO_MDEBUG_xxx macro when compiling the library.
11735 Also, things like CRYPTO_set_mem_functions will always give the
11736 expected result (the new set of functions is used for allocation
11737 and deallocation) at all times, regardless of platform and compiler
11740 To finish it up, some functions that were never use in any other
11741 way than through macros have a new API and new semantic:
11743 CRYPTO_dbg_malloc()
11744 CRYPTO_dbg_realloc()
11747 All macros of value have retained their old syntax.
11748 [Richard Levitte and Bodo Moeller]
11750 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
11751 ordering of SMIMECapabilities wasn't in "strength order" and there
11752 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
11756 *) Some ASN1 types with illegal zero length encoding (INTEGER,
11757 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
11758 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
11760 *) Merge in my S/MIME library for OpenSSL. This provides a simple
11761 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
11762 functionality to handle multipart/signed properly) and a utility
11763 called 'smime' to call all this stuff. This is based on code I
11764 originally wrote for Celo who have kindly allowed it to be
11765 included in OpenSSL.
11768 *) Add variants des_set_key_checked and des_set_key_unchecked of
11769 des_set_key (aka des_key_sched). Global variable des_check_key
11770 decides which of these is called by des_set_key; this way
11771 des_check_key behaves as it always did, but applications and
11772 the library itself, which was buggy for des_check_key == 1,
11773 have a cleaner way to pick the version they need.
11776 *) New function PKCS12_newpass() which changes the password of a
11780 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
11781 dynamic mix. In both cases the ids can be used as an index into the
11782 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
11783 functions so they accept a list of the field values and the
11784 application doesn't need to directly manipulate the X509_TRUST
11788 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
11792 *) Modify the way the V3 extension code looks up extensions. This now
11793 works in a similar way to the object code: we have some "standard"
11794 extensions in a static table which is searched with OBJ_bsearch()
11795 and the application can add dynamic ones if needed. The file
11796 crypto/x509v3/ext_dat.h now has the info: this file needs to be
11797 updated whenever a new extension is added to the core code and kept
11798 in ext_nid order. There is a simple program 'tabtest.c' which checks
11799 this. New extensions are not added too often so this file can readily
11800 be maintained manually.
11802 There are two big advantages in doing things this way. The extensions
11803 can be looked up immediately and no longer need to be "added" using
11804 X509V3_add_standard_extensions(): this function now does nothing.
11805 [Side note: I get *lots* of email saying the extension code doesn't
11806 work because people forget to call this function]
11807 Also no dynamic allocation is done unless new extensions are added:
11808 so if we don't add custom extensions there is no need to call
11809 X509V3_EXT_cleanup().
11812 *) Modify enc utility's salting as follows: make salting the default. Add a
11813 magic header, so unsalted files fail gracefully instead of just decrypting
11814 to garbage. This is because not salting is a big security hole, so people
11815 should be discouraged from doing it.
11818 *) Fixes and enhancements to the 'x509' utility. It allowed a message
11819 digest to be passed on the command line but it only used this
11820 parameter when signing a certificate. Modified so all relevant
11821 operations are affected by the digest parameter including the
11822 -fingerprint and -x509toreq options. Also -x509toreq choked if a
11823 DSA key was used because it didn't fix the digest.
11826 *) Initial certificate chain verify code. Currently tests the untrusted
11827 certificates for consistency with the verify purpose (which is set
11828 when the X509_STORE_CTX structure is set up) and checks the pathlength.
11830 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
11831 this is because it will reject chains with invalid extensions whereas
11832 every previous version of OpenSSL and SSLeay made no checks at all.
11834 Trust code: checks the root CA for the relevant trust settings. Trust
11835 settings have an initial value consistent with the verify purpose: e.g.
11836 if the verify purpose is for SSL client use it expects the CA to be
11837 trusted for SSL client use. However the default value can be changed to
11838 permit custom trust settings: one example of this would be to only trust
11839 certificates from a specific "secure" set of CAs.
11841 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
11842 which should be used for version portability: especially since the
11843 verify structure is likely to change more often now.
11845 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
11846 to set them. If not set then assume SSL clients will verify SSL servers
11849 Two new options to the verify program: -untrusted allows a set of
11850 untrusted certificates to be passed in and -purpose which sets the
11851 intended purpose of the certificate. If a purpose is set then the
11852 new chain verify code is used to check extension consistency.
11855 *) Support for the authority information access extension.
11858 *) Modify RSA and DSA PEM read routines to transparently handle
11859 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
11860 public keys in a format compatible with certificate
11861 SubjectPublicKeyInfo structures. Unfortunately there were already
11862 functions called *_PublicKey_* which used various odd formats so
11863 these are retained for compatibility: however the DSA variants were
11864 never in a public release so they have been deleted. Changed dsa/rsa
11865 utilities to handle the new format: note no releases ever handled public
11866 keys so we should be OK.
11868 The primary motivation for this change is to avoid the same fiasco
11869 that dogs private keys: there are several incompatible private key
11870 formats some of which are standard and some OpenSSL specific and
11871 require various evil hacks to allow partial transparent handling and
11872 even then it doesn't work with DER formats. Given the option anything
11873 other than PKCS#8 should be dumped: but the other formats have to
11874 stay in the name of compatibility.
11876 With public keys and the benefit of hindsight one standard format
11877 is used which works with EVP_PKEY, RSA or DSA structures: though
11878 it clearly returns an error if you try to read the wrong kind of key.
11880 Added a -pubkey option to the 'x509' utility to output the public key.
11881 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
11882 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
11883 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
11884 that do the same as the EVP_PKEY_assign_*() except they up the
11885 reference count of the added key (they don't "swallow" the
11889 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
11890 CRLs would fail if the file contained no certificates or no CRLs:
11891 added a new function to read in both types and return the number
11892 read: this means that if none are read it will be an error. The
11893 DER versions of the certificate and CRL reader would always fail
11894 because it isn't possible to mix certificates and CRLs in DER format
11895 without choking one or the other routine. Changed this to just read
11896 a certificate: this is the best we can do. Also modified the code
11897 in apps/verify.c to take notice of return codes: it was previously
11898 attempting to read in certificates from NULL pointers and ignoring
11899 any errors: this is one reason why the cert and CRL reader seemed
11900 to work. It doesn't check return codes from the default certificate
11901 routines: these may well fail if the certificates aren't installed.
11904 *) Code to support otherName option in GeneralName.
11907 *) First update to verify code. Change the verify utility
11908 so it warns if it is passed a self signed certificate:
11909 for consistency with the normal behaviour. X509_verify
11910 has been modified to it will now verify a self signed
11911 certificate if *exactly* the same certificate appears
11912 in the store: it was previously impossible to trust a
11913 single self signed certificate. This means that:
11914 openssl verify ss.pem
11915 now gives a warning about a self signed certificate but
11916 openssl verify -CAfile ss.pem ss.pem
11920 *) For servers, store verify_result in SSL_SESSION data structure
11921 (and add it to external session representation).
11922 This is needed when client certificate verifications fails,
11923 but an application-provided verification callback (set by
11924 SSL_CTX_set_cert_verify_callback) allows accepting the session
11925 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
11926 but returns 1): When the session is reused, we have to set
11927 ssl->verify_result to the appropriate error code to avoid
11929 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
11931 *) Fix a bug in the new PKCS#7 code: it didn't consider the
11932 case in PKCS7_dataInit() where the signed PKCS7 structure
11933 didn't contain any existing data because it was being created.
11934 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
11936 *) Add a salt to the key derivation routines in enc.c. This
11937 forms the first 8 bytes of the encrypted file. Also add a
11938 -S option to allow a salt to be input on the command line.
11941 *) New function X509_cmp(). Oddly enough there wasn't a function
11942 to compare two certificates. We do this by working out the SHA1
11943 hash and comparing that. X509_cmp() will be needed by the trust
11947 *) SSL_get1_session() is like SSL_get_session(), but increments
11948 the reference count in the SSL_SESSION returned.
11949 [Geoff Thorpe <geoff@eu.c2.net>]
11951 *) Fix for 'req': it was adding a null to request attributes.
