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 *) All of the low level MD2, MD4, MD5, MDC2, RIPEMD160, SHA1, SHA224, SHA256,
13 SHA384, SHA512 and Whirlpool digest functions have been deprecated.
15 MD2, MD2_options, MD2_Init, MD2_Update, MD2_Final, MD4, MD4_Init,
16 MD4_Update, MD4_Final, MD4_Transform, MD5, MD5_Init, MD5_Update,
17 MD5_Final, MD5_Transform, MDC2, MDC2_Init, MDC2_Update, MDC2_Final,
18 RIPEMD160, RIPEMD160_Init, RIPEMD160_Update, RIPEMD160_Final,
19 RIPEMD160_Transform, SHA1_Init, SHA1_Update, SHA1_Final,
20 SHA1_Transform, SHA224_Init, SHA224_Update, SHA224_Final,
21 SHA224_Transform, SHA256_Init, SHA256_Update, SHA256_Final,
22 SHA256_Transform, SHA384, SHA384_Init, SHA384_Update, SHA384_Final,
23 SHA512, SHA512_Init, SHA512_Update, SHA512_Final, SHA512_Transform,
24 WHIRLPOOL, WHIRLPOOL_Init, WHIRLPOOL_Update, WHIRLPOOL_BitUpdate
26 Use of these low level functions has been informally discouraged for a long
27 time. Instead applications should instead use the EVP_DigestInit_ex,
28 EVP_DigestUpdate(3) and EVP_DigestFinal_ex(3) functions.
31 *) Corrected the documentation of the return values from the EVP_DigestSign*
32 set of functions. The documentation mentioned negative values for some
33 errors, but this was never the case, so the mention of negative values
36 Code that followed the documentation and thereby check with something
37 like 'EVP_DigestSignInit(...) <= 0' will continue to work undisturbed.
40 *) All of the low level Blowfish functions have been deprecated including:
41 BF_set_key, BF_encrypt, BF_decrypt, BF_ecb_encrypt, BF_cbc_encrypt,
42 BF_cfb64_encrypt, BF_ofb64_encrypt, and BF_options.
43 Use of these low level functions has been informally discouraged for a long
44 time. Instead applications should use the high level EVP APIs, e.g.
45 EVP_EncryptInit_ex, EVP_EncryptUpdate, EVP_EncryptFinal_ex, and the
46 equivalently named decrypt functions.
49 *) All of the low level CAST functions have been deprecated including:
50 CAST_set_key, CAST_ecb_encrypt, CAST_encrypt, CAST_decrypt,
51 CAST_cbc_encrypt, CAST_cfb64_encrypt and CAST_ofb64_encrypt
52 Use of these low level functions has been informally discouraged for a long
53 time. Instead applications should use the high level EVP APIs, e.g.
54 EVP_EncryptInit_ex, EVP_EncryptUpdate, EVP_EncryptFinal_ex, and the
55 equivalently named decrypt functions.
58 *) All of the low level Camelllia functions have been deprecated including:
59 Camellia_set_key, Camellia_encrypt, Camellia_decrypt, Camellia_ecb_encrypt,
60 Camellia_cbc_encrypt, Camellia_cfb128_encrypt, Camellia_cfb1_encrypt,
61 Camellia_cfb8_encrypt, Camellia_ofb128_encrypt and Camellia_ctr128_encrypt.
62 Use of these low level functions has been informally discouraged for a long
63 time. Instead applications should use the high level EVP APIs, e.g.
64 EVP_EncryptInit_ex, EVP_EncryptUpdate, EVP_EncryptFinal_ex, and the
65 equivalently named decrypt functions.
68 *) Removed include/openssl/opensslconf.h.in and replaced it with
69 include/openssl/configuration.h.in, which differs in not including
70 <openssl/macros.h>. A short header include/openssl/opensslconf.h
71 was added to include both.
73 This allows internal hacks where one might need to modify the set
74 of configured macros, for example this if deprecated symbols are
75 still supposed to be available internally:
77 #include <openssl/configuration.h>
79 #undef OPENSSL_NO_DEPRECATED
80 #define OPENSSL_SUPPRESS_DEPRECATED
82 #include <openssl/macros.h>
84 This should not be used by applications that use the exported
85 symbols, as that will lead to linking errors.
88 *) Fixed an an overflow bug in the x64_64 Montgomery squaring procedure
89 used in exponentiation with 512-bit moduli. No EC algorithms are
90 affected. Analysis suggests that attacks against 2-prime RSA1024,
91 3-prime RSA1536, and DSA1024 as a result of this defect would be very
92 difficult to perform and are not believed likely. Attacks against DH512
93 are considered just feasible. However, for an attack the target would
94 have to re-use the DH512 private key, which is not recommended anyway.
95 Also applications directly using the low level API BN_mod_exp may be
96 affected if they use BN_FLG_CONSTTIME.
100 *) Most memory-debug features have been deprecated, and the functionality
101 replaced with no-ops.
104 *) Introduced a new method type and API, OSSL_SERIALIZER, to
105 represent generic serializers. An implementation is expected to
106 be able to serialize an object associated with a given name (such
107 as an algorithm name for an asymmetric key) into forms given by
108 implementation properties.
110 Serializers are primarily used from inside libcrypto, through
111 calls to functions like EVP_PKEY_print_private(),
112 PEM_write_bio_PrivateKey() and similar.
114 Serializers are specified in such a way that they can be made to
115 directly handle the provider side portion of an object, if this
116 provider side part comes from the same provider as the serializer
117 itself, but can also be made to handle objects in parametrized
118 form (as an OSSL_PARAM array of data). This allows a provider to
119 offer generic serializers as a service for any other provider.
122 *) Added a .pragma directive to the syntax of configuration files, to
123 allow varying behavior in a supported and predictable manner.
124 Currently added pragma:
128 This allows dollar signs to be a keyword character unless it's
129 followed by a opening brace or parenthesis. This is useful for
130 platforms where dollar signs are commonly used in names, such as
131 volume names and system directory names on VMS.
134 *) Added functionality to create an EVP_PKEY from user data. This
135 is effectively the same as creating a RSA, DH or DSA object and
136 then assigning them to an EVP_PKEY, but directly using algorithm
137 agnostic EVP functions. A benefit is that this should be future
138 proof for public key algorithms to come.
141 *) Change the interpretation of the '--api' configuration option to
142 mean that this is a desired API compatibility level with no
143 further meaning. The previous interpretation, that this would
144 also mean to remove all deprecated symbols up to and including
145 the given version, no requires that 'no-deprecated' is also used
146 in the configuration.
148 When building applications, the desired API compatibility level
149 can be set with the OPENSSL_API_COMPAT macro like before. For
150 API compatibility version below 3.0, the old style numerical
151 value is valid as before, such as -DOPENSSL_API_COMPAT=0x10100000L.
152 For version 3.0 and on, the value is expected to be the decimal
153 value calculated from the major and minor version like this:
155 MAJOR * 10000 + MINOR * 100
159 -DOPENSSL_API_COMPAT=30000 For 3.0
160 -DOPENSSL_API_COMPAT=30200 For 3.2
162 To hide declarations that are deprecated up to and including the
163 given API compatibility level, -DOPENSSL_NO_DEPRECATED must be
164 given when building the application as well.
167 *) Added the X509_LOOKUP_METHOD called X509_LOOKUP_store, to allow
168 access to certificate and CRL stores via URIs and OSSL_STORE
171 This adds the following functions:
174 X509_STORE_load_file()
175 X509_STORE_load_path()
176 X509_STORE_load_store()
177 SSL_add_store_cert_subjects_to_stack()
178 SSL_CTX_set_default_verify_store()
179 SSL_CTX_load_verify_file()
180 SSL_CTX_load_verify_dir()
181 SSL_CTX_load_verify_store()
183 Also, the following functions are now deprecated:
185 - X509_STORE_load_locations() (use X509_STORE_load_file(),
186 X509_STORE_load_path() or X509_STORE_load_store() instead)
187 - SSL_CTX_load_verify_locations() (use SSL_CTX_load_verify_file(),
188 SSL_CTX_load_verify_dir() or SSL_CTX_load_verify_store() instead)
191 *) Added a new method to gather entropy on VMS, based on SYS$GET_ENTROPY.
192 The presence of this system service is determined at run-time.
195 *) Added functionality to create an EVP_PKEY context based on data
196 for methods from providers. This takes an algorithm name and a
197 property query string and simply stores them, with the intent
198 that any operation that uses this context will use those strings
199 to fetch the needed methods implicitly, thereby making the port
200 of application written for pre-3.0 OpenSSL easier.
203 *) The undocumented function NCONF_WIN32() has been deprecated; for
204 conversion details see the HISTORY section of doc/man5/config.pod
207 *) Introduced the new functions EVP_DigestSignInit_ex() and
208 EVP_DigestVerifyInit_ex(). The macros EVP_DigestSignUpdate() and
209 EVP_DigestVerifyUpdate() have been converted to functions. See the man
210 pages for further details.
213 *) Most common options (such as -rand/-writerand, TLS version control, etc)
214 were refactored and point to newly-enhanced descriptions in openssl.pod
217 *) Over two thousand fixes were made to the documentation, including:
218 adding missing command flags, better style conformance, documentation
220 [Rich Salz, Richard Levitte]
222 *) s390x assembly pack: add hardware-support for P-256, P-384, P-521,
223 X25519, X448, Ed25519 and Ed448.
226 *) Print all values for a PKCS#12 attribute with 'openssl pkcs12', not just
230 *) Deprecated the public definition of ERR_STATE as well as the function
231 ERR_get_state(). This is done in preparation of making ERR_STATE an
235 *) Added ERR functionality to give callers access to the stored function
236 names that have replaced the older function code based functions.
238 New functions are ERR_get_error_func(), ERR_peek_error_func(),
239 ERR_peek_last_error_func(), ERR_get_error_data(), ERR_peek_error_data(),
240 ERR_peek_last_error_data(), ERR_get_error_all(), ERR_peek_error_all()
241 and ERR_peek_last_error_all().
243 These functions have become deprecated: ERR_get_error_line_data(),
244 ERR_peek_error_line_data(), ERR_peek_last_error_line_data() and
245 ERR_func_error_string().
248 *) Extended testing to be verbose for failing tests only. The make variables
249 VERBOSE_FAILURE or VF can be used to enable this:
251 $ make VF=1 test # Unix
252 $ mms /macro=(VF=1) test ! OpenVMS
253 $ nmake VF=1 test # Windows
257 *) For built-in EC curves, ensure an EC_GROUP built from the curve name is
258 used even when parsing explicit parameters, when loading a serialized key
259 or calling `EC_GROUP_new_from_ecpkparameters()`/
260 `EC_GROUP_new_from_ecparameters()`.
261 This prevents bypass of security hardening and performance gains,
262 especially for curves with specialized EC_METHODs.
263 By default, if a key encoded with explicit parameters is loaded and later
264 serialized, the output is still encoded with explicit parameters, even if
265 internally a "named" EC_GROUP is used for computation.
268 *) Compute ECC cofactors if not provided during EC_GROUP construction. Before
269 this change, EC_GROUP_set_generator would accept order and/or cofactor as
270 NULL. After this change, only the cofactor parameter can be NULL. It also
271 does some minimal sanity checks on the passed order.
275 *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
276 An attack is simple, if the first CMS_recipientInfo is valid but the
277 second CMS_recipientInfo is chosen ciphertext. If the second
278 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
279 encryption key will be replaced by garbage, and the message cannot be
280 decoded, but if the RSA decryption fails, the correct encryption key is
281 used and the recipient will not notice the attack.
282 As a work around for this potential attack the length of the decrypted
283 key must be equal to the cipher default key length, in case the
284 certifiate is not given and all recipientInfo are tried out.
285 The old behaviour can be re-enabled in the CMS code by setting the
286 CMS_DEBUG_DECRYPT flag.
289 *) Early start up entropy quality from the DEVRANDOM seed source has been
290 improved for older Linux systems. The RAND subsystem will wait for
291 /dev/random to be producing output before seeding from /dev/urandom.
292 The seeded state is stored for future library initialisations using
293 a system global shared memory segment. The shared memory identifier
294 can be configured by defining OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID to
295 the desired value. The default identifier is 114.
298 *) Revised BN_generate_prime_ex to not avoid factors 2..17863 in p-1
299 when primes for RSA keys are computed.
300 Since we previously always generated primes == 2 (mod 3) for RSA keys,
301 the 2-prime and 3-prime RSA modules were easy to distinguish, since
302 N = p*q = 1 (mod 3), but N = p*q*r = 2 (mod 3). Therefore fingerprinting
303 2-prime vs. 3-prime RSA keys was possible by computing N mod 3.
304 This avoids possible fingerprinting of newly generated RSA modules.
307 *) Correct the extended master secret constant on EBCDIC systems. Without this
308 fix TLS connections between an EBCDIC system and a non-EBCDIC system that
309 negotiate EMS will fail. Unfortunately this also means that TLS connections
310 between EBCDIC systems with this fix, and EBCDIC systems without this
311 fix will fail if they negotiate EMS.
314 *) Changed the library initialisation so that the config file is now loaded
315 by default. This was already the case for libssl. It now occurs for both
316 libcrypto and libssl. Use the OPENSSL_INIT_NO_LOAD_CONFIG option to
317 OPENSSL_init_crypto() to suppress automatic loading of a config file.
320 *) Introduced new error raising macros, ERR_raise() and ERR_raise_data(),
321 where the former acts as a replacement for ERR_put_error(), and the
322 latter replaces the combination ERR_put_error()+ERR_add_error_data().
323 ERR_raise_data() adds more flexibility by taking a format string and
324 an arbitrary number of arguments following it, to be processed with
328 *) Introduced a new function, OSSL_PROVIDER_available(), which can be used
329 to check if a named provider is loaded and available. When called, it
330 will also activate all fallback providers if such are still present.
333 *) Enforce a minimum DH modulus size of 512 bits.
336 *) Changed DH parameters to generate the order q subgroup instead of 2q.
337 Previously generated DH parameters are still accepted by DH_check
338 but DH_generate_key works around that by clearing bit 0 of the
339 private key for those. This avoids leaking bit 0 of the private key.
342 *) Significantly reduce secure memory usage by the randomness pools.
345 *) {CRYPTO,OPENSSL}_mem_debug_{push,pop} are now no-ops and have been
349 *) A new type, EVP_KEYEXCH, has been introduced to represent key exchange
350 algorithms. An implementation of a key exchange algorithm can be obtained
351 by using the function EVP_KEYEXCH_fetch(). An EVP_KEYEXCH algorithm can be
352 used in a call to EVP_PKEY_derive_init_ex() which works in a similar way to
353 the older EVP_PKEY_derive_init() function. See the man pages for the new
354 functions for further details.
357 *) The EVP_PKEY_CTX_set_dh_pad() macro has now been converted to a function.
360 *) Removed the function names from error messages and deprecated the
363 *) Removed NextStep support and the macro OPENSSL_UNISTD
366 *) Removed DES_check_key. Also removed OPENSSL_IMPLEMENT_GLOBAL,
367 OPENSSL_GLOBAL_REF, OPENSSL_DECLARE_GLOBAL.
368 Also removed "export var as function" capability; we do not export
369 variables, only functions.
372 *) RC5_32_set_key has been changed to return an int type, with 0 indicating
373 an error and 1 indicating success. In previous versions of OpenSSL this
374 was a void type. If a key was set longer than the maximum possible this
378 *) Support SM2 signing and verification schemes with X509 certificate.
381 *) Use SHA256 as the default digest for TS query in the ts app.
384 *) Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898.
385 This checks that the salt length is at least 128 bits, the derived key
386 length is at least 112 bits, and that the iteration count is at least 1000.
387 For backwards compatibility these checks are disabled by default in the
388 default provider, but are enabled by default in the fips provider.
389 To enable or disable these checks use the control
390 EVP_KDF_CTRL_SET_PBKDF2_PKCS5_MODE.
393 *) Default cipher lists/suites are now available via a function, the
394 #defines are deprecated.
397 *) Add target VC-WIN32-UWP, VC-WIN64A-UWP, VC-WIN32-ARM-UWP and
398 VC-WIN64-ARM-UWP in Windows OneCore target for making building libraries
399 for Windows Store apps easier. Also, the "no-uplink" option has been added.
402 *) Join the directories crypto/x509 and crypto/x509v3
405 *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
406 This changes the size when using the genpkey app when no size is given. It
407 fixes an omission in earlier changes that changed all RSA, DSA and DH
408 generation apps to use 2048 bits by default.
411 *) Added command 'openssl kdf' that uses the EVP_KDF API.
414 *) Added command 'openssl mac' that uses the EVP_MAC API.
417 *) Added OPENSSL_info() to get diverse built-in OpenSSL data, such
418 as default directories. Also added the command 'openssl info'
419 for scripting purposes.
422 *) All of the low level AES functions have been deprecated including:
423 AES_options, AES_set_encrypt_key, AES_set_decrypt_key, AES_encrypt,
424 AES_decrypt, AES_ecb_encrypt, AES_cbc_encrypt, AES_cfb128_encrypt,
425 AES_cfb1_encrypt, AES_cfb8_encrypt, AES_ofb128_encrypt, AES_wrap_key and
427 Use of these low level functions has been informally discouraged for a long
428 time. Instead applications should use the high level EVP APIs, e.g.
429 EVP_EncryptInit_ex, EVP_EncryptUpdate, EVP_EncryptFinal_ex, and the
430 equivalently named decrypt functions.
432 The functions AES_ige_encrypt() and AES_bi_ige_encrypt() have also been
433 deprecated. These undocumented functions were never integrated into the EVP
434 layer and implement the AES Infinite Garble Extension (IGE) mode and AES
435 Bi-directional IGE mode. These modes were never formally standardised and
436 usage of these functions is believed to be very small. In particular
437 AES_bi_ige_encrypt() has a known bug. It accepts 2 AES keys, but only one
438 is ever used. The security implications are believed to be minimal, but
439 this issue was never fixed for backwards compatibility reasons. New code
440 should not use these modes.
443 *) Add prediction resistance to the DRBG reseeding process.
446 *) Limit the number of blocks in a data unit for AES-XTS to 2^20 as
447 mandated by IEEE Std 1619-2018.
450 *) Added newline escaping functionality to a filename when using openssl dgst.
451 This output format is to replicate the output format found in the '*sum'
452 checksum programs. This aims to preserve backward compatibility.
453 [Matt Eaton, Richard Levitte, and Paul Dale]
455 *) Removed the heartbeat message in DTLS feature, as it has very
456 little usage and doesn't seem to fulfill a valuable purpose.
457 The configuration option is now deprecated.
460 *) Changed the output of 'openssl {digestname} < file' to display the
461 digest name in its output.
464 *) Added a new generic trace API which provides support for enabling
465 instrumentation through trace output. This feature is mainly intended
466 as an aid for developers and is disabled by default. To utilize it,
467 OpenSSL needs to be configured with the `enable-trace` option.
469 If the tracing API is enabled, the application can activate trace output
470 by registering BIOs as trace channels for a number of tracing and debugging
473 The 'openssl' application has been expanded to enable any of the types
474 available via environment variables defined by the user, and serves as
475 one possible example on how to use this functionality.
476 [Richard Levitte & Matthias St. Pierre]
478 *) Added build tests for C++. These are generated files that only do one
479 thing, to include one public OpenSSL head file each. This tests that
480 the public header files can be usefully included in a C++ application.
482 This test isn't enabled by default. It can be enabled with the option
483 'enable-buildtest-c++'.
486 *) Add Single Step KDF (EVP_KDF_SS) to EVP_KDF.
489 *) Add KMAC to EVP_MAC.
492 *) Added property based algorithm implementation selection framework to
496 *) Added SCA hardening for modular field inversion in EC_GROUP through
497 a new dedicated field_inv() pointer in EC_METHOD.
498 This also addresses a leakage affecting conversions from projective
499 to affine coordinates.
500 [Billy Bob Brumley, Nicola Tuveri]
502 *) Added EVP_KDF, an EVP layer KDF API, to simplify adding KDF and PRF
503 implementations. This includes an EVP_PKEY to EVP_KDF bridge for
504 those algorithms that were already supported through the EVP_PKEY API
505 (scrypt, TLS1 PRF and HKDF). The low-level KDF functions for PBKDF2
506 and scrypt are now wrappers that call EVP_KDF.
509 *) Build devcrypto engine as a dynamic engine.
512 *) Add keyed BLAKE2 to EVP_MAC.
515 *) Fix a bug in the computation of the endpoint-pair shared secret used
516 by DTLS over SCTP. This breaks interoperability with older versions
517 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime
518 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling
519 interoperability with such broken implementations. However, enabling
520 this switch breaks interoperability with correct implementations.
522 *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a
523 re-used X509_PUBKEY object if the second PUBKEY is malformed.
526 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
529 *) Change the license to the Apache License v2.0.
532 *) Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
534 o Major releases (indicated by incrementing the MAJOR release number)
535 may introduce incompatible API/ABI changes.
536 o Minor releases (indicated by incrementing the MINOR release number)
537 may introduce new features but retain API/ABI compatibility.
538 o Patch releases (indicated by incrementing the PATCH number)
539 are intended for bug fixes and other improvements of existing
540 features only (like improving performance or adding documentation)
541 and retain API/ABI compatibility.
544 *) Add support for RFC5297 SIV mode (siv128), including AES-SIV.
547 *) Remove the 'dist' target and add a tarball building script. The
548 'dist' target has fallen out of use, and it shouldn't be
549 necessary to configure just to create a source distribution.
552 *) Recreate the OS390-Unix config target. It no longer relies on a
553 special script like it did for OpenSSL pre-1.1.0.
556 *) Instead of having the source directories listed in Configure, add
557 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
561 *) Add GMAC to EVP_MAC.
564 *) Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
567 *) Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
568 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
569 to facilitate the continued use of MACs through raw private keys in
570 functionality such as EVP_DigestSign* and EVP_DigestVerify*.
573 *) Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
574 should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
577 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
578 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
579 are retained for backwards compatibility.
582 *) AES-XTS mode now enforces that its two keys are different to mitigate
583 the attacked described in "Efficient Instantiations of Tweakable
584 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
585 Details of this attack can be obtained from:
586 http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf
589 *) Rename the object files, i.e. give them other names than in previous
590 versions. Their names now include the name of the final product, as
591 well as its type mnemonic (bin, lib, shlib).
594 *) Added new option for 'openssl list', '-objects', which will display the
595 list of built in objects, i.e. OIDs with names.
598 *) Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
599 improves application performance by removing data copies and providing
600 applications with zero-copy system calls such as sendfile and splice.
603 Changes between 1.1.1a and 1.1.1b [xx XXX xxxx]
605 *) Change the info callback signals for the start and end of a post-handshake
606 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START
607 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get
608 confused by this and assume that a TLSv1.2 renegotiation has started. This
609 can break KeyUpdate handling. Instead we no longer signal the start and end
610 of a post handshake message exchange (although the messages themselves are
611 still signalled). This could break some applications that were expecting
612 the old signals. However without this KeyUpdate is not usable for many
616 Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
618 *) Timing vulnerability in DSA signature generation
620 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
621 timing side channel attack. An attacker could use variations in the signing
622 algorithm to recover the private key.
624 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
628 *) Timing vulnerability in ECDSA signature generation
630 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
631 timing side channel attack. An attacker could use variations in the signing
632 algorithm to recover the private key.
634 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
638 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
639 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
640 of two gigabytes and the error handling improved.
642 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
643 categorized as a normal bug, not a security issue, because the DRBG reseeds
644 automatically and is fully functional even without additional randomness
645 provided by the application.
647 Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
649 *) Add a new ClientHello callback. Provides a callback interface that gives
650 the application the ability to adjust the nascent SSL object at the
651 earliest stage of ClientHello processing, immediately after extensions have
652 been collected but before they have been processed. In particular, this
653 callback can adjust the supported TLS versions in response to the contents
657 *) Add SM2 base algorithm support.
660 *) s390x assembly pack: add (improved) hardware-support for the following
661 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
662 aes-cfb/cfb8, aes-ecb.
665 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
666 parameter is no longer accepted, as it leads to a corrupt table. NULL
667 pem_str is reserved for alias entries only.
670 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
671 step for prime curves. The new implementation is based on formulae from
672 differential addition-and-doubling in homogeneous projective coordinates
673 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
674 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
675 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
676 to work in projective coordinates.
677 [Billy Bob Brumley, Nicola Tuveri]
679 *) Change generating and checking of primes so that the error rate of not
680 being prime depends on the intended use based on the size of the input.
681 For larger primes this will result in more rounds of Miller-Rabin.
682 The maximal error rate for primes with more than 1080 bits is lowered
684 [Kurt Roeckx, Annie Yousar]
686 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
689 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
690 moving between systems, and to avoid confusion when a Windows build is
691 done with mingw vs with MSVC. For POSIX installs, there's still a
692 symlink or copy named 'tsget' to avoid that confusion as well.
695 *) Revert blinding in ECDSA sign and instead make problematic addition
696 length-invariant. Switch even to fixed-length Montgomery multiplication.
699 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
700 step for binary curves. The new implementation is based on formulae from
701 differential addition-and-doubling in mixed Lopez-Dahab projective
702 coordinates, modified to independently blind the operands.
703 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
705 *) Add a scaffold to optionally enhance the Montgomery ladder implementation
706 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
707 EC_METHODs to implement their own specialized "ladder step", to take
708 advantage of more favorable coordinate systems or more efficient
709 differential addition-and-doubling algorithms.
710 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
712 *) Modified the random device based seed sources to keep the relevant
713 file descriptors open rather than reopening them on each access.
714 This allows such sources to operate in a chroot() jail without
715 the associated device nodes being available. This behaviour can be
716 controlled using RAND_keep_random_devices_open().
719 *) Numerous side-channel attack mitigations have been applied. This may have
720 performance impacts for some algorithms for the benefit of improved
721 security. Specific changes are noted in this change log by their respective
725 *) AIX shared library support overhaul. Switch to AIX "natural" way of
726 handling shared libraries, which means collecting shared objects of
727 different versions and bitnesses in one common archive. This allows to
728 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
729 doesn't affect the way 3rd party applications are linked, only how
730 multi-version installation is managed.
733 *) Make ec_group_do_inverse_ord() more robust and available to other
734 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
735 mitigations are applied to the fallback BN_mod_inverse().
736 When using this function rather than BN_mod_inverse() directly, new
737 EC cryptosystem implementations are then safer-by-default.
740 *) Add coordinate blinding for EC_POINT and implement projective
741 coordinate blinding for generic prime curves as a countermeasure to
742 chosen point SCA attacks.
743 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
745 *) Add blinding to ECDSA and DSA signatures to protect against side channel
746 attacks discovered by Keegan Ryan (NCC Group).
749 *) Enforce checking in the pkeyutl command line app to ensure that the input
750 length does not exceed the maximum supported digest length when performing
751 a sign, verify or verifyrecover operation.
754 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
755 I/O in combination with something like select() or poll() will hang. This
756 can be turned off again using SSL_CTX_clear_mode().
757 Many applications do not properly handle non-application data records, and
758 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
759 around the problems in those applications, but can also break some.
760 It's recommended to read the manpages about SSL_read(), SSL_write(),
761 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
762 SSL_CTX_set_read_ahead() again.
765 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
766 now allow empty (zero character) pass phrases.
769 *) Apply blinding to binary field modular inversion and remove patent
770 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
773 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
774 binary and prime elliptic curves.
777 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
778 constant time fixed point multiplication.
781 *) Revise elliptic curve scalar multiplication with timing attack
782 defenses: ec_wNAF_mul redirects to a constant time implementation
783 when computing fixed point and variable point multiplication (which
784 in OpenSSL are mostly used with secret scalars in keygen, sign,
785 ECDH derive operations).
786 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida GarcÃa,
789 *) Updated CONTRIBUTING
792 *) Updated DRBG / RAND to request nonce and additional low entropy
793 randomness from the system.
794 [Matthias St. Pierre]
796 *) Updated 'openssl rehash' to use OpenSSL consistent default.
799 *) Moved the load of the ssl_conf module to libcrypto, which helps
800 loading engines that libssl uses before libssl is initialised.
803 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
806 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
807 [Ingo Schwarze, Rich Salz]
809 *) Added output of accepting IP address and port for 'openssl s_server'
812 *) Added a new API for TLSv1.3 ciphersuites:
813 SSL_CTX_set_ciphersuites()
814 SSL_set_ciphersuites()
817 *) Memory allocation failures consistently add an error to the error
821 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
822 in libcrypto when run as setuid/setgid.
825 *) Load any config file by default when libssl is used.
828 *) Added new public header file <openssl/rand_drbg.h> and documentation
829 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
830 [Matthias St. Pierre]
832 *) QNX support removed (cannot find contributors to get their approval
833 for the license change).
836 *) TLSv1.3 replay protection for early data has been implemented. See the
837 SSL_read_early_data() man page for further details.
840 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
841 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
842 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
843 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
844 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
845 configuration has been separated out. See the ciphers man page or the
846 SSL_CTX_set_ciphersuites() man page for more information.
849 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
850 in responder mode now supports the new "-multi" option, which
851 spawns the specified number of child processes to handle OCSP
852 requests. The "-timeout" option now also limits the OCSP
853 responder's patience to wait to receive the full client request
854 on a newly accepted connection. Child processes are respawned
855 as needed, and the CA index file is automatically reloaded
856 when changed. This makes it possible to run the "ocsp" responder
857 as a long-running service, making the OpenSSL CA somewhat more
858 feature-complete. In this mode, most diagnostic messages logged
859 after entering the event loop are logged via syslog(3) rather than
863 *) Added support for X448 and Ed448. Heavily based on original work by
867 *) Extend OSSL_STORE with capabilities to search and to narrow the set of
868 objects loaded. This adds the functions OSSL_STORE_expect() and
869 OSSL_STORE_find() as well as needed tools to construct searches and
870 get the search data out of them.
873 *) Support for TLSv1.3 added. Note that users upgrading from an earlier
874 version of OpenSSL should review their configuration settings to ensure
875 that they are still appropriate for TLSv1.3. For further information see:
876 https://wiki.openssl.org/index.php/TLS1.3
879 *) Grand redesign of the OpenSSL random generator
881 The default RAND method now utilizes an AES-CTR DRBG according to
882 NIST standard SP 800-90Ar1. The new random generator is essentially
883 a port of the default random generator from the OpenSSL FIPS 2.0
884 object module. It is a hybrid deterministic random bit generator
885 using an AES-CTR bit stream and which seeds and reseeds itself
886 automatically using trusted system entropy sources.
888 Some of its new features are:
889 o Support for multiple DRBG instances with seed chaining.
890 o The default RAND method makes use of a DRBG.
891 o There is a public and private DRBG instance.
892 o The DRBG instances are fork-safe.
893 o Keep all global DRBG instances on the secure heap if it is enabled.
894 o The public and private DRBG instance are per thread for lock free
896 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
898 *) Changed Configure so it only says what it does and doesn't dump
899 so much data. Instead, ./configdata.pm should be used as a script
900 to display all sorts of configuration data.
903 *) Added processing of "make variables" to Configure.
906 *) Added SHA512/224 and SHA512/256 algorithm support.
909 *) The last traces of Netware support, first removed in 1.1.0, have
913 *) Get rid of Makefile.shared, and in the process, make the processing
914 of certain files (rc.obj, or the .def/.map/.opt files produced from
915 the ordinal files) more visible and hopefully easier to trace and
916 debug (or make silent).
919 *) Make it possible to have environment variable assignments as
920 arguments to config / Configure.
923 *) Add multi-prime RSA (RFC 8017) support.
926 *) Add SM3 implemented according to GB/T 32905-2016
927 [ Jack Lloyd <jack.lloyd@ribose.com>,
928 Ronald Tse <ronald.tse@ribose.com>,
929 Erick Borsboom <erick.borsboom@ribose.com> ]
931 *) Add 'Maximum Fragment Length' TLS extension negotiation and support
932 as documented in RFC6066.
933 Based on a patch from Tomasz Moń
934 [Filipe Raimundo da Silva]
936 *) Add SM4 implemented according to GB/T 32907-2016.
937 [ Jack Lloyd <jack.lloyd@ribose.com>,
938 Ronald Tse <ronald.tse@ribose.com>,
939 Erick Borsboom <erick.borsboom@ribose.com> ]
941 *) Reimplement -newreq-nodes and ERR_error_string_n; the
942 original author does not agree with the license change.
945 *) Add ARIA AEAD TLS support.
948 *) Some macro definitions to support VS6 have been removed. Visual
949 Studio 6 has not worked since 1.1.0
952 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
953 without clearing the errors.
956 *) Add "atfork" functions. If building on a system that without
957 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
958 requirements. The RAND facility now uses/requires this.
964 *) The UI API becomes a permanent and integral part of libcrypto, i.e.
965 not possible to disable entirely. However, it's still possible to
966 disable the console reading UI method, UI_OpenSSL() (use UI_null()
969 To disable, configure with 'no-ui-console'. 'no-ui' is still
970 possible to use as an alias. Check at compile time with the
971 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
972 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
975 *) Add a STORE module, which implements a uniform and URI based reader of
976 stores that can contain keys, certificates, CRLs and numerous other
977 objects. The main API is loosely based on a few stdio functions,
978 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
979 OSSL_STORE_error and OSSL_STORE_close.
980 The implementation uses backends called "loaders" to implement arbitrary
981 URI schemes. There is one built in "loader" for the 'file' scheme.
984 *) Add devcrypto engine. This has been implemented against cryptodev-linux,
985 then adjusted to work on FreeBSD 8.4 as well.
986 Enable by configuring with 'enable-devcryptoeng'. This is done by default
987 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
990 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
991 util/mkerr.pl, which is adapted to allow those prefixes, leading to
992 error code calls like this:
994 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
996 With this change, we claim the namespaces OSSL and OPENSSL in a manner
997 that can be encoded in C. For the foreseeable future, this will only
999 [Richard Levitte and Tim Hudson]
1001 *) Removed BSD cryptodev engine.
1004 *) Add a build target 'build_all_generated', to build all generated files
1005 and only that. This can be used to prepare everything that requires
1006 things like perl for a system that lacks perl and then move everything
1007 to that system and do the rest of the build there.
1010 *) In the UI interface, make it possible to duplicate the user data. This
1011 can be used by engines that need to retain the data for a longer time
1012 than just the call where this user data is passed.
1015 *) Ignore the '-named_curve auto' value for compatibility of applications
1017 [Tomas Mraz <tmraz@fedoraproject.org>]
1019 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
1020 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
1021 alerts across multiple records (some of which could be empty). In practice
1022 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
1023 prohibts this altogether and other libraries (BoringSSL, NSS) do not
1024 support this at all. Supporting it adds significant complexity to the
1025 record layer, and its removal is unlikely to cause inter-operability
1029 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
1030 with Z. These are meant to replace LONG and ZLONG and to be size safe.
1031 The use of LONG and ZLONG is discouraged and scheduled for deprecation
1035 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
1036 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
1037 [Richard Levitte, Andy Polyakov]
1039 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
1043 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
1044 platform rather than 'mingw'.
1047 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
1048 success if they are asked to add an object which already exists
1049 in the store. This change cascades to other functions which load
1050 certificates and CRLs.
1053 *) x86_64 assembly pack: annotate code with DWARF CFI directives to
1054 facilitate stack unwinding even from assembly subroutines.
1057 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
1058 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
1061 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
1062 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
1063 which is the minimum version we support.
1066 *) Certificate time validation (X509_cmp_time) enforces stricter
1067 compliance with RFC 5280. Fractional seconds and timezone offsets
1068 are no longer allowed.
1071 *) Add support for ARIA
1074 *) s_client will now send the Server Name Indication (SNI) extension by
1075 default unless the new "-noservername" option is used. The server name is
1076 based on the host provided to the "-connect" option unless overridden by
1077 using "-servername".
1080 *) Add support for SipHash
1083 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
1084 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
1085 prevent issues where no progress is being made and the peer continually
1086 sends unrecognised record types, using up resources processing them.
1089 *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
1090 using the algorithm defined in
1091 https://www.akkadia.org/drepper/SHA-crypt.txt
1094 *) Heartbeat support has been removed; the ABI is changed for now.
1095 [Richard Levitte, Rich Salz]
1097 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
1100 *) The RSA "null" method, which was partially supported to avoid patent
1101 issues, has been replaced to always returns NULL.
1105 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
1107 *) Client DoS due to large DH parameter
1109 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
1110 malicious server can send a very large prime value to the client. This will
1111 cause the client to spend an unreasonably long period of time generating a
1112 key for this prime resulting in a hang until the client has finished. This
1113 could be exploited in a Denial Of Service attack.
1115 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
1119 *) Cache timing vulnerability in RSA Key Generation
1121 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
1122 a cache timing side channel attack. An attacker with sufficient access to
1123 mount cache timing attacks during the RSA key generation process could
1124 recover the private key.
1126 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
1127 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
1131 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
1132 parameter is no longer accepted, as it leads to a corrupt table. NULL
1133 pem_str is reserved for alias entries only.
1136 *) Revert blinding in ECDSA sign and instead make problematic addition
1137 length-invariant. Switch even to fixed-length Montgomery multiplication.
1140 *) Change generating and checking of primes so that the error rate of not
1141 being prime depends on the intended use based on the size of the input.
1142 For larger primes this will result in more rounds of Miller-Rabin.
1143 The maximal error rate for primes with more than 1080 bits is lowered
1145 [Kurt Roeckx, Annie Yousar]
1147 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
1150 *) Add blinding to ECDSA and DSA signatures to protect against side channel
1151 attacks discovered by Keegan Ryan (NCC Group).
1154 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
1155 now allow empty (zero character) pass phrases.
1158 *) Certificate time validation (X509_cmp_time) enforces stricter
1159 compliance with RFC 5280. Fractional seconds and timezone offsets
1160 are no longer allowed.
1163 *) Fixed a text canonicalisation bug in CMS
1165 Where a CMS detached signature is used with text content the text goes
1166 through a canonicalisation process first prior to signing or verifying a
1167 signature. This process strips trailing space at the end of lines, converts
1168 line terminators to CRLF and removes additional trailing line terminators
1169 at the end of a file. A bug in the canonicalisation process meant that
1170 some characters, such as form-feed, were incorrectly treated as whitespace
1171 and removed. This is contrary to the specification (RFC5485). This fix
1172 could mean that detached text data signed with an earlier version of
1173 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
1174 signed with a fixed OpenSSL may fail to verify with an earlier version of
1175 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
1176 and use the "-binary" flag (for the "cms" command line application) or set
1177 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
1180 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
1182 *) Constructed ASN.1 types with a recursive definition could exceed the stack
1184 Constructed ASN.1 types with a recursive definition (such as can be found
1185 in PKCS7) could eventually exceed the stack given malicious input with
1186 excessive recursion. This could result in a Denial Of Service attack. There
1187 are no such structures used within SSL/TLS that come from untrusted sources
1188 so this is considered safe.
1190 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
1195 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
1197 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
1198 effectively reduced to only comparing the least significant bit of each
1199 byte. This allows an attacker to forge messages that would be considered as
1200 authenticated in an amount of tries lower than that guaranteed by the
1201 security claims of the scheme. The module can only be compiled by the
1202 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
1204 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
1209 *) Add a build target 'build_all_generated', to build all generated files
1210 and only that. This can be used to prepare everything that requires
1211 things like perl for a system that lacks perl and then move everything
1212 to that system and do the rest of the build there.
