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 *) Deprecated EVP_PKEY_decrypt_old(), please use EVP_PKEY_decrypt_init()
13 and EVP_PKEY_decrypt() instead.
14 Deprecated EVP_PKEY_encrypt_old(), please use EVP_PKEY_encrypt_init()
15 and EVP_PKEY_encrypt() instead.
18 *) Enhanced the documentation of EVP_PKEY_size(), EVP_PKEY_bits()
19 and EVP_PKEY_security_bits(). Especially EVP_PKEY_size() needed
20 a new formulation to include all the things it can be used for,
21 as well as words of caution.
24 *) All of the low level CMAC functions have been deprecated including:
25 CMAC_CTX_new, CMAC_CTX_cleanup, CMAC_CTX_free, CMAC_CTX_get0_cipher_ctx,
26 CMAC_CTX_copy, CMAC_Init, CMAC_Update, CMAC_Final and CMAC_resume.
27 Use of these low level functions has been informally discouraged for a long
28 time. Instead applications should use L<EVP_MAC_CTX_new(3)>,
29 L<EVP_MAC_CTX_free(3)>, L<EVP_MAC_init(3)>, L<EVP_MAC_update(3)>
30 and L<EVP_MAC_final(3)>.
33 *) All of the low level MD2, MD4, MD5, MDC2, RIPEMD160, SHA1, SHA224, SHA256,
34 SHA384, SHA512 and Whirlpool digest functions have been deprecated.
36 MD2, MD2_options, MD2_Init, MD2_Update, MD2_Final, MD4, MD4_Init,
37 MD4_Update, MD4_Final, MD4_Transform, MD5, MD5_Init, MD5_Update,
38 MD5_Final, MD5_Transform, MDC2, MDC2_Init, MDC2_Update, MDC2_Final,
39 RIPEMD160, RIPEMD160_Init, RIPEMD160_Update, RIPEMD160_Final,
40 RIPEMD160_Transform, SHA1_Init, SHA1_Update, SHA1_Final,
41 SHA1_Transform, SHA224_Init, SHA224_Update, SHA224_Final,
42 SHA224_Transform, SHA256_Init, SHA256_Update, SHA256_Final,
43 SHA256_Transform, SHA384, SHA384_Init, SHA384_Update, SHA384_Final,
44 SHA512, SHA512_Init, SHA512_Update, SHA512_Final, SHA512_Transform,
45 WHIRLPOOL, WHIRLPOOL_Init, WHIRLPOOL_Update, WHIRLPOOL_BitUpdate
48 Use of these low level functions has been informally discouraged for a long
49 time. Instead applications should instead use the EVP_DigestInit_ex,
50 EVP_DigestUpdate(3) and EVP_DigestFinal_ex(3) functions.
53 *) Corrected the documentation of the return values from the EVP_DigestSign*
54 set of functions. The documentation mentioned negative values for some
55 errors, but this was never the case, so the mention of negative values
58 Code that followed the documentation and thereby check with something
59 like 'EVP_DigestSignInit(...) <= 0' will continue to work undisturbed.
62 *) All of the low level cipher functions have been deprecated including:
63 AES_options, AES_set_encrypt_key, AES_set_decrypt_key, AES_encrypt,
64 AES_decrypt, AES_ecb_encrypt, AES_cbc_encrypt, AES_cfb128_encrypt,
65 AES_cfb1_encrypt, AES_cfb8_encrypt, AES_ofb128_encrypt,
66 AES_wrap_key, AES_unwrap_key, BF_set_key, BF_encrypt, BF_decrypt,
67 BF_ecb_encrypt, BF_cbc_encrypt, BF_cfb64_encrypt, BF_ofb64_encrypt,
68 BF_options, Camellia_set_key, Camellia_encrypt, Camellia_decrypt,
69 Camellia_ecb_encrypt, Camellia_cbc_encrypt, Camellia_cfb128_encrypt,
70 Camellia_cfb1_encrypt, Camellia_cfb8_encrypt, Camellia_ofb128_encrypt,
71 Camellia_ctr128_encrypt, CAST_set_key, CAST_encrypt, CAST_decrypt,
72 CAST_ecb_encrypt, CAST_cbc_encrypt, CAST_cfb64_encrypt,
73 CAST_ofb64_encrypt, DES_options, DES_encrypt1, DES_encrypt2,
74 DES_encrypt3, DES_decrypt3, DES_cbc_encrypt, DES_ncbc_encrypt,
75 DES_pcbc_encrypt, DES_xcbc_encrypt, DES_cfb_encrypt, DES_cfb64_encrypt,
76 DES_ecb_encrypt, DES_ofb_encrypt, DES_ofb64_encrypt, DES_random_key,
77 DES_set_odd_parity, DES_check_key_parity, DES_is_weak_key, DES_set_key,
78 DES_key_sched, DES_set_key_checked, DES_set_key_unchecked,
79 DES_string_to_key, DES_string_to_2keys, DES_fixup_key_parity,
80 DES_ecb2_encrypt, DES_ede2_cbc_encrypt, DES_ede2_cfb64_encrypt,
81 DES_ede2_ofb64_encrypt, DES_ecb3_encrypt, DES_ede3_cbc_encrypt,
82 DES_ede3_cfb64_encrypt, DES_ede3_cfb_encrypt, DES_ede3_ofb64_encrypt,
83 DES_cbc_cksum, DES_quad_cksum, IDEA_encrypt, IDEA_options,
84 IDEA_ecb_encrypt, IDEA_set_encrypt_key, IDEA_set_decrypt_key,
85 IDEA_cbc_encrypt, IDEA_cfb64_encrypt, IDEA_ofb64_encrypt, RC2_set_key,
86 RC2_encrypt, RC2_decrypt, RC2_ecb_encrypt, RC2_cbc_encrypt,
87 RC2_cfb64_encrypt, RC2_ofb64_encrypt, RC4, RC4_options, RC4_set_key,
88 RC5_32_set_key, RC5_32_encrypt, RC5_32_decrypt, RC5_32_ecb_encrypt,
89 RC5_32_cbc_encrypt, RC5_32_cfb64_encrypt, RC5_32_ofb64_encrypt,
90 SEED_set_key, SEED_encrypt, SEED_decrypt, SEED_ecb_encrypt,
91 SEED_cbc_encrypt, SEED_cfb128_encrypt and SEED_ofb128_encrypt.
93 Use of these low level functions has been informally discouraged for a long
94 time. Instead applications should use the high level EVP APIs, e.g.
95 EVP_EncryptInit_ex, EVP_EncryptUpdate, EVP_EncryptFinal_ex, and the
96 equivalently named decrypt functions.
97 [Matt Caswell and Paul Dale]
99 *) Removed include/openssl/opensslconf.h.in and replaced it with
100 include/openssl/configuration.h.in, which differs in not including
101 <openssl/macros.h>. A short header include/openssl/opensslconf.h
102 was added to include both.
104 This allows internal hacks where one might need to modify the set
105 of configured macros, for example this if deprecated symbols are
106 still supposed to be available internally:
108 #include <openssl/configuration.h>
110 #undef OPENSSL_NO_DEPRECATED
111 #define OPENSSL_SUPPRESS_DEPRECATED
113 #include <openssl/macros.h>
115 This should not be used by applications that use the exported
116 symbols, as that will lead to linking errors.
119 *) Fixed an an overflow bug in the x64_64 Montgomery squaring procedure
120 used in exponentiation with 512-bit moduli. No EC algorithms are
121 affected. Analysis suggests that attacks against 2-prime RSA1024,
122 3-prime RSA1536, and DSA1024 as a result of this defect would be very
123 difficult to perform and are not believed likely. Attacks against DH512
124 are considered just feasible. However, for an attack the target would
125 have to re-use the DH512 private key, which is not recommended anyway.
126 Also applications directly using the low level API BN_mod_exp may be
127 affected if they use BN_FLG_CONSTTIME.
131 *) Most memory-debug features have been deprecated, and the functionality
132 replaced with no-ops.
135 *) Introduced a new method type and API, OSSL_SERIALIZER, to
136 represent generic serializers. An implementation is expected to
137 be able to serialize an object associated with a given name (such
138 as an algorithm name for an asymmetric key) into forms given by
139 implementation properties.
141 Serializers are primarily used from inside libcrypto, through
142 calls to functions like EVP_PKEY_print_private(),
143 PEM_write_bio_PrivateKey() and similar.
145 Serializers are specified in such a way that they can be made to
146 directly handle the provider side portion of an object, if this
147 provider side part comes from the same provider as the serializer
148 itself, but can also be made to handle objects in parametrized
149 form (as an OSSL_PARAM array of data). This allows a provider to
150 offer generic serializers as a service for any other provider.
153 *) Added a .pragma directive to the syntax of configuration files, to
154 allow varying behavior in a supported and predictable manner.
155 Currently added pragma:
159 This allows dollar signs to be a keyword character unless it's
160 followed by a opening brace or parenthesis. This is useful for
161 platforms where dollar signs are commonly used in names, such as
162 volume names and system directory names on VMS.
165 *) Added functionality to create an EVP_PKEY from user data. This
166 is effectively the same as creating a RSA, DH or DSA object and
167 then assigning them to an EVP_PKEY, but directly using algorithm
168 agnostic EVP functions. A benefit is that this should be future
169 proof for public key algorithms to come.
172 *) Change the interpretation of the '--api' configuration option to
173 mean that this is a desired API compatibility level with no
174 further meaning. The previous interpretation, that this would
175 also mean to remove all deprecated symbols up to and including
176 the given version, no requires that 'no-deprecated' is also used
177 in the configuration.
179 When building applications, the desired API compatibility level
180 can be set with the OPENSSL_API_COMPAT macro like before. For
181 API compatibility version below 3.0, the old style numerical
182 value is valid as before, such as -DOPENSSL_API_COMPAT=0x10100000L.
183 For version 3.0 and on, the value is expected to be the decimal
184 value calculated from the major and minor version like this:
186 MAJOR * 10000 + MINOR * 100
190 -DOPENSSL_API_COMPAT=30000 For 3.0
191 -DOPENSSL_API_COMPAT=30200 For 3.2
193 To hide declarations that are deprecated up to and including the
194 given API compatibility level, -DOPENSSL_NO_DEPRECATED must be
195 given when building the application as well.
198 *) Added the X509_LOOKUP_METHOD called X509_LOOKUP_store, to allow
199 access to certificate and CRL stores via URIs and OSSL_STORE
202 This adds the following functions:
205 X509_STORE_load_file()
206 X509_STORE_load_path()
207 X509_STORE_load_store()
208 SSL_add_store_cert_subjects_to_stack()
209 SSL_CTX_set_default_verify_store()
210 SSL_CTX_load_verify_file()
211 SSL_CTX_load_verify_dir()
212 SSL_CTX_load_verify_store()
214 Also, the following functions are now deprecated:
216 - X509_STORE_load_locations() (use X509_STORE_load_file(),
217 X509_STORE_load_path() or X509_STORE_load_store() instead)
218 - SSL_CTX_load_verify_locations() (use SSL_CTX_load_verify_file(),
219 SSL_CTX_load_verify_dir() or SSL_CTX_load_verify_store() instead)
222 *) Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
223 The presence of this system service is determined at run-time.
226 *) Added functionality to create an EVP_PKEY context based on data
227 for methods from providers. This takes an algorithm name and a
228 property query string and simply stores them, with the intent
229 that any operation that uses this context will use those strings
230 to fetch the needed methods implicitly, thereby making the port
231 of application written for pre-3.0 OpenSSL easier.
234 *) The undocumented function NCONF_WIN32() has been deprecated; for
235 conversion details see the HISTORY section of doc/man5/config.pod
238 *) Introduced the new functions EVP_DigestSignInit_ex() and
239 EVP_DigestVerifyInit_ex(). The macros EVP_DigestSignUpdate() and
240 EVP_DigestVerifyUpdate() have been converted to functions. See the man
241 pages for further details.
244 *) Most common options (such as -rand/-writerand, TLS version control, etc)
245 were refactored and point to newly-enhanced descriptions in openssl.pod
248 *) Over two thousand fixes were made to the documentation, including:
249 adding missing command flags, better style conformance, documentation
251 [Rich Salz, Richard Levitte]
253 *) s390x assembly pack: add hardware-support for P-256, P-384, P-521,
254 X25519, X448, Ed25519 and Ed448.
257 *) Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
261 *) Deprecated the public definition of ERR_STATE as well as the function
262 ERR_get_state(). This is done in preparation of making ERR_STATE an
266 *) Added ERR functionality to give callers access to the stored function
267 names that have replaced the older function code based functions.
269 New functions are ERR_get_error_func(), ERR_peek_error_func(),
270 ERR_peek_last_error_func(), ERR_get_error_data(), ERR_peek_error_data(),
271 ERR_peek_last_error_data(), ERR_get_error_all(), ERR_peek_error_all()
272 and ERR_peek_last_error_all().
274 These functions have become deprecated: ERR_get_error_line_data(),
275 ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
276 ERR_func_error_string().
279 *) Extended testing to be verbose for failing tests only. The make variables
280 VERBOSE_FAILURE or VF can be used to enable this:
282 $ make VF=1 test # Unix
283 $ mms /macro=(VF=1) test ! OpenVMS
284 $ nmake VF=1 test # Windows
288 *) For built-in EC curves, ensure an EC_GROUP built from the curve name is
289 used even when parsing explicit parameters, when loading a serialized key
290 or calling `EC_GROUP_new_from_ecpkparameters()`/
291 `EC_GROUP_new_from_ecparameters()`.
292 This prevents bypass of security hardening and performance gains,
293 especially for curves with specialized EC_METHODs.
294 By default, if a key encoded with explicit parameters is loaded and later
295 serialized, the output is still encoded with explicit parameters, even if
296 internally a "named" EC_GROUP is used for computation.
299 *) Compute ECC cofactors if not provided during EC_GROUP construction. Before
300 this change, EC_GROUP_set_generator would accept order and/or cofactor as
301 NULL. After this change, only the cofactor parameter can be NULL. It also
302 does some minimal sanity checks on the passed order.
306 *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
307 An attack is simple, if the first CMS_recipientInfo is valid but the
308 second CMS_recipientInfo is chosen ciphertext. If the second
309 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
310 encryption key will be replaced by garbage, and the message cannot be
311 decoded, but if the RSA decryption fails, the correct encryption key is
312 used and the recipient will not notice the attack.
313 As a work around for this potential attack the length of the decrypted
314 key must be equal to the cipher default key length, in case the
315 certifiate is not given and all recipientInfo are tried out.
316 The old behaviour can be re-enabled in the CMS code by setting the
317 CMS_DEBUG_DECRYPT flag.
320 *) Early start up entropy quality from the DEVRANDOM seed source has been
321 improved for older Linux systems. The RAND subsystem will wait for
322 /dev/random to be producing output before seeding from /dev/urandom.
323 The seeded state is stored for future library initialisations using
324 a system global shared memory segment. The shared memory identifier
325 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
326 the desired value. The default identifier is 114.
329 *) Revised BN_generate_prime_ex to not avoid factors 2..17863 in p-1
330 when primes for RSA keys are computed.
331 Since we previously always generated primes == 2 (mod 3) for RSA keys,
332 the 2-prime and 3-prime RSA modules were easy to distinguish, since
333 N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
334 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
335 This avoids possible fingerprinting of newly generated RSA modules.
338 *) Correct the extended master secret constant on EBCDIC systems. Without this
339 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
340 negotiate EMS will fail. Unfortunately this also means that TLS connections
341 between EBCDIC systems with this fix, and EBCDIC systems without this
342 fix will fail if they negotiate EMS.
345 *) Changed the library initialisation so that the config file is now loaded
346 by default. This was already the case for libssl. It now occurs for both
347 libcrypto and libssl. Use the OPENSSL_INIT_NO_LOAD_CONFIG option to
348 OPENSSL_init_crypto() to suppress automatic loading of a config file.
351 *) Introduced new error raising macros, ERR_raise() and ERR_raise_data(),
352 where the former acts as a replacement for ERR_put_error(), and the
353 latter replaces the combination ERR_put_error()+ERR_add_error_data().
354 ERR_raise_data() adds more flexibility by taking a format string and
355 an arbitrary number of arguments following it, to be processed with
359 *) Introduced a new function, OSSL_PROVIDER_available(), which can be used
360 to check if a named provider is loaded and available. When called, it
361 will also activate all fallback providers if such are still present.
364 *) Enforce a minimum DH modulus size of 512 bits.
367 *) Changed DH parameters to generate the order q subgroup instead of 2q.
368 Previously generated DH parameters are still accepted by DH_check
369 but DH_generate_key works around that by clearing bit 0 of the
370 private key for those. This avoids leaking bit 0 of the private key.
373 *) Significantly reduce secure memory usage by the randomness pools.
376 *) {CRYPTO,OPENSSL}_mem_debug_{push,pop} are now no-ops and have been
380 *) A new type, EVP_KEYEXCH, has been introduced to represent key exchange
381 algorithms. An implementation of a key exchange algorithm can be obtained
382 by using the function EVP_KEYEXCH_fetch(). An EVP_KEYEXCH algorithm can be
383 used in a call to EVP_PKEY_derive_init_ex() which works in a similar way to
384 the older EVP_PKEY_derive_init() function. See the man pages for the new
385 functions for further details.
388 *) The EVP_PKEY_CTX_set_dh_pad() macro has now been converted to a function.
391 *) Removed the function names from error messages and deprecated the
394 *) Removed NextStep support and the macro OPENSSL_UNISTD
397 *) Removed DES_check_key. Also removed OPENSSL_IMPLEMENT_GLOBAL,
398 OPENSSL_GLOBAL_REF, OPENSSL_DECLARE_GLOBAL.
399 Also removed "export var as function" capability; we do not export
400 variables, only functions.
403 *) RC5_32_set_key has been changed to return an int type, with 0 indicating
404 an error and 1 indicating success. In previous versions of OpenSSL this
405 was a void type. If a key was set longer than the maximum possible this
409 *) Support SM2 signing and verification schemes with X509 certificate.
412 *) Use SHA256 as the default digest for TS query in the ts app.
415 *) Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
416 This checks that the salt length is at least 128 bits, the derived key
417 length is at least 112 bits, and that the iteration count is at least 1000.
418 For backwards compatibility these checks are disabled by default in the
419 default provider, but are enabled by default in the fips provider.
420 To enable or disable these checks use the control
421 EVP_KDF_CTRL_SET_PBKDF2_PKCS5_MODE.
424 *) Default cipher lists/suites are now available via a function, the
425 #defines are deprecated.
428 *) Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
429 VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
430 for Windows Store apps easier. Also, the "no-uplink" option has been added.
433 *) Join the directories crypto/x509 and crypto/x509v3
436 *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
437 This changes the size when using the genpkey app when no size is given. It
438 fixes an omission in earlier changes that changed all RSA, DSA and DH
439 generation apps to use 2048 bits by default.
442 *) Added command 'openssl kdf' that uses the EVP_KDF API.
445 *) Added command 'openssl mac' that uses the EVP_MAC API.
448 *) Added OPENSSL_info() to get diverse built-in OpenSSL data, such
449 as default directories. Also added the command 'openssl info'
450 for scripting purposes.
453 *) The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have been
454 deprecated. These undocumented functions were never integrated into the EVP
455 layer and implement the AES Infinite Garble Extension (IGE) mode and AES
456 Bi-directional IGE mode. These modes were never formally standardised and
457 usage of these functions is believed to be very small. In particular
458 AES_bi_ige_encrypt() has a known bug. It accepts 2 AES keys, but only one
459 is ever used. The security implications are believed to be minimal, but
460 this issue was never fixed for backwards compatibility reasons. New code
461 should not use these modes.
464 *) Add prediction resistance to the DRBG reseeding process.
467 *) Limit the number of blocks in a data unit for AES-XTS to 2^20 as
468 mandated by IEEE Std 1619-2018.
471 *) Added newline escaping functionality to a filename when using openssl dgst.
472 This output format is to replicate the output format found in the '*sum'
473 checksum programs. This aims to preserve backward compatibility.
474 [Matt Eaton, Richard Levitte, and Paul Dale]
476 *) Removed the heartbeat message in DTLS feature, as it has very
477 little usage and doesn't seem to fulfill a valuable purpose.
478 The configuration option is now deprecated.
481 *) Changed the output of 'openssl {digestname} < file' to display the
482 digest name in its output.
485 *) Added a new generic trace API which provides support for enabling
486 instrumentation through trace output. This feature is mainly intended
487 as an aid for developers and is disabled by default. To utilize it,
488 OpenSSL needs to be configured with the `enable-trace` option.
490 If the tracing API is enabled, the application can activate trace output
491 by registering BIOs as trace channels for a number of tracing and debugging
494 The 'openssl' application has been expanded to enable any of the types
495 available via environment variables defined by the user, and serves as
496 one possible example on how to use this functionality.
497 [Richard Levitte & Matthias St. Pierre]
499 *) Added build tests for C++. These are generated files that only do one
500 thing, to include one public OpenSSL head file each. This tests that
501 the public header files can be usefully included in a C++ application.
503 This test isn't enabled by default. It can be enabled with the option
504 'enable-buildtest-c++'.
507 *) Add Single Step KDF (EVP_KDF_SS) to EVP_KDF.
510 *) Add KMAC to EVP_MAC.
513 *) Added property based algorithm implementation selection framework to
517 *) Added SCA hardening for modular field inversion in EC_GROUP through
518 a new dedicated field_inv() pointer in EC_METHOD.
519 This also addresses a leakage affecting conversions from projective
520 to affine coordinates.
521 [Billy Bob Brumley, Nicola Tuveri]
523 *) Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
524 implementations. This includes an EVP_PKEY to EVP_KDF bridge for
525 those algorithms that were already supported through the EVP_PKEY API
526 (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
527 and scrypt are now wrappers that call EVP_KDF.
530 *) Build devcrypto engine as a dynamic engine.
533 *) Add keyed BLAKE2 to EVP_MAC.
536 *) Fix a bug in the computation of the endpoint-pair shared secret used
537 by DTLS over SCTP. This breaks interoperability with older versions
538 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
539 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
540 interoperability with such broken implementations. However, enabling
541 this switch breaks interoperability with correct implementations.
543 *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
544 re-used X509_PUBKEY object if the second PUBKEY is malformed.
547 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
550 *) Change the license to the Apache License v2.0.
553 *) Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
555 o Major releases (indicated by incrementing the MAJOR release number)
556 may introduce incompatible API/ABI changes.
557 o Minor releases (indicated by incrementing the MINOR release number)
558 may introduce new features but retain API/ABI compatibility.
559 o Patch releases (indicated by incrementing the PATCH number)
560 are intended for bug fixes and other improvements of existing
561 features only (like improving performance or adding documentation)
562 and retain API/ABI compatibility.
565 *) Add support for RFC5297 SIV mode (siv128), including AES-SIV.
568 *) Remove the 'dist' target and add a tarball building script. The
569 'dist' target has fallen out of use, and it shouldn't be
570 necessary to configure just to create a source distribution.
573 *) Recreate the OS390-Unix config target. It no longer relies on a
574 special script like it did for OpenSSL pre-1.1.0.
577 *) Instead of having the source directories listed in Configure, add
578 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
582 *) Add GMAC to EVP_MAC.
585 *) Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
588 *) Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
589 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
590 to facilitate the continued use of MACs through raw private keys in
591 functionality such as EVP_DigestSign* and EVP_DigestVerify*.
594 *) Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
595 should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
598 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
599 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
600 are retained for backwards compatibility.
603 *) AES-XTS mode now enforces that its two keys are different to mitigate
604 the attacked described in "Efficient Instantiations of Tweakable
605 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
606 Details of this attack can be obtained from:
607 http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf
610 *) Rename the object files, i.e. give them other names than in previous
611 versions. Their names now include the name of the final product, as
612 well as its type mnemonic (bin, lib, shlib).
615 *) Added new option for 'openssl list', '-objects', which will display the
616 list of built in objects, i.e. OIDs with names.
619 *) Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
620 improves application performance by removing data copies and providing
621 applications with zero-copy system calls such as sendfile and splice.
624 Changes between 1.1.1a and 1.1.1b [xx XXX xxxx]
626 *) Change the info callback signals for the start and end of a post-handshake
627 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
628 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
629 confused by this and assume that a TLSv1.2 renegotiation has started. This
630 can break KeyUpdate handling. Instead we no longer signal the start and end
631 of a post handshake message exchange (although the messages themselves are
632 still signalled). This could break some applications that were expecting
633 the old signals. However without this KeyUpdate is not usable for many
637 Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
639 *) Timing vulnerability in DSA signature generation
641 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
642 timing side channel attack. An attacker could use variations in the signing
643 algorithm to recover the private key.
645 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
649 *) Timing vulnerability in ECDSA signature generation
651 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
652 timing side channel attack. An attacker could use variations in the signing
653 algorithm to recover the private key.
655 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
659 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
660 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
661 of two gigabytes and the error handling improved.
663 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
664 categorized as a normal bug, not a security issue, because the DRBG reseeds
665 automatically and is fully functional even without additional randomness
666 provided by the application.
668 Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
670 *) Add a new ClientHello callback. Provides a callback interface that gives
671 the application the ability to adjust the nascent SSL object at the
672 earliest stage of ClientHello processing, immediately after extensions have
673 been collected but before they have been processed. In particular, this
674 callback can adjust the supported TLS versions in response to the contents
678 *) Add SM2 base algorithm support.
681 *) s390x assembly pack: add (improved) hardware-support for the following
682 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
683 aes-cfb/cfb8, aes-ecb.
686 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
687 parameter is no longer accepted, as it leads to a corrupt table. NULL
688 pem_str is reserved for alias entries only.
691 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
692 step for prime curves. The new implementation is based on formulae from
693 differential addition-and-doubling in homogeneous projective coordinates
694 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
695 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
696 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
697 to work in projective coordinates.
698 [Billy Bob Brumley, Nicola Tuveri]
700 *) Change generating and checking of primes so that the error rate of not
701 being prime depends on the intended use based on the size of the input.
702 For larger primes this will result in more rounds of Miller-Rabin.
703 The maximal error rate for primes with more than 1080 bits is lowered
705 [Kurt Roeckx, Annie Yousar]
707 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
710 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
711 moving between systems, and to avoid confusion when a Windows build is
712 done with mingw vs with MSVC. For POSIX installs, there's still a
713 symlink or copy named 'tsget' to avoid that confusion as well.
716 *) Revert blinding in ECDSA sign and instead make problematic addition
717 length-invariant. Switch even to fixed-length Montgomery multiplication.
720 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
721 step for binary curves. The new implementation is based on formulae from
722 differential addition-and-doubling in mixed Lopez-Dahab projective
723 coordinates, modified to independently blind the operands.
724 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
726 *) Add a scaffold to optionally enhance the Montgomery ladder implementation
727 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
728 EC_METHODs to implement their own specialized "ladder step", to take
729 advantage of more favorable coordinate systems or more efficient
730 differential addition-and-doubling algorithms.
731 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
733 *) Modified the random device based seed sources to keep the relevant
734 file descriptors open rather than reopening them on each access.
735 This allows such sources to operate in a chroot() jail without
736 the associated device nodes being available. This behaviour can be
737 controlled using RAND_keep_random_devices_open().
740 *) Numerous side-channel attack mitigations have been applied. This may have
741 performance impacts for some algorithms for the benefit of improved
742 security. Specific changes are noted in this change log by their respective
746 *) AIX shared library support overhaul. Switch to AIX "natural" way of
747 handling shared libraries, which means collecting shared objects of
748 different versions and bitnesses in one common archive. This allows to
749 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
750 doesn't affect the way 3rd party applications are linked, only how
751 multi-version installation is managed.
754 *) Make ec_group_do_inverse_ord() more robust and available to other
755 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
756 mitigations are applied to the fallback BN_mod_inverse().
757 When using this function rather than BN_mod_inverse() directly, new
758 EC cryptosystem implementations are then safer-by-default.
761 *) Add coordinate blinding for EC_POINT and implement projective
762 coordinate blinding for generic prime curves as a countermeasure to
763 chosen point SCA attacks.
764 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
766 *) Add blinding to ECDSA and DSA signatures to protect against side channel
767 attacks discovered by Keegan Ryan (NCC Group).
770 *) Enforce checking in the pkeyutl command line app to ensure that the input
771 length does not exceed the maximum supported digest length when performing
772 a sign, verify or verifyrecover operation.
775 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
776 I/O in combination with something like select() or poll() will hang. This
777 can be turned off again using SSL_CTX_clear_mode().
778 Many applications do not properly handle non-application data records, and
779 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
780 around the problems in those applications, but can also break some.
781 It's recommended to read the manpages about SSL_read(), SSL_write(),
782 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
783 SSL_CTX_set_read_ahead() again.
786 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
787 now allow empty (zero character) pass phrases.
790 *) Apply blinding to binary field modular inversion and remove patent
791 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
794 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
795 binary and prime elliptic curves.
798 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
799 constant time fixed point multiplication.
802 *) Revise elliptic curve scalar multiplication with timing attack
803 defenses: ec_wNAF_mul redirects to a constant time implementation
804 when computing fixed point and variable point multiplication (which
805 in OpenSSL are mostly used with secret scalars in keygen, sign,
806 ECDH derive operations).
807 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida GarcÃa,
810 *) Updated CONTRIBUTING
813 *) Updated DRBG / RAND to request nonce and additional low entropy
814 randomness from the system.
815 [Matthias St. Pierre]
817 *) Updated 'openssl rehash' to use OpenSSL consistent default.
820 *) Moved the load of the ssl_conf module to libcrypto, which helps
821 loading engines that libssl uses before libssl is initialised.
824 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
827 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
828 [Ingo Schwarze, Rich Salz]
830 *) Added output of accepting IP address and port for 'openssl s_server'
833 *) Added a new API for TLSv1.3 ciphersuites:
834 SSL_CTX_set_ciphersuites()
835 SSL_set_ciphersuites()
838 *) Memory allocation failures consistently add an error to the error
842 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
843 in libcrypto when run as setuid/setgid.
846 *) Load any config file by default when libssl is used.
849 *) Added new public header file <openssl/rand_drbg.h> and documentation
850 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
851 [Matthias St. Pierre]
853 *) QNX support removed (cannot find contributors to get their approval
854 for the license change).
857 *) TLSv1.3 replay protection for early data has been implemented. See the
858 SSL_read_early_data() man page for further details.
861 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
862 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
863 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
864 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
865 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
866 configuration has been separated out. See the ciphers man page or the
867 SSL_CTX_set_ciphersuites() man page for more information.
870 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
871 in responder mode now supports the new "-multi" option, which
872 spawns the specified number of child processes to handle OCSP
873 requests. The "-timeout" option now also limits the OCSP
874 responder's patience to wait to receive the full client request
875 on a newly accepted connection. Child processes are respawned
876 as needed, and the CA index file is automatically reloaded
877 when changed. This makes it possible to run the "ocsp" responder
878 as a long-running service, making the OpenSSL CA somewhat more
879 feature-complete. In this mode, most diagnostic messages logged
880 after entering the event loop are logged via syslog(3) rather than
884 *) Added support for X448 and Ed448. Heavily based on original work by
888 *) Extend OSSL_STORE with capabilities to search and to narrow the set of
889 objects loaded. This adds the functions OSSL_STORE_expect() and
890 OSSL_STORE_find() as well as needed tools to construct searches and
891 get the search data out of them.
894 *) Support for TLSv1.3 added. Note that users upgrading from an earlier
895 version of OpenSSL should review their configuration settings to ensure
896 that they are still appropriate for TLSv1.3. For further information see:
897 https://wiki.openssl.org/index.php/TLS1.3
900 *) Grand redesign of the OpenSSL random generator
902 The default RAND method now utilizes an AES-CTR DRBG according to
903 NIST standard SP 800-90Ar1. The new random generator is essentially
904 a port of the default random generator from the OpenSSL FIPS 2.0
905 object module. It is a hybrid deterministic random bit generator
906 using an AES-CTR bit stream and which seeds and reseeds itself
907 automatically using trusted system entropy sources.
909 Some of its new features are:
910 o Support for multiple DRBG instances with seed chaining.
911 o The default RAND method makes use of a DRBG.
912 o There is a public and private DRBG instance.
913 o The DRBG instances are fork-safe.
914 o Keep all global DRBG instances on the secure heap if it is enabled.
915 o The public and private DRBG instance are per thread for lock free
917 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
919 *) Changed Configure so it only says what it does and doesn't dump
920 so much data. Instead, ./configdata.pm should be used as a script
921 to display all sorts of configuration data.
924 *) Added processing of "make variables" to Configure.
927 *) Added SHA512/224 and SHA512/256 algorithm support.
930 *) The last traces of Netware support, first removed in 1.1.0, have
934 *) Get rid of Makefile.shared, and in the process, make the processing
935 of certain files (rc.obj, or the .def/.map/.opt files produced from
936 the ordinal files) more visible and hopefully easier to trace and
937 debug (or make silent).
940 *) Make it possible to have environment variable assignments as
941 arguments to config / Configure.
944 *) Add multi-prime RSA (RFC 8017) support.
947 *) Add SM3 implemented according to GB/T 32905-2016
948 [ Jack Lloyd <jack.lloyd@ribose.com>,
949 Ronald Tse <ronald.tse@ribose.com>,
950 Erick Borsboom <erick.borsboom@ribose.com> ]
952 *) Add 'Maximum Fragment Length' TLS extension negotiation and support
953 as documented in RFC6066.
954 Based on a patch from Tomasz Moń
955 [Filipe Raimundo da Silva]
957 *) Add SM4 implemented according to GB/T 32907-2016.
958 [ Jack Lloyd <jack.lloyd@ribose.com>,
959 Ronald Tse <ronald.tse@ribose.com>,
960 Erick Borsboom <erick.borsboom@ribose.com> ]
962 *) Reimplement -newreq-nodes and ERR_error_string_n; the
963 original author does not agree with the license change.
966 *) Add ARIA AEAD TLS support.
969 *) Some macro definitions to support VS6 have been removed. Visual
970 Studio 6 has not worked since 1.1.0
973 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
974 without clearing the errors.
977 *) Add "atfork" functions. If building on a system that without
978 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
979 requirements. The RAND facility now uses/requires this.
985 *) The UI API becomes a permanent and integral part of libcrypto, i.e.
986 not possible to disable entirely. However, it's still possible to
987 disable the console reading UI method, UI_OpenSSL() (use UI_null()
990 To disable, configure with 'no-ui-console'. 'no-ui' is still
991 possible to use as an alias. Check at compile time with the
992 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
993 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
996 *) Add a STORE module, which implements a uniform and URI based reader of
997 stores that can contain keys, certificates, CRLs and numerous other
998 objects. The main API is loosely based on a few stdio functions,
999 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
1000 OSSL_STORE_error and OSSL_STORE_close.
1001 The implementation uses backends called "loaders" to implement arbitrary
1002 URI schemes. There is one built in "loader" for the 'file' scheme.
1005 *) Add devcrypto engine. This has been implemented against cryptodev-linux,
1006 then adjusted to work on FreeBSD 8.4 as well.
1007 Enable by configuring with 'enable-devcryptoeng'. This is done by default
1008 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
1011 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
1012 util/mkerr.pl, which is adapted to allow those prefixes, leading to
1013 error code calls like this:
1015 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
1017 With this change, we claim the namespaces OSSL and OPENSSL in a manner
1018 that can be encoded in C. For the foreseeable future, this will only
1020 [Richard Levitte and Tim Hudson]
1022 *) Removed BSD cryptodev engine.
1025 *) Add a build target 'build_all_generated', to build all generated files
1026 and only that. This can be used to prepare everything that requires
1027 things like perl for a system that lacks perl and then move everything
1028 to that system and do the rest of the build there.
1031 *) In the UI interface, make it possible to duplicate the user data. This
1032 can be used by engines that need to retain the data for a longer time
1033 than just the call where this user data is passed.
1036 *) Ignore the '-named_curve auto' value for compatibility of applications
1038 [Tomas Mraz <tmraz@fedoraproject.org>]
1040 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
1041 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
1042 alerts across multiple records (some of which could be empty). In practice
1043 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
1044 prohibts this altogether and other libraries (BoringSSL, NSS) do not
1045 support this at all. Supporting it adds significant complexity to the
1046 record layer, and its removal is unlikely to cause inter-operability
1050 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
1051 with Z. These are meant to replace LONG and ZLONG and to be size safe.
1052 The use of LONG and ZLONG is discouraged and scheduled for deprecation
1056 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
1057 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
1058 [Richard Levitte, Andy Polyakov]
1060 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
1064 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
1065 platform rather than 'mingw'.
1068 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
1069 success if they are asked to add an object which already exists
1070 in the store. This change cascades to other functions which load
1071 certificates and CRLs.
1074 *) x86_64 assembly pack: annotate code with DWARF CFI directives to
1075 facilitate stack unwinding even from assembly subroutines.
1078 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
1079 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
1082 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
1083 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
1084 which is the minimum version we support.
1087 *) Certificate time validation (X509_cmp_time) enforces stricter
1088 compliance with RFC 5280. Fractional seconds and timezone offsets
1089 are no longer allowed.
1092 *) Add support for ARIA
1095 *) s_client will now send the Server Name Indication (SNI) extension by
1096 default unless the new "-noservername" option is used. The server name is
1097 based on the host provided to the "-connect" option unless overridden by
1098 using "-servername".
1101 *) Add support for SipHash
1104 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
1105 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
1106 prevent issues where no progress is being made and the peer continually
1107 sends unrecognised record types, using up resources processing them.
1110 *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
1111 using the algorithm defined in
1112 https://www.akkadia.org/drepper/SHA-crypt.txt
1115 *) Heartbeat support has been removed; the ABI is changed for now.
1116 [Richard Levitte, Rich Salz]
1118 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
1121 *) The RSA "null" method, which was partially supported to avoid patent
1122 issues, has been replaced to always returns NULL.
1126 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
1128 *) Client DoS due to large DH parameter
1130 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
1131 malicious server can send a very large prime value to the client. This will
1132 cause the client to spend an unreasonably long period of time generating a
1133 key for this prime resulting in a hang until the client has finished. This
1134 could be exploited in a Denial Of Service attack.
1136 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
1140 *) Cache timing vulnerability in RSA Key Generation
1142 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
1143 a cache timing side channel attack. An attacker with sufficient access to
1144 mount cache timing attacks during the RSA key generation process could
1145 recover the private key.
1147 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
1148 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
1152 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
1153 parameter is no longer accepted, as it leads to a corrupt table. NULL
1154 pem_str is reserved for alias entries only.
1157 *) Revert blinding in ECDSA sign and instead make problematic addition
1158 length-invariant. Switch even to fixed-length Montgomery multiplication.
1161 *) Change generating and checking of primes so that the error rate of not
1162 being prime depends on the intended use based on the size of the input.
1163 For larger primes this will result in more rounds of Miller-Rabin.
1164 The maximal error rate for primes with more than 1080 bits is lowered
1166 [Kurt Roeckx, Annie Yousar]
1168 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
1171 *) Add blinding to ECDSA and DSA signatures to protect against side channel
1172 attacks discovered by Keegan Ryan (NCC Group).
1175 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
1176 now allow empty (zero character) pass phrases.
1179 *) Certificate time validation (X509_cmp_time) enforces stricter
1180 compliance with RFC 5280. Fractional seconds and timezone offsets
1181 are no longer allowed.
1184 *) Fixed a text canonicalisation bug in CMS
1186 Where a CMS detached signature is used with text content the text goes
1187 through a canonicalisation process first prior to signing or verifying a
1188 signature. This process strips trailing space at the end of lines, converts
1189 line terminators to CRLF and removes additional trailing line terminators
1190 at the end of a file. A bug in the canonicalisation process meant that
1191 some characters, such as form-feed, were incorrectly treated as whitespace
1192 and removed. This is contrary to the specification (RFC5485). This fix
1193 could mean that detached text data signed with an earlier version of
1194 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
1195 signed with a fixed OpenSSL may fail to verify with an earlier version of
1196 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
1197 and use the "-binary" flag (for the "cms" command line application) or set
1198 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
1201 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
1203 *) Constructed ASN.1 types with a recursive definition could exceed the stack
1205 Constructed ASN.1 types with a recursive definition (such as can be found
1206 in PKCS7) could eventually exceed the stack given malicious input with
1207 excessive recursion. This could result in a Denial Of Service attack. There
1208 are no such structures used within SSL/TLS that come from untrusted sources
1209 so this is considered safe.
1211 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
1216 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
1218 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
1219 effectively reduced to only comparing the least significant bit of each
1220 byte. This allows an attacker to forge messages that would be considered as
1221 authenticated in an amount of tries lower than that guaranteed by the
1222 security claims of the scheme. The module can only be compiled by the
1223 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
1225 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
1230 *) Add a build target 'build_all_generated', to build all generated files
1231 and only that. This can be used to prepare everything that requires
1232 things like perl for a system that lacks perl and then move everything
1233 to that system and do the rest of the build there.
1236 *) Backport SSL_OP_NO_RENGOTIATION
1238 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
1239 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
1240 changes this is no longer possible in 1.1.0. Therefore the new
1241 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
1242 1.1.0 to provide equivalent functionality.
1244 Note that if an application built against 1.1.0h headers (or above) is run
1245 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
1246 accepted but nothing will happen, i.e. renegotiation will not be prevented.
1249 *) Removed the OS390-Unix config target. It relied on a script that doesn't
1253 *) rsaz_1024_mul_avx2 overflow bug on x86_64
1255 There is an overflow bug in the AVX2 Montgomery multiplication procedure
1256 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
1257 Analysis suggests that attacks against RSA and DSA as a result of this
1258 defect would be very difficult to perform and are not believed likely.
1259 Attacks against DH1024 are considered just feasible, because most of the
1260 work necessary to deduce information about a private key may be performed
1261 offline. The amount of resources required for such an attack would be
1262 significant. However, for an attack on TLS to be meaningful, the server
1263 would have to share the DH1024 private key among multiple clients, which is
1264 no longer an option since CVE-2016-0701.
1266 This only affects processors that support the AVX2 but not ADX extensions
1267 like Intel Haswell (4th generation).
1269 This issue was reported to OpenSSL by David Benjamin (Google). The issue
1270 was originally found via the OSS-Fuzz project.
1274 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
1276 *) bn_sqrx8x_internal carry bug on x86_64
1278 There is a carry propagating bug in the x86_64 Montgomery squaring
1279 procedure. No EC algorithms are affected. Analysis suggests that attacks
1280 against RSA and DSA as a result of this defect would be very difficult to
1281 perform and are not believed likely. Attacks against DH are considered just
1282 feasible (although very difficult) because most of the work necessary to
1283 deduce information about a private key may be performed offline. The amount
1284 of resources required for such an attack would be very significant and
1285 likely only accessible to a limited number of attackers. An attacker would
1286 additionally need online access to an unpatched system using the target
1287 private key in a scenario with persistent DH parameters and a private
1288 key that is shared between multiple clients.
1290 This only affects processors that support the BMI1, BMI2 and ADX extensions
1291 like Intel Broadwell (5th generation) and later or AMD Ryzen.
1293 This issue was reported to OpenSSL by the OSS-Fuzz project.
1297 *) Malformed X.509 IPAddressFamily could cause OOB read
1299 If an X.509 certificate has a malformed IPAddressFamily extension,
1300 OpenSSL could do a one-byte buffer overread. The most likely result
1301 would be an erroneous display of the certificate in text format.
1303 This issue was reported to OpenSSL by the OSS-Fuzz project.
1307 Changes between 1.1.0e and 1.1.0f [25 May 2017]
1309 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
1310 platform rather than 'mingw'.
1313 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
1314 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
1315 which is the minimum version we support.
1318 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
1320 *) Encrypt-Then-Mac renegotiation crash
1322 During a renegotiation handshake if the Encrypt-Then-Mac extension is
1323 negotiated where it was not in the original handshake (or vice-versa) then
1324 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
1325 and servers are affected.
1327 This issue was reported to OpenSSL by Joe Orton (Red Hat).
1331 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
1333 *) Truncated packet could crash via OOB read
1335 If one side of an SSL/TLS path is running on a 32-bit host and a specific
1336 cipher is being used, then a truncated packet can cause that host to
1337 perform an out-of-bounds read, usually resulting in a crash.
1339 This issue was reported to OpenSSL by Robert Święcki of Google.
1343 *) Bad (EC)DHE parameters cause a client crash
1345 If a malicious server supplies bad parameters for a DHE or ECDHE key
1346 exchange then this can result in the client attempting to dereference a
1347 NULL pointer leading to a client crash. This could be exploited in a Denial
1350 This issue was reported to OpenSSL by Guido Vranken.
1354 *) BN_mod_exp may produce incorrect results on x86_64
1356 There is a carry propagating bug in the x86_64 Montgomery squaring
1357 procedure. No EC algorithms are affected. Analysis suggests that attacks
1358 against RSA and DSA as a result of this defect would be very difficult to
1359 perform and are not believed likely. Attacks against DH are considered just
1360 feasible (although very difficult) because most of the work necessary to
1361 deduce information about a private key may be performed offline. The amount
1362 of resources required for such an attack would be very significant and
1363 likely only accessible to a limited number of attackers. An attacker would
1364 additionally need online access to an unpatched system using the target
1365 private key in a scenario with persistent DH parameters and a private
1366 key that is shared between multiple clients. For example this can occur by
1367 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
1368 similar to CVE-2015-3193 but must be treated as a separate problem.
1370 This issue was reported to OpenSSL by the OSS-Fuzz project.
1374 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
1376 *) ChaCha20/Poly1305 heap-buffer-overflow
1378 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
1379 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
1380 crash. This issue is not considered to be exploitable beyond a DoS.
1382 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
1386 *) CMS Null dereference
1388 Applications parsing invalid CMS structures can crash with a NULL pointer
1389 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
1390 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
1391 structure callback if an attempt is made to free certain invalid encodings.
1392 Only CHOICE structures using a callback which do not handle NULL value are
1395 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
1399 *) Montgomery multiplication may produce incorrect results
1401 There is a carry propagating bug in the Broadwell-specific Montgomery
1402 multiplication procedure that handles input lengths divisible by, but
1403 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
1404 and DH private keys are impossible. This is because the subroutine in
1405 question is not used in operations with the private key itself and an input
1406 of the attacker's direct choice. Otherwise the bug can manifest itself as
1407 transient authentication and key negotiation failures or reproducible
1408 erroneous outcome of public-key operations with specially crafted input.
1409 Among EC algorithms only Brainpool P-512 curves are affected and one
1410 presumably can attack ECDH key negotiation. Impact was not analyzed in
1411 detail, because pre-requisites for attack are considered unlikely. Namely
1412 multiple clients have to choose the curve in question and the server has to
1413 share the private key among them, neither of which is default behaviour.
1414 Even then only clients that chose the curve will be affected.
1416 This issue was publicly reported as transient failures and was not
1417 initially recognized as a security issue. Thanks to Richard Morgan for
1418 providing reproducible case.
1422 *) Removed automatic addition of RPATH in shared libraries and executables,
1423 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
1426 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
1428 *) Fix Use After Free for large message sizes
1430 The patch applied to address CVE-2016-6307 resulted in an issue where if a
1431 message larger than approx 16k is received then the underlying buffer to
1432 store the incoming message is reallocated and moved. Unfortunately a
1433 dangling pointer to the old location is left which results in an attempt to
1434 write to the previously freed location. This is likely to result in a
1435 crash, however it could potentially lead to execution of arbitrary code.
1437 This issue only affects OpenSSL 1.1.0a.
1439 This issue was reported to OpenSSL by Robert Święcki.
1443 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
1445 *) OCSP Status Request extension unbounded memory growth
1447 A malicious client can send an excessively large OCSP Status Request
1448 extension. If that client continually requests renegotiation, sending a
1449 large OCSP Status Request extension each time, then there will be unbounded
1450 memory growth on the server. This will eventually lead to a Denial Of
1451 Service attack through memory exhaustion. Servers with a default
1452 configuration are vulnerable even if they do not support OCSP. Builds using
1453 the "no-ocsp" build time option are not affected.
1455 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1459 *) SSL_peek() hang on empty record
1461 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
1462 sends an empty record. This could be exploited by a malicious peer in a
1463 Denial Of Service attack.
1465 This issue was reported to OpenSSL by Alex Gaynor.
1469 *) Excessive allocation of memory in tls_get_message_header() and
1470 dtls1_preprocess_fragment()
1472 A (D)TLS message includes 3 bytes for its length in the header for the
1473 message. This would allow for messages up to 16Mb in length. Messages of
1474 this length are excessive and OpenSSL includes a check to ensure that a
1475 peer is sending reasonably sized messages in order to avoid too much memory
1476 being consumed to service a connection. A flaw in the logic of version
1477 1.1.0 means that memory for the message is allocated too early, prior to
1478 the excessive message length check. Due to way memory is allocated in
1479 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
1480 to service a connection. This could lead to a Denial of Service through
1481 memory exhaustion. However, the excessive message length check still takes
1482 place, and this would cause the connection to immediately fail. Assuming
1483 that the application calls SSL_free() on the failed connection in a timely
1484 manner then the 21Mb of allocated memory will then be immediately freed
1485 again. Therefore the excessive memory allocation will be transitory in
1486 nature. This then means that there is only a security impact if:
1488 1) The application does not call SSL_free() in a timely manner in the event
1489 that the connection fails
1491 2) The application is working in a constrained environment where there is
1492 very little free memory
1494 3) The attacker initiates multiple connection attempts such that there are
1495 multiple connections in a state where memory has been allocated for the
1496 connection; SSL_free() has not yet been called; and there is insufficient
1497 memory to service the multiple requests.
1499 Except in the instance of (1) above any Denial Of Service is likely to be
1500 transitory because as soon as the connection fails the memory is
1501 subsequently freed again in the SSL_free() call. However there is an
1502 increased risk during this period of application crashes due to the lack of
1503 memory - which would then mean a more serious Denial of Service.
1505 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1506 (CVE-2016-6307 and CVE-2016-6308)
1509 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
1510 had to be removed. Primary reason is that vendor assembler can't
1511 assemble our modules with -KPIC flag. As result it, assembly
1512 support, was not even available as option. But its lack means
1513 lack of side-channel resistant code, which is incompatible with
1514 security by todays standards. Fortunately gcc is readily available
1515 prepackaged option, which we firmly point at...
1518 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
1520 *) Windows command-line tool supports UTF-8 opt-in option for arguments
1521 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
1522 (to any value) allows Windows user to access PKCS#12 file generated
1523 with Windows CryptoAPI and protected with non-ASCII password, as well
1524 as files generated under UTF-8 locale on Linux also protected with
1528 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
1529 have been disabled by default and removed from DEFAULT, just like RC4.
1530 See the RC4 item below to re-enable both.
1533 *) The method for finding the storage location for the Windows RAND seed file
1534 has changed. First we check %RANDFILE%. If that is not set then we check
1535 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
1536 all else fails we fall back to C:\.
1539 *) The EVP_EncryptUpdate() function has had its return type changed from void
1540 to int. A return of 0 indicates and error while a return of 1 indicates
1544 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
1545 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
1546 off the constant time implementation for RSA, DSA and DH have been made
1547 no-ops and deprecated.
1550 *) Windows RAND implementation was simplified to only get entropy by
1551 calling CryptGenRandom(). Various other RAND-related tickets
1553 [Joseph Wylie Yandle, Rich Salz]
1555 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
1556 and OPENSSL_LH_, respectively. The old names are available
1557 with API compatibility. They new names are now completely documented.
1560 *) Unify TYPE_up_ref(obj) methods signature.
1561 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
1562 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
1563 int (instead of void) like all others TYPE_up_ref() methods.
1564 So now these methods also check the return value of CRYPTO_atomic_add(),
1565 and the validity of object reference counter.
1566 [fdasilvayy@gmail.com]
1568 *) With Windows Visual Studio builds, the .pdb files are installed
1569 alongside the installed libraries and executables. For a static
1570 library installation, ossl_static.pdb is the associate compiler
1571 generated .pdb file to be used when linking programs.