11952 Also change the X509_LOOKUP and X509_INFO code to handle
11953 certificate auxiliary information.
11956 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
11960 *) Add the possibility to add extra information to the memory leak
11961 detecting output, to form tracebacks, showing from where each
11962 allocation was originated: CRYPTO_push_info("constant string") adds
11963 the string plus current file name and line number to a per-thread
11964 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
11965 is like calling CYRPTO_pop_info() until the stack is empty.
11966 Also updated memory leak detection code to be multi-thread-safe.
11969 *) Add options -text and -noout to pkcs7 utility and delete the
11970 encryption options which never did anything. Update docs.
11973 *) Add options to some of the utilities to allow the pass phrase
11974 to be included on either the command line (not recommended on
11975 OSes like Unix) or read from the environment. Update the
11976 manpages and fix a few bugs.
11979 *) Add a few manpages for some of the openssl commands.
11982 *) Fix the -revoke option in ca. It was freeing up memory twice,
11983 leaking and not finding already revoked certificates.
11986 *) Extensive changes to support certificate auxiliary information.
11987 This involves the use of X509_CERT_AUX structure and X509_AUX
11988 functions. An X509_AUX function such as PEM_read_X509_AUX()
11989 can still read in a certificate file in the usual way but it
11990 will also read in any additional "auxiliary information". By
11991 doing things this way a fair degree of compatibility can be
11992 retained: existing certificates can have this information added
11993 using the new 'x509' options.
11995 Current auxiliary information includes an "alias" and some trust
11996 settings. The trust settings will ultimately be used in enhanced
11997 certificate chain verification routines: currently a certificate
11998 can only be trusted if it is self signed and then it is trusted
12002 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
12003 The problem was that one of the replacement routines had not been working
12004 since SSLeay releases. For now the offending routine has been replaced
12005 with non-optimised assembler. Even so, this now gives around 95%
12006 performance improvement for 1024 bit RSA signs.
12009 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
12010 handling. Most clients have the effective key size in bits equal to
12011 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
12012 A few however don't do this and instead use the size of the decrypted key
12013 to determine the RC2 key length and the AlgorithmIdentifier to determine
12014 the effective key length. In this case the effective key length can still
12015 be 40 bits but the key length can be 168 bits for example. This is fixed
12016 by manually forcing an RC2 key into the EVP_PKEY structure because the
12017 EVP code can't currently handle unusual RC2 key sizes: it always assumes
12018 the key length and effective key length are equal.
12021 *) Add a bunch of functions that should simplify the creation of
12022 X509_NAME structures. Now you should be able to do:
12023 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
12024 and have it automatically work out the correct field type and fill in
12025 the structures. The more adventurous can try:
12026 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
12027 and it will (hopefully) work out the correct multibyte encoding.
12030 *) Change the 'req' utility to use the new field handling and multibyte
12031 copy routines. Before the DN field creation was handled in an ad hoc
12032 way in req, ca, and x509 which was rather broken and didn't support
12033 BMPStrings or UTF8Strings. Since some software doesn't implement
12034 BMPStrings or UTF8Strings yet, they can be enabled using the config file
12035 using the dirstring_type option. See the new comment in the default
12036 openssl.cnf for more info.
12039 *) Make crypto/rand/md_rand.c more robust:
12040 - Assure unique random numbers after fork().
12041 - Make sure that concurrent threads access the global counter and
12042 md serializably so that we never lose entropy in them
12043 or use exactly the same state in multiple threads.
12044 Access to the large state is not always serializable because
12045 the additional locking could be a performance killer, and
12046 md should be large enough anyway.
12049 *) New file apps/app_rand.c with commonly needed functionality
12050 for handling the random seed file.
12052 Use the random seed file in some applications that previously did not:
12054 dsaparam -genkey (which also ignored its '-rand' option),
12057 x509 (when signing).
12058 Except on systems with /dev/urandom, it is crucial to have a random
12059 seed file at least for key creation, DSA signing, and for DH exchanges;
12060 for RSA signatures we could do without one.
12062 gendh and gendsa (unlike genrsa) used to read only the first byte
12063 of each file listed in the '-rand' option. The function as previously
12064 found in genrsa is now in app_rand.c and is used by all programs
12065 that support '-rand'.
12068 *) In RAND_write_file, use mode 0600 for creating files;
12069 don't just chmod when it may be too late.
12072 *) Report an error from X509_STORE_load_locations
12073 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
12076 *) New function ASN1_mbstring_copy() this copies a string in either
12077 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
12078 into an ASN1_STRING type. A mask of permissible types is passed
12079 and it chooses the "minimal" type to use or an error if not type
12083 *) Add function equivalents to the various macros in asn1.h. The old
12084 macros are retained with an M_ prefix. Code inside the library can
12085 use the M_ macros. External code (including the openssl utility)
12086 should *NOT* in order to be "shared library friendly".
12089 *) Add various functions that can check a certificate's extensions
12090 to see if it usable for various purposes such as SSL client,
12091 server or S/MIME and CAs of these types. This is currently
12092 VERY EXPERIMENTAL but will ultimately be used for certificate chain
12093 verification. Also added a -purpose flag to x509 utility to
12094 print out all the purposes.
12097 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
12101 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
12102 for, obtain and decode and extension and obtain its critical flag.
12103 This allows all the necessary extension code to be handled in a
12104 single function call.
12107 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
12108 platforms. See crypto/rc4/rc4_enc.c for further details.
12111 *) New -noout option to asn1parse. This causes no output to be produced
12112 its main use is when combined with -strparse and -out to extract data
12113 from a file (which may not be in ASN.1 format).
12116 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
12117 when producing the local key id.
12118 [Richard Levitte <levitte@stacken.kth.se>]
12120 *) New option -dhparam in s_server. This allows a DH parameter file to be
12121 stated explicitly. If it is not stated then it tries the first server
12122 certificate file. The previous behaviour hard coded the filename
12126 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
12127 a public key to be input or output. For example:
12128 openssl rsa -in key.pem -pubout -out pubkey.pem
12129 Also added necessary DSA public key functions to handle this.
12132 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
12133 in the message. This was handled by allowing
12134 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
12135 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
12137 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
12138 to the end of the strings whereas this didn't. This would cause problems
12139 if strings read with d2i_ASN1_bytes() were later modified.
12140 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
12142 *) Fix for base64 decode bug. When a base64 bio reads only one line of
12143 data and it contains EOF it will end up returning an error. This is
12144 caused by input 46 bytes long. The cause is due to the way base64
12145 BIOs find the start of base64 encoded data. They do this by trying a
12146 trial decode on each line until they find one that works. When they
12147 do a flag is set and it starts again knowing it can pass all the
12148 data directly through the decoder. Unfortunately it doesn't reset
12149 the context it uses. This means that if EOF is reached an attempt
12150 is made to pass two EOFs through the context and this causes the
12151 resulting error. This can also cause other problems as well. As is
12152 usual with these problems it takes *ages* to find and the fix is
12153 trivial: move one line.
12154 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
12156 *) Ugly workaround to get s_client and s_server working under Windows. The
12157 old code wouldn't work because it needed to select() on sockets and the
12158 tty (for keypresses and to see if data could be written). Win32 only
12159 supports select() on sockets so we select() with a 1s timeout on the
12160 sockets and then see if any characters are waiting to be read, if none
12161 are present then we retry, we also assume we can always write data to
12162 the tty. This isn't nice because the code then blocks until we've
12163 received a complete line of data and it is effectively polling the
12164 keyboard at 1s intervals: however it's quite a bit better than not
12165 working at all :-) A dedicated Windows application might handle this
12166 with an event loop for example.
12169 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
12170 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
12171 will be called when RSA_sign() and RSA_verify() are used. This is useful
12172 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
12173 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
12174 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
12175 This necessitated the support of an extra signature type NID_md5_sha1
12176 for SSL signatures and modifications to the SSL library to use it instead
12177 of calling RSA_public_decrypt() and RSA_private_encrypt().