1215 *) Backport SSL_OP_NO_RENGOTIATION
1217 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
1218 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
1219 changes this is no longer possible in 1.1.0. Therefore the new
1220 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
1221 1.1.0 to provide equivalent functionality.
1223 Note that if an application built against 1.1.0h headers (or above) is run
1224 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
1225 accepted but nothing will happen, i.e. renegotiation will not be prevented.
1228 *) Removed the OS390-Unix config target. It relied on a script that doesn't
1232 *) rsaz_1024_mul_avx2 overflow bug on x86_64
1234 There is an overflow bug in the AVX2 Montgomery multiplication procedure
1235 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
1236 Analysis suggests that attacks against RSA and DSA as a result of this
1237 defect would be very difficult to perform and are not believed likely.
1238 Attacks against DH1024 are considered just feasible, because most of the
1239 work necessary to deduce information about a private key may be performed
1240 offline. The amount of resources required for such an attack would be
1241 significant. However, for an attack on TLS to be meaningful, the server
1242 would have to share the DH1024 private key among multiple clients, which is
1243 no longer an option since CVE-2016-0701.
1245 This only affects processors that support the AVX2 but not ADX extensions
1246 like Intel Haswell (4th generation).
1248 This issue was reported to OpenSSL by David Benjamin (Google). The issue
1249 was originally found via the OSS-Fuzz project.
1253 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
1255 *) bn_sqrx8x_internal carry bug on x86_64
1257 There is a carry propagating bug in the x86_64 Montgomery squaring
1258 procedure. No EC algorithms are affected. Analysis suggests that attacks
1259 against RSA and DSA as a result of this defect would be very difficult to
1260 perform and are not believed likely. Attacks against DH are considered just
1261 feasible (although very difficult) because most of the work necessary to
1262 deduce information about a private key may be performed offline. The amount
1263 of resources required for such an attack would be very significant and
1264 likely only accessible to a limited number of attackers. An attacker would
1265 additionally need online access to an unpatched system using the target
1266 private key in a scenario with persistent DH parameters and a private
1267 key that is shared between multiple clients.
1269 This only affects processors that support the BMI1, BMI2 and ADX extensions
1270 like Intel Broadwell (5th generation) and later or AMD Ryzen.
1272 This issue was reported to OpenSSL by the OSS-Fuzz project.
1276 *) Malformed X.509 IPAddressFamily could cause OOB read
1278 If an X.509 certificate has a malformed IPAddressFamily extension,
1279 OpenSSL could do a one-byte buffer overread. The most likely result
1280 would be an erroneous display of the certificate in text format.
1282 This issue was reported to OpenSSL by the OSS-Fuzz project.
1286 Changes between 1.1.0e and 1.1.0f [25 May 2017]
1288 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
1289 platform rather than 'mingw'.
1292 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
1293 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
1294 which is the minimum version we support.
1297 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
1299 *) Encrypt-Then-Mac renegotiation crash
1301 During a renegotiation handshake if the Encrypt-Then-Mac extension is
1302 negotiated where it was not in the original handshake (or vice-versa) then
1303 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
1304 and servers are affected.
1306 This issue was reported to OpenSSL by Joe Orton (Red Hat).
1310 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
1312 *) Truncated packet could crash via OOB read
1314 If one side of an SSL/TLS path is running on a 32-bit host and a specific
1315 cipher is being used, then a truncated packet can cause that host to
1316 perform an out-of-bounds read, usually resulting in a crash.
1318 This issue was reported to OpenSSL by Robert Święcki of Google.
1322 *) Bad (EC)DHE parameters cause a client crash
1324 If a malicious server supplies bad parameters for a DHE or ECDHE key
1325 exchange then this can result in the client attempting to dereference a
1326 NULL pointer leading to a client crash. This could be exploited in a Denial
1329 This issue was reported to OpenSSL by Guido Vranken.
1333 *) BN_mod_exp may produce incorrect results on x86_64
1335 There is a carry propagating bug in the x86_64 Montgomery squaring
1336 procedure. No EC algorithms are affected. Analysis suggests that attacks
1337 against RSA and DSA as a result of this defect would be very difficult to
1338 perform and are not believed likely. Attacks against DH are considered just
1339 feasible (although very difficult) because most of the work necessary to
1340 deduce information about a private key may be performed offline. The amount
1341 of resources required for such an attack would be very significant and
1342 likely only accessible to a limited number of attackers. An attacker would
1343 additionally need online access to an unpatched system using the target
1344 private key in a scenario with persistent DH parameters and a private
1345 key that is shared between multiple clients. For example this can occur by
1346 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
1347 similar to CVE-2015-3193 but must be treated as a separate problem.
1349 This issue was reported to OpenSSL by the OSS-Fuzz project.
1353 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
1355 *) ChaCha20/Poly1305 heap-buffer-overflow
1357 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
1358 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
1359 crash. This issue is not considered to be exploitable beyond a DoS.
1361 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
1365 *) CMS Null dereference
1367 Applications parsing invalid CMS structures can crash with a NULL pointer
1368 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
1369 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
1370 structure callback if an attempt is made to free certain invalid encodings.
1371 Only CHOICE structures using a callback which do not handle NULL value are
1374 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
1378 *) Montgomery multiplication may produce incorrect results
1380 There is a carry propagating bug in the Broadwell-specific Montgomery
1381 multiplication procedure that handles input lengths divisible by, but
1382 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
1383 and DH private keys are impossible. This is because the subroutine in
1384 question is not used in operations with the private key itself and an input
1385 of the attacker's direct choice. Otherwise the bug can manifest itself as
1386 transient authentication and key negotiation failures or reproducible
1387 erroneous outcome of public-key operations with specially crafted input.
1388 Among EC algorithms only Brainpool P-512 curves are affected and one
1389 presumably can attack ECDH key negotiation. Impact was not analyzed in
1390 detail, because pre-requisites for attack are considered unlikely. Namely
1391 multiple clients have to choose the curve in question and the server has to
1392 share the private key among them, neither of which is default behaviour.
1393 Even then only clients that chose the curve will be affected.
1395 This issue was publicly reported as transient failures and was not
1396 initially recognized as a security issue. Thanks to Richard Morgan for
1397 providing reproducible case.
1401 *) Removed automatic addition of RPATH in shared libraries and executables,
1402 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
1405 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
1407 *) Fix Use After Free for large message sizes
1409 The patch applied to address CVE-2016-6307 resulted in an issue where if a
1410 message larger than approx 16k is received then the underlying buffer to
1411 store the incoming message is reallocated and moved. Unfortunately a
1412 dangling pointer to the old location is left which results in an attempt to
1413 write to the previously freed location. This is likely to result in a
1414 crash, however it could potentially lead to execution of arbitrary code.
1416 This issue only affects OpenSSL 1.1.0a.
1418 This issue was reported to OpenSSL by Robert Święcki.
1422 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
1424 *) OCSP Status Request extension unbounded memory growth
1426 A malicious client can send an excessively large OCSP Status Request
1427 extension. If that client continually requests renegotiation, sending a
1428 large OCSP Status Request extension each time, then there will be unbounded
1429 memory growth on the server. This will eventually lead to a Denial Of
1430 Service attack through memory exhaustion. Servers with a default
1431 configuration are vulnerable even if they do not support OCSP. Builds using
1432 the "no-ocsp" build time option are not affected.
1434 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1438 *) SSL_peek() hang on empty record
1440 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
1441 sends an empty record. This could be exploited by a malicious peer in a
1442 Denial Of Service attack.
1444 This issue was reported to OpenSSL by Alex Gaynor.
1448 *) Excessive allocation of memory in tls_get_message_header() and
1449 dtls1_preprocess_fragment()
1451 A (D)TLS message includes 3 bytes for its length in the header for the
1452 message. This would allow for messages up to 16Mb in length. Messages of
1453 this length are excessive and OpenSSL includes a check to ensure that a
1454 peer is sending reasonably sized messages in order to avoid too much memory
1455 being consumed to service a connection. A flaw in the logic of version
1456 1.1.0 means that memory for the message is allocated too early, prior to
1457 the excessive message length check. Due to way memory is allocated in
1458 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
1459 to service a connection. This could lead to a Denial of Service through
1460 memory exhaustion. However, the excessive message length check still takes
1461 place, and this would cause the connection to immediately fail. Assuming
1462 that the application calls SSL_free() on the failed connection in a timely
1463 manner then the 21Mb of allocated memory will then be immediately freed
1464 again. Therefore the excessive memory allocation will be transitory in
1465 nature. This then means that there is only a security impact if:
1467 1) The application does not call SSL_free() in a timely manner in the event
1468 that the connection fails
1470 2) The application is working in a constrained environment where there is
1471 very little free memory
1473 3) The attacker initiates multiple connection attempts such that there are
1474 multiple connections in a state where memory has been allocated for the
1475 connection; SSL_free() has not yet been called; and there is insufficient
1476 memory to service the multiple requests.
1478 Except in the instance of (1) above any Denial Of Service is likely to be
1479 transitory because as soon as the connection fails the memory is
1480 subsequently freed again in the SSL_free() call. However there is an
1481 increased risk during this period of application crashes due to the lack of
1482 memory - which would then mean a more serious Denial of Service.
1484 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
1485 (CVE-2016-6307 and CVE-2016-6308)
1488 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
1489 had to be removed. Primary reason is that vendor assembler can't
1490 assemble our modules with -KPIC flag. As result it, assembly
1491 support, was not even available as option. But its lack means
1492 lack of side-channel resistant code, which is incompatible with
1493 security by todays standards. Fortunately gcc is readily available
1494 prepackaged option, which we firmly point at...
1497 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
1499 *) Windows command-line tool supports UTF-8 opt-in option for arguments
1500 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
1501 (to any value) allows Windows user to access PKCS#12 file generated
1502 with Windows CryptoAPI and protected with non-ASCII password, as well
1503 as files generated under UTF-8 locale on Linux also protected with
1507 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
1508 have been disabled by default and removed from DEFAULT, just like RC4.
1509 See the RC4 item below to re-enable both.
1512 *) The method for finding the storage location for the Windows RAND seed file
1513 has changed. First we check %RANDFILE%. If that is not set then we check
1514 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
1515 all else fails we fall back to C:\.
1518 *) The EVP_EncryptUpdate() function has had its return type changed from void
1519 to int. A return of 0 indicates and error while a return of 1 indicates
1523 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
1524 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
1525 off the constant time implementation for RSA, DSA and DH have been made
1526 no-ops and deprecated.
1529 *) Windows RAND implementation was simplified to only get entropy by
1530 calling CryptGenRandom(). Various other RAND-related tickets
1532 [Joseph Wylie Yandle, Rich Salz]
1534 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
1535 and OPENSSL_LH_, respectively. The old names are available
1536 with API compatibility. They new names are now completely documented.
1539 *) Unify TYPE_up_ref(obj) methods signature.
1540 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
1541 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
1542 int (instead of void) like all others TYPE_up_ref() methods.
1543 So now these methods also check the return value of CRYPTO_atomic_add(),
1544 and the validity of object reference counter.
1545 [fdasilvayy@gmail.com]
1547 *) With Windows Visual Studio builds, the .pdb files are installed
1548 alongside the installed libraries and executables. For a static
1549 library installation, ossl_static.pdb is the associate compiler
1550 generated .pdb file to be used when linking programs.
1553 *) Remove openssl.spec. Packaging files belong with the packagers.
1556 *) Automatic Darwin/OSX configuration has had a refresh, it will now
1557 recognise x86_64 architectures automatically. You can still decide
1558 to build for a different bitness with the environment variable
1559 KERNEL_BITS (can be 32 or 64), for example:
1561 KERNEL_BITS=32 ./config
1565 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
1566 256 bit AES and HMAC with SHA256.
1569 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
1572 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
1575 *) To enable users to have their own config files and build file templates,
1576 Configure looks in the directory indicated by the environment variable
1577 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
1578 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
1579 name and is used as is.
1582 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
1583 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
1584 X509_CERT_FILE_CTX was removed.
1587 *) "shared" builds are now the default. To create only static libraries use
1588 the "no-shared" Configure option.
1591 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
1592 All of these option have not worked for some while and are fundamental
1596 *) Make various cleanup routines no-ops and mark them as deprecated. Most
1597 global cleanup functions are no longer required because they are handled
1598 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
1599 Explicitly de-initing can cause problems (e.g. where a library that uses
1600 OpenSSL de-inits, but an application is still using it). The affected
1601 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
1602 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
1603 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
1604 COMP_zlib_cleanup().
1607 *) --strict-warnings no longer enables runtime debugging options
1608 such as REF_DEBUG. Instead, debug options are automatically
1609 enabled with '--debug' builds.
1610 [Andy Polyakov, Emilia Käsper]
1612 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
1613 have been moved out of the public header files. New functions for managing
1614 these have been added.
1617 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
1618 objects have been moved out of the public header files. New
1619 functions for managing these have been added.
1622 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
1623 have been moved out of the public header files. New functions for managing
1624 these have been added.
1627 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
1628 moved out of the public header files. New functions for managing these
1632 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
1635 *) Removed the mk1mf build scripts.
1638 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
1639 it is always safe to #include a header now.
1642 *) Removed the aged BC-32 config and all its supporting scripts
1645 *) Removed support for Ultrix, Netware, and OS/2.
1648 *) Add support for HKDF.
1649 [Alessandro Ghedini]
1651 *) Add support for blake2b and blake2s
1654 *) Added support for "pipelining". Ciphers that have the
1655 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
1656 encryptions/decryptions simultaneously. There are currently no built-in
1657 ciphers with this property but the expectation is that engines will be able
1658 to offer it to significantly improve throughput. Support has been extended
1659 into libssl so that multiple records for a single connection can be
1660 processed in one go (for >=TLS 1.1).
1663 *) Added the AFALG engine. This is an async capable engine which is able to
1664 offload work to the Linux kernel. In this initial version it only supports
1665 AES128-CBC. The kernel must be version 4.1.0 or greater.
1668 *) OpenSSL now uses a new threading API. It is no longer necessary to
1669 set locking callbacks to use OpenSSL in a multi-threaded environment. There
1670 are two supported threading models: pthreads and windows threads. It is
1671 also possible to configure OpenSSL at compile time for "no-threads". The
1672 old threading API should no longer be used. The functions have been
1673 replaced with "no-op" compatibility macros.
1674 [Alessandro Ghedini, Matt Caswell]
1676 *) Modify behavior of ALPN to invoke callback after SNI/servername
1677 callback, such that updates to the SSL_CTX affect ALPN.
1680 *) Add SSL_CIPHER queries for authentication and key-exchange.
1683 *) Changes to the DEFAULT cipherlist:
1684 - Prefer (EC)DHE handshakes over plain RSA.
1685 - Prefer AEAD ciphers over legacy ciphers.
1686 - Prefer ECDSA over RSA when both certificates are available.
1687 - Prefer TLSv1.2 ciphers/PRF.
1688 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
1692 *) Change the ECC default curve list to be this, in order: x25519,
1693 secp256r1, secp521r1, secp384r1.
1696 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
1697 disabled by default. They can be re-enabled using the
1698 enable-weak-ssl-ciphers option to Configure.
1701 *) If the server has ALPN configured, but supports no protocols that the
1702 client advertises, send a fatal "no_application_protocol" alert.
1703 This behaviour is SHALL in RFC 7301, though it isn't universally
1704 implemented by other servers.
1707 *) Add X25519 support.
1708 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
1709 for public and private key encoding using the format documented in
1710 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
1711 key generation and key derivation.
1713 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
1717 *) Deprecate SRP_VBASE_get_by_user.
1718 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1719 In order to fix an unavoidable memory leak (CVE-2016-0798),
1720 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
1721 seed, even if the seed is configured.
1723 Users should use SRP_VBASE_get1_by_user instead. Note that in
1724 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1725 also that even though configuring the SRP seed attempts to hide
1726 invalid usernames by continuing the handshake with fake
1727 credentials, this behaviour is not constant time and no strong
1728 guarantees are made that the handshake is indistinguishable from
1729 that of a valid user.
1732 *) Configuration change; it's now possible to build dynamic engines
1733 without having to build shared libraries and vice versa. This
1734 only applies to the engines in engines/, those in crypto/engine/
1735 will always be built into libcrypto (i.e. "static").
1737 Building dynamic engines is enabled by default; to disable, use
1738 the configuration option "disable-dynamic-engine".
1740 The only requirements for building dynamic engines are the
1741 presence of the DSO module and building with position independent
1742 code, so they will also automatically be disabled if configuring
1743 with "disable-dso" or "disable-pic".
1745 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
1746 are also taken away from openssl/opensslconf.h, as they are
1750 *) Configuration change; if there is a known flag to compile
1751 position independent code, it will always be applied on the
1752 libcrypto and libssl object files, and never on the application
1753 object files. This means other libraries that use routines from
1754 libcrypto / libssl can be made into shared libraries regardless
1755 of how OpenSSL was configured.
1757 If this isn't desirable, the configuration options "disable-pic"
1758 or "no-pic" can be used to disable the use of PIC. This will
1759 also disable building shared libraries and dynamic engines.
1762 *) Removed JPAKE code. It was experimental and has no wide use.
1765 *) The INSTALL_PREFIX Makefile variable has been renamed to
1766 DESTDIR. That makes for less confusion on what this variable
1767 is for. Also, the configuration option --install_prefix is
1771 *) Heartbeat for TLS has been removed and is disabled by default
1772 for DTLS; configure with enable-heartbeats. Code that uses the
1773 old #define's might need to be updated.
1774 [Emilia Käsper, Rich Salz]
1776 *) Rename REF_CHECK to REF_DEBUG.
1779 *) New "unified" build system
1781 The "unified" build system is aimed to be a common system for all
1782 platforms we support. With it comes new support for VMS.
1784 This system builds supports building in a different directory tree
1785 than the source tree. It produces one Makefile (for unix family
1786 or lookalikes), or one descrip.mms (for VMS).
1788 The source of information to make the Makefile / descrip.mms is
1789 small files called 'build.info', holding the necessary
1790 information for each directory with source to compile, and a
1791 template in Configurations, like unix-Makefile.tmpl or
1794 With this change, the library names were also renamed on Windows
1795 and on VMS. They now have names that are closer to the standard
1796 on Unix, and include the major version number, and in certain
1797 cases, the architecture they are built for. See "Notes on shared
1798 libraries" in INSTALL.
1800 We rely heavily on the perl module Text::Template.
1803 *) Added support for auto-initialisation and de-initialisation of the library.
1804 OpenSSL no longer requires explicit init or deinit routines to be called,
1805 except in certain circumstances. See the OPENSSL_init_crypto() and
1806 OPENSSL_init_ssl() man pages for further information.
1809 *) The arguments to the DTLSv1_listen function have changed. Specifically the
1810 "peer" argument is now expected to be a BIO_ADDR object.
1812 *) Rewrite of BIO networking library. The BIO library lacked consistent
1813 support of IPv6, and adding it required some more extensive
1814 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
1815 which hold all types of addresses and chains of address information.
1816 It also introduces a new API, with functions like BIO_socket,
1817 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
1818 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
1819 have been adapted accordingly.
1822 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
1826 *) CRIME protection: disable compression by default, even if OpenSSL is
1827 compiled with zlib enabled. Applications can still enable compression
1828 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
1829 using the SSL_CONF library to configure compression.
1832 *) The signature of the session callback configured with
1833 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
1834 was explicitly marked as 'const unsigned char*' instead of
1838 *) Always DPURIFY. Remove the use of uninitialized memory in the
1839 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
1842 *) Removed many obsolete configuration items, including
1843 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
1844 MD2_CHAR, MD2_INT, MD2_LONG
1846 IDEA_SHORT, IDEA_LONG
1847 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
1848 [Rich Salz, with advice from Andy Polyakov]
1850 *) Many BN internals have been moved to an internal header file.
1851 [Rich Salz with help from Andy Polyakov]
1853 *) Configuration and writing out the results from it has changed.
1854 Files such as Makefile include/openssl/opensslconf.h and are now
1855 produced through general templates, such as Makefile.in and
1856 crypto/opensslconf.h.in and some help from the perl module
1859 Also, the center of configuration information is no longer
1860 Makefile. Instead, Configure produces a perl module in
1861 configdata.pm which holds most of the config data (in the hash
1862 table %config), the target data that comes from the target
1863 configuration in one of the Configurations/*.conf files (in
1867 *) To clarify their intended purposes, the Configure options
1868 --prefix and --openssldir change their semantics, and become more
1869 straightforward and less interdependent.
1871 --prefix shall be used exclusively to give the location INSTALLTOP
1872 where programs, scripts, libraries, include files and manuals are
1873 going to be installed. The default is now /usr/local.
1875 --openssldir shall be used exclusively to give the default
1876 location OPENSSLDIR where certificates, private keys, CRLs are
1877 managed. This is also where the default openssl.cnf gets
1879 If the directory given with this option is a relative path, the
1880 values of both the --prefix value and the --openssldir value will
1881 be combined to become OPENSSLDIR.
1882 The default for --openssldir is INSTALLTOP/ssl.
1884 Anyone who uses --openssldir to specify where OpenSSL is to be
1885 installed MUST change to use --prefix instead.
1888 *) The GOST engine was out of date and therefore it has been removed. An up
1889 to date GOST engine is now being maintained in an external repository.
1890 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
1891 support for GOST ciphersuites (these are only activated if a GOST engine
1895 *) EGD is no longer supported by default; use enable-egd when
1897 [Ben Kaduk and Rich Salz]
1899 *) The distribution now has Makefile.in files, which are used to
1900 create Makefile's when Configure is run. *Configure must be run
1901 before trying to build now.*
1904 *) The return value for SSL_CIPHER_description() for error conditions
1908 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
1910 Obtaining and performing DNSSEC validation of TLSA records is
1911 the application's responsibility. The application provides
1912 the TLSA records of its choice to OpenSSL, and these are then
1913 used to authenticate the peer.
1915 The TLSA records need not even come from DNS. They can, for
1916 example, be used to implement local end-entity certificate or
1917 trust-anchor "pinning", where the "pin" data takes the form
1918 of TLSA records, which can augment or replace verification
1919 based on the usual WebPKI public certification authorities.
1922 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
1923 continues to support deprecated interfaces in default builds.
1924 However, applications are strongly advised to compile their
1925 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
1926 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
1927 or the 1.1.0 releases.
1929 In environments in which all applications have been ported to
1930 not use any deprecated interfaces OpenSSL's Configure script
1931 should be used with the --api=1.1.0 option to entirely remove
1932 support for the deprecated features from the library and
1933 unconditionally disable them in the installed headers.
1934 Essentially the same effect can be achieved with the "no-deprecated"
1935 argument to Configure, except that this will always restrict
1936 the build to just the latest API, rather than a fixed API
1939 As applications are ported to future revisions of the API,
1940 they should update their compile-time OPENSSL_API_COMPAT define
1941 accordingly, but in most cases should be able to continue to
1942 compile with later releases.
1944 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
1945 0x10000000L and 0x00908000L, respectively. However those
1946 versions did not support the OPENSSL_API_COMPAT feature, and
1947 so applications are not typically tested for explicit support
1948 of just the undeprecated features of either release.
1951 *) Add support for setting the minimum and maximum supported protocol.
1952 It can bet set via the SSL_set_min_proto_version() and
1953 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
1954 MaxProtocol. It's recommended to use the new APIs to disable
1955 protocols instead of disabling individual protocols using
1956 SSL_set_options() or SSL_CONF's Protocol. This change also
1957 removes support for disabling TLS 1.2 in the OpenSSL TLS
1958 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
1961 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
1964 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
1965 and integrates ECDSA and ECDH functionality into EC. Implementations can
1966 now redirect key generation and no longer need to convert to or from
1969 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
1970 include the ec.h header file instead.
1973 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
1974 ciphers who are no longer supported and drops support the ephemeral RSA key
1975 exchange. The LOW ciphers currently doesn't have any ciphers in it.
1978 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
1979 opaque. For HMAC_CTX, the following constructors and destructors
1982 HMAC_CTX *HMAC_CTX_new(void);
1983 void HMAC_CTX_free(HMAC_CTX *ctx);
1985 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
1986 destroy such methods has been added. See EVP_MD_meth_new(3) and
1987 EVP_CIPHER_meth_new(3) for documentation.
1990 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
1991 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
1992 EVP_MD_CTX_reset() should be called instead to reinitialise
1993 an already created structure.
1994 2) For consistency with the majority of our object creators and
1995 destructors, EVP_MD_CTX_(create|destroy) were renamed to
1996 EVP_MD_CTX_(new|free). The old names are retained as macros
1997 for deprecated builds.
2000 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
2001 cryptographic operations to be performed asynchronously as long as an
2002 asynchronous capable engine is used. See the ASYNC_start_job() man page for
2003 further details. Libssl has also had this capability integrated with the
2004 introduction of the new mode SSL_MODE_ASYNC and associated error
2005 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
2006 pages. This work was developed in partnership with Intel Corp.
2009 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
2010 always enabled now. If you want to disable the support you should
2011 exclude it using the list of supported ciphers. This also means that the
2012 "-no_ecdhe" option has been removed from s_server.
2015 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
2016 SSL_{CTX_}set1_curves() which can set a list.
2019 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
2020 curve you want to support using SSL_{CTX_}set1_curves().
2023 *) State machine rewrite. The state machine code has been significantly
2024 refactored in order to remove much duplication of code and solve issues
2025 with the old code (see ssl/statem/README for further details). This change
2026 does have some associated API changes. Notably the SSL_state() function
2027 has been removed and replaced by SSL_get_state which now returns an
2028 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
2029 altogether. The previous handshake states defined in ssl.h and ssl3.h have
2033 *) All instances of the string "ssleay" in the public API were replaced
2034 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
2035 Some error codes related to internal RSA_eay API's were renamed.
2038 *) The demo files in crypto/threads were moved to demo/threads.
2041 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
2043 [Matt Caswell, Rich Salz]
2045 *) New ASN.1 embed macro.
2047 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
2048 structure is not allocated: it is part of the parent. That is instead of
2056 This reduces memory fragmentation and make it impossible to accidentally
2057 set a mandatory field to NULL.
2059 This currently only works for some fields specifically a SEQUENCE, CHOICE,
2060 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
2061 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
2065 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
2068 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
2069 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
2070 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
2071 DES and RC4 ciphersuites.
2074 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2075 This changes the decoding behaviour for some invalid messages,
2076 though the change is mostly in the more lenient direction, and
2077 legacy behaviour is preserved as much as possible.
2080 *) Fix no-stdio build.
2081 [ David Woodhouse <David.Woodhouse@intel.com> and also
2082 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
2084 *) New testing framework
2085 The testing framework has been largely rewritten and is now using
2086 perl and the perl modules Test::Harness and an extended variant of
2087 Test::More called OpenSSL::Test to do its work. All test scripts in
2088 test/ have been rewritten into test recipes, and all direct calls to
2089 executables in test/Makefile have become individual recipes using the
2090 simplified testing OpenSSL::Test::Simple.
2092 For documentation on our testing modules, do:
2094 perldoc test/testlib/OpenSSL/Test/Simple.pm
2095 perldoc test/testlib/OpenSSL/Test.pm
2099 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
2100 are used; the latter aborts on memory leaks (usually checked on exit).
2101 Some undocumented "set malloc, etc., hooks" functions were removed
2102 and others were changed. All are now documented.
2105 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2107 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2109 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
2110 from RFC4279, RFC4785, RFC5487, RFC5489.
2112 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
2113 original RSA_PSK patch.
2116 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
2117 era flag was never set throughout the codebase (only read). Also removed
2118 SSL3_FLAGS_POP_BUFFER which was only used if
2119 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
2122 *) Changed the default name options in the "ca", "crl", "req" and "x509"
2123 to be "oneline" instead of "compat".
2126 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
2127 not aware of clients that still exhibit this bug, and the workaround
2128 hasn't been working properly for a while.
2131 *) The return type of BIO_number_read() and BIO_number_written() as well as
2132 the corresponding num_read and num_write members in the BIO structure has
2133 changed from unsigned long to uint64_t. On platforms where an unsigned
2134 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
2138 *) Given the pervasive nature of TLS extensions it is inadvisable to run
2139 OpenSSL without support for them. It also means that maintaining
2140 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
2141 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
2144 *) Removed support for the two export grade static DH ciphersuites
2145 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
2146 were newly added (along with a number of other static DH ciphersuites) to
2147 1.0.2. However the two export ones have *never* worked since they were
2148 introduced. It seems strange in any case to be adding new export
2149 ciphersuites, and given "logjam" it also does not seem correct to fix them.
2152 *) Version negotiation has been rewritten. In particular SSLv23_method(),
2153 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
2154 and turned into macros which simply call the new preferred function names
2155 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
2156 should use the new names instead. Also as part of this change the ssl23.h
2157 header file has been removed.
2160 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
2161 code and the associated standard is no longer considered fit-for-purpose.
2164 *) RT2547 was closed. When generating a private key, try to make the
2165 output file readable only by the owner. This behavior change might
2166 be noticeable when interacting with other software.
2168 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
2172 *) Added HTTP GET support to the ocsp command.
2175 *) Changed default digest for the dgst and enc commands from MD5 to
2179 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
2182 *) Added support for TLS extended master secret from
2183 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
2184 initial patch which was a great help during development.
2187 *) All libssl internal structures have been removed from the public header
2188 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
2189 now redundant). Users should not attempt to access internal structures
2190 directly. Instead they should use the provided API functions.
2193 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
2194 Access to deprecated functions can be re-enabled by running config with
2195 "enable-deprecated". In addition applications wishing to use deprecated
2196 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
2197 will, by default, disable some transitive includes that previously existed
2198 in the header files (e.g. ec.h will no longer, by default, include bn.h)
2201 *) Added support for OCB mode. OpenSSL has been granted a patent license
2202 compatible with the OpenSSL license for use of OCB. Details are available
2203 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
2204 for OCB can be removed by calling config with no-ocb.
2207 *) SSLv2 support has been removed. It still supports receiving a SSLv2
2208 compatible client hello.
2211 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
2212 done while fixing the error code for the key-too-small case.
2213 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
2215 *) CA.sh has been removed; use CA.pl instead.
2218 *) Removed old DES API.
2221 *) Remove various unsupported platforms:
2227 Sinix/ReliantUNIX RM400
2232 16-bit platforms such as WIN16
2235 *) Clean up OPENSSL_NO_xxx #define's
2236 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
2237 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
2238 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
2239 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
2240 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
2241 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
2242 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
2243 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
2244 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
2245 Remove MS_STATIC; it's a relic from platforms <32 bits.
2248 *) Cleaned up dead code
2249 Remove all but one '#ifdef undef' which is to be looked at.
2252 *) Clean up calling of xxx_free routines.
2253 Just like free(), fix most of the xxx_free routines to accept
2254 NULL. Remove the non-null checks from callers. Save much code.
2257 *) Add secure heap for storage of private keys (when possible).
2258 Add BIO_s_secmem(), CBIGNUM, etc.
2259 Contributed by Akamai Technologies under our Corporate CLA.
2262 *) Experimental support for a new, fast, unbiased prime candidate generator,
2263 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
2264 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
2266 *) New output format NSS in the sess_id command line tool. This allows
2267 exporting the session id and the master key in NSS keylog format.
2268 [Martin Kaiser <martin@kaiser.cx>]
2270 *) Harmonize version and its documentation. -f flag is used to display
2272 [mancha <mancha1@zoho.com>]
2274 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
2275 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
2276 [mancha <mancha1@zoho.com>]
2278 *) Fix some double frees. These are not thought to be exploitable.
2279 [mancha <mancha1@zoho.com>]
2281 *) A missing bounds check in the handling of the TLS heartbeat extension
2282 can be used to reveal up to 64k of memory to a connected client or
2285 Thanks for Neel Mehta of Google Security for discovering this bug and to
2286 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
2287 preparing the fix (CVE-2014-0160)
2288 [Adam Langley, Bodo Moeller]
2290 *) Fix for the attack described in the paper "Recovering OpenSSL
2291 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
2292 by Yuval Yarom and Naomi Benger. Details can be obtained from:
2293 http://eprint.iacr.org/2014/140
2295 Thanks to Yuval Yarom and Naomi Benger for discovering this
2296 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
2297 [Yuval Yarom and Naomi Benger]
2299 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2300 this fixes a limitation in previous versions of OpenSSL.
2303 *) Experimental encrypt-then-mac support.
2305 Experimental support for encrypt then mac from
2306 draft-gutmann-tls-encrypt-then-mac-02.txt
2308 To enable it set the appropriate extension number (0x42 for the test
2309 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
2311 For non-compliant peers (i.e. just about everything) this should have no
2314 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
2318 *) Add EVP support for key wrapping algorithms, to avoid problems with
2319 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2320 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2321 algorithms and include tests cases.
2324 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
2328 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2329 MGF1 digest and OAEP label.
2332 *) Make openssl verify return errors.
2333 [Chris Palmer <palmer@google.com> and Ben Laurie]
2335 *) New function ASN1_TIME_diff to calculate the difference between two
2336 ASN1_TIME structures or one structure and the current time.
2339 *) Update fips_test_suite to support multiple command line options. New
2340 test to induce all self test errors in sequence and check expected
2344 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
2345 sign or verify all in one operation.
2348 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
2349 test programs and fips_test_suite. Includes functionality to parse
2350 the minimal script output of fipsalgest.pl directly.
2353 *) Add authorisation parameter to FIPS_module_mode_set().
2356 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
2359 *) Use separate DRBG fields for internal and external flags. New function
2360 FIPS_drbg_health_check() to perform on demand health checking. Add
2361 generation tests to fips_test_suite with reduced health check interval to
2362 demonstrate periodic health checking. Add "nodh" option to
2363 fips_test_suite to skip very slow DH test.
2366 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
2370 *) More extensive health check for DRBG checking many more failure modes.
2371 New function FIPS_selftest_drbg_all() to handle every possible DRBG
2372 combination: call this in fips_test_suite.
2375 *) Add support for canonical generation of DSA parameter 'g'. See
2378 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
2379 POST to handle HMAC cases.
2382 *) Add functions FIPS_module_version() and FIPS_module_version_text()
2383 to return numerical and string versions of the FIPS module number.
2386 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
2387 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
2388 outside the validated module in the FIPS capable OpenSSL.
2391 *) Minor change to DRBG entropy callback semantics. In some cases
2392 there is no multiple of the block length between min_len and
2393 max_len. Allow the callback to return more than max_len bytes
2394 of entropy but discard any extra: it is the callback's responsibility
2395 to ensure that the extra data discarded does not impact the
2396 requested amount of entropy.
2399 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
2400 information in FIPS186-3, SP800-57 and SP800-131A.
2403 *) CCM support via EVP. Interface is very similar to GCM case except we
2404 must supply all data in one chunk (i.e. no update, final) and the
2405 message length must be supplied if AAD is used. Add algorithm test
2409 *) Initial version of POST overhaul. Add POST callback to allow the status
2410 of POST to be monitored and/or failures induced. Modify fips_test_suite
2411 to use callback. Always run all selftests even if one fails.
2414 *) XTS support including algorithm test driver in the fips_gcmtest program.
2415 Note: this does increase the maximum key length from 32 to 64 bytes but
2416 there should be no binary compatibility issues as existing applications
2417 will never use XTS mode.
2420 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
2421 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
2422 performs algorithm blocking for unapproved PRNG types. Also do not
2423 set PRNG type in FIPS_mode_set(): leave this to the application.
2424 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
2425 the standard OpenSSL PRNG: set additional data to a date time vector.
2428 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
2429 This shouldn't present any incompatibility problems because applications
2430 shouldn't be using these directly and any that are will need to rethink
2431 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
2434 *) Extensive self tests and health checking required by SP800-90 DRBG.
2435 Remove strength parameter from FIPS_drbg_instantiate and always
2436 instantiate at maximum supported strength.
2439 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
2442 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
2445 *) New function DH_compute_key_padded() to compute a DH key and pad with
2446 leading zeroes if needed: this complies with SP800-56A et al.
2449 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
2450 anything, incomplete, subject to change and largely untested at present.
2453 *) Modify fipscanisteronly build option to only build the necessary object
2454 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
2457 *) Add experimental option FIPSSYMS to give all symbols in
2458 fipscanister.o and FIPS or fips prefix. This will avoid
2459 conflicts with future versions of OpenSSL. Add perl script
2460 util/fipsas.pl to preprocess assembly language source files
2461 and rename any affected symbols.
2464 *) Add selftest checks and algorithm block of non-fips algorithms in
2465 FIPS mode. Remove DES2 from selftests.
2468 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
2469 return internal method without any ENGINE dependencies. Add new
2470 tiny fips sign and verify functions.
2473 *) New build option no-ec2m to disable characteristic 2 code.
2476 *) New build option "fipscanisteronly". This only builds fipscanister.o
2477 and (currently) associated fips utilities. Uses the file Makefile.fips
2478 instead of Makefile.org as the prototype.
2481 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
2482 Update fips_gcmtest to use IV generator.
2485 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
2486 setting output buffer to NULL. The *Final function must be
2487 called although it will not retrieve any additional data. The tag
2488 can be set or retrieved with a ctrl. The IV length is by default 12
2489 bytes (96 bits) but can be set to an alternative value. If the IV
2490 length exceeds the maximum IV length (currently 16 bytes) it cannot be
2494 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
2495 underlying do_cipher function handles all cipher semantics itself
2496 including padding and finalisation. This is useful if (for example)
2497 an ENGINE cipher handles block padding itself. The behaviour of
2498 do_cipher is subtly changed if this flag is set: the return value
2499 is the number of characters written to the output buffer (zero is
2500 no longer an error code) or a negative error code. Also if the
2501 input buffer is NULL and length 0 finalisation should be performed.
2504 *) If a candidate issuer certificate is already part of the constructed
2505 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
2508 *) Improve forward-security support: add functions
2510 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
2511 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
2513 for use by SSL/TLS servers; the callback function will be called whenever a
2514 new session is created, and gets to decide whether the session may be
2515 cached to make it resumable (return 0) or not (return 1). (As by the
2516 SSL/TLS protocol specifications, the session_id sent by the server will be
2517 empty to indicate that the session is not resumable; also, the server will
2518 not generate RFC 4507 (RFC 5077) session tickets.)
2520 A simple reasonable callback implementation is to return is_forward_secure.
2521 This parameter will be set to 1 or 0 depending on the ciphersuite selected
2522 by the SSL/TLS server library, indicating whether it can provide forward
2524 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2526 *) New -verify_name option in command line utilities to set verification
2530 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
2531 Add CMAC pkey methods.
2534 *) Experimental renegotiation in s_server -www mode. If the client
2535 browses /reneg connection is renegotiated. If /renegcert it is
2536 renegotiated requesting a certificate.
2539 *) Add an "external" session cache for debugging purposes to s_server. This
2540 should help trace issues which normally are only apparent in deployed
2541 multi-process servers.
2544 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
2545 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
2546 BIO_set_cipher() and some obscure PEM functions were changed so they
2547 can now return an error. The RAND changes required a change to the
2548 RAND_METHOD structure.
2551 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
2552 a gcc attribute to warn if the result of a function is ignored. This
2553 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
2554 whose return value is often ignored.
2557 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
2558 These allow SCTs (signed certificate timestamps) to be requested and
2559 validated when establishing a connection.