1574 *) Remove openssl.spec. Packaging files belong with the packagers.
1577 *) Automatic Darwin/OSX configuration has had a refresh, it will now
1578 recognise x86_64 architectures automatically. You can still decide
1579 to build for a different bitness with the environment variable
1580 KERNEL_BITS (can be 32 or 64), for example:
1582 KERNEL_BITS=32 ./config
1586 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
1587 256 bit AES and HMAC with SHA256.
1590 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
1593 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
1596 *) To enable users to have their own config files and build file templates,
1597 Configure looks in the directory indicated by the environment variable
1598 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
1599 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
1600 name and is used as is.
1603 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
1604 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
1605 X509_CERT_FILE_CTX was removed.
1608 *) "shared" builds are now the default. To create only static libraries use
1609 the "no-shared" Configure option.
1612 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
1613 All of these option have not worked for some while and are fundamental
1617 *) Make various cleanup routines no-ops and mark them as deprecated. Most
1618 global cleanup functions are no longer required because they are handled
1619 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
1620 Explicitly de-initing can cause problems (e.g. where a library that uses
1621 OpenSSL de-inits, but an application is still using it). The affected
1622 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
1623 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
1624 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
1625 COMP_zlib_cleanup().
1628 *) --strict-warnings no longer enables runtime debugging options
1629 such as REF_DEBUG. Instead, debug options are automatically
1630 enabled with '--debug' builds.
1631 [Andy Polyakov, Emilia Käsper]
1633 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
1634 have been moved out of the public header files. New functions for managing
1635 these have been added.
1638 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
1639 objects have been moved out of the public header files. New
1640 functions for managing these have been added.
1643 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
1644 have been moved out of the public header files. New functions for managing
1645 these have been added.
1648 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
1649 moved out of the public header files. New functions for managing these
1653 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
1656 *) Removed the mk1mf build scripts.
1659 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
1660 it is always safe to #include a header now.
1663 *) Removed the aged BC-32 config and all its supporting scripts
1666 *) Removed support for Ultrix, Netware, and OS/2.
1669 *) Add support for HKDF.
1670 [Alessandro Ghedini]
1672 *) Add support for blake2b and blake2s
1675 *) Added support for "pipelining". Ciphers that have the
1676 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
1677 encryptions/decryptions simultaneously. There are currently no built-in
1678 ciphers with this property but the expectation is that engines will be able
1679 to offer it to significantly improve throughput. Support has been extended
1680 into libssl so that multiple records for a single connection can be
1681 processed in one go (for >=TLS 1.1).
1684 *) Added the AFALG engine. This is an async capable engine which is able to
1685 offload work to the Linux kernel. In this initial version it only supports
1686 AES128-CBC. The kernel must be version 4.1.0 or greater.
1689 *) OpenSSL now uses a new threading API. It is no longer necessary to
1690 set locking callbacks to use OpenSSL in a multi-threaded environment. There
1691 are two supported threading models: pthreads and windows threads. It is
1692 also possible to configure OpenSSL at compile time for "no-threads". The
1693 old threading API should no longer be used. The functions have been
1694 replaced with "no-op" compatibility macros.
1695 [Alessandro Ghedini, Matt Caswell]
1697 *) Modify behavior of ALPN to invoke callback after SNI/servername
1698 callback, such that updates to the SSL_CTX affect ALPN.
1701 *) Add SSL_CIPHER queries for authentication and key-exchange.
1704 *) Changes to the DEFAULT cipherlist:
1705 - Prefer (EC)DHE handshakes over plain RSA.
1706 - Prefer AEAD ciphers over legacy ciphers.
1707 - Prefer ECDSA over RSA when both certificates are available.
1708 - Prefer TLSv1.2 ciphers/PRF.
1709 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
1713 *) Change the ECC default curve list to be this, in order: x25519,
1714 secp256r1, secp521r1, secp384r1.
1717 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
1718 disabled by default. They can be re-enabled using the
1719 enable-weak-ssl-ciphers option to Configure.
1722 *) If the server has ALPN configured, but supports no protocols that the
1723 client advertises, send a fatal "no_application_protocol" alert.
1724 This behaviour is SHALL in RFC 7301, though it isn't universally
1725 implemented by other servers.
1728 *) Add X25519 support.
1729 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
1730 for public and private key encoding using the format documented in
1731 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
1732 key generation and key derivation.
1734 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
1738 *) Deprecate SRP_VBASE_get_by_user.
1739 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1740 In order to fix an unavoidable memory leak (CVE-2016-0798),
1741 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
1742 seed, even if the seed is configured.
1744 Users should use SRP_VBASE_get1_by_user instead. Note that in
1745 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1746 also that even though configuring the SRP seed attempts to hide
1747 invalid usernames by continuing the handshake with fake
1748 credentials, this behaviour is not constant time and no strong
1749 guarantees are made that the handshake is indistinguishable from
1750 that of a valid user.
1753 *) Configuration change; it's now possible to build dynamic engines
1754 without having to build shared libraries and vice versa. This
1755 only applies to the engines in engines/, those in crypto/engine/
1756 will always be built into libcrypto (i.e. "static").
1758 Building dynamic engines is enabled by default; to disable, use
1759 the configuration option "disable-dynamic-engine".
1761 The only requirements for building dynamic engines are the
1762 presence of the DSO module and building with position independent
1763 code, so they will also automatically be disabled if configuring
1764 with "disable-dso" or "disable-pic".
1766 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
1767 are also taken away from openssl/opensslconf.h, as they are
1771 *) Configuration change; if there is a known flag to compile
1772 position independent code, it will always be applied on the
1773 libcrypto and libssl object files, and never on the application
1774 object files. This means other libraries that use routines from
1775 libcrypto / libssl can be made into shared libraries regardless
1776 of how OpenSSL was configured.
1778 If this isn't desirable, the configuration options "disable-pic"
1779 or "no-pic" can be used to disable the use of PIC. This will
1780 also disable building shared libraries and dynamic engines.
1783 *) Removed JPAKE code. It was experimental and has no wide use.
1786 *) The INSTALL_PREFIX Makefile variable has been renamed to
1787 DESTDIR. That makes for less confusion on what this variable
1788 is for. Also, the configuration option --install_prefix is
1792 *) Heartbeat for TLS has been removed and is disabled by default
1793 for DTLS; configure with enable-heartbeats. Code that uses the
1794 old #define's might need to be updated.
1795 [Emilia Käsper, Rich Salz]
1797 *) Rename REF_CHECK to REF_DEBUG.
1800 *) New "unified" build system
1802 The "unified" build system is aimed to be a common system for all
1803 platforms we support. With it comes new support for VMS.
1805 This system builds supports building in a different directory tree
1806 than the source tree. It produces one Makefile (for unix family
1807 or lookalikes), or one descrip.mms (for VMS).
1809 The source of information to make the Makefile / descrip.mms is
1810 small files called 'build.info', holding the necessary
1811 information for each directory with source to compile, and a
1812 template in Configurations, like unix-Makefile.tmpl or
1815 With this change, the library names were also renamed on Windows
1816 and on VMS. They now have names that are closer to the standard
1817 on Unix, and include the major version number, and in certain
1818 cases, the architecture they are built for. See "Notes on shared
1819 libraries" in INSTALL.
1821 We rely heavily on the perl module Text::Template.
1824 *) Added support for auto-initialisation and de-initialisation of the library.
1825 OpenSSL no longer requires explicit init or deinit routines to be called,
1826 except in certain circumstances. See the OPENSSL_init_crypto() and
1827 OPENSSL_init_ssl() man pages for further information.
1830 *) The arguments to the DTLSv1_listen function have changed. Specifically the
1831 "peer" argument is now expected to be a BIO_ADDR object.
1833 *) Rewrite of BIO networking library. The BIO library lacked consistent
1834 support of IPv6, and adding it required some more extensive
1835 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
1836 which hold all types of addresses and chains of address information.
1837 It also introduces a new API, with functions like BIO_socket,
1838 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
1839 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
1840 have been adapted accordingly.
1843 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
1847 *) CRIME protection: disable compression by default, even if OpenSSL is
1848 compiled with zlib enabled. Applications can still enable compression
1849 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
1850 using the SSL_CONF library to configure compression.
1853 *) The signature of the session callback configured with
1854 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
1855 was explicitly marked as 'const unsigned char*' instead of
1859 *) Always DPURIFY. Remove the use of uninitialized memory in the
1860 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
1863 *) Removed many obsolete configuration items, including
1864 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
1865 MD2_CHAR, MD2_INT, MD2_LONG
1867 IDEA_SHORT, IDEA_LONG
1868 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
1869 [Rich Salz, with advice from Andy Polyakov]
1871 *) Many BN internals have been moved to an internal header file.
1872 [Rich Salz with help from Andy Polyakov]
1874 *) Configuration and writing out the results from it has changed.
1875 Files such as Makefile include/openssl/opensslconf.h and are now
1876 produced through general templates, such as Makefile.in and
1877 crypto/opensslconf.h.in and some help from the perl module
1880 Also, the center of configuration information is no longer
1881 Makefile. Instead, Configure produces a perl module in
1882 configdata.pm which holds most of the config data (in the hash
1883 table %config), the target data that comes from the target
1884 configuration in one of the Configurations/*.conf files (in
1888 *) To clarify their intended purposes, the Configure options
1889 --prefix and --openssldir change their semantics, and become more
1890 straightforward and less interdependent.
1892 --prefix shall be used exclusively to give the location INSTALLTOP
1893 where programs, scripts, libraries, include files and manuals are
1894 going to be installed. The default is now /usr/local.
1896 --openssldir shall be used exclusively to give the default
1897 location OPENSSLDIR where certificates, private keys, CRLs are
1898 managed. This is also where the default openssl.cnf gets
1900 If the directory given with this option is a relative path, the
1901 values of both the --prefix value and the --openssldir value will
1902 be combined to become OPENSSLDIR.
1903 The default for --openssldir is INSTALLTOP/ssl.
1905 Anyone who uses --openssldir to specify where OpenSSL is to be
1906 installed MUST change to use --prefix instead.
1909 *) The GOST engine was out of date and therefore it has been removed. An up
1910 to date GOST engine is now being maintained in an external repository.
1911 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
1912 support for GOST ciphersuites (these are only activated if a GOST engine
1916 *) EGD is no longer supported by default; use enable-egd when
1918 [Ben Kaduk and Rich Salz]
1920 *) The distribution now has Makefile.in files, which are used to
1921 create Makefile's when Configure is run. *Configure must be run
1922 before trying to build now.*
1925 *) The return value for SSL_CIPHER_description() for error conditions
1929 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
1931 Obtaining and performing DNSSEC validation of TLSA records is
1932 the application's responsibility. The application provides
1933 the TLSA records of its choice to OpenSSL, and these are then
1934 used to authenticate the peer.
1936 The TLSA records need not even come from DNS. They can, for
1937 example, be used to implement local end-entity certificate or
1938 trust-anchor "pinning", where the "pin" data takes the form
1939 of TLSA records, which can augment or replace verification
1940 based on the usual WebPKI public certification authorities.
1943 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
1944 continues to support deprecated interfaces in default builds.
1945 However, applications are strongly advised to compile their
1946 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
1947 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
1948 or the 1.1.0 releases.
1950 In environments in which all applications have been ported to
1951 not use any deprecated interfaces OpenSSL's Configure script
1952 should be used with the --api=1.1.0 option to entirely remove
1953 support for the deprecated features from the library and
1954 unconditionally disable them in the installed headers.
1955 Essentially the same effect can be achieved with the "no-deprecated"
1956 argument to Configure, except that this will always restrict
1957 the build to just the latest API, rather than a fixed API
1960 As applications are ported to future revisions of the API,
1961 they should update their compile-time OPENSSL_API_COMPAT define
1962 accordingly, but in most cases should be able to continue to
1963 compile with later releases.
1965 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
1966 0x10000000L and 0x00908000L, respectively. However those
1967 versions did not support the OPENSSL_API_COMPAT feature, and
1968 so applications are not typically tested for explicit support
1969 of just the undeprecated features of either release.
1972 *) Add support for setting the minimum and maximum supported protocol.
1973 It can bet set via the SSL_set_min_proto_version() and
1974 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
1975 MaxProtocol. It's recommended to use the new APIs to disable
1976 protocols instead of disabling individual protocols using
1977 SSL_set_options() or SSL_CONF's Protocol. This change also
1978 removes support for disabling TLS 1.2 in the OpenSSL TLS
1979 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
1982 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
1985 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
1986 and integrates ECDSA and ECDH functionality into EC. Implementations can
1987 now redirect key generation and no longer need to convert to or from
1990 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
1991 include the ec.h header file instead.
1994 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
1995 ciphers who are no longer supported and drops support the ephemeral RSA key
1996 exchange. The LOW ciphers currently doesn't have any ciphers in it.
1999 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
2000 opaque. For HMAC_CTX, the following constructors and destructors
2003 HMAC_CTX *HMAC_CTX_new(void);
2004 void HMAC_CTX_free(HMAC_CTX *ctx);
2006 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
2007 destroy such methods has been added. See EVP_MD_meth_new(3) and
2008 EVP_CIPHER_meth_new(3) for documentation.
2011 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
2012 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
2013 EVP_MD_CTX_reset() should be called instead to reinitialise
2014 an already created structure.
2015 2) For consistency with the majority of our object creators and
2016 destructors, EVP_MD_CTX_(create|destroy) were renamed to
2017 EVP_MD_CTX_(new|free). The old names are retained as macros
2018 for deprecated builds.
2021 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
2022 cryptographic operations to be performed asynchronously as long as an
2023 asynchronous capable engine is used. See the ASYNC_start_job() man page for
2024 further details. Libssl has also had this capability integrated with the
2025 introduction of the new mode SSL_MODE_ASYNC and associated error
2026 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
2027 pages. This work was developed in partnership with Intel Corp.
2030 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
2031 always enabled now. If you want to disable the support you should
2032 exclude it using the list of supported ciphers. This also means that the
2033 "-no_ecdhe" option has been removed from s_server.
2036 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
2037 SSL_{CTX_}set1_curves() which can set a list.
2040 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
2041 curve you want to support using SSL_{CTX_}set1_curves().
2044 *) State machine rewrite. The state machine code has been significantly
2045 refactored in order to remove much duplication of code and solve issues
2046 with the old code (see ssl/statem/README for further details). This change
2047 does have some associated API changes. Notably the SSL_state() function
2048 has been removed and replaced by SSL_get_state which now returns an
2049 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
2050 altogether. The previous handshake states defined in ssl.h and ssl3.h have
2054 *) All instances of the string "ssleay" in the public API were replaced
2055 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
2056 Some error codes related to internal RSA_eay API's were renamed.
2059 *) The demo files in crypto/threads were moved to demo/threads.
2062 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
2064 [Matt Caswell, Rich Salz]
2066 *) New ASN.1 embed macro.
2068 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
2069 structure is not allocated: it is part of the parent. That is instead of
2077 This reduces memory fragmentation and make it impossible to accidentally
2078 set a mandatory field to NULL.
2080 This currently only works for some fields specifically a SEQUENCE, CHOICE,
2081 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
2082 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
2086 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
2089 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
2090 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
2091 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
2092 DES and RC4 ciphersuites.
2095 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2096 This changes the decoding behaviour for some invalid messages,
2097 though the change is mostly in the more lenient direction, and
2098 legacy behaviour is preserved as much as possible.
2101 *) Fix no-stdio build.
2102 [ David Woodhouse <David.Woodhouse@intel.com> and also
2103 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
2105 *) New testing framework
2106 The testing framework has been largely rewritten and is now using
2107 perl and the perl modules Test::Harness and an extended variant of
2108 Test::More called OpenSSL::Test to do its work. All test scripts in
2109 test/ have been rewritten into test recipes, and all direct calls to
2110 executables in test/Makefile have become individual recipes using the
2111 simplified testing OpenSSL::Test::Simple.
2113 For documentation on our testing modules, do:
2115 perldoc test/testlib/OpenSSL/Test/Simple.pm
2116 perldoc test/testlib/OpenSSL/Test.pm
2120 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
2121 are used; the latter aborts on memory leaks (usually checked on exit).
2122 Some undocumented "set malloc, etc., hooks" functions were removed
2123 and others were changed. All are now documented.
2126 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2128 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2130 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
2131 from RFC4279, RFC4785, RFC5487, RFC5489.
2133 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
2134 original RSA_PSK patch.
2137 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
2138 era flag was never set throughout the codebase (only read). Also removed
2139 SSL3_FLAGS_POP_BUFFER which was only used if
2140 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
2143 *) Changed the default name options in the "ca", "crl", "req" and "x509"
2144 to be "oneline" instead of "compat".
2147 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
2148 not aware of clients that still exhibit this bug, and the workaround
2149 hasn't been working properly for a while.
2152 *) The return type of BIO_number_read() and BIO_number_written() as well as
2153 the corresponding num_read and num_write members in the BIO structure has
2154 changed from unsigned long to uint64_t. On platforms where an unsigned
2155 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
2159 *) Given the pervasive nature of TLS extensions it is inadvisable to run
2160 OpenSSL without support for them. It also means that maintaining
2161 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
2162 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
2165 *) Removed support for the two export grade static DH ciphersuites
2166 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
2167 were newly added (along with a number of other static DH ciphersuites) to
2168 1.0.2. However the two export ones have *never* worked since they were
2169 introduced. It seems strange in any case to be adding new export
2170 ciphersuites, and given "logjam" it also does not seem correct to fix them.
2173 *) Version negotiation has been rewritten. In particular SSLv23_method(),
2174 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
2175 and turned into macros which simply call the new preferred function names
2176 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
2177 should use the new names instead. Also as part of this change the ssl23.h
2178 header file has been removed.
2181 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
2182 code and the associated standard is no longer considered fit-for-purpose.
2185 *) RT2547 was closed. When generating a private key, try to make the
2186 output file readable only by the owner. This behavior change might
2187 be noticeable when interacting with other software.
2189 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
2193 *) Added HTTP GET support to the ocsp command.
2196 *) Changed default digest for the dgst and enc commands from MD5 to
2200 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
2203 *) Added support for TLS extended master secret from
2204 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
2205 initial patch which was a great help during development.
2208 *) All libssl internal structures have been removed from the public header
2209 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
2210 now redundant). Users should not attempt to access internal structures
2211 directly. Instead they should use the provided API functions.
2214 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
2215 Access to deprecated functions can be re-enabled by running config with
2216 "enable-deprecated". In addition applications wishing to use deprecated
2217 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
2218 will, by default, disable some transitive includes that previously existed
2219 in the header files (e.g. ec.h will no longer, by default, include bn.h)
2222 *) Added support for OCB mode. OpenSSL has been granted a patent license
2223 compatible with the OpenSSL license for use of OCB. Details are available
2224 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
2225 for OCB can be removed by calling config with no-ocb.
2228 *) SSLv2 support has been removed. It still supports receiving a SSLv2
2229 compatible client hello.
2232 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
2233 done while fixing the error code for the key-too-small case.
2234 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
2236 *) CA.sh has been removed; use CA.pl instead.
2239 *) Removed old DES API.
2242 *) Remove various unsupported platforms:
2248 Sinix/ReliantUNIX RM400
2253 16-bit platforms such as WIN16
2256 *) Clean up OPENSSL_NO_xxx #define's
2257 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
2258 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
2259 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
2260 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
2261 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
2262 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
2263 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
2264 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
2265 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
2266 Remove MS_STATIC; it's a relic from platforms <32 bits.
2269 *) Cleaned up dead code
2270 Remove all but one '#ifdef undef' which is to be looked at.
2273 *) Clean up calling of xxx_free routines.
2274 Just like free(), fix most of the xxx_free routines to accept
2275 NULL. Remove the non-null checks from callers. Save much code.
2278 *) Add secure heap for storage of private keys (when possible).
2279 Add BIO_s_secmem(), CBIGNUM, etc.
2280 Contributed by Akamai Technologies under our Corporate CLA.
2283 *) Experimental support for a new, fast, unbiased prime candidate generator,
2284 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
2285 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
2287 *) New output format NSS in the sess_id command line tool. This allows
2288 exporting the session id and the master key in NSS keylog format.
2289 [Martin Kaiser <martin@kaiser.cx>]
2291 *) Harmonize version and its documentation. -f flag is used to display
2293 [mancha <mancha1@zoho.com>]
2295 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
2296 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
2297 [mancha <mancha1@zoho.com>]
2299 *) Fix some double frees. These are not thought to be exploitable.
2300 [mancha <mancha1@zoho.com>]
2302 *) A missing bounds check in the handling of the TLS heartbeat extension
2303 can be used to reveal up to 64k of memory to a connected client or
2306 Thanks for Neel Mehta of Google Security for discovering this bug and to
2307 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
2308 preparing the fix (CVE-2014-0160)
2309 [Adam Langley, Bodo Moeller]
2311 *) Fix for the attack described in the paper "Recovering OpenSSL
2312 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
2313 by Yuval Yarom and Naomi Benger. Details can be obtained from:
2314 http://eprint.iacr.org/2014/140
2316 Thanks to Yuval Yarom and Naomi Benger for discovering this
2317 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
2318 [Yuval Yarom and Naomi Benger]
2320 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2321 this fixes a limitation in previous versions of OpenSSL.
2324 *) Experimental encrypt-then-mac support.
2326 Experimental support for encrypt then mac from
2327 draft-gutmann-tls-encrypt-then-mac-02.txt
2329 To enable it set the appropriate extension number (0x42 for the test
2330 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
2332 For non-compliant peers (i.e. just about everything) this should have no
2335 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
2339 *) Add EVP support for key wrapping algorithms, to avoid problems with
2340 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2341 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2342 algorithms and include tests cases.
2345 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
2349 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2350 MGF1 digest and OAEP label.
2353 *) Make openssl verify return errors.
2354 [Chris Palmer <palmer@google.com> and Ben Laurie]
2356 *) New function ASN1_TIME_diff to calculate the difference between two
2357 ASN1_TIME structures or one structure and the current time.
2360 *) Update fips_test_suite to support multiple command line options. New
2361 test to induce all self test errors in sequence and check expected
2365 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
2366 sign or verify all in one operation.
2369 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
2370 test programs and fips_test_suite. Includes functionality to parse
2371 the minimal script output of fipsalgest.pl directly.
2374 *) Add authorisation parameter to FIPS_module_mode_set().
2377 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
2380 *) Use separate DRBG fields for internal and external flags. New function
2381 FIPS_drbg_health_check() to perform on demand health checking. Add
2382 generation tests to fips_test_suite with reduced health check interval to
2383 demonstrate periodic health checking. Add "nodh" option to
2384 fips_test_suite to skip very slow DH test.
2387 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
2391 *) More extensive health check for DRBG checking many more failure modes.
2392 New function FIPS_selftest_drbg_all() to handle every possible DRBG
2393 combination: call this in fips_test_suite.
2396 *) Add support for canonical generation of DSA parameter 'g'. See
2399 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
2400 POST to handle HMAC cases.
2403 *) Add functions FIPS_module_version() and FIPS_module_version_text()
2404 to return numerical and string versions of the FIPS module number.
2407 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
2408 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
2409 outside the validated module in the FIPS capable OpenSSL.
2412 *) Minor change to DRBG entropy callback semantics. In some cases
2413 there is no multiple of the block length between min_len and
2414 max_len. Allow the callback to return more than max_len bytes
2415 of entropy but discard any extra: it is the callback's responsibility
2416 to ensure that the extra data discarded does not impact the
2417 requested amount of entropy.
2420 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
2421 information in FIPS186-3, SP800-57 and SP800-131A.
2424 *) CCM support via EVP. Interface is very similar to GCM case except we
2425 must supply all data in one chunk (i.e. no update, final) and the
2426 message length must be supplied if AAD is used. Add algorithm test
2430 *) Initial version of POST overhaul. Add POST callback to allow the status
2431 of POST to be monitored and/or failures induced. Modify fips_test_suite
2432 to use callback. Always run all selftests even if one fails.
2435 *) XTS support including algorithm test driver in the fips_gcmtest program.
2436 Note: this does increase the maximum key length from 32 to 64 bytes but
2437 there should be no binary compatibility issues as existing applications
2438 will never use XTS mode.
2441 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
2442 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
2443 performs algorithm blocking for unapproved PRNG types. Also do not
2444 set PRNG type in FIPS_mode_set(): leave this to the application.
2445 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
2446 the standard OpenSSL PRNG: set additional data to a date time vector.
2449 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
2450 This shouldn't present any incompatibility problems because applications
2451 shouldn't be using these directly and any that are will need to rethink
2452 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
2455 *) Extensive self tests and health checking required by SP800-90 DRBG.
2456 Remove strength parameter from FIPS_drbg_instantiate and always
2457 instantiate at maximum supported strength.
2460 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
2463 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
2466 *) New function DH_compute_key_padded() to compute a DH key and pad with
2467 leading zeroes if needed: this complies with SP800-56A et al.
2470 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
2471 anything, incomplete, subject to change and largely untested at present.
2474 *) Modify fipscanisteronly build option to only build the necessary object
2475 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
2478 *) Add experimental option FIPSSYMS to give all symbols in
2479 fipscanister.o and FIPS or fips prefix. This will avoid
2480 conflicts with future versions of OpenSSL. Add perl script
2481 util/fipsas.pl to preprocess assembly language source files
2482 and rename any affected symbols.
2485 *) Add selftest checks and algorithm block of non-fips algorithms in
2486 FIPS mode. Remove DES2 from selftests.
2489 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
2490 return internal method without any ENGINE dependencies. Add new
2491 tiny fips sign and verify functions.
2494 *) New build option no-ec2m to disable characteristic 2 code.
2497 *) New build option "fipscanisteronly". This only builds fipscanister.o
2498 and (currently) associated fips utilities. Uses the file Makefile.fips
2499 instead of Makefile.org as the prototype.
2502 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
2503 Update fips_gcmtest to use IV generator.
2506 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
2507 setting output buffer to NULL. The *Final function must be
2508 called although it will not retrieve any additional data. The tag
2509 can be set or retrieved with a ctrl. The IV length is by default 12
2510 bytes (96 bits) but can be set to an alternative value. If the IV
2511 length exceeds the maximum IV length (currently 16 bytes) it cannot be
2515 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
2516 underlying do_cipher function handles all cipher semantics itself
2517 including padding and finalisation. This is useful if (for example)
2518 an ENGINE cipher handles block padding itself. The behaviour of
2519 do_cipher is subtly changed if this flag is set: the return value
2520 is the number of characters written to the output buffer (zero is
2521 no longer an error code) or a negative error code. Also if the
2522 input buffer is NULL and length 0 finalisation should be performed.
2525 *) If a candidate issuer certificate is already part of the constructed
2526 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
2529 *) Improve forward-security support: add functions
2531 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
2532 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
2534 for use by SSL/TLS servers; the callback function will be called whenever a
2535 new session is created, and gets to decide whether the session may be
2536 cached to make it resumable (return 0) or not (return 1). (As by the
2537 SSL/TLS protocol specifications, the session_id sent by the server will be
2538 empty to indicate that the session is not resumable; also, the server will
2539 not generate RFC 4507 (RFC 5077) session tickets.)
2541 A simple reasonable callback implementation is to return is_forward_secure.
2542 This parameter will be set to 1 or 0 depending on the ciphersuite selected
2543 by the SSL/TLS server library, indicating whether it can provide forward
2545 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2547 *) New -verify_name option in command line utilities to set verification
2551 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
2552 Add CMAC pkey methods.
2555 *) Experimental renegotiation in s_server -www mode. If the client
2556 browses /reneg connection is renegotiated. If /renegcert it is
2557 renegotiated requesting a certificate.
2560 *) Add an "external" session cache for debugging purposes to s_server. This
2561 should help trace issues which normally are only apparent in deployed
2562 multi-process servers.
2565 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
2566 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
2567 BIO_set_cipher() and some obscure PEM functions were changed so they
2568 can now return an error. The RAND changes required a change to the
2569 RAND_METHOD structure.
2572 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
2573 a gcc attribute to warn if the result of a function is ignored. This
2574 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
2575 whose return value is often ignored.
2578 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
2579 These allow SCTs (signed certificate timestamps) to be requested and
2580 validated when establishing a connection.
2581 [Rob Percival <robpercival@google.com>]
2583 Changes between 1.0.2g and 1.0.2h [3 May 2016]
2585 *) Prevent padding oracle in AES-NI CBC MAC check
2587 A MITM attacker can use a padding oracle attack to decrypt traffic
2588 when the connection uses an AES CBC cipher and the server support
2591 This issue was introduced as part of the fix for Lucky 13 padding
2592 attack (CVE-2013-0169). The padding check was rewritten to be in
2593 constant time by making sure that always the same bytes are read and
2594 compared against either the MAC or padding bytes. But it no longer
2595 checked that there was enough data to have both the MAC and padding
2598 This issue was reported by Juraj Somorovsky using TLS-Attacker.
2602 *) Fix EVP_EncodeUpdate overflow
2604 An overflow can occur in the EVP_EncodeUpdate() function which is used for
2605 Base64 encoding of binary data. If an attacker is able to supply very large
2606 amounts of input data then a length check can overflow resulting in a heap
2609 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
2610 the PEM_write_bio* family of functions. These are mainly used within the
2611 OpenSSL command line applications, so any application which processes data
2612 from an untrusted source and outputs it as a PEM file should be considered
2613 vulnerable to this issue. User applications that call these APIs directly
2614 with large amounts of untrusted data may also be vulnerable.
2616 This issue was reported by Guido Vranken.
2620 *) Fix EVP_EncryptUpdate overflow
2622 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
2623 is able to supply very large amounts of input data after a previous call to
2624 EVP_EncryptUpdate() with a partial block then a length check can overflow
2625 resulting in a heap corruption. Following an analysis of all OpenSSL
2626 internal usage of the EVP_EncryptUpdate() function all usage is one of two
2627 forms. The first form is where the EVP_EncryptUpdate() call is known to be
2628 the first called function after an EVP_EncryptInit(), and therefore that
2629 specific call must be safe. The second form is where the length passed to
2630 EVP_EncryptUpdate() can be seen from the code to be some small value and
2631 therefore there is no possibility of an overflow. Since all instances are
2632 one of these two forms, it is believed that there can be no overflows in
2633 internal code due to this problem. It should be noted that
2634 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
2635 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
2636 of these calls have also been analysed too and it is believed there are no
2637 instances in internal usage where an overflow could occur.
2639 This issue was reported by Guido Vranken.
2643 *) Prevent ASN.1 BIO excessive memory allocation
2645 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
2646 a short invalid encoding can cause allocation of large amounts of memory
2647 potentially consuming excessive resources or exhausting memory.
2649 Any application parsing untrusted data through d2i BIO functions is
2650 affected. The memory based functions such as d2i_X509() are *not* affected.
2651 Since the memory based functions are used by the TLS library, TLS
2652 applications are not affected.
2654 This issue was reported by Brian Carpenter.
2660 ASN1 Strings that are over 1024 bytes can cause an overread in applications
2661 using the X509_NAME_oneline() function on EBCDIC systems. This could result
2662 in arbitrary stack data being returned in the buffer.
2664 This issue was reported by Guido Vranken.
2668 *) Modify behavior of ALPN to invoke callback after SNI/servername
2669 callback, such that updates to the SSL_CTX affect ALPN.
2672 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
2676 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
2677 methods are enabled and ssl2 is disabled the methods return NULL.
2680 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
2682 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
2683 Builds that are not configured with "enable-weak-ssl-ciphers" will not
2684 provide any "EXPORT" or "LOW" strength ciphers.
2687 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
2688 is by default disabled at build-time. Builds that are not configured with
2689 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
2690 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
2691 will need to explicitly call either of:
2693 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
2695 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
2697 as appropriate. Even if either of those is used, or the application
2698 explicitly uses the version-specific SSLv2_method() or its client and
2699 server variants, SSLv2 ciphers vulnerable to exhaustive search key
2700 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
2701 ciphers, and SSLv2 56-bit DES are no longer available.
2705 *) Fix a double-free in DSA code
2707 A double free bug was discovered when OpenSSL parses malformed DSA private
2708 keys and could lead to a DoS attack or memory corruption for applications
2709 that receive DSA private keys from untrusted sources. This scenario is
2712 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
2717 *) Disable SRP fake user seed to address a server memory leak.
2719 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
2721 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
2722 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
2723 was changed to ignore the "fake user" SRP seed, even if the seed
2726 Users should use SRP_VBASE_get1_by_user instead. Note that in
2727 SRP_VBASE_get1_by_user, caller must free the returned value. Note
2728 also that even though configuring the SRP seed attempts to hide
2729 invalid usernames by continuing the handshake with fake
2730 credentials, this behaviour is not constant time and no strong
2731 guarantees are made that the handshake is indistinguishable from
2732 that of a valid user.
2736 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
2738 In the BN_hex2bn function the number of hex digits is calculated using an
2739 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
2740 large values of |i| this can result in |bn_expand| not allocating any
2741 memory because |i * 4| is negative. This can leave the internal BIGNUM data
2742 field as NULL leading to a subsequent NULL ptr deref. For very large values
2743 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
2744 In this case memory is allocated to the internal BIGNUM data field, but it
2745 is insufficiently sized leading to heap corruption. A similar issue exists
2746 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
2747 is ever called by user applications with very large untrusted hex/dec data.
2748 This is anticipated to be a rare occurrence.
2750 All OpenSSL internal usage of these functions use data that is not expected
2751 to be untrusted, e.g. config file data or application command line
2752 arguments. If user developed applications generate config file data based
2753 on untrusted data then it is possible that this could also lead to security
2754 consequences. This is also anticipated to be rare.
2756 This issue was reported to OpenSSL by Guido Vranken.
2760 *) Fix memory issues in BIO_*printf functions
2762 The internal |fmtstr| function used in processing a "%s" format string in
2763 the BIO_*printf functions could overflow while calculating the length of a
2764 string and cause an OOB read when printing very long strings.
2766 Additionally the internal |doapr_outch| function can attempt to write to an
2767 OOB memory location (at an offset from the NULL pointer) in the event of a
2768 memory allocation failure. In 1.0.2 and below this could be caused where
2769 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
2770 could be in processing a very long "%s" format string. Memory leaks can
2773 The first issue may mask the second issue dependent on compiler behaviour.
2774 These problems could enable attacks where large amounts of untrusted data
2775 is passed to the BIO_*printf functions. If applications use these functions
2776 in this way then they could be vulnerable. OpenSSL itself uses these
2777 functions when printing out human-readable dumps of ASN.1 data. Therefore
2778 applications that print this data could be vulnerable if the data is from
2779 untrusted sources. OpenSSL command line applications could also be
2780 vulnerable where they print out ASN.1 data, or if untrusted data is passed
2781 as command line arguments.
2783 Libssl is not considered directly vulnerable. Additionally certificates etc
2784 received via remote connections via libssl are also unlikely to be able to
2785 trigger these issues because of message size limits enforced within libssl.
2787 This issue was reported to OpenSSL Guido Vranken.
2791 *) Side channel attack on modular exponentiation
2793 A side-channel attack was found which makes use of cache-bank conflicts on
2794 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
2795 of RSA keys. The ability to exploit this issue is limited as it relies on
2796 an attacker who has control of code in a thread running on the same
2797 hyper-threaded core as the victim thread which is performing decryptions.
2799 This issue was reported to OpenSSL by Yuval Yarom, The University of
2800 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
2801 Nadia Heninger, University of Pennsylvania with more information at
2802 http://cachebleed.info.
2806 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
2807 if no keysize is specified with default_bits. This fixes an
2808 omission in an earlier change that changed all RSA/DSA key generation
2809 apps to use 2048 bits by default.
2812 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
2813 *) DH small subgroups
2815 Historically OpenSSL only ever generated DH parameters based on "safe"
2816 primes. More recently (in version 1.0.2) support was provided for
2817 generating X9.42 style parameter files such as those required for RFC 5114
2818 support. The primes used in such files may not be "safe". Where an
2819 application is using DH configured with parameters based on primes that are
2820 not "safe" then an attacker could use this fact to find a peer's private
2821 DH exponent. This attack requires that the attacker complete multiple
2822 handshakes in which the peer uses the same private DH exponent. For example
2823 this could be used to discover a TLS server's private DH exponent if it's
2824 reusing the private DH exponent or it's using a static DH ciphersuite.
2826 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
2827 TLS. It is not on by default. If the option is not set then the server
2828 reuses the same private DH exponent for the life of the server process and
2829 would be vulnerable to this attack. It is believed that many popular
2830 applications do set this option and would therefore not be at risk.
2832 The fix for this issue adds an additional check where a "q" parameter is
2833 available (as is the case in X9.42 based parameters). This detects the
2834 only known attack, and is the only possible defense for static DH
2835 ciphersuites. This could have some performance impact.
2837 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
2838 default and cannot be disabled. This could have some performance impact.
2840 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
2844 *) SSLv2 doesn't block disabled ciphers
2846 A malicious client can negotiate SSLv2 ciphers that have been disabled on
2847 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
2848 been disabled, provided that the SSLv2 protocol was not also disabled via
2851 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
2852 and Sebastian Schinzel.
2856 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
2858 *) BN_mod_exp may produce incorrect results on x86_64
2860 There is a carry propagating bug in the x86_64 Montgomery squaring
2861 procedure. No EC algorithms are affected. Analysis suggests that attacks
2862 against RSA and DSA as a result of this defect would be very difficult to
2863 perform and are not believed likely. Attacks against DH are considered just
2864 feasible (although very difficult) because most of the work necessary to
2865 deduce information about a private key may be performed offline. The amount
2866 of resources required for such an attack would be very significant and
2867 likely only accessible to a limited number of attackers. An attacker would
2868 additionally need online access to an unpatched system using the target
2869 private key in a scenario with persistent DH parameters and a private
2870 key that is shared between multiple clients. For example this can occur by
2871 default in OpenSSL DHE based SSL/TLS ciphersuites.
2873 This issue was reported to OpenSSL by Hanno Böck.
2877 *) Certificate verify crash with missing PSS parameter
2879 The signature verification routines will crash with a NULL pointer
2880 dereference if presented with an ASN.1 signature using the RSA PSS
2881 algorithm and absent mask generation function parameter. Since these
2882 routines are used to verify certificate signature algorithms this can be
2883 used to crash any certificate verification operation and exploited in a
2884 DoS attack. Any application which performs certificate verification is
2885 vulnerable including OpenSSL clients and servers which enable client
2888 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
2892 *) X509_ATTRIBUTE memory leak
2894 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
2895 memory. This structure is used by the PKCS#7 and CMS routines so any
2896 application which reads PKCS#7 or CMS data from untrusted sources is
2897 affected. SSL/TLS is not affected.
2899 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
2904 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2905 This changes the decoding behaviour for some invalid messages,
2906 though the change is mostly in the more lenient direction, and
2907 legacy behaviour is preserved as much as possible.
2910 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2912 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2914 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
2916 *) Alternate chains certificate forgery
2918 During certificate verification, OpenSSL will attempt to find an
2919 alternative certificate chain if the first attempt to build such a chain
2920 fails. An error in the implementation of this logic can mean that an
2921 attacker could cause certain checks on untrusted certificates to be
2922 bypassed, such as the CA flag, enabling them to use a valid leaf
2923 certificate to act as a CA and "issue" an invalid certificate.
2925 This issue was reported to OpenSSL by Adam Langley/David Benjamin
2929 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
2931 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
2932 incompatibility in the handling of HMAC. The previous ABI has now been
2936 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
2938 *) Malformed ECParameters causes infinite loop
2940 When processing an ECParameters structure OpenSSL enters an infinite loop
2941 if the curve specified is over a specially malformed binary polynomial
2944 This can be used to perform denial of service against any
2945 system which processes public keys, certificate requests or
2946 certificates. This includes TLS clients and TLS servers with
2947 client authentication enabled.
2949 This issue was reported to OpenSSL by Joseph Barr-Pixton.
2953 *) Exploitable out-of-bounds read in X509_cmp_time
2955 X509_cmp_time does not properly check the length of the ASN1_TIME
2956 string and can read a few bytes out of bounds. In addition,
2957 X509_cmp_time accepts an arbitrary number of fractional seconds in the
2960 An attacker can use this to craft malformed certificates and CRLs of
2961 various sizes and potentially cause a segmentation fault, resulting in
2962 a DoS on applications that verify certificates or CRLs. TLS clients
2963 that verify CRLs are affected. TLS clients and servers with client
2964 authentication enabled may be affected if they use custom verification
2967 This issue was reported to OpenSSL by Robert Swiecki (Google), and
2968 independently by Hanno Böck.
2972 *) PKCS7 crash with missing EnvelopedContent
2974 The PKCS#7 parsing code does not handle missing inner EncryptedContent
2975 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
2976 with missing content and trigger a NULL pointer dereference on parsing.
2978 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
2979 structures from untrusted sources are affected. OpenSSL clients and
2980 servers are not affected.
2982 This issue was reported to OpenSSL by Michal Zalewski (Google).
2986 *) CMS verify infinite loop with unknown hash function
2988 When verifying a signedData message the CMS code can enter an infinite loop
2989 if presented with an unknown hash function OID. This can be used to perform
2990 denial of service against any system which verifies signedData messages using
2992 This issue was reported to OpenSSL by Johannes Bauer.
2996 *) Race condition handling NewSessionTicket
2998 If a NewSessionTicket is received by a multi-threaded client when attempting to
2999 reuse a previous ticket then a race condition can occur potentially leading to
3000 a double free of the ticket data.
3004 *) Only support 256-bit or stronger elliptic curves with the
3005 'ecdh_auto' setting (server) or by default (client). Of supported
3006 curves, prefer P-256 (both).
3009 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
3011 *) ClientHello sigalgs DoS fix
3013 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
3014 invalid signature algorithms extension a NULL pointer dereference will
3015 occur. This can be exploited in a DoS attack against the server.
3017 This issue was was reported to OpenSSL by David Ramos of Stanford
3020 [Stephen Henson and Matt Caswell]
3022 *) Multiblock corrupted pointer fix
3024 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
3025 feature only applies on 64 bit x86 architecture platforms that support AES
3026 NI instructions. A defect in the implementation of "multiblock" can cause
3027 OpenSSL's internal write buffer to become incorrectly set to NULL when
3028 using non-blocking IO. Typically, when the user application is using a
3029 socket BIO for writing, this will only result in a failed connection.
3030 However if some other BIO is used then it is likely that a segmentation
3031 fault will be triggered, thus enabling a potential DoS attack.
3033 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
3037 *) Segmentation fault in DTLSv1_listen fix
3039 The DTLSv1_listen function is intended to be stateless and processes the
3040 initial ClientHello from many peers. It is common for user code to loop
3041 over the call to DTLSv1_listen until a valid ClientHello is received with
3042 an associated cookie. A defect in the implementation of DTLSv1_listen means
3043 that state is preserved in the SSL object from one invocation to the next
3044 that can lead to a segmentation fault. Errors processing the initial
3045 ClientHello can trigger this scenario. An example of such an error could be
3046 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
3049 This issue was reported to OpenSSL by Per Allansson.
3053 *) Segmentation fault in ASN1_TYPE_cmp fix
3055 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
3056 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
3057 certificate signature algorithm consistency this can be used to crash any
3058 certificate verification operation and exploited in a DoS attack. Any
3059 application which performs certificate verification is vulnerable including
3060 OpenSSL clients and servers which enable client authentication.
3064 *) Segmentation fault for invalid PSS parameters fix
3066 The signature verification routines will crash with a NULL pointer
3067 dereference if presented with an ASN.1 signature using the RSA PSS
3068 algorithm and invalid parameters. Since these routines are used to verify
3069 certificate signature algorithms this can be used to crash any
3070 certificate verification operation and exploited in a DoS attack. Any
3071 application which performs certificate verification is vulnerable including
3072 OpenSSL clients and servers which enable client authentication.
3074 This issue was was reported to OpenSSL by Brian Carpenter.
3078 *) ASN.1 structure reuse memory corruption fix
3080 Reusing a structure in ASN.1 parsing may allow an attacker to cause
3081 memory corruption via an invalid write. Such reuse is and has been
3082 strongly discouraged and is believed to be rare.
3084 Applications that parse structures containing CHOICE or ANY DEFINED BY
3085 components may be affected. Certificate parsing (d2i_X509 and related
3086 functions) are however not affected. OpenSSL clients and servers are
3091 *) PKCS7 NULL pointer dereferences fix
3093 The PKCS#7 parsing code does not handle missing outer ContentInfo
3094 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
3095 missing content and trigger a NULL pointer dereference on parsing.
3097 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
3098 otherwise parse PKCS#7 structures from untrusted sources are
3099 affected. OpenSSL clients and servers are not affected.
3101 This issue was reported to OpenSSL by Michal Zalewski (Google).
3105 *) DoS via reachable assert in SSLv2 servers fix
3107 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
3108 servers that both support SSLv2 and enable export cipher suites by sending
3109 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
3111 This issue was discovered by Sean Burford (Google) and Emilia Käsper
3112 (OpenSSL development team).
3116 *) Empty CKE with client auth and DHE fix
3118 If client auth is used then a server can seg fault in the event of a DHE
3119 ciphersuite being selected and a zero length ClientKeyExchange message
3120 being sent by the client. This could be exploited in a DoS attack.
3124 *) Handshake with unseeded PRNG fix
3126 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
3127 with an unseeded PRNG. The conditions are:
3128 - The client is on a platform where the PRNG has not been seeded
3129 automatically, and the user has not seeded manually
3130 - A protocol specific client method version has been used (i.e. not
3131 SSL_client_methodv23)
3132 - A ciphersuite is used that does not require additional random data from
3133 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
3135 If the handshake succeeds then the client random that has been used will
3136 have been generated from a PRNG with insufficient entropy and therefore the
3137 output may be predictable.
3139 For example using the following command with an unseeded openssl will
3140 succeed on an unpatched platform:
3142 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
3146 *) Use After Free following d2i_ECPrivatekey error fix
3148 A malformed EC private key file consumed via the d2i_ECPrivateKey function
3149 could cause a use after free condition. This, in turn, could cause a double
3150 free in several private key parsing functions (such as d2i_PrivateKey
3151 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
3152 for applications that receive EC private keys from untrusted
3153 sources. This scenario is considered rare.
3155 This issue was discovered by the BoringSSL project and fixed in their
3160 *) X509_to_X509_REQ NULL pointer deref fix
3162 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
3163 the certificate key is invalid. This function is rarely used in practice.
3165 This issue was discovered by Brian Carpenter.
3169 *) Removed the export ciphers from the DEFAULT ciphers
3172 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
3174 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
3175 ARMv5 through ARMv8, as opposite to "locking" it to single one.
3176 So far those who have to target multiple platforms would compromise
3177 and argue that binary targeting say ARMv5 would still execute on
3178 ARMv8. "Universal" build resolves this compromise by providing
3179 near-optimal performance even on newer platforms.
3182 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
3183 (other platforms pending).
3184 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
3186 *) Add support for the SignedCertificateTimestampList certificate and
3187 OCSP response extensions from RFC6962.
3190 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3191 for corner cases. (Certain input points at infinity could lead to
3192 bogus results, with non-infinity inputs mapped to infinity too.)
3195 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
3196 This covers AES, SHA256/512 and GHASH. "Initial" means that most
3197 common cases are optimized and there still is room for further
3198 improvements. Vector Permutation AES for Altivec is also added.
3201 *) Add support for little-endian ppc64 Linux target.
3202 [Marcelo Cerri (IBM)]
3204 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
3205 SHA1, SHA256 and GHASH. "Initial" means that most common cases
3206 are optimized and there still is room for further improvements.
3207 Both 32- and 64-bit modes are supported.
3208 [Andy Polyakov, Ard Biesheuvel (Linaro)]
3210 *) Improved ARMv7 NEON support.
3213 *) Support for SPARC Architecture 2011 crypto extensions, first
3214 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
3215 SHA256/512, MD5, GHASH and modular exponentiation.
3216 [Andy Polyakov, David Miller]
3218 *) Accelerated modular exponentiation for Intel processors, a.k.a.
3220 [Shay Gueron & Vlad Krasnov (Intel Corp)]
3222 *) Support for new and upcoming Intel processors, including AVX2,
3223 BMI and SHA ISA extensions. This includes additional "stitched"
3224 implementations, AESNI-SHA256 and GCM, and multi-buffer support
3227 This work was sponsored by Intel Corp.
3230 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
3231 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
3232 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
3235 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
3236 this fixes a limitation in previous versions of OpenSSL.
3239 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
3240 MGF1 digest and OAEP label.
3243 *) Add EVP support for key wrapping algorithms, to avoid problems with
3244 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
3245 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
3246 algorithms and include tests cases.
3249 *) Add functions to allocate and set the fields of an ECDSA_METHOD
3251 [Douglas E. Engert, Steve Henson]
3253 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
3254 difference in days and seconds between two tm or ASN1_TIME structures.
3257 *) Add -rev test option to s_server to just reverse order of characters
3258 received by client and send back to server. Also prints an abbreviated
3259 summary of the connection parameters.
3262 *) New option -brief for s_client and s_server to print out a brief summary
3263 of connection parameters.
3266 *) Add callbacks for arbitrary TLS extensions.
3267 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
3269 *) New option -crl_download in several openssl utilities to download CRLs
3270 from CRLDP extension in certificates.
3273 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
3276 *) New function X509_CRL_diff to generate a delta CRL from the difference
3277 of two full CRLs. Add support to "crl" utility.
3280 *) New functions to set lookup_crls function and to retrieve
3281 X509_STORE from X509_STORE_CTX.
3284 *) Print out deprecated issuer and subject unique ID fields in
3288 *) Extend OCSP I/O functions so they can be used for simple general purpose
3289 HTTP as well as OCSP. New wrapper function which can be used to download
3290 CRLs using the OCSP API.
3293 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
3296 *) SSL_CONF* functions. These provide a common framework for application
3297 configuration using configuration files or command lines.
3300 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
3301 message callback and prints the results. Needs compile time option
3302 "enable-ssl-trace". New options to s_client and s_server to enable
3306 *) New ctrl and macro to retrieve supported points extensions.
3307 Print out extension in s_server and s_client.
3310 *) New functions to retrieve certificate signature and signature
3314 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
3318 *) New Suite B modes for TLS code. These use and enforce the requirements
3319 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
3320 only use Suite B curves. The Suite B modes can be set by using the
3321 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
3324 *) New chain verification flags for Suite B levels of security. Check
3325 algorithms are acceptable when flags are set in X509_verify_cert.
3328 *) Make tls1_check_chain return a set of flags indicating checks passed
3329 by a certificate chain. Add additional tests to handle client
3330 certificates: checks for matching certificate type and issuer name
3334 *) If an attempt is made to use a signature algorithm not in the peer
3335 preference list abort the handshake. If client has no suitable
3336 signature algorithms in response to a certificate request do not
3337 use the certificate.
3340 *) If server EC tmp key is not in client preference list abort handshake.
3343 *) Add support for certificate stores in CERT structure. This makes it
3344 possible to have different stores per SSL structure or one store in
3345 the parent SSL_CTX. Include distinct stores for certificate chain
3346 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
3347 to build and store a certificate chain in CERT structure: returning
3348 an error if the chain cannot be built: this will allow applications
3349 to test if a chain is correctly configured.
3351 Note: if the CERT based stores are not set then the parent SSL_CTX
3352 store is used to retain compatibility with existing behaviour.
3356 *) New function ssl_set_client_disabled to set a ciphersuite disabled
3357 mask based on the current session, check mask when sending client
3358 hello and checking the requested ciphersuite.
3361 *) New ctrls to retrieve and set certificate types in a certificate
3362 request message. Print out received values in s_client. If certificate
3363 types is not set with custom values set sensible values based on
3364 supported signature algorithms.
3367 *) Support for distinct client and server supported signature algorithms.