12180 *) Add new -verify -CAfile and -CApath options to the crl program, these
12181 will lookup a CRL issuers certificate and verify the signature in a
12182 similar way to the verify program. Tidy up the crl program so it
12183 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
12184 less strict. It will now permit CRL extensions even if it is not
12185 a V2 CRL: this will allow it to tolerate some broken CRLs.
12188 *) Initialize all non-automatic variables each time one of the openssl
12189 sub-programs is started (this is necessary as they may be started
12190 multiple times from the "OpenSSL>" prompt).
12191 [Lennart Bang, Bodo Moeller]
12193 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
12194 removing all other RSA functionality (this is what NO_RSA does). This
12195 is so (for example) those in the US can disable those operations covered
12196 by the RSA patent while allowing storage and parsing of RSA keys and RSA
12200 *) Non-copying interface to BIO pairs.
12201 (still largely untested)
12204 *) New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
12205 ASCII string. This was handled independently in various places before.
12208 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
12209 UTF8 strings a character at a time.
12212 *) Use client_version from client hello to select the protocol
12213 (s23_srvr.c) and for RSA client key exchange verification
12214 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
12217 *) Add various utility functions to handle SPKACs, these were previously
12218 handled by poking round in the structure internals. Added new function
12219 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
12220 print, verify and generate SPKACs. Based on an original idea from
12221 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
12224 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
12227 *) Allow the config file extension section to be overwritten on the
12228 command line. Based on an original idea from Massimiliano Pala
12229 <madwolf@comune.modena.it>. The new option is called -extensions
12230 and can be applied to ca, req and x509. Also -reqexts to override
12231 the request extensions in req and -crlexts to override the crl extensions
12235 *) Add new feature to the SPKAC handling in ca. Now you can include
12236 the same field multiple times by preceding it by "XXXX." for example:
12239 this is the same syntax as used in the req config file.
12242 *) Allow certificate extensions to be added to certificate requests. These
12243 are specified in a 'req_extensions' option of the req section of the
12244 config file. They can be printed out with the -text option to req but
12245 are otherwise ignored at present.
12248 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
12249 data read consists of only the final block it would not decrypted because
12250 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
12251 A misplaced 'break' also meant the decrypted final block might not be
12252 copied until the next read.
12255 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
12256 a few extra parameters to the DH structure: these will be useful if
12257 for example we want the value of 'q' or implement X9.42 DH.
12260 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
12261 provides hooks that allow the default DSA functions or functions on a
12262 "per key" basis to be replaced. This allows hardware acceleration and
12263 hardware key storage to be handled without major modification to the
12264 library. Also added low level modexp hooks and CRYPTO_EX structure and
12265 associated functions.
12268 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
12269 as "read only": it can't be written to and the buffer it points to will
12270 not be freed. Reading from a read only BIO is much more efficient than
12271 a normal memory BIO. This was added because there are several times when
12272 an area of memory needs to be read from a BIO. The previous method was
12273 to create a memory BIO and write the data to it, this results in two
12274 copies of the data and an O(n^2) reading algorithm. There is a new
12275 function BIO_new_mem_buf() which creates a read only memory BIO from
12276 an area of memory. Also modified the PKCS#7 routines to use read only
12280 *) Bugfix: ssl23_get_client_hello did not work properly when called in
12281 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
12282 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
12283 but a retry condition occurred while trying to read the rest.
12286 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
12287 NID_pkcs7_encrypted by default: this was wrong since this should almost
12288 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
12289 the encrypted data type: this is a more sensible place to put it and it
12290 allows the PKCS#12 code to be tidied up that duplicated this
12294 *) Changed obj_dat.pl script so it takes its input and output files on
12295 the command line. This should avoid shell escape redirection problems
12299 *) Initial support for certificate extension requests, these are included
12300 in things like Xenroll certificate requests. Included functions to allow
12301 extensions to be obtained and added.
12304 *) -crlf option to s_client and s_server for sending newlines as
12305 CRLF (as required by many protocols).
12308 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
12310 *) Install libRSAglue.a when OpenSSL is built with RSAref.
12311 [Ralf S. Engelschall]
12313 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
12314 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
12316 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
12320 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
12321 DH parameters/keys (q is lost during that conversion, but the resulting
12322 DH parameters contain its length).
12324 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
12325 much faster than DH_generate_parameters (which creates parameters
12326 where p = 2*q + 1), and also the smaller q makes DH computations
12327 much more efficient (160-bit exponentiation instead of 1024-bit
12328 exponentiation); so this provides a convenient way to support DHE
12329 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
12330 utter importance to use
12331 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12333 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12334 when such DH parameters are used, because otherwise small subgroup
12335 attacks may become possible!
12338 *) Avoid memory leak in i2d_DHparams.
12341 *) Allow the -k option to be used more than once in the enc program:
12342 this allows the same encrypted message to be read by multiple recipients.
12345 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
12346 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
12347 it will always use the numerical form of the OID, even if it has a short
12351 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
12352 method only got called if p,q,dmp1,dmq1,iqmp components were present,
12353 otherwise bn_mod_exp was called. In the case of hardware keys for example
12354 no private key components need be present and it might store extra data
12355 in the RSA structure, which cannot be accessed from bn_mod_exp.
12356 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
12357 private key operations.
12360 *) Added support for SPARC Linux.
12363 *) pem_password_cb function type incompatibly changed from
12364 typedef int pem_password_cb(char *buf, int size, int rwflag);
12366 ....(char *buf, int size, int rwflag, void *userdata);
12367 so that applications can pass data to their callbacks:
12368 The PEM[_ASN1]_{read,write}... functions and macros now take an
12369 additional void * argument, which is just handed through whenever
12370 the password callback is called.
12371 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
12373 New function SSL_CTX_set_default_passwd_cb_userdata.
12375 Compatibility note: As many C implementations push function arguments
12376 onto the stack in reverse order, the new library version is likely to
12377 interoperate with programs that have been compiled with the old
12378 pem_password_cb definition (PEM_whatever takes some data that
12379 happens to be on the stack as its last argument, and the callback
12380 just ignores this garbage); but there is no guarantee whatsoever that
12383 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
12384 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
12385 problems not only on Windows, but also on some Unix platforms.
12386 To avoid problematic command lines, these definitions are now in an
12387 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
12388 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
12391 *) MIPS III/IV assembler module is reimplemented.
12394 *) More DES library cleanups: remove references to srand/rand and
12395 delete an unused file.
12398 *) Add support for the free Netwide assembler (NASM) under Win32,
12399 since not many people have MASM (ml) and it can be hard to obtain.
12400 This is currently experimental but it seems to work OK and pass all
12401 the tests. Check out INSTALL.W32 for info.
12404 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
12405 without temporary keys kept an extra copy of the server key,
12406 and connections with temporary keys did not free everything in case
12410 *) New function RSA_check_key and new openssl rsa option -check
12411 for verifying the consistency of RSA keys.
12412 [Ulf Moeller, Bodo Moeller]
12414 *) Various changes to make Win32 compile work:
12415 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
12416 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
12417 comparison" warnings.
12418 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
12421 *) Add a debugging option to PKCS#5 v2 key generation function: when
12422 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
12423 derived keys are printed to stderr.
12426 *) Copy the flags in ASN1_STRING_dup().
12427 [Roman E. Pavlov <pre@mo.msk.ru>]
12429 *) The x509 application mishandled signing requests containing DSA
12430 keys when the signing key was also DSA and the parameters didn't match.
12432 It was supposed to omit the parameters when they matched the signing key:
12433 the verifying software was then supposed to automatically use the CA's
12434 parameters if they were absent from the end user certificate.
12436 Omitting parameters is no longer recommended. The test was also
12437 the wrong way round! This was probably due to unusual behaviour in
12438 EVP_cmp_parameters() which returns 1 if the parameters match.
12439 This meant that parameters were omitted when they *didn't* match and
12440 the certificate was useless. Certificates signed with 'ca' didn't have
12442 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
12444 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
12445 The interface is as follows:
12446 Applications can use
12447 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
12448 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
12449 "off" is now the default.
12450 The library internally uses
12451 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
12452 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
12453 to disable memory-checking temporarily.
12455 Some inconsistent states that previously were possible (and were
12456 even the default) are now avoided.