2560 [Rob Percival <robpercival@google.com>]
2562 Changes between 1.0.2g and 1.0.2h [3 May 2016]
2564 *) Prevent padding oracle in AES-NI CBC MAC check
2566 A MITM attacker can use a padding oracle attack to decrypt traffic
2567 when the connection uses an AES CBC cipher and the server support
2570 This issue was introduced as part of the fix for Lucky 13 padding
2571 attack (CVE-2013-0169). The padding check was rewritten to be in
2572 constant time by making sure that always the same bytes are read and
2573 compared against either the MAC or padding bytes. But it no longer
2574 checked that there was enough data to have both the MAC and padding
2577 This issue was reported by Juraj Somorovsky using TLS-Attacker.
2581 *) Fix EVP_EncodeUpdate overflow
2583 An overflow can occur in the EVP_EncodeUpdate() function which is used for
2584 Base64 encoding of binary data. If an attacker is able to supply very large
2585 amounts of input data then a length check can overflow resulting in a heap
2588 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
2589 the PEM_write_bio* family of functions. These are mainly used within the
2590 OpenSSL command line applications, so any application which processes data
2591 from an untrusted source and outputs it as a PEM file should be considered
2592 vulnerable to this issue. User applications that call these APIs directly
2593 with large amounts of untrusted data may also be vulnerable.
2595 This issue was reported by Guido Vranken.
2599 *) Fix EVP_EncryptUpdate overflow
2601 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
2602 is able to supply very large amounts of input data after a previous call to
2603 EVP_EncryptUpdate() with a partial block then a length check can overflow
2604 resulting in a heap corruption. Following an analysis of all OpenSSL
2605 internal usage of the EVP_EncryptUpdate() function all usage is one of two
2606 forms. The first form is where the EVP_EncryptUpdate() call is known to be
2607 the first called function after an EVP_EncryptInit(), and therefore that
2608 specific call must be safe. The second form is where the length passed to
2609 EVP_EncryptUpdate() can be seen from the code to be some small value and
2610 therefore there is no possibility of an overflow. Since all instances are
2611 one of these two forms, it is believed that there can be no overflows in
2612 internal code due to this problem. It should be noted that
2613 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
2614 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
2615 of these calls have also been analysed too and it is believed there are no
2616 instances in internal usage where an overflow could occur.
2618 This issue was reported by Guido Vranken.
2622 *) Prevent ASN.1 BIO excessive memory allocation
2624 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
2625 a short invalid encoding can cause allocation of large amounts of memory
2626 potentially consuming excessive resources or exhausting memory.
2628 Any application parsing untrusted data through d2i BIO functions is
2629 affected. The memory based functions such as d2i_X509() are *not* affected.
2630 Since the memory based functions are used by the TLS library, TLS
2631 applications are not affected.
2633 This issue was reported by Brian Carpenter.
2639 ASN1 Strings that are over 1024 bytes can cause an overread in applications
2640 using the X509_NAME_oneline() function on EBCDIC systems. This could result
2641 in arbitrary stack data being returned in the buffer.
2643 This issue was reported by Guido Vranken.
2647 *) Modify behavior of ALPN to invoke callback after SNI/servername
2648 callback, such that updates to the SSL_CTX affect ALPN.
2651 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
2655 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
2656 methods are enabled and ssl2 is disabled the methods return NULL.
2659 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
2661 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
2662 Builds that are not configured with "enable-weak-ssl-ciphers" will not
2663 provide any "EXPORT" or "LOW" strength ciphers.
2666 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
2667 is by default disabled at build-time. Builds that are not configured with
2668 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
2669 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
2670 will need to explicitly call either of:
2672 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
2674 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
2676 as appropriate. Even if either of those is used, or the application
2677 explicitly uses the version-specific SSLv2_method() or its client and
2678 server variants, SSLv2 ciphers vulnerable to exhaustive search key
2679 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
2680 ciphers, and SSLv2 56-bit DES are no longer available.
2684 *) Fix a double-free in DSA code
2686 A double free bug was discovered when OpenSSL parses malformed DSA private
2687 keys and could lead to a DoS attack or memory corruption for applications
2688 that receive DSA private keys from untrusted sources. This scenario is
2691 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
2696 *) Disable SRP fake user seed to address a server memory leak.
2698 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
2700 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
2701 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
2702 was changed to ignore the "fake user" SRP seed, even if the seed
2705 Users should use SRP_VBASE_get1_by_user instead. Note that in
2706 SRP_VBASE_get1_by_user, caller must free the returned value. Note
2707 also that even though configuring the SRP seed attempts to hide
2708 invalid usernames by continuing the handshake with fake
2709 credentials, this behaviour is not constant time and no strong
2710 guarantees are made that the handshake is indistinguishable from
2711 that of a valid user.
2715 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
2717 In the BN_hex2bn function the number of hex digits is calculated using an
2718 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
2719 large values of |i| this can result in |bn_expand| not allocating any
2720 memory because |i * 4| is negative. This can leave the internal BIGNUM data
2721 field as NULL leading to a subsequent NULL ptr deref. For very large values
2722 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
2723 In this case memory is allocated to the internal BIGNUM data field, but it
2724 is insufficiently sized leading to heap corruption. A similar issue exists
2725 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
2726 is ever called by user applications with very large untrusted hex/dec data.
2727 This is anticipated to be a rare occurrence.
2729 All OpenSSL internal usage of these functions use data that is not expected
2730 to be untrusted, e.g. config file data or application command line
2731 arguments. If user developed applications generate config file data based
2732 on untrusted data then it is possible that this could also lead to security
2733 consequences. This is also anticipated to be rare.
2735 This issue was reported to OpenSSL by Guido Vranken.
2739 *) Fix memory issues in BIO_*printf functions
2741 The internal |fmtstr| function used in processing a "%s" format string in
2742 the BIO_*printf functions could overflow while calculating the length of a
2743 string and cause an OOB read when printing very long strings.
2745 Additionally the internal |doapr_outch| function can attempt to write to an
2746 OOB memory location (at an offset from the NULL pointer) in the event of a
2747 memory allocation failure. In 1.0.2 and below this could be caused where
2748 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
2749 could be in processing a very long "%s" format string. Memory leaks can
2752 The first issue may mask the second issue dependent on compiler behaviour.
2753 These problems could enable attacks where large amounts of untrusted data
2754 is passed to the BIO_*printf functions. If applications use these functions
2755 in this way then they could be vulnerable. OpenSSL itself uses these
2756 functions when printing out human-readable dumps of ASN.1 data. Therefore
2757 applications that print this data could be vulnerable if the data is from
2758 untrusted sources. OpenSSL command line applications could also be
2759 vulnerable where they print out ASN.1 data, or if untrusted data is passed
2760 as command line arguments.
2762 Libssl is not considered directly vulnerable. Additionally certificates etc
2763 received via remote connections via libssl are also unlikely to be able to
2764 trigger these issues because of message size limits enforced within libssl.
2766 This issue was reported to OpenSSL Guido Vranken.
2770 *) Side channel attack on modular exponentiation
2772 A side-channel attack was found which makes use of cache-bank conflicts on
2773 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
2774 of RSA keys. The ability to exploit this issue is limited as it relies on
2775 an attacker who has control of code in a thread running on the same
2776 hyper-threaded core as the victim thread which is performing decryptions.
2778 This issue was reported to OpenSSL by Yuval Yarom, The University of
2779 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
2780 Nadia Heninger, University of Pennsylvania with more information at
2781 http://cachebleed.info.
2785 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
2786 if no keysize is specified with default_bits. This fixes an
2787 omission in an earlier change that changed all RSA/DSA key generation
2788 apps to use 2048 bits by default.
2791 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
2792 *) DH small subgroups
2794 Historically OpenSSL only ever generated DH parameters based on "safe"
2795 primes. More recently (in version 1.0.2) support was provided for
2796 generating X9.42 style parameter files such as those required for RFC 5114
2797 support. The primes used in such files may not be "safe". Where an
2798 application is using DH configured with parameters based on primes that are
2799 not "safe" then an attacker could use this fact to find a peer's private
2800 DH exponent. This attack requires that the attacker complete multiple
2801 handshakes in which the peer uses the same private DH exponent. For example
2802 this could be used to discover a TLS server's private DH exponent if it's
2803 reusing the private DH exponent or it's using a static DH ciphersuite.
2805 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
2806 TLS. It is not on by default. If the option is not set then the server
2807 reuses the same private DH exponent for the life of the server process and
2808 would be vulnerable to this attack. It is believed that many popular
2809 applications do set this option and would therefore not be at risk.
2811 The fix for this issue adds an additional check where a "q" parameter is
2812 available (as is the case in X9.42 based parameters). This detects the
2813 only known attack, and is the only possible defense for static DH
2814 ciphersuites. This could have some performance impact.
2816 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
2817 default and cannot be disabled. This could have some performance impact.
2819 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
2823 *) SSLv2 doesn't block disabled ciphers
2825 A malicious client can negotiate SSLv2 ciphers that have been disabled on
2826 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
2827 been disabled, provided that the SSLv2 protocol was not also disabled via
2830 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
2831 and Sebastian Schinzel.
2835 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
2837 *) BN_mod_exp may produce incorrect results on x86_64
2839 There is a carry propagating bug in the x86_64 Montgomery squaring
2840 procedure. No EC algorithms are affected. Analysis suggests that attacks
2841 against RSA and DSA as a result of this defect would be very difficult to
2842 perform and are not believed likely. Attacks against DH are considered just
2843 feasible (although very difficult) because most of the work necessary to
2844 deduce information about a private key may be performed offline. The amount
2845 of resources required for such an attack would be very significant and
2846 likely only accessible to a limited number of attackers. An attacker would
2847 additionally need online access to an unpatched system using the target
2848 private key in a scenario with persistent DH parameters and a private
2849 key that is shared between multiple clients. For example this can occur by
2850 default in OpenSSL DHE based SSL/TLS ciphersuites.
2852 This issue was reported to OpenSSL by Hanno Böck.
2856 *) Certificate verify crash with missing PSS parameter
2858 The signature verification routines will crash with a NULL pointer
2859 dereference if presented with an ASN.1 signature using the RSA PSS
2860 algorithm and absent mask generation function parameter. Since these
2861 routines are used to verify certificate signature algorithms this can be
2862 used to crash any certificate verification operation and exploited in a
2863 DoS attack. Any application which performs certificate verification is
2864 vulnerable including OpenSSL clients and servers which enable client
2867 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
2871 *) X509_ATTRIBUTE memory leak
2873 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
2874 memory. This structure is used by the PKCS#7 and CMS routines so any
2875 application which reads PKCS#7 or CMS data from untrusted sources is
2876 affected. SSL/TLS is not affected.
2878 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
2883 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2884 This changes the decoding behaviour for some invalid messages,
2885 though the change is mostly in the more lenient direction, and
2886 legacy behaviour is preserved as much as possible.
2889 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2891 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2893 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
2895 *) Alternate chains certificate forgery
2897 During certificate verification, OpenSSL will attempt to find an
2898 alternative certificate chain if the first attempt to build such a chain
2899 fails. An error in the implementation of this logic can mean that an
2900 attacker could cause certain checks on untrusted certificates to be
2901 bypassed, such as the CA flag, enabling them to use a valid leaf
2902 certificate to act as a CA and "issue" an invalid certificate.
2904 This issue was reported to OpenSSL by Adam Langley/David Benjamin
2908 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
2910 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
2911 incompatibility in the handling of HMAC. The previous ABI has now been
2915 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
2917 *) Malformed ECParameters causes infinite loop
2919 When processing an ECParameters structure OpenSSL enters an infinite loop
2920 if the curve specified is over a specially malformed binary polynomial
2923 This can be used to perform denial of service against any
2924 system which processes public keys, certificate requests or
2925 certificates. This includes TLS clients and TLS servers with
2926 client authentication enabled.
2928 This issue was reported to OpenSSL by Joseph Barr-Pixton.
2932 *) Exploitable out-of-bounds read in X509_cmp_time
2934 X509_cmp_time does not properly check the length of the ASN1_TIME
2935 string and can read a few bytes out of bounds. In addition,
2936 X509_cmp_time accepts an arbitrary number of fractional seconds in the
2939 An attacker can use this to craft malformed certificates and CRLs of
2940 various sizes and potentially cause a segmentation fault, resulting in
2941 a DoS on applications that verify certificates or CRLs. TLS clients
2942 that verify CRLs are affected. TLS clients and servers with client
2943 authentication enabled may be affected if they use custom verification
2946 This issue was reported to OpenSSL by Robert Swiecki (Google), and
2947 independently by Hanno Böck.
2951 *) PKCS7 crash with missing EnvelopedContent
2953 The PKCS#7 parsing code does not handle missing inner EncryptedContent
2954 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
2955 with missing content and trigger a NULL pointer dereference on parsing.
2957 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
2958 structures from untrusted sources are affected. OpenSSL clients and
2959 servers are not affected.
2961 This issue was reported to OpenSSL by Michal Zalewski (Google).
2965 *) CMS verify infinite loop with unknown hash function
2967 When verifying a signedData message the CMS code can enter an infinite loop
2968 if presented with an unknown hash function OID. This can be used to perform
2969 denial of service against any system which verifies signedData messages using
2971 This issue was reported to OpenSSL by Johannes Bauer.
2975 *) Race condition handling NewSessionTicket
2977 If a NewSessionTicket is received by a multi-threaded client when attempting to
2978 reuse a previous ticket then a race condition can occur potentially leading to
2979 a double free of the ticket data.
2983 *) Only support 256-bit or stronger elliptic curves with the
2984 'ecdh_auto' setting (server) or by default (client). Of supported
2985 curves, prefer P-256 (both).
2988 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
2990 *) ClientHello sigalgs DoS fix
2992 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
2993 invalid signature algorithms extension a NULL pointer dereference will
2994 occur. This can be exploited in a DoS attack against the server.
2996 This issue was was reported to OpenSSL by David Ramos of Stanford
2999 [Stephen Henson and Matt Caswell]
3001 *) Multiblock corrupted pointer fix
3003 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
3004 feature only applies on 64 bit x86 architecture platforms that support AES
3005 NI instructions. A defect in the implementation of "multiblock" can cause
3006 OpenSSL's internal write buffer to become incorrectly set to NULL when
3007 using non-blocking IO. Typically, when the user application is using a
3008 socket BIO for writing, this will only result in a failed connection.
3009 However if some other BIO is used then it is likely that a segmentation
3010 fault will be triggered, thus enabling a potential DoS attack.
3012 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
3016 *) Segmentation fault in DTLSv1_listen fix
3018 The DTLSv1_listen function is intended to be stateless and processes the
3019 initial ClientHello from many peers. It is common for user code to loop
3020 over the call to DTLSv1_listen until a valid ClientHello is received with
3021 an associated cookie. A defect in the implementation of DTLSv1_listen means
3022 that state is preserved in the SSL object from one invocation to the next
3023 that can lead to a segmentation fault. Errors processing the initial
3024 ClientHello can trigger this scenario. An example of such an error could be
3025 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
3028 This issue was reported to OpenSSL by Per Allansson.
3032 *) Segmentation fault in ASN1_TYPE_cmp fix
3034 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
3035 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
3036 certificate signature algorithm consistency this can be used to crash any
3037 certificate verification operation and exploited in a DoS attack. Any
3038 application which performs certificate verification is vulnerable including
3039 OpenSSL clients and servers which enable client authentication.
3043 *) Segmentation fault for invalid PSS parameters fix
3045 The signature verification routines will crash with a NULL pointer
3046 dereference if presented with an ASN.1 signature using the RSA PSS
3047 algorithm and invalid parameters. Since these routines are used to verify
3048 certificate signature algorithms this can be used to crash any
3049 certificate verification operation and exploited in a DoS attack. Any
3050 application which performs certificate verification is vulnerable including
3051 OpenSSL clients and servers which enable client authentication.
3053 This issue was was reported to OpenSSL by Brian Carpenter.
3057 *) ASN.1 structure reuse memory corruption fix
3059 Reusing a structure in ASN.1 parsing may allow an attacker to cause
3060 memory corruption via an invalid write. Such reuse is and has been
3061 strongly discouraged and is believed to be rare.
3063 Applications that parse structures containing CHOICE or ANY DEFINED BY
3064 components may be affected. Certificate parsing (d2i_X509 and related
3065 functions) are however not affected. OpenSSL clients and servers are
3070 *) PKCS7 NULL pointer dereferences fix
3072 The PKCS#7 parsing code does not handle missing outer ContentInfo
3073 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
3074 missing content and trigger a NULL pointer dereference on parsing.
3076 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
3077 otherwise parse PKCS#7 structures from untrusted sources are
3078 affected. OpenSSL clients and servers are not affected.
3080 This issue was reported to OpenSSL by Michal Zalewski (Google).
3084 *) DoS via reachable assert in SSLv2 servers fix
3086 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
3087 servers that both support SSLv2 and enable export cipher suites by sending
3088 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
3090 This issue was discovered by Sean Burford (Google) and Emilia Käsper
3091 (OpenSSL development team).
3095 *) Empty CKE with client auth and DHE fix
3097 If client auth is used then a server can seg fault in the event of a DHE
3098 ciphersuite being selected and a zero length ClientKeyExchange message
3099 being sent by the client. This could be exploited in a DoS attack.
3103 *) Handshake with unseeded PRNG fix
3105 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
3106 with an unseeded PRNG. The conditions are:
3107 - The client is on a platform where the PRNG has not been seeded
3108 automatically, and the user has not seeded manually
3109 - A protocol specific client method version has been used (i.e. not
3110 SSL_client_methodv23)
3111 - A ciphersuite is used that does not require additional random data from
3112 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
3114 If the handshake succeeds then the client random that has been used will
3115 have been generated from a PRNG with insufficient entropy and therefore the
3116 output may be predictable.
3118 For example using the following command with an unseeded openssl will
3119 succeed on an unpatched platform:
3121 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
3125 *) Use After Free following d2i_ECPrivatekey error fix
3127 A malformed EC private key file consumed via the d2i_ECPrivateKey function
3128 could cause a use after free condition. This, in turn, could cause a double
3129 free in several private key parsing functions (such as d2i_PrivateKey
3130 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
3131 for applications that receive EC private keys from untrusted
3132 sources. This scenario is considered rare.
3134 This issue was discovered by the BoringSSL project and fixed in their
3139 *) X509_to_X509_REQ NULL pointer deref fix
3141 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
3142 the certificate key is invalid. This function is rarely used in practice.
3144 This issue was discovered by Brian Carpenter.
3148 *) Removed the export ciphers from the DEFAULT ciphers
3151 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
3153 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
3154 ARMv5 through ARMv8, as opposite to "locking" it to single one.
3155 So far those who have to target multiple platforms would compromise
3156 and argue that binary targeting say ARMv5 would still execute on
3157 ARMv8. "Universal" build resolves this compromise by providing
3158 near-optimal performance even on newer platforms.
3161 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
3162 (other platforms pending).
3163 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
3165 *) Add support for the SignedCertificateTimestampList certificate and
3166 OCSP response extensions from RFC6962.
3169 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3170 for corner cases. (Certain input points at infinity could lead to
3171 bogus results, with non-infinity inputs mapped to infinity too.)
3174 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
3175 This covers AES, SHA256/512 and GHASH. "Initial" means that most
3176 common cases are optimized and there still is room for further
3177 improvements. Vector Permutation AES for Altivec is also added.
3180 *) Add support for little-endian ppc64 Linux target.
3181 [Marcelo Cerri (IBM)]
3183 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
3184 SHA1, SHA256 and GHASH. "Initial" means that most common cases
3185 are optimized and there still is room for further improvements.
3186 Both 32- and 64-bit modes are supported.
3187 [Andy Polyakov, Ard Biesheuvel (Linaro)]
3189 *) Improved ARMv7 NEON support.
3192 *) Support for SPARC Architecture 2011 crypto extensions, first
3193 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
3194 SHA256/512, MD5, GHASH and modular exponentiation.
3195 [Andy Polyakov, David Miller]
3197 *) Accelerated modular exponentiation for Intel processors, a.k.a.
3199 [Shay Gueron & Vlad Krasnov (Intel Corp)]
3201 *) Support for new and upcoming Intel processors, including AVX2,
3202 BMI and SHA ISA extensions. This includes additional "stitched"
3203 implementations, AESNI-SHA256 and GCM, and multi-buffer support
3206 This work was sponsored by Intel Corp.
3209 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
3210 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
3211 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
3214 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
3215 this fixes a limitation in previous versions of OpenSSL.
3218 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
3219 MGF1 digest and OAEP label.
3222 *) Add EVP support for key wrapping algorithms, to avoid problems with
3223 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
3224 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
3225 algorithms and include tests cases.
3228 *) Add functions to allocate and set the fields of an ECDSA_METHOD
3230 [Douglas E. Engert, Steve Henson]
3232 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
3233 difference in days and seconds between two tm or ASN1_TIME structures.
3236 *) Add -rev test option to s_server to just reverse order of characters
3237 received by client and send back to server. Also prints an abbreviated
3238 summary of the connection parameters.
3241 *) New option -brief for s_client and s_server to print out a brief summary
3242 of connection parameters.
3245 *) Add callbacks for arbitrary TLS extensions.
3246 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
3248 *) New option -crl_download in several openssl utilities to download CRLs
3249 from CRLDP extension in certificates.
3252 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
3255 *) New function X509_CRL_diff to generate a delta CRL from the difference
3256 of two full CRLs. Add support to "crl" utility.
3259 *) New functions to set lookup_crls function and to retrieve
3260 X509_STORE from X509_STORE_CTX.
3263 *) Print out deprecated issuer and subject unique ID fields in
3267 *) Extend OCSP I/O functions so they can be used for simple general purpose
3268 HTTP as well as OCSP. New wrapper function which can be used to download
3269 CRLs using the OCSP API.
3272 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
3275 *) SSL_CONF* functions. These provide a common framework for application
3276 configuration using configuration files or command lines.
3279 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
3280 message callback and prints the results. Needs compile time option
3281 "enable-ssl-trace". New options to s_client and s_server to enable
3285 *) New ctrl and macro to retrieve supported points extensions.
3286 Print out extension in s_server and s_client.
3289 *) New functions to retrieve certificate signature and signature
3293 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
3297 *) New Suite B modes for TLS code. These use and enforce the requirements
3298 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
3299 only use Suite B curves. The Suite B modes can be set by using the
3300 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
3303 *) New chain verification flags for Suite B levels of security. Check
3304 algorithms are acceptable when flags are set in X509_verify_cert.
3307 *) Make tls1_check_chain return a set of flags indicating checks passed
3308 by a certificate chain. Add additional tests to handle client
3309 certificates: checks for matching certificate type and issuer name
3313 *) If an attempt is made to use a signature algorithm not in the peer
3314 preference list abort the handshake. If client has no suitable
3315 signature algorithms in response to a certificate request do not
3316 use the certificate.
3319 *) If server EC tmp key is not in client preference list abort handshake.
3322 *) Add support for certificate stores in CERT structure. This makes it
3323 possible to have different stores per SSL structure or one store in
3324 the parent SSL_CTX. Include distinct stores for certificate chain
3325 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
3326 to build and store a certificate chain in CERT structure: returning
3327 an error if the chain cannot be built: this will allow applications
3328 to test if a chain is correctly configured.
3330 Note: if the CERT based stores are not set then the parent SSL_CTX
3331 store is used to retain compatibility with existing behaviour.
3335 *) New function ssl_set_client_disabled to set a ciphersuite disabled
3336 mask based on the current session, check mask when sending client
3337 hello and checking the requested ciphersuite.
3340 *) New ctrls to retrieve and set certificate types in a certificate
3341 request message. Print out received values in s_client. If certificate
3342 types is not set with custom values set sensible values based on
3343 supported signature algorithms.
3346 *) Support for distinct client and server supported signature algorithms.
3349 *) Add certificate callback. If set this is called whenever a certificate
3350 is required by client or server. An application can decide which
3351 certificate chain to present based on arbitrary criteria: for example
3352 supported signature algorithms. Add very simple example to s_server.
3353 This fixes many of the problems and restrictions of the existing client
3354 certificate callback: for example you can now clear an existing
3355 certificate and specify the whole chain.
3358 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
3359 the certificate can be used for (if anything). Set valid_flags field
3360 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
3361 to have similar checks in it.
3363 Add new "cert_flags" field to CERT structure and include a "strict mode".
3364 This enforces some TLS certificate requirements (such as only permitting
3365 certificate signature algorithms contained in the supported algorithms
3366 extension) which some implementations ignore: this option should be used
3367 with caution as it could cause interoperability issues.
3370 *) Update and tidy signature algorithm extension processing. Work out
3371 shared signature algorithms based on preferences and peer algorithms
3372 and print them out in s_client and s_server. Abort handshake if no
3373 shared signature algorithms.
3376 *) Add new functions to allow customised supported signature algorithms
3377 for SSL and SSL_CTX structures. Add options to s_client and s_server
3381 *) New function SSL_certs_clear() to delete all references to certificates
3382 from an SSL structure. Before this once a certificate had been added
3383 it couldn't be removed.
3386 *) Integrate hostname, email address and IP address checking with certificate
3387 verification. New verify options supporting checking in openssl utility.
3390 *) Fixes and wildcard matching support to hostname and email checking
3391 functions. Add manual page.
3392 [Florian Weimer (Red Hat Product Security Team)]
3394 *) New functions to check a hostname email or IP address against a
3395 certificate. Add options x509 utility to print results of checks against
3399 *) Fix OCSP checking.
3400 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
3402 *) Initial experimental support for explicitly trusted non-root CAs.
3403 OpenSSL still tries to build a complete chain to a root but if an
3404 intermediate CA has a trust setting included that is used. The first
3405 setting is used: whether to trust (e.g., -addtrust option to the x509
3409 *) Add -trusted_first option which attempts to find certificates in the
3410 trusted store even if an untrusted chain is also supplied.
3413 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
3414 platform support for Linux and Android.
3417 *) Support for linux-x32, ILP32 environment in x86_64 framework.
3420 *) Experimental multi-implementation support for FIPS capable OpenSSL.
3421 When in FIPS mode the approved implementations are used as normal,
3422 when not in FIPS mode the internal unapproved versions are used instead.
3423 This means that the FIPS capable OpenSSL isn't forced to use the
3424 (often lower performance) FIPS implementations outside FIPS mode.
3427 *) Transparently support X9.42 DH parameters when calling
3428 PEM_read_bio_DHparameters. This means existing applications can handle
3429 the new parameter format automatically.
3432 *) Initial experimental support for X9.42 DH parameter format: mainly
3433 to support use of 'q' parameter for RFC5114 parameters.
3436 *) Add DH parameters from RFC5114 including test data to dhtest.
3439 *) Support for automatic EC temporary key parameter selection. If enabled
3440 the most preferred EC parameters are automatically used instead of
3441 hardcoded fixed parameters. Now a server just has to call:
3442 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
3443 support ECDH and use the most appropriate parameters.
3446 *) Enhance and tidy EC curve and point format TLS extension code. Use
3447 static structures instead of allocation if default values are used.
3448 New ctrls to set curves we wish to support and to retrieve shared curves.
3449 Print out shared curves in s_server. New options to s_server and s_client
3450 to set list of supported curves.
3453 *) New ctrls to retrieve supported signature algorithms and
3454 supported curve values as an array of NIDs. Extend openssl utility
3455 to print out received values.
3458 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
3459 between NIDs and the more common NIST names such as "P-256". Enhance
3460 ecparam utility and ECC method to recognise the NIST names for curves.
3463 *) Enhance SSL/TLS certificate chain handling to support different
3464 chains for each certificate instead of one chain in the parent SSL_CTX.
3467 *) Support for fixed DH ciphersuite client authentication: where both
3468 server and client use DH certificates with common parameters.
3471 *) Support for fixed DH ciphersuites: those requiring DH server
3475 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
3477 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
3478 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
3479 X509_CINF_get_signature were reverted post internal team review.
3481 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
3483 *) Build fixes for the Windows and OpenVMS platforms
3484 [Matt Caswell and Richard Levitte]
3486 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
3488 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
3489 message can cause a segmentation fault in OpenSSL due to a NULL pointer
3490 dereference. This could lead to a Denial Of Service attack. Thanks to
3491 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
3495 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
3496 dtls1_buffer_record function under certain conditions. In particular this
3497 could occur if an attacker sent repeated DTLS records with the same
3498 sequence number but for the next epoch. The memory leak could be exploited
3499 by an attacker in a Denial of Service attack through memory exhaustion.
3500 Thanks to Chris Mueller for reporting this issue.
3504 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
3505 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
3506 method would be set to NULL which could later result in a NULL pointer
3507 dereference. Thanks to Frank Schmirler for reporting this issue.
3511 *) Abort handshake if server key exchange message is omitted for ephemeral
3514 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
3515 reporting this issue.
3519 *) Remove non-export ephemeral RSA code on client and server. This code
3520 violated the TLS standard by allowing the use of temporary RSA keys in
3521 non-export ciphersuites and could be used by a server to effectively
3522 downgrade the RSA key length used to a value smaller than the server
3523 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
3524 INRIA or reporting this issue.
3528 *) Fixed issue where DH client certificates are accepted without verification.
3529 An OpenSSL server will accept a DH certificate for client authentication
3530 without the certificate verify message. This effectively allows a client to
3531 authenticate without the use of a private key. This only affects servers
3532 which trust a client certificate authority which issues certificates
3533 containing DH keys: these are extremely rare and hardly ever encountered.
3534 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
3539 *) Ensure that the session ID context of an SSL is updated when its
3540 SSL_CTX is updated via SSL_set_SSL_CTX.
3542 The session ID context is typically set from the parent SSL_CTX,
3543 and can vary with the CTX.
3546 *) Fix various certificate fingerprint issues.
3548 By using non-DER or invalid encodings outside the signed portion of a
3549 certificate the fingerprint can be changed without breaking the signature.
3550 Although no details of the signed portion of the certificate can be changed
3551 this can cause problems with some applications: e.g. those using the
3552 certificate fingerprint for blacklists.
3554 1. Reject signatures with non zero unused bits.
3556 If the BIT STRING containing the signature has non zero unused bits reject
3557 the signature. All current signature algorithms require zero unused bits.
3559 2. Check certificate algorithm consistency.
3561 Check the AlgorithmIdentifier inside TBS matches the one in the
3562 certificate signature. NB: this will result in signature failure
3563 errors for some broken certificates.
3565 Thanks to Konrad Kraszewski from Google for reporting this issue.
3567 3. Check DSA/ECDSA signatures use DER.
3569 Re-encode DSA/ECDSA signatures and compare with the original received
3570 signature. Return an error if there is a mismatch.
3572 This will reject various cases including garbage after signature
3573 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
3574 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
3575 (negative or with leading zeroes).
3577 Further analysis was conducted and fixes were developed by Stephen Henson
3578 of the OpenSSL core team.
3583 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
3584 results on some platforms, including x86_64. This bug occurs at random
3585 with a very low probability, and is not known to be exploitable in any
3586 way, though its exact impact is difficult to determine. Thanks to Pieter
3587 Wuille (Blockstream) who reported this issue and also suggested an initial
3588 fix. Further analysis was conducted by the OpenSSL development team and
3589 Adam Langley of Google. The final fix was developed by Andy Polyakov of
3590 the OpenSSL core team.
3594 *) Do not resume sessions on the server if the negotiated protocol
3595 version does not match the session's version. Resuming with a different
3596 version, while not strictly forbidden by the RFC, is of questionable
3597 sanity and breaks all known clients.
3598 [David Benjamin, Emilia Käsper]
3600 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
3601 early CCS messages during renegotiation. (Note that because
3602 renegotiation is encrypted, this early CCS was not exploitable.)
3605 *) Tighten client-side session ticket handling during renegotiation:
3606 ensure that the client only accepts a session ticket if the server sends
3607 the extension anew in the ServerHello. Previously, a TLS client would
3608 reuse the old extension state and thus accept a session ticket if one was
3609 announced in the initial ServerHello.
3611 Similarly, ensure that the client requires a session ticket if one
3612 was advertised in the ServerHello. Previously, a TLS client would
3613 ignore a missing NewSessionTicket message.
3616 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
3618 *) SRTP Memory Leak.
3620 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
3621 sends a carefully crafted handshake message, to cause OpenSSL to fail
3622 to free up to 64k of memory causing a memory leak. This could be
3623 exploited in a Denial Of Service attack. This issue affects OpenSSL
3624 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
3625 whether SRTP is used or configured. Implementations of OpenSSL that
3626 have been compiled with OPENSSL_NO_SRTP defined are not affected.
3628 The fix was developed by the OpenSSL team.
3632 *) Session Ticket Memory Leak.
3634 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
3635 integrity of that ticket is first verified. In the event of a session
3636 ticket integrity check failing, OpenSSL will fail to free memory
3637 causing a memory leak. By sending a large number of invalid session
3638 tickets an attacker could exploit this issue in a Denial Of Service
3643 *) Build option no-ssl3 is incomplete.
3645 When OpenSSL is configured with "no-ssl3" as a build option, servers
3646 could accept and complete a SSL 3.0 handshake, and clients could be
3647 configured to send them.
3649 [Akamai and the OpenSSL team]
3651 *) Add support for TLS_FALLBACK_SCSV.
3652 Client applications doing fallback retries should call
3653 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
3655 [Adam Langley, Bodo Moeller]
3657 *) Add additional DigestInfo checks.
3659 Re-encode DigestInto in DER and check against the original when
3660 verifying RSA signature: this will reject any improperly encoded
3661 DigestInfo structures.
3663 Note: this is a precautionary measure and no attacks are currently known.
3667 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
3669 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
3670 SRP code can be overrun an internal buffer. Add sanity check that
3671 g, A, B < N to SRP code.
3673 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
3674 Group for discovering this issue.
3678 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
3679 TLS 1.0 instead of higher protocol versions when the ClientHello message
3680 is badly fragmented. This allows a man-in-the-middle attacker to force a
3681 downgrade to TLS 1.0 even if both the server and the client support a
3682 higher protocol version, by modifying the client's TLS records.
3684 Thanks to David Benjamin and Adam Langley (Google) for discovering and
3685 researching this issue.
3689 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
3690 to a denial of service attack. A malicious server can crash the client
3691 with a null pointer dereference (read) by specifying an anonymous (EC)DH
3692 ciphersuite and sending carefully crafted handshake messages.
3694 Thanks to Felix Gröbert (Google) for discovering and researching this
3699 *) By sending carefully crafted DTLS packets an attacker could cause openssl
3700 to leak memory. This can be exploited through a Denial of Service attack.
3701 Thanks to Adam Langley for discovering and researching this issue.
3705 *) An attacker can force openssl to consume large amounts of memory whilst
3706 processing DTLS handshake messages. This can be exploited through a
3707 Denial of Service attack.
3708 Thanks to Adam Langley for discovering and researching this issue.
3712 *) An attacker can force an error condition which causes openssl to crash
3713 whilst processing DTLS packets due to memory being freed twice. This
3714 can be exploited through a Denial of Service attack.
3715 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
3720 *) If a multithreaded client connects to a malicious server using a resumed
3721 session and the server sends an ec point format extension it could write
3722 up to 255 bytes to freed memory.
3724 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
3729 *) A malicious server can crash an OpenSSL client with a null pointer
3730 dereference (read) by specifying an SRP ciphersuite even though it was not
3731 properly negotiated with the client. This can be exploited through a
3732 Denial of Service attack.
3734 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
3735 discovering and researching this issue.
3739 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
3740 X509_name_oneline, X509_name_print_ex et al. to leak some information
3741 from the stack. Applications may be affected if they echo pretty printing
3742 output to the attacker.
3744 Thanks to Ivan Fratric (Google) for discovering this issue.
3746 [Emilia Käsper, and Steve Henson]
3748 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3749 for corner cases. (Certain input points at infinity could lead to
3750 bogus results, with non-infinity inputs mapped to infinity too.)
3753 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
3755 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
3756 handshake can force the use of weak keying material in OpenSSL
3757 SSL/TLS clients and servers.
3759 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
3760 researching this issue. (CVE-2014-0224)
3761 [KIKUCHI Masashi, Steve Henson]
3763 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
3764 OpenSSL DTLS client the code can be made to recurse eventually crashing
3767 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
3769 [Imre Rad, Steve Henson]
3771 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
3772 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
3773 client or server. This is potentially exploitable to run arbitrary
3774 code on a vulnerable client or server.
3776 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
3777 [Jüri Aedla, Steve Henson]
3779 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
3780 are subject to a denial of service attack.
3782 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
3783 this issue. (CVE-2014-3470)
3784 [Felix Gröbert, Ivan Fratric, Steve Henson]
3786 *) Harmonize version and its documentation. -f flag is used to display
3788 [mancha <mancha1@zoho.com>]
3790 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
3791 in i2d_ECPrivateKey.
3792 [mancha <mancha1@zoho.com>]
3794 *) Fix some double frees. These are not thought to be exploitable.
3795 [mancha <mancha1@zoho.com>]
3797 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
3799 *) A missing bounds check in the handling of the TLS heartbeat extension
3800 can be used to reveal up to 64k of memory to a connected client or
3803 Thanks for Neel Mehta of Google Security for discovering this bug and to
3804 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
3805 preparing the fix (CVE-2014-0160)
3806 [Adam Langley, Bodo Moeller]
3808 *) Fix for the attack described in the paper "Recovering OpenSSL
3809 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
3810 by Yuval Yarom and Naomi Benger. Details can be obtained from:
3811 http://eprint.iacr.org/2014/140
3813 Thanks to Yuval Yarom and Naomi Benger for discovering this
3814 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
3815 [Yuval Yarom and Naomi Benger]
3817 *) TLS pad extension: draft-agl-tls-padding-03
3819 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
3820 TLS client Hello record length value would otherwise be > 255 and
3821 less that 512 pad with a dummy extension containing zeroes so it
3822 is at least 512 bytes long.
3824 [Adam Langley, Steve Henson]
3826 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
3828 *) Fix for TLS record tampering bug. A carefully crafted invalid
3829 handshake could crash OpenSSL with a NULL pointer exception.
3830 Thanks to Anton Johansson for reporting this issues.
3833 *) Keep original DTLS digest and encryption contexts in retransmission
3834 structures so we can use the previous session parameters if they need
3835 to be resent. (CVE-2013-6450)
3838 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
3839 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
3840 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
3841 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
3842 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
3843 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
3844 [Rob Stradling, Adam Langley]
3846 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
3848 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
3849 supporting platforms or when small records were transferred.
3850 [Andy Polyakov, Steve Henson]
3852 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
3854 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
3856 This addresses the flaw in CBC record processing discovered by
3857 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
3858 at: http://www.isg.rhul.ac.uk/tls/
3860 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3861 Security Group at Royal Holloway, University of London
3862 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
3863 Emilia Käsper for the initial patch.
3865 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
3867 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
3868 ciphersuites which can be exploited in a denial of service attack.
3869 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
3870 and detecting this bug and to Wolfgang Ettlinger
3871 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
3875 *) Return an error when checking OCSP signatures when key is NULL.
3876 This fixes a DoS attack. (CVE-2013-0166)
3879 *) Make openssl verify return errors.
3880 [Chris Palmer <palmer@google.com> and Ben Laurie]
3882 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
3883 the right response is stapled. Also change SSL_get_certificate()
3884 so it returns the certificate actually sent.
3885 See http://rt.openssl.org/Ticket/Display.html?id=2836.
3886 [Rob Stradling <rob.stradling@comodo.com>]
3888 *) Fix possible deadlock when decoding public keys.