3370 *) Add certificate callback. If set this is called whenever a certificate
3371 is required by client or server. An application can decide which
3372 certificate chain to present based on arbitrary criteria: for example
3373 supported signature algorithms. Add very simple example to s_server.
3374 This fixes many of the problems and restrictions of the existing client
3375 certificate callback: for example you can now clear an existing
3376 certificate and specify the whole chain.
3379 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
3380 the certificate can be used for (if anything). Set valid_flags field
3381 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
3382 to have similar checks in it.
3384 Add new "cert_flags" field to CERT structure and include a "strict mode".
3385 This enforces some TLS certificate requirements (such as only permitting
3386 certificate signature algorithms contained in the supported algorithms
3387 extension) which some implementations ignore: this option should be used
3388 with caution as it could cause interoperability issues.
3391 *) Update and tidy signature algorithm extension processing. Work out
3392 shared signature algorithms based on preferences and peer algorithms
3393 and print them out in s_client and s_server. Abort handshake if no
3394 shared signature algorithms.
3397 *) Add new functions to allow customised supported signature algorithms
3398 for SSL and SSL_CTX structures. Add options to s_client and s_server
3402 *) New function SSL_certs_clear() to delete all references to certificates
3403 from an SSL structure. Before this once a certificate had been added
3404 it couldn't be removed.
3407 *) Integrate hostname, email address and IP address checking with certificate
3408 verification. New verify options supporting checking in openssl utility.
3411 *) Fixes and wildcard matching support to hostname and email checking
3412 functions. Add manual page.
3413 [Florian Weimer (Red Hat Product Security Team)]
3415 *) New functions to check a hostname email or IP address against a
3416 certificate. Add options x509 utility to print results of checks against
3420 *) Fix OCSP checking.
3421 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
3423 *) Initial experimental support for explicitly trusted non-root CAs.
3424 OpenSSL still tries to build a complete chain to a root but if an
3425 intermediate CA has a trust setting included that is used. The first
3426 setting is used: whether to trust (e.g., -addtrust option to the x509
3430 *) Add -trusted_first option which attempts to find certificates in the
3431 trusted store even if an untrusted chain is also supplied.
3434 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
3435 platform support for Linux and Android.
3438 *) Support for linux-x32, ILP32 environment in x86_64 framework.
3441 *) Experimental multi-implementation support for FIPS capable OpenSSL.
3442 When in FIPS mode the approved implementations are used as normal,
3443 when not in FIPS mode the internal unapproved versions are used instead.
3444 This means that the FIPS capable OpenSSL isn't forced to use the
3445 (often lower performance) FIPS implementations outside FIPS mode.
3448 *) Transparently support X9.42 DH parameters when calling
3449 PEM_read_bio_DHparameters. This means existing applications can handle
3450 the new parameter format automatically.
3453 *) Initial experimental support for X9.42 DH parameter format: mainly
3454 to support use of 'q' parameter for RFC5114 parameters.
3457 *) Add DH parameters from RFC5114 including test data to dhtest.
3460 *) Support for automatic EC temporary key parameter selection. If enabled
3461 the most preferred EC parameters are automatically used instead of
3462 hardcoded fixed parameters. Now a server just has to call:
3463 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
3464 support ECDH and use the most appropriate parameters.
3467 *) Enhance and tidy EC curve and point format TLS extension code. Use
3468 static structures instead of allocation if default values are used.
3469 New ctrls to set curves we wish to support and to retrieve shared curves.
3470 Print out shared curves in s_server. New options to s_server and s_client
3471 to set list of supported curves.
3474 *) New ctrls to retrieve supported signature algorithms and
3475 supported curve values as an array of NIDs. Extend openssl utility
3476 to print out received values.
3479 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
3480 between NIDs and the more common NIST names such as "P-256". Enhance
3481 ecparam utility and ECC method to recognise the NIST names for curves.
3484 *) Enhance SSL/TLS certificate chain handling to support different
3485 chains for each certificate instead of one chain in the parent SSL_CTX.
3488 *) Support for fixed DH ciphersuite client authentication: where both
3489 server and client use DH certificates with common parameters.
3492 *) Support for fixed DH ciphersuites: those requiring DH server
3496 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
3498 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
3499 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
3500 X509_CINF_get_signature were reverted post internal team review.
3502 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
3504 *) Build fixes for the Windows and OpenVMS platforms
3505 [Matt Caswell and Richard Levitte]
3507 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
3509 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
3510 message can cause a segmentation fault in OpenSSL due to a NULL pointer
3511 dereference. This could lead to a Denial Of Service attack. Thanks to
3512 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
3516 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
3517 dtls1_buffer_record function under certain conditions. In particular this
3518 could occur if an attacker sent repeated DTLS records with the same
3519 sequence number but for the next epoch. The memory leak could be exploited
3520 by an attacker in a Denial of Service attack through memory exhaustion.
3521 Thanks to Chris Mueller for reporting this issue.
3525 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
3526 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
3527 method would be set to NULL which could later result in a NULL pointer
3528 dereference. Thanks to Frank Schmirler for reporting this issue.
3532 *) Abort handshake if server key exchange message is omitted for ephemeral
3535 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
3536 reporting this issue.
3540 *) Remove non-export ephemeral RSA code on client and server. This code
3541 violated the TLS standard by allowing the use of temporary RSA keys in
3542 non-export ciphersuites and could be used by a server to effectively
3543 downgrade the RSA key length used to a value smaller than the server
3544 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
3545 INRIA or reporting this issue.
3549 *) Fixed issue where DH client certificates are accepted without verification.
3550 An OpenSSL server will accept a DH certificate for client authentication
3551 without the certificate verify message. This effectively allows a client to
3552 authenticate without the use of a private key. This only affects servers
3553 which trust a client certificate authority which issues certificates
3554 containing DH keys: these are extremely rare and hardly ever encountered.
3555 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
3560 *) Ensure that the session ID context of an SSL is updated when its
3561 SSL_CTX is updated via SSL_set_SSL_CTX.
3563 The session ID context is typically set from the parent SSL_CTX,
3564 and can vary with the CTX.
3567 *) Fix various certificate fingerprint issues.
3569 By using non-DER or invalid encodings outside the signed portion of a
3570 certificate the fingerprint can be changed without breaking the signature.
3571 Although no details of the signed portion of the certificate can be changed
3572 this can cause problems with some applications: e.g. those using the
3573 certificate fingerprint for blacklists.
3575 1. Reject signatures with non zero unused bits.
3577 If the BIT STRING containing the signature has non zero unused bits reject
3578 the signature. All current signature algorithms require zero unused bits.
3580 2. Check certificate algorithm consistency.
3582 Check the AlgorithmIdentifier inside TBS matches the one in the
3583 certificate signature. NB: this will result in signature failure
3584 errors for some broken certificates.
3586 Thanks to Konrad Kraszewski from Google for reporting this issue.
3588 3. Check DSA/ECDSA signatures use DER.
3590 Re-encode DSA/ECDSA signatures and compare with the original received
3591 signature. Return an error if there is a mismatch.
3593 This will reject various cases including garbage after signature
3594 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
3595 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
3596 (negative or with leading zeroes).
3598 Further analysis was conducted and fixes were developed by Stephen Henson
3599 of the OpenSSL core team.
3604 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
3605 results on some platforms, including x86_64. This bug occurs at random
3606 with a very low probability, and is not known to be exploitable in any
3607 way, though its exact impact is difficult to determine. Thanks to Pieter
3608 Wuille (Blockstream) who reported this issue and also suggested an initial
3609 fix. Further analysis was conducted by the OpenSSL development team and
3610 Adam Langley of Google. The final fix was developed by Andy Polyakov of
3611 the OpenSSL core team.
3615 *) Do not resume sessions on the server if the negotiated protocol
3616 version does not match the session's version. Resuming with a different
3617 version, while not strictly forbidden by the RFC, is of questionable
3618 sanity and breaks all known clients.
3619 [David Benjamin, Emilia Käsper]
3621 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
3622 early CCS messages during renegotiation. (Note that because
3623 renegotiation is encrypted, this early CCS was not exploitable.)
3626 *) Tighten client-side session ticket handling during renegotiation:
3627 ensure that the client only accepts a session ticket if the server sends
3628 the extension anew in the ServerHello. Previously, a TLS client would
3629 reuse the old extension state and thus accept a session ticket if one was
3630 announced in the initial ServerHello.
3632 Similarly, ensure that the client requires a session ticket if one
3633 was advertised in the ServerHello. Previously, a TLS client would
3634 ignore a missing NewSessionTicket message.
3637 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
3639 *) SRTP Memory Leak.
3641 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
3642 sends a carefully crafted handshake message, to cause OpenSSL to fail
3643 to free up to 64k of memory causing a memory leak. This could be
3644 exploited in a Denial Of Service attack. This issue affects OpenSSL
3645 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
3646 whether SRTP is used or configured. Implementations of OpenSSL that
3647 have been compiled with OPENSSL_NO_SRTP defined are not affected.
3649 The fix was developed by the OpenSSL team.
3653 *) Session Ticket Memory Leak.
3655 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
3656 integrity of that ticket is first verified. In the event of a session
3657 ticket integrity check failing, OpenSSL will fail to free memory
3658 causing a memory leak. By sending a large number of invalid session
3659 tickets an attacker could exploit this issue in a Denial Of Service
3664 *) Build option no-ssl3 is incomplete.
3666 When OpenSSL is configured with "no-ssl3" as a build option, servers
3667 could accept and complete a SSL 3.0 handshake, and clients could be
3668 configured to send them.
3670 [Akamai and the OpenSSL team]
3672 *) Add support for TLS_FALLBACK_SCSV.
3673 Client applications doing fallback retries should call
3674 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
3676 [Adam Langley, Bodo Moeller]
3678 *) Add additional DigestInfo checks.
3680 Re-encode DigestInto in DER and check against the original when
3681 verifying RSA signature: this will reject any improperly encoded
3682 DigestInfo structures.
3684 Note: this is a precautionary measure and no attacks are currently known.
3688 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
3690 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
3691 SRP code can be overrun an internal buffer. Add sanity check that
3692 g, A, B < N to SRP code.
3694 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
3695 Group for discovering this issue.
3699 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
3700 TLS 1.0 instead of higher protocol versions when the ClientHello message
3701 is badly fragmented. This allows a man-in-the-middle attacker to force a
3702 downgrade to TLS 1.0 even if both the server and the client support a
3703 higher protocol version, by modifying the client's TLS records.
3705 Thanks to David Benjamin and Adam Langley (Google) for discovering and
3706 researching this issue.
3710 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
3711 to a denial of service attack. A malicious server can crash the client
3712 with a null pointer dereference (read) by specifying an anonymous (EC)DH
3713 ciphersuite and sending carefully crafted handshake messages.
3715 Thanks to Felix Gröbert (Google) for discovering and researching this
3720 *) By sending carefully crafted DTLS packets an attacker could cause openssl
3721 to leak memory. This can be exploited through a Denial of Service attack.
3722 Thanks to Adam Langley for discovering and researching this issue.
3726 *) An attacker can force openssl to consume large amounts of memory whilst
3727 processing DTLS handshake messages. This can be exploited through a
3728 Denial of Service attack.
3729 Thanks to Adam Langley for discovering and researching this issue.
3733 *) An attacker can force an error condition which causes openssl to crash
3734 whilst processing DTLS packets due to memory being freed twice. This
3735 can be exploited through a Denial of Service attack.
3736 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
3741 *) If a multithreaded client connects to a malicious server using a resumed
3742 session and the server sends an ec point format extension it could write
3743 up to 255 bytes to freed memory.
3745 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
3750 *) A malicious server can crash an OpenSSL client with a null pointer
3751 dereference (read) by specifying an SRP ciphersuite even though it was not
3752 properly negotiated with the client. This can be exploited through a
3753 Denial of Service attack.
3755 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
3756 discovering and researching this issue.
3760 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
3761 X509_name_oneline, X509_name_print_ex et al. to leak some information
3762 from the stack. Applications may be affected if they echo pretty printing
3763 output to the attacker.
3765 Thanks to Ivan Fratric (Google) for discovering this issue.
3767 [Emilia Käsper, and Steve Henson]
3769 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3770 for corner cases. (Certain input points at infinity could lead to
3771 bogus results, with non-infinity inputs mapped to infinity too.)
3774 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
3776 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
3777 handshake can force the use of weak keying material in OpenSSL
3778 SSL/TLS clients and servers.
3780 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
3781 researching this issue. (CVE-2014-0224)
3782 [KIKUCHI Masashi, Steve Henson]
3784 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
3785 OpenSSL DTLS client the code can be made to recurse eventually crashing
3788 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
3790 [Imre Rad, Steve Henson]
3792 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
3793 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
3794 client or server. This is potentially exploitable to run arbitrary
3795 code on a vulnerable client or server.
3797 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
3798 [Jüri Aedla, Steve Henson]
3800 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
3801 are subject to a denial of service attack.
3803 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
3804 this issue. (CVE-2014-3470)
3805 [Felix Gröbert, Ivan Fratric, Steve Henson]
3807 *) Harmonize version and its documentation. -f flag is used to display
3809 [mancha <mancha1@zoho.com>]
3811 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
3812 in i2d_ECPrivateKey.
3813 [mancha <mancha1@zoho.com>]
3815 *) Fix some double frees. These are not thought to be exploitable.
3816 [mancha <mancha1@zoho.com>]
3818 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
3820 *) A missing bounds check in the handling of the TLS heartbeat extension
3821 can be used to reveal up to 64k of memory to a connected client or
3824 Thanks for Neel Mehta of Google Security for discovering this bug and to
3825 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
3826 preparing the fix (CVE-2014-0160)
3827 [Adam Langley, Bodo Moeller]
3829 *) Fix for the attack described in the paper "Recovering OpenSSL
3830 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
3831 by Yuval Yarom and Naomi Benger. Details can be obtained from:
3832 http://eprint.iacr.org/2014/140
3834 Thanks to Yuval Yarom and Naomi Benger for discovering this
3835 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
3836 [Yuval Yarom and Naomi Benger]
3838 *) TLS pad extension: draft-agl-tls-padding-03
3840 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
3841 TLS client Hello record length value would otherwise be > 255 and
3842 less that 512 pad with a dummy extension containing zeroes so it
3843 is at least 512 bytes long.
3845 [Adam Langley, Steve Henson]
3847 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
3849 *) Fix for TLS record tampering bug. A carefully crafted invalid
3850 handshake could crash OpenSSL with a NULL pointer exception.
3851 Thanks to Anton Johansson for reporting this issues.
3854 *) Keep original DTLS digest and encryption contexts in retransmission
3855 structures so we can use the previous session parameters if they need
3856 to be resent. (CVE-2013-6450)
3859 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
3860 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
3861 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
3862 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
3863 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
3864 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
3865 [Rob Stradling, Adam Langley]
3867 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
3869 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
3870 supporting platforms or when small records were transferred.
3871 [Andy Polyakov, Steve Henson]
3873 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
3875 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
3877 This addresses the flaw in CBC record processing discovered by
3878 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
3879 at: http://www.isg.rhul.ac.uk/tls/
3881 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3882 Security Group at Royal Holloway, University of London
3883 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
3884 Emilia Käsper for the initial patch.
3886 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
3888 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
3889 ciphersuites which can be exploited in a denial of service attack.
3890 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
3891 and detecting this bug and to Wolfgang Ettlinger
3892 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
3896 *) Return an error when checking OCSP signatures when key is NULL.
3897 This fixes a DoS attack. (CVE-2013-0166)
3900 *) Make openssl verify return errors.
3901 [Chris Palmer <palmer@google.com> and Ben Laurie]
3903 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
3904 the right response is stapled. Also change SSL_get_certificate()
3905 so it returns the certificate actually sent.
3906 See http://rt.openssl.org/Ticket/Display.html?id=2836.
3907 [Rob Stradling <rob.stradling@comodo.com>]
3909 *) Fix possible deadlock when decoding public keys.
3912 *) Don't use TLS 1.0 record version number in initial client hello
3916 Changes between 1.0.1b and 1.0.1c [10 May 2012]
3918 *) Sanity check record length before skipping explicit IV in TLS
3919 1.2, 1.1 and DTLS to fix DoS attack.
3921 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
3922 fuzzing as a service testing platform.
3926 *) Initialise tkeylen properly when encrypting CMS messages.
3927 Thanks to Solar Designer of Openwall for reporting this issue.
3930 *) In FIPS mode don't try to use composite ciphers as they are not
3934 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
3936 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
3937 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
3938 mean any application compiled against OpenSSL 1.0.0 headers setting
3939 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
3940 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
3941 0x10000000L Any application which was previously compiled against
3942 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
3943 will need to be recompiled as a result. Letting be results in
3944 inability to disable specifically TLS 1.1 and in client context,
3945 in unlike event, limit maximum offered version to TLS 1.0 [see below].
3948 *) In order to ensure interoperability SSL_OP_NO_protocolX does not
3949 disable just protocol X, but all protocols above X *if* there are
3950 protocols *below* X still enabled. In more practical terms it means
3951 that if application wants to disable TLS1.0 in favor of TLS1.1 and
3952 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
3953 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
3957 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
3959 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
3960 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
3961 in CRYPTO_realloc_clean.
3963 Thanks to Tavis Ormandy, Google Security Team, for discovering this
3964 issue and to Adam Langley <agl@chromium.org> for fixing it.
3966 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
3968 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
3971 *) Workarounds for some broken servers that "hang" if a client hello
3972 record length exceeds 255 bytes.
3974 1. Do not use record version number > TLS 1.0 in initial client
3975 hello: some (but not all) hanging servers will now work.
3976 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
3977 the number of ciphers sent in the client hello. This should be
3978 set to an even number, such as 50, for example by passing:
3979 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
3980 Most broken servers should now work.
3981 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
3982 TLS 1.2 client support entirely.
3985 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
3988 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
3990 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
3991 STRING form instead of a DigestInfo.
3994 *) The format used for MDC2 RSA signatures is inconsistent between EVP
3995 and the RSA_sign/RSA_verify functions. This was made more apparent when
3996 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
3997 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
3998 the correct format in RSA_verify so both forms transparently work.
4001 *) Some servers which support TLS 1.0 can choke if we initially indicate
4002 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
4003 encrypted premaster secret. As a workaround use the maximum permitted
4004 client version in client hello, this should keep such servers happy
4005 and still work with previous versions of OpenSSL.
4008 *) Add support for TLS/DTLS heartbeats.
4009 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4011 *) Add support for SCTP.
4012 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4014 *) Improved PRNG seeding for VOS.
4015 [Paul Green <Paul.Green@stratus.com>]
4017 *) Extensive assembler packs updates, most notably:
4019 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
4020 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
4021 - x86_64: bit-sliced AES implementation;
4022 - ARM: NEON support, contemporary platforms optimizations;
4023 - s390x: z196 support;
4024 - *: GHASH and GF(2^m) multiplication implementations;
4028 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
4029 (removal of unnecessary code)
4030 [Peter Sylvester <peter.sylvester@edelweb.fr>]
4032 *) Add TLS key material exporter from RFC 5705.
4035 *) Add DTLS-SRTP negotiation from RFC 5764.
4038 *) Add Next Protocol Negotiation,
4039 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
4040 disabled with a no-npn flag to config or Configure. Code donated
4042 [Adam Langley <agl@google.com> and Ben Laurie]
4044 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
4045 NIST-P256, NIST-P521, with constant-time single point multiplication on
4046 typical inputs. Compiler support for the nonstandard type __uint128_t is
4047 required to use this (present in gcc 4.4 and later, for 64-bit builds).
4048 Code made available under Apache License version 2.0.
4050 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
4051 line to include this in your build of OpenSSL, and run "make depend" (or
4052 "make update"). This enables the following EC_METHODs:
4054 EC_GFp_nistp224_method()
4055 EC_GFp_nistp256_method()
4056 EC_GFp_nistp521_method()
4058 EC_GROUP_new_by_curve_name() will automatically use these (while
4059 EC_GROUP_new_curve_GFp() currently prefers the more flexible
4061 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
4063 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
4064 all platforms. Move ssize_t definition from e_os.h to the public
4065 header file e_os2.h as it now appears in public header file cms.h
4068 *) New -sigopt option to the ca, req and x509 utilities. Additional
4069 signature parameters can be passed using this option and in
4073 *) Add RSA PSS signing function. This will generate and set the
4074 appropriate AlgorithmIdentifiers for PSS based on those in the
4075 corresponding EVP_MD_CTX structure. No application support yet.
4078 *) Support for companion algorithm specific ASN1 signing routines.
4079 New function ASN1_item_sign_ctx() signs a pre-initialised
4080 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
4081 the appropriate parameters.
4084 *) Add new algorithm specific ASN1 verification initialisation function
4085 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
4086 handling will be the same no matter what EVP_PKEY_METHOD is used.
4087 Add a PSS handler to support verification of PSS signatures: checked
4088 against a number of sample certificates.
4091 *) Add signature printing for PSS. Add PSS OIDs.
4092 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
4094 *) Add algorithm specific signature printing. An individual ASN1 method
4095 can now print out signatures instead of the standard hex dump.
4097 More complex signatures (e.g. PSS) can print out more meaningful
4098 information. Include DSA version that prints out the signature
4102 *) Password based recipient info support for CMS library: implementing
4106 *) Split password based encryption into PBES2 and PBKDF2 functions. This
4107 neatly separates the code into cipher and PBE sections and is required
4108 for some algorithms that split PBES2 into separate pieces (such as
4109 password based CMS).
4112 *) Session-handling fixes:
4113 - Fix handling of connections that are resuming with a session ID,
4114 but also support Session Tickets.
4115 - Fix a bug that suppressed issuing of a new ticket if the client
4116 presented a ticket with an expired session.
4117 - Try to set the ticket lifetime hint to something reasonable.
4118 - Make tickets shorter by excluding irrelevant information.
4119 - On the client side, don't ignore renewed tickets.
4120 [Adam Langley, Bodo Moeller (Google)]
4122 *) Fix PSK session representation.
4125 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
4127 This work was sponsored by Intel.
4130 *) Add GCM support to TLS library. Some custom code is needed to split
4131 the IV between the fixed (from PRF) and explicit (from TLS record)
4132 portions. This adds all GCM ciphersuites supported by RFC5288 and
4133 RFC5289. Generalise some AES* cipherstrings to include GCM and
4134 add a special AESGCM string for GCM only.
4137 *) Expand range of ctrls for AES GCM. Permit setting invocation
4138 field on decrypt and retrieval of invocation field only on encrypt.
4141 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
4142 As required by RFC5289 these ciphersuites cannot be used if for
4143 versions of TLS earlier than 1.2.
4146 *) For FIPS capable OpenSSL interpret a NULL default public key method
4147 as unset and return the appropriate default but do *not* set the default.
4148 This means we can return the appropriate method in applications that
4149 switch between FIPS and non-FIPS modes.
4152 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
4153 ENGINE is used then we cannot handle that in the FIPS module so we
4154 keep original code iff non-FIPS operations are allowed.
4157 *) Add -attime option to openssl utilities.
4158 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
4160 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
4163 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
4164 FIPS EC methods unconditionally for now.
4167 *) New build option no-ec2m to disable characteristic 2 code.
4170 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
4171 all cases can be covered as some introduce binary incompatibilities.
4174 *) Redirect RSA operations to FIPS module including keygen,
4175 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
4178 *) Add similar low level API blocking to ciphers.
4181 *) Low level digest APIs are not approved in FIPS mode: any attempt
4182 to use these will cause a fatal error. Applications that *really* want
4183 to use them can use the private_* version instead.
4186 *) Redirect cipher operations to FIPS module for FIPS builds.
4189 *) Redirect digest operations to FIPS module for FIPS builds.
4192 *) Update build system to add "fips" flag which will link in fipscanister.o
4193 for static and shared library builds embedding a signature if needed.
4196 *) Output TLS supported curves in preference order instead of numerical
4197 order. This is currently hardcoded for the highest order curves first.
4198 This should be configurable so applications can judge speed vs strength.
4201 *) Add TLS v1.2 server support for client authentication.
4204 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
4208 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
4209 FIPS modules versions.
4212 *) Add TLS v1.2 client side support for client authentication. Keep cache
4213 of handshake records longer as we don't know the hash algorithm to use
4214 until after the certificate request message is received.
4217 *) Initial TLS v1.2 client support. Add a default signature algorithms
4218 extension including all the algorithms we support. Parse new signature
4219 format in client key exchange. Relax some ECC signing restrictions for
4220 TLS v1.2 as indicated in RFC5246.
4223 *) Add server support for TLS v1.2 signature algorithms extension. Switch
4224 to new signature format when needed using client digest preference.
4225 All server ciphersuites should now work correctly in TLS v1.2. No client
4226 support yet and no support for client certificates.
4229 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
4230 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
4231 ciphersuites. At present only RSA key exchange ciphersuites work with
4232 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
4233 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
4234 and version checking.
4237 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
4238 with this defined it will not be affected by any changes to ssl internal
4239 structures. Add several utility functions to allow openssl application
4240 to work with OPENSSL_NO_SSL_INTERN defined.
4243 *) A long standing patch to add support for SRP from EdelWeb (Peter
4244 Sylvester and Christophe Renou) was integrated.
4245 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
4246 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
4249 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
4252 *) Permit abbreviated handshakes when renegotiating using the function
4253 SSL_renegotiate_abbreviated().
4254 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4256 *) Add call to ENGINE_register_all_complete() to
4257 ENGINE_load_builtin_engines(), so some implementations get used
4258 automatically instead of needing explicit application support.
4261 *) Add support for TLS key exporter as described in RFC5705.
4262 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
4264 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
4265 a few changes are required:
4267 Add SSL_OP_NO_TLSv1_1 flag.
4268 Add TLSv1_1 methods.
4269 Update version checking logic to handle version 1.1.
4270 Add explicit IV handling (ported from DTLS code).
4271 Add command line options to s_client/s_server.
4274 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
4276 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
4277 in CMS and PKCS7 code. When RSA decryption fails use a random key for
4278 content decryption and always return the same error. Note: this attack
4279 needs on average 2^20 messages so it only affects automated senders. The
4280 old behaviour can be re-enabled in the CMS code by setting the
4281 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
4282 an MMA defence is not necessary.
4283 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
4284 this issue. (CVE-2012-0884)
4287 *) Fix CVE-2011-4619: make sure we really are receiving a
4288 client hello before rejecting multiple SGC restarts. Thanks to
4289 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
4292 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
4294 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
4295 Thanks to Antonio Martin, Enterprise Secure Access Research and
4296 Development, Cisco Systems, Inc. for discovering this bug and
4297 preparing a fix. (CVE-2012-0050)
4300 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
4302 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
4303 of the Vaudenay padding oracle attack on CBC mode encryption
4304 which enables an efficient plaintext recovery attack against
4305 the OpenSSL implementation of DTLS. Their attack exploits timing
4306 differences arising during decryption processing. A research
4307 paper describing this attack can be found at:
4308 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
4309 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
4310 Security Group at Royal Holloway, University of London
4311 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
4312 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
4313 for preparing the fix. (CVE-2011-4108)
4314 [Robin Seggelmann, Michael Tuexen]
4316 *) Clear bytes used for block padding of SSL 3.0 records.
4318 [Adam Langley (Google)]
4320 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
4321 Kadianakis <desnacked@gmail.com> for discovering this issue and
4322 Adam Langley for preparing the fix. (CVE-2011-4619)
4323 [Adam Langley (Google)]
4325 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
4326 [Andrey Kulikov <amdeich@gmail.com>]
4328 *) Prevent malformed RFC3779 data triggering an assertion failure.
4329 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
4330 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
4331 [Rob Austein <sra@hactrn.net>]
4333 *) Improved PRNG seeding for VOS.
4334 [Paul Green <Paul.Green@stratus.com>]
4336 *) Fix ssl_ciph.c set-up race.
4337 [Adam Langley (Google)]
4339 *) Fix spurious failures in ecdsatest.c.
4340 [Emilia Käsper (Google)]
4342 *) Fix the BIO_f_buffer() implementation (which was mixing different
4343 interpretations of the '..._len' fields).
4344 [Adam Langley (Google)]
4346 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
4347 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
4348 threads won't reuse the same blinding coefficients.
4350 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
4351 lock to call BN_BLINDING_invert_ex, and avoids one use of
4352 BN_BLINDING_update for each BN_BLINDING structure (previously,
4353 the last update always remained unused).
4354 [Emilia Käsper (Google)]
4356 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
4357 [Bob Buckholz (Google)]
4359 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
4361 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
4362 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
4363 [Kaspar Brand <ossl@velox.ch>]
4365 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
4366 for multi-threaded use of ECDH. (CVE-2011-3210)
4367 [Adam Langley (Google)]
4369 *) Fix x509_name_ex_d2i memory leak on bad inputs.
4372 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
4373 signature public key algorithm by using OID xref utilities instead.
4374 Before this you could only use some ECC ciphersuites with SHA1 only.
4377 *) Add protection against ECDSA timing attacks as mentioned in the paper
4378 by Billy Bob Brumley and Nicola Tuveri, see:
4380 http://eprint.iacr.org/2011/232.pdf
4382 [Billy Bob Brumley and Nicola Tuveri]
4384 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
4386 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
4387 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
4389 *) Fix bug in string printing code: if *any* escaping is enabled we must
4390 escape the escape character (backslash) or the resulting string is
4394 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
4396 *) Disable code workaround for ancient and obsolete Netscape browsers
4397 and servers: an attacker can use it in a ciphersuite downgrade attack.
4398 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
4401 *) Fixed J-PAKE implementation error, originally discovered by
4402 Sebastien Martini, further info and confirmation from Stefan
4403 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
4406 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
4408 *) Fix extension code to avoid race conditions which can result in a buffer
4409 overrun vulnerability: resumed sessions must not be modified as they can
4410 be shared by multiple threads. CVE-2010-3864
4413 *) Fix WIN32 build system to correctly link an ENGINE directory into
4417 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
4419 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
4421 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
4423 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
4425 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
4426 context. The operation can be customised via the ctrl mechanism in
4427 case ENGINEs want to include additional functionality.
4430 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
4433 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
4434 output hashes compatible with older versions of OpenSSL.
4435 [Willy Weisz <weisz@vcpc.univie.ac.at>]
4437 *) Fix compression algorithm handling: if resuming a session use the
4438 compression algorithm of the resumed session instead of determining
4439 it from client hello again. Don't allow server to change algorithm.
4442 *) Add load_crls() function to apps tidying load_certs() too. Add option
4443 to verify utility to allow additional CRLs to be included.
4446 *) Update OCSP request code to permit adding custom headers to the request:
4447 some responders need this.
4450 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
4452 [Julia Lawall <julia@diku.dk>]
4454 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
4455 needlessly dereferenced structures, used obsolete functions and
4456 didn't handle all updated verify codes correctly.
4459 *) Disable MD2 in the default configuration.
4462 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
4463 indicate the initial BIO being pushed or popped. This makes it possible
4464 to determine whether the BIO is the one explicitly called or as a result
4465 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
4466 it handles reference counts correctly and doesn't zero out the I/O bio
4467 when it is not being explicitly popped. WARNING: applications which
4468 included workarounds for the old buggy behaviour will need to be modified
4469 or they could free up already freed BIOs.
4472 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
4473 renaming to all platforms (within the 0.9.8 branch, this was
4474 done conditionally on Netware platforms to avoid a name clash).
4475 [Guenter <lists@gknw.net>]
4477 *) Add ECDHE and PSK support to DTLS.
4478 [Michael Tuexen <tuexen@fh-muenster.de>]
4480 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
4484 *) Add "missing" function EVP_MD_flags() (without this the only way to
4485 retrieve a digest flags is by accessing the structure directly. Update
4486 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
4487 or cipher is registered as in the "from" argument. Print out all
4488 registered digests in the dgst usage message instead of manually
4489 attempting to work them out.
4492 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
4493 this allows the use of compression and extensions. Change default cipher
4494 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
4495 by default unless an application cipher string requests it.
4498 *) Alter match criteria in PKCS12_parse(). It used to try to use local
4499 key ids to find matching certificates and keys but some PKCS#12 files
4500 don't follow the (somewhat unwritten) rules and this strategy fails.
4501 Now just gather all certificates together and the first private key
4502 then look for the first certificate that matches the key.
4505 *) Support use of registered digest and cipher names for dgst and cipher
4506 commands instead of having to add each one as a special case. So now
4513 openssl dgst -sha256 foo
4515 and this works for ENGINE based algorithms too.
4519 *) Update Gost ENGINE to support parameter files.
4520 [Victor B. Wagner <vitus@cryptocom.ru>]
4522 *) Support GeneralizedTime in ca utility.
4523 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
4525 *) Enhance the hash format used for certificate directory links. The new
4526 form uses the canonical encoding (meaning equivalent names will work
4527 even if they aren't identical) and uses SHA1 instead of MD5. This form
4528 is incompatible with the older format and as a result c_rehash should
4529 be used to rebuild symbolic links.
4532 *) Make PKCS#8 the default write format for private keys, replacing the
4533 traditional format. This form is standardised, more secure and doesn't
4534 include an implicit MD5 dependency.
4537 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
4538 committed to OpenSSL should pass this lot as a minimum.
4541 *) Add session ticket override functionality for use by EAP-FAST.
4542 [Jouni Malinen <j@w1.fi>]
4544 *) Modify HMAC functions to return a value. Since these can be implemented
4545 in an ENGINE errors can occur.
4548 *) Type-checked OBJ_bsearch_ex.
4551 *) Type-checked OBJ_bsearch. Also some constification necessitated
4552 by type-checking. Still to come: TXT_DB, bsearch(?),
4553 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
4557 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
4558 seconds to a tm structure directly, instead of going through OS
4559 specific date routines. This avoids any issues with OS routines such
4560 as the year 2038 bug. New *_adj() functions for ASN1 time structures
4561 and X509_time_adj_ex() to cover the extended range. The existing
4562 X509_time_adj() is still usable and will no longer have any date issues.
4565 *) Delta CRL support. New use deltas option which will attempt to locate
4566 and search any appropriate delta CRLs available.
4568 This work was sponsored by Google.
4571 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
4572 code and add additional score elements. Validate alternate CRL paths
4573 as part of the CRL checking and indicate a new error "CRL path validation
4574 error" in this case. Applications wanting additional details can use
4575 the verify callback and check the new "parent" field. If this is not
4576 NULL CRL path validation is taking place. Existing applications won't
4577 see this because it requires extended CRL support which is off by
4580 This work was sponsored by Google.
4583 *) Support for freshest CRL extension.
4585 This work was sponsored by Google.
4588 *) Initial indirect CRL support. Currently only supported in the CRLs
4589 passed directly and not via lookup. Process certificate issuer
4590 CRL entry extension and lookup CRL entries by bother issuer name
4591 and serial number. Check and process CRL issuer entry in IDP extension.
4593 This work was sponsored by Google.
4596 *) Add support for distinct certificate and CRL paths. The CRL issuer
4597 certificate is validated separately in this case. Only enabled if
4598 an extended CRL support flag is set: this flag will enable additional
4599 CRL functionality in future.
4601 This work was sponsored by Google.
4604 *) Add support for policy mappings extension.
4606 This work was sponsored by Google.
4609 *) Fixes to pathlength constraint, self issued certificate handling,
4610 policy processing to align with RFC3280 and PKITS tests.
4612 This work was sponsored by Google.
4615 *) Support for name constraints certificate extension. DN, email, DNS
4616 and URI types are currently supported.
4618 This work was sponsored by Google.
4621 *) To cater for systems that provide a pointer-based thread ID rather
4622 than numeric, deprecate the current numeric thread ID mechanism and
4623 replace it with a structure and associated callback type. This
4624 mechanism allows a numeric "hash" to be extracted from a thread ID in
4625 either case, and on platforms where pointers are larger than 'long',
4626 mixing is done to help ensure the numeric 'hash' is usable even if it
4627 can't be guaranteed unique. The default mechanism is to use "&errno"
4628 as a pointer-based thread ID to distinguish between threads.
4630 Applications that want to provide their own thread IDs should now use
4631 CRYPTO_THREADID_set_callback() to register a callback that will call
4632 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
4634 Note that ERR_remove_state() is now deprecated, because it is tied
4635 to the assumption that thread IDs are numeric. ERR_remove_state(0)
4636 to free the current thread's error state should be replaced by
4637 ERR_remove_thread_state(NULL).
4639 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
4640 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
4641 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
4642 application was previously providing a numeric thread callback that
4643 was inappropriate for distinguishing threads, then uniqueness might
4644 have been obtained with &errno that happened immediately in the
4645 intermediate development versions of OpenSSL; this is no longer the
4646 case, the numeric thread callback will now override the automatic use
4648 [Geoff Thorpe, with help from Bodo Moeller]
4650 *) Initial support for different CRL issuing certificates. This covers a
4651 simple case where the self issued certificates in the chain exist and
4652 the real CRL issuer is higher in the existing chain.
4654 This work was sponsored by Google.
4657 *) Removed effectively defunct crypto/store from the build.
4660 *) Revamp of STACK to provide stronger type-checking. Still to come:
4661 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
4662 ASN1_STRING, CONF_VALUE.
4665 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
4666 RAM on SSL connections. This option can save about 34k per idle SSL.
4669 *) Revamp of LHASH to provide stronger type-checking. Still to come:
4670 STACK, TXT_DB, bsearch, qsort.
4673 *) Initial support for Cryptographic Message Syntax (aka CMS) based
4674 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
4675 support for data, signedData, compressedData, digestedData and
4676 encryptedData, envelopedData types included. Scripts to check against
4677 RFC4134 examples draft and interop and consistency checks of many
4678 content types and variants.
4681 *) Add options to enc utility to support use of zlib compression BIO.
4684 *) Extend mk1mf to support importing of options and assembly language
4685 files from Configure script, currently only included in VC-WIN32.
4686 The assembly language rules can now optionally generate the source
4687 files from the associated perl scripts.
4690 *) Implement remaining functionality needed to support GOST ciphersuites.
4691 Interop testing has been performed using CryptoPro implementations.
4692 [Victor B. Wagner <vitus@cryptocom.ru>]
4694 *) s390x assembler pack.
4697 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
4701 *) Implement Opaque PRF Input TLS extension as specified in
4702 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
4703 official specification yet and no extension type assignment by
4704 IANA exists, this extension (for now) will have to be explicitly
4705 enabled when building OpenSSL by providing the extension number
4706 to use. For example, specify an option
4708 -DTLSEXT_TYPE_opaque_prf_input=0x9527
4710 to the "config" or "Configure" script to enable the extension,
4711 assuming extension number 0x9527 (which is a completely arbitrary
4712 and unofficial assignment based on the MD5 hash of the Internet
4713 Draft). Note that by doing so, you potentially lose
4714 interoperability with other TLS implementations since these might
4715 be using the same extension number for other purposes.
4717 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
4718 opaque PRF input value to use in the handshake. This will create
4719 an internal copy of the length-'len' string at 'src', and will
4720 return non-zero for success.
4722 To get more control and flexibility, provide a callback function
4725 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
4726 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
4730 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
4733 Callback function 'cb' will be called in handshakes, and is
4734 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
4735 Argument 'arg' is for application purposes (the value as given to
4736 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
4737 be provided to the callback function). The callback function
4738 has to return non-zero to report success: usually 1 to use opaque
4739 PRF input just if possible, or 2 to enforce use of the opaque PRF
4740 input. In the latter case, the library will abort the handshake
4741 if opaque PRF input is not successfully negotiated.
4743 Arguments 'peerinput' and 'len' given to the callback function
4744 will always be NULL and 0 in the case of a client. A server will
4745 see the client's opaque PRF input through these variables if
4746 available (NULL and 0 otherwise). Note that if the server
4747 provides an opaque PRF input, the length must be the same as the
4748 length of the client's opaque PRF input.
4750 Note that the callback function will only be called when creating
4751 a new session (session resumption can resume whatever was
4752 previously negotiated), and will not be called in SSL 2.0
4753 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
4754 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
4755 for applications that need to enforce opaque PRF input.
4759 *) Update ssl code to support digests other than SHA1+MD5 for handshake
4762 [Victor B. Wagner <vitus@cryptocom.ru>]
4764 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4765 RFC4507bis. The encrypted ticket format is an encrypted encoded
4766 SSL_SESSION structure, that way new session features are automatically
4769 If a client application caches session in an SSL_SESSION structure
4770 support is transparent because tickets are now stored in the encoded
4773 The SSL_CTX structure automatically generates keys for ticket
4774 protection in servers so again support should be possible
4775 with no application modification.
4777 If a client or server wishes to disable RFC4507 support then the option
4778 SSL_OP_NO_TICKET can be set.
4780 Add a TLS extension debugging callback to allow the contents of any client
4781 or server extensions to be examined.
4783 This work was sponsored by Google.
4786 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
4787 OpenSSL should now compile cleanly on gcc 4.2
4788 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
4790 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
4791 support including streaming MAC support: this is required for GOST
4792 ciphersuite support.
4793 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
4795 *) Add option -stream to use PKCS#7 streaming in smime utility. New
4796 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
4797 to output in BER and PEM format.
4800 *) Experimental support for use of HMAC via EVP_PKEY interface. This
4801 allows HMAC to be handled via the EVP_DigestSign*() interface. The
4802 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
4803 ENGINE support for HMAC keys which are unextractable. New -mac and
4804 -macopt options to dgst utility.
4807 *) New option -sigopt to dgst utility. Update dgst to use
4808 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
4809 alternative signing parameters such as X9.31 or PSS in the dgst
4813 *) Change ssl_cipher_apply_rule(), the internal function that does
4814 the work each time a ciphersuite string requests enabling
4815 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
4816 removing ("!foo+bar") a class of ciphersuites: Now it maintains
4817 the order of disabled ciphersuites such that those ciphersuites
4818 that most recently went from enabled to disabled not only stay
4819 in order with respect to each other, but also have higher priority
4820 than other disabled ciphersuites the next time ciphersuites are
4823 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
4824 the same ciphersuites as with "HIGH" alone, but in a specific
4825 order where the PSK ciphersuites come first (since they are the
4826 most recently disabled ciphersuites when "HIGH" is parsed).
4828 Also, change ssl_create_cipher_list() (using this new
4829 functionality) such that between otherwise identical
4830 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
4834 *) Change ssl_create_cipher_list() so that it automatically
4835 arranges the ciphersuites in reasonable order before starting
4836 to process the rule string. Thus, the definition for "DEFAULT"
4837 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
4838 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
4839 This makes it much easier to arrive at a reasonable default order
4840 in applications for which anonymous ciphers are OK (meaning
4841 that you can't actually use DEFAULT).
4842 [Bodo Moeller; suggested by Victor Duchovni]
4844 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
4845 processing) into multiple integers instead of setting
4846 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
4847 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
4848 (These masks as well as the individual bit definitions are hidden
4849 away into the non-exported interface ssl/ssl_locl.h, so this
4850 change to the definition of the SSL_CIPHER structure shouldn't
4851 affect applications.) This give us more bits for each of these
4852 categories, so there is no longer a need to coagulate AES128 and
4853 AES256 into a single algorithm bit, and to coagulate Camellia128
4854 and Camellia256 into a single algorithm bit, which has led to all
4857 Thus, among other things, the kludge introduced in 0.9.7m and
4858 0.9.8e for masking out AES256 independently of AES128 or masking
4859 out Camellia256 independently of AES256 is not needed here in 0.9.9.
4861 With the change, we also introduce new ciphersuite aliases that
4862 so far were missing: "AES128", "AES256", "CAMELLIA128", and
4866 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
4867 Use the leftmost N bytes of the signature input if the input is
4868 larger than the prime q (with N being the size in bytes of q).
4871 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
4872 it yet and it is largely untested.
4875 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
4878 *) Initial incomplete changes to avoid need for function casts in OpenSSL
4879 some compilers (gcc 4.2 and later) reject their use. Safestack is
4880 reimplemented. Update ASN1 to avoid use of legacy functions.
4883 *) Win32/64 targets are linked with Winsock2.
4886 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
4887 to external functions. This can be used to increase CRL handling
4888 efficiency especially when CRLs are very large by (for example) storing
4889 the CRL revoked certificates in a database.
4892 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
4893 new CRLs added to a directory can be used. New command line option
4894 -verify_return_error to s_client and s_server. This causes real errors
4895 to be returned by the verify callback instead of carrying on no matter
4896 what. This reflects the way a "real world" verify callback would behave.
4899 *) GOST engine, supporting several GOST algorithms and public key formats.
4900 Kindly donated by Cryptocom.
4903 *) Partial support for Issuing Distribution Point CRL extension. CRLs
4904 partitioned by DP are handled but no indirect CRL or reason partitioning
4905 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
4906 selected via a scoring technique which handles IDP and AKID in CRLs.
4909 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
4910 will ultimately be used for all verify operations: this will remove the
4911 X509_STORE dependency on certificate verification and allow alternative
4912 lookup methods. X509_STORE based implementations of these two callbacks.
4915 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
4916 Modify get_crl() to find a valid (unexpired) CRL if possible.
4919 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
4920 this would be called X509_CRL_cmp() but that name is already used by
4921 a function that just compares CRL issuer names. Cache several CRL
4922 extensions in X509_CRL structure and cache CRLDP in X509.
4925 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
4926 this maps equivalent X509_NAME structures into a consistent structure.
4927 Name comparison can then be performed rapidly using memcmp().
4930 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
4934 *) Allow digests to supply their own micalg string for S/MIME type using
4935 the ctrl EVP_MD_CTRL_MICALG.
4938 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
4939 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
4940 ctrl. It can then customise the structure before and/or after signing
4944 *) New function OBJ_add_sigid() to allow application defined signature OIDs
4945 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
4946 to free up any added signature OIDs.
4949 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
4950 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
4951 digest and cipher tables. New options added to openssl utility:
4952 list-message-digest-algorithms and list-cipher-algorithms.
4955 *) Change the array representation of binary polynomials: the list
4956 of degrees of non-zero coefficients is now terminated with -1.
4957 Previously it was terminated with 0, which was also part of the
4958 value; thus, the array representation was not applicable to
4959 polynomials where t^0 has coefficient zero. This change makes
4960 the array representation useful in a more general context.
4963 *) Various modifications and fixes to SSL/TLS cipher string
4964 handling. For ECC, the code now distinguishes between fixed ECDH
4965 with RSA certificates on the one hand and with ECDSA certificates
4966 on the other hand, since these are separate ciphersuites. The
4967 unused code for Fortezza ciphersuites has been removed.
4969 For consistency with EDH, ephemeral ECDH is now called "EECDH"
4970 (not "ECDHE"). For consistency with the code for DH
4971 certificates, use of ECDH certificates is now considered ECDH
4972 authentication, not RSA or ECDSA authentication (the latter is
4973 merely the CA's signing algorithm and not actively used in the
4976 The temporary ciphersuite alias "ECCdraft" is no longer
4977 available, and ECC ciphersuites are no longer excluded from "ALL"
4978 and "DEFAULT". The following aliases now exist for RFC 4492
4979 ciphersuites, most of these by analogy with the DH case:
4981 kECDHr - ECDH cert, signed with RSA
4982 kECDHe - ECDH cert, signed with ECDSA
4983 kECDH - ECDH cert (signed with either RSA or ECDSA)
4984 kEECDH - ephemeral ECDH
4985 ECDH - ECDH cert or ephemeral ECDH
4991 AECDH - anonymous ECDH
4992 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
4996 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
4997 Use correct micalg parameters depending on digest(s) in signed message.
5000 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
5001 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
5004 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
5005 an engine to register a method. Add ENGINE lookups for methods and
5006 functional reference processing.
5009 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
5010 EVP_{Sign,Verify}* which allow an application to customise the signature
5014 *) New -resign option to smime utility. This adds one or more signers
5015 to an existing PKCS#7 signedData structure. Also -md option to use an
5016 alternative message digest algorithm for signing.
5019 *) Tidy up PKCS#7 routines and add new functions to make it easier to
5020 create PKCS7 structures containing multiple signers. Update smime
5021 application to support multiple signers.
5024 *) New -macalg option to pkcs12 utility to allow setting of an alternative
5028 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
5029 Reorganize PBE internals to lookup from a static table using NIDs,
5030 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
5031 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
5032 PRF which will be automatically used with PBES2.
5035 *) Replace the algorithm specific calls to generate keys in "req" with the
5039 *) Update PKCS#7 enveloped data routines to use new API. This is now
5040 supported by any public key method supporting the encrypt operation. A
5041 ctrl is added to allow the public key algorithm to examine or modify
5042 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
5046 *) Add a ctrl to asn1 method to allow a public key algorithm to express
5047 a default digest type to use. In most cases this will be SHA1 but some
5048 algorithms (such as GOST) need to specify an alternative digest. The
5049 return value indicates how strong the preference is 1 means optional and
5050 2 is mandatory (that is it is the only supported type). Modify
5051 ASN1_item_sign() to accept a NULL digest argument to indicate it should
5052 use the default md. Update openssl utilities to use the default digest
5053 type for signing if it is not explicitly indicated.
5056 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
5057 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
5058 signing method from the key type. This effectively removes the link
5059 between digests and public key types.
5062 *) Add an OID cross reference table and utility functions. Its purpose is to
5063 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
5064 rsaEncryption. This will allow some of the algorithm specific hackery
5065 needed to use the correct OID to be removed.
5068 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
5069 structures for PKCS7_sign(). They are now set up by the relevant public
5073 *) Add provisional EC pkey method with support for ECDSA and ECDH.
5076 *) Add support for key derivation (agreement) in the API, DH method and
5080 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
5081 public and private key formats. As a side effect these add additional
5082 command line functionality not previously available: DSA signatures can be
5083 generated and verified using pkeyutl and DH key support and generation in
5088 [Oliver Tappe <zooey@hirschkaefer.de>]
5090 *) New make target "install_html_docs" installs HTML renditions of the
5092 [Oliver Tappe <zooey@hirschkaefer.de>]
5094 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
5095 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
5096 support key and parameter generation and add initial key generation
5097 functionality for RSA.
5100 *) Add functions for main EVP_PKEY_method operations. The undocumented
5101 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
5102 EVP_PKEY_{encrypt,decrypt}_old.
5105 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
5106 key API, doesn't do much yet.
5109 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
5110 public key algorithms. New option to openssl utility:
5111 "list-public-key-algorithms" to print out info.
5114 *) Implement the Supported Elliptic Curves Extension for
5115 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5118 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
5119 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
5122 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
5123 utilities such as rsa, dsa, dsaparam etc except they process any key
5127 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
5128 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
5129 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
5133 *) Initial support for pluggable public key ASN1.
5134 De-spaghettify the public key ASN1 handling. Move public and private
5135 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
5136 algorithm specific handling to a single module within the relevant
5137 algorithm directory. Add functions to allow (near) opaque processing
5138 of public and private key structures.
5141 *) Implement the Supported Point Formats Extension for
5142 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5145 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
5146 for the psk identity [hint] and the psk callback functions to the
5147 SSL_SESSION, SSL and SSL_CTX structure.
5150 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
5154 SSL_CTX_use_psk_identity_hint
5155 SSL_get_psk_identity_hint
5156 SSL_get_psk_identity
5157 SSL_use_psk_identity_hint
5159 [Mika Kousa and Pasi Eronen of Nokia Corporation]
5161 *) Add RFC 3161 compliant time stamp request creation, response generation
5162 and response verification functionality.
5163 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
5165 *) Add initial support for TLS extensions, specifically for the server_name
5166 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5167 have new members for a host name. The SSL data structure has an
5168 additional member SSL_CTX *initial_ctx so that new sessions can be
5169 stored in that context to allow for session resumption, even after the
5170 SSL has been switched to a new SSL_CTX in reaction to a client's
5171 server_name extension.
5173 New functions (subject to change):
5175 SSL_get_servername()
5176 SSL_get_servername_type()
5179 New CTRL codes and macros (subject to change):
5181 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5182 - SSL_CTX_set_tlsext_servername_callback()
5183 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5184 - SSL_CTX_set_tlsext_servername_arg()
5185 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5187 openssl s_client has a new '-servername ...' option.