12458 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
12459 with each memory chunk allocated; this is occasionally more helpful
12460 than just having a counter.
12462 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
12464 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
12468 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
12469 which largely parallels "options", but is for changing API behaviour,
12470 whereas "options" are about protocol behaviour.
12471 Initial "mode" flags are:
12473 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
12474 a single record has been written.
12475 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
12476 retries use the same buffer location.
12477 (But all of the contents must be
12481 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
12484 *) Fix problems with no-hmac etc.
12485 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
12487 *) New functions RSA_get_default_method(), RSA_set_method() and
12488 RSA_get_method(). These allows replacement of RSA_METHODs without having
12489 to mess around with the internals of an RSA structure.
12492 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
12493 Also really enable memory leak checks in openssl.c and in some
12495 [Chad C. Mulligan, Bodo Moeller]
12497 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
12498 up the length of negative integers. This has now been simplified to just
12499 store the length when it is first determined and use it later, rather
12500 than trying to keep track of where data is copied and updating it to
12502 [Steve Henson, reported by Brien Wheeler
12503 <bwheeler@authentica-security.com>]
12505 *) Add a new function PKCS7_signatureVerify. This allows the verification
12506 of a PKCS#7 signature but with the signing certificate passed to the
12507 function itself. This contrasts with PKCS7_dataVerify which assumes the
12508 certificate is present in the PKCS#7 structure. This isn't always the
12509 case: certificates can be omitted from a PKCS#7 structure and be
12510 distributed by "out of band" means (such as a certificate database).
12513 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
12514 function prototypes in pem.h, also change util/mkdef.pl to add the
12515 necessary function names.
12518 *) mk1mf.pl (used by Windows builds) did not properly read the
12519 options set by Configure in the top level Makefile, and Configure
12520 was not even able to write more than one option correctly.
12521 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
12524 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
12525 file to be loaded from a BIO or FILE pointer. The BIO version will
12526 for example allow memory BIOs to contain config info.
12529 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
12530 Whoever hopes to achieve shared-library compatibility across versions
12531 must use this, not the compile-time macro.
12532 (Exercise 0.9.4: Which is the minimum library version required by
12534 Note: All this applies only to multi-threaded programs, others don't
12538 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
12539 through a BIO pair triggered the default case, i.e.
12540 SSLerr(...,SSL_R_UNKNOWN_STATE).
12543 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
12544 can use the SSL library even if none of the specific BIOs is
12548 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
12549 for the encoded length.
12550 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
12552 *) Add initial documentation of the X509V3 functions.
12555 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
12556 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
12557 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
12558 secure PKCS#8 private key format with a high iteration count.
12561 *) Fix determination of Perl interpreter: A perl or perl5
12562 _directory_ in $PATH was also accepted as the interpreter.
12563 [Ralf S. Engelschall]
12565 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
12566 wrong with it but it was very old and did things like calling
12567 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
12568 unusual formatting.
12571 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
12572 to use the new extension code.
12575 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
12576 with macros. This should make it easier to change their form, add extra
12577 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
12581 *) Add to configuration table a new entry that can specify an alternative
12582 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
12583 according to Mark Crispin <MRC@Panda.COM>.
12587 *) DES CBC did not update the IV. Weird.
12590 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
12591 Changing the behaviour of the former might break existing programs --
12592 where IV updating is needed, des_ncbc_encrypt can be used.
12595 *) When bntest is run from "make test" it drives bc to check its
12596 calculations, as well as internally checking them. If an internal check
12597 fails, it needs to cause bc to give a non-zero result or make test carries
12598 on without noticing the failure. Fixed.
12601 *) DES library cleanups.
12604 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
12605 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
12606 ciphers. NOTE: although the key derivation function has been verified
12607 against some published test vectors it has not been extensively tested
12608 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
12612 *) Instead of "mkdir -p", which is not fully portable, use new
12613 Perl script "util/mkdir-p.pl".
12616 *) Rewrite the way password based encryption (PBE) is handled. It used to
12617 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
12618 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
12619 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
12620 the 'parameter' field of the AlgorithmIdentifier is passed to the
12621 underlying key generation function so it must do its own ASN1 parsing.
12622 This has also changed the EVP_PBE_CipherInit() function which now has a
12623 'parameter' argument instead of literal salt and iteration count values
12624 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
12627 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
12628 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
12629 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
12630 KEY" because this clashed with PKCS#8 unencrypted string. Since this
12631 value was just used as a "magic string" and not used directly its
12632 value doesn't matter.
12635 *) Introduce some semblance of const correctness to BN. Shame C doesn't
12639 *) "linux-sparc64" configuration (ultrapenguin).
12640 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
12641 "linux-sparc" configuration.
12642 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
12644 *) config now generates no-xxx options for missing ciphers.
12647 *) Support the EBCDIC character set (work in progress).
12648 File ebcdic.c not yet included because it has a different license.
12649 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12651 *) Support BS2000/OSD-POSIX.
12652 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12654 *) Make callbacks for key generation use void * instead of char *.
12657 *) Make S/MIME samples compile (not yet tested).
12660 *) Additional typesafe stacks.
12663 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
12667 Changes between 0.9.3 and 0.9.3a [29 May 1999]
12669 *) New configuration variant "sco5-gcc".
12671 *) Updated some demos.
12672 [Sean O Riordain, Wade Scholine]
12674 *) Add missing BIO_free at exit of pkcs12 application.
12677 *) Fix memory leak in conf.c.
12680 *) Updates for Win32 to assembler version of MD5.
12683 *) Set #! path to perl in apps/der_chop to where we found it
12684 instead of using a fixed path.
12687 *) SHA library changes for irix64-mips4-cc.
12690 *) Improvements for VMS support.
12694 Changes between 0.9.2b and 0.9.3 [24 May 1999]
12696 *) Bignum library bug fix. IRIX 6 passes "make test" now!
12697 This also avoids the problems with SC4.2 and unpatched SC5.
12698 [Andy Polyakov <appro@fy.chalmers.se>]
12700 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
12701 These are required because of the typesafe stack would otherwise break
12702 existing code. If old code used a structure member which used to be STACK
12703 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
12704 sk_num or sk_value it would produce an error because the num, data members
12705 are not present in STACK_OF. Now it just produces a warning. sk_set
12706 replaces the old method of assigning a value to sk_value
12707 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
12708 that does this will no longer work (and should use sk_set instead) but
12709 this could be regarded as a "questionable" behaviour anyway.
12712 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
12713 correctly handle encrypted S/MIME data.
12716 *) Change type of various DES function arguments from des_cblock
12717 (which means, in function argument declarations, pointer to char)
12718 to des_cblock * (meaning pointer to array with 8 char elements),
12719 which allows the compiler to do more typechecking; it was like
12720 that back in SSLeay, but with lots of ugly casts.
12722 Introduce new type const_des_cblock.
12725 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
12726 problems: find RecipientInfo structure that matches recipient certificate
12727 and initialise the ASN1 structures properly based on passed cipher.
12730 *) Belatedly make the BN tests actually check the results.
12733 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
12734 to and from BNs: it was completely broken. New compilation option
12735 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
12736 key elements as negative integers.
12739 *) Reorganize and speed up MD5.
12740 [Andy Polyakov <appro@fy.chalmers.se>]
12743 [Richard Levitte <richard@levitte.org>]
12745 *) New option -out to asn1parse to allow the parsed structure to be
12746 output to a file. This is most useful when combined with the -strparse
12747 option to examine the output of things like OCTET STRINGS.
12750 *) Make SSL library a little more fool-proof by not requiring any longer
12751 that SSL_set_{accept,connect}_state be called before
12752 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
12753 in many applications because usually everything *appeared* to work as
12754 intended anyway -- now it really works as intended).
12757 *) Move openssl.cnf out of lib/.
12760 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
12761 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
12762 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
12763 [Ralf S. Engelschall]
12765 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
12766 handle PKCS#7 enveloped data properly.
12767 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
12769 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
12770 copying pointers. The cert_st handling is changed by this in
12771 various ways (and thus what used to be known as ctx->default_cert
12772 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
12773 any longer when s->cert does not give us what we need).