3891 *) Don't use TLS 1.0 record version number in initial client hello
3895 Changes between 1.0.1b and 1.0.1c [10 May 2012]
3897 *) Sanity check record length before skipping explicit IV in TLS
3898 1.2, 1.1 and DTLS to fix DoS attack.
3900 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
3901 fuzzing as a service testing platform.
3905 *) Initialise tkeylen properly when encrypting CMS messages.
3906 Thanks to Solar Designer of Openwall for reporting this issue.
3909 *) In FIPS mode don't try to use composite ciphers as they are not
3913 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
3915 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
3916 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
3917 mean any application compiled against OpenSSL 1.0.0 headers setting
3918 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
3919 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
3920 0x10000000L Any application which was previously compiled against
3921 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
3922 will need to be recompiled as a result. Letting be results in
3923 inability to disable specifically TLS 1.1 and in client context,
3924 in unlike event, limit maximum offered version to TLS 1.0 [see below].
3927 *) In order to ensure interoperability SSL_OP_NO_protocolX does not
3928 disable just protocol X, but all protocols above X *if* there are
3929 protocols *below* X still enabled. In more practical terms it means
3930 that if application wants to disable TLS1.0 in favor of TLS1.1 and
3931 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
3932 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
3936 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
3938 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
3939 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
3940 in CRYPTO_realloc_clean.
3942 Thanks to Tavis Ormandy, Google Security Team, for discovering this
3943 issue and to Adam Langley <agl@chromium.org> for fixing it.
3945 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
3947 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
3950 *) Workarounds for some broken servers that "hang" if a client hello
3951 record length exceeds 255 bytes.
3953 1. Do not use record version number > TLS 1.0 in initial client
3954 hello: some (but not all) hanging servers will now work.
3955 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
3956 the number of ciphers sent in the client hello. This should be
3957 set to an even number, such as 50, for example by passing:
3958 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
3959 Most broken servers should now work.
3960 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
3961 TLS 1.2 client support entirely.
3964 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
3967 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
3969 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
3970 STRING form instead of a DigestInfo.
3973 *) The format used for MDC2 RSA signatures is inconsistent between EVP
3974 and the RSA_sign/RSA_verify functions. This was made more apparent when
3975 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
3976 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
3977 the correct format in RSA_verify so both forms transparently work.
3980 *) Some servers which support TLS 1.0 can choke if we initially indicate
3981 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
3982 encrypted premaster secret. As a workaround use the maximum permitted
3983 client version in client hello, this should keep such servers happy
3984 and still work with previous versions of OpenSSL.
3987 *) Add support for TLS/DTLS heartbeats.
3988 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3990 *) Add support for SCTP.
3991 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3993 *) Improved PRNG seeding for VOS.
3994 [Paul Green <Paul.Green@stratus.com>]
3996 *) Extensive assembler packs updates, most notably:
3998 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
3999 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
4000 - x86_64: bit-sliced AES implementation;
4001 - ARM: NEON support, contemporary platforms optimizations;
4002 - s390x: z196 support;
4003 - *: GHASH and GF(2^m) multiplication implementations;
4007 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
4008 (removal of unnecessary code)
4009 [Peter Sylvester <peter.sylvester@edelweb.fr>]
4011 *) Add TLS key material exporter from RFC 5705.
4014 *) Add DTLS-SRTP negotiation from RFC 5764.
4017 *) Add Next Protocol Negotiation,
4018 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
4019 disabled with a no-npn flag to config or Configure. Code donated
4021 [Adam Langley <agl@google.com> and Ben Laurie]
4023 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
4024 NIST-P256, NIST-P521, with constant-time single point multiplication on
4025 typical inputs. Compiler support for the nonstandard type __uint128_t is
4026 required to use this (present in gcc 4.4 and later, for 64-bit builds).
4027 Code made available under Apache License version 2.0.
4029 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
4030 line to include this in your build of OpenSSL, and run "make depend" (or
4031 "make update"). This enables the following EC_METHODs:
4033 EC_GFp_nistp224_method()
4034 EC_GFp_nistp256_method()
4035 EC_GFp_nistp521_method()
4037 EC_GROUP_new_by_curve_name() will automatically use these (while
4038 EC_GROUP_new_curve_GFp() currently prefers the more flexible
4040 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
4042 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
4043 all platforms. Move ssize_t definition from e_os.h to the public
4044 header file e_os2.h as it now appears in public header file cms.h
4047 *) New -sigopt option to the ca, req and x509 utilities. Additional
4048 signature parameters can be passed using this option and in
4052 *) Add RSA PSS signing function. This will generate and set the
4053 appropriate AlgorithmIdentifiers for PSS based on those in the
4054 corresponding EVP_MD_CTX structure. No application support yet.
4057 *) Support for companion algorithm specific ASN1 signing routines.
4058 New function ASN1_item_sign_ctx() signs a pre-initialised
4059 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
4060 the appropriate parameters.
4063 *) Add new algorithm specific ASN1 verification initialisation function
4064 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
4065 handling will be the same no matter what EVP_PKEY_METHOD is used.
4066 Add a PSS handler to support verification of PSS signatures: checked
4067 against a number of sample certificates.
4070 *) Add signature printing for PSS. Add PSS OIDs.
4071 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
4073 *) Add algorithm specific signature printing. An individual ASN1 method
4074 can now print out signatures instead of the standard hex dump.
4076 More complex signatures (e.g. PSS) can print out more meaningful
4077 information. Include DSA version that prints out the signature
4081 *) Password based recipient info support for CMS library: implementing
4085 *) Split password based encryption into PBES2 and PBKDF2 functions. This
4086 neatly separates the code into cipher and PBE sections and is required
4087 for some algorithms that split PBES2 into separate pieces (such as
4088 password based CMS).
4091 *) Session-handling fixes:
4092 - Fix handling of connections that are resuming with a session ID,
4093 but also support Session Tickets.
4094 - Fix a bug that suppressed issuing of a new ticket if the client
4095 presented a ticket with an expired session.
4096 - Try to set the ticket lifetime hint to something reasonable.
4097 - Make tickets shorter by excluding irrelevant information.
4098 - On the client side, don't ignore renewed tickets.
4099 [Adam Langley, Bodo Moeller (Google)]
4101 *) Fix PSK session representation.
4104 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
4106 This work was sponsored by Intel.
4109 *) Add GCM support to TLS library. Some custom code is needed to split
4110 the IV between the fixed (from PRF) and explicit (from TLS record)
4111 portions. This adds all GCM ciphersuites supported by RFC5288 and
4112 RFC5289. Generalise some AES* cipherstrings to include GCM and
4113 add a special AESGCM string for GCM only.
4116 *) Expand range of ctrls for AES GCM. Permit setting invocation
4117 field on decrypt and retrieval of invocation field only on encrypt.
4120 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
4121 As required by RFC5289 these ciphersuites cannot be used if for
4122 versions of TLS earlier than 1.2.
4125 *) For FIPS capable OpenSSL interpret a NULL default public key method
4126 as unset and return the appropriate default but do *not* set the default.
4127 This means we can return the appropriate method in applications that
4128 switch between FIPS and non-FIPS modes.
4131 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
4132 ENGINE is used then we cannot handle that in the FIPS module so we
4133 keep original code iff non-FIPS operations are allowed.
4136 *) Add -attime option to openssl utilities.
4137 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
4139 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
4142 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
4143 FIPS EC methods unconditionally for now.
4146 *) New build option no-ec2m to disable characteristic 2 code.
4149 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
4150 all cases can be covered as some introduce binary incompatibilities.
4153 *) Redirect RSA operations to FIPS module including keygen,
4154 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
4157 *) Add similar low level API blocking to ciphers.
4160 *) Low level digest APIs are not approved in FIPS mode: any attempt
4161 to use these will cause a fatal error. Applications that *really* want
4162 to use them can use the private_* version instead.
4165 *) Redirect cipher operations to FIPS module for FIPS builds.
4168 *) Redirect digest operations to FIPS module for FIPS builds.
4171 *) Update build system to add "fips" flag which will link in fipscanister.o
4172 for static and shared library builds embedding a signature if needed.
4175 *) Output TLS supported curves in preference order instead of numerical
4176 order. This is currently hardcoded for the highest order curves first.
4177 This should be configurable so applications can judge speed vs strength.
4180 *) Add TLS v1.2 server support for client authentication.
4183 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
4187 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
4188 FIPS modules versions.
4191 *) Add TLS v1.2 client side support for client authentication. Keep cache
4192 of handshake records longer as we don't know the hash algorithm to use
4193 until after the certificate request message is received.
4196 *) Initial TLS v1.2 client support. Add a default signature algorithms
4197 extension including all the algorithms we support. Parse new signature
4198 format in client key exchange. Relax some ECC signing restrictions for
4199 TLS v1.2 as indicated in RFC5246.
4202 *) Add server support for TLS v1.2 signature algorithms extension. Switch
4203 to new signature format when needed using client digest preference.
4204 All server ciphersuites should now work correctly in TLS v1.2. No client
4205 support yet and no support for client certificates.
4208 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
4209 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
4210 ciphersuites. At present only RSA key exchange ciphersuites work with
4211 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
4212 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
4213 and version checking.
4216 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
4217 with this defined it will not be affected by any changes to ssl internal
4218 structures. Add several utility functions to allow openssl application
4219 to work with OPENSSL_NO_SSL_INTERN defined.
4222 *) A long standing patch to add support for SRP from EdelWeb (Peter
4223 Sylvester and Christophe Renou) was integrated.
4224 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
4225 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
4228 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
4231 *) Permit abbreviated handshakes when renegotiating using the function
4232 SSL_renegotiate_abbreviated().
4233 [Robin Seggelmann <seggelmann@fh-muenster.de>]
4235 *) Add call to ENGINE_register_all_complete() to
4236 ENGINE_load_builtin_engines(), so some implementations get used
4237 automatically instead of needing explicit application support.
4240 *) Add support for TLS key exporter as described in RFC5705.
4241 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
4243 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
4244 a few changes are required:
4246 Add SSL_OP_NO_TLSv1_1 flag.
4247 Add TLSv1_1 methods.
4248 Update version checking logic to handle version 1.1.
4249 Add explicit IV handling (ported from DTLS code).
4250 Add command line options to s_client/s_server.
4253 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
4255 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
4256 in CMS and PKCS7 code. When RSA decryption fails use a random key for
4257 content decryption and always return the same error. Note: this attack
4258 needs on average 2^20 messages so it only affects automated senders. The
4259 old behaviour can be re-enabled in the CMS code by setting the
4260 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
4261 an MMA defence is not necessary.
4262 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
4263 this issue. (CVE-2012-0884)
4266 *) Fix CVE-2011-4619: make sure we really are receiving a
4267 client hello before rejecting multiple SGC restarts. Thanks to
4268 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
4271 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
4273 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
4274 Thanks to Antonio Martin, Enterprise Secure Access Research and
4275 Development, Cisco Systems, Inc. for discovering this bug and
4276 preparing a fix. (CVE-2012-0050)
4279 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
4281 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
4282 of the Vaudenay padding oracle attack on CBC mode encryption
4283 which enables an efficient plaintext recovery attack against
4284 the OpenSSL implementation of DTLS. Their attack exploits timing
4285 differences arising during decryption processing. A research
4286 paper describing this attack can be found at:
4287 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
4288 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
4289 Security Group at Royal Holloway, University of London
4290 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
4291 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
4292 for preparing the fix. (CVE-2011-4108)
4293 [Robin Seggelmann, Michael Tuexen]
4295 *) Clear bytes used for block padding of SSL 3.0 records.
4297 [Adam Langley (Google)]
4299 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
4300 Kadianakis <desnacked@gmail.com> for discovering this issue and
4301 Adam Langley for preparing the fix. (CVE-2011-4619)
4302 [Adam Langley (Google)]
4304 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
4305 [Andrey Kulikov <amdeich@gmail.com>]
4307 *) Prevent malformed RFC3779 data triggering an assertion failure.
4308 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
4309 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
4310 [Rob Austein <sra@hactrn.net>]
4312 *) Improved PRNG seeding for VOS.
4313 [Paul Green <Paul.Green@stratus.com>]
4315 *) Fix ssl_ciph.c set-up race.
4316 [Adam Langley (Google)]
4318 *) Fix spurious failures in ecdsatest.c.
4319 [Emilia Käsper (Google)]
4321 *) Fix the BIO_f_buffer() implementation (which was mixing different
4322 interpretations of the '..._len' fields).
4323 [Adam Langley (Google)]
4325 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
4326 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
4327 threads won't reuse the same blinding coefficients.
4329 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
4330 lock to call BN_BLINDING_invert_ex, and avoids one use of
4331 BN_BLINDING_update for each BN_BLINDING structure (previously,
4332 the last update always remained unused).
4333 [Emilia Käsper (Google)]
4335 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
4336 [Bob Buckholz (Google)]
4338 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
4340 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
4341 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
4342 [Kaspar Brand <ossl@velox.ch>]
4344 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
4345 for multi-threaded use of ECDH. (CVE-2011-3210)
4346 [Adam Langley (Google)]
4348 *) Fix x509_name_ex_d2i memory leak on bad inputs.
4351 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
4352 signature public key algorithm by using OID xref utilities instead.
4353 Before this you could only use some ECC ciphersuites with SHA1 only.
4356 *) Add protection against ECDSA timing attacks as mentioned in the paper
4357 by Billy Bob Brumley and Nicola Tuveri, see:
4359 http://eprint.iacr.org/2011/232.pdf
4361 [Billy Bob Brumley and Nicola Tuveri]
4363 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
4365 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
4366 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
4368 *) Fix bug in string printing code: if *any* escaping is enabled we must
4369 escape the escape character (backslash) or the resulting string is
4373 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
4375 *) Disable code workaround for ancient and obsolete Netscape browsers
4376 and servers: an attacker can use it in a ciphersuite downgrade attack.
4377 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
4380 *) Fixed J-PAKE implementation error, originally discovered by
4381 Sebastien Martini, further info and confirmation from Stefan
4382 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
4385 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
4387 *) Fix extension code to avoid race conditions which can result in a buffer
4388 overrun vulnerability: resumed sessions must not be modified as they can
4389 be shared by multiple threads. CVE-2010-3864
4392 *) Fix WIN32 build system to correctly link an ENGINE directory into
4396 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
4398 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
4400 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
4402 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
4404 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
4405 context. The operation can be customised via the ctrl mechanism in
4406 case ENGINEs want to include additional functionality.
4409 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
4412 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
4413 output hashes compatible with older versions of OpenSSL.
4414 [Willy Weisz <weisz@vcpc.univie.ac.at>]
4416 *) Fix compression algorithm handling: if resuming a session use the
4417 compression algorithm of the resumed session instead of determining
4418 it from client hello again. Don't allow server to change algorithm.
4421 *) Add load_crls() function to apps tidying load_certs() too. Add option
4422 to verify utility to allow additional CRLs to be included.
4425 *) Update OCSP request code to permit adding custom headers to the request:
4426 some responders need this.
4429 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
4431 [Julia Lawall <julia@diku.dk>]
4433 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
4434 needlessly dereferenced structures, used obsolete functions and
4435 didn't handle all updated verify codes correctly.
4438 *) Disable MD2 in the default configuration.
4441 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
4442 indicate the initial BIO being pushed or popped. This makes it possible
4443 to determine whether the BIO is the one explicitly called or as a result
4444 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
4445 it handles reference counts correctly and doesn't zero out the I/O bio
4446 when it is not being explicitly popped. WARNING: applications which
4447 included workarounds for the old buggy behaviour will need to be modified
4448 or they could free up already freed BIOs.
4451 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
4452 renaming to all platforms (within the 0.9.8 branch, this was
4453 done conditionally on Netware platforms to avoid a name clash).
4454 [Guenter <lists@gknw.net>]
4456 *) Add ECDHE and PSK support to DTLS.
4457 [Michael Tuexen <tuexen@fh-muenster.de>]
4459 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
4463 *) Add "missing" function EVP_MD_flags() (without this the only way to
4464 retrieve a digest flags is by accessing the structure directly. Update
4465 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
4466 or cipher is registered as in the "from" argument. Print out all
4467 registered digests in the dgst usage message instead of manually
4468 attempting to work them out.
4471 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
4472 this allows the use of compression and extensions. Change default cipher
4473 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
4474 by default unless an application cipher string requests it.
4477 *) Alter match criteria in PKCS12_parse(). It used to try to use local
4478 key ids to find matching certificates and keys but some PKCS#12 files
4479 don't follow the (somewhat unwritten) rules and this strategy fails.
4480 Now just gather all certificates together and the first private key
4481 then look for the first certificate that matches the key.
4484 *) Support use of registered digest and cipher names for dgst and cipher
4485 commands instead of having to add each one as a special case. So now
4492 openssl dgst -sha256 foo
4494 and this works for ENGINE based algorithms too.
4498 *) Update Gost ENGINE to support parameter files.
4499 [Victor B. Wagner <vitus@cryptocom.ru>]
4501 *) Support GeneralizedTime in ca utility.
4502 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
4504 *) Enhance the hash format used for certificate directory links. The new
4505 form uses the canonical encoding (meaning equivalent names will work
4506 even if they aren't identical) and uses SHA1 instead of MD5. This form
4507 is incompatible with the older format and as a result c_rehash should
4508 be used to rebuild symbolic links.
4511 *) Make PKCS#8 the default write format for private keys, replacing the
4512 traditional format. This form is standardised, more secure and doesn't
4513 include an implicit MD5 dependency.
4516 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
4517 committed to OpenSSL should pass this lot as a minimum.
4520 *) Add session ticket override functionality for use by EAP-FAST.
4521 [Jouni Malinen <j@w1.fi>]
4523 *) Modify HMAC functions to return a value. Since these can be implemented
4524 in an ENGINE errors can occur.
4527 *) Type-checked OBJ_bsearch_ex.
4530 *) Type-checked OBJ_bsearch. Also some constification necessitated
4531 by type-checking. Still to come: TXT_DB, bsearch(?),
4532 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
4536 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
4537 seconds to a tm structure directly, instead of going through OS
4538 specific date routines. This avoids any issues with OS routines such
4539 as the year 2038 bug. New *_adj() functions for ASN1 time structures
4540 and X509_time_adj_ex() to cover the extended range. The existing
4541 X509_time_adj() is still usable and will no longer have any date issues.
4544 *) Delta CRL support. New use deltas option which will attempt to locate
4545 and search any appropriate delta CRLs available.
4547 This work was sponsored by Google.
4550 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
4551 code and add additional score elements. Validate alternate CRL paths
4552 as part of the CRL checking and indicate a new error "CRL path validation
4553 error" in this case. Applications wanting additional details can use
4554 the verify callback and check the new "parent" field. If this is not
4555 NULL CRL path validation is taking place. Existing applications won't
4556 see this because it requires extended CRL support which is off by
4559 This work was sponsored by Google.
4562 *) Support for freshest CRL extension.
4564 This work was sponsored by Google.
4567 *) Initial indirect CRL support. Currently only supported in the CRLs
4568 passed directly and not via lookup. Process certificate issuer
4569 CRL entry extension and lookup CRL entries by bother issuer name
4570 and serial number. Check and process CRL issuer entry in IDP extension.
4572 This work was sponsored by Google.
4575 *) Add support for distinct certificate and CRL paths. The CRL issuer
4576 certificate is validated separately in this case. Only enabled if
4577 an extended CRL support flag is set: this flag will enable additional
4578 CRL functionality in future.
4580 This work was sponsored by Google.
4583 *) Add support for policy mappings extension.
4585 This work was sponsored by Google.
4588 *) Fixes to pathlength constraint, self issued certificate handling,
4589 policy processing to align with RFC3280 and PKITS tests.
4591 This work was sponsored by Google.
4594 *) Support for name constraints certificate extension. DN, email, DNS
4595 and URI types are currently supported.
4597 This work was sponsored by Google.
4600 *) To cater for systems that provide a pointer-based thread ID rather
4601 than numeric, deprecate the current numeric thread ID mechanism and
4602 replace it with a structure and associated callback type. This
4603 mechanism allows a numeric "hash" to be extracted from a thread ID in
4604 either case, and on platforms where pointers are larger than 'long',
4605 mixing is done to help ensure the numeric 'hash' is usable even if it
4606 can't be guaranteed unique. The default mechanism is to use "&errno"
4607 as a pointer-based thread ID to distinguish between threads.
4609 Applications that want to provide their own thread IDs should now use
4610 CRYPTO_THREADID_set_callback() to register a callback that will call
4611 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
4613 Note that ERR_remove_state() is now deprecated, because it is tied
4614 to the assumption that thread IDs are numeric. ERR_remove_state(0)
4615 to free the current thread's error state should be replaced by
4616 ERR_remove_thread_state(NULL).
4618 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
4619 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
4620 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
4621 application was previously providing a numeric thread callback that
4622 was inappropriate for distinguishing threads, then uniqueness might
4623 have been obtained with &errno that happened immediately in the
4624 intermediate development versions of OpenSSL; this is no longer the
4625 case, the numeric thread callback will now override the automatic use
4627 [Geoff Thorpe, with help from Bodo Moeller]
4629 *) Initial support for different CRL issuing certificates. This covers a
4630 simple case where the self issued certificates in the chain exist and
4631 the real CRL issuer is higher in the existing chain.
4633 This work was sponsored by Google.
4636 *) Removed effectively defunct crypto/store from the build.
4639 *) Revamp of STACK to provide stronger type-checking. Still to come:
4640 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
4641 ASN1_STRING, CONF_VALUE.
4644 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
4645 RAM on SSL connections. This option can save about 34k per idle SSL.
4648 *) Revamp of LHASH to provide stronger type-checking. Still to come:
4649 STACK, TXT_DB, bsearch, qsort.
4652 *) Initial support for Cryptographic Message Syntax (aka CMS) based
4653 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
4654 support for data, signedData, compressedData, digestedData and
4655 encryptedData, envelopedData types included. Scripts to check against
4656 RFC4134 examples draft and interop and consistency checks of many
4657 content types and variants.
4660 *) Add options to enc utility to support use of zlib compression BIO.
4663 *) Extend mk1mf to support importing of options and assembly language
4664 files from Configure script, currently only included in VC-WIN32.
4665 The assembly language rules can now optionally generate the source
4666 files from the associated perl scripts.
4669 *) Implement remaining functionality needed to support GOST ciphersuites.
4670 Interop testing has been performed using CryptoPro implementations.
4671 [Victor B. Wagner <vitus@cryptocom.ru>]
4673 *) s390x assembler pack.
4676 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
4680 *) Implement Opaque PRF Input TLS extension as specified in
4681 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
4682 official specification yet and no extension type assignment by
4683 IANA exists, this extension (for now) will have to be explicitly
4684 enabled when building OpenSSL by providing the extension number
4685 to use. For example, specify an option
4687 -DTLSEXT_TYPE_opaque_prf_input=0x9527
4689 to the "config" or "Configure" script to enable the extension,
4690 assuming extension number 0x9527 (which is a completely arbitrary
4691 and unofficial assignment based on the MD5 hash of the Internet
4692 Draft). Note that by doing so, you potentially lose
4693 interoperability with other TLS implementations since these might
4694 be using the same extension number for other purposes.
4696 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
4697 opaque PRF input value to use in the handshake. This will create
4698 an internal copy of the length-'len' string at 'src', and will
4699 return non-zero for success.
4701 To get more control and flexibility, provide a callback function
4704 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
4705 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
4709 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
4712 Callback function 'cb' will be called in handshakes, and is
4713 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
4714 Argument 'arg' is for application purposes (the value as given to
4715 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
4716 be provided to the callback function). The callback function
4717 has to return non-zero to report success: usually 1 to use opaque
4718 PRF input just if possible, or 2 to enforce use of the opaque PRF
4719 input. In the latter case, the library will abort the handshake
4720 if opaque PRF input is not successfully negotiated.
4722 Arguments 'peerinput' and 'len' given to the callback function
4723 will always be NULL and 0 in the case of a client. A server will
4724 see the client's opaque PRF input through these variables if
4725 available (NULL and 0 otherwise). Note that if the server
4726 provides an opaque PRF input, the length must be the same as the
4727 length of the client's opaque PRF input.
4729 Note that the callback function will only be called when creating
4730 a new session (session resumption can resume whatever was
4731 previously negotiated), and will not be called in SSL 2.0
4732 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
4733 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
4734 for applications that need to enforce opaque PRF input.
4738 *) Update ssl code to support digests other than SHA1+MD5 for handshake
4741 [Victor B. Wagner <vitus@cryptocom.ru>]
4743 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4744 RFC4507bis. The encrypted ticket format is an encrypted encoded
4745 SSL_SESSION structure, that way new session features are automatically
4748 If a client application caches session in an SSL_SESSION structure
4749 support is transparent because tickets are now stored in the encoded
4752 The SSL_CTX structure automatically generates keys for ticket
4753 protection in servers so again support should be possible
4754 with no application modification.
4756 If a client or server wishes to disable RFC4507 support then the option
4757 SSL_OP_NO_TICKET can be set.
4759 Add a TLS extension debugging callback to allow the contents of any client
4760 or server extensions to be examined.
4762 This work was sponsored by Google.
4765 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
4766 OpenSSL should now compile cleanly on gcc 4.2
4767 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
4769 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
4770 support including streaming MAC support: this is required for GOST
4771 ciphersuite support.
4772 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
4774 *) Add option -stream to use PKCS#7 streaming in smime utility. New
4775 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
4776 to output in BER and PEM format.
4779 *) Experimental support for use of HMAC via EVP_PKEY interface. This
4780 allows HMAC to be handled via the EVP_DigestSign*() interface. The
4781 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
4782 ENGINE support for HMAC keys which are unextractable. New -mac and
4783 -macopt options to dgst utility.
4786 *) New option -sigopt to dgst utility. Update dgst to use
4787 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
4788 alternative signing parameters such as X9.31 or PSS in the dgst
4792 *) Change ssl_cipher_apply_rule(), the internal function that does
4793 the work each time a ciphersuite string requests enabling
4794 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
4795 removing ("!foo+bar") a class of ciphersuites: Now it maintains
4796 the order of disabled ciphersuites such that those ciphersuites
4797 that most recently went from enabled to disabled not only stay
4798 in order with respect to each other, but also have higher priority
4799 than other disabled ciphersuites the next time ciphersuites are
4802 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
4803 the same ciphersuites as with "HIGH" alone, but in a specific
4804 order where the PSK ciphersuites come first (since they are the
4805 most recently disabled ciphersuites when "HIGH" is parsed).
4807 Also, change ssl_create_cipher_list() (using this new
4808 functionality) such that between otherwise identical
4809 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
4813 *) Change ssl_create_cipher_list() so that it automatically
4814 arranges the ciphersuites in reasonable order before starting
4815 to process the rule string. Thus, the definition for "DEFAULT"
4816 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
4817 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
4818 This makes it much easier to arrive at a reasonable default order
4819 in applications for which anonymous ciphers are OK (meaning
4820 that you can't actually use DEFAULT).
4821 [Bodo Moeller; suggested by Victor Duchovni]
4823 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
4824 processing) into multiple integers instead of setting
4825 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
4826 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
4827 (These masks as well as the individual bit definitions are hidden
4828 away into the non-exported interface ssl/ssl_locl.h, so this
4829 change to the definition of the SSL_CIPHER structure shouldn't
4830 affect applications.) This give us more bits for each of these
4831 categories, so there is no longer a need to coagulate AES128 and
4832 AES256 into a single algorithm bit, and to coagulate Camellia128
4833 and Camellia256 into a single algorithm bit, which has led to all
4836 Thus, among other things, the kludge introduced in 0.9.7m and
4837 0.9.8e for masking out AES256 independently of AES128 or masking
4838 out Camellia256 independently of AES256 is not needed here in 0.9.9.
4840 With the change, we also introduce new ciphersuite aliases that
4841 so far were missing: "AES128", "AES256", "CAMELLIA128", and
4845 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
4846 Use the leftmost N bytes of the signature input if the input is
4847 larger than the prime q (with N being the size in bytes of q).
4850 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
4851 it yet and it is largely untested.
4854 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
4857 *) Initial incomplete changes to avoid need for function casts in OpenSSL
4858 some compilers (gcc 4.2 and later) reject their use. Safestack is
4859 reimplemented. Update ASN1 to avoid use of legacy functions.
4862 *) Win32/64 targets are linked with Winsock2.
4865 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
4866 to external functions. This can be used to increase CRL handling
4867 efficiency especially when CRLs are very large by (for example) storing
4868 the CRL revoked certificates in a database.
4871 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
4872 new CRLs added to a directory can be used. New command line option
4873 -verify_return_error to s_client and s_server. This causes real errors
4874 to be returned by the verify callback instead of carrying on no matter
4875 what. This reflects the way a "real world" verify callback would behave.
4878 *) GOST engine, supporting several GOST algorithms and public key formats.
4879 Kindly donated by Cryptocom.
4882 *) Partial support for Issuing Distribution Point CRL extension. CRLs
4883 partitioned by DP are handled but no indirect CRL or reason partitioning
4884 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
4885 selected via a scoring technique which handles IDP and AKID in CRLs.
4888 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
4889 will ultimately be used for all verify operations: this will remove the
4890 X509_STORE dependency on certificate verification and allow alternative
4891 lookup methods. X509_STORE based implementations of these two callbacks.
4894 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
4895 Modify get_crl() to find a valid (unexpired) CRL if possible.
4898 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
4899 this would be called X509_CRL_cmp() but that name is already used by
4900 a function that just compares CRL issuer names. Cache several CRL
4901 extensions in X509_CRL structure and cache CRLDP in X509.
4904 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
4905 this maps equivalent X509_NAME structures into a consistent structure.
4906 Name comparison can then be performed rapidly using memcmp().
4909 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
4913 *) Allow digests to supply their own micalg string for S/MIME type using
4914 the ctrl EVP_MD_CTRL_MICALG.
4917 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
4918 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
4919 ctrl. It can then customise the structure before and/or after signing
4923 *) New function OBJ_add_sigid() to allow application defined signature OIDs
4924 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
4925 to free up any added signature OIDs.
4928 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
4929 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
4930 digest and cipher tables. New options added to openssl utility:
4931 list-message-digest-algorithms and list-cipher-algorithms.
4934 *) Change the array representation of binary polynomials: the list
4935 of degrees of non-zero coefficients is now terminated with -1.
4936 Previously it was terminated with 0, which was also part of the
4937 value; thus, the array representation was not applicable to
4938 polynomials where t^0 has coefficient zero. This change makes
4939 the array representation useful in a more general context.
4942 *) Various modifications and fixes to SSL/TLS cipher string
4943 handling. For ECC, the code now distinguishes between fixed ECDH
4944 with RSA certificates on the one hand and with ECDSA certificates
4945 on the other hand, since these are separate ciphersuites. The
4946 unused code for Fortezza ciphersuites has been removed.
4948 For consistency with EDH, ephemeral ECDH is now called "EECDH"
4949 (not "ECDHE"). For consistency with the code for DH
4950 certificates, use of ECDH certificates is now considered ECDH
4951 authentication, not RSA or ECDSA authentication (the latter is
4952 merely the CA's signing algorithm and not actively used in the
4955 The temporary ciphersuite alias "ECCdraft" is no longer
4956 available, and ECC ciphersuites are no longer excluded from "ALL"
4957 and "DEFAULT". The following aliases now exist for RFC 4492
4958 ciphersuites, most of these by analogy with the DH case:
4960 kECDHr - ECDH cert, signed with RSA
4961 kECDHe - ECDH cert, signed with ECDSA
4962 kECDH - ECDH cert (signed with either RSA or ECDSA)
4963 kEECDH - ephemeral ECDH
4964 ECDH - ECDH cert or ephemeral ECDH
4970 AECDH - anonymous ECDH
4971 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
4975 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
4976 Use correct micalg parameters depending on digest(s) in signed message.
4979 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
4980 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
4983 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
4984 an engine to register a method. Add ENGINE lookups for methods and
4985 functional reference processing.
4988 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
4989 EVP_{Sign,Verify}* which allow an application to customise the signature
4993 *) New -resign option to smime utility. This adds one or more signers
4994 to an existing PKCS#7 signedData structure. Also -md option to use an
4995 alternative message digest algorithm for signing.
4998 *) Tidy up PKCS#7 routines and add new functions to make it easier to
4999 create PKCS7 structures containing multiple signers. Update smime
5000 application to support multiple signers.
5003 *) New -macalg option to pkcs12 utility to allow setting of an alternative
5007 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
5008 Reorganize PBE internals to lookup from a static table using NIDs,
5009 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
5010 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
5011 PRF which will be automatically used with PBES2.
5014 *) Replace the algorithm specific calls to generate keys in "req" with the
5018 *) Update PKCS#7 enveloped data routines to use new API. This is now
5019 supported by any public key method supporting the encrypt operation. A
5020 ctrl is added to allow the public key algorithm to examine or modify
5021 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
5025 *) Add a ctrl to asn1 method to allow a public key algorithm to express
5026 a default digest type to use. In most cases this will be SHA1 but some
5027 algorithms (such as GOST) need to specify an alternative digest. The
5028 return value indicates how strong the preference is 1 means optional and
5029 2 is mandatory (that is it is the only supported type). Modify
5030 ASN1_item_sign() to accept a NULL digest argument to indicate it should
5031 use the default md. Update openssl utilities to use the default digest
5032 type for signing if it is not explicitly indicated.
5035 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
5036 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
5037 signing method from the key type. This effectively removes the link
5038 between digests and public key types.
5041 *) Add an OID cross reference table and utility functions. Its purpose is to
5042 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
5043 rsaEncryption. This will allow some of the algorithm specific hackery
5044 needed to use the correct OID to be removed.
5047 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
5048 structures for PKCS7_sign(). They are now set up by the relevant public
5052 *) Add provisional EC pkey method with support for ECDSA and ECDH.
5055 *) Add support for key derivation (agreement) in the API, DH method and
5059 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
5060 public and private key formats. As a side effect these add additional
5061 command line functionality not previously available: DSA signatures can be
5062 generated and verified using pkeyutl and DH key support and generation in
5067 [Oliver Tappe <zooey@hirschkaefer.de>]
5069 *) New make target "install_html_docs" installs HTML renditions of the
5071 [Oliver Tappe <zooey@hirschkaefer.de>]
5073 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
5074 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
5075 support key and parameter generation and add initial key generation
5076 functionality for RSA.
5079 *) Add functions for main EVP_PKEY_method operations. The undocumented
5080 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
5081 EVP_PKEY_{encrypt,decrypt}_old.
5084 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
5085 key API, doesn't do much yet.
5088 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
5089 public key algorithms. New option to openssl utility:
5090 "list-public-key-algorithms" to print out info.
5093 *) Implement the Supported Elliptic Curves Extension for
5094 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5097 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
5098 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
5101 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
5102 utilities such as rsa, dsa, dsaparam etc except they process any key
5106 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
5107 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
5108 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
5112 *) Initial support for pluggable public key ASN1.
5113 De-spaghettify the public key ASN1 handling. Move public and private
5114 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
5115 algorithm specific handling to a single module within the relevant
5116 algorithm directory. Add functions to allow (near) opaque processing
5117 of public and private key structures.
5120 *) Implement the Supported Point Formats Extension for
5121 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
5124 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
5125 for the psk identity [hint] and the psk callback functions to the
5126 SSL_SESSION, SSL and SSL_CTX structure.
5129 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
5133 SSL_CTX_use_psk_identity_hint
5134 SSL_get_psk_identity_hint
5135 SSL_get_psk_identity
5136 SSL_use_psk_identity_hint
5138 [Mika Kousa and Pasi Eronen of Nokia Corporation]
5140 *) Add RFC 3161 compliant time stamp request creation, response generation
5141 and response verification functionality.
5142 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
5144 *) Add initial support for TLS extensions, specifically for the server_name
5145 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5146 have new members for a host name. The SSL data structure has an
5147 additional member SSL_CTX *initial_ctx so that new sessions can be
5148 stored in that context to allow for session resumption, even after the
5149 SSL has been switched to a new SSL_CTX in reaction to a client's
5150 server_name extension.
5152 New functions (subject to change):
5154 SSL_get_servername()
5155 SSL_get_servername_type()
5158 New CTRL codes and macros (subject to change):
5160 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5161 - SSL_CTX_set_tlsext_servername_callback()
5162 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5163 - SSL_CTX_set_tlsext_servername_arg()
5164 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5166 openssl s_client has a new '-servername ...' option.
5168 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5169 '-key2 ...', '-servername_fatal' (subject to change). This allows
5170 testing the HostName extension for a specific single host name ('-cert'
5171 and '-key' remain fallbacks for handshakes without HostName
5172 negotiation). If the unrecognized_name alert has to be sent, this by
5173 default is a warning; it becomes fatal with the '-servername_fatal'
5176 [Peter Sylvester, Remy Allais, Christophe Renou]
5178 *) Whirlpool hash implementation is added.
5181 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
5182 bn(64,32). Because of instruction set limitations it doesn't have
5183 any negative impact on performance. This was done mostly in order
5184 to make it possible to share assembler modules, such as bn_mul_mont
5185 implementations, between 32- and 64-bit builds without hassle.
5188 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
5189 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
5193 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
5194 dedicated Montgomery multiplication procedure, is introduced.
5195 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
5196 "64-bit" performance on certain 32-bit targets.
5199 *) New option SSL_OP_NO_COMP to disable use of compression selectively
5200 in SSL structures. New SSL ctrl to set maximum send fragment size.
5201 Save memory by setting the I/O buffer sizes dynamically instead of
5202 using the maximum available value.
5205 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
5206 in addition to the text details.
5209 *) Very, very preliminary EXPERIMENTAL support for printing of general
5210 ASN1 structures. This currently produces rather ugly output and doesn't
5211 handle several customised structures at all.
5214 *) Integrated support for PVK file format and some related formats such
5215 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
5216 these in the 'rsa' and 'dsa' utilities.
5219 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
5222 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
5223 place for the (very old) "NETSCAPE" format certificates which are now
5224 handled using new ASN1 code equivalents.
5227 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
5228 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
5229 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
5232 *) Modify CRL distribution points extension code to print out previously
5233 unsupported fields. Enhance extension setting code to allow setting of
5237 *) Add print and set support for Issuing Distribution Point CRL extension.
5240 *) Change 'Configure' script to enable Camellia by default.
5243 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
5245 *) When rejecting SSL/TLS records due to an incorrect version number, never
5246 update s->server with a new major version number. As of
5247 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
5248 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
5249 the previous behavior could result in a read attempt at NULL when
5250 receiving specific incorrect SSL/TLS records once record payload
5251 protection is active. (CVE-2010-0740)
5252 [Bodo Moeller, Adam Langley <agl@chromium.org>]
5254 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
5255 could be crashed if the relevant tables were not present (e.g. chrooted).
5256 [Tomas Hoger <thoger@redhat.com>]
5258 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
5260 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
5261 [Martin Olsson, Neel Mehta]
5263 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
5264 accommodate for stack sorting, always a write lock!).
5267 *) On some versions of WIN32 Heap32Next is very slow. This can cause
5268 excessive delays in the RAND_poll(): over a minute. As a workaround
5269 include a time check in the inner Heap32Next loop too.
5272 *) The code that handled flushing of data in SSL/TLS originally used the
5273 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
5274 the problem outlined in PR#1949. The fix suggested there however can
5275 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
5276 of Apache). So instead simplify the code to flush unconditionally.