5189 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5190 '-key2 ...', '-servername_fatal' (subject to change). This allows
5191 testing the HostName extension for a specific single host name ('-cert'
5192 and '-key' remain fallbacks for handshakes without HostName
5193 negotiation). If the unrecognized_name alert has to be sent, this by
5194 default is a warning; it becomes fatal with the '-servername_fatal'
5197 [Peter Sylvester, Remy Allais, Christophe Renou]
5199 *) Whirlpool hash implementation is added.
5202 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
5203 bn(64,32). Because of instruction set limitations it doesn't have
5204 any negative impact on performance. This was done mostly in order
5205 to make it possible to share assembler modules, such as bn_mul_mont
5206 implementations, between 32- and 64-bit builds without hassle.
5209 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
5210 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
5214 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
5215 dedicated Montgomery multiplication procedure, is introduced.
5216 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
5217 "64-bit" performance on certain 32-bit targets.
5220 *) New option SSL_OP_NO_COMP to disable use of compression selectively
5221 in SSL structures. New SSL ctrl to set maximum send fragment size.
5222 Save memory by setting the I/O buffer sizes dynamically instead of
5223 using the maximum available value.
5226 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
5227 in addition to the text details.
5230 *) Very, very preliminary EXPERIMENTAL support for printing of general
5231 ASN1 structures. This currently produces rather ugly output and doesn't
5232 handle several customised structures at all.
5235 *) Integrated support for PVK file format and some related formats such
5236 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
5237 these in the 'rsa' and 'dsa' utilities.
5240 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
5243 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
5244 place for the (very old) "NETSCAPE" format certificates which are now
5245 handled using new ASN1 code equivalents.
5248 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
5249 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
5250 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
5253 *) Modify CRL distribution points extension code to print out previously
5254 unsupported fields. Enhance extension setting code to allow setting of
5258 *) Add print and set support for Issuing Distribution Point CRL extension.
5261 *) Change 'Configure' script to enable Camellia by default.
5264 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
5266 *) When rejecting SSL/TLS records due to an incorrect version number, never
5267 update s->server with a new major version number. As of
5268 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
5269 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
5270 the previous behavior could result in a read attempt at NULL when
5271 receiving specific incorrect SSL/TLS records once record payload
5272 protection is active. (CVE-2010-0740)
5273 [Bodo Moeller, Adam Langley <agl@chromium.org>]
5275 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
5276 could be crashed if the relevant tables were not present (e.g. chrooted).
5277 [Tomas Hoger <thoger@redhat.com>]
5279 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
5281 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
5282 [Martin Olsson, Neel Mehta]
5284 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
5285 accommodate for stack sorting, always a write lock!).
5288 *) On some versions of WIN32 Heap32Next is very slow. This can cause
5289 excessive delays in the RAND_poll(): over a minute. As a workaround
5290 include a time check in the inner Heap32Next loop too.
5293 *) The code that handled flushing of data in SSL/TLS originally used the
5294 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
5295 the problem outlined in PR#1949. The fix suggested there however can
5296 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
5297 of Apache). So instead simplify the code to flush unconditionally.
5298 This should be fine since flushing with no data to flush is a no op.
5301 *) Handle TLS versions 2.0 and later properly and correctly use the
5302 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
5303 off ancient servers have a habit of sticking around for a while...
5306 *) Modify compression code so it frees up structures without using the
5307 ex_data callbacks. This works around a problem where some applications
5308 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
5309 restarting) then use compression (e.g. SSL with compression) later.
5310 This results in significant per-connection memory leaks and
5311 has caused some security issues including CVE-2008-1678 and
5315 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
5316 change when encrypting or decrypting.
5319 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
5320 connect and renegotiate with servers which do not support RI.
5321 Until RI is more widely deployed this option is enabled by default.
5324 *) Add "missing" ssl ctrls to clear options and mode.
5327 *) If client attempts to renegotiate and doesn't support RI respond with
5328 a no_renegotiation alert as required by RFC5746. Some renegotiating
5329 TLS clients will continue a connection gracefully when they receive
5330 the alert. Unfortunately OpenSSL mishandled this alert and would hang
5331 waiting for a server hello which it will never receive. Now we treat a
5332 received no_renegotiation alert as a fatal error. This is because
5333 applications requesting a renegotiation might well expect it to succeed
5334 and would have no code in place to handle the server denying it so the
5335 only safe thing to do is to terminate the connection.
5338 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
5339 peer supports secure renegotiation and 0 otherwise. Print out peer
5340 renegotiation support in s_client/s_server.
5343 *) Replace the highly broken and deprecated SPKAC certification method with
5344 the updated NID creation version. This should correctly handle UTF8.
5347 *) Implement RFC5746. Re-enable renegotiation but require the extension
5348 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
5349 turns out to be a bad idea. It has been replaced by
5350 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
5351 SSL_CTX_set_options(). This is really not recommended unless you
5352 know what you are doing.
5353 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
5355 *) Fixes to stateless session resumption handling. Use initial_ctx when
5356 issuing and attempting to decrypt tickets in case it has changed during
5357 servername handling. Use a non-zero length session ID when attempting
5358 stateless session resumption: this makes it possible to determine if
5359 a resumption has occurred immediately after receiving server hello
5360 (several places in OpenSSL subtly assume this) instead of later in
5364 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
5365 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
5366 fixes for a few places where the return code is not checked
5368 [Julia Lawall <julia@diku.dk>]
5370 *) Add --strict-warnings option to Configure script to include devteam
5371 warnings in other configurations.
5374 *) Add support for --libdir option and LIBDIR variable in makefiles. This
5375 makes it possible to install openssl libraries in locations which
5376 have names other than "lib", for example "/usr/lib64" which some
5378 [Steve Henson, based on patch from Jeremy Utley]
5380 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
5381 X690 8.9.12 and can produce some misleading textual output of OIDs.
5382 [Steve Henson, reported by Dan Kaminsky]
5384 *) Delete MD2 from algorithm tables. This follows the recommendation in
5385 several standards that it is not used in new applications due to
5386 several cryptographic weaknesses. For binary compatibility reasons
5387 the MD2 API is still compiled in by default.
5390 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
5394 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
5395 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
5397 [Guenter <lists@gknw.net>]
5399 *) Fix the server certificate chain building code to use X509_verify_cert(),
5400 it used to have an ad-hoc builder which was unable to cope with anything
5401 other than a simple chain.
5402 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
5404 *) Don't check self signed certificate signatures in X509_verify_cert()
5405 by default (a flag can override this): it just wastes time without
5406 adding any security. As a useful side effect self signed root CAs
5407 with non-FIPS digests are now usable in FIPS mode.
5410 *) In dtls1_process_out_of_seq_message() the check if the current message
5411 is already buffered was missing. For every new message was memory
5412 allocated, allowing an attacker to perform an denial of service attack
5413 with sending out of seq handshake messages until there is no memory
5414 left. Additionally every future message was buffered, even if the
5415 sequence number made no sense and would be part of another handshake.
5416 So only messages with sequence numbers less than 10 in advance will be
5417 buffered. (CVE-2009-1378)
5418 [Robin Seggelmann, discovered by Daniel Mentz]
5420 *) Records are buffered if they arrive with a future epoch to be
5421 processed after finishing the corresponding handshake. There is
5422 currently no limitation to this buffer allowing an attacker to perform
5423 a DOS attack with sending records with future epochs until there is no
5424 memory left. This patch adds the pqueue_size() function to determine
5425 the size of a buffer and limits the record buffer to 100 entries.
5427 [Robin Seggelmann, discovered by Daniel Mentz]
5429 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
5430 parent structure is freed. (CVE-2009-1379)
5433 *) Handle non-blocking I/O properly in SSL_shutdown() call.
5434 [Darryl Miles <darryl-mailinglists@netbauds.net>]
5437 [Ilya O. <vrghost@gmail.com>]
5439 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
5441 *) Disable renegotiation completely - this fixes a severe security
5442 problem (CVE-2009-3555) at the cost of breaking all
5443 renegotiation. Renegotiation can be re-enabled by setting
5444 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
5445 run-time. This is really not recommended unless you know what
5449 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
5451 *) Don't set val to NULL when freeing up structures, it is freed up by
5452 underlying code. If sizeof(void *) > sizeof(long) this can result in
5453 zeroing past the valid field. (CVE-2009-0789)
5454 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
5456 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
5457 checked correctly. This would allow some invalid signed attributes to
5458 appear to verify correctly. (CVE-2009-0591)
5459 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5461 *) Reject UniversalString and BMPString types with invalid lengths. This
5462 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
5463 a legal length. (CVE-2009-0590)
5466 *) Set S/MIME signing as the default purpose rather than setting it
5467 unconditionally. This allows applications to override it at the store
5471 *) Permit restricted recursion of ASN1 strings. This is needed in practice
5472 to handle some structures.
5475 *) Improve efficiency of mem_gets: don't search whole buffer each time
5477 [Jeremy Shapiro <jnshapir@us.ibm.com>]
5479 *) New -hex option for openssl rand.
5482 *) Print out UTF8String and NumericString when parsing ASN1.
5485 *) Support NumericString type for name components.
5488 *) Allow CC in the environment to override the automatically chosen
5489 compiler. Note that nothing is done to ensure flags work with the
5493 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
5495 *) Properly check EVP_VerifyFinal() and similar return values
5497 [Ben Laurie, Bodo Moeller, Google Security Team]
5499 *) Enable TLS extensions by default.
5502 *) Allow the CHIL engine to be loaded, whether the application is
5503 multithreaded or not. (This does not release the developer from the
5504 obligation to set up the dynamic locking callbacks.)
5505 [Sander Temme <sander@temme.net>]
5507 *) Use correct exit code if there is an error in dgst command.
5508 [Steve Henson; problem pointed out by Roland Dirlewanger]
5510 *) Tweak Configure so that you need to say "experimental-jpake" to enable
5511 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
5514 *) Add experimental JPAKE support, including demo authentication in
5515 s_client and s_server.
5518 *) Set the comparison function in v3_addr_canonize().
5519 [Rob Austein <sra@hactrn.net>]
5521 *) Add support for XMPP STARTTLS in s_client.
5522 [Philip Paeps <philip@freebsd.org>]
5524 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
5525 to ensure that even with this option, only ciphersuites in the
5526 server's preference list will be accepted. (Note that the option
5527 applies only when resuming a session, so the earlier behavior was
5528 just about the algorithm choice for symmetric cryptography.)
5531 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
5533 *) Fix NULL pointer dereference if a DTLS server received
5534 ChangeCipherSpec as first record (CVE-2009-1386).
5537 *) Fix a state transition in s3_srvr.c and d1_srvr.c
5538 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
5541 *) The fix in 0.9.8c that supposedly got rid of unsafe
5542 double-checked locking was incomplete for RSA blinding,
5543 addressing just one layer of what turns out to have been
5544 doubly unsafe triple-checked locking.
5546 So now fix this for real by retiring the MONT_HELPER macro
5547 in crypto/rsa/rsa_eay.c.
5549 [Bodo Moeller; problem pointed out by Marius Schilder]
5551 *) Various precautionary measures:
5553 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
5555 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
5556 (NB: This would require knowledge of the secret session ticket key
5557 to exploit, in which case you'd be SOL either way.)
5559 - Change bn_nist.c so that it will properly handle input BIGNUMs
5560 outside the expected range.
5562 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
5565 [Neel Mehta, Bodo Moeller]
5567 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
5568 the load fails. Useful for distros.
5569 [Ben Laurie and the FreeBSD team]
5571 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
5574 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
5577 *) Expand ENGINE to support engine supplied SSL client certificate functions.
5579 This work was sponsored by Logica.
5582 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
5583 keystores. Support for SSL/TLS client authentication too.
5584 Not compiled unless enable-capieng specified to Configure.
5586 This work was sponsored by Logica.
5589 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
5590 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
5591 attribute creation routines such as certificate requests and PKCS#12
5595 Changes between 0.9.8g and 0.9.8h [28 May 2008]
5597 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
5598 handshake which could lead to a client crash as found using the
5599 Codenomicon TLS test suite (CVE-2008-1672)
5600 [Steve Henson, Mark Cox]
5602 *) Fix double free in TLS server name extensions which could lead to
5603 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
5606 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
5608 Clear the error queue to ensure that error entries left from
5609 older function calls do not interfere with the correct operation.
5610 [Lutz Jaenicke, Erik de Castro Lopo]
5612 *) Remove root CA certificates of commercial CAs:
5614 The OpenSSL project does not recommend any specific CA and does not
5615 have any policy with respect to including or excluding any CA.
5616 Therefore it does not make any sense to ship an arbitrary selection
5617 of root CA certificates with the OpenSSL software.
5620 *) RSA OAEP patches to fix two separate invalid memory reads.
5621 The first one involves inputs when 'lzero' is greater than
5622 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
5623 before the beginning of from). The second one involves inputs where
5624 the 'db' section contains nothing but zeroes (there is a one-byte
5625 invalid read after the end of 'db').
5626 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5628 *) Partial backport from 0.9.9-dev:
5630 Introduce bn_mul_mont (dedicated Montgomery multiplication
5631 procedure) as a candidate for BIGNUM assembler implementation.
5632 While 0.9.9-dev uses assembler for various architectures, only
5633 x86_64 is available by default here in the 0.9.8 branch, and
5634 32-bit x86 is available through a compile-time setting.
5636 To try the 32-bit x86 assembler implementation, use Configure
5637 option "enable-montasm" (which exists only for this backport).
5639 As "enable-montasm" for 32-bit x86 disclaims code stability
5640 anyway, in this constellation we activate additional code
5641 backported from 0.9.9-dev for further performance improvements,
5642 namely BN_from_montgomery_word. (To enable this otherwise,
5643 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
5645 [Andy Polyakov (backport partially by Bodo Moeller)]
5647 *) Add TLS session ticket callback. This allows an application to set
5648 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
5649 values. This is useful for key rollover for example where several key
5650 sets may exist with different names.
5653 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
5654 This was broken until now in 0.9.8 releases, such that the only way
5655 a registered ENGINE could be used (assuming it initialises
5656 successfully on the host) was to explicitly set it as the default
5657 for the relevant algorithms. This is in contradiction with 0.9.7
5658 behaviour and the documentation. With this fix, when an ENGINE is
5659 registered into a given algorithm's table of implementations, the
5660 'uptodate' flag is reset so that auto-discovery will be used next
5661 time a new context for that algorithm attempts to select an
5663 [Ian Lister (tweaked by Geoff Thorpe)]
5665 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
5666 implementation in the following ways:
5668 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
5671 Lack of BER streaming support means one pass streaming processing is
5672 only supported if data is detached: setting the streaming flag is
5673 ignored for embedded content.
5675 CMS support is disabled by default and must be explicitly enabled
5676 with the enable-cms configuration option.
5679 *) Update the GMP engine glue to do direct copies between BIGNUM and
5680 mpz_t when openssl and GMP use the same limb size. Otherwise the
5681 existing "conversion via a text string export" trick is still used.
5682 [Paul Sheer <paulsheer@gmail.com>]
5684 *) Zlib compression BIO. This is a filter BIO which compressed and
5685 uncompresses any data passed through it.
5688 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
5689 RFC3394 compatible AES key wrapping.
5692 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
5693 sets string data without copying. X509_ALGOR_set0() and
5694 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
5695 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
5696 from an X509_ATTRIBUTE structure optionally checking it occurs only
5697 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
5701 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
5702 to get the expected BN_FLG_CONSTTIME behavior.
5703 [Bodo Moeller (Google)]
5707 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
5708 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
5709 - added some more tests to do_tests.pl
5710 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
5711 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
5712 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
5713 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
5714 - various changes to netware.pl to enable gcc-cross builds on Win32
5716 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
5717 - various changes to fix missing prototype warnings
5718 - fixed x86nasm.pl to create correct asm files for NASM COFF output
5719 - added AES, WHIRLPOOL and CPUID assembler code to build files
5720 - added missing AES assembler make rules to mk1mf.pl
5721 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
5722 [Guenter Knauf <eflash@gmx.net>]
5724 *) Implement certificate status request TLS extension defined in RFC3546.
5725 A client can set the appropriate parameters and receive the encoded
5726 OCSP response via a callback. A server can query the supplied parameters
5727 and set the encoded OCSP response in the callback. Add simplified examples
5728 to s_client and s_server.
5731 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
5733 *) Fix various bugs:
5734 + Binary incompatibility of ssl_ctx_st structure
5735 + DTLS interoperation with non-compliant servers
5736 + Don't call get_session_cb() without proposed session
5737 + Fix ia64 assembler code
5738 [Andy Polyakov, Steve Henson]
5740 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
5742 *) DTLS Handshake overhaul. There were longstanding issues with
5743 OpenSSL DTLS implementation, which were making it impossible for
5744 RFC 4347 compliant client to communicate with OpenSSL server.
5745 Unfortunately just fixing these incompatibilities would "cut off"
5746 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
5747 server keeps tolerating non RFC compliant syntax. The opposite is
5748 not true, 0.9.8f client can not communicate with earlier server.
5749 This update even addresses CVE-2007-4995.
5752 *) Changes to avoid need for function casts in OpenSSL: some compilers
5753 (gcc 4.2 and later) reject their use.
5754 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
5757 *) Add RFC4507 support to OpenSSL. This includes the corrections in
5758 RFC4507bis. The encrypted ticket format is an encrypted encoded
5759 SSL_SESSION structure, that way new session features are automatically
5762 If a client application caches session in an SSL_SESSION structure
5763 support is transparent because tickets are now stored in the encoded
5766 The SSL_CTX structure automatically generates keys for ticket
5767 protection in servers so again support should be possible
5768 with no application modification.
5770 If a client or server wishes to disable RFC4507 support then the option
5771 SSL_OP_NO_TICKET can be set.
5773 Add a TLS extension debugging callback to allow the contents of any client
5774 or server extensions to be examined.
5776 This work was sponsored by Google.
5779 *) Add initial support for TLS extensions, specifically for the server_name
5780 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5781 have new members for a host name. The SSL data structure has an
5782 additional member SSL_CTX *initial_ctx so that new sessions can be
5783 stored in that context to allow for session resumption, even after the
5784 SSL has been switched to a new SSL_CTX in reaction to a client's
5785 server_name extension.
5787 New functions (subject to change):
5789 SSL_get_servername()
5790 SSL_get_servername_type()
5793 New CTRL codes and macros (subject to change):
5795 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5796 - SSL_CTX_set_tlsext_servername_callback()
5797 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5798 - SSL_CTX_set_tlsext_servername_arg()
5799 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5801 openssl s_client has a new '-servername ...' option.
5803 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5804 '-key2 ...', '-servername_fatal' (subject to change). This allows
5805 testing the HostName extension for a specific single host name ('-cert'
5806 and '-key' remain fallbacks for handshakes without HostName
5807 negotiation). If the unrecognized_name alert has to be sent, this by
5808 default is a warning; it becomes fatal with the '-servername_fatal'
5811 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
5813 *) Add AES and SSE2 assembly language support to VC++ build.
5816 *) Mitigate attack on final subtraction in Montgomery reduction.
5819 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
5820 (which previously caused an internal error).
5823 *) Squeeze another 10% out of IGE mode when in != out.
5826 *) AES IGE mode speedup.
5827 [Dean Gaudet (Google)]
5829 *) Add the Korean symmetric 128-bit cipher SEED (see
5830 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
5831 add SEED ciphersuites from RFC 4162:
5833 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
5834 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
5835 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
5836 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
5838 To minimize changes between patchlevels in the OpenSSL 0.9.8
5839 series, SEED remains excluded from compilation unless OpenSSL
5840 is configured with 'enable-seed'.
5841 [KISA, Bodo Moeller]
5843 *) Mitigate branch prediction attacks, which can be practical if a
5844 single processor is shared, allowing a spy process to extract
5845 information. For detailed background information, see
5846 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
5847 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
5848 and Necessary Software Countermeasures"). The core of the change
5849 are new versions BN_div_no_branch() and
5850 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
5851 respectively, which are slower, but avoid the security-relevant
5852 conditional branches. These are automatically called by BN_div()
5853 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
5854 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
5855 remove a conditional branch.
5857 BN_FLG_CONSTTIME is the new name for the previous
5858 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
5859 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
5860 in the exponent causes BN_mod_exp_mont() to use the alternative
5861 implementation in BN_mod_exp_mont_consttime().) The old name
5862 remains as a deprecated alias.
5864 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
5865 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
5866 constant-time implementations for more than just exponentiation.
5867 Here too the old name is kept as a deprecated alias.
5869 BN_BLINDING_new() will now use BN_dup() for the modulus so that
5870 the BN_BLINDING structure gets an independent copy of the
5871 modulus. This means that the previous "BIGNUM *m" argument to
5872 BN_BLINDING_new() and to BN_BLINDING_create_param() now
5873 essentially becomes "const BIGNUM *m", although we can't actually
5874 change this in the header file before 0.9.9. It allows
5875 RSA_setup_blinding() to use BN_with_flags() on the modulus to
5876 enable BN_FLG_CONSTTIME.
5878 [Matthew D Wood (Intel Corp)]
5880 *) In the SSL/TLS server implementation, be strict about session ID
5881 context matching (which matters if an application uses a single
5882 external cache for different purposes). Previously,
5883 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
5884 set. This did ensure strict client verification, but meant that,
5885 with applications using a single external cache for quite
5886 different requirements, clients could circumvent ciphersuite
5887 restrictions for a given session ID context by starting a session
5888 in a different context.
5891 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5892 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5893 authentication-only ciphersuites.
5896 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
5897 not complete and could lead to a possible single byte overflow
5898 (CVE-2007-5135) [Ben Laurie]
5900 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
5902 *) Since AES128 and AES256 (and similarly Camellia128 and
5903 Camellia256) share a single mask bit in the logic of
5904 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5905 kludge to work properly if AES128 is available and AES256 isn't
5906 (or if Camellia128 is available and Camellia256 isn't).
5909 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
5910 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
5911 When a point or a seed is encoded in a BIT STRING, we need to
5912 prevent the removal of trailing zero bits to get the proper DER
5913 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
5914 of a NamedBitList, for which trailing 0 bits need to be removed.)
5917 *) Have SSL/TLS server implementation tolerate "mismatched" record
5918 protocol version while receiving ClientHello even if the
5919 ClientHello is fragmented. (The server can't insist on the
5920 particular protocol version it has chosen before the ServerHello
5921 message has informed the client about his choice.)
5924 *) Add RFC 3779 support.
5925 [Rob Austein for ARIN, Ben Laurie]
5927 *) Load error codes if they are not already present instead of using a
5928 static variable. This allows them to be cleanly unloaded and reloaded.
5929 Improve header file function name parsing.
5932 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
5933 or CAPABILITY handshake as required by RFCs.
5936 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
5938 *) Introduce limits to prevent malicious keys being able to
5939 cause a denial of service. (CVE-2006-2940)
5940 [Steve Henson, Bodo Moeller]
5942 *) Fix ASN.1 parsing of certain invalid structures that can result
5943 in a denial of service. (CVE-2006-2937) [Steve Henson]
5945 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5946 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5948 *) Fix SSL client code which could crash if connecting to a
5949 malicious SSLv2 server. (CVE-2006-4343)
5950 [Tavis Ormandy and Will Drewry, Google Security Team]
5952 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
5953 match only those. Before that, "AES256-SHA" would be interpreted
5954 as a pattern and match "AES128-SHA" too (since AES128-SHA got
5955 the same strength classification in 0.9.7h) as we currently only
5956 have a single AES bit in the ciphersuite description bitmap.
5957 That change, however, also applied to ciphersuite strings such as
5958 "RC4-MD5" that intentionally matched multiple ciphersuites --
5959 namely, SSL 2.0 ciphersuites in addition to the more common ones
5960 from SSL 3.0/TLS 1.0.
5962 So we change the selection algorithm again: Naming an explicit
5963 ciphersuite selects this one ciphersuite, and any other similar
5964 ciphersuite (same bitmap) from *other* protocol versions.
5965 Thus, "RC4-MD5" again will properly select both the SSL 2.0
5966 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
5968 Since SSL 2.0 does not have any ciphersuites for which the
5969 128/256 bit distinction would be relevant, this works for now.
5970 The proper fix will be to use different bits for AES128 and
5971 AES256, which would have avoided the problems from the beginning;
5972 however, bits are scarce, so we can only do this in a new release
5973 (not just a patchlevel) when we can change the SSL_CIPHER
5974 definition to split the single 'unsigned long mask' bitmap into
5975 multiple values to extend the available space.
5979 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
5981 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5982 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5984 *) Add AES IGE and biIGE modes.
5987 *) Change the Unix randomness entropy gathering to use poll() when
5988 possible instead of select(), since the latter has some
5989 undesirable limitations.
5990 [Darryl Miles via Richard Levitte and Bodo Moeller]
5992 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
5993 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
5994 cannot be implicitly activated as part of, e.g., the "AES" alias.
5995 However, please upgrade to OpenSSL 0.9.9[-dev] for
5996 non-experimental use of the ECC ciphersuites to get TLS extension
5997 support, which is required for curve and point format negotiation
5998 to avoid potential handshake problems.
6001 *) Disable rogue ciphersuites:
6003 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
6004 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
6005 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
6007 The latter two were purportedly from
6008 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
6011 Also deactivate the remaining ciphersuites from
6012 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
6013 unofficial, and the ID has long expired.
6016 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
6017 dual-core machines) and other potential thread-safety issues.
6020 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
6021 versions), which is now available for royalty-free use
6022 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
6023 Also, add Camellia TLS ciphersuites from RFC 4132.
6025 To minimize changes between patchlevels in the OpenSSL 0.9.8
6026 series, Camellia remains excluded from compilation unless OpenSSL
6027 is configured with 'enable-camellia'.
6030 *) Disable the padding bug check when compression is in use. The padding
6031 bug check assumes the first packet is of even length, this is not
6032 necessarily true if compression is enabled and can result in false
6033 positives causing handshake failure. The actual bug test is ancient
6034 code so it is hoped that implementations will either have fixed it by
6035 now or any which still have the bug do not support compression.
6038 Changes between 0.9.8a and 0.9.8b [04 May 2006]
6040 *) When applying a cipher rule check to see if string match is an explicit
6041 cipher suite and only match that one cipher suite if it is.
6044 *) Link in manifests for VC++ if needed.
6045 [Austin Ziegler <halostatue@gmail.com>]
6047 *) Update support for ECC-based TLS ciphersuites according to
6048 draft-ietf-tls-ecc-12.txt with proposed changes (but without
6049 TLS extensions, which are supported starting with the 0.9.9
6050 branch, not in the OpenSSL 0.9.8 branch).
6053 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
6054 opaque EVP_CIPHER_CTX handling.
6057 *) Fixes and enhancements to zlib compression code. We now only use
6058 "zlib1.dll" and use the default __cdecl calling convention on Win32
6059 to conform with the standards mentioned here:
6060 http://www.zlib.net/DLL_FAQ.txt
6061 Static zlib linking now works on Windows and the new --with-zlib-include
6062 --with-zlib-lib options to Configure can be used to supply the location
6063 of the headers and library. Gracefully handle case where zlib library
6067 *) Several fixes and enhancements to the OID generation code. The old code
6068 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
6069 handle numbers larger than ULONG_MAX, truncated printing and had a
6070 non standard OBJ_obj2txt() behaviour.
6073 *) Add support for building of engines under engine/ as shared libraries
6074 under VC++ build system.
6077 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
6078 Hopefully, we will not see any false combination of paths any more.
6081 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
6083 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
6084 (part of SSL_OP_ALL). This option used to disable the
6085 countermeasure against man-in-the-middle protocol-version
6086 rollback in the SSL 2.0 server implementation, which is a bad
6087 idea. (CVE-2005-2969)
6089 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
6090 for Information Security, National Institute of Advanced Industrial
6091 Science and Technology [AIST], Japan)]
6093 *) Add two function to clear and return the verify parameter flags.
6096 *) Keep cipherlists sorted in the source instead of sorting them at
6097 runtime, thus removing the need for a lock.
6100 *) Avoid some small subgroup attacks in Diffie-Hellman.
6101 [Nick Mathewson and Ben Laurie]
6103 *) Add functions for well-known primes.
6106 *) Extended Windows CE support.
6107 [Satoshi Nakamura and Andy Polyakov]
6109 *) Initialize SSL_METHOD structures at compile time instead of during
6110 runtime, thus removing the need for a lock.
6113 *) Make PKCS7_decrypt() work even if no certificate is supplied by
6114 attempting to decrypt each encrypted key in turn. Add support to
6118 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
6120 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
6123 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
6126 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
6127 key into the same file any more.
6130 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
6133 *) Add -utf8 command line and config file option to 'ca'.
6134 [Stefan <stf@udoma.org]
6136 *) Removed the macro des_crypt(), as it seems to conflict with some
6137 libraries. Use DES_crypt().
6140 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
6141 involves renaming the source and generated shared-libs for
6142 both. The engines will accept the corrected or legacy ids
6143 ('ncipher' and '4758_cca' respectively) when binding. NB,
6144 this only applies when building 'shared'.
6145 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
6147 *) Add attribute functions to EVP_PKEY structure. Modify
6148 PKCS12_create() to recognize a CSP name attribute and
6149 use it. Make -CSP option work again in pkcs12 utility.
6152 *) Add new functionality to the bn blinding code:
6153 - automatic re-creation of the BN_BLINDING parameters after
6154 a fixed number of uses (currently 32)
6155 - add new function for parameter creation
6156 - introduce flags to control the update behaviour of the
6157 BN_BLINDING parameters
6158 - hide BN_BLINDING structure
6159 Add a second BN_BLINDING slot to the RSA structure to improve
6160 performance when a single RSA object is shared among several
6164 *) Add support for DTLS.
6165 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
6167 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
6168 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
6171 *) Remove buggy and incomplete DH cert support from
6172 ssl/ssl_rsa.c and ssl/s3_both.c
6175 *) Use SHA-1 instead of MD5 as the default digest algorithm for
6176 the apps/openssl applications.
6179 *) Compile clean with "-Wall -Wmissing-prototypes
6180 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
6181 DEBUG_SAFESTACK must also be set.
6184 *) Change ./Configure so that certain algorithms can be disabled by default.
6185 The new counterpiece to "no-xxx" is "enable-xxx".
6187 The patented RC5 and MDC2 algorithms will now be disabled unless
6188 "enable-rc5" and "enable-mdc2", respectively, are specified.
6190 (IDEA remains enabled despite being patented. This is because IDEA
6191 is frequently required for interoperability, and there is no license
6192 fee for non-commercial use. As before, "no-idea" can be used to
6193 avoid this algorithm.)
6197 *) Add processing of proxy certificates (see RFC 3820). This work was
6198 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
6199 EGEE (Enabling Grids for E-science in Europe).
6202 *) RC4 performance overhaul on modern architectures/implementations, such
6203 as Intel P4, IA-64 and AMD64.
6206 *) New utility extract-section.pl. This can be used specify an alternative
6207 section number in a pod file instead of having to treat each file as
6208 a separate case in Makefile. This can be done by adding two lines to the
6211 =for comment openssl_section:XXX
6213 The blank line is mandatory.
6217 *) New arguments -certform, -keyform and -pass for s_client and s_server
6218 to allow alternative format key and certificate files and passphrase
6222 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
6223 update associated structures and add various utility functions.
6225 Add new policy related verify parameters, include policy checking in
6226 standard verify code. Enhance 'smime' application with extra parameters
6227 to support policy checking and print out.
6230 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
6231 Nehemiah processors. These extensions support AES encryption in hardware
6232 as well as RNG (though RNG support is currently disabled).
6233 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
6235 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
6238 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
6239 [Andy Polyakov and a number of other people]
6241 *) Improved PowerPC platform support. Most notably BIGNUM assembler
6242 implementation contributed by IBM.
6243 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
6245 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
6246 exponent rather than 'unsigned long'. There is a corresponding change to
6247 the new 'rsa_keygen' element of the RSA_METHOD structure.
6248 [Jelte Jansen, Geoff Thorpe]
6250 *) Functionality for creating the initial serial number file is now
6251 moved from CA.pl to the 'ca' utility with a new option -create_serial.
6253 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
6254 number file to 1, which is bound to cause problems. To avoid
6255 the problems while respecting compatibility between different 0.9.7
6256 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
6257 CA.pl for serial number initialization. With the new release 0.9.8,
6258 we can fix the problem directly in the 'ca' utility.)
6261 *) Reduced header interdependencies by declaring more opaque objects in
6262 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
6263 give fewer recursive includes, which could break lazy source code - so
6264 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
6265 developers should define this symbol when building and using openssl to
6266 ensure they track the recommended behaviour, interfaces, [etc], but
6267 backwards-compatible behaviour prevails when this isn't defined.
6270 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
6273 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
6274 This will generate a random key of the appropriate length based on the
6275 cipher context. The EVP_CIPHER can provide its own random key generation
6276 routine to support keys of a specific form. This is used in the des and
6277 3des routines to generate a key of the correct parity. Update S/MIME
6278 code to use new functions and hence generate correct parity DES keys.
6279 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
6280 valid (weak or incorrect parity).
6283 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
6284 as looking them up. This is useful when the verified structure may contain
6285 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
6286 present unless the new PKCS7_NO_CRL flag is asserted.
6289 *) Extend ASN1 oid configuration module. It now additionally accepts the
6292 shortName = some long name, 1.2.3.4
6295 *) Reimplemented the BN_CTX implementation. There is now no more static
6296 limitation on the number of variables it can handle nor the depth of the
6297 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
6298 information can now expand as required, and rather than having a single
6299 static array of bignums, BN_CTX now uses a linked-list of such arrays
6300 allowing it to expand on demand whilst maintaining the usefulness of
6301 BN_CTX's "bundling".
6304 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
6305 to allow all RSA operations to function using a single BN_CTX.
6308 *) Preliminary support for certificate policy evaluation and checking. This
6309 is initially intended to pass the tests outlined in "Conformance Testing
6310 of Relying Party Client Certificate Path Processing Logic" v1.07.
6313 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
6314 remained unused and not that useful. A variety of other little bignum
6315 tweaks and fixes have also been made continuing on from the audit (see
6319 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
6320 associated ASN1, EVP and SSL functions and old ASN1 macros.
6323 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
6324 and this should never fail. So the return value from the use of
6325 BN_set_word() (which can fail due to needless expansion) is now deprecated;
6326 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
6329 *) BN_CTX_get() should return zero-valued bignums, providing the same
6330 initialised value as BN_new().
6331 [Geoff Thorpe, suggested by Ulf Möller]
6333 *) Support for inhibitAnyPolicy certificate extension.
6336 *) An audit of the BIGNUM code is underway, for which debugging code is
6337 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
6338 is considered valid when processing BIGNUMs, and causes execution to
6339 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
6340 further steps are taken to deliberately pollute unused data in BIGNUM
6341 structures to try and expose faulty code further on. For now, openssl will
6342 (in its default mode of operation) continue to tolerate the inconsistent
6343 forms that it has tolerated in the past, but authors and packagers should
6344 consider trying openssl and their own applications when compiled with
6345 these debugging symbols defined. It will help highlight potential bugs in
6346 their own code, and will improve the test coverage for OpenSSL itself. At
6347 some point, these tighter rules will become openssl's default to improve
6348 maintainability, though the assert()s and other overheads will remain only
6349 in debugging configurations. See bn.h for more details.
6350 [Geoff Thorpe, Nils Larsch, Ulf Möller]
6352 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
6353 that can only be obtained through BN_CTX_new() (which implicitly
6354 initialises it). The presence of this function only made it possible
6355 to overwrite an existing structure (and cause memory leaks).
6358 *) Because of the callback-based approach for implementing LHASH as a
6359 template type, lh_insert() adds opaque objects to hash-tables and
6360 lh_doall() or lh_doall_arg() are typically used with a destructor callback
6361 to clean up those corresponding objects before destroying the hash table
6362 (and losing the object pointers). So some over-zealous constifications in
6363 LHASH have been relaxed so that lh_insert() does not take (nor store) the
6364 objects as "const" and the lh_doall[_arg] callback wrappers are not
6365 prototyped to have "const" restrictions on the object pointers they are
6366 given (and so aren't required to cast them away any more).
6369 *) The tmdiff.h API was so ugly and minimal that our own timing utility
6370 (speed) prefers to use its own implementation. The two implementations
6371 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
6372 its object type properly exposed (MS_TM) instead of casting to/from "char
6373 *". This may still change yet if someone realises MS_TM and "ms_time_***"
6374 aren't necessarily the greatest nomenclatures - but this is what was used
6375 internally to the implementation so I've used that for now.
6378 *) Ensure that deprecated functions do not get compiled when
6379 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
6380 the self-tests were still using deprecated key-generation functions so
6381 these have been updated also.
6384 *) Reorganise PKCS#7 code to separate the digest location functionality
6385 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
6386 New function PKCS7_set_digest() to set the digest type for PKCS#7
6387 digestedData type. Add additional code to correctly generate the
6388 digestedData type and add support for this type in PKCS7 initialization
6392 *) New function PKCS7_set0_type_other() this initializes a PKCS7
6393 structure of type "other".
6396 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
6397 sure the loop does correctly stop and breaking ("division by zero")
6398 modulus operations are not performed. The (pre-generated) prime
6399 table crypto/bn/bn_prime.h was already correct, but it could not be
6400 re-generated on some platforms because of the "division by zero"
6401 situation in the script.
6402 [Ralf S. Engelschall]
6404 *) Update support for ECC-based TLS ciphersuites according to
6405 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
6406 SHA-1 now is only used for "small" curves (where the
6407 representation of a field element takes up to 24 bytes); for
6408 larger curves, the field element resulting from ECDH is directly
6409 used as premaster secret.
6410 [Douglas Stebila (Sun Microsystems Laboratories)]
6412 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
6413 curve secp160r1 to the tests.
6414 [Douglas Stebila (Sun Microsystems Laboratories)]
6416 *) Add the possibility to load symbols globally with DSO.
6417 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
6419 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
6420 control of the error stack.
6423 *) Add support for STORE in ENGINE.
6426 *) Add the STORE type. The intention is to provide a common interface
6427 to certificate and key stores, be they simple file-based stores, or
6428 HSM-type store, or LDAP stores, or...
6429 NOTE: The code is currently UNTESTED and isn't really used anywhere.
6432 *) Add a generic structure called OPENSSL_ITEM. This can be used to
6433 pass a list of arguments to any function as well as provide a way
6434 for a function to pass data back to the caller.
6437 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
6438 works like BUF_strdup() but can be used to duplicate a portion of
6439 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
6443 *) Add the function sk_find_ex() which works like sk_find(), but will
6444 return an index to an element even if an exact match couldn't be
6445 found. The index is guaranteed to point at the element where the
6446 searched-for key would be inserted to preserve sorting order.
6449 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
6450 takes an extra flags argument for optional functionality. Currently,
6451 the following flags are defined:
6453 OBJ_BSEARCH_VALUE_ON_NOMATCH
6454 This one gets OBJ_bsearch_ex() to return a pointer to the first
6455 element where the comparing function returns a negative or zero
6458 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
6459 This one gets OBJ_bsearch_ex() to return a pointer to the first
6460 element where the comparing function returns zero. This is useful
6461 if there are more than one element where the comparing function
6465 *) Make it possible to create self-signed certificates with 'openssl ca'
6466 in such a way that the self-signed certificate becomes part of the
6467 CA database and uses the same mechanisms for serial number generation
6468 as all other certificate signing. The new flag '-selfsign' enables
6469 this functionality. Adapt CA.sh and CA.pl.in.
6472 *) Add functionality to check the public key of a certificate request
6473 against a given private. This is useful to check that a certificate
6474 request can be signed by that key (self-signing).
6477 *) Make it possible to have multiple active certificates with the same
6478 subject in the CA index file. This is done only if the keyword
6479 'unique_subject' is set to 'no' in the main CA section (default
6480 if 'CA_default') of the configuration file. The value is saved
6481 with the database itself in a separate index attribute file,
6482 named like the index file with '.attr' appended to the name.
6485 *) Generate multi-valued AVAs using '+' notation in config files for
6489 *) Support for nameConstraints certificate extension.
6492 *) Support for policyConstraints certificate extension.
6495 *) Support for policyMappings certificate extension.
6498 *) Make sure the default DSA_METHOD implementation only uses its
6499 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
6500 and change its own handlers to be NULL so as to remove unnecessary
6501 indirection. This lets alternative implementations fallback to the
6502 default implementation more easily.
6505 *) Support for directoryName in GeneralName related extensions
6509 *) Make it possible to link applications using Makefile.shared.
6510 Make that possible even when linking against static libraries!
6513 *) Support for single pass processing for S/MIME signing. This now
6514 means that S/MIME signing can be done from a pipe, in addition
6515 cleartext signing (multipart/signed type) is effectively streaming
6516 and the signed data does not need to be all held in memory.
6518 This is done with a new flag PKCS7_STREAM. When this flag is set
6519 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
6520 is done after the data is output (and digests calculated) in
6521 SMIME_write_PKCS7().
6524 *) Add full support for -rpath/-R, both in shared libraries and
6525 applications, at least on the platforms where it's known how
6529 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
6530 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
6531 will now compute a table of multiples of the generator that
6532 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
6533 faster (notably in the case of a single point multiplication,
6534 scalar * generator).
6535 [Nils Larsch, Bodo Moeller]
6537 *) IPv6 support for certificate extensions. The various extensions
6538 which use the IP:a.b.c.d can now take IPv6 addresses using the
6539 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
6543 *) Added an ENGINE that implements RSA by performing private key
6544 exponentiations with the GMP library. The conversions to and from
6545 GMP's mpz_t format aren't optimised nor are any montgomery forms
6546 cached, and on x86 it appears OpenSSL's own performance has caught up.
6547 However there are likely to be other architectures where GMP could
6548 provide a boost. This ENGINE is not built in by default, but it can be
6549 specified at Configure time and should be accompanied by the necessary
6550 linker additions, eg;
6551 ./config -DOPENSSL_USE_GMP -lgmp
6554 *) "openssl engine" will not display ENGINE/DSO load failure errors when
6555 testing availability of engines with "-t" - the old behaviour is
6556 produced by increasing the feature's verbosity with "-tt".
6559 *) ECDSA routines: under certain error conditions uninitialized BN objects
6560 could be freed. Solution: make sure initialization is performed early
6561 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
6565 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
6566 and DH_METHOD (eg. by ENGINE implementations) to override the normal
6567 software implementations. For DSA and DH, parameter generation can
6568 also be overridden by providing the appropriate method callbacks.
6571 *) Change the "progress" mechanism used in key-generation and
6572 primality testing to functions that take a new BN_GENCB pointer in
6573 place of callback/argument pairs. The new API functions have "_ex"
6574 postfixes and the older functions are reimplemented as wrappers for
6575 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
6576 declarations of the old functions to help (graceful) attempts to
6577 migrate to the new functions. Also, the new key-generation API
6578 functions operate on a caller-supplied key-structure and return
6579 success/failure rather than returning a key or NULL - this is to
6580 help make "keygen" another member function of RSA_METHOD etc.
6582 Example for using the new callback interface:
6584 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
6588 BN_GENCB_set(&my_cb, my_callback, my_arg);
6590 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
6591 /* For the meaning of a, b in calls to my_callback(), see the
6592 * documentation of the function that calls the callback.
6593 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
6594 * my_callback should return 1 if it wants BN_is_prime_ex()
6595 * to continue, or 0 to stop.
6600 *) Change the ZLIB compression method to be stateful, and make it
6601 available to TLS with the number defined in
6602 draft-ietf-tls-compression-04.txt.
6605 *) Add the ASN.1 structures and functions for CertificatePair, which
6606 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
6608 CertificatePair ::= SEQUENCE {
6609 forward [0] Certificate OPTIONAL,
6610 reverse [1] Certificate OPTIONAL,
6611 -- at least one of the pair shall be present -- }
6613 Also implement the PEM functions to read and write certificate
6614 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
6616 This needed to be defined, mostly for the sake of the LDAP
6617 attribute crossCertificatePair, but may prove useful elsewhere as
6621 *) Make it possible to inhibit symlinking of shared libraries in
6622 Makefile.shared, for Cygwin's sake.
6625 *) Extend the BIGNUM API by creating a function
6626 void BN_set_negative(BIGNUM *a, int neg);
6627 and a macro that behave like
6628 int BN_is_negative(const BIGNUM *a);
6630 to avoid the need to access 'a->neg' directly in applications.
6633 *) Implement fast modular reduction for pseudo-Mersenne primes
6634 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
6635 EC_GROUP_new_curve_GFp() will now automatically use this
6637 [Nils Larsch <nla@trustcenter.de>]
6639 *) Add new lock type (CRYPTO_LOCK_BN).
6642 *) Change the ENGINE framework to automatically load engines
6643 dynamically from specific directories unless they could be
6644 found to already be built in or loaded. Move all the
6645 current engines except for the cryptodev one to a new
6647 The engines in engines/ are built as shared libraries if
6648 the "shared" options was given to ./Configure or ./config.
6649 Otherwise, they are inserted in libcrypto.a.
6650 /usr/local/ssl/engines is the default directory for dynamic
6651 engines, but that can be overridden at configure time through
6652 the usual use of --prefix and/or --openssldir, and at run
6653 time with the environment variable OPENSSL_ENGINES.
6654 [Geoff Thorpe and Richard Levitte]
6656 *) Add Makefile.shared, a helper makefile to build shared
6657 libraries. Adapt Makefile.org.
6660 *) Add version info to Win32 DLLs.
6661 [Peter 'Luna' Runestig" <peter@runestig.com>]
6663 *) Add new 'medium level' PKCS#12 API. Certificates and keys
6664 can be added using this API to created arbitrary PKCS#12
6665 files while avoiding the low level API.
6667 New options to PKCS12_create(), key or cert can be NULL and
6668 will then be omitted from the output file. The encryption
6669 algorithm NIDs can be set to -1 for no encryption, the mac
6670 iteration count can be set to 0 to omit the mac.
6672 Enhance pkcs12 utility by making the -nokeys and -nocerts
6673 options work when creating a PKCS#12 file. New option -nomac
6674 to omit the mac, NONE can be set for an encryption algorithm.
6675 New code is modified to use the enhanced PKCS12_create()
6676 instead of the low level API.
6679 *) Extend ASN1 encoder to support indefinite length constructed
6680 encoding. This can output sequences tags and octet strings in
6681 this form. Modify pk7_asn1.c to support indefinite length
6682 encoding. This is experimental and needs additional code to
6683 be useful, such as an ASN1 bio and some enhanced streaming
6686 Extend template encode functionality so that tagging is passed
6687 down to the template encoder.
6690 *) Let 'openssl req' fail if an argument to '-newkey' is not
6691 recognized instead of using RSA as a default.
6694 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
6695 As these are not official, they are not included in "ALL";
6696 the "ECCdraft" ciphersuite group alias can be used to select them.
6697 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
6699 *) Add ECDH engine support.
6700 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
6702 *) Add ECDH in new directory crypto/ecdh/.
6703 [Douglas Stebila (Sun Microsystems Laboratories)]
6705 *) Let BN_rand_range() abort with an error after 100 iterations
6706 without success (which indicates a broken PRNG).
6709 *) Change BN_mod_sqrt() so that it verifies that the input value
6710 is really the square of the return value. (Previously,
6711 BN_mod_sqrt would show GIGO behaviour.)
6714 *) Add named elliptic curves over binary fields from X9.62, SECG,
6715 and WAP/WTLS; add OIDs that were still missing.
6717 [Sheueling Chang Shantz and Douglas Stebila
6718 (Sun Microsystems Laboratories)]
6720 *) Extend the EC library for elliptic curves over binary fields
6721 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
6724 EC_GF2m_simple_method
6728 EC_GROUP_new_curve_GF2m
6729 EC_GROUP_set_curve_GF2m
6730 EC_GROUP_get_curve_GF2m
6731 EC_POINT_set_affine_coordinates_GF2m
6732 EC_POINT_get_affine_coordinates_GF2m
6733 EC_POINT_set_compressed_coordinates_GF2m
6735 Point compression for binary fields is disabled by default for
6736 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
6739 As binary polynomials are represented as BIGNUMs, various members
6740 of the EC_GROUP and EC_POINT data structures can be shared
6741 between the implementations for prime fields and binary fields;
6742 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
6743 are essentially identical to their ..._GFp counterparts.
6744 (For simplicity, the '..._GFp' prefix has been dropped from
6745 various internal method names.)
6747 An internal 'field_div' method (similar to 'field_mul' and
6748 'field_sqr') has been added; this is used only for binary fields.
6750 [Sheueling Chang Shantz and Douglas Stebila
6751 (Sun Microsystems Laboratories)]
6753 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
6754 through methods ('mul', 'precompute_mult').
6756 The generic implementations (now internally called 'ec_wNAF_mul'
6757 and 'ec_wNAF_precomputed_mult') remain the default if these
6758 methods are undefined.
6760 [Sheueling Chang Shantz and Douglas Stebila
6761 (Sun Microsystems Laboratories)]
6763 *) New function EC_GROUP_get_degree, which is defined through
6764 EC_METHOD. For curves over prime fields, this returns the bit
6765 length of the modulus.
6767 [Sheueling Chang Shantz and Douglas Stebila
6768 (Sun Microsystems Laboratories)]
6770 *) New functions EC_GROUP_dup, EC_POINT_dup.
6771 (These simply call ..._new and ..._copy).
6773 [Sheueling Chang Shantz and Douglas Stebila
6774 (Sun Microsystems Laboratories)]
6776 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
6777 Polynomials are represented as BIGNUMs (where the sign bit is not
6778 used) in the following functions [macros]:
6781 BN_GF2m_sub [= BN_GF2m_add]
6782 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
6783 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
6784 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
6786 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
6787 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
6788 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
6789 BN_GF2m_cmp [= BN_ucmp]
6791 (Note that only the 'mod' functions are actually for fields GF(2^m).
6792 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
6794 For some functions, an the irreducible polynomial defining a
6795 field can be given as an 'unsigned int[]' with strictly
6796 decreasing elements giving the indices of those bits that are set;
6797 i.e., p[] represents the polynomial
6798 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
6800 p[0] > p[1] > ... > p[k] = 0.
6801 This applies to the following functions:
6806 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
6807 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
6809 BN_GF2m_mod_sqrt_arr
6810 BN_GF2m_mod_solve_quad_arr
6814 Conversion can be performed by the following functions:
6819 bntest.c has additional tests for binary polynomial arithmetic.
6821 Two implementations for BN_GF2m_mod_div() are available.
6822 The default algorithm simply uses BN_GF2m_mod_inv() and
6823 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
6824 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
6825 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
6827 [Sheueling Chang Shantz and Douglas Stebila
6828 (Sun Microsystems Laboratories)]
6830 *) Add new error code 'ERR_R_DISABLED' that can be used when some
6831 functionality is disabled at compile-time.
6832 [Douglas Stebila <douglas.stebila@sun.com>]
6834 *) Change default behaviour of 'openssl asn1parse' so that more
6835 information is visible when viewing, e.g., a certificate:
6837 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
6838 mode the content of non-printable OCTET STRINGs is output in a
6839 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
6840 avoid the appearance of a printable string.
6841 [Nils Larsch <nla@trustcenter.de>]
6843 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
6845 EC_GROUP_set_asn1_flag()
6846 EC_GROUP_get_asn1_flag()
6847 EC_GROUP_set_point_conversion_form()
6848 EC_GROUP_get_point_conversion_form()
6849 These control ASN1 encoding details:
6850 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
6851 has been set to OPENSSL_EC_NAMED_CURVE.