12774 ssl_cert_instantiate becomes obsolete by this change.
12775 As soon as we've got the new code right (possibly it already is?),
12776 we have solved a couple of bugs of the earlier code where s->cert
12777 was used as if it could not have been shared with other SSL structures.
12779 Note that using the SSL API in certain dirty ways now will result
12780 in different behaviour than observed with earlier library versions:
12781 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
12782 does not influence s as it used to.
12784 In order to clean up things more thoroughly, inside SSL_SESSION
12785 we don't use CERT any longer, but a new structure SESS_CERT
12786 that holds per-session data (if available); currently, this is
12787 the peer's certificate chain and, for clients, the server's certificate
12788 and temporary key. CERT holds only those values that can have
12789 meaningful defaults in an SSL_CTX.
12792 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
12793 from the internal representation. Various PKCS#7 fixes: remove some
12794 evil casts and set the enc_dig_alg field properly based on the signing
12798 *) Allow PKCS#12 password to be set from the command line or the
12799 environment. Let 'ca' get its config file name from the environment
12800 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
12804 *) Allow certificate policies extension to use an IA5STRING for the
12805 organization field. This is contrary to the PKIX definition but
12806 VeriSign uses it and IE5 only recognises this form. Document 'x509'
12810 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
12811 without disallowing inline assembler and the like for non-pedantic builds.
12814 *) Support Borland C++ builder.
12815 [Janez Jere <jj@void.si>, modified by Ulf Möller]
12817 *) Support Mingw32.
12820 *) SHA-1 cleanups and performance enhancements.
12821 [Andy Polyakov <appro@fy.chalmers.se>]
12823 *) Sparc v8plus assembler for the bignum library.
12824 [Andy Polyakov <appro@fy.chalmers.se>]
12826 *) Accept any -xxx and +xxx compiler options in Configure.
12829 *) Update HPUX configuration.
12832 *) Add missing sk_<type>_unshift() function to safestack.h
12833 [Ralf S. Engelschall]
12835 *) New function SSL_CTX_use_certificate_chain_file that sets the
12836 "extra_cert"s in addition to the certificate. (This makes sense
12837 only for "PEM" format files, as chains as a whole are not
12841 *) Support verify_depth from the SSL API.
12842 x509_vfy.c had what can be considered an off-by-one-error:
12843 Its depth (which was not part of the external interface)
12844 was actually counting the number of certificates in a chain;
12845 now it really counts the depth.
12848 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
12849 instead of X509err, which often resulted in confusing error
12850 messages since the error codes are not globally unique
12851 (e.g. an alleged error in ssl3_accept when a certificate
12852 didn't match the private key).
12854 *) New function SSL_CTX_set_session_id_context that allows to set a default
12855 value (so that you don't need SSL_set_session_id_context for each
12856 connection using the SSL_CTX).
12859 *) OAEP decoding bug fix.
12862 *) Support INSTALL_PREFIX for package builders, as proposed by
12866 *) New Configure options "threads" and "no-threads". For systems
12867 where the proper compiler options are known (currently Solaris
12868 and Linux), "threads" is the default.
12871 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
12874 *) Install various scripts to $(OPENSSLDIR)/misc, not to
12875 $(INSTALLTOP)/bin -- they shouldn't clutter directories
12876 such as /usr/local/bin.
12879 *) "make linux-shared" to build shared libraries.
12880 [Niels Poppe <niels@netbox.org>]
12882 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
12885 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
12886 extension adding in x509 utility.
12889 *) Remove NOPROTO sections and error code comments.
12892 *) Partial rewrite of the DEF file generator to now parse the ANSI
12896 *) New Configure options --prefix=DIR and --openssldir=DIR.
12899 *) Complete rewrite of the error code script(s). It is all now handled
12900 by one script at the top level which handles error code gathering,
12901 header rewriting and C source file generation. It should be much better
12902 than the old method: it now uses a modified version of Ulf's parser to
12903 read the ANSI prototypes in all header files (thus the old K&R definitions
12904 aren't needed for error creation any more) and do a better job of
12905 translating function codes into names. The old 'ASN1 error code embedded
12906 in a comment' is no longer necessary and it doesn't use .err files which
12907 have now been deleted. Also the error code call doesn't have to appear all
12908 on one line (which resulted in some large lines...).
12911 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
12914 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
12915 0 (which usually indicates a closed connection), but continue reading.
12918 *) Fix some race conditions.
12921 *) Add support for CRL distribution points extension. Add Certificate
12922 Policies and CRL distribution points documentation.
12925 *) Move the autogenerated header file parts to crypto/opensslconf.h.
12928 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
12929 8 of keying material. Merlin has also confirmed interop with this fix
12930 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
12931 [Merlin Hughes <merlin@baltimore.ie>]
12933 *) Fix lots of warnings.
12934 [Richard Levitte <levitte@stacken.kth.se>]
12936 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
12937 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
12938 [Richard Levitte <levitte@stacken.kth.se>]
12940 *) Fix problems with sizeof(long) == 8.
12941 [Andy Polyakov <appro@fy.chalmers.se>]
12943 *) Change functions to ANSI C.
12946 *) Fix typos in error codes.
12947 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
12949 *) Remove defunct assembler files from Configure.
12952 *) SPARC v8 assembler BIGNUM implementation.
12953 [Andy Polyakov <appro@fy.chalmers.se>]
12955 *) Support for Certificate Policies extension: both print and set.
12956 Various additions to support the r2i method this uses.
12959 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
12960 return a const string when you are expecting an allocated buffer.
12963 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
12964 types DirectoryString and DisplayText.
12967 *) Add code to allow r2i extensions to access the configuration database,
12968 add an LHASH database driver and add several ctx helper functions.
12971 *) Fix an evil bug in bn_expand2() which caused various BN functions to
12972 fail when they extended the size of a BIGNUM.
12975 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
12976 support typesafe stack.
12979 *) Fix typo in SSL_[gs]et_options().
12980 [Nils Frostberg <nils@medcom.se>]
12982 *) Delete various functions and files that belonged to the (now obsolete)
12983 old X509V3 handling code.
12986 *) New Configure option "rsaref".
12989 *) Don't auto-generate pem.h.
12992 *) Introduce type-safe ASN.1 SETs.
12995 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
12996 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
12998 *) Introduce type-safe STACKs. This will almost certainly break lots of code
12999 that links with OpenSSL (well at least cause lots of warnings), but fear
13000 not: the conversion is trivial, and it eliminates loads of evil casts. A
13001 few STACKed things have been converted already. Feel free to convert more.
13002 In the fullness of time, I'll do away with the STACK type altogether.
13005 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
13006 specified in <certfile> by updating the entry in the index.txt file.
13007 This way one no longer has to edit the index.txt file manually for
13008 revoking a certificate. The -revoke option does the gory details now.
13009 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
13011 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
13012 `-text' option at all and this way the `-noout -text' combination was
13013 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
13014 [Ralf S. Engelschall]
13016 *) Make sure a corresponding plain text error message exists for the
13017 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
13018 verify callback function determined that a certificate was revoked.
13019 [Ralf S. Engelschall]
13021 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
13022 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
13023 all available ciphers including rc5, which was forgotten until now.
13024 In order to let the testing shell script know which algorithms
13025 are available, a new (up to now undocumented) command
13026 "openssl list-cipher-commands" is used.
13029 *) Bugfix: s_client occasionally would sleep in select() when
13030 it should have checked SSL_pending() first.
13033 *) New functions DSA_do_sign and DSA_do_verify to provide access to
13034 the raw DSA values prior to ASN.1 encoding.
13037 *) Tweaks to Configure
13038 [Niels Poppe <niels@netbox.org>]
13040 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
13044 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
13047 *) New config option to avoid instructions that are illegal on the 80386.
13048 The default code is faster, but requires at least a 486.
13051 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
13052 SSL2_SERVER_VERSION (not used at all) macros, which are now the
13053 same as SSL2_VERSION anyway.
13056 *) New "-showcerts" option for s_client.
13059 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
13060 application. Various cleanups and fixes.
13063 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
13064 modify error routines to work internally. Add error codes and PBE init
13065 to library startup routines.