5277 This should be fine since flushing with no data to flush is a no op.
5280 *) Handle TLS versions 2.0 and later properly and correctly use the
5281 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
5282 off ancient servers have a habit of sticking around for a while...
5285 *) Modify compression code so it frees up structures without using the
5286 ex_data callbacks. This works around a problem where some applications
5287 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
5288 restarting) then use compression (e.g. SSL with compression) later.
5289 This results in significant per-connection memory leaks and
5290 has caused some security issues including CVE-2008-1678 and
5294 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
5295 change when encrypting or decrypting.
5298 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
5299 connect and renegotiate with servers which do not support RI.
5300 Until RI is more widely deployed this option is enabled by default.
5303 *) Add "missing" ssl ctrls to clear options and mode.
5306 *) If client attempts to renegotiate and doesn't support RI respond with
5307 a no_renegotiation alert as required by RFC5746. Some renegotiating
5308 TLS clients will continue a connection gracefully when they receive
5309 the alert. Unfortunately OpenSSL mishandled this alert and would hang
5310 waiting for a server hello which it will never receive. Now we treat a
5311 received no_renegotiation alert as a fatal error. This is because
5312 applications requesting a renegotiation might well expect it to succeed
5313 and would have no code in place to handle the server denying it so the
5314 only safe thing to do is to terminate the connection.
5317 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
5318 peer supports secure renegotiation and 0 otherwise. Print out peer
5319 renegotiation support in s_client/s_server.
5322 *) Replace the highly broken and deprecated SPKAC certification method with
5323 the updated NID creation version. This should correctly handle UTF8.
5326 *) Implement RFC5746. Re-enable renegotiation but require the extension
5327 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
5328 turns out to be a bad idea. It has been replaced by
5329 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
5330 SSL_CTX_set_options(). This is really not recommended unless you
5331 know what you are doing.
5332 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
5334 *) Fixes to stateless session resumption handling. Use initial_ctx when
5335 issuing and attempting to decrypt tickets in case it has changed during
5336 servername handling. Use a non-zero length session ID when attempting
5337 stateless session resumption: this makes it possible to determine if
5338 a resumption has occurred immediately after receiving server hello
5339 (several places in OpenSSL subtly assume this) instead of later in
5343 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
5344 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
5345 fixes for a few places where the return code is not checked
5347 [Julia Lawall <julia@diku.dk>]
5349 *) Add --strict-warnings option to Configure script to include devteam
5350 warnings in other configurations.
5353 *) Add support for --libdir option and LIBDIR variable in makefiles. This
5354 makes it possible to install openssl libraries in locations which
5355 have names other than "lib", for example "/usr/lib64" which some
5357 [Steve Henson, based on patch from Jeremy Utley]
5359 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
5360 X690 8.9.12 and can produce some misleading textual output of OIDs.
5361 [Steve Henson, reported by Dan Kaminsky]
5363 *) Delete MD2 from algorithm tables. This follows the recommendation in
5364 several standards that it is not used in new applications due to
5365 several cryptographic weaknesses. For binary compatibility reasons
5366 the MD2 API is still compiled in by default.
5369 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
5373 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
5374 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
5376 [Guenter <lists@gknw.net>]
5378 *) Fix the server certificate chain building code to use X509_verify_cert(),
5379 it used to have an ad-hoc builder which was unable to cope with anything
5380 other than a simple chain.
5381 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
5383 *) Don't check self signed certificate signatures in X509_verify_cert()
5384 by default (a flag can override this): it just wastes time without
5385 adding any security. As a useful side effect self signed root CAs
5386 with non-FIPS digests are now usable in FIPS mode.
5389 *) In dtls1_process_out_of_seq_message() the check if the current message
5390 is already buffered was missing. For every new message was memory
5391 allocated, allowing an attacker to perform an denial of service attack
5392 with sending out of seq handshake messages until there is no memory
5393 left. Additionally every future message was buffered, even if the
5394 sequence number made no sense and would be part of another handshake.
5395 So only messages with sequence numbers less than 10 in advance will be
5396 buffered. (CVE-2009-1378)
5397 [Robin Seggelmann, discovered by Daniel Mentz]
5399 *) Records are buffered if they arrive with a future epoch to be
5400 processed after finishing the corresponding handshake. There is
5401 currently no limitation to this buffer allowing an attacker to perform
5402 a DOS attack with sending records with future epochs until there is no
5403 memory left. This patch adds the pqueue_size() function to determine
5404 the size of a buffer and limits the record buffer to 100 entries.
5406 [Robin Seggelmann, discovered by Daniel Mentz]
5408 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
5409 parent structure is freed. (CVE-2009-1379)
5412 *) Handle non-blocking I/O properly in SSL_shutdown() call.
5413 [Darryl Miles <darryl-mailinglists@netbauds.net>]
5416 [Ilya O. <vrghost@gmail.com>]
5418 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
5420 *) Disable renegotiation completely - this fixes a severe security
5421 problem (CVE-2009-3555) at the cost of breaking all
5422 renegotiation. Renegotiation can be re-enabled by setting
5423 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
5424 run-time. This is really not recommended unless you know what
5428 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
5430 *) Don't set val to NULL when freeing up structures, it is freed up by
5431 underlying code. If sizeof(void *) > sizeof(long) this can result in
5432 zeroing past the valid field. (CVE-2009-0789)
5433 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
5435 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
5436 checked correctly. This would allow some invalid signed attributes to
5437 appear to verify correctly. (CVE-2009-0591)
5438 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5440 *) Reject UniversalString and BMPString types with invalid lengths. This
5441 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
5442 a legal length. (CVE-2009-0590)
5445 *) Set S/MIME signing as the default purpose rather than setting it
5446 unconditionally. This allows applications to override it at the store
5450 *) Permit restricted recursion of ASN1 strings. This is needed in practice
5451 to handle some structures.
5454 *) Improve efficiency of mem_gets: don't search whole buffer each time
5456 [Jeremy Shapiro <jnshapir@us.ibm.com>]
5458 *) New -hex option for openssl rand.
5461 *) Print out UTF8String and NumericString when parsing ASN1.
5464 *) Support NumericString type for name components.
5467 *) Allow CC in the environment to override the automatically chosen
5468 compiler. Note that nothing is done to ensure flags work with the
5472 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
5474 *) Properly check EVP_VerifyFinal() and similar return values
5476 [Ben Laurie, Bodo Moeller, Google Security Team]
5478 *) Enable TLS extensions by default.
5481 *) Allow the CHIL engine to be loaded, whether the application is
5482 multithreaded or not. (This does not release the developer from the
5483 obligation to set up the dynamic locking callbacks.)
5484 [Sander Temme <sander@temme.net>]
5486 *) Use correct exit code if there is an error in dgst command.
5487 [Steve Henson; problem pointed out by Roland Dirlewanger]
5489 *) Tweak Configure so that you need to say "experimental-jpake" to enable
5490 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
5493 *) Add experimental JPAKE support, including demo authentication in
5494 s_client and s_server.
5497 *) Set the comparison function in v3_addr_canonize().
5498 [Rob Austein <sra@hactrn.net>]
5500 *) Add support for XMPP STARTTLS in s_client.
5501 [Philip Paeps <philip@freebsd.org>]
5503 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
5504 to ensure that even with this option, only ciphersuites in the
5505 server's preference list will be accepted. (Note that the option
5506 applies only when resuming a session, so the earlier behavior was
5507 just about the algorithm choice for symmetric cryptography.)
5510 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
5512 *) Fix NULL pointer dereference if a DTLS server received
5513 ChangeCipherSpec as first record (CVE-2009-1386).
5516 *) Fix a state transition in s3_srvr.c and d1_srvr.c
5517 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
5520 *) The fix in 0.9.8c that supposedly got rid of unsafe
5521 double-checked locking was incomplete for RSA blinding,
5522 addressing just one layer of what turns out to have been
5523 doubly unsafe triple-checked locking.
5525 So now fix this for real by retiring the MONT_HELPER macro
5526 in crypto/rsa/rsa_eay.c.
5528 [Bodo Moeller; problem pointed out by Marius Schilder]
5530 *) Various precautionary measures:
5532 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
5534 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
5535 (NB: This would require knowledge of the secret session ticket key
5536 to exploit, in which case you'd be SOL either way.)
5538 - Change bn_nist.c so that it will properly handle input BIGNUMs
5539 outside the expected range.
5541 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
5544 [Neel Mehta, Bodo Moeller]
5546 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
5547 the load fails. Useful for distros.
5548 [Ben Laurie and the FreeBSD team]
5550 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
5553 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
5556 *) Expand ENGINE to support engine supplied SSL client certificate functions.
5558 This work was sponsored by Logica.
5561 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
5562 keystores. Support for SSL/TLS client authentication too.
5563 Not compiled unless enable-capieng specified to Configure.
5565 This work was sponsored by Logica.
5568 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
5569 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
5570 attribute creation routines such as certificate requests and PKCS#12
5574 Changes between 0.9.8g and 0.9.8h [28 May 2008]
5576 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
5577 handshake which could lead to a client crash as found using the
5578 Codenomicon TLS test suite (CVE-2008-1672)
5579 [Steve Henson, Mark Cox]
5581 *) Fix double free in TLS server name extensions which could lead to
5582 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
5585 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
5587 Clear the error queue to ensure that error entries left from
5588 older function calls do not interfere with the correct operation.
5589 [Lutz Jaenicke, Erik de Castro Lopo]
5591 *) Remove root CA certificates of commercial CAs:
5593 The OpenSSL project does not recommend any specific CA and does not
5594 have any policy with respect to including or excluding any CA.
5595 Therefore it does not make any sense to ship an arbitrary selection
5596 of root CA certificates with the OpenSSL software.
5599 *) RSA OAEP patches to fix two separate invalid memory reads.
5600 The first one involves inputs when 'lzero' is greater than
5601 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
5602 before the beginning of from). The second one involves inputs where
5603 the 'db' section contains nothing but zeroes (there is a one-byte
5604 invalid read after the end of 'db').
5605 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5607 *) Partial backport from 0.9.9-dev:
5609 Introduce bn_mul_mont (dedicated Montgomery multiplication
5610 procedure) as a candidate for BIGNUM assembler implementation.
5611 While 0.9.9-dev uses assembler for various architectures, only
5612 x86_64 is available by default here in the 0.9.8 branch, and
5613 32-bit x86 is available through a compile-time setting.
5615 To try the 32-bit x86 assembler implementation, use Configure
5616 option "enable-montasm" (which exists only for this backport).
5618 As "enable-montasm" for 32-bit x86 disclaims code stability
5619 anyway, in this constellation we activate additional code
5620 backported from 0.9.9-dev for further performance improvements,
5621 namely BN_from_montgomery_word. (To enable this otherwise,
5622 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
5624 [Andy Polyakov (backport partially by Bodo Moeller)]
5626 *) Add TLS session ticket callback. This allows an application to set
5627 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
5628 values. This is useful for key rollover for example where several key
5629 sets may exist with different names.
5632 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
5633 This was broken until now in 0.9.8 releases, such that the only way
5634 a registered ENGINE could be used (assuming it initialises
5635 successfully on the host) was to explicitly set it as the default
5636 for the relevant algorithms. This is in contradiction with 0.9.7
5637 behaviour and the documentation. With this fix, when an ENGINE is
5638 registered into a given algorithm's table of implementations, the
5639 'uptodate' flag is reset so that auto-discovery will be used next
5640 time a new context for that algorithm attempts to select an
5642 [Ian Lister (tweaked by Geoff Thorpe)]
5644 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
5645 implementation in the following ways:
5647 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
5650 Lack of BER streaming support means one pass streaming processing is
5651 only supported if data is detached: setting the streaming flag is
5652 ignored for embedded content.
5654 CMS support is disabled by default and must be explicitly enabled
5655 with the enable-cms configuration option.
5658 *) Update the GMP engine glue to do direct copies between BIGNUM and
5659 mpz_t when openssl and GMP use the same limb size. Otherwise the
5660 existing "conversion via a text string export" trick is still used.
5661 [Paul Sheer <paulsheer@gmail.com>]
5663 *) Zlib compression BIO. This is a filter BIO which compressed and
5664 uncompresses any data passed through it.
5667 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
5668 RFC3394 compatible AES key wrapping.
5671 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
5672 sets string data without copying. X509_ALGOR_set0() and
5673 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
5674 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
5675 from an X509_ATTRIBUTE structure optionally checking it occurs only
5676 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
5680 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
5681 to get the expected BN_FLG_CONSTTIME behavior.
5682 [Bodo Moeller (Google)]
5686 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
5687 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
5688 - added some more tests to do_tests.pl
5689 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
5690 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
5691 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
5692 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
5693 - various changes to netware.pl to enable gcc-cross builds on Win32
5695 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
5696 - various changes to fix missing prototype warnings
5697 - fixed x86nasm.pl to create correct asm files for NASM COFF output
5698 - added AES, WHIRLPOOL and CPUID assembler code to build files
5699 - added missing AES assembler make rules to mk1mf.pl
5700 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
5701 [Guenter Knauf <eflash@gmx.net>]
5703 *) Implement certificate status request TLS extension defined in RFC3546.
5704 A client can set the appropriate parameters and receive the encoded
5705 OCSP response via a callback. A server can query the supplied parameters
5706 and set the encoded OCSP response in the callback. Add simplified examples
5707 to s_client and s_server.
5710 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
5712 *) Fix various bugs:
5713 + Binary incompatibility of ssl_ctx_st structure
5714 + DTLS interoperation with non-compliant servers
5715 + Don't call get_session_cb() without proposed session
5716 + Fix ia64 assembler code
5717 [Andy Polyakov, Steve Henson]
5719 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
5721 *) DTLS Handshake overhaul. There were longstanding issues with
5722 OpenSSL DTLS implementation, which were making it impossible for
5723 RFC 4347 compliant client to communicate with OpenSSL server.
5724 Unfortunately just fixing these incompatibilities would "cut off"
5725 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
5726 server keeps tolerating non RFC compliant syntax. The opposite is
5727 not true, 0.9.8f client can not communicate with earlier server.
5728 This update even addresses CVE-2007-4995.
5731 *) Changes to avoid need for function casts in OpenSSL: some compilers
5732 (gcc 4.2 and later) reject their use.
5733 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
5736 *) Add RFC4507 support to OpenSSL. This includes the corrections in
5737 RFC4507bis. The encrypted ticket format is an encrypted encoded
5738 SSL_SESSION structure, that way new session features are automatically
5741 If a client application caches session in an SSL_SESSION structure
5742 support is transparent because tickets are now stored in the encoded
5745 The SSL_CTX structure automatically generates keys for ticket
5746 protection in servers so again support should be possible
5747 with no application modification.
5749 If a client or server wishes to disable RFC4507 support then the option
5750 SSL_OP_NO_TICKET can be set.
5752 Add a TLS extension debugging callback to allow the contents of any client
5753 or server extensions to be examined.
5755 This work was sponsored by Google.
5758 *) Add initial support for TLS extensions, specifically for the server_name
5759 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5760 have new members for a host name. The SSL data structure has an
5761 additional member SSL_CTX *initial_ctx so that new sessions can be
5762 stored in that context to allow for session resumption, even after the
5763 SSL has been switched to a new SSL_CTX in reaction to a client's
5764 server_name extension.
5766 New functions (subject to change):
5768 SSL_get_servername()
5769 SSL_get_servername_type()
5772 New CTRL codes and macros (subject to change):
5774 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5775 - SSL_CTX_set_tlsext_servername_callback()
5776 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5777 - SSL_CTX_set_tlsext_servername_arg()
5778 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5780 openssl s_client has a new '-servername ...' option.
5782 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5783 '-key2 ...', '-servername_fatal' (subject to change). This allows
5784 testing the HostName extension for a specific single host name ('-cert'
5785 and '-key' remain fallbacks for handshakes without HostName
5786 negotiation). If the unrecognized_name alert has to be sent, this by
5787 default is a warning; it becomes fatal with the '-servername_fatal'
5790 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
5792 *) Add AES and SSE2 assembly language support to VC++ build.
5795 *) Mitigate attack on final subtraction in Montgomery reduction.
5798 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
5799 (which previously caused an internal error).
5802 *) Squeeze another 10% out of IGE mode when in != out.
5805 *) AES IGE mode speedup.
5806 [Dean Gaudet (Google)]
5808 *) Add the Korean symmetric 128-bit cipher SEED (see
5809 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
5810 add SEED ciphersuites from RFC 4162:
5812 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
5813 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
5814 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
5815 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
5817 To minimize changes between patchlevels in the OpenSSL 0.9.8
5818 series, SEED remains excluded from compilation unless OpenSSL
5819 is configured with 'enable-seed'.
5820 [KISA, Bodo Moeller]
5822 *) Mitigate branch prediction attacks, which can be practical if a
5823 single processor is shared, allowing a spy process to extract
5824 information. For detailed background information, see
5825 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
5826 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
5827 and Necessary Software Countermeasures"). The core of the change
5828 are new versions BN_div_no_branch() and
5829 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
5830 respectively, which are slower, but avoid the security-relevant
5831 conditional branches. These are automatically called by BN_div()
5832 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
5833 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
5834 remove a conditional branch.
5836 BN_FLG_CONSTTIME is the new name for the previous
5837 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
5838 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
5839 in the exponent causes BN_mod_exp_mont() to use the alternative
5840 implementation in BN_mod_exp_mont_consttime().) The old name
5841 remains as a deprecated alias.
5843 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
5844 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
5845 constant-time implementations for more than just exponentiation.
5846 Here too the old name is kept as a deprecated alias.
5848 BN_BLINDING_new() will now use BN_dup() for the modulus so that
5849 the BN_BLINDING structure gets an independent copy of the
5850 modulus. This means that the previous "BIGNUM *m" argument to
5851 BN_BLINDING_new() and to BN_BLINDING_create_param() now
5852 essentially becomes "const BIGNUM *m", although we can't actually
5853 change this in the header file before 0.9.9. It allows
5854 RSA_setup_blinding() to use BN_with_flags() on the modulus to
5855 enable BN_FLG_CONSTTIME.
5857 [Matthew D Wood (Intel Corp)]
5859 *) In the SSL/TLS server implementation, be strict about session ID
5860 context matching (which matters if an application uses a single
5861 external cache for different purposes). Previously,
5862 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
5863 set. This did ensure strict client verification, but meant that,
5864 with applications using a single external cache for quite
5865 different requirements, clients could circumvent ciphersuite
5866 restrictions for a given session ID context by starting a session
5867 in a different context.
5870 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5871 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5872 authentication-only ciphersuites.
5875 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
5876 not complete and could lead to a possible single byte overflow
5877 (CVE-2007-5135) [Ben Laurie]
5879 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
5881 *) Since AES128 and AES256 (and similarly Camellia128 and
5882 Camellia256) share a single mask bit in the logic of
5883 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5884 kludge to work properly if AES128 is available and AES256 isn't
5885 (or if Camellia128 is available and Camellia256 isn't).
5888 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
5889 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
5890 When a point or a seed is encoded in a BIT STRING, we need to
5891 prevent the removal of trailing zero bits to get the proper DER
5892 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
5893 of a NamedBitList, for which trailing 0 bits need to be removed.)
5896 *) Have SSL/TLS server implementation tolerate "mismatched" record
5897 protocol version while receiving ClientHello even if the
5898 ClientHello is fragmented. (The server can't insist on the
5899 particular protocol version it has chosen before the ServerHello
5900 message has informed the client about his choice.)
5903 *) Add RFC 3779 support.
5904 [Rob Austein for ARIN, Ben Laurie]
5906 *) Load error codes if they are not already present instead of using a
5907 static variable. This allows them to be cleanly unloaded and reloaded.
5908 Improve header file function name parsing.
5911 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
5912 or CAPABILITY handshake as required by RFCs.
5915 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
5917 *) Introduce limits to prevent malicious keys being able to
5918 cause a denial of service. (CVE-2006-2940)
5919 [Steve Henson, Bodo Moeller]
5921 *) Fix ASN.1 parsing of certain invalid structures that can result
5922 in a denial of service. (CVE-2006-2937) [Steve Henson]
5924 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5925 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5927 *) Fix SSL client code which could crash if connecting to a
5928 malicious SSLv2 server. (CVE-2006-4343)
5929 [Tavis Ormandy and Will Drewry, Google Security Team]
5931 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
5932 match only those. Before that, "AES256-SHA" would be interpreted
5933 as a pattern and match "AES128-SHA" too (since AES128-SHA got
5934 the same strength classification in 0.9.7h) as we currently only
5935 have a single AES bit in the ciphersuite description bitmap.
5936 That change, however, also applied to ciphersuite strings such as
5937 "RC4-MD5" that intentionally matched multiple ciphersuites --
5938 namely, SSL 2.0 ciphersuites in addition to the more common ones
5939 from SSL 3.0/TLS 1.0.
5941 So we change the selection algorithm again: Naming an explicit
5942 ciphersuite selects this one ciphersuite, and any other similar
5943 ciphersuite (same bitmap) from *other* protocol versions.
5944 Thus, "RC4-MD5" again will properly select both the SSL 2.0
5945 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
5947 Since SSL 2.0 does not have any ciphersuites for which the
5948 128/256 bit distinction would be relevant, this works for now.
5949 The proper fix will be to use different bits for AES128 and
5950 AES256, which would have avoided the problems from the beginning;
5951 however, bits are scarce, so we can only do this in a new release
5952 (not just a patchlevel) when we can change the SSL_CIPHER
5953 definition to split the single 'unsigned long mask' bitmap into
5954 multiple values to extend the available space.
5958 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
5960 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5961 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5963 *) Add AES IGE and biIGE modes.
5966 *) Change the Unix randomness entropy gathering to use poll() when
5967 possible instead of select(), since the latter has some
5968 undesirable limitations.
5969 [Darryl Miles via Richard Levitte and Bodo Moeller]
5971 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
5972 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
5973 cannot be implicitly activated as part of, e.g., the "AES" alias.
5974 However, please upgrade to OpenSSL 0.9.9[-dev] for
5975 non-experimental use of the ECC ciphersuites to get TLS extension
5976 support, which is required for curve and point format negotiation
5977 to avoid potential handshake problems.
5980 *) Disable rogue ciphersuites:
5982 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5983 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5984 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5986 The latter two were purportedly from
5987 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5990 Also deactivate the remaining ciphersuites from
5991 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5992 unofficial, and the ID has long expired.
5995 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5996 dual-core machines) and other potential thread-safety issues.
5999 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
6000 versions), which is now available for royalty-free use
6001 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
6002 Also, add Camellia TLS ciphersuites from RFC 4132.
6004 To minimize changes between patchlevels in the OpenSSL 0.9.8
6005 series, Camellia remains excluded from compilation unless OpenSSL
6006 is configured with 'enable-camellia'.
6009 *) Disable the padding bug check when compression is in use. The padding
6010 bug check assumes the first packet is of even length, this is not
6011 necessarily true if compression is enabled and can result in false
6012 positives causing handshake failure. The actual bug test is ancient
6013 code so it is hoped that implementations will either have fixed it by
6014 now or any which still have the bug do not support compression.
6017 Changes between 0.9.8a and 0.9.8b [04 May 2006]
6019 *) When applying a cipher rule check to see if string match is an explicit
6020 cipher suite and only match that one cipher suite if it is.
6023 *) Link in manifests for VC++ if needed.
6024 [Austin Ziegler <halostatue@gmail.com>]
6026 *) Update support for ECC-based TLS ciphersuites according to
6027 draft-ietf-tls-ecc-12.txt with proposed changes (but without
6028 TLS extensions, which are supported starting with the 0.9.9
6029 branch, not in the OpenSSL 0.9.8 branch).
6032 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
6033 opaque EVP_CIPHER_CTX handling.
6036 *) Fixes and enhancements to zlib compression code. We now only use
6037 "zlib1.dll" and use the default __cdecl calling convention on Win32
6038 to conform with the standards mentioned here:
6039 http://www.zlib.net/DLL_FAQ.txt
6040 Static zlib linking now works on Windows and the new --with-zlib-include
6041 --with-zlib-lib options to Configure can be used to supply the location
6042 of the headers and library. Gracefully handle case where zlib library
6046 *) Several fixes and enhancements to the OID generation code. The old code
6047 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
6048 handle numbers larger than ULONG_MAX, truncated printing and had a
6049 non standard OBJ_obj2txt() behaviour.
6052 *) Add support for building of engines under engine/ as shared libraries
6053 under VC++ build system.
6056 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
6057 Hopefully, we will not see any false combination of paths any more.
6060 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
6062 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
6063 (part of SSL_OP_ALL). This option used to disable the
6064 countermeasure against man-in-the-middle protocol-version
6065 rollback in the SSL 2.0 server implementation, which is a bad
6066 idea. (CVE-2005-2969)
6068 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
6069 for Information Security, National Institute of Advanced Industrial
6070 Science and Technology [AIST], Japan)]
6072 *) Add two function to clear and return the verify parameter flags.
6075 *) Keep cipherlists sorted in the source instead of sorting them at
6076 runtime, thus removing the need for a lock.
6079 *) Avoid some small subgroup attacks in Diffie-Hellman.
6080 [Nick Mathewson and Ben Laurie]
6082 *) Add functions for well-known primes.
6085 *) Extended Windows CE support.
6086 [Satoshi Nakamura and Andy Polyakov]
6088 *) Initialize SSL_METHOD structures at compile time instead of during
6089 runtime, thus removing the need for a lock.
6092 *) Make PKCS7_decrypt() work even if no certificate is supplied by
6093 attempting to decrypt each encrypted key in turn. Add support to
6097 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
6099 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
6102 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
6105 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
6106 key into the same file any more.
6109 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
6112 *) Add -utf8 command line and config file option to 'ca'.
6113 [Stefan <stf@udoma.org]
6115 *) Removed the macro des_crypt(), as it seems to conflict with some
6116 libraries. Use DES_crypt().
6119 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
6120 involves renaming the source and generated shared-libs for
6121 both. The engines will accept the corrected or legacy ids
6122 ('ncipher' and '4758_cca' respectively) when binding. NB,
6123 this only applies when building 'shared'.
6124 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
6126 *) Add attribute functions to EVP_PKEY structure. Modify
6127 PKCS12_create() to recognize a CSP name attribute and
6128 use it. Make -CSP option work again in pkcs12 utility.
6131 *) Add new functionality to the bn blinding code:
6132 - automatic re-creation of the BN_BLINDING parameters after
6133 a fixed number of uses (currently 32)
6134 - add new function for parameter creation
6135 - introduce flags to control the update behaviour of the
6136 BN_BLINDING parameters
6137 - hide BN_BLINDING structure
6138 Add a second BN_BLINDING slot to the RSA structure to improve
6139 performance when a single RSA object is shared among several
6143 *) Add support for DTLS.
6144 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
6146 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
6147 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
6150 *) Remove buggy and incomplete DH cert support from
6151 ssl/ssl_rsa.c and ssl/s3_both.c
6154 *) Use SHA-1 instead of MD5 as the default digest algorithm for
6155 the apps/openssl applications.
6158 *) Compile clean with "-Wall -Wmissing-prototypes
6159 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
6160 DEBUG_SAFESTACK must also be set.
6163 *) Change ./Configure so that certain algorithms can be disabled by default.
6164 The new counterpiece to "no-xxx" is "enable-xxx".
6166 The patented RC5 and MDC2 algorithms will now be disabled unless
6167 "enable-rc5" and "enable-mdc2", respectively, are specified.
6169 (IDEA remains enabled despite being patented. This is because IDEA
6170 is frequently required for interoperability, and there is no license
6171 fee for non-commercial use. As before, "no-idea" can be used to
6172 avoid this algorithm.)
6176 *) Add processing of proxy certificates (see RFC 3820). This work was
6177 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
6178 EGEE (Enabling Grids for E-science in Europe).
6181 *) RC4 performance overhaul on modern architectures/implementations, such
6182 as Intel P4, IA-64 and AMD64.
6185 *) New utility extract-section.pl. This can be used specify an alternative
6186 section number in a pod file instead of having to treat each file as
6187 a separate case in Makefile. This can be done by adding two lines to the
6190 =for comment openssl_section:XXX
6192 The blank line is mandatory.
6196 *) New arguments -certform, -keyform and -pass for s_client and s_server
6197 to allow alternative format key and certificate files and passphrase
6201 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
6202 update associated structures and add various utility functions.
6204 Add new policy related verify parameters, include policy checking in
6205 standard verify code. Enhance 'smime' application with extra parameters
6206 to support policy checking and print out.
6209 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
6210 Nehemiah processors. These extensions support AES encryption in hardware
6211 as well as RNG (though RNG support is currently disabled).
6212 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
6214 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
6217 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
6218 [Andy Polyakov and a number of other people]
6220 *) Improved PowerPC platform support. Most notably BIGNUM assembler
6221 implementation contributed by IBM.
6222 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
6224 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
6225 exponent rather than 'unsigned long'. There is a corresponding change to
6226 the new 'rsa_keygen' element of the RSA_METHOD structure.
6227 [Jelte Jansen, Geoff Thorpe]
6229 *) Functionality for creating the initial serial number file is now
6230 moved from CA.pl to the 'ca' utility with a new option -create_serial.
6232 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
6233 number file to 1, which is bound to cause problems. To avoid
6234 the problems while respecting compatibility between different 0.9.7
6235 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
6236 CA.pl for serial number initialization. With the new release 0.9.8,
6237 we can fix the problem directly in the 'ca' utility.)
6240 *) Reduced header interdependencies by declaring more opaque objects in
6241 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
6242 give fewer recursive includes, which could break lazy source code - so
6243 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
6244 developers should define this symbol when building and using openssl to
6245 ensure they track the recommended behaviour, interfaces, [etc], but
6246 backwards-compatible behaviour prevails when this isn't defined.
6249 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
6252 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
6253 This will generate a random key of the appropriate length based on the
6254 cipher context. The EVP_CIPHER can provide its own random key generation
6255 routine to support keys of a specific form. This is used in the des and
6256 3des routines to generate a key of the correct parity. Update S/MIME
6257 code to use new functions and hence generate correct parity DES keys.
6258 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
6259 valid (weak or incorrect parity).
6262 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
6263 as looking them up. This is useful when the verified structure may contain
6264 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
6265 present unless the new PKCS7_NO_CRL flag is asserted.
6268 *) Extend ASN1 oid configuration module. It now additionally accepts the
6271 shortName = some long name, 1.2.3.4
6274 *) Reimplemented the BN_CTX implementation. There is now no more static
6275 limitation on the number of variables it can handle nor the depth of the
6276 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
6277 information can now expand as required, and rather than having a single
6278 static array of bignums, BN_CTX now uses a linked-list of such arrays
6279 allowing it to expand on demand whilst maintaining the usefulness of
6280 BN_CTX's "bundling".
6283 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
6284 to allow all RSA operations to function using a single BN_CTX.
6287 *) Preliminary support for certificate policy evaluation and checking. This
6288 is initially intended to pass the tests outlined in "Conformance Testing
6289 of Relying Party Client Certificate Path Processing Logic" v1.07.
6292 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
6293 remained unused and not that useful. A variety of other little bignum
6294 tweaks and fixes have also been made continuing on from the audit (see
6298 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
6299 associated ASN1, EVP and SSL functions and old ASN1 macros.
6302 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
6303 and this should never fail. So the return value from the use of
6304 BN_set_word() (which can fail due to needless expansion) is now deprecated;
6305 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
6308 *) BN_CTX_get() should return zero-valued bignums, providing the same
6309 initialised value as BN_new().
6310 [Geoff Thorpe, suggested by Ulf Möller]
6312 *) Support for inhibitAnyPolicy certificate extension.
6315 *) An audit of the BIGNUM code is underway, for which debugging code is
6316 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
6317 is considered valid when processing BIGNUMs, and causes execution to
6318 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
6319 further steps are taken to deliberately pollute unused data in BIGNUM
6320 structures to try and expose faulty code further on. For now, openssl will
6321 (in its default mode of operation) continue to tolerate the inconsistent
6322 forms that it has tolerated in the past, but authors and packagers should
6323 consider trying openssl and their own applications when compiled with
6324 these debugging symbols defined. It will help highlight potential bugs in
6325 their own code, and will improve the test coverage for OpenSSL itself. At
6326 some point, these tighter rules will become openssl's default to improve
6327 maintainability, though the assert()s and other overheads will remain only
6328 in debugging configurations. See bn.h for more details.
6329 [Geoff Thorpe, Nils Larsch, Ulf Möller]
6331 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
6332 that can only be obtained through BN_CTX_new() (which implicitly
6333 initialises it). The presence of this function only made it possible
6334 to overwrite an existing structure (and cause memory leaks).
6337 *) Because of the callback-based approach for implementing LHASH as a
6338 template type, lh_insert() adds opaque objects to hash-tables and
6339 lh_doall() or lh_doall_arg() are typically used with a destructor callback
6340 to clean up those corresponding objects before destroying the hash table
6341 (and losing the object pointers). So some over-zealous constifications in
6342 LHASH have been relaxed so that lh_insert() does not take (nor store) the
6343 objects as "const" and the lh_doall[_arg] callback wrappers are not
6344 prototyped to have "const" restrictions on the object pointers they are
6345 given (and so aren't required to cast them away any more).
6348 *) The tmdiff.h API was so ugly and minimal that our own timing utility
6349 (speed) prefers to use its own implementation. The two implementations
6350 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
6351 its object type properly exposed (MS_TM) instead of casting to/from "char
6352 *". This may still change yet if someone realises MS_TM and "ms_time_***"
6353 aren't necessarily the greatest nomenclatures - but this is what was used
6354 internally to the implementation so I've used that for now.
6357 *) Ensure that deprecated functions do not get compiled when
6358 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
6359 the self-tests were still using deprecated key-generation functions so
6360 these have been updated also.
6363 *) Reorganise PKCS#7 code to separate the digest location functionality
6364 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
6365 New function PKCS7_set_digest() to set the digest type for PKCS#7
6366 digestedData type. Add additional code to correctly generate the
6367 digestedData type and add support for this type in PKCS7 initialization
6371 *) New function PKCS7_set0_type_other() this initializes a PKCS7
6372 structure of type "other".
6375 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
6376 sure the loop does correctly stop and breaking ("division by zero")
6377 modulus operations are not performed. The (pre-generated) prime
6378 table crypto/bn/bn_prime.h was already correct, but it could not be
6379 re-generated on some platforms because of the "division by zero"
6380 situation in the script.
6381 [Ralf S. Engelschall]
6383 *) Update support for ECC-based TLS ciphersuites according to
6384 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
6385 SHA-1 now is only used for "small" curves (where the
6386 representation of a field element takes up to 24 bytes); for
6387 larger curves, the field element resulting from ECDH is directly
6388 used as premaster secret.
6389 [Douglas Stebila (Sun Microsystems Laboratories)]
6391 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
6392 curve secp160r1 to the tests.
6393 [Douglas Stebila (Sun Microsystems Laboratories)]
6395 *) Add the possibility to load symbols globally with DSO.
6396 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
6398 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
6399 control of the error stack.
6402 *) Add support for STORE in ENGINE.
6405 *) Add the STORE type. The intention is to provide a common interface
6406 to certificate and key stores, be they simple file-based stores, or
6407 HSM-type store, or LDAP stores, or...
6408 NOTE: The code is currently UNTESTED and isn't really used anywhere.
6411 *) Add a generic structure called OPENSSL_ITEM. This can be used to
6412 pass a list of arguments to any function as well as provide a way
6413 for a function to pass data back to the caller.
6416 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
6417 works like BUF_strdup() but can be used to duplicate a portion of
6418 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
6422 *) Add the function sk_find_ex() which works like sk_find(), but will
6423 return an index to an element even if an exact match couldn't be
6424 found. The index is guaranteed to point at the element where the
6425 searched-for key would be inserted to preserve sorting order.
6428 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
6429 takes an extra flags argument for optional functionality. Currently,
6430 the following flags are defined:
6432 OBJ_BSEARCH_VALUE_ON_NOMATCH
6433 This one gets OBJ_bsearch_ex() to return a pointer to the first
6434 element where the comparing function returns a negative or zero
6437 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
6438 This one gets OBJ_bsearch_ex() to return a pointer to the first
6439 element where the comparing function returns zero. This is useful
6440 if there are more than one element where the comparing function
6444 *) Make it possible to create self-signed certificates with 'openssl ca'
6445 in such a way that the self-signed certificate becomes part of the
6446 CA database and uses the same mechanisms for serial number generation
6447 as all other certificate signing. The new flag '-selfsign' enables
6448 this functionality. Adapt CA.sh and CA.pl.in.
6451 *) Add functionality to check the public key of a certificate request
6452 against a given private. This is useful to check that a certificate
6453 request can be signed by that key (self-signing).
6456 *) Make it possible to have multiple active certificates with the same
6457 subject in the CA index file. This is done only if the keyword
6458 'unique_subject' is set to 'no' in the main CA section (default
6459 if 'CA_default') of the configuration file. The value is saved
6460 with the database itself in a separate index attribute file,
6461 named like the index file with '.attr' appended to the name.
6464 *) Generate multi-valued AVAs using '+' notation in config files for
6468 *) Support for nameConstraints certificate extension.
6471 *) Support for policyConstraints certificate extension.
6474 *) Support for policyMappings certificate extension.
6477 *) Make sure the default DSA_METHOD implementation only uses its
6478 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
6479 and change its own handlers to be NULL so as to remove unnecessary
6480 indirection. This lets alternative implementations fallback to the
6481 default implementation more easily.
6484 *) Support for directoryName in GeneralName related extensions
6488 *) Make it possible to link applications using Makefile.shared.
6489 Make that possible even when linking against static libraries!
6492 *) Support for single pass processing for S/MIME signing. This now
6493 means that S/MIME signing can be done from a pipe, in addition
6494 cleartext signing (multipart/signed type) is effectively streaming
6495 and the signed data does not need to be all held in memory.
6497 This is done with a new flag PKCS7_STREAM. When this flag is set
6498 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
6499 is done after the data is output (and digests calculated) in
6500 SMIME_write_PKCS7().
6503 *) Add full support for -rpath/-R, both in shared libraries and
6504 applications, at least on the platforms where it's known how
6508 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
6509 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
6510 will now compute a table of multiples of the generator that
6511 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
6512 faster (notably in the case of a single point multiplication,
6513 scalar * generator).
6514 [Nils Larsch, Bodo Moeller]
6516 *) IPv6 support for certificate extensions. The various extensions
6517 which use the IP:a.b.c.d can now take IPv6 addresses using the
6518 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
6522 *) Added an ENGINE that implements RSA by performing private key
6523 exponentiations with the GMP library. The conversions to and from
6524 GMP's mpz_t format aren't optimised nor are any montgomery forms
6525 cached, and on x86 it appears OpenSSL's own performance has caught up.
6526 However there are likely to be other architectures where GMP could
6527 provide a boost. This ENGINE is not built in by default, but it can be
6528 specified at Configure time and should be accompanied by the necessary
6529 linker additions, eg;
6530 ./config -DOPENSSL_USE_GMP -lgmp
6533 *) "openssl engine" will not display ENGINE/DSO load failure errors when
6534 testing availability of engines with "-t" - the old behaviour is
6535 produced by increasing the feature's verbosity with "-tt".
6538 *) ECDSA routines: under certain error conditions uninitialized BN objects
6539 could be freed. Solution: make sure initialization is performed early
6540 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
6544 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
6545 and DH_METHOD (eg. by ENGINE implementations) to override the normal
6546 software implementations. For DSA and DH, parameter generation can
6547 also be overridden by providing the appropriate method callbacks.