6852 - Points are encoded in uncompressed form by default; options for
6853 asn1_for are as for point2oct, namely
6854 POINT_CONVERSION_COMPRESSED
6855 POINT_CONVERSION_UNCOMPRESSED
6856 POINT_CONVERSION_HYBRID
6858 Also add 'seed' and 'seed_len' members to EC_GROUP with access
6861 EC_GROUP_get0_seed()
6862 EC_GROUP_get_seed_len()
6863 This is used only for ASN1 purposes (so far).
6864 [Nils Larsch <nla@trustcenter.de>]
6866 *) Add 'field_type' member to EC_METHOD, which holds the NID
6867 of the appropriate field type OID. The new function
6868 EC_METHOD_get_field_type() returns this value.
6869 [Nils Larsch <nla@trustcenter.de>]
6874 EC_POINT_point2hex()
6875 EC_POINT_hex2point()
6876 providing useful interfaces to EC_POINT_point2oct() and
6877 EC_POINT_oct2point().
6878 [Nils Larsch <nla@trustcenter.de>]
6880 *) Change internals of the EC library so that the functions
6881 EC_GROUP_set_generator()
6882 EC_GROUP_get_generator()
6883 EC_GROUP_get_order()
6884 EC_GROUP_get_cofactor()
6885 are implemented directly in crypto/ec/ec_lib.c and not dispatched
6886 to methods, which would lead to unnecessary code duplication when
6887 adding different types of curves.
6888 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
6890 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
6891 arithmetic, and such that modified wNAFs are generated
6892 (which avoid length expansion in many cases).
6895 *) Add a function EC_GROUP_check_discriminant() (defined via
6896 EC_METHOD) that verifies that the curve discriminant is non-zero.
6898 Add a function EC_GROUP_check() that makes some sanity tests
6899 on a EC_GROUP, its generator and order. This includes
6900 EC_GROUP_check_discriminant().
6901 [Nils Larsch <nla@trustcenter.de>]
6903 *) Add ECDSA in new directory crypto/ecdsa/.
6905 Add applications 'openssl ecparam' and 'openssl ecdsa'
6906 (these are based on 'openssl dsaparam' and 'openssl dsa').
6908 ECDSA support is also included in various other files across the
6909 library. Most notably,
6910 - 'openssl req' now has a '-newkey ecdsa:file' option;
6911 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
6912 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
6913 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
6914 them suitable for ECDSA where domain parameters must be
6915 extracted before the specific public key;
6916 - ECDSA engine support has been added.
6917 [Nils Larsch <nla@trustcenter.de>]
6919 *) Include some named elliptic curves, and add OIDs from X9.62,
6920 SECG, and WAP/WTLS. Each curve can be obtained from the new
6922 EC_GROUP_new_by_curve_name(),
6923 and the list of available named curves can be obtained with
6924 EC_get_builtin_curves().
6925 Also add a 'curve_name' member to EC_GROUP objects, which can be
6927 EC_GROUP_set_curve_name()
6928 EC_GROUP_get_curve_name()
6929 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
6931 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6932 was actually never needed) and in BN_mul(). The removal in BN_mul()
6933 required a small change in bn_mul_part_recursive() and the addition
6934 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6935 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6936 bn_sub_words() and bn_add_words() except they take arrays with
6940 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
6942 *) Cleanse PEM buffers before freeing them since they may contain
6944 [Benjamin Bennett <ben@psc.edu>]
6946 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
6947 a ciphersuite string such as "DEFAULT:RSA" cannot enable
6948 authentication-only ciphersuites.
6951 *) Since AES128 and AES256 share a single mask bit in the logic of
6952 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
6953 kludge to work properly if AES128 is available and AES256 isn't.
6956 *) Expand security boundary to match 1.1.1 module.
6959 *) Remove redundant features: hash file source, editing of test vectors
6960 modify fipsld to use external fips_premain.c signature.
6963 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
6964 run algorithm test programs.
6967 *) Make algorithm test programs more tolerant of whitespace.
6970 *) Have SSL/TLS server implementation tolerate "mismatched" record
6971 protocol version while receiving ClientHello even if the
6972 ClientHello is fragmented. (The server can't insist on the
6973 particular protocol version it has chosen before the ServerHello
6974 message has informed the client about his choice.)
6977 *) Load error codes if they are not already present instead of using a
6978 static variable. This allows them to be cleanly unloaded and reloaded.
6981 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
6983 *) Introduce limits to prevent malicious keys being able to
6984 cause a denial of service. (CVE-2006-2940)
6985 [Steve Henson, Bodo Moeller]
6987 *) Fix ASN.1 parsing of certain invalid structures that can result
6988 in a denial of service. (CVE-2006-2937) [Steve Henson]
6990 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
6991 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
6993 *) Fix SSL client code which could crash if connecting to a
6994 malicious SSLv2 server. (CVE-2006-4343)
6995 [Tavis Ormandy and Will Drewry, Google Security Team]
6997 *) Change ciphersuite string processing so that an explicit
6998 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
6999 will no longer include "AES128-SHA"), and any other similar
7000 ciphersuite (same bitmap) from *other* protocol versions (so that
7001 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
7002 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
7003 changes from 0.9.8b and 0.9.8d.
7006 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
7008 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
7009 (CVE-2006-4339) [Ben Laurie and Google Security Team]
7011 *) Change the Unix randomness entropy gathering to use poll() when
7012 possible instead of select(), since the latter has some
7013 undesirable limitations.
7014 [Darryl Miles via Richard Levitte and Bodo Moeller]
7016 *) Disable rogue ciphersuites:
7018 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
7019 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
7020 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
7022 The latter two were purportedly from
7023 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
7026 Also deactivate the remaining ciphersuites from
7027 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
7028 unofficial, and the ID has long expired.
7031 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
7032 dual-core machines) and other potential thread-safety issues.
7035 Changes between 0.9.7i and 0.9.7j [04 May 2006]
7037 *) Adapt fipsld and the build system to link against the validated FIPS
7038 module in FIPS mode.
7041 *) Fixes for VC++ 2005 build under Windows.
7044 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
7045 from a Windows bash shell such as MSYS. It is autodetected from the
7046 "config" script when run from a VC++ environment. Modify standard VC++
7047 build to use fipscanister.o from the GNU make build.
7050 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
7052 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
7053 The value now differs depending on if you build for FIPS or not.
7054 BEWARE! A program linked with a shared FIPSed libcrypto can't be
7055 safely run with a non-FIPSed libcrypto, as it may crash because of
7056 the difference induced by this change.
7059 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
7061 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
7062 (part of SSL_OP_ALL). This option used to disable the
7063 countermeasure against man-in-the-middle protocol-version
7064 rollback in the SSL 2.0 server implementation, which is a bad
7065 idea. (CVE-2005-2969)
7067 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
7068 for Information Security, National Institute of Advanced Industrial
7069 Science and Technology [AIST], Japan)]
7071 *) Minimal support for X9.31 signatures and PSS padding modes. This is
7072 mainly for FIPS compliance and not fully integrated at this stage.
7075 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
7076 the exponentiation using a fixed-length exponent. (Otherwise,
7077 the information leaked through timing could expose the secret key
7078 after many signatures; cf. Bleichenbacher's attack on DSA with
7082 *) Make a new fixed-window mod_exp implementation the default for
7083 RSA, DSA, and DH private-key operations so that the sequence of
7084 squares and multiplies and the memory access pattern are
7085 independent of the particular secret key. This will mitigate
7086 cache-timing and potential related attacks.
7088 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
7089 and this is automatically used by BN_mod_exp_mont() if the new flag
7090 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
7091 will use this BN flag for private exponents unless the flag
7092 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
7093 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
7095 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
7097 *) Change the client implementation for SSLv23_method() and
7098 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
7099 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
7100 (Previously, the SSL 2.0 backwards compatible Client Hello
7101 message format would be used even with SSL_OP_NO_SSLv2.)
7104 *) Add support for smime-type MIME parameter in S/MIME messages which some
7108 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
7109 a threadsafe manner. Modify rsa code to use new function and add calls
7110 to dsa and dh code (which had race conditions before).
7113 *) Include the fixed error library code in the C error file definitions
7114 instead of fixing them up at runtime. This keeps the error code
7115 structures constant.
7118 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
7120 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
7123 *) Fixes for newer kerberos headers. NB: the casts are needed because
7124 the 'length' field is signed on one version and unsigned on another
7125 with no (?) obvious way to tell the difference, without these VC++
7126 complains. Also the "definition" of FAR (blank) is no longer included
7127 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
7128 some needed definitions.
7131 *) Undo Cygwin change.
7134 *) Added support for proxy certificates according to RFC 3820.
7135 Because they may be a security thread to unaware applications,
7136 they must be explicitly allowed in run-time. See
7137 docs/HOWTO/proxy_certificates.txt for further information.
7140 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
7142 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
7143 server and client random values. Previously
7144 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
7145 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
7147 This change has negligible security impact because:
7149 1. Server and client random values still have 24 bytes of pseudo random
7152 2. Server and client random values are sent in the clear in the initial
7155 3. The master secret is derived using the premaster secret (48 bytes in
7156 size for static RSA ciphersuites) as well as client server and random
7159 The OpenSSL team would like to thank the UK NISCC for bringing this issue
7162 [Stephen Henson, reported by UK NISCC]
7164 *) Use Windows randomness collection on Cygwin.
7167 *) Fix hang in EGD/PRNGD query when communication socket is closed
7168 prematurely by EGD/PRNGD.
7169 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
7171 *) Prompt for pass phrases when appropriate for PKCS12 input format.
7174 *) Back-port of selected performance improvements from development
7175 branch, as well as improved support for PowerPC platforms.
7178 *) Add lots of checks for memory allocation failure, error codes to indicate
7179 failure and freeing up memory if a failure occurs.
7180 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
7182 *) Add new -passin argument to dgst.
7185 *) Perform some character comparisons of different types in X509_NAME_cmp:
7186 this is needed for some certificates that re-encode DNs into UTF8Strings
7187 (in violation of RFC3280) and can't or won't issue name rollover
7191 *) Make an explicit check during certificate validation to see that
7192 the CA setting in each certificate on the chain is correct. As a
7193 side effect always do the following basic checks on extensions,
7194 not just when there's an associated purpose to the check:
7196 - if there is an unhandled critical extension (unless the user
7197 has chosen to ignore this fault)
7198 - if the path length has been exceeded (if one is set at all)
7199 - that certain extensions fit the associated purpose (if one has
7203 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
7205 *) Avoid a race condition when CRLs are checked in a multi threaded
7206 environment. This would happen due to the reordering of the revoked
7207 entries during signature checking and serial number lookup. Now the
7208 encoding is cached and the serial number sort performed under a lock.
7209 Add new STACK function sk_is_sorted().
7212 *) Add Delta CRL to the extension code.
7215 *) Various fixes to s3_pkt.c so alerts are sent properly.
7216 [David Holmes <d.holmes@f5.com>]
7218 *) Reduce the chances of duplicate issuer name and serial numbers (in
7219 violation of RFC3280) using the OpenSSL certificate creation utilities.
7220 This is done by creating a random 64 bit value for the initial serial
7221 number when a serial number file is created or when a self signed
7222 certificate is created using 'openssl req -x509'. The initial serial
7223 number file is created using 'openssl x509 -next_serial' in CA.pl
7224 rather than being initialized to 1.
7227 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
7229 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7230 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7231 [Joe Orton, Steve Henson]
7233 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
7235 [Joe Orton, Steve Henson]
7237 *) Make it possible to have multiple active certificates with the same
7238 subject in the CA index file. This is done only if the keyword
7239 'unique_subject' is set to 'no' in the main CA section (default
7240 if 'CA_default') of the configuration file. The value is saved
7241 with the database itself in a separate index attribute file,
7242 named like the index file with '.attr' appended to the name.
7245 *) X509 verify fixes. Disable broken certificate workarounds when
7246 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
7247 keyUsage extension present. Don't accept CRLs with unhandled critical
7248 extensions: since verify currently doesn't process CRL extensions this
7249 rejects a CRL with *any* critical extensions. Add new verify error codes
7253 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
7254 A clarification of RFC2560 will require the use of OCTET STRINGs and
7255 some implementations cannot handle the current raw format. Since OpenSSL
7256 copies and compares OCSP nonces as opaque blobs without any attempt at
7257 parsing them this should not create any compatibility issues.
7260 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
7261 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
7262 this HMAC (and other) operations are several times slower than OpenSSL
7266 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
7267 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7269 *) Use the correct content when signing type "other".
7272 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
7274 *) Fix various bugs revealed by running the NISCC test suite:
7276 Stop out of bounds reads in the ASN1 code when presented with
7277 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7279 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
7281 If verify callback ignores invalid public key errors don't try to check
7282 certificate signature with the NULL public key.
7286 *) New -ignore_err option in ocsp application to stop the server
7287 exiting on the first error in a request.
7290 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7291 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7295 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7296 extra data after the compression methods not only for TLS 1.0
7297 but also for SSL 3.0 (as required by the specification).
7298 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7300 *) Change X509_certificate_type() to mark the key as exported/exportable
7301 when it's 512 *bits* long, not 512 bytes.
7304 *) Change AES_cbc_encrypt() so it outputs exact multiple of
7305 blocks during encryption.
7308 *) Various fixes to base64 BIO and non blocking I/O. On write
7309 flushes were not handled properly if the BIO retried. On read
7310 data was not being buffered properly and had various logic bugs.
7311 This also affects blocking I/O when the data being decoded is a
7315 *) Various S/MIME bugfixes and compatibility changes:
7316 output correct application/pkcs7 MIME type if
7317 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
7318 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
7319 of files as .eml work). Correctly handle very long lines in MIME
7323 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
7325 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7326 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7327 a protocol version number mismatch like a decryption error
7328 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7331 *) Turn on RSA blinding by default in the default implementation
7332 to avoid a timing attack. Applications that don't want it can call
7333 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7334 They would be ill-advised to do so in most cases.
7335 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7337 *) Change RSA blinding code so that it works when the PRNG is not
7338 seeded (in this case, the secret RSA exponent is abused as
7339 an unpredictable seed -- if it is not unpredictable, there
7340 is no point in blinding anyway). Make RSA blinding thread-safe
7341 by remembering the creator's thread ID in rsa->blinding and
7342 having all other threads use local one-time blinding factors
7343 (this requires more computation than sharing rsa->blinding, but
7344 avoids excessive locking; and if an RSA object is not shared
7345 between threads, blinding will still be very fast).
7348 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
7349 ENGINE as defaults for all supported algorithms irrespective of
7350 the 'flags' parameter. 'flags' is now honoured, so applications
7351 should make sure they are passing it correctly.
7354 *) Target "mingw" now allows native Windows code to be generated in
7355 the Cygwin environment as well as with the MinGW compiler.
7358 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
7360 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7361 via timing by performing a MAC computation even if incorrect
7362 block cipher padding has been found. This is a countermeasure
7363 against active attacks where the attacker has to distinguish
7364 between bad padding and a MAC verification error. (CVE-2003-0078)
7366 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7367 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7368 Martin Vuagnoux (EPFL, Ilion)]
7370 *) Make the no-err option work as intended. The intention with no-err
7371 is not to have the whole error stack handling routines removed from
7372 libcrypto, it's only intended to remove all the function name and
7373 reason texts, thereby removing some of the footprint that may not
7374 be interesting if those errors aren't displayed anyway.
7376 NOTE: it's still possible for any application or module to have its
7377 own set of error texts inserted. The routines are there, just not
7378 used by default when no-err is given.
7381 *) Add support for FreeBSD on IA64.
7382 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
7384 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
7385 Kerberos function mit_des_cbc_cksum(). Before this change,
7386 the value returned by DES_cbc_cksum() was like the one from
7387 mit_des_cbc_cksum(), except the bytes were swapped.
7388 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
7390 *) Allow an application to disable the automatic SSL chain building.
7391 Before this a rather primitive chain build was always performed in
7392 ssl3_output_cert_chain(): an application had no way to send the
7393 correct chain if the automatic operation produced an incorrect result.
7395 Now the chain builder is disabled if either:
7397 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
7399 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
7401 The reasoning behind this is that an application would not want the
7402 auto chain building to take place if extra chain certificates are
7403 present and it might also want a means of sending no additional
7404 certificates (for example the chain has two certificates and the
7408 *) Add the possibility to build without the ENGINE framework.
7409 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7411 *) Under Win32 gmtime() can return NULL: check return value in
7412 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
7415 *) DSA routines: under certain error conditions uninitialized BN objects
7416 could be freed. Solution: make sure initialization is performed early
7417 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
7418 Nils Larsch <nla@trustcenter.de> via PR#459)
7421 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
7422 checked on reconnect on the client side, therefore session resumption
7423 could still fail with a "ssl session id is different" error. This
7424 behaviour is masked when SSL_OP_ALL is used due to
7425 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
7426 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7427 followup to PR #377.
7430 *) IA-32 assembler support enhancements: unified ELF targets, support
7431 for SCO/Caldera platforms, fix for Cygwin shared build.
7434 *) Add support for FreeBSD on sparc64. As a consequence, support for
7435 FreeBSD on non-x86 processors is separate from x86 processors on
7436 the config script, much like the NetBSD support.
7437 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
7439 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
7441 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
7444 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
7445 code (06) was taken as the first octet of the session ID and the last
7446 octet was ignored consequently. As a result SSLv2 client side session
7447 caching could not have worked due to the session ID mismatch between
7449 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7453 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
7454 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
7458 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
7459 seems that in spite of existing for more than a year, many application
7460 author have done nothing to provide the necessary callbacks, which
7461 means that this particular engine will not work properly anywhere.
7462 This is a very unfortunate situation which forces us, in the name
7463 of usability, to give the hw_ncipher.c a static lock, which is part
7465 NOTE: This is for the 0.9.7 series ONLY. This hack will never
7466 appear in 0.9.8 or later. We EXPECT application authors to have
7467 dealt properly with this when 0.9.8 is released (unless we actually
7468 make such changes in the libcrypto locking code that changes will
7469 have to be made anyway).
7472 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
7473 octets have been read, EOF or an error occurs. Without this change
7474 some truncated ASN1 structures will not produce an error.
7477 *) Disable Heimdal support, since it hasn't been fully implemented.
7478 Still give the possibility to force the use of Heimdal, but with
7479 warnings and a request that patches get sent to openssl-dev.
7482 *) Add the VC-CE target, introduce the WINCE sysname, and add
7483 INSTALL.WCE and appropriate conditionals to make it build.
7484 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7486 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
7487 cygssl-x.y.z.dll, where x, y and z are the major, minor and
7488 edit numbers of the version.
7489 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7491 *) Introduce safe string copy and catenation functions
7492 (BUF_strlcpy() and BUF_strlcat()).
7493 [Ben Laurie (CHATS) and Richard Levitte]
7495 *) Avoid using fixed-size buffers for one-line DNs.
7496 [Ben Laurie (CHATS)]
7498 *) Add BUF_MEM_grow_clean() to avoid information leakage when
7499 resizing buffers containing secrets, and use where appropriate.
7500 [Ben Laurie (CHATS)]
7502 *) Avoid using fixed size buffers for configuration file location.
7503 [Ben Laurie (CHATS)]
7505 *) Avoid filename truncation for various CA files.
7506 [Ben Laurie (CHATS)]
7508 *) Use sizeof in preference to magic numbers.
7509 [Ben Laurie (CHATS)]
7511 *) Avoid filename truncation in cert requests.
7512 [Ben Laurie (CHATS)]
7514 *) Add assertions to check for (supposedly impossible) buffer
7516 [Ben Laurie (CHATS)]
7518 *) Don't cache truncated DNS entries in the local cache (this could
7519 potentially lead to a spoofing attack).
7520 [Ben Laurie (CHATS)]
7522 *) Fix various buffers to be large enough for hex/decimal
7523 representations in a platform independent manner.
7524 [Ben Laurie (CHATS)]
7526 *) Add CRYPTO_realloc_clean() to avoid information leakage when
7527 resizing buffers containing secrets, and use where appropriate.
7528 [Ben Laurie (CHATS)]
7530 *) Add BIO_indent() to avoid much slightly worrying code to do
7532 [Ben Laurie (CHATS)]
7534 *) Convert sprintf()/BIO_puts() to BIO_printf().
7535 [Ben Laurie (CHATS)]
7537 *) buffer_gets() could terminate with the buffer only half
7539 [Ben Laurie (CHATS)]
7541 *) Add assertions to prevent user-supplied crypto functions from
7542 overflowing internal buffers by having large block sizes, etc.
7543 [Ben Laurie (CHATS)]
7545 *) New OPENSSL_assert() macro (similar to assert(), but enabled
7547 [Ben Laurie (CHATS)]
7549 *) Eliminate unused copy of key in RC4.
7550 [Ben Laurie (CHATS)]
7552 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
7553 [Ben Laurie (CHATS)]
7555 *) Fix off-by-one error in EGD path.
7556 [Ben Laurie (CHATS)]
7558 *) If RANDFILE path is too long, ignore instead of truncating.
7559 [Ben Laurie (CHATS)]
7561 *) Eliminate unused and incorrectly sized X.509 structure
7563 [Ben Laurie (CHATS)]
7565 *) Eliminate unused and dangerous function knumber().
7566 [Ben Laurie (CHATS)]
7568 *) Eliminate unused and dangerous structure, KSSL_ERR.
7569 [Ben Laurie (CHATS)]
7571 *) Protect against overlong session ID context length in an encoded
7572 session object. Since these are local, this does not appear to be
7574 [Ben Laurie (CHATS)]
7576 *) Change from security patch (see 0.9.6e below) that did not affect
7577 the 0.9.6 release series:
7579 Remote buffer overflow in SSL3 protocol - an attacker could
7580 supply an oversized master key in Kerberos-enabled versions.
7582 [Ben Laurie (CHATS)]
7584 *) Change the SSL kerb5 codes to match RFC 2712.
7587 *) Make -nameopt work fully for req and add -reqopt switch.
7588 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
7590 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
7591 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
7593 *) Make sure tests can be performed even if the corresponding algorithms
7594 have been removed entirely. This was also the last step to make
7595 OpenSSL compilable with DJGPP under all reasonable conditions.
7596 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
7598 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
7599 to allow version independent disabling of normally unselected ciphers,
7600 which may be activated as a side-effect of selecting a single cipher.
7602 (E.g., cipher list string "RSA" enables ciphersuites that are left
7603 out of "ALL" because they do not provide symmetric encryption.
7604 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
7605 [Lutz Jaenicke, Bodo Moeller]
7607 *) Add appropriate support for separate platform-dependent build
7608 directories. The recommended way to make a platform-dependent
7609 build directory is the following (tested on Linux), maybe with
7612 # Place yourself outside of the OpenSSL source tree. In
7613 # this example, the environment variable OPENSSL_SOURCE
7614 # is assumed to contain the absolute OpenSSL source directory.
7615 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
7616 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
7617 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
7618 mkdir -p `dirname $F`
7619 ln -s $OPENSSL_SOURCE/$F $F
7622 To be absolutely sure not to disturb the source tree, a "make clean"
7623 is a good thing. If it isn't successful, don't worry about it,
7624 it probably means the source directory is very clean.
7627 *) Make sure any ENGINE control commands make local copies of string
7628 pointers passed to them whenever necessary. Otherwise it is possible
7629 the caller may have overwritten (or deallocated) the original string
7630 data when a later ENGINE operation tries to use the stored values.
7631 [Götz Babin-Ebell <babinebell@trustcenter.de>]
7633 *) Improve diagnostics in file reading and command-line digests.
7634 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
7636 *) Add AES modes CFB and OFB to the object database. Correct an
7637 error in AES-CFB decryption.
7640 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
7641 allows existing EVP_CIPHER_CTX structures to be reused after
7642 calling EVP_*Final(). This behaviour is used by encryption
7643 BIOs and some applications. This has the side effect that
7644 applications must explicitly clean up cipher contexts with
7645 EVP_CIPHER_CTX_cleanup() or they will leak memory.
7648 *) Check the values of dna and dnb in bn_mul_recursive before calling
7649 bn_mul_comba (a non zero value means the a or b arrays do not contain
7650 n2 elements) and fallback to bn_mul_normal if either is not zero.
7653 *) Fix escaping of non-ASCII characters when using the -subj option
7654 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
7657 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
7658 form for "surname", serialNumber has no short form.
7659 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
7660 therefore remove "mail" short name for "internet 7".
7661 The OID for unique identifiers in X509 certificates is
7662 x500UniqueIdentifier, not uniqueIdentifier.
7663 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
7666 *) Add an "init" command to the ENGINE config module and auto initialize
7667 ENGINEs. Without any "init" command the ENGINE will be initialized
7668 after all ctrl commands have been executed on it. If init=1 the
7669 ENGINE is initialized at that point (ctrls before that point are run
7670 on the uninitialized ENGINE and after on the initialized one). If
7671 init=0 then the ENGINE will not be initialized at all.
7674 *) Fix the 'app_verify_callback' interface so that the user-defined
7675 argument is actually passed to the callback: In the
7676 SSL_CTX_set_cert_verify_callback() prototype, the callback
7677 declaration has been changed from
7680 int (*cb)(X509_STORE_CTX *,void *);
7681 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
7682 i=s->ctx->app_verify_callback(&ctx)
7683 has been changed into
7684 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
7686 To update applications using SSL_CTX_set_cert_verify_callback(),
7687 a dummy argument can be added to their callback functions.
7688 [D. K. Smetters <smetters@parc.xerox.com>]
7690 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
7691 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
7693 *) Add and OPENSSL_LOAD_CONF define which will cause
7694 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
7695 This allows older applications to transparently support certain
7696 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
7697 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
7698 load the config file and OPENSSL_add_all_algorithms_conf() which will
7699 always load it have also been added.
7702 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
7703 Adjust NIDs and EVP layer.
7704 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7706 *) Config modules support in openssl utility.
7708 Most commands now load modules from the config file,
7709 though in a few (such as version) this isn't done
7710 because it couldn't be used for anything.
7712 In the case of ca and req the config file used is
7713 the same as the utility itself: that is the -config
7714 command line option can be used to specify an
7718 *) Move default behaviour from OPENSSL_config(). If appname is NULL
7719 use "openssl_conf" if filename is NULL use default openssl config file.
7722 *) Add an argument to OPENSSL_config() to allow the use of an alternative
7723 config section name. Add a new flag to tolerate a missing config file
7724 and move code to CONF_modules_load_file().
7727 *) Support for crypto accelerator cards from Accelerated Encryption
7728 Processing, www.aep.ie. (Use engine 'aep')
7729 The support was copied from 0.9.6c [engine] and adapted/corrected
7730 to work with the new engine framework.
7731 [AEP Inc. and Richard Levitte]
7733 *) Support for SureWare crypto accelerator cards from Baltimore
7734 Technologies. (Use engine 'sureware')
7735 The support was copied from 0.9.6c [engine] and adapted
7736 to work with the new engine framework.
7739 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
7740 make the newer ENGINE framework commands for the CHIL engine work.
7741 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
7743 *) Make it possible to produce shared libraries on ReliantUNIX.
7744 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
7746 *) Add the configuration target debug-linux-ppro.
7747 Make 'openssl rsa' use the general key loading routines
7748 implemented in apps.c, and make those routines able to
7749 handle the key format FORMAT_NETSCAPE and the variant
7751 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7753 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7754 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7756 *) Add -keyform to rsautl, and document -engine.
7757 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
7759 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
7760 BIO_R_NO_SUCH_FILE error code rather than the generic
7761 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
7764 *) Add new functions
7766 ERR_peek_last_error_line
7767 ERR_peek_last_error_line_data.
7768 These are similar to
7771 ERR_peek_error_line_data,
7772 but report on the latest error recorded rather than the first one
7773 still in the error queue.
7774 [Ben Laurie, Bodo Moeller]
7776 *) default_algorithms option in ENGINE config module. This allows things
7778 default_algorithms = ALL
7779 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
7782 *) Preliminary ENGINE config module.
7785 *) New experimental application configuration code.
7788 *) Change the AES code to follow the same name structure as all other
7789 symmetric ciphers, and behave the same way. Move everything to
7790 the directory crypto/aes, thereby obsoleting crypto/rijndael.
7791 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7793 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
7794 [Ben Laurie and Theo de Raadt]
7796 *) Add option to output public keys in req command.
7797 [Massimiliano Pala madwolf@openca.org]
7799 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
7800 (up to about 10% better than before for P-192 and P-224).
7803 *) New functions/macros
7805 SSL_CTX_set_msg_callback(ctx, cb)
7806 SSL_CTX_set_msg_callback_arg(ctx, arg)
7807 SSL_set_msg_callback(ssl, cb)
7808 SSL_set_msg_callback_arg(ssl, arg)
7810 to request calling a callback function
7812 void cb(int write_p, int version, int content_type,
7813 const void *buf, size_t len, SSL *ssl, void *arg)
7815 whenever a protocol message has been completely received
7816 (write_p == 0) or sent (write_p == 1). Here 'version' is the
7817 protocol version according to which the SSL library interprets
7818 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
7819 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
7820 the content type as defined in the SSL 3.0/TLS 1.0 protocol
7821 specification (change_cipher_spec(20), alert(21), handshake(22)).
7822 'buf' and 'len' point to the actual message, 'ssl' to the
7823 SSL object, and 'arg' is the application-defined value set by
7824 SSL[_CTX]_set_msg_callback_arg().
7826 'openssl s_client' and 'openssl s_server' have new '-msg' options
7827 to enable a callback that displays all protocol messages.
7830 *) Change the shared library support so shared libraries are built as
7831 soon as the corresponding static library is finished, and thereby get
7832 openssl and the test programs linked against the shared library.
7833 This still only happens when the keyword "shard" has been given to
7834 the configuration scripts.
7836 NOTE: shared library support is still an experimental thing, and
7837 backward binary compatibility is still not guaranteed.
7838 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
7840 *) Add support for Subject Information Access extension.
7841 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7843 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
7844 additional bytes when new memory had to be allocated, not just
7845 when reusing an existing buffer.
7848 *) New command line and configuration option 'utf8' for the req command.
7849 This allows field values to be specified as UTF8 strings.
7852 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
7853 runs for the former and machine-readable output for the latter.
7856 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
7857 of the e-mail address in the DN (i.e., it will go into a certificate
7858 extension only). The new configuration file option 'email_in_dn = no'
7859 has the same effect.
7860 [Massimiliano Pala madwolf@openca.org]
7862 *) Change all functions with names starting with des_ to be starting
7863 with DES_ instead. Add wrappers that are compatible with libdes,
7864 but are named _ossl_old_des_*. Finally, add macros that map the
7865 des_* symbols to the corresponding _ossl_old_des_* if libdes
7866 compatibility is desired. If OpenSSL 0.9.6c compatibility is
7867 desired, the des_* symbols will be mapped to DES_*, with one
7870 Since we provide two compatibility mappings, the user needs to
7871 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
7872 compatibility is desired. The default (i.e., when that macro
7873 isn't defined) is OpenSSL 0.9.6c compatibility.
7875 There are also macros that enable and disable the support of old
7876 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
7877 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
7878 are defined, the default will apply: to support the old des routines.
7880 In either case, one must include openssl/des.h to get the correct
7881 definitions. Do not try to just include openssl/des_old.h, that
7884 NOTE: This is a major break of an old API into a new one. Software
7885 authors are encouraged to switch to the DES_ style functions. Some
7886 time in the future, des_old.h and the libdes compatibility functions
7887 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
7888 default), and then completely removed.
7891 *) Test for certificates which contain unsupported critical extensions.
7892 If such a certificate is found during a verify operation it is
7893 rejected by default: this behaviour can be overridden by either
7894 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
7895 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
7896 X509_supported_extension() has also been added which returns 1 if a
7897 particular extension is supported.
7900 *) Modify the behaviour of EVP cipher functions in similar way to digests
7901 to retain compatibility with existing code.
7904 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
7905 compatibility with existing code. In particular the 'ctx' parameter does
7906 not have to be to be initialized before the call to EVP_DigestInit() and
7907 it is tidied up after a call to EVP_DigestFinal(). New function
7908 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
7909 EVP_MD_CTX_copy() changed to not require the destination to be
7910 initialized valid and new function EVP_MD_CTX_copy_ex() added which
7911 requires the destination to be valid.
7913 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
7914 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
7917 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
7918 so that complete 'Handshake' protocol structures are kept in memory
7919 instead of overwriting 'msg_type' and 'length' with 'body' data.
7922 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
7923 [Massimo Santin via Richard Levitte]
7925 *) Major restructuring to the underlying ENGINE code. This includes
7926 reduction of linker bloat, separation of pure "ENGINE" manipulation
7927 (initialisation, etc) from functionality dealing with implementations
7928 of specific crypto interfaces. This change also introduces integrated
7929 support for symmetric ciphers and digest implementations - so ENGINEs
7930 can now accelerate these by providing EVP_CIPHER and EVP_MD
7931 implementations of their own. This is detailed in crypto/engine/README
7932 as it couldn't be adequately described here. However, there are a few
7933 API changes worth noting - some RSA, DSA, DH, and RAND functions that
7934 were changed in the original introduction of ENGINE code have now
7935 reverted back - the hooking from this code to ENGINE is now a good
7936 deal more passive and at run-time, operations deal directly with
7937 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
7938 dereferencing through an ENGINE pointer any more. Also, the ENGINE
7939 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
7940 they were not being used by the framework as there is no concept of a
7941 BIGNUM_METHOD and they could not be generalised to the new
7942 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
7943 ENGINE_cpy() has been removed as it cannot be consistently defined in
7947 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
7950 *) Change mkdef.pl to sort symbols that get the same entry number,
7951 and make sure the automatically generated functions ERR_load_*
7952 become part of libeay.num as well.
7955 *) New function SSL_renegotiate_pending(). This returns true once
7956 renegotiation has been requested (either SSL_renegotiate() call
7957 or HelloRequest/ClientHello received from the peer) and becomes
7958 false once a handshake has been completed.
7959 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
7960 sends a HelloRequest, but does not ensure that a handshake takes
7961 place. SSL_renegotiate_pending() is useful for checking if the
7962 client has followed the request.)
7965 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
7966 By default, clients may request session resumption even during
7967 renegotiation (if session ID contexts permit); with this option,
7968 session resumption is possible only in the first handshake.
7970 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
7971 more bits available for options that should not be part of
7972 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
7975 *) Add some demos for certificate and certificate request creation.
7978 *) Make maximum certificate chain size accepted from the peer application
7979 settable (SSL*_get/set_max_cert_list()), as proposed by
7980 "Douglas E. Engert" <deengert@anl.gov>.
7983 *) Add support for shared libraries for Unixware-7
7984 (Boyd Lynn Gerber <gerberb@zenez.com>).
7987 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
7988 be done prior to destruction. Use this to unload error strings from
7989 ENGINEs that load their own error strings. NB: This adds two new API
7990 functions to "get" and "set" this destroy handler in an ENGINE.
7993 *) Alter all existing ENGINE implementations (except "openssl" and
7994 "openbsd") to dynamically instantiate their own error strings. This
7995 makes them more flexible to be built both as statically-linked ENGINEs
7996 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
7997 Also, add stub code to each that makes building them as self-contained
7998 shared-libraries easier (see README.ENGINE).
8001 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
8002 implementations into applications that are completely implemented in
8003 self-contained shared-libraries. The "dynamic" ENGINE exposes control
8004 commands that can be used to configure what shared-library to load and
8005 to control aspects of the way it is handled. Also, made an update to
8006 the README.ENGINE file that brings its information up-to-date and
8007 provides some information and instructions on the "dynamic" ENGINE
8008 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
8011 *) Make it possible to unload ranges of ERR strings with a new
8012 "ERR_unload_strings" function.
8015 *) Add a copy() function to EVP_MD.
8018 *) Make EVP_MD routines take a context pointer instead of just the
8019 md_data void pointer.
8022 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
8023 that the digest can only process a single chunk of data
8024 (typically because it is provided by a piece of
8025 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
8026 is only going to provide a single chunk of data, and hence the
8027 framework needn't accumulate the data for oneshot drivers.
8030 *) As with "ERR", make it possible to replace the underlying "ex_data"
8031 functions. This change also alters the storage and management of global
8032 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
8033 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
8034 index counters. The API functions that use this state have been changed
8035 to take a "class_index" rather than pointers to the class's local STACK
8036 and counter, and there is now an API function to dynamically create new
8037 classes. This centralisation allows us to (a) plug a lot of the
8038 thread-safety problems that existed, and (b) makes it possible to clean
8039 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
8040 such data would previously have always leaked in application code and
8041 workarounds were in place to make the memory debugging turn a blind eye
8042 to it. Application code that doesn't use this new function will still
8043 leak as before, but their memory debugging output will announce it now
8044 rather than letting it slide.
8046 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
8047 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
8048 has a return value to indicate success or failure.
8051 *) Make it possible to replace the underlying "ERR" functions such that the
8052 global state (2 LHASH tables and 2 locks) is only used by the "default"
8053 implementation. This change also adds two functions to "get" and "set"
8054 the implementation prior to it being automatically set the first time
8055 any other ERR function takes place. Ie. an application can call "get",
8056 pass the return value to a module it has just loaded, and that module
8057 can call its own "set" function using that value. This means the
8058 module's "ERR" operations will use (and modify) the error state in the
8059 application and not in its own statically linked copy of OpenSSL code.
8062 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
8063 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
8064 the operation, and provides a more encapsulated way for external code
8065 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
8066 to use these functions rather than manually incrementing the counts.
8068 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
8071 *) Add EVP test program.
8074 *) Add symmetric cipher support to ENGINE. Expect the API to change!
8077 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
8078 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
8079 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
8080 These allow a CRL to be built without having to access X509_CRL fields
8081 directly. Modify 'ca' application to use new functions.
8084 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
8085 bug workarounds. Rollback attack detection is a security feature.
8086 The problem will only arise on OpenSSL servers when TLSv1 is not
8087 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
8088 Software authors not wanting to support TLSv1 will have special reasons
8089 for their choice and can explicitly enable this option.
8090 [Bodo Moeller, Lutz Jaenicke]
8092 *) Rationalise EVP so it can be extended: don't include a union of
8093 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
8094 (similar to those existing for EVP_CIPHER_CTX).
8099 EVP_MD_CTX_init(&md); /* new function call */
8100 EVP_DigestInit(&md, EVP_sha1());
8101 EVP_DigestUpdate(&md, in, len);
8102 EVP_DigestFinal(&md, out, NULL);
8103 EVP_MD_CTX_cleanup(&md); /* new function call */
8107 *) Make DES key schedule conform to the usual scheme, as well as
8108 correcting its structure. This means that calls to DES functions
8109 now have to pass a pointer to a des_key_schedule instead of a
8110 plain des_key_schedule (which was actually always a pointer
8113 des_key_schedule ks;
8115 des_set_key_checked(..., &ks);
8116 des_ncbc_encrypt(..., &ks, ...);
8118 (Note that a later change renames 'des_...' into 'DES_...'.)
8121 *) Initial reduction of linker bloat: the use of some functions, such as
8122 PEM causes large amounts of unused functions to be linked in due to
8123 poor organisation. For example pem_all.c contains every PEM function
8124 which has a knock on effect of linking in large amounts of (unused)
8125 ASN1 code. Grouping together similar functions and splitting unrelated
8126 functions prevents this.
8129 *) Cleanup of EVP macros.
8132 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
8133 correct _ecb suffix.
8136 *) Add initial OCSP responder support to ocsp application. The
8137 revocation information is handled using the text based index
8138 use by the ca application. The responder can either handle
8139 requests generated internally, supplied in files (for example
8140 via a CGI script) or using an internal minimal server.
8143 *) Add configuration choices to get zlib compression for TLS.
8146 *) Changes to Kerberos SSL for RFC 2712 compliance:
8147 1. Implemented real KerberosWrapper, instead of just using
8148 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
8149 2. Implemented optional authenticator field of KerberosWrapper.
8151 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
8152 and authenticator structs; see crypto/krb5/.
8154 Generalized Kerberos calls to support multiple Kerberos libraries.
8155 [Vern Staats <staatsvr@asc.hpc.mil>,
8156 Jeffrey Altman <jaltman@columbia.edu>
8157 via Richard Levitte]
8159 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
8160 already does with RSA. testdsa.h now has 'priv_key/pub_key'
8161 values for each of the key sizes rather than having just
8162 parameters (and 'speed' generating keys each time).
8165 *) Speed up EVP routines.
8168 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
8169 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
8170 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
8171 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
8173 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
8174 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
8175 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
8178 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
8180 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
8183 *) Added the OS2-EMX target.
8184 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
8186 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
8187 to support NCONF routines in extension code. New function CONF_set_nconf()
8188 to allow functions which take an NCONF to also handle the old LHASH
8189 structure: this means that the old CONF compatible routines can be
8190 retained (in particular wrt extensions) without having to duplicate the
8191 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
8194 *) Enhance the general user interface with mechanisms for inner control
8195 and with possibilities to have yes/no kind of prompts.
8198 *) Change all calls to low level digest routines in the library and
8199 applications to use EVP. Add missing calls to HMAC_cleanup() and
8200 don't assume HMAC_CTX can be copied using memcpy().
8201 [Verdon Walker <VWalker@novell.com>, Steve Henson]
8203 *) Add the possibility to control engines through control names but with
8204 arbitrary arguments instead of just a string.
8205 Change the key loaders to take a UI_METHOD instead of a callback
8206 function pointer. NOTE: this breaks binary compatibility with earlier
8207 versions of OpenSSL [engine].
8208 Adapt the nCipher code for these new conditions and add a card insertion
8212 *) Enhance the general user interface with mechanisms to better support
8213 dialog box interfaces, application-defined prompts, the possibility
8214 to use defaults (for example default passwords from somewhere else)
8215 and interrupts/cancellations.
8218 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
8219 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
8222 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
8223 tidy up some unnecessarily weird code in 'sk_new()').
8224 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
8226 *) Change the key loading routines for ENGINEs to use the same kind
8227 callback (pem_password_cb) as all other routines that need this
8231 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
8232 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
8233 than this minimum value is recommended.
8236 *) New random seeder for OpenVMS, using the system process statistics
8237 that are easily reachable.
8240 *) Windows apparently can't transparently handle global
8241 variables defined in DLLs. Initialisations such as:
8243 const ASN1_ITEM *it = &ASN1_INTEGER_it;
8245 won't compile. This is used by the any applications that need to
8246 declare their own ASN1 modules. This was fixed by adding the option
8247 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
8248 needed for static libraries under Win32.
8251 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
8252 setting of purpose and trust fields. New X509_STORE trust and
8253 purpose functions and tidy up setting in other SSL functions.
8256 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
8257 structure. These are inherited by X509_STORE_CTX when it is
8258 initialised. This allows various defaults to be set in the
8259 X509_STORE structure (such as flags for CRL checking and custom
8260 purpose or trust settings) for functions which only use X509_STORE_CTX
8261 internally such as S/MIME.
8263 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
8264 trust settings if they are not set in X509_STORE. This allows X509_STORE
8265 purposes and trust (in S/MIME for example) to override any set by default.
8267 Add command line options for CRL checking to smime, s_client and s_server
8271 *) Initial CRL based revocation checking. If the CRL checking flag(s)
8272 are set then the CRL is looked up in the X509_STORE structure and
8273 its validity and signature checked, then if the certificate is found
8274 in the CRL the verify fails with a revoked error.
8276 Various new CRL related callbacks added to X509_STORE_CTX structure.
8278 Command line options added to 'verify' application to support this.
8280 This needs some additional work, such as being able to handle multiple
8281 CRLs with different times, extension based lookup (rather than just
8282 by subject name) and ultimately more complete V2 CRL extension
8286 *) Add a general user interface API (crypto/ui/). This is designed
8287 to replace things like des_read_password and friends (backward
8288 compatibility functions using this new API are provided).
8289 The purpose is to remove prompting functions from the DES code
8290 section as well as provide for prompting through dialog boxes in
8291 a window system and the like.
8294 *) Add "ex_data" support to ENGINE so implementations can add state at a
8295 per-structure level rather than having to store it globally.
8298 *) Make it possible for ENGINE structures to be copied when retrieved by
8299 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
8300 This causes the "original" ENGINE structure to act like a template,
8301 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
8302 operational state can be localised to each ENGINE structure, despite the
8303 fact they all share the same "methods". New ENGINE structures returned in
8304 this case have no functional references and the return value is the single
8305 structural reference. This matches the single structural reference returned
8306 by ENGINE_by_id() normally, when it is incremented on the pre-existing
8310 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
8311 needs to match any other type at all we need to manually clear the
8315 *) Changes to the "openssl engine" utility to include;
8316 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
8317 about an ENGINE's available control commands.
8318 - executing control commands from command line arguments using the
8319 '-pre' and '-post' switches. '-post' is only used if '-t' is
8320 specified and the ENGINE is successfully initialised. The syntax for
8321 the individual commands are colon-separated, for example;
8322 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
8325 *) New dynamic control command support for ENGINEs. ENGINEs can now
8326 declare their own commands (numbers), names (strings), descriptions,
8327 and input types for run-time discovery by calling applications. A
8328 subset of these commands are implicitly classed as "executable"
8329 depending on their input type, and only these can be invoked through
8330 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
8331 can be based on user input, config files, etc). The distinction is
8332 that "executable" commands cannot return anything other than a boolean
8333 result and can only support numeric or string input, whereas some
8334 discoverable commands may only be for direct use through
8335 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
8336 pointers, or other custom uses. The "executable" commands are to
8337 support parameterisations of ENGINE behaviour that can be
8338 unambiguously defined by ENGINEs and used consistently across any
8339 OpenSSL-based application. Commands have been added to all the
8340 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
8341 control over shared-library paths without source code alterations.
8344 *) Changed all ENGINE implementations to dynamically allocate their
8345 ENGINEs rather than declaring them statically. Apart from this being
8346 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
8347 this also allows the implementations to compile without using the
8348 internal engine_int.h header.
8351 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
8352 'const' value. Any code that should be able to modify a RAND_METHOD
8353 should already have non-const pointers to it (ie. they should only
8354 modify their own ones).
8357 *) Made a variety of little tweaks to the ENGINE code.
8358 - "atalla" and "ubsec" string definitions were moved from header files
8359 to C code. "nuron" string definitions were placed in variables
8360 rather than hard-coded - allowing parameterisation of these values
8361 later on via ctrl() commands.
8362 - Removed unused "#if 0"'d code.
8363 - Fixed engine list iteration code so it uses ENGINE_free() to release
8364 structural references.
8365 - Constified the RAND_METHOD element of ENGINE structures.
8366 - Constified various get/set functions as appropriate and added
8367 missing functions (including a catch-all ENGINE_cpy that duplicates
8368 all ENGINE values onto a new ENGINE except reference counts/state).
8369 - Removed NULL parameter checks in get/set functions. Setting a method
8370 or function to NULL is a way of cancelling out a previously set
8371 value. Passing a NULL ENGINE parameter is just plain stupid anyway
8372 and doesn't justify the extra error symbols and code.
8373 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
8374 flags from engine_int.h to engine.h.
8375 - Changed prototypes for ENGINE handler functions (init(), finish(),
8376 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
8379 *) Implement binary inversion algorithm for BN_mod_inverse in addition
8380 to the algorithm using long division. The binary algorithm can be
8381 used only if the modulus is odd. On 32-bit systems, it is faster
8382 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
8383 roughly 5-15% for 256-bit moduli), so we use it only for moduli
8384 up to 450 bits. In 64-bit environments, the binary algorithm
8385 appears to be advantageous for much longer moduli; here we use it
8386 for moduli up to 2048 bits.
8389 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
8390 could not support the combine flag in choice fields.
8393 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
8394 extensions from a certificate request to the certificate.
8397 *) Allow multiple 'certopt' and 'nameopt' options to be separated
8398 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
8399 file: this allows the display of the certificate about to be
8400 signed to be customised, to allow certain fields to be included
8401 or excluded and extension details. The old system didn't display
8402 multicharacter strings properly, omitted fields not in the policy
8403 and couldn't display additional details such as extensions.
8406 *) Function EC_POINTs_mul for multiple scalar multiplication
8407 of an arbitrary number of elliptic curve points
8408 \sum scalars[i]*points[i],
8409 optionally including the generator defined for the EC_GROUP:
8410 scalar*generator + \sum scalars[i]*points[i].
8412 EC_POINT_mul is a simple wrapper function for the typical case
8413 that the point list has just one item (besides the optional
8417 *) First EC_METHODs for curves over GF(p):
8419 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
8420 operations and provides various method functions that can also
8421 operate with faster implementations of modular arithmetic.
8423 EC_GFp_mont_method() reuses most functions that are part of
8424 EC_GFp_simple_method, but uses Montgomery arithmetic.
8426 [Bodo Moeller; point addition and point doubling
8427 implementation directly derived from source code provided by
8428 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
8430 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
8431 crypto/ec/ec_lib.c):
8433 Curves are EC_GROUP objects (with an optional group generator)
8434 based on EC_METHODs that are built into the library.
8436 Points are EC_POINT objects based on EC_GROUP objects.
8438 Most of the framework would be able to handle curves over arbitrary
8439 finite fields, but as there are no obvious types for fields other
8440 than GF(p), some functions are limited to that for now.
8443 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
8444 that the file contains a complete HTTP response.
8447 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
8448 change the def and num file printf format specifier from "%-40sXXX"
8449 to "%-39s XXX". The latter will always guarantee a space after the
8450 field while the former will cause them to run together if the field
8451 is 40 of more characters long.
8454 *) Constify the cipher and digest 'method' functions and structures
8455 and modify related functions to take constant EVP_MD and EVP_CIPHER
8459 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
8460 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
8463 *) Modify EVP_Digest*() routines so they now return values. Although the
8464 internal software routines can never fail additional hardware versions
8468 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
8470 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
8471 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
8474 ERR_R_NESTED_ASN1_ERROR
8476 ERR_R_MISSING_ASN1_EOS
8477 were 4 .. 9, conflicting with
8478 ERR_LIB_RSA (= ERR_R_RSA_LIB)
8480 ERR_LIB_PEM (= ERR_R_PEM_LIB).
8481 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
8483 Add new error code 'ERR_R_INTERNAL_ERROR'.
8486 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
8490 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
8491 sets the subject name for a new request or supersedes the
8492 subject name in a given request. Formats that can be parsed are
8493 'CN=Some Name, OU=myOU, C=IT'
8495 'CN=Some Name/OU=myOU/C=IT'.
8497 Add options '-batch' and '-verbose' to 'openssl req'.
8498 [Massimiliano Pala <madwolf@hackmasters.net>]
8500 *) Introduce the possibility to access global variables through
8501 functions on platform were that's the best way to handle exporting
8502 global variables in shared libraries. To enable this functionality,
8503 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
8504 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
8505 is normally done by Configure or something similar).
8507 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
8508 in the source file (foo.c) like this:
8510 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
8511 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
8513 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
8514 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
8516 OPENSSL_DECLARE_GLOBAL(int,foo);
8517 #define foo OPENSSL_GLOBAL_REF(foo)
8518 OPENSSL_DECLARE_GLOBAL(double,bar);
8519 #define bar OPENSSL_GLOBAL_REF(bar)
8521 The #defines are very important, and therefore so is including the
8522 header file everywhere where the defined globals are used.
8524 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
8525 of ASN.1 items, but that structure is a bit different.
8527 The largest change is in util/mkdef.pl which has been enhanced with
8528 better and easier to understand logic to choose which symbols should
8529 go into the Windows .def files as well as a number of fixes and code
8530 cleanup (among others, algorithm keywords are now sorted
8531 lexicographically to avoid constant rewrites).
8534 *) In BN_div() keep a copy of the sign of 'num' before writing the
8535 result to 'rm' because if rm==num the value will be overwritten
8536 and produce the wrong result if 'num' is negative: this caused
8537 problems with BN_mod() and BN_nnmod().