13068 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
13069 packing functions to asn1 and evp. Changed function names and error
13070 codes along the way.
13073 *) PKCS12 integration: and so it begins... First of several patches to
13074 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
13075 objects to objects.h
13078 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
13079 and display support for Thawte strong extranet extension.
13082 *) Add LinuxPPC support.
13083 [Jeff Dubrule <igor@pobox.org>]
13085 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
13086 bn_div_words in alpha.s.
13087 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
13089 *) Make sure the RSA OAEP test is skipped under -DRSAref because
13090 OAEP isn't supported when OpenSSL is built with RSAref.
13091 [Ulf Moeller <ulf@fitug.de>]
13093 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
13094 so they no longer are missing under -DNOPROTO.
13095 [Soren S. Jorvang <soren@t.dk>]
13098 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
13100 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
13101 doesn't work when the session is reused. Coming soon!
13104 *) Fix a security hole, that allows sessions to be reused in the wrong
13105 context thus bypassing client cert protection! All software that uses
13106 client certs and session caches in multiple contexts NEEDS PATCHING to
13107 allow session reuse! A fuller solution is in the works.
13108 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
13110 *) Some more source tree cleanups (removed obsolete files
13111 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
13112 permission on "config" script to be executable) and a fix for the INSTALL
13114 [Ulf Moeller <ulf@fitug.de>]
13116 *) Remove some legacy and erroneous uses of malloc, free instead of
13118 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
13120 *) Make rsa_oaep_test return non-zero on error.
13121 [Ulf Moeller <ulf@fitug.de>]
13123 *) Add support for native Solaris shared libraries. Configure
13124 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
13125 if someone would make that last step automatic.
13126 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
13128 *) ctx_size was not built with the right compiler during "make links". Fixed.
13131 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
13132 except NULL ciphers". This means the default cipher list will no longer
13133 enable NULL ciphers. They need to be specifically enabled e.g. with
13134 the string "DEFAULT:eNULL".
13137 *) Fix to RSA private encryption routines: if p < q then it would
13138 occasionally produce an invalid result. This will only happen with
13139 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
13142 *) Be less restrictive and allow also `perl util/perlpath.pl
13143 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
13144 because this way one can also use an interpreter named `perl5' (which is
13145 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
13146 installed as `perl').
13147 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
13149 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
13150 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
13152 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
13153 advapi32.lib to Win32 build and change the pem test comparison
13154 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
13155 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
13156 and crypto/des/ede_cbcm_enc.c.
13159 *) DES quad checksum was broken on big-endian architectures. Fixed.
13162 *) Comment out two functions in bio.h that aren't implemented. Fix up the
13163 Win32 test batch file so it (might) work again. The Win32 test batch file
13164 is horrible: I feel ill....
13167 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
13168 in e_os.h. Audit of header files to check ANSI and non ANSI
13169 sections: 10 functions were absent from non ANSI section and not exported
13170 from Windows DLLs. Fixed up libeay.num for new functions.
13173 *) Make `openssl version' output lines consistent.
13174 [Ralf S. Engelschall]
13176 *) Fix Win32 symbol export lists for BIO functions: Added
13177 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
13178 to ms/libeay{16,32}.def.
13179 [Ralf S. Engelschall]
13181 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
13182 fine under Unix and passes some trivial tests I've now added. But the
13183 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
13184 added to make sure no one expects that this stuff really works in the
13185 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
13186 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
13188 [Ralf S. Engelschall]
13190 *) Fix the generation of two part addresses in perl.
13191 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
13193 *) Add config entry for Linux on MIPS.
13194 [John Tobey <jtobey@channel1.com>]
13196 *) Make links whenever Configure is run, unless we are on Windoze.
13199 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
13200 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
13204 *) Add a useful kludge to allow package maintainers to specify compiler and
13205 other platforms details on the command line without having to patch the
13206 Configure script every time: One now can use ``perl Configure
13207 <id>:<details>'', i.e. platform ids are allowed to have details appended
13208 to them (separated by colons). This is treated as there would be a static
13209 pre-configured entry in Configure's %table under key <id> with value
13210 <details> and ``perl Configure <id>'' is called. So, when you want to
13211 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
13212 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
13213 now, which overrides the FreeBSD-elf entry on-the-fly.
13214 [Ralf S. Engelschall]
13216 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
13219 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
13220 on the `perl Configure ...' command line. This way one can compile
13221 OpenSSL libraries with Position Independent Code (PIC) which is needed
13222 for linking it into DSOs.
13223 [Ralf S. Engelschall]
13225 *) Remarkably, export ciphers were totally broken and no-one had noticed!
13229 *) Cleaned up the LICENSE document: The official contact for any license
13230 questions now is the OpenSSL core team under openssl-core@openssl.org.
13231 And add a paragraph about the dual-license situation to make sure people
13232 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
13233 to the OpenSSL toolkit.
13234 [Ralf S. Engelschall]
13236 *) General source tree makefile cleanups: Made `making xxx in yyy...'
13237 display consistent in the source tree and replaced `/bin/rm' by `rm'.
13238 Additionally cleaned up the `make links' target: Remove unnecessary
13239 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
13240 to speed processing and no longer clutter the display with confusing
13241 stuff. Instead only the actually done links are displayed.
13242 [Ralf S. Engelschall]
13244 *) Permit null encryption ciphersuites, used for authentication only. It used
13245 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
13246 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
13250 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
13251 signed attributes when verifying signatures (this would break them),
13252 the detached data encoding was wrong and public keys obtained using
13253 X509_get_pubkey() weren't freed.
13256 *) Add text documentation for the BUFFER functions. Also added a work around
13257 to a Win95 console bug. This was triggered by the password read stuff: the
13258 last character typed gets carried over to the next fread(). If you were
13259 generating a new cert request using 'req' for example then the last
13260 character of the passphrase would be CR which would then enter the first
13264 *) Added the new `Includes OpenSSL Cryptography Software' button as
13265 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
13266 button and can be used by applications based on OpenSSL to show the
13267 relationship to the OpenSSL project.
13268 [Ralf S. Engelschall]
13270 *) Remove confusing variables in function signatures in files
13271 ssl/ssl_lib.c and ssl/ssl.h.
13272 [Lennart Bong <lob@kulthea.stacken.kth.se>]
13274 *) Don't install bss_file.c under PREFIX/include/
13275 [Lennart Bong <lob@kulthea.stacken.kth.se>]
13277 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
13278 functions that return function pointers and has support for NT specific
13279 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
13280 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
13281 unsigned to signed types: this was killing the Win32 compile.
13284 *) Add new certificate file to stack functions,
13285 SSL_add_dir_cert_subjects_to_stack() and
13286 SSL_add_file_cert_subjects_to_stack(). These largely supplant
13287 SSL_load_client_CA_file(), and can be used to add multiple certs easily
13288 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
13289 This means that Apache-SSL and similar packages don't have to mess around
13290 to add as many CAs as they want to the preferred list.
13293 *) Experiment with doxygen documentation. Currently only partially applied to
13295 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
13296 openssl.doxy as the configuration file.
13299 *) Get rid of remaining C++-style comments which strict C compilers hate.
13300 [Ralf S. Engelschall, pointed out by Carlos Amengual]
13302 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
13303 compiled in by default: it has problems with large keys.
13306 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
13307 DH private keys and/or callback functions which directly correspond to
13308 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
13309 is needed for applications which have to configure certificates on a
13310 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
13312 For the RSA certificate situation is makes no difference, but
13313 for the DSA certificate situation this fixes the "no shared cipher"
13314 problem where the OpenSSL cipher selection procedure failed because the
13315 temporary keys were not overtaken from the context and the API provided
13316 no way to reconfigure them.
13317 The new functions now let applications reconfigure the stuff and they
13318 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
13319 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
13320 non-public-API function ssl_cert_instantiate() is used as a helper
13321 function and also to reduce code redundancy inside ssl_rsa.c.
13322 [Ralf S. Engelschall]
13324 *) Move s_server -dcert and -dkey options out of the undocumented feature
13325 area because they are useful for the DSA situation and should be
13326 recognized by the users.