6550 *) Change the "progress" mechanism used in key-generation and
6551 primality testing to functions that take a new BN_GENCB pointer in
6552 place of callback/argument pairs. The new API functions have "_ex"
6553 postfixes and the older functions are reimplemented as wrappers for
6554 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
6555 declarations of the old functions to help (graceful) attempts to
6556 migrate to the new functions. Also, the new key-generation API
6557 functions operate on a caller-supplied key-structure and return
6558 success/failure rather than returning a key or NULL - this is to
6559 help make "keygen" another member function of RSA_METHOD etc.
6561 Example for using the new callback interface:
6563 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
6567 BN_GENCB_set(&my_cb, my_callback, my_arg);
6569 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
6570 /* For the meaning of a, b in calls to my_callback(), see the
6571 * documentation of the function that calls the callback.
6572 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
6573 * my_callback should return 1 if it wants BN_is_prime_ex()
6574 * to continue, or 0 to stop.
6579 *) Change the ZLIB compression method to be stateful, and make it
6580 available to TLS with the number defined in
6581 draft-ietf-tls-compression-04.txt.
6584 *) Add the ASN.1 structures and functions for CertificatePair, which
6585 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
6587 CertificatePair ::= SEQUENCE {
6588 forward [0] Certificate OPTIONAL,
6589 reverse [1] Certificate OPTIONAL,
6590 -- at least one of the pair shall be present -- }
6592 Also implement the PEM functions to read and write certificate
6593 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
6595 This needed to be defined, mostly for the sake of the LDAP
6596 attribute crossCertificatePair, but may prove useful elsewhere as
6600 *) Make it possible to inhibit symlinking of shared libraries in
6601 Makefile.shared, for Cygwin's sake.
6604 *) Extend the BIGNUM API by creating a function
6605 void BN_set_negative(BIGNUM *a, int neg);
6606 and a macro that behave like
6607 int BN_is_negative(const BIGNUM *a);
6609 to avoid the need to access 'a->neg' directly in applications.
6612 *) Implement fast modular reduction for pseudo-Mersenne primes
6613 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
6614 EC_GROUP_new_curve_GFp() will now automatically use this
6616 [Nils Larsch <nla@trustcenter.de>]
6618 *) Add new lock type (CRYPTO_LOCK_BN).
6621 *) Change the ENGINE framework to automatically load engines
6622 dynamically from specific directories unless they could be
6623 found to already be built in or loaded. Move all the
6624 current engines except for the cryptodev one to a new
6626 The engines in engines/ are built as shared libraries if
6627 the "shared" options was given to ./Configure or ./config.
6628 Otherwise, they are inserted in libcrypto.a.
6629 /usr/local/ssl/engines is the default directory for dynamic
6630 engines, but that can be overridden at configure time through
6631 the usual use of --prefix and/or --openssldir, and at run
6632 time with the environment variable OPENSSL_ENGINES.
6633 [Geoff Thorpe and Richard Levitte]
6635 *) Add Makefile.shared, a helper makefile to build shared
6636 libraries. Adapt Makefile.org.
6639 *) Add version info to Win32 DLLs.
6640 [Peter 'Luna' Runestig" <peter@runestig.com>]
6642 *) Add new 'medium level' PKCS#12 API. Certificates and keys
6643 can be added using this API to created arbitrary PKCS#12
6644 files while avoiding the low level API.
6646 New options to PKCS12_create(), key or cert can be NULL and
6647 will then be omitted from the output file. The encryption
6648 algorithm NIDs can be set to -1 for no encryption, the mac
6649 iteration count can be set to 0 to omit the mac.
6651 Enhance pkcs12 utility by making the -nokeys and -nocerts
6652 options work when creating a PKCS#12 file. New option -nomac
6653 to omit the mac, NONE can be set for an encryption algorithm.
6654 New code is modified to use the enhanced PKCS12_create()
6655 instead of the low level API.
6658 *) Extend ASN1 encoder to support indefinite length constructed
6659 encoding. This can output sequences tags and octet strings in
6660 this form. Modify pk7_asn1.c to support indefinite length
6661 encoding. This is experimental and needs additional code to
6662 be useful, such as an ASN1 bio and some enhanced streaming
6665 Extend template encode functionality so that tagging is passed
6666 down to the template encoder.
6669 *) Let 'openssl req' fail if an argument to '-newkey' is not
6670 recognized instead of using RSA as a default.
6673 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
6674 As these are not official, they are not included in "ALL";
6675 the "ECCdraft" ciphersuite group alias can be used to select them.
6676 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
6678 *) Add ECDH engine support.
6679 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
6681 *) Add ECDH in new directory crypto/ecdh/.
6682 [Douglas Stebila (Sun Microsystems Laboratories)]
6684 *) Let BN_rand_range() abort with an error after 100 iterations
6685 without success (which indicates a broken PRNG).
6688 *) Change BN_mod_sqrt() so that it verifies that the input value
6689 is really the square of the return value. (Previously,
6690 BN_mod_sqrt would show GIGO behaviour.)
6693 *) Add named elliptic curves over binary fields from X9.62, SECG,
6694 and WAP/WTLS; add OIDs that were still missing.
6696 [Sheueling Chang Shantz and Douglas Stebila
6697 (Sun Microsystems Laboratories)]
6699 *) Extend the EC library for elliptic curves over binary fields
6700 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
6703 EC_GF2m_simple_method
6707 EC_GROUP_new_curve_GF2m
6708 EC_GROUP_set_curve_GF2m
6709 EC_GROUP_get_curve_GF2m
6710 EC_POINT_set_affine_coordinates_GF2m
6711 EC_POINT_get_affine_coordinates_GF2m
6712 EC_POINT_set_compressed_coordinates_GF2m
6714 Point compression for binary fields is disabled by default for
6715 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
6718 As binary polynomials are represented as BIGNUMs, various members
6719 of the EC_GROUP and EC_POINT data structures can be shared
6720 between the implementations for prime fields and binary fields;
6721 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
6722 are essentially identical to their ..._GFp counterparts.
6723 (For simplicity, the '..._GFp' prefix has been dropped from
6724 various internal method names.)
6726 An internal 'field_div' method (similar to 'field_mul' and
6727 'field_sqr') has been added; this is used only for binary fields.
6729 [Sheueling Chang Shantz and Douglas Stebila
6730 (Sun Microsystems Laboratories)]
6732 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
6733 through methods ('mul', 'precompute_mult').
6735 The generic implementations (now internally called 'ec_wNAF_mul'
6736 and 'ec_wNAF_precomputed_mult') remain the default if these
6737 methods are undefined.
6739 [Sheueling Chang Shantz and Douglas Stebila
6740 (Sun Microsystems Laboratories)]
6742 *) New function EC_GROUP_get_degree, which is defined through
6743 EC_METHOD. For curves over prime fields, this returns the bit
6744 length of the modulus.
6746 [Sheueling Chang Shantz and Douglas Stebila
6747 (Sun Microsystems Laboratories)]
6749 *) New functions EC_GROUP_dup, EC_POINT_dup.
6750 (These simply call ..._new and ..._copy).
6752 [Sheueling Chang Shantz and Douglas Stebila
6753 (Sun Microsystems Laboratories)]
6755 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
6756 Polynomials are represented as BIGNUMs (where the sign bit is not
6757 used) in the following functions [macros]:
6760 BN_GF2m_sub [= BN_GF2m_add]
6761 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
6762 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
6763 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
6765 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
6766 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
6767 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
6768 BN_GF2m_cmp [= BN_ucmp]
6770 (Note that only the 'mod' functions are actually for fields GF(2^m).
6771 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
6773 For some functions, an the irreducible polynomial defining a
6774 field can be given as an 'unsigned int[]' with strictly
6775 decreasing elements giving the indices of those bits that are set;
6776 i.e., p[] represents the polynomial
6777 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
6779 p[0] > p[1] > ... > p[k] = 0.
6780 This applies to the following functions:
6785 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
6786 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
6788 BN_GF2m_mod_sqrt_arr
6789 BN_GF2m_mod_solve_quad_arr
6793 Conversion can be performed by the following functions:
6798 bntest.c has additional tests for binary polynomial arithmetic.
6800 Two implementations for BN_GF2m_mod_div() are available.
6801 The default algorithm simply uses BN_GF2m_mod_inv() and
6802 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
6803 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
6804 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
6806 [Sheueling Chang Shantz and Douglas Stebila
6807 (Sun Microsystems Laboratories)]
6809 *) Add new error code 'ERR_R_DISABLED' that can be used when some
6810 functionality is disabled at compile-time.
6811 [Douglas Stebila <douglas.stebila@sun.com>]
6813 *) Change default behaviour of 'openssl asn1parse' so that more
6814 information is visible when viewing, e.g., a certificate:
6816 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
6817 mode the content of non-printable OCTET STRINGs is output in a
6818 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
6819 avoid the appearance of a printable string.
6820 [Nils Larsch <nla@trustcenter.de>]
6822 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
6824 EC_GROUP_set_asn1_flag()
6825 EC_GROUP_get_asn1_flag()
6826 EC_GROUP_set_point_conversion_form()
6827 EC_GROUP_get_point_conversion_form()
6828 These control ASN1 encoding details:
6829 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
6830 has been set to OPENSSL_EC_NAMED_CURVE.
6831 - Points are encoded in uncompressed form by default; options for
6832 asn1_for are as for point2oct, namely
6833 POINT_CONVERSION_COMPRESSED
6834 POINT_CONVERSION_UNCOMPRESSED
6835 POINT_CONVERSION_HYBRID
6837 Also add 'seed' and 'seed_len' members to EC_GROUP with access
6840 EC_GROUP_get0_seed()
6841 EC_GROUP_get_seed_len()
6842 This is used only for ASN1 purposes (so far).
6843 [Nils Larsch <nla@trustcenter.de>]
6845 *) Add 'field_type' member to EC_METHOD, which holds the NID
6846 of the appropriate field type OID. The new function
6847 EC_METHOD_get_field_type() returns this value.
6848 [Nils Larsch <nla@trustcenter.de>]
6853 EC_POINT_point2hex()
6854 EC_POINT_hex2point()
6855 providing useful interfaces to EC_POINT_point2oct() and
6856 EC_POINT_oct2point().
6857 [Nils Larsch <nla@trustcenter.de>]
6859 *) Change internals of the EC library so that the functions
6860 EC_GROUP_set_generator()
6861 EC_GROUP_get_generator()
6862 EC_GROUP_get_order()
6863 EC_GROUP_get_cofactor()
6864 are implemented directly in crypto/ec/ec_lib.c and not dispatched
6865 to methods, which would lead to unnecessary code duplication when
6866 adding different types of curves.
6867 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
6869 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
6870 arithmetic, and such that modified wNAFs are generated
6871 (which avoid length expansion in many cases).
6874 *) Add a function EC_GROUP_check_discriminant() (defined via
6875 EC_METHOD) that verifies that the curve discriminant is non-zero.
6877 Add a function EC_GROUP_check() that makes some sanity tests
6878 on a EC_GROUP, its generator and order. This includes
6879 EC_GROUP_check_discriminant().
6880 [Nils Larsch <nla@trustcenter.de>]
6882 *) Add ECDSA in new directory crypto/ecdsa/.
6884 Add applications 'openssl ecparam' and 'openssl ecdsa'
6885 (these are based on 'openssl dsaparam' and 'openssl dsa').
6887 ECDSA support is also included in various other files across the
6888 library. Most notably,
6889 - 'openssl req' now has a '-newkey ecdsa:file' option;
6890 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
6891 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
6892 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
6893 them suitable for ECDSA where domain parameters must be
6894 extracted before the specific public key;
6895 - ECDSA engine support has been added.
6896 [Nils Larsch <nla@trustcenter.de>]
6898 *) Include some named elliptic curves, and add OIDs from X9.62,
6899 SECG, and WAP/WTLS. Each curve can be obtained from the new
6901 EC_GROUP_new_by_curve_name(),
6902 and the list of available named curves can be obtained with
6903 EC_get_builtin_curves().
6904 Also add a 'curve_name' member to EC_GROUP objects, which can be
6906 EC_GROUP_set_curve_name()
6907 EC_GROUP_get_curve_name()
6908 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
6910 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6911 was actually never needed) and in BN_mul(). The removal in BN_mul()
6912 required a small change in bn_mul_part_recursive() and the addition
6913 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6914 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6915 bn_sub_words() and bn_add_words() except they take arrays with
6919 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
6921 *) Cleanse PEM buffers before freeing them since they may contain
6923 [Benjamin Bennett <ben@psc.edu>]
6925 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
6926 a ciphersuite string such as "DEFAULT:RSA" cannot enable
6927 authentication-only ciphersuites.
6930 *) Since AES128 and AES256 share a single mask bit in the logic of
6931 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
6932 kludge to work properly if AES128 is available and AES256 isn't.
6935 *) Expand security boundary to match 1.1.1 module.
6938 *) Remove redundant features: hash file source, editing of test vectors
6939 modify fipsld to use external fips_premain.c signature.
6942 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
6943 run algorithm test programs.
6946 *) Make algorithm test programs more tolerant of whitespace.
6949 *) Have SSL/TLS server implementation tolerate "mismatched" record
6950 protocol version while receiving ClientHello even if the
6951 ClientHello is fragmented. (The server can't insist on the
6952 particular protocol version it has chosen before the ServerHello
6953 message has informed the client about his choice.)
6956 *) Load error codes if they are not already present instead of using a
6957 static variable. This allows them to be cleanly unloaded and reloaded.
6960 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
6962 *) Introduce limits to prevent malicious keys being able to
6963 cause a denial of service. (CVE-2006-2940)
6964 [Steve Henson, Bodo Moeller]
6966 *) Fix ASN.1 parsing of certain invalid structures that can result
6967 in a denial of service. (CVE-2006-2937) [Steve Henson]
6969 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
6970 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
6972 *) Fix SSL client code which could crash if connecting to a
6973 malicious SSLv2 server. (CVE-2006-4343)
6974 [Tavis Ormandy and Will Drewry, Google Security Team]
6976 *) Change ciphersuite string processing so that an explicit
6977 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
6978 will no longer include "AES128-SHA"), and any other similar
6979 ciphersuite (same bitmap) from *other* protocol versions (so that
6980 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
6981 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
6982 changes from 0.9.8b and 0.9.8d.
6985 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
6987 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
6988 (CVE-2006-4339) [Ben Laurie and Google Security Team]
6990 *) Change the Unix randomness entropy gathering to use poll() when
6991 possible instead of select(), since the latter has some
6992 undesirable limitations.
6993 [Darryl Miles via Richard Levitte and Bodo Moeller]
6995 *) Disable rogue ciphersuites:
6997 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
6998 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
6999 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
7001 The latter two were purportedly from
7002 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
7005 Also deactivate the remaining ciphersuites from
7006 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
7007 unofficial, and the ID has long expired.
7010 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
7011 dual-core machines) and other potential thread-safety issues.
7014 Changes between 0.9.7i and 0.9.7j [04 May 2006]
7016 *) Adapt fipsld and the build system to link against the validated FIPS
7017 module in FIPS mode.
7020 *) Fixes for VC++ 2005 build under Windows.
7023 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
7024 from a Windows bash shell such as MSYS. It is autodetected from the
7025 "config" script when run from a VC++ environment. Modify standard VC++
7026 build to use fipscanister.o from the GNU make build.
7029 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
7031 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
7032 The value now differs depending on if you build for FIPS or not.
7033 BEWARE! A program linked with a shared FIPSed libcrypto can't be
7034 safely run with a non-FIPSed libcrypto, as it may crash because of
7035 the difference induced by this change.
7038 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
7040 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
7041 (part of SSL_OP_ALL). This option used to disable the
7042 countermeasure against man-in-the-middle protocol-version
7043 rollback in the SSL 2.0 server implementation, which is a bad
7044 idea. (CVE-2005-2969)
7046 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
7047 for Information Security, National Institute of Advanced Industrial
7048 Science and Technology [AIST], Japan)]
7050 *) Minimal support for X9.31 signatures and PSS padding modes. This is
7051 mainly for FIPS compliance and not fully integrated at this stage.
7054 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
7055 the exponentiation using a fixed-length exponent. (Otherwise,
7056 the information leaked through timing could expose the secret key
7057 after many signatures; cf. Bleichenbacher's attack on DSA with
7061 *) Make a new fixed-window mod_exp implementation the default for
7062 RSA, DSA, and DH private-key operations so that the sequence of
7063 squares and multiplies and the memory access pattern are
7064 independent of the particular secret key. This will mitigate
7065 cache-timing and potential related attacks.
7067 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
7068 and this is automatically used by BN_mod_exp_mont() if the new flag
7069 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
7070 will use this BN flag for private exponents unless the flag
7071 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
7072 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
7074 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
7076 *) Change the client implementation for SSLv23_method() and
7077 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
7078 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
7079 (Previously, the SSL 2.0 backwards compatible Client Hello
7080 message format would be used even with SSL_OP_NO_SSLv2.)
7083 *) Add support for smime-type MIME parameter in S/MIME messages which some
7087 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
7088 a threadsafe manner. Modify rsa code to use new function and add calls
7089 to dsa and dh code (which had race conditions before).
7092 *) Include the fixed error library code in the C error file definitions
7093 instead of fixing them up at runtime. This keeps the error code
7094 structures constant.
7097 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
7099 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
7102 *) Fixes for newer kerberos headers. NB: the casts are needed because
7103 the 'length' field is signed on one version and unsigned on another
7104 with no (?) obvious way to tell the difference, without these VC++
7105 complains. Also the "definition" of FAR (blank) is no longer included
7106 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
7107 some needed definitions.
7110 *) Undo Cygwin change.
7113 *) Added support for proxy certificates according to RFC 3820.
7114 Because they may be a security thread to unaware applications,
7115 they must be explicitly allowed in run-time. See
7116 docs/HOWTO/proxy_certificates.txt for further information.
7119 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
7121 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
7122 server and client random values. Previously
7123 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
7124 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
7126 This change has negligible security impact because:
7128 1. Server and client random values still have 24 bytes of pseudo random
7131 2. Server and client random values are sent in the clear in the initial
7134 3. The master secret is derived using the premaster secret (48 bytes in
7135 size for static RSA ciphersuites) as well as client server and random
7138 The OpenSSL team would like to thank the UK NISCC for bringing this issue
7141 [Stephen Henson, reported by UK NISCC]
7143 *) Use Windows randomness collection on Cygwin.
7146 *) Fix hang in EGD/PRNGD query when communication socket is closed
7147 prematurely by EGD/PRNGD.
7148 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
7150 *) Prompt for pass phrases when appropriate for PKCS12 input format.
7153 *) Back-port of selected performance improvements from development
7154 branch, as well as improved support for PowerPC platforms.
7157 *) Add lots of checks for memory allocation failure, error codes to indicate
7158 failure and freeing up memory if a failure occurs.
7159 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
7161 *) Add new -passin argument to dgst.
7164 *) Perform some character comparisons of different types in X509_NAME_cmp:
7165 this is needed for some certificates that re-encode DNs into UTF8Strings
7166 (in violation of RFC3280) and can't or won't issue name rollover
7170 *) Make an explicit check during certificate validation to see that
7171 the CA setting in each certificate on the chain is correct. As a
7172 side effect always do the following basic checks on extensions,
7173 not just when there's an associated purpose to the check:
7175 - if there is an unhandled critical extension (unless the user
7176 has chosen to ignore this fault)
7177 - if the path length has been exceeded (if one is set at all)
7178 - that certain extensions fit the associated purpose (if one has
7182 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
7184 *) Avoid a race condition when CRLs are checked in a multi threaded
7185 environment. This would happen due to the reordering of the revoked
7186 entries during signature checking and serial number lookup. Now the
7187 encoding is cached and the serial number sort performed under a lock.
7188 Add new STACK function sk_is_sorted().
7191 *) Add Delta CRL to the extension code.
7194 *) Various fixes to s3_pkt.c so alerts are sent properly.
7195 [David Holmes <d.holmes@f5.com>]
7197 *) Reduce the chances of duplicate issuer name and serial numbers (in
7198 violation of RFC3280) using the OpenSSL certificate creation utilities.
7199 This is done by creating a random 64 bit value for the initial serial
7200 number when a serial number file is created or when a self signed
7201 certificate is created using 'openssl req -x509'. The initial serial
7202 number file is created using 'openssl x509 -next_serial' in CA.pl
7203 rather than being initialized to 1.
7206 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
7208 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7209 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7210 [Joe Orton, Steve Henson]
7212 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
7214 [Joe Orton, Steve Henson]
7216 *) Make it possible to have multiple active certificates with the same
7217 subject in the CA index file. This is done only if the keyword
7218 'unique_subject' is set to 'no' in the main CA section (default
7219 if 'CA_default') of the configuration file. The value is saved
7220 with the database itself in a separate index attribute file,
7221 named like the index file with '.attr' appended to the name.
7224 *) X509 verify fixes. Disable broken certificate workarounds when
7225 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
7226 keyUsage extension present. Don't accept CRLs with unhandled critical
7227 extensions: since verify currently doesn't process CRL extensions this
7228 rejects a CRL with *any* critical extensions. Add new verify error codes
7232 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
7233 A clarification of RFC2560 will require the use of OCTET STRINGs and
7234 some implementations cannot handle the current raw format. Since OpenSSL
7235 copies and compares OCSP nonces as opaque blobs without any attempt at
7236 parsing them this should not create any compatibility issues.
7239 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
7240 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
7241 this HMAC (and other) operations are several times slower than OpenSSL
7245 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
7246 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7248 *) Use the correct content when signing type "other".
7251 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
7253 *) Fix various bugs revealed by running the NISCC test suite:
7255 Stop out of bounds reads in the ASN1 code when presented with
7256 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7258 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
7260 If verify callback ignores invalid public key errors don't try to check
7261 certificate signature with the NULL public key.
7265 *) New -ignore_err option in ocsp application to stop the server
7266 exiting on the first error in a request.
7269 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7270 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7274 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7275 extra data after the compression methods not only for TLS 1.0
7276 but also for SSL 3.0 (as required by the specification).
7277 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7279 *) Change X509_certificate_type() to mark the key as exported/exportable
7280 when it's 512 *bits* long, not 512 bytes.
7283 *) Change AES_cbc_encrypt() so it outputs exact multiple of
7284 blocks during encryption.
7287 *) Various fixes to base64 BIO and non blocking I/O. On write
7288 flushes were not handled properly if the BIO retried. On read
7289 data was not being buffered properly and had various logic bugs.
7290 This also affects blocking I/O when the data being decoded is a
7294 *) Various S/MIME bugfixes and compatibility changes:
7295 output correct application/pkcs7 MIME type if
7296 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
7297 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
7298 of files as .eml work). Correctly handle very long lines in MIME
7302 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
7304 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7305 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7306 a protocol version number mismatch like a decryption error
7307 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7310 *) Turn on RSA blinding by default in the default implementation
7311 to avoid a timing attack. Applications that don't want it can call
7312 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7313 They would be ill-advised to do so in most cases.
7314 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7316 *) Change RSA blinding code so that it works when the PRNG is not
7317 seeded (in this case, the secret RSA exponent is abused as
7318 an unpredictable seed -- if it is not unpredictable, there
7319 is no point in blinding anyway). Make RSA blinding thread-safe
7320 by remembering the creator's thread ID in rsa->blinding and
7321 having all other threads use local one-time blinding factors
7322 (this requires more computation than sharing rsa->blinding, but
7323 avoids excessive locking; and if an RSA object is not shared
7324 between threads, blinding will still be very fast).
7327 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
7328 ENGINE as defaults for all supported algorithms irrespective of
7329 the 'flags' parameter. 'flags' is now honoured, so applications
7330 should make sure they are passing it correctly.
7333 *) Target "mingw" now allows native Windows code to be generated in
7334 the Cygwin environment as well as with the MinGW compiler.
7337 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
7339 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7340 via timing by performing a MAC computation even if incorrect
7341 block cipher padding has been found. This is a countermeasure
7342 against active attacks where the attacker has to distinguish
7343 between bad padding and a MAC verification error. (CVE-2003-0078)
7345 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7346 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7347 Martin Vuagnoux (EPFL, Ilion)]
7349 *) Make the no-err option work as intended. The intention with no-err
7350 is not to have the whole error stack handling routines removed from
7351 libcrypto, it's only intended to remove all the function name and
7352 reason texts, thereby removing some of the footprint that may not
7353 be interesting if those errors aren't displayed anyway.
7355 NOTE: it's still possible for any application or module to have its
7356 own set of error texts inserted. The routines are there, just not
7357 used by default when no-err is given.
7360 *) Add support for FreeBSD on IA64.
7361 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
7363 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
7364 Kerberos function mit_des_cbc_cksum(). Before this change,
7365 the value returned by DES_cbc_cksum() was like the one from
7366 mit_des_cbc_cksum(), except the bytes were swapped.
7367 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
7369 *) Allow an application to disable the automatic SSL chain building.
7370 Before this a rather primitive chain build was always performed in
7371 ssl3_output_cert_chain(): an application had no way to send the
7372 correct chain if the automatic operation produced an incorrect result.
7374 Now the chain builder is disabled if either:
7376 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
7378 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
7380 The reasoning behind this is that an application would not want the
7381 auto chain building to take place if extra chain certificates are
7382 present and it might also want a means of sending no additional
7383 certificates (for example the chain has two certificates and the
7387 *) Add the possibility to build without the ENGINE framework.
7388 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7390 *) Under Win32 gmtime() can return NULL: check return value in
7391 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
7394 *) DSA routines: under certain error conditions uninitialized BN objects
7395 could be freed. Solution: make sure initialization is performed early
7396 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
7397 Nils Larsch <nla@trustcenter.de> via PR#459)
7400 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
7401 checked on reconnect on the client side, therefore session resumption
7402 could still fail with a "ssl session id is different" error. This
7403 behaviour is masked when SSL_OP_ALL is used due to
7404 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
7405 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7406 followup to PR #377.
7409 *) IA-32 assembler support enhancements: unified ELF targets, support
7410 for SCO/Caldera platforms, fix for Cygwin shared build.
7413 *) Add support for FreeBSD on sparc64. As a consequence, support for
7414 FreeBSD on non-x86 processors is separate from x86 processors on
7415 the config script, much like the NetBSD support.
7416 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
7418 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
7420 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
7423 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
7424 code (06) was taken as the first octet of the session ID and the last
7425 octet was ignored consequently. As a result SSLv2 client side session
7426 caching could not have worked due to the session ID mismatch between
7428 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
7432 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
7433 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
7437 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
7438 seems that in spite of existing for more than a year, many application
7439 author have done nothing to provide the necessary callbacks, which
7440 means that this particular engine will not work properly anywhere.
7441 This is a very unfortunate situation which forces us, in the name
7442 of usability, to give the hw_ncipher.c a static lock, which is part
7444 NOTE: This is for the 0.9.7 series ONLY. This hack will never
7445 appear in 0.9.8 or later. We EXPECT application authors to have
7446 dealt properly with this when 0.9.8 is released (unless we actually
7447 make such changes in the libcrypto locking code that changes will
7448 have to be made anyway).
7451 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
7452 octets have been read, EOF or an error occurs. Without this change
7453 some truncated ASN1 structures will not produce an error.
7456 *) Disable Heimdal support, since it hasn't been fully implemented.
7457 Still give the possibility to force the use of Heimdal, but with
7458 warnings and a request that patches get sent to openssl-dev.
7461 *) Add the VC-CE target, introduce the WINCE sysname, and add
7462 INSTALL.WCE and appropriate conditionals to make it build.
7463 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
7465 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
7466 cygssl-x.y.z.dll, where x, y and z are the major, minor and
7467 edit numbers of the version.
7468 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7470 *) Introduce safe string copy and catenation functions
7471 (BUF_strlcpy() and BUF_strlcat()).
7472 [Ben Laurie (CHATS) and Richard Levitte]
7474 *) Avoid using fixed-size buffers for one-line DNs.
7475 [Ben Laurie (CHATS)]
7477 *) Add BUF_MEM_grow_clean() to avoid information leakage when
7478 resizing buffers containing secrets, and use where appropriate.
7479 [Ben Laurie (CHATS)]
7481 *) Avoid using fixed size buffers for configuration file location.
7482 [Ben Laurie (CHATS)]
7484 *) Avoid filename truncation for various CA files.
7485 [Ben Laurie (CHATS)]
7487 *) Use sizeof in preference to magic numbers.
7488 [Ben Laurie (CHATS)]
7490 *) Avoid filename truncation in cert requests.
7491 [Ben Laurie (CHATS)]
7493 *) Add assertions to check for (supposedly impossible) buffer
7495 [Ben Laurie (CHATS)]
7497 *) Don't cache truncated DNS entries in the local cache (this could
7498 potentially lead to a spoofing attack).
7499 [Ben Laurie (CHATS)]
7501 *) Fix various buffers to be large enough for hex/decimal
7502 representations in a platform independent manner.
7503 [Ben Laurie (CHATS)]
7505 *) Add CRYPTO_realloc_clean() to avoid information leakage when
7506 resizing buffers containing secrets, and use where appropriate.
7507 [Ben Laurie (CHATS)]
7509 *) Add BIO_indent() to avoid much slightly worrying code to do
7511 [Ben Laurie (CHATS)]
7513 *) Convert sprintf()/BIO_puts() to BIO_printf().
7514 [Ben Laurie (CHATS)]
7516 *) buffer_gets() could terminate with the buffer only half
7518 [Ben Laurie (CHATS)]
7520 *) Add assertions to prevent user-supplied crypto functions from
7521 overflowing internal buffers by having large block sizes, etc.
7522 [Ben Laurie (CHATS)]
7524 *) New OPENSSL_assert() macro (similar to assert(), but enabled
7526 [Ben Laurie (CHATS)]
7528 *) Eliminate unused copy of key in RC4.
7529 [Ben Laurie (CHATS)]
7531 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
7532 [Ben Laurie (CHATS)]
7534 *) Fix off-by-one error in EGD path.
7535 [Ben Laurie (CHATS)]
7537 *) If RANDFILE path is too long, ignore instead of truncating.
7538 [Ben Laurie (CHATS)]
7540 *) Eliminate unused and incorrectly sized X.509 structure
7542 [Ben Laurie (CHATS)]
7544 *) Eliminate unused and dangerous function knumber().
7545 [Ben Laurie (CHATS)]
7547 *) Eliminate unused and dangerous structure, KSSL_ERR.
7548 [Ben Laurie (CHATS)]
7550 *) Protect against overlong session ID context length in an encoded
7551 session object. Since these are local, this does not appear to be
7553 [Ben Laurie (CHATS)]
7555 *) Change from security patch (see 0.9.6e below) that did not affect
7556 the 0.9.6 release series:
7558 Remote buffer overflow in SSL3 protocol - an attacker could
7559 supply an oversized master key in Kerberos-enabled versions.
7561 [Ben Laurie (CHATS)]
7563 *) Change the SSL kerb5 codes to match RFC 2712.
7566 *) Make -nameopt work fully for req and add -reqopt switch.
7567 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
7569 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
7570 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
7572 *) Make sure tests can be performed even if the corresponding algorithms
7573 have been removed entirely. This was also the last step to make
7574 OpenSSL compilable with DJGPP under all reasonable conditions.
7575 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
7577 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
7578 to allow version independent disabling of normally unselected ciphers,
7579 which may be activated as a side-effect of selecting a single cipher.
7581 (E.g., cipher list string "RSA" enables ciphersuites that are left
7582 out of "ALL" because they do not provide symmetric encryption.
7583 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
7584 [Lutz Jaenicke, Bodo Moeller]
7586 *) Add appropriate support for separate platform-dependent build
7587 directories. The recommended way to make a platform-dependent
7588 build directory is the following (tested on Linux), maybe with
7591 # Place yourself outside of the OpenSSL source tree. In
7592 # this example, the environment variable OPENSSL_SOURCE
7593 # is assumed to contain the absolute OpenSSL source directory.
7594 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
7595 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
7596 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
7597 mkdir -p `dirname $F`
7598 ln -s $OPENSSL_SOURCE/$F $F
7601 To be absolutely sure not to disturb the source tree, a "make clean"
7602 is a good thing. If it isn't successful, don't worry about it,
7603 it probably means the source directory is very clean.
7606 *) Make sure any ENGINE control commands make local copies of string
7607 pointers passed to them whenever necessary. Otherwise it is possible
7608 the caller may have overwritten (or deallocated) the original string
7609 data when a later ENGINE operation tries to use the stored values.
7610 [Götz Babin-Ebell <babinebell@trustcenter.de>]
7612 *) Improve diagnostics in file reading and command-line digests.
7613 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
7615 *) Add AES modes CFB and OFB to the object database. Correct an
7616 error in AES-CFB decryption.
7619 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
7620 allows existing EVP_CIPHER_CTX structures to be reused after
7621 calling EVP_*Final(). This behaviour is used by encryption
7622 BIOs and some applications. This has the side effect that
7623 applications must explicitly clean up cipher contexts with
7624 EVP_CIPHER_CTX_cleanup() or they will leak memory.
7627 *) Check the values of dna and dnb in bn_mul_recursive before calling
7628 bn_mul_comba (a non zero value means the a or b arrays do not contain
7629 n2 elements) and fallback to bn_mul_normal if either is not zero.
7632 *) Fix escaping of non-ASCII characters when using the -subj option
7633 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
7636 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
7637 form for "surname", serialNumber has no short form.
7638 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
7639 therefore remove "mail" short name for "internet 7".
7640 The OID for unique identifiers in X509 certificates is
7641 x500UniqueIdentifier, not uniqueIdentifier.
7642 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
7645 *) Add an "init" command to the ENGINE config module and auto initialize
7646 ENGINEs. Without any "init" command the ENGINE will be initialized
7647 after all ctrl commands have been executed on it. If init=1 the
7648 ENGINE is initialized at that point (ctrls before that point are run
7649 on the uninitialized ENGINE and after on the initialized one). If
7650 init=0 then the ENGINE will not be initialized at all.
7653 *) Fix the 'app_verify_callback' interface so that the user-defined
7654 argument is actually passed to the callback: In the
7655 SSL_CTX_set_cert_verify_callback() prototype, the callback
7656 declaration has been changed from
7659 int (*cb)(X509_STORE_CTX *,void *);
7660 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
7661 i=s->ctx->app_verify_callback(&ctx)
7662 has been changed into
7663 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
7665 To update applications using SSL_CTX_set_cert_verify_callback(),
7666 a dummy argument can be added to their callback functions.
7667 [D. K. Smetters <smetters@parc.xerox.com>]
7669 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
7670 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
7672 *) Add and OPENSSL_LOAD_CONF define which will cause
7673 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
7674 This allows older applications to transparently support certain
7675 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
7676 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
7677 load the config file and OPENSSL_add_all_algorithms_conf() which will
7678 always load it have also been added.
7681 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
7682 Adjust NIDs and EVP layer.
7683 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7685 *) Config modules support in openssl utility.
7687 Most commands now load modules from the config file,
7688 though in a few (such as version) this isn't done
7689 because it couldn't be used for anything.
7691 In the case of ca and req the config file used is
7692 the same as the utility itself: that is the -config
7693 command line option can be used to specify an
7697 *) Move default behaviour from OPENSSL_config(). If appname is NULL
7698 use "openssl_conf" if filename is NULL use default openssl config file.
7701 *) Add an argument to OPENSSL_config() to allow the use of an alternative
7702 config section name. Add a new flag to tolerate a missing config file
7703 and move code to CONF_modules_load_file().
7706 *) Support for crypto accelerator cards from Accelerated Encryption
7707 Processing, www.aep.ie. (Use engine 'aep')
7708 The support was copied from 0.9.6c [engine] and adapted/corrected
7709 to work with the new engine framework.
7710 [AEP Inc. and Richard Levitte]
7712 *) Support for SureWare crypto accelerator cards from Baltimore
7713 Technologies. (Use engine 'sureware')
7714 The support was copied from 0.9.6c [engine] and adapted
7715 to work with the new engine framework.
7718 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
7719 make the newer ENGINE framework commands for the CHIL engine work.
7720 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
7722 *) Make it possible to produce shared libraries on ReliantUNIX.
7723 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
7725 *) Add the configuration target debug-linux-ppro.
7726 Make 'openssl rsa' use the general key loading routines
7727 implemented in apps.c, and make those routines able to
7728 handle the key format FORMAT_NETSCAPE and the variant
7730 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7732 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7733 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7735 *) Add -keyform to rsautl, and document -engine.
7736 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
7738 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
7739 BIO_R_NO_SUCH_FILE error code rather than the generic
7740 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
7743 *) Add new functions
7745 ERR_peek_last_error_line
7746 ERR_peek_last_error_line_data.
7747 These are similar to
7750 ERR_peek_error_line_data,
7751 but report on the latest error recorded rather than the first one
7752 still in the error queue.
7753 [Ben Laurie, Bodo Moeller]
7755 *) default_algorithms option in ENGINE config module. This allows things
7757 default_algorithms = ALL
7758 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
7761 *) Preliminary ENGINE config module.
7764 *) New experimental application configuration code.
7767 *) Change the AES code to follow the same name structure as all other
7768 symmetric ciphers, and behave the same way. Move everything to
7769 the directory crypto/aes, thereby obsoleting crypto/rijndael.
7770 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7772 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
7773 [Ben Laurie and Theo de Raadt]
7775 *) Add option to output public keys in req command.
7776 [Massimiliano Pala madwolf@openca.org]
7778 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
7779 (up to about 10% better than before for P-192 and P-224).
7782 *) New functions/macros
7784 SSL_CTX_set_msg_callback(ctx, cb)
7785 SSL_CTX_set_msg_callback_arg(ctx, arg)
7786 SSL_set_msg_callback(ssl, cb)
7787 SSL_set_msg_callback_arg(ssl, arg)
7789 to request calling a callback function
7791 void cb(int write_p, int version, int content_type,
7792 const void *buf, size_t len, SSL *ssl, void *arg)
7794 whenever a protocol message has been completely received
7795 (write_p == 0) or sent (write_p == 1). Here 'version' is the
7796 protocol version according to which the SSL library interprets
7797 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
7798 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
7799 the content type as defined in the SSL 3.0/TLS 1.0 protocol
7800 specification (change_cipher_spec(20), alert(21), handshake(22)).
7801 'buf' and 'len' point to the actual message, 'ssl' to the
7802 SSL object, and 'arg' is the application-defined value set by
7803 SSL[_CTX]_set_msg_callback_arg().
7805 'openssl s_client' and 'openssl s_server' have new '-msg' options
7806 to enable a callback that displays all protocol messages.
7809 *) Change the shared library support so shared libraries are built as
7810 soon as the corresponding static library is finished, and thereby get
7811 openssl and the test programs linked against the shared library.
7812 This still only happens when the keyword "shard" has been given to
7813 the configuration scripts.
7815 NOTE: shared library support is still an experimental thing, and
7816 backward binary compatibility is still not guaranteed.
7817 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
7819 *) Add support for Subject Information Access extension.
7820 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7822 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
7823 additional bytes when new memory had to be allocated, not just
7824 when reusing an existing buffer.
7827 *) New command line and configuration option 'utf8' for the req command.
7828 This allows field values to be specified as UTF8 strings.
7831 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
7832 runs for the former and machine-readable output for the latter.