8540 *) Function OCSP_request_verify(). This checks the signature on an
8541 OCSP request and verifies the signer certificate. The signer
8542 certificate is just checked for a generic purpose and OCSP request
8546 *) Add OCSP_check_validity() function to check the validity of OCSP
8547 responses. OCSP responses are prepared in real time and may only
8548 be a few seconds old. Simply checking that the current time lies
8549 between thisUpdate and nextUpdate max reject otherwise valid responses
8550 caused by either OCSP responder or client clock inaccuracy. Instead
8551 we allow thisUpdate and nextUpdate to fall within a certain period of
8552 the current time. The age of the response can also optionally be
8553 checked. Two new options -validity_period and -status_age added to
8557 *) If signature or public key algorithm is unrecognized print out its
8558 OID rather that just UNKNOWN.
8561 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
8562 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
8563 ID to be generated from the issuer certificate alone which can then be
8564 passed to OCSP_id_issuer_cmp().
8567 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
8568 ASN1 modules to export functions returning ASN1_ITEM pointers
8569 instead of the ASN1_ITEM structures themselves. This adds several
8570 new macros which allow the underlying ASN1 function/structure to
8571 be accessed transparently. As a result code should not use ASN1_ITEM
8572 references directly (such as &X509_it) but instead use the relevant
8573 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
8574 use of the new ASN1 code on platforms where exporting structures
8575 is problematical (for example in shared libraries) but exporting
8576 functions returning pointers to structures is not.
8579 *) Add support for overriding the generation of SSL/TLS session IDs.
8580 These callbacks can be registered either in an SSL_CTX or per SSL.
8581 The purpose of this is to allow applications to control, if they wish,
8582 the arbitrary values chosen for use as session IDs, particularly as it
8583 can be useful for session caching in multiple-server environments. A
8584 command-line switch for testing this (and any client code that wishes
8585 to use such a feature) has been added to "s_server".
8586 [Geoff Thorpe, Lutz Jaenicke]
8588 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
8589 of the form '#if defined(...) || defined(...) || ...' and
8590 '#if !defined(...) && !defined(...) && ...'. This also avoids
8591 the growing number of special cases it was previously handling.
8594 *) Make all configuration macros available for application by making
8595 sure they are available in opensslconf.h, by giving them names starting
8596 with "OPENSSL_" to avoid conflicts with other packages and by making
8597 sure e_os2.h will cover all platform-specific cases together with
8599 Additionally, it is now possible to define configuration/platform-
8600 specific names (called "system identities"). In the C code, these
8601 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
8602 macro with the name beginning with "OPENSSL_SYS_", which is determined
8603 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
8607 *) New option -set_serial to 'req' and 'x509' this allows the serial
8608 number to use to be specified on the command line. Previously self
8609 signed certificates were hard coded with serial number 0 and the
8610 CA options of 'x509' had to use a serial number in a file which was
8614 *) New options to 'ca' utility to support V2 CRL entry extensions.
8615 Currently CRL reason, invalidity date and hold instruction are
8616 supported. Add new CRL extensions to V3 code and some new objects.
8619 *) New function EVP_CIPHER_CTX_set_padding() this is used to
8620 disable standard block padding (aka PKCS#5 padding) in the EVP
8621 API, which was previously mandatory. This means that the data is
8622 not padded in any way and so the total length much be a multiple
8623 of the block size, otherwise an error occurs.
8626 *) Initial (incomplete) OCSP SSL support.
8629 *) New function OCSP_parse_url(). This splits up a URL into its host,
8630 port and path components: primarily to parse OCSP URLs. New -url
8631 option to ocsp utility.
8634 *) New nonce behavior. The return value of OCSP_check_nonce() now
8635 reflects the various checks performed. Applications can decide
8636 whether to tolerate certain situations such as an absent nonce
8637 in a response when one was present in a request: the ocsp application
8638 just prints out a warning. New function OCSP_add1_basic_nonce()
8639 this is to allow responders to include a nonce in a response even if
8640 the request is nonce-less.
8643 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
8644 skipped when using openssl x509 multiple times on a single input file,
8645 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
8648 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
8649 set string type: to handle setting ASN1_TIME structures. Fix ca
8650 utility to correctly initialize revocation date of CRLs.
8653 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
8654 the clients preferred ciphersuites and rather use its own preferences.
8655 Should help to work around M$ SGC (Server Gated Cryptography) bug in
8656 Internet Explorer by ensuring unchanged hash method during stepup.
8657 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
8660 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
8661 to aes and add a new 'exist' option to print out symbols that don't
8665 *) Additional options to ocsp utility to allow flags to be set and
8666 additional certificates supplied.
8669 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
8670 OCSP client a number of certificate to only verify the response
8674 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
8675 handle the new API. Currently only ECB, CBC modes supported. Add new
8678 Add TLS AES ciphersuites as described in RFC3268, "Advanced
8679 Encryption Standard (AES) Ciphersuites for Transport Layer
8680 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
8681 not enabled by default and were not part of the "ALL" ciphersuite
8682 alias because they were not yet official; they could be
8683 explicitly requested by specifying the "AESdraft" ciphersuite
8684 group alias. In the final release of OpenSSL 0.9.7, the group
8685 alias is called "AES" and is part of "ALL".)
8686 [Ben Laurie, Steve Henson, Bodo Moeller]
8688 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
8689 request to response.
8692 *) Functions for OCSP responders. OCSP_request_onereq_count(),
8693 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
8694 extract information from a certificate request. OCSP_response_create()
8695 creates a response and optionally adds a basic response structure.
8696 OCSP_basic_add1_status() adds a complete single response to a basic
8697 response and returns the OCSP_SINGLERESP structure just added (to allow
8698 extensions to be included for example). OCSP_basic_add1_cert() adds a
8699 certificate to a basic response and OCSP_basic_sign() signs a basic
8700 response with various flags. New helper functions ASN1_TIME_check()
8701 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
8702 (converts ASN1_TIME to GeneralizedTime).
8705 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
8706 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
8707 structure from a certificate. X509_pubkey_digest() digests the public_key
8708 contents: this is used in various key identifiers.
8711 *) Make sk_sort() tolerate a NULL argument.
8712 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
8714 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
8715 passed by the function are trusted implicitly. If any of them signed the
8716 response then it is assumed to be valid and is not verified.
8719 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
8720 to data. This was previously part of the PKCS7 ASN1 code. This
8721 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
8722 [Steve Henson, reported by Kenneth R. Robinette
8723 <support@securenetterm.com>]
8725 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
8726 routines: without these tracing memory leaks is very painful.
8727 Fix leaks in PKCS12 and PKCS7 routines.
8730 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
8731 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
8732 effectively meant GeneralizedTime would never be used. Now it
8733 is initialised to -1 but X509_time_adj() now has to check the value
8734 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
8735 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
8736 [Steve Henson, reported by Kenneth R. Robinette
8737 <support@securenetterm.com>]
8739 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
8740 result in a zero length in the ASN1_INTEGER structure which was
8741 not consistent with the structure when d2i_ASN1_INTEGER() was used
8742 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
8743 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
8744 where it did not print out a minus for negative ASN1_INTEGER.
8747 *) Add summary printout to ocsp utility. The various functions which
8748 convert status values to strings have been renamed to:
8749 OCSP_response_status_str(), OCSP_cert_status_str() and
8750 OCSP_crl_reason_str() and are no longer static. New options
8751 to verify nonce values and to disable verification. OCSP response
8752 printout format cleaned up.
8755 *) Add additional OCSP certificate checks. These are those specified
8756 in RFC2560. This consists of two separate checks: the CA of the
8757 certificate being checked must either be the OCSP signer certificate
8758 or the issuer of the OCSP signer certificate. In the latter case the
8759 OCSP signer certificate must contain the OCSP signing extended key
8760 usage. This check is performed by attempting to match the OCSP
8761 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
8762 in the OCSP_CERTID structures of the response.
8765 *) Initial OCSP certificate verification added to OCSP_basic_verify()
8766 and related routines. This uses the standard OpenSSL certificate
8767 verify routines to perform initial checks (just CA validity) and
8768 to obtain the certificate chain. Then additional checks will be
8769 performed on the chain. Currently the root CA is checked to see
8770 if it is explicitly trusted for OCSP signing. This is used to set
8771 a root CA as a global signing root: that is any certificate that
8772 chains to that CA is an acceptable OCSP signing certificate.
8775 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
8776 extensions from a separate configuration file.
8777 As when reading extensions from the main configuration file,
8778 the '-extensions ...' option may be used for specifying the
8780 [Massimiliano Pala <madwolf@comune.modena.it>]
8782 *) New OCSP utility. Allows OCSP requests to be generated or
8783 read. The request can be sent to a responder and the output
8784 parsed, outputed or printed in text form. Not complete yet:
8785 still needs to check the OCSP response validity.
8788 *) New subcommands for 'openssl ca':
8789 'openssl ca -status <serial>' prints the status of the cert with
8790 the given serial number (according to the index file).
8791 'openssl ca -updatedb' updates the expiry status of certificates
8793 [Massimiliano Pala <madwolf@comune.modena.it>]
8795 *) New '-newreq-nodes' command option to CA.pl. This is like
8796 '-newreq', but calls 'openssl req' with the '-nodes' option
8797 so that the resulting key is not encrypted.
8798 [Damien Miller <djm@mindrot.org>]
8800 *) New configuration for the GNU Hurd.
8801 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
8803 *) Initial code to implement OCSP basic response verify. This
8804 is currently incomplete. Currently just finds the signer's
8805 certificate and verifies the signature on the response.
8808 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
8809 value of OPENSSLDIR. This is available via the new '-d' option
8810 to 'openssl version', and is also included in 'openssl version -a'.
8813 *) Allowing defining memory allocation callbacks that will be given
8814 file name and line number information in additional arguments
8815 (a const char* and an int). The basic functionality remains, as
8816 well as the original possibility to just replace malloc(),
8817 realloc() and free() by functions that do not know about these
8818 additional arguments. To register and find out the current
8819 settings for extended allocation functions, the following
8820 functions are provided:
8822 CRYPTO_set_mem_ex_functions
8823 CRYPTO_set_locked_mem_ex_functions
8824 CRYPTO_get_mem_ex_functions
8825 CRYPTO_get_locked_mem_ex_functions
8827 These work the same way as CRYPTO_set_mem_functions and friends.
8828 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
8829 extended allocation function is enabled.
8830 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
8831 a conventional allocation function is enabled.
8832 [Richard Levitte, Bodo Moeller]
8834 *) Finish off removing the remaining LHASH function pointer casts.
8835 There should no longer be any prototype-casting required when using
8836 the LHASH abstraction, and any casts that remain are "bugs". See
8837 the callback types and macros at the head of lhash.h for details
8838 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
8841 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
8842 If /dev/[u]random devices are not available or do not return enough
8843 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
8845 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
8846 /etc/entropy will be queried once each in this sequence, querying stops
8847 when enough entropy was collected without querying more sockets.
8850 *) Change the Unix RAND_poll() variant to be able to poll several
8851 random devices, as specified by DEVRANDOM, until a sufficient amount
8852 of data has been collected. We spend at most 10 ms on each file
8853 (select timeout) and read in non-blocking mode. DEVRANDOM now
8854 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
8855 (previously it was just the string "/dev/urandom"), so on typical
8856 platforms the 10 ms delay will never occur.
8857 Also separate out the Unix variant to its own file, rand_unix.c.
8858 For VMS, there's a currently-empty rand_vms.c.
8861 *) Move OCSP client related routines to ocsp_cl.c. These
8862 provide utility functions which an application needing
8863 to issue a request to an OCSP responder and analyse the
8864 response will typically need: as opposed to those which an
8865 OCSP responder itself would need which will be added later.
8867 OCSP_request_sign() signs an OCSP request with an API similar
8868 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
8869 response. OCSP_response_get1_basic() extracts basic response
8870 from response. OCSP_resp_find_status(): finds and extracts status
8871 information from an OCSP_CERTID structure (which will be created
8872 when the request structure is built). These are built from lower
8873 level functions which work on OCSP_SINGLERESP structures but
8874 won't normally be used unless the application wishes to examine
8875 extensions in the OCSP response for example.
8877 Replace nonce routines with a pair of functions.
8878 OCSP_request_add1_nonce() adds a nonce value and optionally
8879 generates a random value. OCSP_check_nonce() checks the
8880 validity of the nonce in an OCSP response.
8883 *) Change function OCSP_request_add() to OCSP_request_add0_id().
8884 This doesn't copy the supplied OCSP_CERTID and avoids the
8885 need to free up the newly created id. Change return type
8886 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
8887 This can then be used to add extensions to the request.
8888 Deleted OCSP_request_new(), since most of its functionality
8889 is now in OCSP_REQUEST_new() (and the case insensitive name
8890 clash) apart from the ability to set the request name which
8891 will be added elsewhere.
8894 *) Update OCSP API. Remove obsolete extensions argument from
8895 various functions. Extensions are now handled using the new
8896 OCSP extension code. New simple OCSP HTTP function which
8897 can be used to send requests and parse the response.
8900 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
8901 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
8902 uses the special reorder version of SET OF to sort the attributes
8903 and reorder them to match the encoded order. This resolves a long
8904 standing problem: a verify on a PKCS7 structure just after signing
8905 it used to fail because the attribute order did not match the
8906 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
8907 it uses the received order. This is necessary to tolerate some broken
8908 software that does not order SET OF. This is handled by encoding
8909 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
8910 to produce the required SET OF.
8913 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
8914 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
8915 files to get correct declarations of the ASN.1 item variables.
8918 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
8919 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
8920 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
8921 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
8922 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
8923 ASN1_ITEM and no wrapper functions.
8926 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
8927 replace the old function pointer based I/O routines. Change most of
8928 the *_d2i_bio() and *_d2i_fp() functions to use these.
8931 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
8932 lines, recognize more "algorithms" that can be deselected, and make
8933 it complain about algorithm deselection that isn't recognised.
8936 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
8937 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
8938 to use new functions. Add NO_ASN1_OLD which can be set to remove
8939 some old style ASN1 functions: this can be used to determine if old
8940 code will still work when these eventually go away.
8943 *) New extension functions for OCSP structures, these follow the
8944 same conventions as certificates and CRLs.
8947 *) New function X509V3_add1_i2d(). This automatically encodes and
8948 adds an extension. Its behaviour can be customised with various
8949 flags to append, replace or delete. Various wrappers added for
8950 certificates and CRLs.
8953 *) Fix to avoid calling the underlying ASN1 print routine when
8954 an extension cannot be parsed. Correct a typo in the
8955 OCSP_SERVICELOC extension. Tidy up print OCSP format.
8958 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
8959 entries for variables.
8962 *) Add functionality to apps/openssl.c for detecting locking
8963 problems: As the program is single-threaded, all we have
8964 to do is register a locking callback using an array for
8965 storing which locks are currently held by the program.
8968 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
8969 SSL_get_ex_data_X509_STORE_idx(), which is used in
8970 ssl_verify_cert_chain() and thus can be called at any time
8971 during TLS/SSL handshakes so that thread-safety is essential.
8972 Unfortunately, the ex_data design is not at all suited
8973 for multi-threaded use, so it probably should be abolished.
8976 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
8977 [Broadcom, tweaked and integrated by Geoff Thorpe]
8979 *) Move common extension printing code to new function
8980 X509V3_print_extensions(). Reorganise OCSP print routines and
8981 implement some needed OCSP ASN1 functions. Add OCSP extensions.
8984 *) New function X509_signature_print() to remove duplication in some
8988 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
8989 set (this was treated exactly the same as SET OF previously). This
8990 is used to reorder the STACK representing the structure to match the
8991 encoding. This will be used to get round a problem where a PKCS7
8992 structure which was signed could not be verified because the STACK
8993 order did not reflect the encoded order.
8996 *) Reimplement the OCSP ASN1 module using the new code.
8999 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
9000 for its ASN1 operations. The old style function pointers still exist
9001 for now but they will eventually go away.
9004 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
9005 completely replaces the old ASN1 functionality with a table driven
9006 encoder and decoder which interprets an ASN1_ITEM structure describing
9007 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
9008 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
9009 has also been converted to the new form.
9012 *) Change BN_mod_exp_recp so that negative moduli are tolerated
9013 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
9014 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
9015 for negative moduli.
9018 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
9019 of not touching the result's sign bit.
9022 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
9026 *) Changed the LHASH code to use prototypes for callbacks, and created
9027 macros to declare and implement thin (optionally static) functions
9028 that provide type-safety and avoid function pointer casting for the
9029 type-specific callbacks.
9032 *) Added Kerberos Cipher Suites to be used with TLS, as written in
9034 [Veers Staats <staatsvr@asc.hpc.mil>,
9035 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
9037 *) Reformat the FAQ so the different questions and answers can be divided
9038 in sections depending on the subject.
9041 *) Have the zlib compression code load ZLIB.DLL dynamically under
9045 *) New function BN_mod_sqrt for computing square roots modulo a prime
9046 (using the probabilistic Tonelli-Shanks algorithm unless
9047 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
9048 be handled deterministically).
9049 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
9051 *) Make BN_mod_inverse faster by explicitly handling small quotients
9052 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
9053 512 bits], about 30% for larger ones [1024 or 2048 bits].)
9056 *) New function BN_kronecker.
9059 *) Fix BN_gcd so that it works on negative inputs; the result is
9060 positive unless both parameters are zero.
9061 Previously something reasonably close to an infinite loop was
9062 possible because numbers could be growing instead of shrinking
9063 in the implementation of Euclid's algorithm.
9066 *) Fix BN_is_word() and BN_is_one() macros to take into account the
9067 sign of the number in question.
9069 Fix BN_is_word(a,w) to work correctly for w == 0.
9071 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
9072 because its test if the absolute value of 'a' equals 'w'.
9073 Note that BN_abs_is_word does *not* handle w == 0 reliably;
9074 it exists mostly for use in the implementations of BN_is_zero(),
9075 BN_is_one(), and BN_is_word().
9078 *) New function BN_swap.
9081 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
9082 the exponentiation functions are more likely to produce reasonable
9083 results on negative inputs.
9086 *) Change BN_mod_mul so that the result is always non-negative.
9087 Previously, it could be negative if one of the factors was negative;
9088 I don't think anyone really wanted that behaviour.
9091 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
9092 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
9093 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
9094 and add new functions:
9103 BN_mod_lshift1_quick
9107 These functions always generate non-negative results.
9109 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
9110 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
9112 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
9113 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
9114 be reduced modulo m.
9115 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
9118 The following entry accidentally appeared in the CHANGES file
9119 distributed with OpenSSL 0.9.7. The modifications described in
9120 it do *not* apply to OpenSSL 0.9.7.
9122 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
9123 was actually never needed) and in BN_mul(). The removal in BN_mul()
9124 required a small change in bn_mul_part_recursive() and the addition
9125 of the functions bn_cmp_part_words(), bn_sub_part_words() and
9126 bn_add_part_words(), which do the same thing as bn_cmp_words(),
9127 bn_sub_words() and bn_add_words() except they take arrays with
9132 *) In 'openssl passwd', verify passwords read from the terminal
9133 unless the '-salt' option is used (which usually means that
9134 verification would just waste user's time since the resulting
9135 hash is going to be compared with some given password hash)
9136 or the new '-noverify' option is used.
9138 This is an incompatible change, but it does not affect
9139 non-interactive use of 'openssl passwd' (passwords on the command
9140 line, '-stdin' option, '-in ...' option) and thus should not
9144 *) Remove all references to RSAref, since there's no more need for it.
9147 *) Make DSO load along a path given through an environment variable
9148 (SHLIB_PATH) with shl_load().
9151 *) Constify the ENGINE code as a result of BIGNUM constification.
9152 Also constify the RSA code and most things related to it. In a
9153 few places, most notable in the depth of the ASN.1 code, ugly
9154 casts back to non-const were required (to be solved at a later
9158 *) Make it so the openssl application has all engines loaded by default.
9161 *) Constify the BIGNUM routines a little more.
9164 *) Add the following functions:
9166 ENGINE_load_cswift()
9168 ENGINE_load_atalla()
9170 ENGINE_load_builtin_engines()
9172 That way, an application can itself choose if external engines that
9173 are built-in in OpenSSL shall ever be used or not. The benefit is
9174 that applications won't have to be linked with libdl or other dso
9175 libraries unless it's really needed.
9177 Changed 'openssl engine' to load all engines on demand.
9178 Changed the engine header files to avoid the duplication of some
9179 declarations (they differed!).
9182 *) 'openssl engine' can now list capabilities.
9185 *) Better error reporting in 'openssl engine'.
9188 *) Never call load_dh_param(NULL) in s_server.
9191 *) Add engine application. It can currently list engines by name and
9192 identity, and test if they are actually available.
9195 *) Improve RPM specification file by forcing symbolic linking and making
9196 sure the installed documentation is also owned by root.root.
9197 [Damien Miller <djm@mindrot.org>]
9199 *) Give the OpenSSL applications more possibilities to make use of
9200 keys (public as well as private) handled by engines.
9203 *) Add OCSP code that comes from CertCo.
9206 *) Add VMS support for the Rijndael code.
9209 *) Added untested support for Nuron crypto accelerator.
9212 *) Add support for external cryptographic devices. This code was
9213 previously distributed separately as the "engine" branch.
9214 [Geoff Thorpe, Richard Levitte]
9216 *) Rework the filename-translation in the DSO code. It is now possible to
9217 have far greater control over how a "name" is turned into a filename
9218 depending on the operating environment and any oddities about the
9219 different shared library filenames on each system.
9222 *) Support threads on FreeBSD-elf in Configure.
9225 *) Fix for SHA1 assembly problem with MASM: it produces
9226 warnings about corrupt line number information when assembling
9227 with debugging information. This is caused by the overlapping
9229 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
9232 NCONF_get_number() has no error checking at all. As a replacement,
9233 NCONF_get_number_e() is defined (_e for "error checking") and is
9234 promoted strongly. The old NCONF_get_number is kept around for
9235 binary backward compatibility.
9236 Make it possible for methods to load from something other than a BIO,
9237 by providing a function pointer that is given a name instead of a BIO.
9238 For example, this could be used to load configuration data from an
9242 *) Fix for non blocking accept BIOs. Added new I/O special reason
9243 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
9244 with non blocking I/O was not possible because no retry code was
9245 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
9249 *) Added the beginnings of Rijndael support.
9252 *) Fix for bug in DirectoryString mask setting. Add support for
9253 X509_NAME_print_ex() in 'req' and X509_print_ex() function
9254 to allow certificate printing to more controllable, additional
9255 'certopt' option to 'x509' to allow new printing options to be
9259 *) Clean old EAY MD5 hack from e_os.h.
9262 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
9264 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
9265 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
9266 [Joe Orton, Steve Henson]
9268 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
9270 *) Fix additional bug revealed by the NISCC test suite:
9272 Stop bug triggering large recursion when presented with
9273 certain ASN.1 tags (CVE-2003-0851)
9276 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
9278 *) Fix various bugs revealed by running the NISCC test suite:
9280 Stop out of bounds reads in the ASN1 code when presented with
9281 invalid tags (CVE-2003-0543 and CVE-2003-0544).
9283 If verify callback ignores invalid public key errors don't try to check
9284 certificate signature with the NULL public key.
9288 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
9289 if the server requested one: as stated in TLS 1.0 and SSL 3.0
9293 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
9294 extra data after the compression methods not only for TLS 1.0
9295 but also for SSL 3.0 (as required by the specification).
9296 [Bodo Moeller; problem pointed out by Matthias Loepfe]
9298 *) Change X509_certificate_type() to mark the key as exported/exportable
9299 when it's 512 *bits* long, not 512 bytes.
9302 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
9304 *) Countermeasure against the Klima-Pokorny-Rosa extension of
9305 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
9306 a protocol version number mismatch like a decryption error
9307 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
9310 *) Turn on RSA blinding by default in the default implementation
9311 to avoid a timing attack. Applications that don't want it can call
9312 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
9313 They would be ill-advised to do so in most cases.
9314 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
9316 *) Change RSA blinding code so that it works when the PRNG is not
9317 seeded (in this case, the secret RSA exponent is abused as
9318 an unpredictable seed -- if it is not unpredictable, there
9319 is no point in blinding anyway). Make RSA blinding thread-safe
9320 by remembering the creator's thread ID in rsa->blinding and
9321 having all other threads use local one-time blinding factors
9322 (this requires more computation than sharing rsa->blinding, but
9323 avoids excessive locking; and if an RSA object is not shared
9324 between threads, blinding will still be very fast).
9327 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
9329 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
9330 via timing by performing a MAC computation even if incorrect
9331 block cipher padding has been found. This is a countermeasure
9332 against active attacks where the attacker has to distinguish
9333 between bad padding and a MAC verification error. (CVE-2003-0078)
9335 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
9336 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
9337 Martin Vuagnoux (EPFL, Ilion)]
9339 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
9341 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
9342 memory from its contents. This is done with a counter that will
9343 place alternating values in each byte. This can be used to solve
9344 two issues: 1) the removal of calls to memset() by highly optimizing
9345 compilers, and 2) cleansing with other values than 0, since those can
9346 be read through on certain media, for example a swap space on disk.
9349 *) Bugfix: client side session caching did not work with external caching,
9350 because the session->cipher setting was not restored when reloading
9351 from the external cache. This problem was masked, when
9352 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
9353 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
9356 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
9357 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
9358 [Zeev Lieber <zeev-l@yahoo.com>]
9360 *) Undo an undocumented change introduced in 0.9.6e which caused
9361 repeated calls to OpenSSL_add_all_ciphers() and
9362 OpenSSL_add_all_digests() to be ignored, even after calling
9366 *) Change the default configuration reader to deal with last line not
9367 being properly terminated.
9370 *) Change X509_NAME_cmp() so it applies the special rules on handling
9371 DN values that are of type PrintableString, as well as RDNs of type
9372 emailAddress where the value has the type ia5String.
9373 [stefank@valicert.com via Richard Levitte]
9375 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
9376 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
9377 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
9378 the bitwise-OR of the two for use by the majority of applications
9379 wanting this behaviour, and update the docs. The documented
9380 behaviour and actual behaviour were inconsistent and had been
9381 changing anyway, so this is more a bug-fix than a behavioural
9383 [Geoff Thorpe, diagnosed by Nadav Har'El]
9385 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
9386 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
9389 *) Fix initialization code race conditions in
9390 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
9391 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
9392 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
9393 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
9394 ssl2_get_cipher_by_char(),
9395 ssl3_get_cipher_by_char().
9396 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
9398 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
9399 the cached sessions are flushed, as the remove_cb() might use ex_data
9400 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
9401 (see [openssl.org #212]).
9402 [Geoff Thorpe, Lutz Jaenicke]
9404 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
9405 length, instead of the encoding length to d2i_ASN1_OBJECT.
9408 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
9410 *) [In 0.9.6g-engine release:]
9411 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
9412 [Lynn Gazis <lgazis@rainbow.com>]
9414 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
9416 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
9417 and get fix the header length calculation.
9418 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
9419 Alon Kantor <alonk@checkpoint.com> (and others),
9422 *) Use proper error handling instead of 'assertions' in buffer
9423 overflow checks added in 0.9.6e. This prevents DoS (the
9424 assertions could call abort()).
9425 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
9427 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
9429 *) Add various sanity checks to asn1_get_length() to reject
9430 the ASN1 length bytes if they exceed sizeof(long), will appear
9431 negative or the content length exceeds the length of the
9433 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9435 *) Fix cipher selection routines: ciphers without encryption had no flags
9436 for the cipher strength set and where therefore not handled correctly
9437 by the selection routines (PR #130).
9440 *) Fix EVP_dsa_sha macro.
9444 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
9445 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
9446 that was added in OpenSSL 0.9.6d.
9448 As the countermeasure turned out to be incompatible with some
9449 broken SSL implementations, the new option is part of SSL_OP_ALL.
9450 SSL_OP_ALL is usually employed when compatibility with weird SSL
9451 implementations is desired (e.g. '-bugs' option to 's_client' and
9452 's_server'), so the new option is automatically set in many
9456 *) Changes in security patch:
9458 Changes marked "(CHATS)" were sponsored by the Defense Advanced
9459 Research Projects Agency (DARPA) and Air Force Research Laboratory,
9460 Air Force Materiel Command, USAF, under agreement number
9463 *) Add various sanity checks to asn1_get_length() to reject
9464 the ASN1 length bytes if they exceed sizeof(long), will appear
9465 negative or the content length exceeds the length of the
9466 supplied buffer. (CVE-2002-0659)
9467 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9469 *) Assertions for various potential buffer overflows, not known to
9471 [Ben Laurie (CHATS)]
9473 *) Various temporary buffers to hold ASCII versions of integers were
9474 too small for 64 bit platforms. (CVE-2002-0655)
9475 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
9477 *) Remote buffer overflow in SSL3 protocol - an attacker could
9478 supply an oversized session ID to a client. (CVE-2002-0656)
9479 [Ben Laurie (CHATS)]
9481 *) Remote buffer overflow in SSL2 protocol - an attacker could
9482 supply an oversized client master key. (CVE-2002-0656)
9483 [Ben Laurie (CHATS)]
9485 Changes between 0.9.6c and 0.9.6d [9 May 2002]
9487 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
9488 encoded as NULL) with id-dsa-with-sha1.
9489 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
9491 *) Check various X509_...() return values in apps/req.c.
9492 [Nils Larsch <nla@trustcenter.de>]
9494 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
9495 an end-of-file condition would erroneously be flagged, when the CRLF
9496 was just at the end of a processed block. The bug was discovered when
9497 processing data through a buffering memory BIO handing the data to a
9498 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
9499 <ptsekov@syntrex.com> and Nedelcho Stanev.
9502 *) Implement a countermeasure against a vulnerability recently found
9503 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
9504 before application data chunks to avoid the use of known IVs
9505 with data potentially chosen by the attacker.
9508 *) Fix length checks in ssl3_get_client_hello().
9511 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
9512 to prevent ssl3_read_internal() from incorrectly assuming that
9513 ssl3_read_bytes() found application data while handshake
9514 processing was enabled when in fact s->s3->in_read_app_data was
9515 merely automatically cleared during the initial handshake.
9516 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
9518 *) Fix object definitions for Private and Enterprise: they were not
9519 recognized in their shortname (=lowercase) representation. Extend
9520 obj_dat.pl to issue an error when using undefined keywords instead
9521 of silently ignoring the problem (Svenning Sorensen
9522 <sss@sss.dnsalias.net>).
9525 *) Fix DH_generate_parameters() so that it works for 'non-standard'
9526 generators, i.e. generators other than 2 and 5. (Previously, the
9527 code did not properly initialise the 'add' and 'rem' values to
9528 BN_generate_prime().)
9530 In the new general case, we do not insist that 'generator' is
9531 actually a primitive root: This requirement is rather pointless;
9532 a generator of the order-q subgroup is just as good, if not
9536 *) Map new X509 verification errors to alerts. Discovered and submitted by
9537 Tom Wu <tom@arcot.com>.
9540 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
9541 returning non-zero before the data has been completely received
9542 when using non-blocking I/O.
9543 [Bodo Moeller; problem pointed out by John Hughes]
9545 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
9546 [Ben Laurie, Lutz Jaenicke]
9548 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
9549 Yoram Zahavi <YoramZ@gilian.com>).
9552 *) Add information about CygWin 1.3 and on, and preserve proper
9553 configuration for the versions before that.
9554 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
9556 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
9557 check whether we deal with a copy of a session and do not delete from
9558 the cache in this case. Problem reported by "Izhar Shoshani Levi"
9559 <izhar@checkpoint.com>.
9562 *) Do not store session data into the internal session cache, if it
9563 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
9564 flag is set). Proposed by Aslam <aslam@funk.com>.
9567 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
9571 *) [In 0.9.6d-engine release:]
9572 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
9573 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
9575 *) Add the configuration target linux-s390x.
9576 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
9578 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
9579 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
9580 variable as an indication that a ClientHello message has been
9581 received. As the flag value will be lost between multiple
9582 invocations of ssl3_accept when using non-blocking I/O, the
9583 function may not be aware that a handshake has actually taken
9584 place, thus preventing a new session from being added to the
9587 To avoid this problem, we now set s->new_session to 2 instead of
9588 using a local variable.
9589 [Lutz Jaenicke, Bodo Moeller]
9591 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
9592 if the SSL_R_LENGTH_MISMATCH error is detected.
9593 [Geoff Thorpe, Bodo Moeller]
9595 *) New 'shared_ldflag' column in Configure platform table.
9598 *) Fix EVP_CIPHER_mode macro.
9599 ["Dan S. Camper" <dan@bti.net>]
9601 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
9602 type, we must throw them away by setting rr->length to 0.
9603 [D P Chang <dpc@qualys.com>]
9605 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
9607 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
9608 <Dominikus.Scherkl@biodata.com>. (The previous implementation
9609 worked incorrectly for those cases where range = 10..._2 and
9610 3*range is two bits longer than range.)
9613 *) Only add signing time to PKCS7 structures if it is not already
9617 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
9618 OBJ_ld_ce should be OBJ_id_ce.
9619 Also some ip-pda OIDs in crypto/objects/objects.txt were
9620 incorrect (cf. RFC 3039).
9621 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
9623 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
9624 returns early because it has nothing to do.
9625 [Andy Schneider <andy.schneider@bjss.co.uk>]
9627 *) [In 0.9.6c-engine release:]
9628 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
9629 [Andy Schneider <andy.schneider@bjss.co.uk>]
9631 *) [In 0.9.6c-engine release:]
9632 Add support for Cryptographic Appliance's keyserver technology.
9633 (Use engine 'keyclient')
9634 [Cryptographic Appliances and Geoff Thorpe]
9636 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
9637 is called via tools/c89.sh because arguments have to be
9638 rearranged (all '-L' options must appear before the first object
9640 [Richard Shapiro <rshapiro@abinitio.com>]
9642 *) [In 0.9.6c-engine release:]
9643 Add support for Broadcom crypto accelerator cards, backported
9645 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
9647 *) [In 0.9.6c-engine release:]
9648 Add support for SureWare crypto accelerator cards from
9649 Baltimore Technologies. (Use engine 'sureware')
9650 [Baltimore Technologies and Mark Cox]
9652 *) [In 0.9.6c-engine release:]
9653 Add support for crypto accelerator cards from Accelerated
9654 Encryption Processing, www.aep.ie. (Use engine 'aep')
9655 [AEP Inc. and Mark Cox]
9657 *) Add a configuration entry for gcc on UnixWare.
9658 [Gary Benson <gbenson@redhat.com>]
9660 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
9661 messages are stored in a single piece (fixed-length part and
9662 variable-length part combined) and fix various bugs found on the way.
9665 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
9666 instead. BIO_gethostbyname() does not know what timeouts are
9667 appropriate, so entries would stay in cache even when they have
9669 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
9671 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
9672 faced with a pathologically small ClientHello fragment that does
9673 not contain client_version: Instead of aborting with an error,
9674 simply choose the highest available protocol version (i.e.,
9675 TLS 1.0 unless it is disabled). In practice, ClientHello
9676 messages are never sent like this, but this change gives us
9677 strictly correct behaviour at least for TLS.
9680 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
9681 never resets s->method to s->ctx->method when called from within
9682 one of the SSL handshake functions.
9683 [Bodo Moeller; problem pointed out by Niko Baric]
9685 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
9686 (sent using the client's version number) if client_version is
9687 smaller than the protocol version in use. Also change
9688 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
9689 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
9690 the client will at least see that alert.
9693 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
9697 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
9698 client receives HelloRequest while in a handshake.
9699 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
9701 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
9702 should end in 'break', not 'goto end' which circumvents various
9703 cleanups done in state SSL_ST_OK. But session related stuff
9704 must be disabled for SSL_ST_OK in the case that we just sent a
9707 Also avoid some overhead by not calling ssl_init_wbio_buffer()
9708 before just sending a HelloRequest.
9709 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
9711 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
9712 reveal whether illegal block cipher padding was found or a MAC
9713 verification error occurred. (Neither SSLerr() codes nor alerts
9714 are directly visible to potential attackers, but the information
9715 may leak via logfiles.)
9717 Similar changes are not required for the SSL 2.0 implementation
9718 because the number of padding bytes is sent in clear for SSL 2.0,
9719 and the extra bytes are just ignored. However ssl/s2_pkt.c
9720 failed to verify that the purported number of padding bytes is in
9724 *) Add OpenUNIX-8 support including shared libraries
9725 (Boyd Lynn Gerber <gerberb@zenez.com>).
9728 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
9729 'wristwatch attack' using huge encoding parameters (cf.
9730 James H. Manger's CRYPTO 2001 paper). Note that the
9731 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
9732 encoding parameters and hence was not vulnerable.
9735 *) BN_sqr() bug fix.
9736 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
9738 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
9739 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
9740 followed by modular reduction.
9741 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
9743 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
9744 equivalent based on BN_pseudo_rand() instead of BN_rand().
9747 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
9748 This function was broken, as the check for a new client hello message
9749 to handle SGC did not allow these large messages.
9750 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
9753 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
9756 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
9757 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
9760 *) Rework the configuration and shared library support for Tru64 Unix.
9761 The configuration part makes use of modern compiler features and
9762 still retains old compiler behavior for those that run older versions
9763 of the OS. The shared library support part includes a variant that
9764 uses the RPATH feature, and is available through the special
9765 configuration target "alpha-cc-rpath", which will never be selected
9767 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
9769 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
9770 with the same message size as in ssl3_get_certificate_request().
9771 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
9772 messages might inadvertently be reject as too long.
9773 [Petr Lampa <lampa@fee.vutbr.cz>]
9775 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
9778 *) Modified SSL library such that the verify_callback that has been set
9779 specificly for an SSL object with SSL_set_verify() is actually being
9780 used. Before the change, a verify_callback set with this function was
9781 ignored and the verify_callback() set in the SSL_CTX at the time of
9782 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
9783 to allow the necessary settings.
9786 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
9787 explicitly to NULL, as at least on Solaris 8 this seems not always to be
9788 done automatically (in contradiction to the requirements of the C
9789 standard). This made problems when used from OpenSSH.
9792 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
9793 dh->length and always used
9795 BN_rand_range(priv_key, dh->p).
9797 BN_rand_range() is not necessary for Diffie-Hellman, and this
9798 specific range makes Diffie-Hellman unnecessarily inefficient if
9799 dh->length (recommended exponent length) is much smaller than the
9800 length of dh->p. We could use BN_rand_range() if the order of
9801 the subgroup was stored in the DH structure, but we only have
9806 BN_rand(priv_key, l, ...)
9808 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
9814 RSA_eay_public_encrypt
9815 RSA_eay_private_decrypt
9816 RSA_eay_private_encrypt (signing)
9817 RSA_eay_public_decrypt (signature verification)
9819 (default implementations for RSA_public_encrypt,
9820 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
9821 always reject numbers >= n.
9824 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
9825 to synchronize access to 'locking_thread'. This is necessary on
9826 systems where access to 'locking_thread' (an 'unsigned long'
9827 variable) is not atomic.
9830 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
9831 *before* setting the 'crypto_lock_rand' flag. The previous code had
9832 a race condition if 0 is a valid thread ID.
9833 [Travis Vitek <vitek@roguewave.com>]
9835 *) Add support for shared libraries under Irix.
9836 [Albert Chin-A-Young <china@thewrittenword.com>]
9838 *) Add configuration option to build on Linux on both big-endian and
9840 [Ralf Baechle <ralf@uni-koblenz.de>]
9842 *) Add the possibility to create shared libraries on HP-UX.
9845 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
9847 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
9848 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
9849 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
9850 PRNG state recovery was possible based on the output of
9851 one PRNG request appropriately sized to gain knowledge on
9852 'md' followed by enough consecutive 1-byte PRNG requests
9853 to traverse all of 'state'.
9855 1. When updating 'md_local' (the current thread's copy of 'md')
9856 during PRNG output generation, hash all of the previous
9857 'md_local' value, not just the half used for PRNG output.
9859 2. Make the number of bytes from 'state' included into the hash
9860 independent from the number of PRNG bytes requested.
9862 The first measure alone would be sufficient to avoid
9863 Markku-Juhani's attack. (Actually it had never occurred
9864 to me that the half of 'md_local' used for chaining was the
9865 half from which PRNG output bytes were taken -- I had always
9866 assumed that the secret half would be used.) The second
9867 measure makes sure that additional data from 'state' is never
9868 mixed into 'md_local' in small portions; this heuristically
9869 further strengthens the PRNG.
9872 *) Fix crypto/bn/asm/mips3.s.
9875 *) When only the key is given to "enc", the IV is undefined. Print out
9876 an error message in this case.
9879 *) Handle special case when X509_NAME is empty in X509 printing routines.
9882 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
9883 positive and less than q.
9886 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
9887 used: it isn't thread safe and the add_lock_callback should handle
9889 [Paul Rose <Paul.Rose@bridge.com>]
9891 *) Verify that incoming data obeys the block size in
9892 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
9896 [Ulf Möller, Bodo Möller]
9898 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
9899 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
9900 when fixing the server behaviour for backwards-compatible 'client
9901 hello' messages. (Note that the attack is impractical against
9902 SSL 3.0 and TLS 1.0 anyway because length and version checking
9903 means that the probability of guessing a valid ciphertext is
9904 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
9907 Before 0.9.5, the countermeasure (hide the error by generating a
9908 random 'decryption result') did not work properly because
9909 ERR_clear_error() was missing, meaning that SSL_get_error() would
9910 detect the supposedly ignored error.
9912 Both problems are now fixed.
9915 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
9916 (previously it was 1024).
9919 *) Fix for compatibility mode trust settings: ignore trust settings
9920 unless some valid trust or reject settings are present.
9923 *) Fix for blowfish EVP: its a variable length cipher.
9926 *) Fix various bugs related to DSA S/MIME verification. Handle missing
9927 parameters in DSA public key structures and return an error in the
9928 DSA routines if parameters are absent.
9931 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
9932 in the current directory if neither $RANDFILE nor $HOME was set.
9933 RAND_file_name() in 0.9.6a returned NULL in this case. This has
9934 caused some confusion to Windows users who haven't defined $HOME.
9935 Thus RAND_file_name() is changed again: e_os.h can define a
9936 DEFAULT_HOME, which will be used if $HOME is not set.
9937 For Windows, we use "C:"; on other platforms, we still require
9938 environment variables.
9940 *) Move 'if (!initialized) RAND_poll()' into regions protected by
9941 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
9942 having multiple threads call RAND_poll() concurrently.
9945 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
9946 combination of a flag and a thread ID variable.
9947 Otherwise while one thread is in ssleay_rand_bytes (which sets the
9948 flag), *other* threads can enter ssleay_add_bytes without obeying
9949 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
9950 that they do not hold after the first thread unsets add_do_not_lock).
9953 *) Change bctest again: '-x' expressions are not available in all
9957 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
9959 *) Fix a couple of memory leaks in PKCS7_dataDecode()
9960 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
9962 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
9963 the default extension for executables, if any. Also, make the perl
9964 scripts that use symlink() to test if it really exists and use "cp"
9965 if it doesn't. All this made OpenSSL compilable and installable in
9969 *) Fix for asn1_GetSequence() for indefinite length constructed data.
9970 If SEQUENCE is length is indefinite just set c->slen to the total
9971 amount of data available.
9972 [Steve Henson, reported by shige@FreeBSD.org]
9973 [This change does not apply to 0.9.7.]
9975 *) Change bctest to avoid here-documents inside command substitution
9976 (workaround for FreeBSD /bin/sh bug).
9977 For compatibility with Ultrix, avoid shell functions (introduced
9978 in the bctest version that searches along $PATH).
9981 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
9982 with des_encrypt() defined on some operating systems, like Solaris
9986 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
9987 On the Importance of Eliminating Errors in Cryptographic
9988 Computations, J. Cryptology 14 (2001) 2, 101-119,
9989 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
9992 *) MIPS assembler BIGNUM division bug fix.
9995 *) Disabled incorrect Alpha assembler code.
9998 *) Fix PKCS#7 decode routines so they correctly update the length
9999 after reading an EOC for the EXPLICIT tag.
10001 [This change does not apply to 0.9.7.]
10003 *) Fix bug in PKCS#12 key generation routines. This was triggered
10004 if a 3DES key was generated with a 0 initial byte. Include
10005 PKCS12_BROKEN_KEYGEN compilation option to retain the old
10006 (but broken) behaviour.
10009 *) Enhance bctest to search for a working bc along $PATH and print
10011 [Tim Rice <tim@multitalents.net> via Richard Levitte]
10013 *) Fix memory leaks in err.c: free err_data string if necessary;
10014 don't write to the wrong index in ERR_set_error_data.
10017 *) Implement ssl23_peek (analogous to ssl23_read), which previously
10021 *) Replace rdtsc with _emit statements for VC++ version 5.
10022 [Jeremy Cooper <jeremy@baymoo.org>]
10024 *) Make it possible to reuse SSLv2 sessions.
10027 *) In copy_email() check for >= 0 as a return value for
10028 X509_NAME_get_index_by_NID() since 0 is a valid index.
10029 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
10031 *) Avoid coredump with unsupported or invalid public keys by checking if
10032 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
10033 PKCS7_verify() fails with non detached data.
10036 *) Don't use getenv in library functions when run as setuid/setgid.
10037 New function OPENSSL_issetugid().
10040 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
10041 due to incorrect handling of multi-threading:
10043 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
10045 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
10047 3. Count how many times MemCheck_off() has been called so that
10048 nested use can be treated correctly. This also avoids
10049 inband-signalling in the previous code (which relied on the
10050 assumption that thread ID 0 is impossible).
10053 *) Add "-rand" option also to s_client and s_server.
10056 *) Fix CPU detection on Irix 6.x.
10057 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
10058 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
10060 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
10063 [This change does not apply to 0.9.7.]
10065 *) Use the cached encoding of an X509_NAME structure rather than
10066 copying it. This is apparently the reason for the libsafe "errors"
10067 but the code is actually correct.
10070 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
10071 Bleichenbacher's DSA attack.
10072 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
10073 to be set and top=0 forces the highest bit to be set; top=-1 is new
10074 and leaves the highest bit random.
10075 [Ulf Moeller, Bodo Moeller]
10077 *) In the NCONF_...-based implementations for CONF_... queries
10078 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
10079 a temporary CONF structure with the data component set to NULL
10080 (which gives segmentation faults in lh_retrieve).
10081 Instead, use NULL for the CONF pointer in CONF_get_string and
10082 CONF_get_number (which may use environment variables) and directly
10083 return NULL from CONF_get_section.
10086 *) Fix potential buffer overrun for EBCDIC.
10089 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
10090 keyUsage if basicConstraints absent for a CA.
10093 *) Make SMIME_write_PKCS7() write mail header values with a format that
10094 is more generally accepted (no spaces before the semicolon), since
10095 some programs can't parse those values properly otherwise. Also make
10096 sure BIO's that break lines after each write do not create invalid
10100 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
10101 macros previously used would not encode an empty SEQUENCE OF
10102 and break the signature.
10104 [This change does not apply to 0.9.7.]
10106 *) Zero the premaster secret after deriving the master secret in
10110 *) Add some EVP_add_digest_alias registrations (as found in
10111 OpenSSL_add_all_digests()) to SSL_library_init()
10112 aka OpenSSL_add_ssl_algorithms(). This provides improved
10113 compatibility with peers using X.509 certificates
10114 with unconventional AlgorithmIdentifier OIDs.
10117 *) Fix for Irix with NO_ASM.
10118 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
10120 *) ./config script fixes.
10121 [Ulf Moeller, Richard Levitte]
10123 *) Fix 'openssl passwd -1'.
10126 *) Change PKCS12_key_gen_asc() so it can cope with non null
10127 terminated strings whose length is passed in the passlen
10128 parameter, for example from PEM callbacks. This was done
10129 by adding an extra length parameter to asc2uni().
10130 [Steve Henson, reported by <oddissey@samsung.co.kr>]
10132 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
10133 call failed, free the DSA structure.
10136 *) Fix to uni2asc() to cope with zero length Unicode strings.
10137 These are present in some PKCS#12 files.
10140 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
10141 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
10142 when writing a 32767 byte record.
10143 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
10145 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
10146 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
10148 (RSA objects have a reference count access to which is protected
10149 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
10150 so they are meant to be shared between threads.)
10151 [Bodo Moeller, Geoff Thorpe; original patch submitted by
10152 "Reddie, Steven" <Steven.Reddie@ca.com>]
10154 *) Fix a deadlock in CRYPTO_mem_leaks().
10157 *) Use better test patterns in bntest.
10160 *) rand_win.c fix for Borland C.
10163 *) BN_rshift bugfix for n == 0.
10166 *) Add a 'bctest' script that checks for some known 'bc' bugs
10167 so that 'make test' does not abort just because 'bc' is broken.
10170 *) Store verify_result within SSL_SESSION also for client side to
10171 avoid potential security hole. (Re-used sessions on the client side
10172 always resulted in verify_result==X509_V_OK, not using the original
10173 result of the server certificate verification.)
10176 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
10177 SSL3_RT_APPLICATION_DATA, return 0.
10178 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
10182 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
10183 releases, have been re-implemented by renaming the previous
10184 implementations of ssl2_read and ssl3_read to ssl2_read_internal
10185 and ssl3_read_internal, respectively, and adding 'peek' parameters
10186 to them. The new ssl[23]_{read,peek} functions are calls to
10187 ssl[23]_read_internal with the 'peek' flag set appropriately.
10188 A 'peek' parameter has also been added to ssl3_read_bytes, which
10189 does the actual work for ssl3_read_internal.
10192 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
10193 the method-specific "init()" handler. Also clean up ex_data after
10194 calling the method-specific "finish()" handler. Previously, this was
10195 happening the other way round.
10198 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
10199 The previous value, 12, was not always sufficient for BN_mod_exp().
10202 *) Make sure that shared libraries get the internal name engine with
10203 the full version number and not just 0. This should mark the
10204 shared libraries as not backward compatible. Of course, this should
10205 be changed again when we can guarantee backward binary compatibility.
10208 *) Fix typo in get_cert_by_subject() in by_dir.c
10209 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
10211 *) Rework the system to generate shared libraries:
10213 - Make note of the expected extension for the shared libraries and
10214 if there is a need for symbolic links from for example libcrypto.so.0
10215 to libcrypto.so.0.9.7. There is extended info in Configure for
10218 - Make as few rebuilds of the shared libraries as possible.
10220 - Still avoid linking the OpenSSL programs with the shared libraries.
10222 - When installing, install the shared libraries separately from the
10226 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
10228 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
10229 and not in SSL_clear because the latter is also used by the
10230 accept/connect functions; previously, the settings made by
10231 SSL_set_read_ahead would be lost during the handshake.
10232 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
10234 *) Correct util/mkdef.pl to be selective about disabled algorithms.
10235 Previously, it would create entries for disabled algorithms no
10239 *) Added several new manual pages for SSL_* function.
10242 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
10244 *) In ssl23_get_client_hello, generate an error message when faced
10245 with an initial SSL 3.0/TLS record that is too small to contain the
10246 first two bytes of the ClientHello message, i.e. client_version.
10247 (Note that this is a pathologic case that probably has never happened
10248 in real life.) The previous approach was to use the version number
10249 from the record header as a substitute; but our protocol choice
10250 should not depend on that one because it is not authenticated
10251 by the Finished messages.
10254 *) More robust randomness gathering functions for Windows.
10255 [Jeffrey Altman <jaltman@columbia.edu>]
10257 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
10258 not set then we don't setup the error code for issuer check errors
10259 to avoid possibly overwriting other errors which the callback does
10260 handle. If an application does set the flag then we assume it knows
10261 what it is doing and can handle the new informational codes
10265 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
10266 a general "ANY" type, as such it should be able to decode anything
10267 including tagged types. However it didn't check the class so it would
10268 wrongly interpret tagged types in the same way as their universal
10269 counterpart and unknown types were just rejected. Changed so that the
10270 tagged and unknown types are handled in the same way as a SEQUENCE:
10271 that is the encoding is stored intact. There is also a new type
10272 "V_ASN1_OTHER" which is used when the class is not universal, in this
10273 case we have no idea what the actual type is so we just lump them all
10277 *) On VMS, stdout may very well lead to a file that is written to
10278 in a record-oriented fashion. That means that every write() will
10279 write a separate record, which will be read separately by the
10280 programs trying to read from it. This can be very confusing.