13327 [Ralf S. Engelschall]
13329 *) Fix the cipher decision scheme for export ciphers: the export bits are
13330 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
13331 SSL_EXP_MASK. So, the original variable has to be used instead of the
13332 already masked variable.
13333 [Richard Levitte <levitte@stacken.kth.se>]
13335 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
13336 [Richard Levitte <levitte@stacken.kth.se>]
13338 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
13339 from `int' to `unsigned int' because it's a length and initialized by
13340 EVP_DigestFinal() which expects an `unsigned int *'.
13341 [Richard Levitte <levitte@stacken.kth.se>]
13343 *) Don't hard-code path to Perl interpreter on shebang line of Configure
13344 script. Instead use the usual Shell->Perl transition trick.
13345 [Ralf S. Engelschall]
13347 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
13348 (in addition to RSA certificates) to match the behaviour of `openssl dsa
13349 -noout -modulus' as it's already the case for `openssl rsa -noout
13350 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
13351 currently the public key is printed (a decision which was already done by
13352 `openssl dsa -modulus' in the past) which serves a similar purpose.
13353 Additionally the NO_RSA no longer completely removes the whole -modulus
13354 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
13356 [Ralf S. Engelschall]
13358 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
13359 BIO. See the source (crypto/evp/bio_ok.c) for more info.
13360 [Arne Ansper <arne@ats.cyber.ee>]
13362 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
13363 to be added. Now both 'req' and 'ca' can use new objects defined in the
13367 *) Add cool BIO that does syslog (or event log on NT).
13368 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
13370 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
13371 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
13372 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
13373 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
13376 *) Add preliminary config info for new extension code.
13379 *) Make RSA_NO_PADDING really use no padding.
13380 [Ulf Moeller <ulf@fitug.de>]
13382 *) Generate errors when private/public key check is done.
13385 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
13386 for some CRL extensions and new objects added.
13389 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
13390 key usage extension and fuller support for authority key id.
13393 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
13394 padding method for RSA, which is recommended for new applications in PKCS
13395 #1 v2.0 (RFC 2437, October 1998).
13396 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
13397 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
13398 against Bleichbacher's attack on RSA.
13399 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
13402 *) Updates to the new SSL compression code
13403 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13405 *) Fix so that the version number in the master secret, when passed
13406 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
13407 (because the server will not accept higher), that the version number
13408 is 0x03,0x01, not 0x03,0x00
13409 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13411 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
13412 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
13413 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
13416 *) Support for RAW extensions where an arbitrary extension can be
13417 created by including its DER encoding. See apps/openssl.cnf for
13421 *) Make sure latest Perl versions don't interpret some generated C array
13422 code as Perl array code in the crypto/err/err_genc.pl script.
13423 [Lars Weber <3weber@informatik.uni-hamburg.de>]
13425 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
13426 not many people have the assembler. Various Win32 compilation fixes and
13427 update to the INSTALL.W32 file with (hopefully) more accurate Win32
13428 build instructions.
13431 *) Modify configure script 'Configure' to automatically create crypto/date.h
13432 file under Win32 and also build pem.h from pem.org. New script
13433 util/mkfiles.pl to create the MINFO file on environments that can't do a
13434 'make files': perl util/mkfiles.pl >MINFO should work.
13437 *) Major rework of DES function declarations, in the pursuit of correctness
13438 and purity. As a result, many evil casts evaporated, and some weirdness,
13439 too. You may find this causes warnings in your code. Zapping your evil
13440 casts will probably fix them. Mostly.
13443 *) Fix for a typo in asn1.h. Bug fix to object creation script
13444 obj_dat.pl. It considered a zero in an object definition to mean
13445 "end of object": none of the objects in objects.h have any zeros
13446 so it wasn't spotted.
13447 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
13449 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
13450 Masking (CBCM). In the absence of test vectors, the best I have been able
13451 to do is check that the decrypt undoes the encrypt, so far. Send me test
13452 vectors if you have them.
13455 *) Correct calculation of key length for export ciphers (too much space was
13456 allocated for null ciphers). This has not been tested!
13459 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
13460 message is now correct (it understands "crypto" and "ssl" on its
13461 command line). There is also now an "update" option. This will update
13462 the util/ssleay.num and util/libeay.num files with any new functions.
13464 perl util/mkdef.pl crypto ssl update
13465 it will update them.
13468 *) Overhauled the Perl interface (perl/*):
13469 - ported BN stuff to OpenSSL's different BN library
13470 - made the perl/ source tree CVS-aware
13471 - renamed the package from SSLeay to OpenSSL (the files still contain
13472 their history because I've copied them in the repository)
13473 - removed obsolete files (the test scripts will be replaced
13474 by better Test::Harness variants in the future)
13475 [Ralf S. Engelschall]
13477 *) First cut for a very conservative source tree cleanup:
13478 1. merge various obsolete readme texts into doc/ssleay.txt
13479 where we collect the old documents and readme texts.
13480 2. remove the first part of files where I'm already sure that we no
13481 longer need them because of three reasons: either they are just temporary
13482 files which were left by Eric or they are preserved original files where
13483 I've verified that the diff is also available in the CVS via "cvs diff
13484 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
13485 the crypto/md/ stuff).
13486 [Ralf S. Engelschall]
13488 *) More extension code. Incomplete support for subject and issuer alt
13489 name, issuer and authority key id. Change the i2v function parameters
13490 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
13491 what that's for :-) Fix to ASN1 macro which messed up
13492 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
13495 *) Preliminary support for ENUMERATED type. This is largely copied from the
13499 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
13500 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13502 *) Make sure `make rehash' target really finds the `openssl' program.
13503 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
13505 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
13506 like to hear about it if this slows down other processors.
13509 *) Add CygWin32 platform information to Configure script.
13510 [Alan Batie <batie@aahz.jf.intel.com>]
13512 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
13513 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
13515 *) New program nseq to manipulate netscape certificate sequences
13518 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
13522 *) Fixes to BN code. Previously the default was to define BN_RECURSION
13523 but the BN code had some problems that would cause failures when
13524 doing certificate verification and some other functions.
13525 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13527 *) Add ASN1 and PEM code to support netscape certificate sequences.
13530 *) Add ASN1 and PEM code to support netscape certificate sequences.
13533 *) Add several PKIX and private extended key usage OIDs.
13536 *) Modify the 'ca' program to handle the new extension code. Modify
13537 openssl.cnf for new extension format, add comments.
13540 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
13541 and add a sample to openssl.cnf so req -x509 now adds appropriate
13545 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
13546 error code, add initial support to X509_print() and x509 application.
13549 *) Takes a deep breath and start adding X509 V3 extension support code. Add
13550 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
13551 stuff is currently isolated and isn't even compiled yet.
13554 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
13555 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
13556 Removed the versions check from X509 routines when loading extensions:
13557 this allows certain broken certificates that don't set the version
13558 properly to be processed.
13561 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
13562 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
13563 can still be regenerated with "make depend".
13566 *) Spelling mistake in C version of CAST-128.
13567 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
13569 *) Changes to the error generation code. The perl script err-code.pl
13570 now reads in the old error codes and retains the old numbers, only
13571 adding new ones if necessary. It also only changes the .err files if new
13572 codes are added. The makefiles have been modified to only insert errors
13573 when needed (to avoid needlessly modifying header files). This is done
13574 by only inserting errors if the .err file is newer than the auto generated
13575 C file. To rebuild all the error codes from scratch (the old behaviour)
13576 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
13577 or delete all the .err files.
13580 *) CAST-128 was incorrectly implemented for short keys. The C version has
13581 been fixed, but is untested. The assembler versions are also fixed, but
13582 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
13583 to regenerate it if needed.
13584 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
13585 Hagino <itojun@kame.net>]
13587 *) File was opened incorrectly in randfile.c.
13588 [Ulf Möller <ulf@fitug.de>]
13590 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
13591 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
13592 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
13593 al: it's just almost always a UTCTime. Note this patch adds new error
13594 codes so do a "make errors" if there are problems.
13597 *) Correct Linux 1 recognition in config.