7835 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
7836 of the e-mail address in the DN (i.e., it will go into a certificate
7837 extension only). The new configuration file option 'email_in_dn = no'
7838 has the same effect.
7839 [Massimiliano Pala madwolf@openca.org]
7841 *) Change all functions with names starting with des_ to be starting
7842 with DES_ instead. Add wrappers that are compatible with libdes,
7843 but are named _ossl_old_des_*. Finally, add macros that map the
7844 des_* symbols to the corresponding _ossl_old_des_* if libdes
7845 compatibility is desired. If OpenSSL 0.9.6c compatibility is
7846 desired, the des_* symbols will be mapped to DES_*, with one
7849 Since we provide two compatibility mappings, the user needs to
7850 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
7851 compatibility is desired. The default (i.e., when that macro
7852 isn't defined) is OpenSSL 0.9.6c compatibility.
7854 There are also macros that enable and disable the support of old
7855 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
7856 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
7857 are defined, the default will apply: to support the old des routines.
7859 In either case, one must include openssl/des.h to get the correct
7860 definitions. Do not try to just include openssl/des_old.h, that
7863 NOTE: This is a major break of an old API into a new one. Software
7864 authors are encouraged to switch to the DES_ style functions. Some
7865 time in the future, des_old.h and the libdes compatibility functions
7866 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
7867 default), and then completely removed.
7870 *) Test for certificates which contain unsupported critical extensions.
7871 If such a certificate is found during a verify operation it is
7872 rejected by default: this behaviour can be overridden by either
7873 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
7874 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
7875 X509_supported_extension() has also been added which returns 1 if a
7876 particular extension is supported.
7879 *) Modify the behaviour of EVP cipher functions in similar way to digests
7880 to retain compatibility with existing code.
7883 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
7884 compatibility with existing code. In particular the 'ctx' parameter does
7885 not have to be to be initialized before the call to EVP_DigestInit() and
7886 it is tidied up after a call to EVP_DigestFinal(). New function
7887 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
7888 EVP_MD_CTX_copy() changed to not require the destination to be
7889 initialized valid and new function EVP_MD_CTX_copy_ex() added which
7890 requires the destination to be valid.
7892 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
7893 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
7896 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
7897 so that complete 'Handshake' protocol structures are kept in memory
7898 instead of overwriting 'msg_type' and 'length' with 'body' data.
7901 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
7902 [Massimo Santin via Richard Levitte]
7904 *) Major restructuring to the underlying ENGINE code. This includes
7905 reduction of linker bloat, separation of pure "ENGINE" manipulation
7906 (initialisation, etc) from functionality dealing with implementations
7907 of specific crypto interfaces. This change also introduces integrated
7908 support for symmetric ciphers and digest implementations - so ENGINEs
7909 can now accelerate these by providing EVP_CIPHER and EVP_MD
7910 implementations of their own. This is detailed in crypto/engine/README
7911 as it couldn't be adequately described here. However, there are a few
7912 API changes worth noting - some RSA, DSA, DH, and RAND functions that
7913 were changed in the original introduction of ENGINE code have now
7914 reverted back - the hooking from this code to ENGINE is now a good
7915 deal more passive and at run-time, operations deal directly with
7916 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
7917 dereferencing through an ENGINE pointer any more. Also, the ENGINE
7918 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
7919 they were not being used by the framework as there is no concept of a
7920 BIGNUM_METHOD and they could not be generalised to the new
7921 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
7922 ENGINE_cpy() has been removed as it cannot be consistently defined in
7926 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
7929 *) Change mkdef.pl to sort symbols that get the same entry number,
7930 and make sure the automatically generated functions ERR_load_*
7931 become part of libeay.num as well.
7934 *) New function SSL_renegotiate_pending(). This returns true once
7935 renegotiation has been requested (either SSL_renegotiate() call
7936 or HelloRequest/ClientHello received from the peer) and becomes
7937 false once a handshake has been completed.
7938 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
7939 sends a HelloRequest, but does not ensure that a handshake takes
7940 place. SSL_renegotiate_pending() is useful for checking if the
7941 client has followed the request.)
7944 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
7945 By default, clients may request session resumption even during
7946 renegotiation (if session ID contexts permit); with this option,
7947 session resumption is possible only in the first handshake.
7949 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
7950 more bits available for options that should not be part of
7951 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
7954 *) Add some demos for certificate and certificate request creation.
7957 *) Make maximum certificate chain size accepted from the peer application
7958 settable (SSL*_get/set_max_cert_list()), as proposed by
7959 "Douglas E. Engert" <deengert@anl.gov>.
7962 *) Add support for shared libraries for Unixware-7
7963 (Boyd Lynn Gerber <gerberb@zenez.com>).
7966 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
7967 be done prior to destruction. Use this to unload error strings from
7968 ENGINEs that load their own error strings. NB: This adds two new API
7969 functions to "get" and "set" this destroy handler in an ENGINE.
7972 *) Alter all existing ENGINE implementations (except "openssl" and
7973 "openbsd") to dynamically instantiate their own error strings. This
7974 makes them more flexible to be built both as statically-linked ENGINEs
7975 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
7976 Also, add stub code to each that makes building them as self-contained
7977 shared-libraries easier (see README.ENGINE).
7980 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
7981 implementations into applications that are completely implemented in
7982 self-contained shared-libraries. The "dynamic" ENGINE exposes control
7983 commands that can be used to configure what shared-library to load and
7984 to control aspects of the way it is handled. Also, made an update to
7985 the README.ENGINE file that brings its information up-to-date and
7986 provides some information and instructions on the "dynamic" ENGINE
7987 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
7990 *) Make it possible to unload ranges of ERR strings with a new
7991 "ERR_unload_strings" function.
7994 *) Add a copy() function to EVP_MD.
7997 *) Make EVP_MD routines take a context pointer instead of just the
7998 md_data void pointer.
8001 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
8002 that the digest can only process a single chunk of data
8003 (typically because it is provided by a piece of
8004 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
8005 is only going to provide a single chunk of data, and hence the
8006 framework needn't accumulate the data for oneshot drivers.
8009 *) As with "ERR", make it possible to replace the underlying "ex_data"
8010 functions. This change also alters the storage and management of global
8011 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
8012 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
8013 index counters. The API functions that use this state have been changed
8014 to take a "class_index" rather than pointers to the class's local STACK
8015 and counter, and there is now an API function to dynamically create new
8016 classes. This centralisation allows us to (a) plug a lot of the
8017 thread-safety problems that existed, and (b) makes it possible to clean
8018 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
8019 such data would previously have always leaked in application code and
8020 workarounds were in place to make the memory debugging turn a blind eye
8021 to it. Application code that doesn't use this new function will still
8022 leak as before, but their memory debugging output will announce it now
8023 rather than letting it slide.
8025 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
8026 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
8027 has a return value to indicate success or failure.
8030 *) Make it possible to replace the underlying "ERR" functions such that the
8031 global state (2 LHASH tables and 2 locks) is only used by the "default"
8032 implementation. This change also adds two functions to "get" and "set"
8033 the implementation prior to it being automatically set the first time
8034 any other ERR function takes place. Ie. an application can call "get",
8035 pass the return value to a module it has just loaded, and that module
8036 can call its own "set" function using that value. This means the
8037 module's "ERR" operations will use (and modify) the error state in the
8038 application and not in its own statically linked copy of OpenSSL code.
8041 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
8042 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
8043 the operation, and provides a more encapsulated way for external code
8044 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
8045 to use these functions rather than manually incrementing the counts.
8047 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
8050 *) Add EVP test program.
8053 *) Add symmetric cipher support to ENGINE. Expect the API to change!
8056 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
8057 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
8058 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
8059 These allow a CRL to be built without having to access X509_CRL fields
8060 directly. Modify 'ca' application to use new functions.
8063 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
8064 bug workarounds. Rollback attack detection is a security feature.
8065 The problem will only arise on OpenSSL servers when TLSv1 is not
8066 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
8067 Software authors not wanting to support TLSv1 will have special reasons
8068 for their choice and can explicitly enable this option.
8069 [Bodo Moeller, Lutz Jaenicke]
8071 *) Rationalise EVP so it can be extended: don't include a union of
8072 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
8073 (similar to those existing for EVP_CIPHER_CTX).
8078 EVP_MD_CTX_init(&md); /* new function call */
8079 EVP_DigestInit(&md, EVP_sha1());
8080 EVP_DigestUpdate(&md, in, len);
8081 EVP_DigestFinal(&md, out, NULL);
8082 EVP_MD_CTX_cleanup(&md); /* new function call */
8086 *) Make DES key schedule conform to the usual scheme, as well as
8087 correcting its structure. This means that calls to DES functions
8088 now have to pass a pointer to a des_key_schedule instead of a
8089 plain des_key_schedule (which was actually always a pointer
8092 des_key_schedule ks;
8094 des_set_key_checked(..., &ks);
8095 des_ncbc_encrypt(..., &ks, ...);
8097 (Note that a later change renames 'des_...' into 'DES_...'.)
8100 *) Initial reduction of linker bloat: the use of some functions, such as
8101 PEM causes large amounts of unused functions to be linked in due to
8102 poor organisation. For example pem_all.c contains every PEM function
8103 which has a knock on effect of linking in large amounts of (unused)
8104 ASN1 code. Grouping together similar functions and splitting unrelated
8105 functions prevents this.
8108 *) Cleanup of EVP macros.
8111 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
8112 correct _ecb suffix.
8115 *) Add initial OCSP responder support to ocsp application. The
8116 revocation information is handled using the text based index
8117 use by the ca application. The responder can either handle
8118 requests generated internally, supplied in files (for example
8119 via a CGI script) or using an internal minimal server.
8122 *) Add configuration choices to get zlib compression for TLS.
8125 *) Changes to Kerberos SSL for RFC 2712 compliance:
8126 1. Implemented real KerberosWrapper, instead of just using
8127 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
8128 2. Implemented optional authenticator field of KerberosWrapper.
8130 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
8131 and authenticator structs; see crypto/krb5/.
8133 Generalized Kerberos calls to support multiple Kerberos libraries.
8134 [Vern Staats <staatsvr@asc.hpc.mil>,
8135 Jeffrey Altman <jaltman@columbia.edu>
8136 via Richard Levitte]
8138 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
8139 already does with RSA. testdsa.h now has 'priv_key/pub_key'
8140 values for each of the key sizes rather than having just
8141 parameters (and 'speed' generating keys each time).
8144 *) Speed up EVP routines.
8147 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
8148 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
8149 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
8150 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
8152 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
8153 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
8154 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
8157 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
8159 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
8162 *) Added the OS2-EMX target.
8163 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
8165 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
8166 to support NCONF routines in extension code. New function CONF_set_nconf()
8167 to allow functions which take an NCONF to also handle the old LHASH
8168 structure: this means that the old CONF compatible routines can be
8169 retained (in particular wrt extensions) without having to duplicate the
8170 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
8173 *) Enhance the general user interface with mechanisms for inner control
8174 and with possibilities to have yes/no kind of prompts.
8177 *) Change all calls to low level digest routines in the library and
8178 applications to use EVP. Add missing calls to HMAC_cleanup() and
8179 don't assume HMAC_CTX can be copied using memcpy().
8180 [Verdon Walker <VWalker@novell.com>, Steve Henson]
8182 *) Add the possibility to control engines through control names but with
8183 arbitrary arguments instead of just a string.
8184 Change the key loaders to take a UI_METHOD instead of a callback
8185 function pointer. NOTE: this breaks binary compatibility with earlier
8186 versions of OpenSSL [engine].
8187 Adapt the nCipher code for these new conditions and add a card insertion
8191 *) Enhance the general user interface with mechanisms to better support
8192 dialog box interfaces, application-defined prompts, the possibility
8193 to use defaults (for example default passwords from somewhere else)
8194 and interrupts/cancellations.
8197 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
8198 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
8201 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
8202 tidy up some unnecessarily weird code in 'sk_new()').
8203 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
8205 *) Change the key loading routines for ENGINEs to use the same kind
8206 callback (pem_password_cb) as all other routines that need this
8210 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
8211 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
8212 than this minimum value is recommended.
8215 *) New random seeder for OpenVMS, using the system process statistics
8216 that are easily reachable.
8219 *) Windows apparently can't transparently handle global
8220 variables defined in DLLs. Initialisations such as:
8222 const ASN1_ITEM *it = &ASN1_INTEGER_it;
8224 won't compile. This is used by the any applications that need to
8225 declare their own ASN1 modules. This was fixed by adding the option
8226 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
8227 needed for static libraries under Win32.
8230 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
8231 setting of purpose and trust fields. New X509_STORE trust and
8232 purpose functions and tidy up setting in other SSL functions.
8235 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
8236 structure. These are inherited by X509_STORE_CTX when it is
8237 initialised. This allows various defaults to be set in the
8238 X509_STORE structure (such as flags for CRL checking and custom
8239 purpose or trust settings) for functions which only use X509_STORE_CTX
8240 internally such as S/MIME.
8242 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
8243 trust settings if they are not set in X509_STORE. This allows X509_STORE
8244 purposes and trust (in S/MIME for example) to override any set by default.
8246 Add command line options for CRL checking to smime, s_client and s_server
8250 *) Initial CRL based revocation checking. If the CRL checking flag(s)
8251 are set then the CRL is looked up in the X509_STORE structure and
8252 its validity and signature checked, then if the certificate is found
8253 in the CRL the verify fails with a revoked error.
8255 Various new CRL related callbacks added to X509_STORE_CTX structure.
8257 Command line options added to 'verify' application to support this.
8259 This needs some additional work, such as being able to handle multiple
8260 CRLs with different times, extension based lookup (rather than just
8261 by subject name) and ultimately more complete V2 CRL extension
8265 *) Add a general user interface API (crypto/ui/). This is designed
8266 to replace things like des_read_password and friends (backward
8267 compatibility functions using this new API are provided).
8268 The purpose is to remove prompting functions from the DES code
8269 section as well as provide for prompting through dialog boxes in
8270 a window system and the like.
8273 *) Add "ex_data" support to ENGINE so implementations can add state at a
8274 per-structure level rather than having to store it globally.
8277 *) Make it possible for ENGINE structures to be copied when retrieved by
8278 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
8279 This causes the "original" ENGINE structure to act like a template,
8280 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
8281 operational state can be localised to each ENGINE structure, despite the
8282 fact they all share the same "methods". New ENGINE structures returned in
8283 this case have no functional references and the return value is the single
8284 structural reference. This matches the single structural reference returned
8285 by ENGINE_by_id() normally, when it is incremented on the pre-existing
8289 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
8290 needs to match any other type at all we need to manually clear the
8294 *) Changes to the "openssl engine" utility to include;
8295 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
8296 about an ENGINE's available control commands.
8297 - executing control commands from command line arguments using the
8298 '-pre' and '-post' switches. '-post' is only used if '-t' is
8299 specified and the ENGINE is successfully initialised. The syntax for
8300 the individual commands are colon-separated, for example;
8301 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
8304 *) New dynamic control command support for ENGINEs. ENGINEs can now
8305 declare their own commands (numbers), names (strings), descriptions,
8306 and input types for run-time discovery by calling applications. A
8307 subset of these commands are implicitly classed as "executable"
8308 depending on their input type, and only these can be invoked through
8309 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
8310 can be based on user input, config files, etc). The distinction is
8311 that "executable" commands cannot return anything other than a boolean
8312 result and can only support numeric or string input, whereas some
8313 discoverable commands may only be for direct use through
8314 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
8315 pointers, or other custom uses. The "executable" commands are to
8316 support parameterisations of ENGINE behaviour that can be
8317 unambiguously defined by ENGINEs and used consistently across any
8318 OpenSSL-based application. Commands have been added to all the
8319 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
8320 control over shared-library paths without source code alterations.
8323 *) Changed all ENGINE implementations to dynamically allocate their
8324 ENGINEs rather than declaring them statically. Apart from this being
8325 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
8326 this also allows the implementations to compile without using the
8327 internal engine_int.h header.
8330 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
8331 'const' value. Any code that should be able to modify a RAND_METHOD
8332 should already have non-const pointers to it (ie. they should only
8333 modify their own ones).
8336 *) Made a variety of little tweaks to the ENGINE code.
8337 - "atalla" and "ubsec" string definitions were moved from header files
8338 to C code. "nuron" string definitions were placed in variables
8339 rather than hard-coded - allowing parameterisation of these values
8340 later on via ctrl() commands.
8341 - Removed unused "#if 0"'d code.
8342 - Fixed engine list iteration code so it uses ENGINE_free() to release
8343 structural references.
8344 - Constified the RAND_METHOD element of ENGINE structures.
8345 - Constified various get/set functions as appropriate and added
8346 missing functions (including a catch-all ENGINE_cpy that duplicates
8347 all ENGINE values onto a new ENGINE except reference counts/state).
8348 - Removed NULL parameter checks in get/set functions. Setting a method
8349 or function to NULL is a way of cancelling out a previously set
8350 value. Passing a NULL ENGINE parameter is just plain stupid anyway
8351 and doesn't justify the extra error symbols and code.
8352 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
8353 flags from engine_int.h to engine.h.
8354 - Changed prototypes for ENGINE handler functions (init(), finish(),
8355 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
8358 *) Implement binary inversion algorithm for BN_mod_inverse in addition
8359 to the algorithm using long division. The binary algorithm can be
8360 used only if the modulus is odd. On 32-bit systems, it is faster
8361 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
8362 roughly 5-15% for 256-bit moduli), so we use it only for moduli
8363 up to 450 bits. In 64-bit environments, the binary algorithm
8364 appears to be advantageous for much longer moduli; here we use it
8365 for moduli up to 2048 bits.
8368 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
8369 could not support the combine flag in choice fields.
8372 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
8373 extensions from a certificate request to the certificate.
8376 *) Allow multiple 'certopt' and 'nameopt' options to be separated
8377 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
8378 file: this allows the display of the certificate about to be
8379 signed to be customised, to allow certain fields to be included
8380 or excluded and extension details. The old system didn't display
8381 multicharacter strings properly, omitted fields not in the policy
8382 and couldn't display additional details such as extensions.
8385 *) Function EC_POINTs_mul for multiple scalar multiplication
8386 of an arbitrary number of elliptic curve points
8387 \sum scalars[i]*points[i],
8388 optionally including the generator defined for the EC_GROUP:
8389 scalar*generator + \sum scalars[i]*points[i].
8391 EC_POINT_mul is a simple wrapper function for the typical case
8392 that the point list has just one item (besides the optional
8396 *) First EC_METHODs for curves over GF(p):
8398 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
8399 operations and provides various method functions that can also
8400 operate with faster implementations of modular arithmetic.
8402 EC_GFp_mont_method() reuses most functions that are part of
8403 EC_GFp_simple_method, but uses Montgomery arithmetic.
8405 [Bodo Moeller; point addition and point doubling
8406 implementation directly derived from source code provided by
8407 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
8409 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
8410 crypto/ec/ec_lib.c):
8412 Curves are EC_GROUP objects (with an optional group generator)
8413 based on EC_METHODs that are built into the library.
8415 Points are EC_POINT objects based on EC_GROUP objects.
8417 Most of the framework would be able to handle curves over arbitrary
8418 finite fields, but as there are no obvious types for fields other
8419 than GF(p), some functions are limited to that for now.
8422 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
8423 that the file contains a complete HTTP response.
8426 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
8427 change the def and num file printf format specifier from "%-40sXXX"
8428 to "%-39s XXX". The latter will always guarantee a space after the
8429 field while the former will cause them to run together if the field
8430 is 40 of more characters long.
8433 *) Constify the cipher and digest 'method' functions and structures
8434 and modify related functions to take constant EVP_MD and EVP_CIPHER
8438 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
8439 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
8442 *) Modify EVP_Digest*() routines so they now return values. Although the
8443 internal software routines can never fail additional hardware versions
8447 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
8449 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
8450 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
8453 ERR_R_NESTED_ASN1_ERROR
8455 ERR_R_MISSING_ASN1_EOS
8456 were 4 .. 9, conflicting with
8457 ERR_LIB_RSA (= ERR_R_RSA_LIB)
8459 ERR_LIB_PEM (= ERR_R_PEM_LIB).
8460 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
8462 Add new error code 'ERR_R_INTERNAL_ERROR'.
8465 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
8469 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
8470 sets the subject name for a new request or supersedes the
8471 subject name in a given request. Formats that can be parsed are
8472 'CN=Some Name, OU=myOU, C=IT'
8474 'CN=Some Name/OU=myOU/C=IT'.
8476 Add options '-batch' and '-verbose' to 'openssl req'.
8477 [Massimiliano Pala <madwolf@hackmasters.net>]
8479 *) Introduce the possibility to access global variables through
8480 functions on platform were that's the best way to handle exporting
8481 global variables in shared libraries. To enable this functionality,
8482 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
8483 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
8484 is normally done by Configure or something similar).
8486 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
8487 in the source file (foo.c) like this:
8489 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
8490 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
8492 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
8493 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
8495 OPENSSL_DECLARE_GLOBAL(int,foo);
8496 #define foo OPENSSL_GLOBAL_REF(foo)
8497 OPENSSL_DECLARE_GLOBAL(double,bar);
8498 #define bar OPENSSL_GLOBAL_REF(bar)
8500 The #defines are very important, and therefore so is including the
8501 header file everywhere where the defined globals are used.
8503 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
8504 of ASN.1 items, but that structure is a bit different.
8506 The largest change is in util/mkdef.pl which has been enhanced with
8507 better and easier to understand logic to choose which symbols should
8508 go into the Windows .def files as well as a number of fixes and code
8509 cleanup (among others, algorithm keywords are now sorted
8510 lexicographically to avoid constant rewrites).
8513 *) In BN_div() keep a copy of the sign of 'num' before writing the
8514 result to 'rm' because if rm==num the value will be overwritten
8515 and produce the wrong result if 'num' is negative: this caused
8516 problems with BN_mod() and BN_nnmod().
8519 *) Function OCSP_request_verify(). This checks the signature on an
8520 OCSP request and verifies the signer certificate. The signer
8521 certificate is just checked for a generic purpose and OCSP request
8525 *) Add OCSP_check_validity() function to check the validity of OCSP
8526 responses. OCSP responses are prepared in real time and may only
8527 be a few seconds old. Simply checking that the current time lies
8528 between thisUpdate and nextUpdate max reject otherwise valid responses
8529 caused by either OCSP responder or client clock inaccuracy. Instead
8530 we allow thisUpdate and nextUpdate to fall within a certain period of
8531 the current time. The age of the response can also optionally be
8532 checked. Two new options -validity_period and -status_age added to
8536 *) If signature or public key algorithm is unrecognized print out its
8537 OID rather that just UNKNOWN.
8540 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
8541 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
8542 ID to be generated from the issuer certificate alone which can then be
8543 passed to OCSP_id_issuer_cmp().
8546 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
8547 ASN1 modules to export functions returning ASN1_ITEM pointers
8548 instead of the ASN1_ITEM structures themselves. This adds several
8549 new macros which allow the underlying ASN1 function/structure to
8550 be accessed transparently. As a result code should not use ASN1_ITEM
8551 references directly (such as &X509_it) but instead use the relevant
8552 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
8553 use of the new ASN1 code on platforms where exporting structures
8554 is problematical (for example in shared libraries) but exporting
8555 functions returning pointers to structures is not.
8558 *) Add support for overriding the generation of SSL/TLS session IDs.
8559 These callbacks can be registered either in an SSL_CTX or per SSL.
8560 The purpose of this is to allow applications to control, if they wish,
8561 the arbitrary values chosen for use as session IDs, particularly as it
8562 can be useful for session caching in multiple-server environments. A
8563 command-line switch for testing this (and any client code that wishes
8564 to use such a feature) has been added to "s_server".
8565 [Geoff Thorpe, Lutz Jaenicke]
8567 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
8568 of the form '#if defined(...) || defined(...) || ...' and
8569 '#if !defined(...) && !defined(...) && ...'. This also avoids
8570 the growing number of special cases it was previously handling.
8573 *) Make all configuration macros available for application by making
8574 sure they are available in opensslconf.h, by giving them names starting
8575 with "OPENSSL_" to avoid conflicts with other packages and by making
8576 sure e_os2.h will cover all platform-specific cases together with
8578 Additionally, it is now possible to define configuration/platform-
8579 specific names (called "system identities"). In the C code, these
8580 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
8581 macro with the name beginning with "OPENSSL_SYS_", which is determined
8582 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
8586 *) New option -set_serial to 'req' and 'x509' this allows the serial
8587 number to use to be specified on the command line. Previously self
8588 signed certificates were hard coded with serial number 0 and the
8589 CA options of 'x509' had to use a serial number in a file which was
8593 *) New options to 'ca' utility to support V2 CRL entry extensions.
8594 Currently CRL reason, invalidity date and hold instruction are
8595 supported. Add new CRL extensions to V3 code and some new objects.
8598 *) New function EVP_CIPHER_CTX_set_padding() this is used to
8599 disable standard block padding (aka PKCS#5 padding) in the EVP
8600 API, which was previously mandatory. This means that the data is
8601 not padded in any way and so the total length much be a multiple
8602 of the block size, otherwise an error occurs.
8605 *) Initial (incomplete) OCSP SSL support.
8608 *) New function OCSP_parse_url(). This splits up a URL into its host,
8609 port and path components: primarily to parse OCSP URLs. New -url
8610 option to ocsp utility.
8613 *) New nonce behavior. The return value of OCSP_check_nonce() now
8614 reflects the various checks performed. Applications can decide
8615 whether to tolerate certain situations such as an absent nonce
8616 in a response when one was present in a request: the ocsp application
8617 just prints out a warning. New function OCSP_add1_basic_nonce()
8618 this is to allow responders to include a nonce in a response even if
8619 the request is nonce-less.
8622 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
8623 skipped when using openssl x509 multiple times on a single input file,
8624 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
8627 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
8628 set string type: to handle setting ASN1_TIME structures. Fix ca
8629 utility to correctly initialize revocation date of CRLs.
8632 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
8633 the clients preferred ciphersuites and rather use its own preferences.
8634 Should help to work around M$ SGC (Server Gated Cryptography) bug in
8635 Internet Explorer by ensuring unchanged hash method during stepup.
8636 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
8639 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
8640 to aes and add a new 'exist' option to print out symbols that don't
8644 *) Additional options to ocsp utility to allow flags to be set and
8645 additional certificates supplied.
8648 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
8649 OCSP client a number of certificate to only verify the response
8653 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
8654 handle the new API. Currently only ECB, CBC modes supported. Add new
8657 Add TLS AES ciphersuites as described in RFC3268, "Advanced
8658 Encryption Standard (AES) Ciphersuites for Transport Layer
8659 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
8660 not enabled by default and were not part of the "ALL" ciphersuite
8661 alias because they were not yet official; they could be
8662 explicitly requested by specifying the "AESdraft" ciphersuite
8663 group alias. In the final release of OpenSSL 0.9.7, the group
8664 alias is called "AES" and is part of "ALL".)
8665 [Ben Laurie, Steve Henson, Bodo Moeller]
8667 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
8668 request to response.
8671 *) Functions for OCSP responders. OCSP_request_onereq_count(),
8672 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
8673 extract information from a certificate request. OCSP_response_create()
8674 creates a response and optionally adds a basic response structure.
8675 OCSP_basic_add1_status() adds a complete single response to a basic
8676 response and returns the OCSP_SINGLERESP structure just added (to allow
8677 extensions to be included for example). OCSP_basic_add1_cert() adds a
8678 certificate to a basic response and OCSP_basic_sign() signs a basic
8679 response with various flags. New helper functions ASN1_TIME_check()
8680 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
8681 (converts ASN1_TIME to GeneralizedTime).
8684 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
8685 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
8686 structure from a certificate. X509_pubkey_digest() digests the public_key
8687 contents: this is used in various key identifiers.
8690 *) Make sk_sort() tolerate a NULL argument.
8691 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
8693 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
8694 passed by the function are trusted implicitly. If any of them signed the
8695 response then it is assumed to be valid and is not verified.
8698 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
8699 to data. This was previously part of the PKCS7 ASN1 code. This
8700 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
8701 [Steve Henson, reported by Kenneth R. Robinette
8702 <support@securenetterm.com>]
8704 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
8705 routines: without these tracing memory leaks is very painful.
8706 Fix leaks in PKCS12 and PKCS7 routines.
8709 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
8710 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
8711 effectively meant GeneralizedTime would never be used. Now it
8712 is initialised to -1 but X509_time_adj() now has to check the value
8713 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
8714 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
8715 [Steve Henson, reported by Kenneth R. Robinette
8716 <support@securenetterm.com>]
8718 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
8719 result in a zero length in the ASN1_INTEGER structure which was
8720 not consistent with the structure when d2i_ASN1_INTEGER() was used
8721 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
8722 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
8723 where it did not print out a minus for negative ASN1_INTEGER.
8726 *) Add summary printout to ocsp utility. The various functions which
8727 convert status values to strings have been renamed to:
8728 OCSP_response_status_str(), OCSP_cert_status_str() and
8729 OCSP_crl_reason_str() and are no longer static. New options
8730 to verify nonce values and to disable verification. OCSP response
8731 printout format cleaned up.
8734 *) Add additional OCSP certificate checks. These are those specified
8735 in RFC2560. This consists of two separate checks: the CA of the
8736 certificate being checked must either be the OCSP signer certificate
8737 or the issuer of the OCSP signer certificate. In the latter case the
8738 OCSP signer certificate must contain the OCSP signing extended key
8739 usage. This check is performed by attempting to match the OCSP
8740 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
8741 in the OCSP_CERTID structures of the response.
8744 *) Initial OCSP certificate verification added to OCSP_basic_verify()
8745 and related routines. This uses the standard OpenSSL certificate
8746 verify routines to perform initial checks (just CA validity) and
8747 to obtain the certificate chain. Then additional checks will be
8748 performed on the chain. Currently the root CA is checked to see
8749 if it is explicitly trusted for OCSP signing. This is used to set
8750 a root CA as a global signing root: that is any certificate that
8751 chains to that CA is an acceptable OCSP signing certificate.
8754 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
8755 extensions from a separate configuration file.
8756 As when reading extensions from the main configuration file,
8757 the '-extensions ...' option may be used for specifying the
8759 [Massimiliano Pala <madwolf@comune.modena.it>]
8761 *) New OCSP utility. Allows OCSP requests to be generated or
8762 read. The request can be sent to a responder and the output
8763 parsed, outputed or printed in text form. Not complete yet:
8764 still needs to check the OCSP response validity.
8767 *) New subcommands for 'openssl ca':
8768 'openssl ca -status <serial>' prints the status of the cert with
8769 the given serial number (according to the index file).
8770 'openssl ca -updatedb' updates the expiry status of certificates
8772 [Massimiliano Pala <madwolf@comune.modena.it>]
8774 *) New '-newreq-nodes' command option to CA.pl. This is like
8775 '-newreq', but calls 'openssl req' with the '-nodes' option
8776 so that the resulting key is not encrypted.
8777 [Damien Miller <djm@mindrot.org>]
8779 *) New configuration for the GNU Hurd.
8780 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
8782 *) Initial code to implement OCSP basic response verify. This
8783 is currently incomplete. Currently just finds the signer's
8784 certificate and verifies the signature on the response.
8787 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
8788 value of OPENSSLDIR. This is available via the new '-d' option
8789 to 'openssl version', and is also included in 'openssl version -a'.
8792 *) Allowing defining memory allocation callbacks that will be given
8793 file name and line number information in additional arguments
8794 (a const char* and an int). The basic functionality remains, as
8795 well as the original possibility to just replace malloc(),
8796 realloc() and free() by functions that do not know about these
8797 additional arguments. To register and find out the current
8798 settings for extended allocation functions, the following
8799 functions are provided:
8801 CRYPTO_set_mem_ex_functions
8802 CRYPTO_set_locked_mem_ex_functions
8803 CRYPTO_get_mem_ex_functions
8804 CRYPTO_get_locked_mem_ex_functions
8806 These work the same way as CRYPTO_set_mem_functions and friends.
8807 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
8808 extended allocation function is enabled.
8809 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
8810 a conventional allocation function is enabled.
8811 [Richard Levitte, Bodo Moeller]
8813 *) Finish off removing the remaining LHASH function pointer casts.
8814 There should no longer be any prototype-casting required when using
8815 the LHASH abstraction, and any casts that remain are "bugs". See
8816 the callback types and macros at the head of lhash.h for details
8817 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
8820 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
8821 If /dev/[u]random devices are not available or do not return enough
8822 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
8824 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
8825 /etc/entropy will be queried once each in this sequence, querying stops
8826 when enough entropy was collected without querying more sockets.
8829 *) Change the Unix RAND_poll() variant to be able to poll several
8830 random devices, as specified by DEVRANDOM, until a sufficient amount
8831 of data has been collected. We spend at most 10 ms on each file
8832 (select timeout) and read in non-blocking mode. DEVRANDOM now
8833 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
8834 (previously it was just the string "/dev/urandom"), so on typical
8835 platforms the 10 ms delay will never occur.
8836 Also separate out the Unix variant to its own file, rand_unix.c.
8837 For VMS, there's a currently-empty rand_vms.c.
8840 *) Move OCSP client related routines to ocsp_cl.c. These
8841 provide utility functions which an application needing
8842 to issue a request to an OCSP responder and analyse the
8843 response will typically need: as opposed to those which an
8844 OCSP responder itself would need which will be added later.
8846 OCSP_request_sign() signs an OCSP request with an API similar
8847 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
8848 response. OCSP_response_get1_basic() extracts basic response
8849 from response. OCSP_resp_find_status(): finds and extracts status
8850 information from an OCSP_CERTID structure (which will be created
8851 when the request structure is built). These are built from lower
8852 level functions which work on OCSP_SINGLERESP structures but
8853 won't normally be used unless the application wishes to examine
8854 extensions in the OCSP response for example.
8856 Replace nonce routines with a pair of functions.
8857 OCSP_request_add1_nonce() adds a nonce value and optionally
8858 generates a random value. OCSP_check_nonce() checks the
8859 validity of the nonce in an OCSP response.
8862 *) Change function OCSP_request_add() to OCSP_request_add0_id().
8863 This doesn't copy the supplied OCSP_CERTID and avoids the
8864 need to free up the newly created id. Change return type
8865 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
8866 This can then be used to add extensions to the request.
8867 Deleted OCSP_request_new(), since most of its functionality
8868 is now in OCSP_REQUEST_new() (and the case insensitive name
8869 clash) apart from the ability to set the request name which
8870 will be added elsewhere.
8873 *) Update OCSP API. Remove obsolete extensions argument from
8874 various functions. Extensions are now handled using the new
8875 OCSP extension code. New simple OCSP HTTP function which
8876 can be used to send requests and parse the response.
8879 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
8880 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
8881 uses the special reorder version of SET OF to sort the attributes
8882 and reorder them to match the encoded order. This resolves a long
8883 standing problem: a verify on a PKCS7 structure just after signing
8884 it used to fail because the attribute order did not match the
8885 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
8886 it uses the received order. This is necessary to tolerate some broken
8887 software that does not order SET OF. This is handled by encoding
8888 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
8889 to produce the required SET OF.
8892 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
8893 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
8894 files to get correct declarations of the ASN.1 item variables.
8897 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
8898 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
8899 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
8900 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
8901 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
8902 ASN1_ITEM and no wrapper functions.
8905 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
8906 replace the old function pointer based I/O routines. Change most of
8907 the *_d2i_bio() and *_d2i_fp() functions to use these.
8910 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
8911 lines, recognize more "algorithms" that can be deselected, and make
8912 it complain about algorithm deselection that isn't recognised.
8915 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
8916 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
8917 to use new functions. Add NO_ASN1_OLD which can be set to remove
8918 some old style ASN1 functions: this can be used to determine if old
8919 code will still work when these eventually go away.
8922 *) New extension functions for OCSP structures, these follow the
8923 same conventions as certificates and CRLs.
8926 *) New function X509V3_add1_i2d(). This automatically encodes and
8927 adds an extension. Its behaviour can be customised with various
8928 flags to append, replace or delete. Various wrappers added for
8929 certificates and CRLs.
8932 *) Fix to avoid calling the underlying ASN1 print routine when
8933 an extension cannot be parsed. Correct a typo in the
8934 OCSP_SERVICELOC extension. Tidy up print OCSP format.
8937 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
8938 entries for variables.
8941 *) Add functionality to apps/openssl.c for detecting locking
8942 problems: As the program is single-threaded, all we have
8943 to do is register a locking callback using an array for
8944 storing which locks are currently held by the program.
8947 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
8948 SSL_get_ex_data_X509_STORE_idx(), which is used in
8949 ssl_verify_cert_chain() and thus can be called at any time
8950 during TLS/SSL handshakes so that thread-safety is essential.
8951 Unfortunately, the ex_data design is not at all suited
8952 for multi-threaded use, so it probably should be abolished.
8955 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
8956 [Broadcom, tweaked and integrated by Geoff Thorpe]
8958 *) Move common extension printing code to new function
8959 X509V3_print_extensions(). Reorganise OCSP print routines and
8960 implement some needed OCSP ASN1 functions. Add OCSP extensions.
8963 *) New function X509_signature_print() to remove duplication in some
8967 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
8968 set (this was treated exactly the same as SET OF previously). This
8969 is used to reorder the STACK representing the structure to match the
8970 encoding. This will be used to get round a problem where a PKCS7
8971 structure which was signed could not be verified because the STACK
8972 order did not reflect the encoded order.
8975 *) Reimplement the OCSP ASN1 module using the new code.
8978 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
8979 for its ASN1 operations. The old style function pointers still exist
8980 for now but they will eventually go away.
8983 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
8984 completely replaces the old ASN1 functionality with a table driven
8985 encoder and decoder which interprets an ASN1_ITEM structure describing
8986 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
8987 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
8988 has also been converted to the new form.
8991 *) Change BN_mod_exp_recp so that negative moduli are tolerated
8992 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
8993 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
8994 for negative moduli.
8997 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
8998 of not touching the result's sign bit.
9001 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
9005 *) Changed the LHASH code to use prototypes for callbacks, and created
9006 macros to declare and implement thin (optionally static) functions
9007 that provide type-safety and avoid function pointer casting for the
9008 type-specific callbacks.
9011 *) Added Kerberos Cipher Suites to be used with TLS, as written in
9013 [Veers Staats <staatsvr@asc.hpc.mil>,
9014 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
9016 *) Reformat the FAQ so the different questions and answers can be divided
9017 in sections depending on the subject.
9020 *) Have the zlib compression code load ZLIB.DLL dynamically under
9024 *) New function BN_mod_sqrt for computing square roots modulo a prime
9025 (using the probabilistic Tonelli-Shanks algorithm unless
9026 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
9027 be handled deterministically).
9028 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
9030 *) Make BN_mod_inverse faster by explicitly handling small quotients
9031 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
9032 512 bits], about 30% for larger ones [1024 or 2048 bits].)
9035 *) New function BN_kronecker.
9038 *) Fix BN_gcd so that it works on negative inputs; the result is
9039 positive unless both parameters are zero.
9040 Previously something reasonably close to an infinite loop was
9041 possible because numbers could be growing instead of shrinking
9042 in the implementation of Euclid's algorithm.
9045 *) Fix BN_is_word() and BN_is_one() macros to take into account the
9046 sign of the number in question.
9048 Fix BN_is_word(a,w) to work correctly for w == 0.
9050 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
9051 because its test if the absolute value of 'a' equals 'w'.