10282 The solution is to put a BIO filter in the way that will buffer
10283 text until a linefeed is reached, and then write everything a
10284 line at a time, so every record written will be an actual line,
10285 not chunks of lines and not (usually doesn't happen, but I've
10286 seen it once) several lines in one record. BIO_f_linebuffer() is
10289 Currently, it's a VMS-only method, because that's where it has
10290 been tested well enough.
10293 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
10294 it can return incorrect results.
10295 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
10296 but it was in 0.9.6-beta[12].)
10299 *) Disable the check for content being present when verifying detached
10300 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
10301 include zero length content when signing messages.
10304 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
10305 BIO_ctrl (for BIO pairs).
10308 *) Add DSO method for VMS.
10311 *) Bug fix: Montgomery multiplication could produce results with the
10315 *) Add RPM specification openssl.spec and modify it to build three
10316 packages. The default package contains applications, application
10317 documentation and run-time libraries. The devel package contains
10318 include files, static libraries and function documentation. The
10319 doc package contains the contents of the doc directory. The original
10320 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
10323 *) Add a large number of documentation files for many SSL routines.
10324 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10326 *) Add a configuration entry for Sony News 4.
10327 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
10329 *) Don't set the two most significant bits to one when generating a
10330 random number < q in the DSA library.
10333 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
10334 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
10335 the underlying transport is blocking) if a handshake took place.
10336 (The default behaviour is needed by applications such as s_client
10337 and s_server that use select() to determine when to use SSL_read;
10338 but for applications that know in advance when to expect data, it
10339 just makes things more complicated.)
10342 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
10346 *) Add a few more EBCDIC conditionals that make `req' and `x509'
10347 work better on such systems.
10348 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10350 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
10351 Update PKCS12_parse() so it copies the friendlyName and the
10352 keyid to the certificates aux info.
10355 *) Fix bug in PKCS7_verify() which caused an infinite loop
10356 if there was more than one signature.
10357 [Sven Uszpelkat <su@celocom.de>]
10359 *) Major change in util/mkdef.pl to include extra information
10360 about each symbol, as well as presenting variables as well
10361 as functions. This change means that there's n more need
10362 to rebuild the .num files when some algorithms are excluded.
10365 *) Allow the verify time to be set by an application,
10366 rather than always using the current time.
10369 *) Phase 2 verify code reorganisation. The certificate
10370 verify code now looks up an issuer certificate by a
10371 number of criteria: subject name, authority key id
10372 and key usage. It also verifies self signed certificates
10373 by the same criteria. The main comparison function is
10374 X509_check_issued() which performs these checks.
10376 Lot of changes were necessary in order to support this
10377 without completely rewriting the lookup code.
10379 Authority and subject key identifier are now cached.
10381 The LHASH 'certs' is X509_STORE has now been replaced
10382 by a STACK_OF(X509_OBJECT). This is mainly because an
10383 LHASH can't store or retrieve multiple objects with
10384 the same hash value.
10386 As a result various functions (which were all internal
10387 use only) have changed to handle the new X509_STORE
10388 structure. This will break anything that messed round
10389 with X509_STORE internally.
10391 The functions X509_STORE_add_cert() now checks for an
10392 exact match, rather than just subject name.
10394 The X509_STORE API doesn't directly support the retrieval
10395 of multiple certificates matching a given criteria, however
10396 this can be worked round by performing a lookup first
10397 (which will fill the cache with candidate certificates)
10398 and then examining the cache for matches. This is probably
10399 the best we can do without throwing out X509_LOOKUP
10400 entirely (maybe later...).
10402 The X509_VERIFY_CTX structure has been enhanced considerably.
10404 All certificate lookup operations now go via a get_issuer()
10405 callback. Although this currently uses an X509_STORE it
10406 can be replaced by custom lookups. This is a simple way
10407 to bypass the X509_STORE hackery necessary to make this
10408 work and makes it possible to use more efficient techniques
10409 in future. A very simple version which uses a simple
10410 STACK for its trusted certificate store is also provided
10411 using X509_STORE_CTX_trusted_stack().
10413 The verify_cb() and verify() callbacks now have equivalents
10414 in the X509_STORE_CTX structure.
10416 X509_STORE_CTX also has a 'flags' field which can be used
10417 to customise the verify behaviour.
10420 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
10421 excludes S/MIME capabilities.
10424 *) When a certificate request is read in keep a copy of the
10425 original encoding of the signed data and use it when outputting
10426 again. Signatures then use the original encoding rather than
10427 a decoded, encoded version which may cause problems if the
10428 request is improperly encoded.
10431 *) For consistency with other BIO_puts implementations, call
10432 buffer_write(b, ...) directly in buffer_puts instead of calling
10435 In BIO_puts, increment b->num_write as in BIO_write.
10436 [Peter.Sylvester@EdelWeb.fr]
10438 *) Fix BN_mul_word for the case where the word is 0. (We have to use
10439 BN_zero, we may not return a BIGNUM with an array consisting of
10440 words set to zero.)
10443 *) Avoid calling abort() from within the library when problems are
10444 detected, except if preprocessor symbols have been defined
10445 (such as REF_CHECK, BN_DEBUG etc.).
10448 *) New openssl application 'rsautl'. This utility can be
10449 used for low level RSA operations. DER public key
10450 BIO/fp routines also added.
10453 *) New Configure entry and patches for compiling on QNX 4.
10454 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
10456 *) A demo state-machine implementation was sponsored by
10457 Nuron (http://www.nuron.com/) and is now available in
10458 demos/state_machine.
10461 *) New options added to the 'dgst' utility for signature
10462 generation and verification.
10465 *) Unrecognized PKCS#7 content types are now handled via a
10466 catch all ASN1_TYPE structure. This allows unsupported
10467 types to be stored as a "blob" and an application can
10468 encode and decode it manually.
10471 *) Fix various signed/unsigned issues to make a_strex.c
10472 compile under VC++.
10473 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
10475 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
10476 length if passed a buffer. ASN1_INTEGER_to_BN failed
10477 if passed a NULL BN and its argument was negative.
10478 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
10480 *) Modification to PKCS#7 encoding routines to output definite
10481 length encoding. Since currently the whole structures are in
10482 memory there's not real point in using indefinite length
10483 constructed encoding. However if OpenSSL is compiled with
10484 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
10487 *) Added BIO_vprintf() and BIO_vsnprintf().
10490 *) Added more prefixes to parse for in the strings written
10491 through a logging bio, to cover all the levels that are available
10492 through syslog. The prefixes are now:
10494 PANIC, EMERG, EMR => LOG_EMERG
10495 ALERT, ALR => LOG_ALERT
10496 CRIT, CRI => LOG_CRIT
10497 ERROR, ERR => LOG_ERR
10498 WARNING, WARN, WAR => LOG_WARNING
10499 NOTICE, NOTE, NOT => LOG_NOTICE
10500 INFO, INF => LOG_INFO
10501 DEBUG, DBG => LOG_DEBUG
10503 and as before, if none of those prefixes are present at the
10504 beginning of the string, LOG_ERR is chosen.
10506 On Win32, the LOG_* levels are mapped according to this:
10508 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
10509 LOG_WARNING => EVENTLOG_WARNING_TYPE
10510 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
10514 *) Made it possible to reconfigure with just the configuration
10515 argument "reconf" or "reconfigure". The command line arguments
10516 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
10517 and are retrieved from there when reconfiguring.
10520 *) MD4 implemented.
10521 [Assar Westerlund <assar@sics.se>, Richard Levitte]
10523 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
10526 *) The obj_dat.pl script was messing up the sorting of object
10527 names. The reason was that it compared the quoted version
10528 of strings as a result "OCSP" > "OCSP Signing" because
10529 " > SPACE. Changed script to store unquoted versions of
10530 names and add quotes on output. It was also omitting some
10531 names from the lookup table if they were given a default
10532 value (that is if SN is missing it is given the same
10533 value as LN and vice versa), these are now added on the
10534 grounds that if an object has a name we should be able to
10535 look it up. Finally added warning output when duplicate
10536 short or long names are found.
10539 *) Changes needed for Tandem NSK.
10540 [Scott Uroff <scott@xypro.com>]
10542 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
10543 RSA_padding_check_SSLv23(), special padding was never detected
10544 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
10545 version rollback attacks was not effective.
10547 In s23_clnt.c, don't use special rollback-attack detection padding
10548 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
10549 client; similarly, in s23_srvr.c, don't do the rollback check if
10550 SSL 2.0 is the only protocol enabled in the server.
10553 *) Make it possible to get hexdumps of unprintable data with 'openssl
10554 asn1parse'. By implication, the functions ASN1_parse_dump() and
10555 BIO_dump_indent() are added.
10558 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
10559 these print out strings and name structures based on various
10560 flags including RFC2253 support and proper handling of
10561 multibyte characters. Added options to the 'x509' utility
10562 to allow the various flags to be set.
10565 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
10566 Also change the functions X509_cmp_current_time() and
10567 X509_gmtime_adj() work with an ASN1_TIME structure,
10568 this will enable certificates using GeneralizedTime in validity
10569 dates to be checked.
10572 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
10573 negative public key encodings) on by default,
10574 NO_NEG_PUBKEY_BUG can be set to disable it.
10577 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
10578 content octets. An i2c_ASN1_OBJECT is unnecessary because
10579 the encoding can be trivially obtained from the structure.
10582 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
10583 not read locks (CRYPTO_r_[un]lock).
10586 *) A first attempt at creating official support for shared
10587 libraries through configuration. I've kept it so the
10588 default is static libraries only, and the OpenSSL programs
10589 are always statically linked for now, but there are
10590 preparations for dynamic linking in place.
10591 This has been tested on Linux and Tru64.
10594 *) Randomness polling function for Win9x, as described in:
10595 Peter Gutmann, Software Generation of Practically Strong
10599 *) Fix so PRNG is seeded in req if using an already existing
10603 *) New options to smime application. -inform and -outform
10604 allow alternative formats for the S/MIME message including
10605 PEM and DER. The -content option allows the content to be
10606 specified separately. This should allow things like Netscape
10607 form signing output easier to verify.
10610 *) Fix the ASN1 encoding of tags using the 'long form'.
10613 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
10614 STRING types. These convert content octets to and from the
10615 underlying type. The actual tag and length octets are
10616 already assumed to have been read in and checked. These
10617 are needed because all other string types have virtually
10618 identical handling apart from the tag. By having versions
10619 of the ASN1 functions that just operate on content octets
10620 IMPLICIT tagging can be handled properly. It also allows
10621 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
10622 and ASN1_INTEGER are identical apart from the tag.
10625 *) Change the handling of OID objects as follows:
10627 - New object identifiers are inserted in objects.txt, following
10628 the syntax given in objects.README.
10629 - objects.pl is used to process obj_mac.num and create a new
10631 - obj_dat.pl is used to create a new obj_dat.h, using the data in
10634 This is currently kind of a hack, and the perl code in objects.pl
10635 isn't very elegant, but it works as I intended. The simplest way
10636 to check that it worked correctly is to look in obj_dat.h and
10637 check the array nid_objs and make sure the objects haven't moved
10638 around (this is important!). Additions are OK, as well as
10639 consistent name changes.
10642 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
10645 *) Addition of the command line parameter '-rand file' to 'openssl req'.
10646 The given file adds to whatever has already been seeded into the
10647 random pool through the RANDFILE configuration file option or
10648 environment variable, or the default random state file.
10651 *) mkstack.pl now sorts each macro group into lexical order.
10652 Previously the output order depended on the order the files
10653 appeared in the directory, resulting in needless rewriting
10657 *) Patches to make OpenSSL compile under Win32 again. Mostly
10658 work arounds for the VC++ problem that it treats func() as
10659 func(void). Also stripped out the parts of mkdef.pl that
10660 added extra typesafe functions: these no longer exist.
10663 *) Reorganisation of the stack code. The macros are now all
10664 collected in safestack.h . Each macro is defined in terms of
10665 a "stack macro" of the form SKM_<name>(type, a, b). The
10666 DEBUG_SAFESTACK is now handled in terms of function casts,
10667 this has the advantage of retaining type safety without the
10668 use of additional functions. If DEBUG_SAFESTACK is not defined
10669 then the non typesafe macros are used instead. Also modified the
10670 mkstack.pl script to handle the new form. Needs testing to see
10671 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
10672 the default if no major problems. Similar behaviour for ASN1_SET_OF
10673 and PKCS12_STACK_OF.
10676 *) When some versions of IIS use the 'NET' form of private key the
10677 key derivation algorithm is different. Normally MD5(password) is
10678 used as a 128 bit RC4 key. In the modified case
10679 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
10680 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
10681 as the old Netscape_RSA functions except they have an additional
10682 'sgckey' parameter which uses the modified algorithm. Also added
10683 an -sgckey command line option to the rsa utility. Thanks to
10684 Adrian Peck <bertie@ncipher.com> for posting details of the modified
10685 algorithm to openssl-dev.
10688 *) The evp_local.h macros were using 'c.##kname' which resulted in
10689 invalid expansion on some systems (SCO 5.0.5 for example).
10690 Corrected to 'c.kname'.
10691 [Phillip Porch <root@theporch.com>]
10693 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
10694 a STACK of email addresses from a certificate or request, these look
10695 in the subject name and the subject alternative name extensions and
10696 omit any duplicate addresses.
10699 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
10700 This makes DSA verification about 2 % faster.
10703 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
10704 (meaning that now 2^5 values will be precomputed, which is only 4 KB
10705 plus overhead for 1024 bit moduli).
10706 This makes exponentiations about 0.5 % faster for 1024 bit
10707 exponents (as measured by "openssl speed rsa2048").
10710 *) Rename memory handling macros to avoid conflicts with other
10712 Malloc => OPENSSL_malloc
10713 Malloc_locked => OPENSSL_malloc_locked
10714 Realloc => OPENSSL_realloc
10715 Free => OPENSSL_free
10718 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
10719 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
10722 *) CygWin32 support.
10723 [John Jarvie <jjarvie@newsguy.com>]
10725 *) The type-safe stack code has been rejigged. It is now only compiled
10726 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
10727 by default all type-specific stack functions are "#define"d back to
10728 standard stack functions. This results in more streamlined output
10729 but retains the type-safety checking possibilities of the original
10733 *) The STACK code has been cleaned up, and certain type declarations
10734 that didn't make a lot of sense have been brought in line. This has
10735 also involved a cleanup of sorts in safestack.h to more correctly
10736 map type-safe stack functions onto their plain stack counterparts.
10737 This work has also resulted in a variety of "const"ifications of
10738 lots of the code, especially "_cmp" operations which should normally
10739 be prototyped with "const" parameters anyway.
10742 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
10743 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
10744 (The PRNG state consists of two parts, the large pool 'state' and 'md',
10745 where all of 'md' is used each time the PRNG is used, but 'state'
10746 is used only indexed by a cyclic counter. As entropy may not be
10747 well distributed from the beginning, 'md' is important as a
10748 chaining variable. However, the output function chains only half
10749 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
10750 all of 'md', and seeding with STATE_SIZE dummy bytes will result
10751 in all of 'state' being rewritten, with the new values depending
10752 on virtually all of 'md'. This overcomes the 80 bit limitation.)
10755 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
10756 the handshake is continued after ssl_verify_cert_chain();
10757 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
10758 can lead to 'unexplainable' connection aborts later.
10759 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
10761 *) Major EVP API cipher revision.
10762 Add hooks for extra EVP features. This allows various cipher
10763 parameters to be set in the EVP interface. Support added for variable
10764 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
10765 setting of RC2 and RC5 parameters.
10767 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
10770 Remove lots of duplicated code from the EVP library. For example *every*
10771 cipher init() function handles the 'iv' in the same way according to the
10772 cipher mode. They also all do nothing if the 'key' parameter is NULL and
10773 for CFB and OFB modes they zero ctx->num.
10775 New functionality allows removal of S/MIME code RC2 hack.
10777 Most of the routines have the same form and so can be declared in terms
10780 By shifting this to the top level EVP_CipherInit() it can be removed from
10781 all individual ciphers. If the cipher wants to handle IVs or keys
10782 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
10785 Change lots of functions like EVP_EncryptUpdate() to now return a
10786 value: although software versions of the algorithms cannot fail
10787 any installed hardware versions can.
10790 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
10791 this option is set, tolerate broken clients that send the negotiated
10792 protocol version number instead of the requested protocol version
10796 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
10797 i.e. non-zero for export ciphersuites, zero otherwise.
10798 Previous versions had this flag inverted, inconsistent with
10799 rsa_tmp_cb (..._TMP_RSA_CB).
10800 [Bodo Moeller; problem reported by Amit Chopra]
10802 *) Add missing DSA library text string. Work around for some IIS
10803 key files with invalid SEQUENCE encoding.
10806 *) Add a document (doc/standards.txt) that list all kinds of standards
10807 and so on that are implemented in OpenSSL.
10810 *) Enhance c_rehash script. Old version would mishandle certificates
10811 with the same subject name hash and wouldn't handle CRLs at all.
10812 Added -fingerprint option to crl utility, to support new c_rehash
10816 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
10819 *) Fix for SSL server purpose checking. Server checking was
10820 rejecting certificates which had extended key usage present
10821 but no ssl client purpose.
10822 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
10824 *) Make PKCS#12 code work with no password. The PKCS#12 spec
10825 is a little unclear about how a blank password is handled.
10826 Since the password in encoded as a BMPString with terminating
10827 double NULL a zero length password would end up as just the
10828 double NULL. However no password at all is different and is
10829 handled differently in the PKCS#12 key generation code. NS
10830 treats a blank password as zero length. MSIE treats it as no
10831 password on export: but it will try both on import. We now do
10832 the same: PKCS12_parse() tries zero length and no password if
10833 the password is set to "" or NULL (NULL is now a valid password:
10834 it wasn't before) as does the pkcs12 application.
10837 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
10838 perror when PEM_read_bio_X509_REQ fails, the error message must
10839 be obtained from the error queue.
10842 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
10843 it in ERR_remove_state if appropriate, and change ERR_get_state
10844 accordingly to avoid race conditions (this is necessary because
10845 thread_hash is no longer constant once set).
10848 *) Bugfix for linux-elf makefile.one.
10851 *) RSA_get_default_method() will now cause a default
10852 RSA_METHOD to be chosen if one doesn't exist already.
10853 Previously this was only set during a call to RSA_new()
10854 or RSA_new_method(NULL) meaning it was possible for
10855 RSA_get_default_method() to return NULL.
10858 *) Added native name translation to the existing DSO code
10859 that will convert (if the flag to do so is set) filenames
10860 that are sufficiently small and have no path information
10861 into a canonical native form. Eg. "blah" converted to
10862 "libblah.so" or "blah.dll" etc.
10865 *) New function ERR_error_string_n(e, buf, len) which is like
10866 ERR_error_string(e, buf), but writes at most 'len' bytes
10867 including the 0 terminator. For ERR_error_string_n, 'buf'
10869 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
10871 *) CONF library reworked to become more general. A new CONF
10872 configuration file reader "class" is implemented as well as a
10873 new functions (NCONF_*, for "New CONF") to handle it. The now
10874 old CONF_* functions are still there, but are reimplemented to
10875 work in terms of the new functions. Also, a set of functions
10876 to handle the internal storage of the configuration data is
10877 provided to make it easier to write new configuration file
10878 reader "classes" (I can definitely see something reading a
10879 configuration file in XML format, for example), called _CONF_*,
10880 or "the configuration storage API"...
10882 The new configuration file reading functions are:
10884 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
10885 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
10887 NCONF_default, NCONF_WIN32
10889 NCONF_dump_fp, NCONF_dump_bio
10891 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
10892 NCONF_new creates a new CONF object. This works in the same way
10893 as other interfaces in OpenSSL, like the BIO interface.
10894 NCONF_dump_* dump the internal storage of the configuration file,
10895 which is useful for debugging. All other functions take the same
10896 arguments as the old CONF_* functions wth the exception of the
10897 first that must be a `CONF *' instead of a `LHASH *'.
10899 To make it easer to use the new classes with the old CONF_* functions,
10900 the function CONF_set_default_method is provided.
10903 *) Add '-tls1' option to 'openssl ciphers', which was already
10904 mentioned in the documentation but had not been implemented.
10905 (This option is not yet really useful because even the additional
10906 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
10909 *) Initial DSO code added into libcrypto for letting OpenSSL (and
10910 OpenSSL-based applications) load shared libraries and bind to
10911 them in a portable way.
10912 [Geoff Thorpe, with contributions from Richard Levitte]
10914 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
10916 *) Make sure _lrotl and _lrotr are only used with MSVC.
10918 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
10919 (the default implementation of RAND_status).
10921 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
10922 to '-clrext' (= clear extensions), as intended and documented.
10923 [Bodo Moeller; inconsistency pointed out by Michael Attili
10924 <attili@amaxo.com>]
10926 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
10927 was larger than the MD block size.
10928 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
10930 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
10931 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
10932 using the passed key: if the passed key was a private key the result
10933 of X509_print(), for example, would be to print out all the private key
10937 *) des_quad_cksum() byte order bug fix.
10938 [Ulf Möller, using the problem description in krb4-0.9.7, where
10939 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
10941 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
10943 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
10945 *) For easily testing in shell scripts whether some command
10946 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
10947 returns with exit code 0 iff no command of the given name is available.
10948 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
10949 the output goes to stdout and nothing is printed to stderr.
10950 Additional arguments are always ignored.
10952 Since for each cipher there is a command of the same name,
10953 the 'no-cipher' compilation switches can be tested this way.
10955 ('openssl no-XXX' is not able to detect pseudo-commands such
10956 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
10959 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
10962 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
10963 is set; it will be thrown away anyway because each handshake creates
10965 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
10966 to parameters -- in previous versions (since OpenSSL 0.9.3) the
10967 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
10968 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
10971 *) New s_client option -ign_eof: EOF at stdin is ignored, and
10972 'Q' and 'R' lose their special meanings (quit/renegotiate).
10973 This is part of what -quiet does; unlike -quiet, -ign_eof
10974 does not suppress any output.
10977 *) Add compatibility options to the purpose and trust code. The
10978 purpose X509_PURPOSE_ANY is "any purpose" which automatically
10979 accepts a certificate or CA, this was the previous behaviour,
10980 with all the associated security issues.
10982 X509_TRUST_COMPAT is the old trust behaviour: only and
10983 automatically trust self signed roots in certificate store. A
10984 new trust setting X509_TRUST_DEFAULT is used to specify that
10985 a purpose has no associated trust setting and it should instead
10986 use the value in the default purpose.
10989 *) Fix the PKCS#8 DSA private key code so it decodes keys again
10990 and fix a memory leak.
10993 *) In util/mkerr.pl (which implements 'make errors'), preserve
10994 reason strings from the previous version of the .c file, as
10995 the default to have only downcase letters (and digits) in
10996 automatically generated reasons codes is not always appropriate.
10999 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
11000 using strerror. Previously, ERR_reason_error_string() returned
11001 library names as reason strings for SYSerr; but SYSerr is a special
11002 case where small numbers are errno values, not library numbers.
11005 *) Add '-dsaparam' option to 'openssl dhparam' application. This
11006 converts DSA parameters into DH parameters. (When creating parameters,
11007 DSA_generate_parameters is used.)
11010 *) Include 'length' (recommended exponent length) in C code generated
11011 by 'openssl dhparam -C'.
11014 *) The second argument to set_label in perlasm was already being used
11015 so couldn't be used as a "file scope" flag. Moved to third argument
11019 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
11020 instead of RAND_bytes for encryption IVs and salts.
11023 *) Include RAND_status() into RAND_METHOD instead of implementing
11024 it only for md_rand.c Otherwise replacing the PRNG by calling
11025 RAND_set_rand_method would be impossible.
11028 *) Don't let DSA_generate_key() enter an infinite loop if the random
11029 number generation fails.
11032 *) New 'rand' application for creating pseudo-random output.
11035 *) Added configuration support for Linux/IA64
11036 [Rolf Haberrecker <rolf@suse.de>]
11038 *) Assembler module support for Mingw32.
11041 *) Shared library support for HPUX (in shlib/).
11042 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
11044 *) Shared library support for Solaris gcc.
11045 [Lutz Behnke <behnke@trustcenter.de>]
11047 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
11049 *) PKCS7_encrypt() was adding text MIME headers twice because they
11050 were added manually and by SMIME_crlf_copy().
11053 *) In bntest.c don't call BN_rand with zero bits argument.
11054 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
11056 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
11057 case was implemented. This caused BN_div_recp() to fail occasionally.
11060 *) Add an optional second argument to the set_label() in the perl
11061 assembly language builder. If this argument exists and is set
11062 to 1 it signals that the assembler should use a symbol whose
11063 scope is the entire file, not just the current function. This
11064 is needed with MASM which uses the format label:: for this scope.
11065 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
11067 *) Change the ASN1 types so they are typedefs by default. Before
11068 almost all types were #define'd to ASN1_STRING which was causing
11069 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
11073 *) Change names of new functions to the new get1/get0 naming
11074 convention: After 'get1', the caller owns a reference count
11075 and has to call ..._free; 'get0' returns a pointer to some
11076 data structure without incrementing reference counters.
11077 (Some of the existing 'get' functions increment a reference
11078 counter, some don't.)
11079 Similarly, 'set1' and 'add1' functions increase reference
11080 counters or duplicate objects.
11083 *) Allow for the possibility of temp RSA key generation failure:
11084 the code used to assume it always worked and crashed on failure.
11087 *) Fix potential buffer overrun problem in BIO_printf().
11088 [Ulf Möller, using public domain code by Patrick Powell; problem
11089 pointed out by David Sacerdote <das33@cornell.edu>]
11091 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
11092 RAND_egd() and RAND_status(). In the command line application,
11093 the EGD socket can be specified like a seed file using RANDFILE
11097 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
11098 Some CAs (e.g. Verisign) distribute certificates in this form.
11101 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
11102 list to exclude them. This means that no special compilation option
11103 is needed to use anonymous DH: it just needs to be included in the
11107 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
11108 EVP_MD_type. The old functionality is available in a new macro called
11109 EVP_MD_md(). Change code that uses it and update docs.
11112 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
11113 where the 'void *' argument is replaced by a function pointer argument.
11114 Previously 'void *' was abused to point to functions, which works on
11115 many platforms, but is not correct. As these functions are usually
11116 called by macros defined in OpenSSL header files, most source code
11117 should work without changes.
11120 *) <openssl/opensslconf.h> (which is created by Configure) now contains
11121 sections with information on -D... compiler switches used for
11122 compiling the library so that applications can see them. To enable
11123 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
11124 must be defined. E.g.,
11125 #define OPENSSL_ALGORITHM_DEFINES
11126 #include <openssl/opensslconf.h>
11127 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
11128 [Richard Levitte, Ulf and Bodo Möller]
11130 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
11134 *) Change the 'other' type in certificate aux info to a STACK_OF
11135 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
11136 the required ASN1 format: arbitrary types determined by an OID.
11139 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
11140 argument to 'req'. This is not because the function is newer or
11141 better than others it just uses the work 'NEW' in the certificate
11142 request header lines. Some software needs this.
11145 *) Reorganise password command line arguments: now passwords can be
11146 obtained from various sources. Delete the PEM_cb function and make
11147 it the default behaviour: i.e. if the callback is NULL and the
11148 usrdata argument is not NULL interpret it as a null terminated pass
11149 phrase. If usrdata and the callback are NULL then the pass phrase
11150 is prompted for as usual.
11153 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
11154 the support is automatically enabled. The resulting binaries will
11155 autodetect the card and use it if present.
11156 [Ben Laurie and Compaq Inc.]
11158 *) Work around for Netscape hang bug. This sends certificate request
11159 and server done in one record. Since this is perfectly legal in the
11160 SSL/TLS protocol it isn't a "bug" option and is on by default. See
11161 the bugs/SSLv3 entry for more info.
11164 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
11167 *) Add -rand argument to smime and pkcs12 applications and read/write
11171 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
11174 *) Add command line password options to the remaining applications.
11177 *) Bug fix for BN_div_recp() for numerators with an even number of
11181 *) More tests in bntest.c, and changed test_bn output.
11184 *) ./config recognizes MacOS X now.
11187 *) Bug fix for BN_div() when the first words of num and divisor are
11188 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
11191 *) Add support for various broken PKCS#8 formats, and command line
11192 options to produce them.
11195 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
11196 get temporary BIGNUMs from a BN_CTX.
11199 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
11203 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
11204 include a #define from the old name to the new. The original intent
11205 was that statically linked binaries could for example just call
11206 SSLeay_add_all_ciphers() to just add ciphers to the table and not
11207 link with digests. This never worked because SSLeay_add_all_digests()
11208 and SSLeay_add_all_ciphers() were in the same source file so calling
11209 one would link with the other. They are now in separate source files.
11212 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
11215 *) Use a less unusual form of the Miller-Rabin primality test (it used
11216 a binary algorithm for exponentiation integrated into the Miller-Rabin
11217 loop, our standard modexp algorithms are faster).
11220 *) Support for the EBCDIC character set completed.
11221 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
11223 *) Source code cleanups: use const where appropriate, eliminate casts,
11224 use void * instead of char * in lhash.
11227 *) Bugfix: ssl3_send_server_key_exchange was not restartable
11228 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
11229 this the server could overwrite ephemeral keys that the client
11233 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
11234 using 50 iterations of the Rabin-Miller test.
11236 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
11237 iterations of the Rabin-Miller test as required by the appendix
11238 to FIPS PUB 186[-1]) instead of DSA_is_prime.
11239 As BN_is_prime_fasttest includes trial division, DSA parameter
11240 generation becomes much faster.
11242 This implies a change for the callback functions in DSA_is_prime
11243 and DSA_generate_parameters: The callback function is called once
11244 for each positive witness in the Rabin-Miller test, not just
11245 occasionally in the inner loop; and the parameters to the
11246 callback function now provide an iteration count for the outer
11247 loop rather than for the current invocation of the inner loop.
11248 DSA_generate_parameters additionally can call the callback
11249 function with an 'iteration count' of -1, meaning that a
11250 candidate has passed the trial division test (when q is generated
11251 from an application-provided seed, trial division is skipped).
11254 *) New function BN_is_prime_fasttest that optionally does trial
11255 division before starting the Rabin-Miller test and has
11256 an additional BN_CTX * argument (whereas BN_is_prime always
11257 has to allocate at least one BN_CTX).
11258 'callback(1, -1, cb_arg)' is called when a number has passed the
11259 trial division stage.
11262 *) Fix for bug in CRL encoding. The validity dates weren't being handled
11266 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
11269 *) New function BN_pseudo_rand().
11272 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
11273 bignum version of BN_from_montgomery() with the working code from
11274 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
11278 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
11279 made it impossible to use the same SSL_SESSION data structure in
11280 SSL2 clients in multiple threads.
11283 *) The return value of RAND_load_file() no longer counts bytes obtained
11284 by stat(). RAND_load_file(..., -1) is new and uses the complete file
11285 to seed the PRNG (previously an explicit byte count was required).
11286 [Ulf Möller, Bodo Möller]
11288 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
11289 used (char *) instead of (void *) and had casts all over the place.
11292 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
11295 *) Retain source code compatibility for BN_prime_checks macro:
11296 BN_is_prime(..., BN_prime_checks, ...) now uses
11297 BN_prime_checks_for_size to determine the appropriate number of
11298 Rabin-Miller iterations.
11301 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
11302 DH_CHECK_P_NOT_SAFE_PRIME.
11303 (Check if this is true? OpenPGP calls them "strong".)
11306 *) Merge the functionality of "dh" and "gendh" programs into a new program
11307 "dhparam". The old programs are retained for now but will handle DH keys
11308 (instead of parameters) in future.
11311 *) Make the ciphers, s_server and s_client programs check the return values
11312 when a new cipher list is set.
11315 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
11316 ciphers. Before when the 56bit ciphers were enabled the sorting was
11319 The syntax for the cipher sorting has been extended to support sorting by
11320 cipher-strength (using the strength_bits hard coded in the tables).
11321 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
11323 Fix a bug in the cipher-command parser: when supplying a cipher command
11324 string with an "undefined" symbol (neither command nor alphanumeric
11325 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
11326 an error is flagged.
11328 Due to the strength-sorting extension, the code of the
11329 ssl_create_cipher_list() function was completely rearranged. I hope that
11330 the readability was also increased :-)
11331 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
11333 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
11334 for the first serial number and places 2 in the serial number file. This
11335 avoids problems when the root CA is created with serial number zero and
11336 the first user certificate has the same issuer name and serial number
11340 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
11341 the new code. Add documentation for this stuff.
11344 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
11345 X509_*() to X509at_*() on the grounds that they don't handle X509
11346 structures and behave in an analogous way to the X509v3 functions:
11347 they shouldn't be called directly but wrapper functions should be used
11350 So we also now have some wrapper functions that call the X509at functions
11351 when passed certificate requests. (TO DO: similar things can be done with
11352 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
11353 things. Some of these need some d2i or i2d and print functionality
11354 because they handle more complex structures.)
11357 *) Add missing #ifndefs that caused missing symbols when building libssl
11358 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
11359 NO_RSA in ssl/s2*.c.
11360 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
11362 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
11363 has a return value which indicates the quality of the random data
11364 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
11365 error queue. New function RAND_pseudo_bytes() generates output that is
11366 guaranteed to be unique but not unpredictable. RAND_add is like
11367 RAND_seed, but takes an extra argument for an entropy estimate
11368 (RAND_seed always assumes full entropy).
11371 *) Do more iterations of Rabin-Miller probable prime test (specifically,
11372 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
11373 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
11374 in crypto/bn/bn_prime.c for the complete table). This guarantees a
11375 false-positive rate of at most 2^-80 for random input.
11378 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
11381 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
11382 in the 0.9.5 release), this returns the chain
11383 from an X509_CTX structure with a dup of the stack and all
11384 the X509 reference counts upped: so the stack will exist
11385 after X509_CTX_cleanup() has been called. Modify pkcs12.c
11388 Also make SSL_SESSION_print() print out the verify return
11392 *) Add manpage for the pkcs12 command. Also change the default
11393 behaviour so MAC iteration counts are used unless the new
11394 -nomaciter option is used. This improves file security and
11395 only older versions of MSIE (4.0 for example) need it.
11398 *) Honor the no-xxx Configure options when creating .DEF files.
11401 *) Add PKCS#10 attributes to field table: challengePassword,
11402 unstructuredName and unstructuredAddress. These are taken from
11403 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
11404 international characters are used.
11406 More changes to X509_ATTRIBUTE code: allow the setting of types
11407 based on strings. Remove the 'loc' parameter when adding
11408 attributes because these will be a SET OF encoding which is sorted
11412 *) Initial changes to the 'req' utility to allow request generation
11413 automation. This will allow an application to just generate a template
11414 file containing all the field values and have req construct the
11417 Initial support for X509_ATTRIBUTE handling. Stacks of these are
11418 used all over the place including certificate requests and PKCS#7
11419 structures. They are currently handled manually where necessary with
11420 some primitive wrappers for PKCS#7. The new functions behave in a
11421 manner analogous to the X509 extension functions: they allow
11422 attributes to be looked up by NID and added.
11424 Later something similar to the X509V3 code would be desirable to
11425 automatically handle the encoding, decoding and printing of the
11426 more complex types. The string types like challengePassword can
11427 be handled by the string table functions.
11429 Also modified the multi byte string table handling. Now there is
11430 a 'global mask' which masks out certain types. The table itself
11431 can use the flag STABLE_NO_MASK to ignore the mask setting: this
11432 is useful when for example there is only one permissible type
11433 (as in countryName) and using the mask might result in no valid
11437 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
11438 SSL_get_peer_finished to allow applications to obtain the latest
11439 Finished messages sent to the peer or expected from the peer,
11440 respectively. (SSL_get_peer_finished is usually the Finished message
11441 actually received from the peer, otherwise the protocol will be aborted.)
11443 As the Finished message are message digests of the complete handshake
11444 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
11445 be used for external authentication procedures when the authentication
11446 provided by SSL/TLS is not desired or is not enough.
11449 *) Enhanced support for Alpha Linux is added. Now ./config checks if
11450 the host supports BWX extension and if Compaq C is present on the
11451 $PATH. Just exploiting of the BWX extension results in 20-30%
11452 performance kick for some algorithms, e.g. DES and RC4 to mention
11453 a couple. Compaq C in turn generates ~20% faster code for MD5 and
11457 *) Add support for MS "fast SGC". This is arguably a violation of the
11458 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
11459 weak crypto and after checking the certificate is SGC a second one
11460 with strong crypto. MS SGC stops the first handshake after receiving
11461 the server certificate message and sends a second client hello. Since
11462 a server will typically do all the time consuming operations before
11463 expecting any further messages from the client (server key exchange
11464 is the most expensive) there is little difference between the two.
11466 To get OpenSSL to support MS SGC we have to permit a second client
11467 hello message after we have sent server done. In addition we have to
11468 reset the MAC if we do get this second client hello.
11471 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
11472 if a DER encoded private key is RSA or DSA traditional format. Changed
11473 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
11474 format DER encoded private key. Newer code should use PKCS#8 format which
11475 has the key type encoded in the ASN1 structure. Added DER private key
11476 support to pkcs8 application.
11479 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
11480 ciphersuites has been selected (as required by the SSL 3/TLS 1
11481 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
11482 is set, we interpret this as a request to violate the specification
11483 (the worst that can happen is a handshake failure, and 'correct'
11484 behaviour would result in a handshake failure anyway).
11487 *) In SSL_CTX_add_session, take into account that there might be multiple
11488 SSL_SESSION structures with the same session ID (e.g. when two threads
11489 concurrently obtain them from an external cache).
11490 The internal cache can handle only one SSL_SESSION with a given ID,
11491 so if there's a conflict, we now throw out the old one to achieve
11495 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
11496 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
11497 some routines that use cipher OIDs: some ciphers do not have OIDs
11498 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
11502 *) Simplify the trust setting structure and code. Now we just have
11503 two sequences of OIDs for trusted and rejected settings. These will
11504 typically have values the same as the extended key usage extension
11505 and any application specific purposes.
11507 The trust checking code now has a default behaviour: it will just
11508 check for an object with the same NID as the passed id. Functions can
11509 be provided to override either the default behaviour or the behaviour
11510 for a given id. SSL client, server and email already have functions
11511 in place for compatibility: they check the NID and also return "trusted"
11512 if the certificate is self signed.
11515 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
11516 traditional format into an EVP_PKEY structure.
11519 *) Add a password callback function PEM_cb() which either prompts for
11520 a password if usr_data is NULL or otherwise assumes it is a null
11521 terminated password. Allow passwords to be passed on command line
11522 environment or config files in a few more utilities.
11525 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
11526 keys. Add some short names for PKCS#8 PBE algorithms and allow them
11527 to be specified on the command line for the pkcs8 and pkcs12 utilities.
11528 Update documentation.
11531 *) Support for ASN1 "NULL" type. This could be handled before by using
11532 ASN1_TYPE but there wasn't any function that would try to read a NULL
11533 and produce an error if it couldn't. For compatibility we also have
11534 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
11535 don't allocate anything because they don't need to.
11538 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
11540 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
11542 *) Rebuild of the memory allocation routines used by OpenSSL code and
11543 possibly others as well. The purpose is to make an interface that
11544 provide hooks so anyone can build a separate set of allocation and
11545 deallocation routines to be used by OpenSSL, for example memory
11546 pool implementations, or something else, which was previously hard
11547 since Malloc(), Realloc() and Free() were defined as macros having
11548 the values malloc, realloc and free, respectively (except for Win32
11549 compilations). The same is provided for memory debugging code.
11550 OpenSSL already comes with functionality to find memory leaks, but
11551 this gives people a chance to debug other memory problems.
11553 With these changes, a new set of functions and macros have appeared:
11555 CRYPTO_set_mem_debug_functions() [F]
11556 CRYPTO_get_mem_debug_functions() [F]
11557 CRYPTO_dbg_set_options() [F]
11558 CRYPTO_dbg_get_options() [F]
11559 CRYPTO_malloc_debug_init() [M]
11561 The memory debug functions are NULL by default, unless the library
11562 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
11563 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
11564 gives the standard debugging functions that come with OpenSSL) or
11565 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
11566 provided by the library user) must be used. When the standard
11567 debugging functions are used, CRYPTO_dbg_set_options can be used to
11568 request additional information:
11569 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
11570 the CRYPTO_MDEBUG_xxx macro when compiling the library.
11572 Also, things like CRYPTO_set_mem_functions will always give the
11573 expected result (the new set of functions is used for allocation
11574 and deallocation) at all times, regardless of platform and compiler
11577 To finish it up, some functions that were never use in any other
11578 way than through macros have a new API and new semantic:
11580 CRYPTO_dbg_malloc()
11581 CRYPTO_dbg_realloc()
11584 All macros of value have retained their old syntax.
11585 [Richard Levitte and Bodo Moeller]
11587 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
11588 ordering of SMIMECapabilities wasn't in "strength order" and there
11589 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
11593 *) Some ASN1 types with illegal zero length encoding (INTEGER,
11594 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
11595 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
11597 *) Merge in my S/MIME library for OpenSSL. This provides a simple
11598 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
11599 functionality to handle multipart/signed properly) and a utility
11600 called 'smime' to call all this stuff. This is based on code I
11601 originally wrote for Celo who have kindly allowed it to be
11602 included in OpenSSL.
11605 *) Add variants des_set_key_checked and des_set_key_unchecked of
11606 des_set_key (aka des_key_sched). Global variable des_check_key
11607 decides which of these is called by des_set_key; this way
11608 des_check_key behaves as it always did, but applications and
11609 the library itself, which was buggy for des_check_key == 1,
11610 have a cleaner way to pick the version they need.
11613 *) New function PKCS12_newpass() which changes the password of a
11617 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
11618 dynamic mix. In both cases the ids can be used as an index into the
11619 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
11620 functions so they accept a list of the field values and the
11621 application doesn't need to directly manipulate the X509_TRUST
11625 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
11629 *) Modify the way the V3 extension code looks up extensions. This now
11630 works in a similar way to the object code: we have some "standard"
11631 extensions in a static table which is searched with OBJ_bsearch()
11632 and the application can add dynamic ones if needed. The file
11633 crypto/x509v3/ext_dat.h now has the info: this file needs to be
11634 updated whenever a new extension is added to the core code and kept
11635 in ext_nid order. There is a simple program 'tabtest.c' which checks
11636 this. New extensions are not added too often so this file can readily
11637 be maintained manually.
11639 There are two big advantages in doing things this way. The extensions
11640 can be looked up immediately and no longer need to be "added" using
11641 X509V3_add_standard_extensions(): this function now does nothing.
11642 [Side note: I get *lots* of email saying the extension code doesn't
11643 work because people forget to call this function]
11644 Also no dynamic allocation is done unless new extensions are added:
11645 so if we don't add custom extensions there is no need to call
11646 X509V3_EXT_cleanup().
11649 *) Modify enc utility's salting as follows: make salting the default. Add a
11650 magic header, so unsalted files fail gracefully instead of just decrypting
11651 to garbage. This is because not salting is a big security hole, so people
11652 should be discouraged from doing it.
11655 *) Fixes and enhancements to the 'x509' utility. It allowed a message
11656 digest to be passed on the command line but it only used this
11657 parameter when signing a certificate. Modified so all relevant
11658 operations are affected by the digest parameter including the
11659 -fingerprint and -x509toreq options. Also -x509toreq choked if a
11660 DSA key was used because it didn't fix the digest.
11663 *) Initial certificate chain verify code. Currently tests the untrusted
11664 certificates for consistency with the verify purpose (which is set
11665 when the X509_STORE_CTX structure is set up) and checks the pathlength.
11667 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
11668 this is because it will reject chains with invalid extensions whereas
11669 every previous version of OpenSSL and SSLeay made no checks at all.
11671 Trust code: checks the root CA for the relevant trust settings. Trust
11672 settings have an initial value consistent with the verify purpose: e.g.
11673 if the verify purpose is for SSL client use it expects the CA to be
11674 trusted for SSL client use. However the default value can be changed to
11675 permit custom trust settings: one example of this would be to only trust
11676 certificates from a specific "secure" set of CAs.
11678 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
11679 which should be used for version portability: especially since the
11680 verify structure is likely to change more often now.
11682 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
11683 to set them. If not set then assume SSL clients will verify SSL servers
11686 Two new options to the verify program: -untrusted allows a set of
11687 untrusted certificates to be passed in and -purpose which sets the
11688 intended purpose of the certificate. If a purpose is set then the
11689 new chain verify code is used to check extension consistency.
11692 *) Support for the authority information access extension.
11695 *) Modify RSA and DSA PEM read routines to transparently handle
11696 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
11697 public keys in a format compatible with certificate
11698 SubjectPublicKeyInfo structures. Unfortunately there were already
11699 functions called *_PublicKey_* which used various odd formats so
11700 these are retained for compatibility: however the DSA variants were
11701 never in a public release so they have been deleted. Changed dsa/rsa
11702 utilities to handle the new format: note no releases ever handled public
11703 keys so we should be OK.
11705 The primary motivation for this change is to avoid the same fiasco
11706 that dogs private keys: there are several incompatible private key
11707 formats some of which are standard and some OpenSSL specific and
11708 require various evil hacks to allow partial transparent handling and
11709 even then it doesn't work with DER formats. Given the option anything
11710 other than PKCS#8 should be dumped: but the other formats have to
11711 stay in the name of compatibility.
11713 With public keys and the benefit of hindsight one standard format
11714 is used which works with EVP_PKEY, RSA or DSA structures: though
11715 it clearly returns an error if you try to read the wrong kind of key.
11717 Added a -pubkey option to the 'x509' utility to output the public key.
11718 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
11719 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
11720 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
11721 that do the same as the EVP_PKEY_assign_*() except they up the
11722 reference count of the added key (they don't "swallow" the
11726 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
11727 CRLs would fail if the file contained no certificates or no CRLs:
11728 added a new function to read in both types and return the number
11729 read: this means that if none are read it will be an error. The
11730 DER versions of the certificate and CRL reader would always fail
11731 because it isn't possible to mix certificates and CRLs in DER format
11732 without choking one or the other routine. Changed this to just read
11733 a certificate: this is the best we can do. Also modified the code
11734 in apps/verify.c to take notice of return codes: it was previously
11735 attempting to read in certificates from NULL pointers and ignoring
11736 any errors: this is one reason why the cert and CRL reader seemed
11737 to work. It doesn't check return codes from the default certificate
11738 routines: these may well fail if the certificates aren't installed.
11741 *) Code to support otherName option in GeneralName.
11744 *) First update to verify code. Change the verify utility
11745 so it warns if it is passed a self signed certificate:
11746 for consistency with the normal behaviour. X509_verify
11747 has been modified to it will now verify a self signed
11748 certificate if *exactly* the same certificate appears
11749 in the store: it was previously impossible to trust a
11750 single self signed certificate. This means that:
11751 openssl verify ss.pem
11752 now gives a warning about a self signed certificate but
11753 openssl verify -CAfile ss.pem ss.pem
11757 *) For servers, store verify_result in SSL_SESSION data structure
11758 (and add it to external session representation).
11759 This is needed when client certificate verifications fails,
11760 but an application-provided verification callback (set by
11761 SSL_CTX_set_cert_verify_callback) allows accepting the session
11762 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
11763 but returns 1): When the session is reused, we have to set
11764 ssl->verify_result to the appropriate error code to avoid
11766 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
11768 *) Fix a bug in the new PKCS#7 code: it didn't consider the
11769 case in PKCS7_dataInit() where the signed PKCS7 structure
11770 didn't contain any existing data because it was being created.
11771 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
11773 *) Add a salt to the key derivation routines in enc.c. This
11774 forms the first 8 bytes of the encrypted file. Also add a
11775 -S option to allow a salt to be input on the command line.
11778 *) New function X509_cmp(). Oddly enough there wasn't a function
11779 to compare two certificates. We do this by working out the SHA1
11780 hash and comparing that. X509_cmp() will be needed by the trust
11784 *) SSL_get1_session() is like SSL_get_session(), but increments
11785 the reference count in the SSL_SESSION returned.
11786 [Geoff Thorpe <geoff@eu.c2.net>]
11788 *) Fix for 'req': it was adding a null to request attributes.
11789 Also change the X509_LOOKUP and X509_INFO code to handle
11790 certificate auxiliary information.
11793 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
11797 *) Add the possibility to add extra information to the memory leak
11798 detecting output, to form tracebacks, showing from where each
11799 allocation was originated: CRYPTO_push_info("constant string") adds
11800 the string plus current file name and line number to a per-thread
11801 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
11802 is like calling CYRPTO_pop_info() until the stack is empty.
11803 Also updated memory leak detection code to be multi-thread-safe.
11806 *) Add options -text and -noout to pkcs7 utility and delete the
11807 encryption options which never did anything. Update docs.
11810 *) Add options to some of the utilities to allow the pass phrase
11811 to be included on either the command line (not recommended on
11812 OSes like Unix) or read from the environment. Update the
11813 manpages and fix a few bugs.
11816 *) Add a few manpages for some of the openssl commands.
11819 *) Fix the -revoke option in ca. It was freeing up memory twice,
11820 leaking and not finding already revoked certificates.
11823 *) Extensive changes to support certificate auxiliary information.
11824 This involves the use of X509_CERT_AUX structure and X509_AUX
11825 functions. An X509_AUX function such as PEM_read_X509_AUX()
11826 can still read in a certificate file in the usual way but it
11827 will also read in any additional "auxiliary information". By
11828 doing things this way a fair degree of compatibility can be
11829 retained: existing certificates can have this information added
11830 using the new 'x509' options.
11832 Current auxiliary information includes an "alias" and some trust
11833 settings. The trust settings will ultimately be used in enhanced
11834 certificate chain verification routines: currently a certificate
11835 can only be trusted if it is self signed and then it is trusted
11839 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
11840 The problem was that one of the replacement routines had not been working
11841 since SSLeay releases. For now the offending routine has been replaced
11842 with non-optimised assembler. Even so, this now gives around 95%
11843 performance improvement for 1024 bit RSA signs.
11846 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
11847 handling. Most clients have the effective key size in bits equal to
11848 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
11849 A few however don't do this and instead use the size of the decrypted key
11850 to determine the RC2 key length and the AlgorithmIdentifier to determine
11851 the effective key length. In this case the effective key length can still
11852 be 40 bits but the key length can be 168 bits for example. This is fixed
11853 by manually forcing an RC2 key into the EVP_PKEY structure because the
11854 EVP code can't currently handle unusual RC2 key sizes: it always assumes
11855 the key length and effective key length are equal.
11858 *) Add a bunch of functions that should simplify the creation of
11859 X509_NAME structures. Now you should be able to do:
11860 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
11861 and have it automatically work out the correct field type and fill in
11862 the structures. The more adventurous can try:
11863 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
11864 and it will (hopefully) work out the correct multibyte encoding.
11867 *) Change the 'req' utility to use the new field handling and multibyte
11868 copy routines. Before the DN field creation was handled in an ad hoc
11869 way in req, ca, and x509 which was rather broken and didn't support
11870 BMPStrings or UTF8Strings. Since some software doesn't implement
11871 BMPStrings or UTF8Strings yet, they can be enabled using the config file
11872 using the dirstring_type option. See the new comment in the default
11873 openssl.cnf for more info.
11876 *) Make crypto/rand/md_rand.c more robust:
11877 - Assure unique random numbers after fork().
11878 - Make sure that concurrent threads access the global counter and
11879 md serializably so that we never lose entropy in them
11880 or use exactly the same state in multiple threads.
11881 Access to the large state is not always serializable because
11882 the additional locking could be a performance killer, and
11883 md should be large enough anyway.