13598 [Ulf Möller <ulf@fitug.de>]
13600 *) Remove pointless MD5 hash when using DSA keys in ca.
13601 [Anonymous <nobody@replay.com>]
13603 *) Generate an error if given an empty string as a cert directory. Also
13604 generate an error if handed NULL (previously returned 0 to indicate an
13605 error, but didn't set one).
13606 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
13608 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
13611 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
13612 parameters. This was causing a warning which killed off the Win32 compile.
13615 *) Remove C++ style comments from crypto/bn/bn_local.h.
13616 [Neil Costigan <neil.costigan@celocom.com>]
13618 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
13619 based on a text string, looking up short and long names and finally
13620 "dot" format. The "dot" format stuff didn't work. Added new function
13621 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
13622 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
13623 OID is not part of the table.
13626 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
13627 X509_LOOKUP_by_alias().
13630 *) Sort openssl functions by name.
13633 *) Get the gendsa program working (hopefully) and add it to app list. Remove
13634 encryption from sample DSA keys (in case anyone is interested the password
13638 *) Make _all_ *_free functions accept a NULL pointer.
13639 [Frans Heymans <fheymans@isaserver.be>]
13641 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
13643 [Anonymous <nobody@replay.com>]
13645 *) s_server should send the CAfile as acceptable CAs, not its own cert.
13646 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13648 *) Don't blow it for numeric -newkey arguments to apps/req.
13649 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13651 *) Temp key "for export" tests were wrong in s3_srvr.c.
13652 [Anonymous <nobody@replay.com>]
13654 *) Add prototype for temp key callback functions
13655 SSL_CTX_set_tmp_{rsa,dh}_callback().
13658 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
13659 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
13662 *) X509_name_add_entry() freed the wrong thing after an error.
13663 [Arne Ansper <arne@ats.cyber.ee>]
13665 *) rsa_eay.c would attempt to free a NULL context.
13666 [Arne Ansper <arne@ats.cyber.ee>]
13668 *) BIO_s_socket() had a broken should_retry() on Windoze.
13669 [Arne Ansper <arne@ats.cyber.ee>]
13671 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
13672 [Arne Ansper <arne@ats.cyber.ee>]
13674 *) Make sure the already existing X509_STORE->depth variable is initialized
13675 in X509_STORE_new(), but document the fact that this variable is still
13676 unused in the certificate verification process.
13677 [Ralf S. Engelschall]
13679 *) Fix the various library and apps files to free up pkeys obtained from
13680 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
13683 *) Fix reference counting in X509_PUBKEY_get(). This makes
13684 demos/maurice/example2.c work, amongst others, probably.
13685 [Steve Henson and Ben Laurie]
13687 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
13688 `openssl' and second, the shortcut symlinks for the `openssl <command>'
13689 are no longer created. This way we have a single and consistent command
13690 line interface `openssl <command>', similar to `cvs <command>'.
13691 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
13693 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
13694 BIT STRING wrapper always have zero unused bits.
13697 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
13700 *) Make the top-level INSTALL documentation easier to understand.
13703 *) Makefiles updated to exit if an error occurs in a sub-directory
13704 make (including if user presses ^C) [Paul Sutton]
13706 *) Make Montgomery context stuff explicit in RSA data structure.
13709 *) Fix build order of pem and err to allow for generated pem.h.
13712 *) Fix renumbering bug in X509_NAME_delete_entry().
13715 *) Enhanced the err-ins.pl script so it makes the error library number
13716 global and can add a library name. This is needed for external ASN1 and
13717 other error libraries.
13720 *) Fixed sk_insert which never worked properly.
13723 *) Fix ASN1 macros so they can handle indefinite length constructed
13724 EXPLICIT tags. Some non standard certificates use these: they can now
13728 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
13729 into a single doc/ssleay.txt bundle. This way the information is still
13730 preserved but no longer messes up this directory. Now it's new room for
13731 the new set of documentation files.
13732 [Ralf S. Engelschall]
13734 *) SETs were incorrectly DER encoded. This was a major pain, because they
13735 shared code with SEQUENCEs, which aren't coded the same. This means that
13736 almost everything to do with SETs or SEQUENCEs has either changed name or
13737 number of arguments.
13738 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
13740 *) Fix test data to work with the above.
13743 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
13744 was already fixed by Eric for 0.9.1 it seems.
13745 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
13747 *) Autodetect FreeBSD3.
13750 *) Fix various bugs in Configure. This affects the following platforms:
13754 unixware-2.0-pentium
13758 *) Eliminate generated files from CVS. Reorder tests to regenerate files
13759 before they are needed.
13762 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
13766 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
13768 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
13769 changed SSLeay to OpenSSL in version strings.
13770 [Ralf S. Engelschall]
13772 *) Some fixups to the top-level documents.
13775 *) Fixed the nasty bug where rsaref.h was not found under compile-time
13776 because the symlink to include/ was missing.
13777 [Ralf S. Engelschall]
13779 *) Incorporated the popular no-RSA/DSA-only patches
13780 which allow to compile a RSA-free SSLeay.
13781 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
13783 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
13784 when "ssleay" is still not found.
13785 [Ralf S. Engelschall]
13787 *) Added more platforms to Configure: Cray T3E, HPUX 11,
13788 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
13790 *) Updated the README file.
13791 [Ralf S. Engelschall]
13793 *) Added various .cvsignore files in the CVS repository subdirs
13794 to make a "cvs update" really silent.
13795 [Ralf S. Engelschall]
13797 *) Recompiled the error-definition header files and added
13798 missing symbols to the Win32 linker tables.
13799 [Ralf S. Engelschall]
13801 *) Cleaned up the top-level documents;
13802 o new files: CHANGES and LICENSE
13803 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
13804 o merged COPYRIGHT into LICENSE
13805 o removed obsolete TODO file
13806 o renamed MICROSOFT to INSTALL.W32
13807 [Ralf S. Engelschall]
13809 *) Removed dummy files from the 0.9.1b source tree:
13810 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
13811 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
13812 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
13813 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
13814 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
13815 [Ralf S. Engelschall]
13817 *) Added various platform portability fixes.
13820 *) The Genesis of the OpenSSL rpject:
13821 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
13822 Young and Tim J. Hudson created while they were working for C2Net until
13824 [The OpenSSL Project]
13827 Changes between 0.9.0b and 0.9.1b [not released]
13829 *) Updated a few CA certificates under certs/
13832 *) Changed some BIGNUM api stuff.
13835 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
13836 DGUX x86, Linux Alpha, etc.
13839 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
13840 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
13844 *) Add -strparse option to asn1pars program which parses nested
13846 [Dr Stephen Henson <shenson@bigfoot.com>]
13848 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
13851 *) DSA fix for "ca" program.
13854 *) Added "-genkey" option to "dsaparam" program.
13857 *) Added RIPE MD160 (rmd160) message digest.
13860 *) Added -a (all) option to "ssleay version" command.
13863 *) Added PLATFORM define which is the id given to Configure.
13866 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
13869 *) Extended the ASN.1 parser routines.
13872 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
13875 *) Added a BN_CTX to the BN library.
13878 *) Fixed the weak key values in DES library
13881 *) Changed API in EVP library for cipher aliases.
13884 *) Added support for RC2/64bit cipher.
13887 *) Converted the lhash library to the crypto/mem.c functions.
13890 *) Added more recognized ASN.1 object ids.
13893 *) Added more RSA padding checks for SSL/TLS.
13896 *) Added BIO proxy/filter functionality.
13899 *) Added extra_certs to SSL_CTX which can be used
13900 send extra CA certificates to the client in the CA cert chain sending
13901 process. It can be configured with SSL_CTX_add_extra_chain_cert().
13904 *) Now Fortezza is denied in the authentication phase because
13905 this is key exchange mechanism is not supported by SSLeay at all.
13908 *) Additional PKCS1 checks.
13911 *) Support the string "TLSv1" for all TLS v1 ciphers.
13914 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
13915 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
13918 *) Fixed a few memory leaks.
13921 *) Fixed various code and comment typos.
13924 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
13925 bytes sent in the client random.
13926 [Edward Bishop <ebishop@spyglass.com>]