11886 *) New file apps/app_rand.c with commonly needed functionality
11887 for handling the random seed file.
11889 Use the random seed file in some applications that previously did not:
11891 dsaparam -genkey (which also ignored its '-rand' option),
11894 x509 (when signing).
11895 Except on systems with /dev/urandom, it is crucial to have a random
11896 seed file at least for key creation, DSA signing, and for DH exchanges;
11897 for RSA signatures we could do without one.
11899 gendh and gendsa (unlike genrsa) used to read only the first byte
11900 of each file listed in the '-rand' option. The function as previously
11901 found in genrsa is now in app_rand.c and is used by all programs
11902 that support '-rand'.
11905 *) In RAND_write_file, use mode 0600 for creating files;
11906 don't just chmod when it may be too late.
11909 *) Report an error from X509_STORE_load_locations
11910 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
11913 *) New function ASN1_mbstring_copy() this copies a string in either
11914 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
11915 into an ASN1_STRING type. A mask of permissible types is passed
11916 and it chooses the "minimal" type to use or an error if not type
11920 *) Add function equivalents to the various macros in asn1.h. The old
11921 macros are retained with an M_ prefix. Code inside the library can
11922 use the M_ macros. External code (including the openssl utility)
11923 should *NOT* in order to be "shared library friendly".
11926 *) Add various functions that can check a certificate's extensions
11927 to see if it usable for various purposes such as SSL client,
11928 server or S/MIME and CAs of these types. This is currently
11929 VERY EXPERIMENTAL but will ultimately be used for certificate chain
11930 verification. Also added a -purpose flag to x509 utility to
11931 print out all the purposes.
11934 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
11938 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
11939 for, obtain and decode and extension and obtain its critical flag.
11940 This allows all the necessary extension code to be handled in a
11941 single function call.
11944 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
11945 platforms. See crypto/rc4/rc4_enc.c for further details.
11948 *) New -noout option to asn1parse. This causes no output to be produced
11949 its main use is when combined with -strparse and -out to extract data
11950 from a file (which may not be in ASN.1 format).
11953 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
11954 when producing the local key id.
11955 [Richard Levitte <levitte@stacken.kth.se>]
11957 *) New option -dhparam in s_server. This allows a DH parameter file to be
11958 stated explicitly. If it is not stated then it tries the first server
11959 certificate file. The previous behaviour hard coded the filename
11963 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
11964 a public key to be input or output. For example:
11965 openssl rsa -in key.pem -pubout -out pubkey.pem
11966 Also added necessary DSA public key functions to handle this.
11969 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
11970 in the message. This was handled by allowing
11971 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
11972 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
11974 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
11975 to the end of the strings whereas this didn't. This would cause problems
11976 if strings read with d2i_ASN1_bytes() were later modified.
11977 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
11979 *) Fix for base64 decode bug. When a base64 bio reads only one line of
11980 data and it contains EOF it will end up returning an error. This is
11981 caused by input 46 bytes long. The cause is due to the way base64
11982 BIOs find the start of base64 encoded data. They do this by trying a
11983 trial decode on each line until they find one that works. When they
11984 do a flag is set and it starts again knowing it can pass all the
11985 data directly through the decoder. Unfortunately it doesn't reset
11986 the context it uses. This means that if EOF is reached an attempt
11987 is made to pass two EOFs through the context and this causes the
11988 resulting error. This can also cause other problems as well. As is
11989 usual with these problems it takes *ages* to find and the fix is
11990 trivial: move one line.
11991 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
11993 *) Ugly workaround to get s_client and s_server working under Windows. The
11994 old code wouldn't work because it needed to select() on sockets and the
11995 tty (for keypresses and to see if data could be written). Win32 only
11996 supports select() on sockets so we select() with a 1s timeout on the
11997 sockets and then see if any characters are waiting to be read, if none
11998 are present then we retry, we also assume we can always write data to
11999 the tty. This isn't nice because the code then blocks until we've
12000 received a complete line of data and it is effectively polling the
12001 keyboard at 1s intervals: however it's quite a bit better than not
12002 working at all :-) A dedicated Windows application might handle this
12003 with an event loop for example.
12006 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
12007 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
12008 will be called when RSA_sign() and RSA_verify() are used. This is useful
12009 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
12010 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
12011 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
12012 This necessitated the support of an extra signature type NID_md5_sha1
12013 for SSL signatures and modifications to the SSL library to use it instead
12014 of calling RSA_public_decrypt() and RSA_private_encrypt().
12017 *) Add new -verify -CAfile and -CApath options to the crl program, these
12018 will lookup a CRL issuers certificate and verify the signature in a
12019 similar way to the verify program. Tidy up the crl program so it
12020 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
12021 less strict. It will now permit CRL extensions even if it is not
12022 a V2 CRL: this will allow it to tolerate some broken CRLs.
12025 *) Initialize all non-automatic variables each time one of the openssl
12026 sub-programs is started (this is necessary as they may be started
12027 multiple times from the "OpenSSL>" prompt).
12028 [Lennart Bang, Bodo Moeller]
12030 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
12031 removing all other RSA functionality (this is what NO_RSA does). This
12032 is so (for example) those in the US can disable those operations covered
12033 by the RSA patent while allowing storage and parsing of RSA keys and RSA
12037 *) Non-copying interface to BIO pairs.
12038 (still largely untested)
12041 *) New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
12042 ASCII string. This was handled independently in various places before.
12045 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
12046 UTF8 strings a character at a time.
12049 *) Use client_version from client hello to select the protocol
12050 (s23_srvr.c) and for RSA client key exchange verification
12051 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
12054 *) Add various utility functions to handle SPKACs, these were previously
12055 handled by poking round in the structure internals. Added new function
12056 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
12057 print, verify and generate SPKACs. Based on an original idea from
12058 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
12061 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
12064 *) Allow the config file extension section to be overwritten on the
12065 command line. Based on an original idea from Massimiliano Pala
12066 <madwolf@comune.modena.it>. The new option is called -extensions
12067 and can be applied to ca, req and x509. Also -reqexts to override
12068 the request extensions in req and -crlexts to override the crl extensions
12072 *) Add new feature to the SPKAC handling in ca. Now you can include
12073 the same field multiple times by preceding it by "XXXX." for example:
12076 this is the same syntax as used in the req config file.
12079 *) Allow certificate extensions to be added to certificate requests. These
12080 are specified in a 'req_extensions' option of the req section of the
12081 config file. They can be printed out with the -text option to req but
12082 are otherwise ignored at present.
12085 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
12086 data read consists of only the final block it would not decrypted because
12087 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
12088 A misplaced 'break' also meant the decrypted final block might not be
12089 copied until the next read.
12092 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
12093 a few extra parameters to the DH structure: these will be useful if
12094 for example we want the value of 'q' or implement X9.42 DH.
12097 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
12098 provides hooks that allow the default DSA functions or functions on a
12099 "per key" basis to be replaced. This allows hardware acceleration and
12100 hardware key storage to be handled without major modification to the
12101 library. Also added low level modexp hooks and CRYPTO_EX structure and
12102 associated functions.
12105 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
12106 as "read only": it can't be written to and the buffer it points to will
12107 not be freed. Reading from a read only BIO is much more efficient than
12108 a normal memory BIO. This was added because there are several times when
12109 an area of memory needs to be read from a BIO. The previous method was
12110 to create a memory BIO and write the data to it, this results in two
12111 copies of the data and an O(n^2) reading algorithm. There is a new
12112 function BIO_new_mem_buf() which creates a read only memory BIO from
12113 an area of memory. Also modified the PKCS#7 routines to use read only
12117 *) Bugfix: ssl23_get_client_hello did not work properly when called in
12118 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
12119 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
12120 but a retry condition occurred while trying to read the rest.
12123 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
12124 NID_pkcs7_encrypted by default: this was wrong since this should almost
12125 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
12126 the encrypted data type: this is a more sensible place to put it and it
12127 allows the PKCS#12 code to be tidied up that duplicated this
12131 *) Changed obj_dat.pl script so it takes its input and output files on
12132 the command line. This should avoid shell escape redirection problems
12136 *) Initial support for certificate extension requests, these are included
12137 in things like Xenroll certificate requests. Included functions to allow
12138 extensions to be obtained and added.
12141 *) -crlf option to s_client and s_server for sending newlines as
12142 CRLF (as required by many protocols).
12145 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
12147 *) Install libRSAglue.a when OpenSSL is built with RSAref.
12148 [Ralf S. Engelschall]
12150 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
12151 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
12153 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
12157 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
12158 DH parameters/keys (q is lost during that conversion, but the resulting
12159 DH parameters contain its length).
12161 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
12162 much faster than DH_generate_parameters (which creates parameters
12163 where p = 2*q + 1), and also the smaller q makes DH computations
12164 much more efficient (160-bit exponentiation instead of 1024-bit
12165 exponentiation); so this provides a convenient way to support DHE
12166 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
12167 utter importance to use
12168 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12170 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12171 when such DH parameters are used, because otherwise small subgroup
12172 attacks may become possible!
12175 *) Avoid memory leak in i2d_DHparams.
12178 *) Allow the -k option to be used more than once in the enc program:
12179 this allows the same encrypted message to be read by multiple recipients.
12182 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
12183 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
12184 it will always use the numerical form of the OID, even if it has a short
12188 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
12189 method only got called if p,q,dmp1,dmq1,iqmp components were present,
12190 otherwise bn_mod_exp was called. In the case of hardware keys for example
12191 no private key components need be present and it might store extra data
12192 in the RSA structure, which cannot be accessed from bn_mod_exp.
12193 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
12194 private key operations.
12197 *) Added support for SPARC Linux.
12200 *) pem_password_cb function type incompatibly changed from
12201 typedef int pem_password_cb(char *buf, int size, int rwflag);
12203 ....(char *buf, int size, int rwflag, void *userdata);
12204 so that applications can pass data to their callbacks:
12205 The PEM[_ASN1]_{read,write}... functions and macros now take an
12206 additional void * argument, which is just handed through whenever
12207 the password callback is called.
12208 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
12210 New function SSL_CTX_set_default_passwd_cb_userdata.
12212 Compatibility note: As many C implementations push function arguments
12213 onto the stack in reverse order, the new library version is likely to
12214 interoperate with programs that have been compiled with the old
12215 pem_password_cb definition (PEM_whatever takes some data that
12216 happens to be on the stack as its last argument, and the callback
12217 just ignores this garbage); but there is no guarantee whatsoever that
12220 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
12221 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
12222 problems not only on Windows, but also on some Unix platforms.
12223 To avoid problematic command lines, these definitions are now in an
12224 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
12225 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
12228 *) MIPS III/IV assembler module is reimplemented.
12231 *) More DES library cleanups: remove references to srand/rand and
12232 delete an unused file.
12235 *) Add support for the free Netwide assembler (NASM) under Win32,
12236 since not many people have MASM (ml) and it can be hard to obtain.
12237 This is currently experimental but it seems to work OK and pass all
12238 the tests. Check out INSTALL.W32 for info.
12241 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
12242 without temporary keys kept an extra copy of the server key,
12243 and connections with temporary keys did not free everything in case
12247 *) New function RSA_check_key and new openssl rsa option -check
12248 for verifying the consistency of RSA keys.
12249 [Ulf Moeller, Bodo Moeller]
12251 *) Various changes to make Win32 compile work:
12252 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
12253 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
12254 comparison" warnings.
12255 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
12258 *) Add a debugging option to PKCS#5 v2 key generation function: when
12259 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
12260 derived keys are printed to stderr.
12263 *) Copy the flags in ASN1_STRING_dup().
12264 [Roman E. Pavlov <pre@mo.msk.ru>]
12266 *) The x509 application mishandled signing requests containing DSA
12267 keys when the signing key was also DSA and the parameters didn't match.
12269 It was supposed to omit the parameters when they matched the signing key:
12270 the verifying software was then supposed to automatically use the CA's
12271 parameters if they were absent from the end user certificate.
12273 Omitting parameters is no longer recommended. The test was also
12274 the wrong way round! This was probably due to unusual behaviour in
12275 EVP_cmp_parameters() which returns 1 if the parameters match.
12276 This meant that parameters were omitted when they *didn't* match and
12277 the certificate was useless. Certificates signed with 'ca' didn't have
12279 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
12281 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
12282 The interface is as follows:
12283 Applications can use
12284 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
12285 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
12286 "off" is now the default.
12287 The library internally uses
12288 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
12289 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
12290 to disable memory-checking temporarily.
12292 Some inconsistent states that previously were possible (and were
12293 even the default) are now avoided.
12295 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
12296 with each memory chunk allocated; this is occasionally more helpful
12297 than just having a counter.
12299 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
12301 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
12305 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
12306 which largely parallels "options", but is for changing API behaviour,
12307 whereas "options" are about protocol behaviour.
12308 Initial "mode" flags are:
12310 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
12311 a single record has been written.
12312 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
12313 retries use the same buffer location.
12314 (But all of the contents must be
12318 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
12321 *) Fix problems with no-hmac etc.
12322 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
12324 *) New functions RSA_get_default_method(), RSA_set_method() and
12325 RSA_get_method(). These allows replacement of RSA_METHODs without having
12326 to mess around with the internals of an RSA structure.
12329 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
12330 Also really enable memory leak checks in openssl.c and in some
12332 [Chad C. Mulligan, Bodo Moeller]
12334 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
12335 up the length of negative integers. This has now been simplified to just
12336 store the length when it is first determined and use it later, rather
12337 than trying to keep track of where data is copied and updating it to
12339 [Steve Henson, reported by Brien Wheeler
12340 <bwheeler@authentica-security.com>]
12342 *) Add a new function PKCS7_signatureVerify. This allows the verification
12343 of a PKCS#7 signature but with the signing certificate passed to the
12344 function itself. This contrasts with PKCS7_dataVerify which assumes the
12345 certificate is present in the PKCS#7 structure. This isn't always the
12346 case: certificates can be omitted from a PKCS#7 structure and be
12347 distributed by "out of band" means (such as a certificate database).
12350 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
12351 function prototypes in pem.h, also change util/mkdef.pl to add the
12352 necessary function names.
12355 *) mk1mf.pl (used by Windows builds) did not properly read the
12356 options set by Configure in the top level Makefile, and Configure
12357 was not even able to write more than one option correctly.
12358 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
12361 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
12362 file to be loaded from a BIO or FILE pointer. The BIO version will
12363 for example allow memory BIOs to contain config info.
12366 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
12367 Whoever hopes to achieve shared-library compatibility across versions
12368 must use this, not the compile-time macro.
12369 (Exercise 0.9.4: Which is the minimum library version required by
12371 Note: All this applies only to multi-threaded programs, others don't
12375 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
12376 through a BIO pair triggered the default case, i.e.
12377 SSLerr(...,SSL_R_UNKNOWN_STATE).
12380 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
12381 can use the SSL library even if none of the specific BIOs is
12385 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
12386 for the encoded length.
12387 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
12389 *) Add initial documentation of the X509V3 functions.
12392 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
12393 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
12394 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
12395 secure PKCS#8 private key format with a high iteration count.
12398 *) Fix determination of Perl interpreter: A perl or perl5
12399 _directory_ in $PATH was also accepted as the interpreter.
12400 [Ralf S. Engelschall]
12402 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
12403 wrong with it but it was very old and did things like calling
12404 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
12405 unusual formatting.
12408 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
12409 to use the new extension code.
12412 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
12413 with macros. This should make it easier to change their form, add extra
12414 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
12418 *) Add to configuration table a new entry that can specify an alternative
12419 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
12420 according to Mark Crispin <MRC@Panda.COM>.
12424 *) DES CBC did not update the IV. Weird.
12427 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
12428 Changing the behaviour of the former might break existing programs --
12429 where IV updating is needed, des_ncbc_encrypt can be used.
12432 *) When bntest is run from "make test" it drives bc to check its
12433 calculations, as well as internally checking them. If an internal check
12434 fails, it needs to cause bc to give a non-zero result or make test carries
12435 on without noticing the failure. Fixed.
12438 *) DES library cleanups.
12441 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
12442 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
12443 ciphers. NOTE: although the key derivation function has been verified
12444 against some published test vectors it has not been extensively tested
12445 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
12449 *) Instead of "mkdir -p", which is not fully portable, use new
12450 Perl script "util/mkdir-p.pl".
12453 *) Rewrite the way password based encryption (PBE) is handled. It used to
12454 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
12455 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
12456 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
12457 the 'parameter' field of the AlgorithmIdentifier is passed to the
12458 underlying key generation function so it must do its own ASN1 parsing.
12459 This has also changed the EVP_PBE_CipherInit() function which now has a
12460 'parameter' argument instead of literal salt and iteration count values
12461 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
12464 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
12465 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
12466 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
12467 KEY" because this clashed with PKCS#8 unencrypted string. Since this
12468 value was just used as a "magic string" and not used directly its
12469 value doesn't matter.
12472 *) Introduce some semblance of const correctness to BN. Shame C doesn't
12476 *) "linux-sparc64" configuration (ultrapenguin).
12477 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
12478 "linux-sparc" configuration.
12479 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
12481 *) config now generates no-xxx options for missing ciphers.
12484 *) Support the EBCDIC character set (work in progress).
12485 File ebcdic.c not yet included because it has a different license.
12486 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12488 *) Support BS2000/OSD-POSIX.
12489 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12491 *) Make callbacks for key generation use void * instead of char *.
12494 *) Make S/MIME samples compile (not yet tested).
12497 *) Additional typesafe stacks.
12500 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
12504 Changes between 0.9.3 and 0.9.3a [29 May 1999]
12506 *) New configuration variant "sco5-gcc".
12508 *) Updated some demos.
12509 [Sean O Riordain, Wade Scholine]
12511 *) Add missing BIO_free at exit of pkcs12 application.
12514 *) Fix memory leak in conf.c.
12517 *) Updates for Win32 to assembler version of MD5.
12520 *) Set #! path to perl in apps/der_chop to where we found it
12521 instead of using a fixed path.
12524 *) SHA library changes for irix64-mips4-cc.
12527 *) Improvements for VMS support.
12531 Changes between 0.9.2b and 0.9.3 [24 May 1999]
12533 *) Bignum library bug fix. IRIX 6 passes "make test" now!
12534 This also avoids the problems with SC4.2 and unpatched SC5.
12535 [Andy Polyakov <appro@fy.chalmers.se>]
12537 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
12538 These are required because of the typesafe stack would otherwise break
12539 existing code. If old code used a structure member which used to be STACK
12540 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
12541 sk_num or sk_value it would produce an error because the num, data members
12542 are not present in STACK_OF. Now it just produces a warning. sk_set
12543 replaces the old method of assigning a value to sk_value
12544 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
12545 that does this will no longer work (and should use sk_set instead) but
12546 this could be regarded as a "questionable" behaviour anyway.
12549 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
12550 correctly handle encrypted S/MIME data.
12553 *) Change type of various DES function arguments from des_cblock
12554 (which means, in function argument declarations, pointer to char)
12555 to des_cblock * (meaning pointer to array with 8 char elements),
12556 which allows the compiler to do more typechecking; it was like
12557 that back in SSLeay, but with lots of ugly casts.
12559 Introduce new type const_des_cblock.
12562 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
12563 problems: find RecipientInfo structure that matches recipient certificate
12564 and initialise the ASN1 structures properly based on passed cipher.
12567 *) Belatedly make the BN tests actually check the results.
12570 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
12571 to and from BNs: it was completely broken. New compilation option
12572 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
12573 key elements as negative integers.
12576 *) Reorganize and speed up MD5.
12577 [Andy Polyakov <appro@fy.chalmers.se>]
12580 [Richard Levitte <richard@levitte.org>]
12582 *) New option -out to asn1parse to allow the parsed structure to be
12583 output to a file. This is most useful when combined with the -strparse
12584 option to examine the output of things like OCTET STRINGS.
12587 *) Make SSL library a little more fool-proof by not requiring any longer
12588 that SSL_set_{accept,connect}_state be called before
12589 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
12590 in many applications because usually everything *appeared* to work as
12591 intended anyway -- now it really works as intended).
12594 *) Move openssl.cnf out of lib/.
12597 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
12598 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
12599 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
12600 [Ralf S. Engelschall]
12602 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
12603 handle PKCS#7 enveloped data properly.
12604 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
12606 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
12607 copying pointers. The cert_st handling is changed by this in
12608 various ways (and thus what used to be known as ctx->default_cert
12609 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
12610 any longer when s->cert does not give us what we need).
12611 ssl_cert_instantiate becomes obsolete by this change.
12612 As soon as we've got the new code right (possibly it already is?),
12613 we have solved a couple of bugs of the earlier code where s->cert
12614 was used as if it could not have been shared with other SSL structures.
12616 Note that using the SSL API in certain dirty ways now will result
12617 in different behaviour than observed with earlier library versions:
12618 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
12619 does not influence s as it used to.
12621 In order to clean up things more thoroughly, inside SSL_SESSION
12622 we don't use CERT any longer, but a new structure SESS_CERT
12623 that holds per-session data (if available); currently, this is
12624 the peer's certificate chain and, for clients, the server's certificate
12625 and temporary key. CERT holds only those values that can have
12626 meaningful defaults in an SSL_CTX.
12629 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
12630 from the internal representation. Various PKCS#7 fixes: remove some
12631 evil casts and set the enc_dig_alg field properly based on the signing
12635 *) Allow PKCS#12 password to be set from the command line or the
12636 environment. Let 'ca' get its config file name from the environment
12637 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
12641 *) Allow certificate policies extension to use an IA5STRING for the
12642 organization field. This is contrary to the PKIX definition but
12643 VeriSign uses it and IE5 only recognises this form. Document 'x509'
12647 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
12648 without disallowing inline assembler and the like for non-pedantic builds.
12651 *) Support Borland C++ builder.
12652 [Janez Jere <jj@void.si>, modified by Ulf Möller]
12654 *) Support Mingw32.
12657 *) SHA-1 cleanups and performance enhancements.
12658 [Andy Polyakov <appro@fy.chalmers.se>]
12660 *) Sparc v8plus assembler for the bignum library.
12661 [Andy Polyakov <appro@fy.chalmers.se>]
12663 *) Accept any -xxx and +xxx compiler options in Configure.
12666 *) Update HPUX configuration.
12669 *) Add missing sk_<type>_unshift() function to safestack.h
12670 [Ralf S. Engelschall]
12672 *) New function SSL_CTX_use_certificate_chain_file that sets the
12673 "extra_cert"s in addition to the certificate. (This makes sense
12674 only for "PEM" format files, as chains as a whole are not
12678 *) Support verify_depth from the SSL API.
12679 x509_vfy.c had what can be considered an off-by-one-error:
12680 Its depth (which was not part of the external interface)
12681 was actually counting the number of certificates in a chain;
12682 now it really counts the depth.
12685 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
12686 instead of X509err, which often resulted in confusing error
12687 messages since the error codes are not globally unique
12688 (e.g. an alleged error in ssl3_accept when a certificate
12689 didn't match the private key).
12691 *) New function SSL_CTX_set_session_id_context that allows to set a default
12692 value (so that you don't need SSL_set_session_id_context for each
12693 connection using the SSL_CTX).
12696 *) OAEP decoding bug fix.
12699 *) Support INSTALL_PREFIX for package builders, as proposed by
12703 *) New Configure options "threads" and "no-threads". For systems
12704 where the proper compiler options are known (currently Solaris
12705 and Linux), "threads" is the default.
12708 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
12711 *) Install various scripts to $(OPENSSLDIR)/misc, not to
12712 $(INSTALLTOP)/bin -- they shouldn't clutter directories
12713 such as /usr/local/bin.
12716 *) "make linux-shared" to build shared libraries.
12717 [Niels Poppe <niels@netbox.org>]
12719 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
12722 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
12723 extension adding in x509 utility.
12726 *) Remove NOPROTO sections and error code comments.
12729 *) Partial rewrite of the DEF file generator to now parse the ANSI
12733 *) New Configure options --prefix=DIR and --openssldir=DIR.
12736 *) Complete rewrite of the error code script(s). It is all now handled
12737 by one script at the top level which handles error code gathering,
12738 header rewriting and C source file generation. It should be much better
12739 than the old method: it now uses a modified version of Ulf's parser to
12740 read the ANSI prototypes in all header files (thus the old K&R definitions
12741 aren't needed for error creation any more) and do a better job of
12742 translating function codes into names. The old 'ASN1 error code imbedded
12743 in a comment' is no longer necessary and it doesn't use .err files which
12744 have now been deleted. Also the error code call doesn't have to appear all
12745 on one line (which resulted in some large lines...).
12748 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
12751 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
12752 0 (which usually indicates a closed connection), but continue reading.
12755 *) Fix some race conditions.
12758 *) Add support for CRL distribution points extension. Add Certificate
12759 Policies and CRL distribution points documentation.
12762 *) Move the autogenerated header file parts to crypto/opensslconf.h.
12765 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
12766 8 of keying material. Merlin has also confirmed interop with this fix
12767 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
12768 [Merlin Hughes <merlin@baltimore.ie>]
12770 *) Fix lots of warnings.
12771 [Richard Levitte <levitte@stacken.kth.se>]
12773 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
12774 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
12775 [Richard Levitte <levitte@stacken.kth.se>]
12777 *) Fix problems with sizeof(long) == 8.
12778 [Andy Polyakov <appro@fy.chalmers.se>]
12780 *) Change functions to ANSI C.
12783 *) Fix typos in error codes.
12784 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
12786 *) Remove defunct assembler files from Configure.
12789 *) SPARC v8 assembler BIGNUM implementation.
12790 [Andy Polyakov <appro@fy.chalmers.se>]
12792 *) Support for Certificate Policies extension: both print and set.
12793 Various additions to support the r2i method this uses.
12796 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
12797 return a const string when you are expecting an allocated buffer.
12800 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
12801 types DirectoryString and DisplayText.
12804 *) Add code to allow r2i extensions to access the configuration database,
12805 add an LHASH database driver and add several ctx helper functions.
12808 *) Fix an evil bug in bn_expand2() which caused various BN functions to
12809 fail when they extended the size of a BIGNUM.
12812 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
12813 support typesafe stack.
12816 *) Fix typo in SSL_[gs]et_options().
12817 [Nils Frostberg <nils@medcom.se>]
12819 *) Delete various functions and files that belonged to the (now obsolete)
12820 old X509V3 handling code.
12823 *) New Configure option "rsaref".
12826 *) Don't auto-generate pem.h.
12829 *) Introduce type-safe ASN.1 SETs.
12832 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
12833 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
12835 *) Introduce type-safe STACKs. This will almost certainly break lots of code
12836 that links with OpenSSL (well at least cause lots of warnings), but fear
12837 not: the conversion is trivial, and it eliminates loads of evil casts. A
12838 few STACKed things have been converted already. Feel free to convert more.
12839 In the fullness of time, I'll do away with the STACK type altogether.
12842 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
12843 specified in <certfile> by updating the entry in the index.txt file.
12844 This way one no longer has to edit the index.txt file manually for
12845 revoking a certificate. The -revoke option does the gory details now.
12846 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
12848 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
12849 `-text' option at all and this way the `-noout -text' combination was
12850 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
12851 [Ralf S. Engelschall]
12853 *) Make sure a corresponding plain text error message exists for the
12854 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
12855 verify callback function determined that a certificate was revoked.
12856 [Ralf S. Engelschall]
12858 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
12859 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
12860 all available ciphers including rc5, which was forgotten until now.
12861 In order to let the testing shell script know which algorithms
12862 are available, a new (up to now undocumented) command
12863 "openssl list-cipher-commands" is used.
12866 *) Bugfix: s_client occasionally would sleep in select() when
12867 it should have checked SSL_pending() first.
12870 *) New functions DSA_do_sign and DSA_do_verify to provide access to
12871 the raw DSA values prior to ASN.1 encoding.
12874 *) Tweaks to Configure
12875 [Niels Poppe <niels@netbox.org>]
12877 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
12881 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
12884 *) New config option to avoid instructions that are illegal on the 80386.
12885 The default code is faster, but requires at least a 486.
12888 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
12889 SSL2_SERVER_VERSION (not used at all) macros, which are now the
12890 same as SSL2_VERSION anyway.
12893 *) New "-showcerts" option for s_client.
12896 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
12897 application. Various cleanups and fixes.
12900 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
12901 modify error routines to work internally. Add error codes and PBE init
12902 to library startup routines.
12905 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
12906 packing functions to asn1 and evp. Changed function names and error
12907 codes along the way.
12910 *) PKCS12 integration: and so it begins... First of several patches to
12911 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
12912 objects to objects.h
12915 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
12916 and display support for Thawte strong extranet extension.
12919 *) Add LinuxPPC support.
12920 [Jeff Dubrule <igor@pobox.org>]
12922 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
12923 bn_div_words in alpha.s.
12924 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
12926 *) Make sure the RSA OAEP test is skipped under -DRSAref because
12927 OAEP isn't supported when OpenSSL is built with RSAref.
12928 [Ulf Moeller <ulf@fitug.de>]
12930 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
12931 so they no longer are missing under -DNOPROTO.
12932 [Soren S. Jorvang <soren@t.dk>]
12935 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
12937 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
12938 doesn't work when the session is reused. Coming soon!
12941 *) Fix a security hole, that allows sessions to be reused in the wrong
12942 context thus bypassing client cert protection! All software that uses
12943 client certs and session caches in multiple contexts NEEDS PATCHING to
12944 allow session reuse! A fuller solution is in the works.
12945 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
12947 *) Some more source tree cleanups (removed obsolete files
12948 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
12949 permission on "config" script to be executable) and a fix for the INSTALL
12951 [Ulf Moeller <ulf@fitug.de>]
12953 *) Remove some legacy and erroneous uses of malloc, free instead of
12955 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
12957 *) Make rsa_oaep_test return non-zero on error.
12958 [Ulf Moeller <ulf@fitug.de>]
12960 *) Add support for native Solaris shared libraries. Configure
12961 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
12962 if someone would make that last step automatic.
12963 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
12965 *) ctx_size was not built with the right compiler during "make links". Fixed.
12968 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
12969 except NULL ciphers". This means the default cipher list will no longer
12970 enable NULL ciphers. They need to be specifically enabled e.g. with
12971 the string "DEFAULT:eNULL".
12974 *) Fix to RSA private encryption routines: if p < q then it would
12975 occasionally produce an invalid result. This will only happen with
12976 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
12979 *) Be less restrictive and allow also `perl util/perlpath.pl
12980 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
12981 because this way one can also use an interpreter named `perl5' (which is
12982 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
12983 installed as `perl').
12984 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12986 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
12987 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12989 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
12990 advapi32.lib to Win32 build and change the pem test comparison
12991 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
12992 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
12993 and crypto/des/ede_cbcm_enc.c.
12996 *) DES quad checksum was broken on big-endian architectures. Fixed.
12999 *) Comment out two functions in bio.h that aren't implemented. Fix up the
13000 Win32 test batch file so it (might) work again. The Win32 test batch file
13001 is horrible: I feel ill....
13004 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
13005 in e_os.h. Audit of header files to check ANSI and non ANSI
13006 sections: 10 functions were absent from non ANSI section and not exported
13007 from Windows DLLs. Fixed up libeay.num for new functions.
13010 *) Make `openssl version' output lines consistent.
13011 [Ralf S. Engelschall]
13013 *) Fix Win32 symbol export lists for BIO functions: Added
13014 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
13015 to ms/libeay{16,32}.def.
13016 [Ralf S. Engelschall]
13018 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
13019 fine under Unix and passes some trivial tests I've now added. But the
13020 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
13021 added to make sure no one expects that this stuff really works in the
13022 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
13023 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
13025 [Ralf S. Engelschall]
13027 *) Fix the generation of two part addresses in perl.
13028 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
13030 *) Add config entry for Linux on MIPS.
13031 [John Tobey <jtobey@channel1.com>]
13033 *) Make links whenever Configure is run, unless we are on Windoze.
13036 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
13037 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
13041 *) Add a useful kludge to allow package maintainers to specify compiler and
13042 other platforms details on the command line without having to patch the
13043 Configure script everytime: One now can use ``perl Configure
13044 <id>:<details>'', i.e. platform ids are allowed to have details appended
13045 to them (separated by colons). This is treated as there would be a static
13046 pre-configured entry in Configure's %table under key <id> with value
13047 <details> and ``perl Configure <id>'' is called. So, when you want to
13048 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
13049 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
13050 now, which overrides the FreeBSD-elf entry on-the-fly.
13051 [Ralf S. Engelschall]
13053 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
13056 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
13057 on the `perl Configure ...' command line. This way one can compile
13058 OpenSSL libraries with Position Independent Code (PIC) which is needed
13059 for linking it into DSOs.
13060 [Ralf S. Engelschall]
13062 *) Remarkably, export ciphers were totally broken and no-one had noticed!
13066 *) Cleaned up the LICENSE document: The official contact for any license
13067 questions now is the OpenSSL core team under openssl-core@openssl.org.
13068 And add a paragraph about the dual-license situation to make sure people
13069 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
13070 to the OpenSSL toolkit.
13071 [Ralf S. Engelschall]
13073 *) General source tree makefile cleanups: Made `making xxx in yyy...'
13074 display consistent in the source tree and replaced `/bin/rm' by `rm'.
13075 Additionally cleaned up the `make links' target: Remove unnecessary
13076 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
13077 to speed processing and no longer clutter the display with confusing
13078 stuff. Instead only the actually done links are displayed.
13079 [Ralf S. Engelschall]
13081 *) Permit null encryption ciphersuites, used for authentication only. It used
13082 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
13083 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
13087 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
13088 signed attributes when verifying signatures (this would break them),
13089 the detached data encoding was wrong and public keys obtained using
13090 X509_get_pubkey() weren't freed.
13093 *) Add text documentation for the BUFFER functions. Also added a work around
13094 to a Win95 console bug. This was triggered by the password read stuff: the
13095 last character typed gets carried over to the next fread(). If you were
13096 generating a new cert request using 'req' for example then the last
13097 character of the passphrase would be CR which would then enter the first
13101 *) Added the new `Includes OpenSSL Cryptography Software' button as
13102 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
13103 button and can be used by applications based on OpenSSL to show the
13104 relationship to the OpenSSL project.
13105 [Ralf S. Engelschall]
13107 *) Remove confusing variables in function signatures in files
13108 ssl/ssl_lib.c and ssl/ssl.h.
13109 [Lennart Bong <lob@kulthea.stacken.kth.se>]
13111 *) Don't install bss_file.c under PREFIX/include/
13112 [Lennart Bong <lob@kulthea.stacken.kth.se>]
13114 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
13115 functions that return function pointers and has support for NT specific
13116 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
13117 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
13118 unsigned to signed types: this was killing the Win32 compile.
13121 *) Add new certificate file to stack functions,
13122 SSL_add_dir_cert_subjects_to_stack() and
13123 SSL_add_file_cert_subjects_to_stack(). These largely supplant
13124 SSL_load_client_CA_file(), and can be used to add multiple certs easily
13125 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
13126 This means that Apache-SSL and similar packages don't have to mess around
13127 to add as many CAs as they want to the preferred list.
13130 *) Experiment with doxygen documentation. Currently only partially applied to
13132 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
13133 openssl.doxy as the configuration file.
13136 *) Get rid of remaining C++-style comments which strict C compilers hate.
13137 [Ralf S. Engelschall, pointed out by Carlos Amengual]
13139 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
13140 compiled in by default: it has problems with large keys.
13143 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
13144 DH private keys and/or callback functions which directly correspond to
13145 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
13146 is needed for applications which have to configure certificates on a
13147 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
13149 For the RSA certificate situation is makes no difference, but
13150 for the DSA certificate situation this fixes the "no shared cipher"
13151 problem where the OpenSSL cipher selection procedure failed because the
13152 temporary keys were not overtaken from the context and the API provided
13153 no way to reconfigure them.
13154 The new functions now let applications reconfigure the stuff and they
13155 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
13156 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
13157 non-public-API function ssl_cert_instantiate() is used as a helper
13158 function and also to reduce code redundancy inside ssl_rsa.c.
13159 [Ralf S. Engelschall]
13161 *) Move s_server -dcert and -dkey options out of the undocumented feature
13162 area because they are useful for the DSA situation and should be
13163 recognized by the users.
13164 [Ralf S. Engelschall]
13166 *) Fix the cipher decision scheme for export ciphers: the export bits are
13167 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
13168 SSL_EXP_MASK. So, the original variable has to be used instead of the
13169 already masked variable.
13170 [Richard Levitte <levitte@stacken.kth.se>]
13172 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
13173 [Richard Levitte <levitte@stacken.kth.se>]
13175 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
13176 from `int' to `unsigned int' because it's a length and initialized by
13177 EVP_DigestFinal() which expects an `unsigned int *'.
13178 [Richard Levitte <levitte@stacken.kth.se>]
13180 *) Don't hard-code path to Perl interpreter on shebang line of Configure
13181 script. Instead use the usual Shell->Perl transition trick.
13182 [Ralf S. Engelschall]
13184 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
13185 (in addition to RSA certificates) to match the behaviour of `openssl dsa
13186 -noout -modulus' as it's already the case for `openssl rsa -noout
13187 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
13188 currently the public key is printed (a decision which was already done by
13189 `openssl dsa -modulus' in the past) which serves a similar purpose.
13190 Additionally the NO_RSA no longer completely removes the whole -modulus
13191 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
13193 [Ralf S. Engelschall]
13195 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
13196 BIO. See the source (crypto/evp/bio_ok.c) for more info.
13197 [Arne Ansper <arne@ats.cyber.ee>]
13199 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
13200 to be added. Now both 'req' and 'ca' can use new objects defined in the
13204 *) Add cool BIO that does syslog (or event log on NT).
13205 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
13207 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
13208 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
13209 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
13210 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
13213 *) Add preliminary config info for new extension code.
13216 *) Make RSA_NO_PADDING really use no padding.
13217 [Ulf Moeller <ulf@fitug.de>]
13219 *) Generate errors when private/public key check is done.
13222 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
13223 for some CRL extensions and new objects added.
13226 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
13227 key usage extension and fuller support for authority key id.
13230 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
13231 padding method for RSA, which is recommended for new applications in PKCS
13232 #1 v2.0 (RFC 2437, October 1998).
13233 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
13234 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
13235 against Bleichbacher's attack on RSA.
13236 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
13239 *) Updates to the new SSL compression code
13240 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13242 *) Fix so that the version number in the master secret, when passed
13243 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
13244 (because the server will not accept higher), that the version number
13245 is 0x03,0x01, not 0x03,0x00
13246 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13248 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
13249 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
13250 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
13253 *) Support for RAW extensions where an arbitrary extension can be
13254 created by including its DER encoding. See apps/openssl.cnf for
13258 *) Make sure latest Perl versions don't interpret some generated C array
13259 code as Perl array code in the crypto/err/err_genc.pl script.
13260 [Lars Weber <3weber@informatik.uni-hamburg.de>]
13262 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
13263 not many people have the assembler. Various Win32 compilation fixes and
13264 update to the INSTALL.W32 file with (hopefully) more accurate Win32
13265 build instructions.
13268 *) Modify configure script 'Configure' to automatically create crypto/date.h
13269 file under Win32 and also build pem.h from pem.org. New script
13270 util/mkfiles.pl to create the MINFO file on environments that can't do a
13271 'make files': perl util/mkfiles.pl >MINFO should work.
13274 *) Major rework of DES function declarations, in the pursuit of correctness
13275 and purity. As a result, many evil casts evaporated, and some weirdness,
13276 too. You may find this causes warnings in your code. Zapping your evil
13277 casts will probably fix them. Mostly.
13280 *) Fix for a typo in asn1.h. Bug fix to object creation script
13281 obj_dat.pl. It considered a zero in an object definition to mean
13282 "end of object": none of the objects in objects.h have any zeros
13283 so it wasn't spotted.
13284 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
13286 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
13287 Masking (CBCM). In the absence of test vectors, the best I have been able
13288 to do is check that the decrypt undoes the encrypt, so far. Send me test
13289 vectors if you have them.
13292 *) Correct calculation of key length for export ciphers (too much space was
13293 allocated for null ciphers). This has not been tested!
13296 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
13297 message is now correct (it understands "crypto" and "ssl" on its
13298 command line). There is also now an "update" option. This will update
13299 the util/ssleay.num and util/libeay.num files with any new functions.
13301 perl util/mkdef.pl crypto ssl update
13302 it will update them.
13305 *) Overhauled the Perl interface (perl/*):
13306 - ported BN stuff to OpenSSL's different BN library
13307 - made the perl/ source tree CVS-aware
13308 - renamed the package from SSLeay to OpenSSL (the files still contain
13309 their history because I've copied them in the repository)
13310 - removed obsolete files (the test scripts will be replaced
13311 by better Test::Harness variants in the future)
13312 [Ralf S. Engelschall]
13314 *) First cut for a very conservative source tree cleanup:
13315 1. merge various obsolete readme texts into doc/ssleay.txt
13316 where we collect the old documents and readme texts.
13317 2. remove the first part of files where I'm already sure that we no
13318 longer need them because of three reasons: either they are just temporary
13319 files which were left by Eric or they are preserved original files where
13320 I've verified that the diff is also available in the CVS via "cvs diff
13321 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
13322 the crypto/md/ stuff).
13323 [Ralf S. Engelschall]
13325 *) More extension code. Incomplete support for subject and issuer alt
13326 name, issuer and authority key id. Change the i2v function parameters
13327 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
13328 what that's for :-) Fix to ASN1 macro which messed up
13329 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
13332 *) Preliminary support for ENUMERATED type. This is largely copied from the
13336 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
13337 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13339 *) Make sure `make rehash' target really finds the `openssl' program.
13340 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
13342 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
13343 like to hear about it if this slows down other processors.
13346 *) Add CygWin32 platform information to Configure script.
13347 [Alan Batie <batie@aahz.jf.intel.com>]
13349 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
13350 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
13352 *) New program nseq to manipulate netscape certificate sequences
13355 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
13359 *) Fixes to BN code. Previously the default was to define BN_RECURSION
13360 but the BN code had some problems that would cause failures when
13361 doing certificate verification and some other functions.
13362 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13364 *) Add ASN1 and PEM code to support netscape certificate sequences.
13367 *) Add ASN1 and PEM code to support netscape certificate sequences.
13370 *) Add several PKIX and private extended key usage OIDs.
13373 *) Modify the 'ca' program to handle the new extension code. Modify
13374 openssl.cnf for new extension format, add comments.
13377 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
13378 and add a sample to openssl.cnf so req -x509 now adds appropriate
13382 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
13383 error code, add initial support to X509_print() and x509 application.
13386 *) Takes a deep breath and start adding X509 V3 extension support code. Add
13387 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
13388 stuff is currently isolated and isn't even compiled yet.
13391 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
13392 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
13393 Removed the versions check from X509 routines when loading extensions:
13394 this allows certain broken certificates that don't set the version
13395 properly to be processed.
13398 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
13399 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
13400 can still be regenerated with "make depend".
13403 *) Spelling mistake in C version of CAST-128.
13404 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
13406 *) Changes to the error generation code. The perl script err-code.pl
13407 now reads in the old error codes and retains the old numbers, only
13408 adding new ones if necessary. It also only changes the .err files if new
13409 codes are added. The makefiles have been modified to only insert errors
13410 when needed (to avoid needlessly modifying header files). This is done
13411 by only inserting errors if the .err file is newer than the auto generated
13412 C file. To rebuild all the error codes from scratch (the old behaviour)
13413 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
13414 or delete all the .err files.
13417 *) CAST-128 was incorrectly implemented for short keys. The C version has
13418 been fixed, but is untested. The assembler versions are also fixed, but
13419 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
13420 to regenerate it if needed.
13421 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
13422 Hagino <itojun@kame.net>]
13424 *) File was opened incorrectly in randfile.c.
13425 [Ulf Möller <ulf@fitug.de>]
13427 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
13428 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
13429 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
13430 al: it's just almost always a UTCTime. Note this patch adds new error
13431 codes so do a "make errors" if there are problems.
13434 *) Correct Linux 1 recognition in config.
13435 [Ulf Möller <ulf@fitug.de>]
13437 *) Remove pointless MD5 hash when using DSA keys in ca.
13438 [Anonymous <nobody@replay.com>]
13440 *) Generate an error if given an empty string as a cert directory. Also
13441 generate an error if handed NULL (previously returned 0 to indicate an
13442 error, but didn't set one).
13443 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
13445 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
13448 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
13449 parameters. This was causing a warning which killed off the Win32 compile.
13452 *) Remove C++ style comments from crypto/bn/bn_local.h.
13453 [Neil Costigan <neil.costigan@celocom.com>]
13455 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
13456 based on a text string, looking up short and long names and finally
13457 "dot" format. The "dot" format stuff didn't work. Added new function
13458 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
13459 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
13460 OID is not part of the table.
13463 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
13464 X509_LOOKUP_by_alias().
13467 *) Sort openssl functions by name.
13470 *) Get the gendsa program working (hopefully) and add it to app list. Remove
13471 encryption from sample DSA keys (in case anyone is interested the password
13475 *) Make _all_ *_free functions accept a NULL pointer.
13476 [Frans Heymans <fheymans@isaserver.be>]
13478 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
13480 [Anonymous <nobody@replay.com>]
13482 *) s_server should send the CAfile as acceptable CAs, not its own cert.
13483 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13485 *) Don't blow it for numeric -newkey arguments to apps/req.
13486 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13488 *) Temp key "for export" tests were wrong in s3_srvr.c.
13489 [Anonymous <nobody@replay.com>]
13491 *) Add prototype for temp key callback functions
13492 SSL_CTX_set_tmp_{rsa,dh}_callback().
13495 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
13496 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
13499 *) X509_name_add_entry() freed the wrong thing after an error.
13500 [Arne Ansper <arne@ats.cyber.ee>]
13502 *) rsa_eay.c would attempt to free a NULL context.
13503 [Arne Ansper <arne@ats.cyber.ee>]
13505 *) BIO_s_socket() had a broken should_retry() on Windoze.
13506 [Arne Ansper <arne@ats.cyber.ee>]
13508 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
13509 [Arne Ansper <arne@ats.cyber.ee>]
13511 *) Make sure the already existing X509_STORE->depth variable is initialized
13512 in X509_STORE_new(), but document the fact that this variable is still
13513 unused in the certificate verification process.
13514 [Ralf S. Engelschall]
13516 *) Fix the various library and apps files to free up pkeys obtained from
13517 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
13520 *) Fix reference counting in X509_PUBKEY_get(). This makes
13521 demos/maurice/example2.c work, amongst others, probably.
13522 [Steve Henson and Ben Laurie]
13524 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
13525 `openssl' and second, the shortcut symlinks for the `openssl <command>'
13526 are no longer created. This way we have a single and consistent command
13527 line interface `openssl <command>', similar to `cvs <command>'.
13528 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
13530 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
13531 BIT STRING wrapper always have zero unused bits.
13534 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
13537 *) Make the top-level INSTALL documentation easier to understand.
13540 *) Makefiles updated to exit if an error occurs in a sub-directory
13541 make (including if user presses ^C) [Paul Sutton]
13543 *) Make Montgomery context stuff explicit in RSA data structure.
13546 *) Fix build order of pem and err to allow for generated pem.h.
13549 *) Fix renumbering bug in X509_NAME_delete_entry().
13552 *) Enhanced the err-ins.pl script so it makes the error library number
13553 global and can add a library name. This is needed for external ASN1 and
13554 other error libraries.
13557 *) Fixed sk_insert which never worked properly.
13560 *) Fix ASN1 macros so they can handle indefinite length constructed
13561 EXPLICIT tags. Some non standard certificates use these: they can now
13565 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
13566 into a single doc/ssleay.txt bundle. This way the information is still
13567 preserved but no longer messes up this directory. Now it's new room for
13568 the new set of documentation files.
13569 [Ralf S. Engelschall]
13571 *) SETs were incorrectly DER encoded. This was a major pain, because they
13572 shared code with SEQUENCEs, which aren't coded the same. This means that
13573 almost everything to do with SETs or SEQUENCEs has either changed name or
13574 number of arguments.
13575 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
13577 *) Fix test data to work with the above.
13580 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
13581 was already fixed by Eric for 0.9.1 it seems.
13582 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
13584 *) Autodetect FreeBSD3.
13587 *) Fix various bugs in Configure. This affects the following platforms:
13591 unixware-2.0-pentium
13595 *) Eliminate generated files from CVS. Reorder tests to regenerate files
13596 before they are needed.
13599 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
13603 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
13605 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
13606 changed SSLeay to OpenSSL in version strings.
13607 [Ralf S. Engelschall]
13609 *) Some fixups to the top-level documents.
13612 *) Fixed the nasty bug where rsaref.h was not found under compile-time
13613 because the symlink to include/ was missing.
13614 [Ralf S. Engelschall]
13616 *) Incorporated the popular no-RSA/DSA-only patches
13617 which allow to compile a RSA-free SSLeay.
13618 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
13620 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
13621 when "ssleay" is still not found.
13622 [Ralf S. Engelschall]
13624 *) Added more platforms to Configure: Cray T3E, HPUX 11,
13625 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
13627 *) Updated the README file.
13628 [Ralf S. Engelschall]
13630 *) Added various .cvsignore files in the CVS repository subdirs
13631 to make a "cvs update" really silent.
13632 [Ralf S. Engelschall]
13634 *) Recompiled the error-definition header files and added
13635 missing symbols to the Win32 linker tables.
13636 [Ralf S. Engelschall]
13638 *) Cleaned up the top-level documents;
13639 o new files: CHANGES and LICENSE
13640 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
13641 o merged COPYRIGHT into LICENSE
13642 o removed obsolete TODO file
13643 o renamed MICROSOFT to INSTALL.W32
13644 [Ralf S. Engelschall]
13646 *) Removed dummy files from the 0.9.1b source tree:
13647 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
13648 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
13649 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
13650 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
13651 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
13652 [Ralf S. Engelschall]
13654 *) Added various platform portability fixes.
13657 *) The Genesis of the OpenSSL rpject:
13658 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
13659 Young and Tim J. Hudson created while they were working for C2Net until
13661 [The OpenSSL Project]
13664 Changes between 0.9.0b and 0.9.1b [not released]
13666 *) Updated a few CA certificates under certs/
13669 *) Changed some BIGNUM api stuff.
13672 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
13673 DGUX x86, Linux Alpha, etc.
13676 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
13677 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
13681 *) Add -strparse option to asn1pars program which parses nested
13683 [Dr Stephen Henson <shenson@bigfoot.com>]
13685 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
13688 *) DSA fix for "ca" program.
13691 *) Added "-genkey" option to "dsaparam" program.
13694 *) Added RIPE MD160 (rmd160) message digest.
13697 *) Added -a (all) option to "ssleay version" command.
13700 *) Added PLATFORM define which is the id given to Configure.
13703 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
13706 *) Extended the ASN.1 parser routines.
13709 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
13712 *) Added a BN_CTX to the BN library.
13715 *) Fixed the weak key values in DES library
13718 *) Changed API in EVP library for cipher aliases.
13721 *) Added support for RC2/64bit cipher.
13724 *) Converted the lhash library to the crypto/mem.c functions.
13727 *) Added more recognized ASN.1 object ids.
13730 *) Added more RSA padding checks for SSL/TLS.
13733 *) Added BIO proxy/filter functionality.
13736 *) Added extra_certs to SSL_CTX which can be used
13737 send extra CA certificates to the client in the CA cert chain sending
13738 process. It can be configured with SSL_CTX_add_extra_chain_cert().
13741 *) Now Fortezza is denied in the authentication phase because
13742 this is key exchange mechanism is not supported by SSLeay at all.
13745 *) Additional PKCS1 checks.
13748 *) Support the string "TLSv1" for all TLS v1 ciphers.
13751 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
13752 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
13755 *) Fixed a few memory leaks.
13758 *) Fixed various code and comment typos.
13761 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
13762 bytes sent in the client random.
13763 [Edward Bishop <ebishop@spyglass.com>]