9052 Note that BN_abs_is_word does *not* handle w == 0 reliably;
9053 it exists mostly for use in the implementations of BN_is_zero(),
9054 BN_is_one(), and BN_is_word().
9057 *) New function BN_swap.
9060 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
9061 the exponentiation functions are more likely to produce reasonable
9062 results on negative inputs.
9065 *) Change BN_mod_mul so that the result is always non-negative.
9066 Previously, it could be negative if one of the factors was negative;
9067 I don't think anyone really wanted that behaviour.
9070 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
9071 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
9072 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
9073 and add new functions:
9082 BN_mod_lshift1_quick
9086 These functions always generate non-negative results.
9088 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
9089 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
9091 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
9092 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
9093 be reduced modulo m.
9094 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
9097 The following entry accidentally appeared in the CHANGES file
9098 distributed with OpenSSL 0.9.7. The modifications described in
9099 it do *not* apply to OpenSSL 0.9.7.
9101 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
9102 was actually never needed) and in BN_mul(). The removal in BN_mul()
9103 required a small change in bn_mul_part_recursive() and the addition
9104 of the functions bn_cmp_part_words(), bn_sub_part_words() and
9105 bn_add_part_words(), which do the same thing as bn_cmp_words(),
9106 bn_sub_words() and bn_add_words() except they take arrays with
9111 *) In 'openssl passwd', verify passwords read from the terminal
9112 unless the '-salt' option is used (which usually means that
9113 verification would just waste user's time since the resulting
9114 hash is going to be compared with some given password hash)
9115 or the new '-noverify' option is used.
9117 This is an incompatible change, but it does not affect
9118 non-interactive use of 'openssl passwd' (passwords on the command
9119 line, '-stdin' option, '-in ...' option) and thus should not
9123 *) Remove all references to RSAref, since there's no more need for it.
9126 *) Make DSO load along a path given through an environment variable
9127 (SHLIB_PATH) with shl_load().
9130 *) Constify the ENGINE code as a result of BIGNUM constification.
9131 Also constify the RSA code and most things related to it. In a
9132 few places, most notable in the depth of the ASN.1 code, ugly
9133 casts back to non-const were required (to be solved at a later
9137 *) Make it so the openssl application has all engines loaded by default.
9140 *) Constify the BIGNUM routines a little more.
9143 *) Add the following functions:
9145 ENGINE_load_cswift()
9147 ENGINE_load_atalla()
9149 ENGINE_load_builtin_engines()
9151 That way, an application can itself choose if external engines that
9152 are built-in in OpenSSL shall ever be used or not. The benefit is
9153 that applications won't have to be linked with libdl or other dso
9154 libraries unless it's really needed.
9156 Changed 'openssl engine' to load all engines on demand.
9157 Changed the engine header files to avoid the duplication of some
9158 declarations (they differed!).
9161 *) 'openssl engine' can now list capabilities.
9164 *) Better error reporting in 'openssl engine'.
9167 *) Never call load_dh_param(NULL) in s_server.
9170 *) Add engine application. It can currently list engines by name and
9171 identity, and test if they are actually available.
9174 *) Improve RPM specification file by forcing symbolic linking and making
9175 sure the installed documentation is also owned by root.root.
9176 [Damien Miller <djm@mindrot.org>]
9178 *) Give the OpenSSL applications more possibilities to make use of
9179 keys (public as well as private) handled by engines.
9182 *) Add OCSP code that comes from CertCo.
9185 *) Add VMS support for the Rijndael code.
9188 *) Added untested support for Nuron crypto accelerator.
9191 *) Add support for external cryptographic devices. This code was
9192 previously distributed separately as the "engine" branch.
9193 [Geoff Thorpe, Richard Levitte]
9195 *) Rework the filename-translation in the DSO code. It is now possible to
9196 have far greater control over how a "name" is turned into a filename
9197 depending on the operating environment and any oddities about the
9198 different shared library filenames on each system.
9201 *) Support threads on FreeBSD-elf in Configure.
9204 *) Fix for SHA1 assembly problem with MASM: it produces
9205 warnings about corrupt line number information when assembling
9206 with debugging information. This is caused by the overlapping
9208 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
9211 NCONF_get_number() has no error checking at all. As a replacement,
9212 NCONF_get_number_e() is defined (_e for "error checking") and is
9213 promoted strongly. The old NCONF_get_number is kept around for
9214 binary backward compatibility.
9215 Make it possible for methods to load from something other than a BIO,
9216 by providing a function pointer that is given a name instead of a BIO.
9217 For example, this could be used to load configuration data from an
9221 *) Fix for non blocking accept BIOs. Added new I/O special reason
9222 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
9223 with non blocking I/O was not possible because no retry code was
9224 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
9228 *) Added the beginnings of Rijndael support.
9231 *) Fix for bug in DirectoryString mask setting. Add support for
9232 X509_NAME_print_ex() in 'req' and X509_print_ex() function
9233 to allow certificate printing to more controllable, additional
9234 'certopt' option to 'x509' to allow new printing options to be
9238 *) Clean old EAY MD5 hack from e_os.h.
9241 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
9243 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
9244 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
9245 [Joe Orton, Steve Henson]
9247 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
9249 *) Fix additional bug revealed by the NISCC test suite:
9251 Stop bug triggering large recursion when presented with
9252 certain ASN.1 tags (CVE-2003-0851)
9255 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
9257 *) Fix various bugs revealed by running the NISCC test suite:
9259 Stop out of bounds reads in the ASN1 code when presented with
9260 invalid tags (CVE-2003-0543 and CVE-2003-0544).
9262 If verify callback ignores invalid public key errors don't try to check
9263 certificate signature with the NULL public key.
9267 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
9268 if the server requested one: as stated in TLS 1.0 and SSL 3.0
9272 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
9273 extra data after the compression methods not only for TLS 1.0
9274 but also for SSL 3.0 (as required by the specification).
9275 [Bodo Moeller; problem pointed out by Matthias Loepfe]
9277 *) Change X509_certificate_type() to mark the key as exported/exportable
9278 when it's 512 *bits* long, not 512 bytes.
9281 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
9283 *) Countermeasure against the Klima-Pokorny-Rosa extension of
9284 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
9285 a protocol version number mismatch like a decryption error
9286 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
9289 *) Turn on RSA blinding by default in the default implementation
9290 to avoid a timing attack. Applications that don't want it can call
9291 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
9292 They would be ill-advised to do so in most cases.
9293 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
9295 *) Change RSA blinding code so that it works when the PRNG is not
9296 seeded (in this case, the secret RSA exponent is abused as
9297 an unpredictable seed -- if it is not unpredictable, there
9298 is no point in blinding anyway). Make RSA blinding thread-safe
9299 by remembering the creator's thread ID in rsa->blinding and
9300 having all other threads use local one-time blinding factors
9301 (this requires more computation than sharing rsa->blinding, but
9302 avoids excessive locking; and if an RSA object is not shared
9303 between threads, blinding will still be very fast).
9306 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
9308 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
9309 via timing by performing a MAC computation even if incorrect
9310 block cipher padding has been found. This is a countermeasure
9311 against active attacks where the attacker has to distinguish
9312 between bad padding and a MAC verification error. (CVE-2003-0078)
9314 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
9315 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
9316 Martin Vuagnoux (EPFL, Ilion)]
9318 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
9320 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
9321 memory from its contents. This is done with a counter that will
9322 place alternating values in each byte. This can be used to solve
9323 two issues: 1) the removal of calls to memset() by highly optimizing
9324 compilers, and 2) cleansing with other values than 0, since those can
9325 be read through on certain media, for example a swap space on disk.
9328 *) Bugfix: client side session caching did not work with external caching,
9329 because the session->cipher setting was not restored when reloading
9330 from the external cache. This problem was masked, when
9331 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
9332 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
9335 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
9336 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
9337 [Zeev Lieber <zeev-l@yahoo.com>]
9339 *) Undo an undocumented change introduced in 0.9.6e which caused
9340 repeated calls to OpenSSL_add_all_ciphers() and
9341 OpenSSL_add_all_digests() to be ignored, even after calling
9345 *) Change the default configuration reader to deal with last line not
9346 being properly terminated.
9349 *) Change X509_NAME_cmp() so it applies the special rules on handling
9350 DN values that are of type PrintableString, as well as RDNs of type
9351 emailAddress where the value has the type ia5String.
9352 [stefank@valicert.com via Richard Levitte]
9354 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
9355 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
9356 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
9357 the bitwise-OR of the two for use by the majority of applications
9358 wanting this behaviour, and update the docs. The documented
9359 behaviour and actual behaviour were inconsistent and had been
9360 changing anyway, so this is more a bug-fix than a behavioural
9362 [Geoff Thorpe, diagnosed by Nadav Har'El]
9364 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
9365 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
9368 *) Fix initialization code race conditions in
9369 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
9370 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
9371 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
9372 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
9373 ssl2_get_cipher_by_char(),
9374 ssl3_get_cipher_by_char().
9375 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
9377 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
9378 the cached sessions are flushed, as the remove_cb() might use ex_data
9379 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
9380 (see [openssl.org #212]).
9381 [Geoff Thorpe, Lutz Jaenicke]
9383 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
9384 length, instead of the encoding length to d2i_ASN1_OBJECT.
9387 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
9389 *) [In 0.9.6g-engine release:]
9390 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
9391 [Lynn Gazis <lgazis@rainbow.com>]
9393 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
9395 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
9396 and get fix the header length calculation.
9397 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
9398 Alon Kantor <alonk@checkpoint.com> (and others),
9401 *) Use proper error handling instead of 'assertions' in buffer
9402 overflow checks added in 0.9.6e. This prevents DoS (the
9403 assertions could call abort()).
9404 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
9406 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
9408 *) Add various sanity checks to asn1_get_length() to reject
9409 the ASN1 length bytes if they exceed sizeof(long), will appear
9410 negative or the content length exceeds the length of the
9412 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9414 *) Fix cipher selection routines: ciphers without encryption had no flags
9415 for the cipher strength set and where therefore not handled correctly
9416 by the selection routines (PR #130).
9419 *) Fix EVP_dsa_sha macro.
9423 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
9424 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
9425 that was added in OpenSSL 0.9.6d.
9427 As the countermeasure turned out to be incompatible with some
9428 broken SSL implementations, the new option is part of SSL_OP_ALL.
9429 SSL_OP_ALL is usually employed when compatibility with weird SSL
9430 implementations is desired (e.g. '-bugs' option to 's_client' and
9431 's_server'), so the new option is automatically set in many
9435 *) Changes in security patch:
9437 Changes marked "(CHATS)" were sponsored by the Defense Advanced
9438 Research Projects Agency (DARPA) and Air Force Research Laboratory,
9439 Air Force Materiel Command, USAF, under agreement number
9442 *) Add various sanity checks to asn1_get_length() to reject
9443 the ASN1 length bytes if they exceed sizeof(long), will appear
9444 negative or the content length exceeds the length of the
9445 supplied buffer. (CVE-2002-0659)
9446 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
9448 *) Assertions for various potential buffer overflows, not known to
9450 [Ben Laurie (CHATS)]
9452 *) Various temporary buffers to hold ASCII versions of integers were
9453 too small for 64 bit platforms. (CVE-2002-0655)
9454 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
9456 *) Remote buffer overflow in SSL3 protocol - an attacker could
9457 supply an oversized session ID to a client. (CVE-2002-0656)
9458 [Ben Laurie (CHATS)]
9460 *) Remote buffer overflow in SSL2 protocol - an attacker could
9461 supply an oversized client master key. (CVE-2002-0656)
9462 [Ben Laurie (CHATS)]
9464 Changes between 0.9.6c and 0.9.6d [9 May 2002]
9466 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
9467 encoded as NULL) with id-dsa-with-sha1.
9468 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
9470 *) Check various X509_...() return values in apps/req.c.
9471 [Nils Larsch <nla@trustcenter.de>]
9473 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
9474 an end-of-file condition would erroneously be flagged, when the CRLF
9475 was just at the end of a processed block. The bug was discovered when
9476 processing data through a buffering memory BIO handing the data to a
9477 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
9478 <ptsekov@syntrex.com> and Nedelcho Stanev.
9481 *) Implement a countermeasure against a vulnerability recently found
9482 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
9483 before application data chunks to avoid the use of known IVs
9484 with data potentially chosen by the attacker.
9487 *) Fix length checks in ssl3_get_client_hello().
9490 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
9491 to prevent ssl3_read_internal() from incorrectly assuming that
9492 ssl3_read_bytes() found application data while handshake
9493 processing was enabled when in fact s->s3->in_read_app_data was
9494 merely automatically cleared during the initial handshake.
9495 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
9497 *) Fix object definitions for Private and Enterprise: they were not
9498 recognized in their shortname (=lowercase) representation. Extend
9499 obj_dat.pl to issue an error when using undefined keywords instead
9500 of silently ignoring the problem (Svenning Sorensen
9501 <sss@sss.dnsalias.net>).
9504 *) Fix DH_generate_parameters() so that it works for 'non-standard'
9505 generators, i.e. generators other than 2 and 5. (Previously, the
9506 code did not properly initialise the 'add' and 'rem' values to
9507 BN_generate_prime().)
9509 In the new general case, we do not insist that 'generator' is
9510 actually a primitive root: This requirement is rather pointless;
9511 a generator of the order-q subgroup is just as good, if not
9515 *) Map new X509 verification errors to alerts. Discovered and submitted by
9516 Tom Wu <tom@arcot.com>.
9519 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
9520 returning non-zero before the data has been completely received
9521 when using non-blocking I/O.
9522 [Bodo Moeller; problem pointed out by John Hughes]
9524 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
9525 [Ben Laurie, Lutz Jaenicke]
9527 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
9528 Yoram Zahavi <YoramZ@gilian.com>).
9531 *) Add information about CygWin 1.3 and on, and preserve proper
9532 configuration for the versions before that.
9533 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
9535 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
9536 check whether we deal with a copy of a session and do not delete from
9537 the cache in this case. Problem reported by "Izhar Shoshani Levi"
9538 <izhar@checkpoint.com>.
9541 *) Do not store session data into the internal session cache, if it
9542 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
9543 flag is set). Proposed by Aslam <aslam@funk.com>.
9546 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
9550 *) [In 0.9.6d-engine release:]
9551 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
9552 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
9554 *) Add the configuration target linux-s390x.
9555 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
9557 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
9558 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
9559 variable as an indication that a ClientHello message has been
9560 received. As the flag value will be lost between multiple
9561 invocations of ssl3_accept when using non-blocking I/O, the
9562 function may not be aware that a handshake has actually taken
9563 place, thus preventing a new session from being added to the
9566 To avoid this problem, we now set s->new_session to 2 instead of
9567 using a local variable.
9568 [Lutz Jaenicke, Bodo Moeller]
9570 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
9571 if the SSL_R_LENGTH_MISMATCH error is detected.
9572 [Geoff Thorpe, Bodo Moeller]
9574 *) New 'shared_ldflag' column in Configure platform table.
9577 *) Fix EVP_CIPHER_mode macro.
9578 ["Dan S. Camper" <dan@bti.net>]
9580 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
9581 type, we must throw them away by setting rr->length to 0.
9582 [D P Chang <dpc@qualys.com>]
9584 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
9586 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
9587 <Dominikus.Scherkl@biodata.com>. (The previous implementation
9588 worked incorrectly for those cases where range = 10..._2 and
9589 3*range is two bits longer than range.)
9592 *) Only add signing time to PKCS7 structures if it is not already
9596 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
9597 OBJ_ld_ce should be OBJ_id_ce.
9598 Also some ip-pda OIDs in crypto/objects/objects.txt were
9599 incorrect (cf. RFC 3039).
9600 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
9602 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
9603 returns early because it has nothing to do.
9604 [Andy Schneider <andy.schneider@bjss.co.uk>]
9606 *) [In 0.9.6c-engine release:]
9607 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
9608 [Andy Schneider <andy.schneider@bjss.co.uk>]
9610 *) [In 0.9.6c-engine release:]
9611 Add support for Cryptographic Appliance's keyserver technology.
9612 (Use engine 'keyclient')
9613 [Cryptographic Appliances and Geoff Thorpe]
9615 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
9616 is called via tools/c89.sh because arguments have to be
9617 rearranged (all '-L' options must appear before the first object
9619 [Richard Shapiro <rshapiro@abinitio.com>]
9621 *) [In 0.9.6c-engine release:]
9622 Add support for Broadcom crypto accelerator cards, backported
9624 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
9626 *) [In 0.9.6c-engine release:]
9627 Add support for SureWare crypto accelerator cards from
9628 Baltimore Technologies. (Use engine 'sureware')
9629 [Baltimore Technologies and Mark Cox]
9631 *) [In 0.9.6c-engine release:]
9632 Add support for crypto accelerator cards from Accelerated
9633 Encryption Processing, www.aep.ie. (Use engine 'aep')
9634 [AEP Inc. and Mark Cox]
9636 *) Add a configuration entry for gcc on UnixWare.
9637 [Gary Benson <gbenson@redhat.com>]
9639 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
9640 messages are stored in a single piece (fixed-length part and
9641 variable-length part combined) and fix various bugs found on the way.
9644 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
9645 instead. BIO_gethostbyname() does not know what timeouts are
9646 appropriate, so entries would stay in cache even when they have
9648 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
9650 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
9651 faced with a pathologically small ClientHello fragment that does
9652 not contain client_version: Instead of aborting with an error,
9653 simply choose the highest available protocol version (i.e.,
9654 TLS 1.0 unless it is disabled). In practice, ClientHello
9655 messages are never sent like this, but this change gives us
9656 strictly correct behaviour at least for TLS.
9659 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
9660 never resets s->method to s->ctx->method when called from within
9661 one of the SSL handshake functions.
9662 [Bodo Moeller; problem pointed out by Niko Baric]
9664 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
9665 (sent using the client's version number) if client_version is
9666 smaller than the protocol version in use. Also change
9667 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
9668 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
9669 the client will at least see that alert.
9672 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
9676 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
9677 client receives HelloRequest while in a handshake.
9678 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
9680 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
9681 should end in 'break', not 'goto end' which circumvents various
9682 cleanups done in state SSL_ST_OK. But session related stuff
9683 must be disabled for SSL_ST_OK in the case that we just sent a
9686 Also avoid some overhead by not calling ssl_init_wbio_buffer()
9687 before just sending a HelloRequest.
9688 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
9690 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
9691 reveal whether illegal block cipher padding was found or a MAC
9692 verification error occurred. (Neither SSLerr() codes nor alerts
9693 are directly visible to potential attackers, but the information
9694 may leak via logfiles.)
9696 Similar changes are not required for the SSL 2.0 implementation
9697 because the number of padding bytes is sent in clear for SSL 2.0,
9698 and the extra bytes are just ignored. However ssl/s2_pkt.c
9699 failed to verify that the purported number of padding bytes is in
9703 *) Add OpenUNIX-8 support including shared libraries
9704 (Boyd Lynn Gerber <gerberb@zenez.com>).
9707 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
9708 'wristwatch attack' using huge encoding parameters (cf.
9709 James H. Manger's CRYPTO 2001 paper). Note that the
9710 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
9711 encoding parameters and hence was not vulnerable.
9714 *) BN_sqr() bug fix.
9715 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
9717 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
9718 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
9719 followed by modular reduction.
9720 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
9722 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
9723 equivalent based on BN_pseudo_rand() instead of BN_rand().
9726 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
9727 This function was broken, as the check for a new client hello message
9728 to handle SGC did not allow these large messages.
9729 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
9732 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
9735 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
9736 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
9739 *) Rework the configuration and shared library support for Tru64 Unix.
9740 The configuration part makes use of modern compiler features and
9741 still retains old compiler behavior for those that run older versions
9742 of the OS. The shared library support part includes a variant that
9743 uses the RPATH feature, and is available through the special
9744 configuration target "alpha-cc-rpath", which will never be selected
9746 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
9748 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
9749 with the same message size as in ssl3_get_certificate_request().
9750 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
9751 messages might inadvertently be reject as too long.
9752 [Petr Lampa <lampa@fee.vutbr.cz>]
9754 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
9757 *) Modified SSL library such that the verify_callback that has been set
9758 specificly for an SSL object with SSL_set_verify() is actually being
9759 used. Before the change, a verify_callback set with this function was
9760 ignored and the verify_callback() set in the SSL_CTX at the time of
9761 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
9762 to allow the necessary settings.
9765 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
9766 explicitly to NULL, as at least on Solaris 8 this seems not always to be
9767 done automatically (in contradiction to the requirements of the C
9768 standard). This made problems when used from OpenSSH.
9771 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
9772 dh->length and always used
9774 BN_rand_range(priv_key, dh->p).
9776 BN_rand_range() is not necessary for Diffie-Hellman, and this
9777 specific range makes Diffie-Hellman unnecessarily inefficient if
9778 dh->length (recommended exponent length) is much smaller than the
9779 length of dh->p. We could use BN_rand_range() if the order of
9780 the subgroup was stored in the DH structure, but we only have
9785 BN_rand(priv_key, l, ...)
9787 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
9793 RSA_eay_public_encrypt
9794 RSA_eay_private_decrypt
9795 RSA_eay_private_encrypt (signing)
9796 RSA_eay_public_decrypt (signature verification)
9798 (default implementations for RSA_public_encrypt,
9799 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
9800 always reject numbers >= n.
9803 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
9804 to synchronize access to 'locking_thread'. This is necessary on
9805 systems where access to 'locking_thread' (an 'unsigned long'
9806 variable) is not atomic.
9809 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
9810 *before* setting the 'crypto_lock_rand' flag. The previous code had
9811 a race condition if 0 is a valid thread ID.
9812 [Travis Vitek <vitek@roguewave.com>]
9814 *) Add support for shared libraries under Irix.
9815 [Albert Chin-A-Young <china@thewrittenword.com>]
9817 *) Add configuration option to build on Linux on both big-endian and
9819 [Ralf Baechle <ralf@uni-koblenz.de>]
9821 *) Add the possibility to create shared libraries on HP-UX.
9824 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
9826 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
9827 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
9828 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
9829 PRNG state recovery was possible based on the output of
9830 one PRNG request appropriately sized to gain knowledge on
9831 'md' followed by enough consecutive 1-byte PRNG requests
9832 to traverse all of 'state'.
9834 1. When updating 'md_local' (the current thread's copy of 'md')
9835 during PRNG output generation, hash all of the previous
9836 'md_local' value, not just the half used for PRNG output.
9838 2. Make the number of bytes from 'state' included into the hash
9839 independent from the number of PRNG bytes requested.
9841 The first measure alone would be sufficient to avoid
9842 Markku-Juhani's attack. (Actually it had never occurred
9843 to me that the half of 'md_local' used for chaining was the
9844 half from which PRNG output bytes were taken -- I had always
9845 assumed that the secret half would be used.) The second
9846 measure makes sure that additional data from 'state' is never
9847 mixed into 'md_local' in small portions; this heuristically
9848 further strengthens the PRNG.
9851 *) Fix crypto/bn/asm/mips3.s.
9854 *) When only the key is given to "enc", the IV is undefined. Print out
9855 an error message in this case.
9858 *) Handle special case when X509_NAME is empty in X509 printing routines.
9861 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
9862 positive and less than q.
9865 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
9866 used: it isn't thread safe and the add_lock_callback should handle
9868 [Paul Rose <Paul.Rose@bridge.com>]
9870 *) Verify that incoming data obeys the block size in
9871 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
9875 [Ulf Möller, Bodo Möller]
9877 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
9878 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
9879 when fixing the server behaviour for backwards-compatible 'client
9880 hello' messages. (Note that the attack is impractical against
9881 SSL 3.0 and TLS 1.0 anyway because length and version checking
9882 means that the probability of guessing a valid ciphertext is
9883 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
9886 Before 0.9.5, the countermeasure (hide the error by generating a
9887 random 'decryption result') did not work properly because
9888 ERR_clear_error() was missing, meaning that SSL_get_error() would
9889 detect the supposedly ignored error.
9891 Both problems are now fixed.
9894 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
9895 (previously it was 1024).
9898 *) Fix for compatibility mode trust settings: ignore trust settings
9899 unless some valid trust or reject settings are present.
9902 *) Fix for blowfish EVP: its a variable length cipher.
9905 *) Fix various bugs related to DSA S/MIME verification. Handle missing
9906 parameters in DSA public key structures and return an error in the
9907 DSA routines if parameters are absent.
9910 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
9911 in the current directory if neither $RANDFILE nor $HOME was set.
9912 RAND_file_name() in 0.9.6a returned NULL in this case. This has
9913 caused some confusion to Windows users who haven't defined $HOME.
9914 Thus RAND_file_name() is changed again: e_os.h can define a
9915 DEFAULT_HOME, which will be used if $HOME is not set.
9916 For Windows, we use "C:"; on other platforms, we still require
9917 environment variables.
9919 *) Move 'if (!initialized) RAND_poll()' into regions protected by
9920 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
9921 having multiple threads call RAND_poll() concurrently.
9924 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
9925 combination of a flag and a thread ID variable.
9926 Otherwise while one thread is in ssleay_rand_bytes (which sets the
9927 flag), *other* threads can enter ssleay_add_bytes without obeying
9928 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
9929 that they do not hold after the first thread unsets add_do_not_lock).
9932 *) Change bctest again: '-x' expressions are not available in all
9936 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
9938 *) Fix a couple of memory leaks in PKCS7_dataDecode()
9939 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
9941 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
9942 the default extension for executables, if any. Also, make the perl
9943 scripts that use symlink() to test if it really exists and use "cp"
9944 if it doesn't. All this made OpenSSL compilable and installable in
9948 *) Fix for asn1_GetSequence() for indefinite length constructed data.
9949 If SEQUENCE is length is indefinite just set c->slen to the total
9950 amount of data available.
9951 [Steve Henson, reported by shige@FreeBSD.org]
9952 [This change does not apply to 0.9.7.]
9954 *) Change bctest to avoid here-documents inside command substitution
9955 (workaround for FreeBSD /bin/sh bug).
9956 For compatibility with Ultrix, avoid shell functions (introduced
9957 in the bctest version that searches along $PATH).
9960 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
9961 with des_encrypt() defined on some operating systems, like Solaris
9965 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
9966 On the Importance of Eliminating Errors in Cryptographic
9967 Computations, J. Cryptology 14 (2001) 2, 101-119,
9968 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
9971 *) MIPS assembler BIGNUM division bug fix.
9974 *) Disabled incorrect Alpha assembler code.
9977 *) Fix PKCS#7 decode routines so they correctly update the length
9978 after reading an EOC for the EXPLICIT tag.
9980 [This change does not apply to 0.9.7.]
9982 *) Fix bug in PKCS#12 key generation routines. This was triggered
9983 if a 3DES key was generated with a 0 initial byte. Include
9984 PKCS12_BROKEN_KEYGEN compilation option to retain the old
9985 (but broken) behaviour.
9988 *) Enhance bctest to search for a working bc along $PATH and print
9990 [Tim Rice <tim@multitalents.net> via Richard Levitte]
9992 *) Fix memory leaks in err.c: free err_data string if necessary;
9993 don't write to the wrong index in ERR_set_error_data.
9996 *) Implement ssl23_peek (analogous to ssl23_read), which previously
10000 *) Replace rdtsc with _emit statements for VC++ version 5.
10001 [Jeremy Cooper <jeremy@baymoo.org>]
10003 *) Make it possible to reuse SSLv2 sessions.
10006 *) In copy_email() check for >= 0 as a return value for
10007 X509_NAME_get_index_by_NID() since 0 is a valid index.
10008 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
10010 *) Avoid coredump with unsupported or invalid public keys by checking if
10011 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
10012 PKCS7_verify() fails with non detached data.
10015 *) Don't use getenv in library functions when run as setuid/setgid.
10016 New function OPENSSL_issetugid().
10019 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
10020 due to incorrect handling of multi-threading:
10022 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
10024 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
10026 3. Count how many times MemCheck_off() has been called so that
10027 nested use can be treated correctly. This also avoids
10028 inband-signalling in the previous code (which relied on the
10029 assumption that thread ID 0 is impossible).
10032 *) Add "-rand" option also to s_client and s_server.
10035 *) Fix CPU detection on Irix 6.x.
10036 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
10037 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
10039 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
10042 [This change does not apply to 0.9.7.]
10044 *) Use the cached encoding of an X509_NAME structure rather than
10045 copying it. This is apparently the reason for the libsafe "errors"
10046 but the code is actually correct.
10049 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
10050 Bleichenbacher's DSA attack.
10051 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
10052 to be set and top=0 forces the highest bit to be set; top=-1 is new
10053 and leaves the highest bit random.
10054 [Ulf Moeller, Bodo Moeller]
10056 *) In the NCONF_...-based implementations for CONF_... queries
10057 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
10058 a temporary CONF structure with the data component set to NULL
10059 (which gives segmentation faults in lh_retrieve).
10060 Instead, use NULL for the CONF pointer in CONF_get_string and
10061 CONF_get_number (which may use environment variables) and directly
10062 return NULL from CONF_get_section.
10065 *) Fix potential buffer overrun for EBCDIC.
10068 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
10069 keyUsage if basicConstraints absent for a CA.
10072 *) Make SMIME_write_PKCS7() write mail header values with a format that
10073 is more generally accepted (no spaces before the semicolon), since
10074 some programs can't parse those values properly otherwise. Also make
10075 sure BIO's that break lines after each write do not create invalid
10079 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
10080 macros previously used would not encode an empty SEQUENCE OF
10081 and break the signature.
10083 [This change does not apply to 0.9.7.]
10085 *) Zero the premaster secret after deriving the master secret in
10089 *) Add some EVP_add_digest_alias registrations (as found in
10090 OpenSSL_add_all_digests()) to SSL_library_init()
10091 aka OpenSSL_add_ssl_algorithms(). This provides improved
10092 compatibility with peers using X.509 certificates
10093 with unconventional AlgorithmIdentifier OIDs.
10096 *) Fix for Irix with NO_ASM.
10097 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
10099 *) ./config script fixes.
10100 [Ulf Moeller, Richard Levitte]
10102 *) Fix 'openssl passwd -1'.
10105 *) Change PKCS12_key_gen_asc() so it can cope with non null
10106 terminated strings whose length is passed in the passlen
10107 parameter, for example from PEM callbacks. This was done
10108 by adding an extra length parameter to asc2uni().
10109 [Steve Henson, reported by <oddissey@samsung.co.kr>]
10111 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
10112 call failed, free the DSA structure.
10115 *) Fix to uni2asc() to cope with zero length Unicode strings.
10116 These are present in some PKCS#12 files.
10119 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
10120 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
10121 when writing a 32767 byte record.
10122 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
10124 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
10125 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
10127 (RSA objects have a reference count access to which is protected
10128 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
10129 so they are meant to be shared between threads.)
10130 [Bodo Moeller, Geoff Thorpe; original patch submitted by
10131 "Reddie, Steven" <Steven.Reddie@ca.com>]
10133 *) Fix a deadlock in CRYPTO_mem_leaks().
10136 *) Use better test patterns in bntest.
10139 *) rand_win.c fix for Borland C.
10142 *) BN_rshift bugfix for n == 0.
10145 *) Add a 'bctest' script that checks for some known 'bc' bugs
10146 so that 'make test' does not abort just because 'bc' is broken.
10149 *) Store verify_result within SSL_SESSION also for client side to
10150 avoid potential security hole. (Re-used sessions on the client side
10151 always resulted in verify_result==X509_V_OK, not using the original
10152 result of the server certificate verification.)
10155 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
10156 SSL3_RT_APPLICATION_DATA, return 0.
10157 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
10161 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
10162 releases, have been re-implemented by renaming the previous
10163 implementations of ssl2_read and ssl3_read to ssl2_read_internal
10164 and ssl3_read_internal, respectively, and adding 'peek' parameters
10165 to them. The new ssl[23]_{read,peek} functions are calls to
10166 ssl[23]_read_internal with the 'peek' flag set appropriately.
10167 A 'peek' parameter has also been added to ssl3_read_bytes, which
10168 does the actual work for ssl3_read_internal.
10171 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
10172 the method-specific "init()" handler. Also clean up ex_data after
10173 calling the method-specific "finish()" handler. Previously, this was
10174 happening the other way round.
10177 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
10178 The previous value, 12, was not always sufficient for BN_mod_exp().
10181 *) Make sure that shared libraries get the internal name engine with
10182 the full version number and not just 0. This should mark the
10183 shared libraries as not backward compatible. Of course, this should
10184 be changed again when we can guarantee backward binary compatibility.
10187 *) Fix typo in get_cert_by_subject() in by_dir.c
10188 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
10190 *) Rework the system to generate shared libraries:
10192 - Make note of the expected extension for the shared libraries and
10193 if there is a need for symbolic links from for example libcrypto.so.0
10194 to libcrypto.so.0.9.7. There is extended info in Configure for
10197 - Make as few rebuilds of the shared libraries as possible.
10199 - Still avoid linking the OpenSSL programs with the shared libraries.
10201 - When installing, install the shared libraries separately from the
10205 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
10207 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
10208 and not in SSL_clear because the latter is also used by the
10209 accept/connect functions; previously, the settings made by
10210 SSL_set_read_ahead would be lost during the handshake.
10211 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
10213 *) Correct util/mkdef.pl to be selective about disabled algorithms.
10214 Previously, it would create entries for disabled algorithms no
10218 *) Added several new manual pages for SSL_* function.
10221 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
10223 *) In ssl23_get_client_hello, generate an error message when faced
10224 with an initial SSL 3.0/TLS record that is too small to contain the
10225 first two bytes of the ClientHello message, i.e. client_version.
10226 (Note that this is a pathologic case that probably has never happened
10227 in real life.) The previous approach was to use the version number
10228 from the record header as a substitute; but our protocol choice
10229 should not depend on that one because it is not authenticated
10230 by the Finished messages.
10233 *) More robust randomness gathering functions for Windows.
10234 [Jeffrey Altman <jaltman@columbia.edu>]
10236 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
10237 not set then we don't setup the error code for issuer check errors
10238 to avoid possibly overwriting other errors which the callback does
10239 handle. If an application does set the flag then we assume it knows
10240 what it is doing and can handle the new informational codes
10244 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
10245 a general "ANY" type, as such it should be able to decode anything
10246 including tagged types. However it didn't check the class so it would
10247 wrongly interpret tagged types in the same way as their universal
10248 counterpart and unknown types were just rejected. Changed so that the
10249 tagged and unknown types are handled in the same way as a SEQUENCE:
10250 that is the encoding is stored intact. There is also a new type
10251 "V_ASN1_OTHER" which is used when the class is not universal, in this
10252 case we have no idea what the actual type is so we just lump them all
10256 *) On VMS, stdout may very well lead to a file that is written to
10257 in a record-oriented fashion. That means that every write() will
10258 write a separate record, which will be read separately by the
10259 programs trying to read from it. This can be very confusing.
10261 The solution is to put a BIO filter in the way that will buffer
10262 text until a linefeed is reached, and then write everything a
10263 line at a time, so every record written will be an actual line,
10264 not chunks of lines and not (usually doesn't happen, but I've
10265 seen it once) several lines in one record. BIO_f_linebuffer() is
10268 Currently, it's a VMS-only method, because that's where it has
10269 been tested well enough.
10272 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
10273 it can return incorrect results.
10274 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
10275 but it was in 0.9.6-beta[12].)
10278 *) Disable the check for content being present when verifying detached
10279 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
10280 include zero length content when signing messages.
10283 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
10284 BIO_ctrl (for BIO pairs).
10287 *) Add DSO method for VMS.
10290 *) Bug fix: Montgomery multiplication could produce results with the
10294 *) Add RPM specification openssl.spec and modify it to build three
10295 packages. The default package contains applications, application
10296 documentation and run-time libraries. The devel package contains
10297 include files, static libraries and function documentation. The
10298 doc package contains the contents of the doc directory. The original
10299 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
10302 *) Add a large number of documentation files for many SSL routines.
10303 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10305 *) Add a configuration entry for Sony News 4.
10306 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
10308 *) Don't set the two most significant bits to one when generating a
10309 random number < q in the DSA library.
10312 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
10313 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
10314 the underlying transport is blocking) if a handshake took place.
10315 (The default behaviour is needed by applications such as s_client
10316 and s_server that use select() to determine when to use SSL_read;
10317 but for applications that know in advance when to expect data, it
10318 just makes things more complicated.)
10321 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
10325 *) Add a few more EBCDIC conditionals that make `req' and `x509'
10326 work better on such systems.
10327 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10329 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
10330 Update PKCS12_parse() so it copies the friendlyName and the
10331 keyid to the certificates aux info.
10334 *) Fix bug in PKCS7_verify() which caused an infinite loop
10335 if there was more than one signature.
10336 [Sven Uszpelkat <su@celocom.de>]
10338 *) Major change in util/mkdef.pl to include extra information
10339 about each symbol, as well as presenting variables as well
10340 as functions. This change means that there's n more need
10341 to rebuild the .num files when some algorithms are excluded.
10344 *) Allow the verify time to be set by an application,
10345 rather than always using the current time.
10348 *) Phase 2 verify code reorganisation. The certificate
10349 verify code now looks up an issuer certificate by a
10350 number of criteria: subject name, authority key id
10351 and key usage. It also verifies self signed certificates
10352 by the same criteria. The main comparison function is
10353 X509_check_issued() which performs these checks.
10355 Lot of changes were necessary in order to support this
10356 without completely rewriting the lookup code.
10358 Authority and subject key identifier are now cached.
10360 The LHASH 'certs' is X509_STORE has now been replaced
10361 by a STACK_OF(X509_OBJECT). This is mainly because an
10362 LHASH can't store or retrieve multiple objects with
10363 the same hash value.
10365 As a result various functions (which were all internal
10366 use only) have changed to handle the new X509_STORE
10367 structure. This will break anything that messed round
10368 with X509_STORE internally.
10370 The functions X509_STORE_add_cert() now checks for an
10371 exact match, rather than just subject name.
10373 The X509_STORE API doesn't directly support the retrieval
10374 of multiple certificates matching a given criteria, however
10375 this can be worked round by performing a lookup first
10376 (which will fill the cache with candidate certificates)
10377 and then examining the cache for matches. This is probably
10378 the best we can do without throwing out X509_LOOKUP
10379 entirely (maybe later...).
10381 The X509_VERIFY_CTX structure has been enhanced considerably.
10383 All certificate lookup operations now go via a get_issuer()
10384 callback. Although this currently uses an X509_STORE it
10385 can be replaced by custom lookups. This is a simple way
10386 to bypass the X509_STORE hackery necessary to make this
10387 work and makes it possible to use more efficient techniques
10388 in future. A very simple version which uses a simple
10389 STACK for its trusted certificate store is also provided
10390 using X509_STORE_CTX_trusted_stack().
10392 The verify_cb() and verify() callbacks now have equivalents
10393 in the X509_STORE_CTX structure.
10395 X509_STORE_CTX also has a 'flags' field which can be used
10396 to customise the verify behaviour.
10399 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
10400 excludes S/MIME capabilities.
10403 *) When a certificate request is read in keep a copy of the
10404 original encoding of the signed data and use it when outputting
10405 again. Signatures then use the original encoding rather than
10406 a decoded, encoded version which may cause problems if the
10407 request is improperly encoded.
10410 *) For consistency with other BIO_puts implementations, call
10411 buffer_write(b, ...) directly in buffer_puts instead of calling
10414 In BIO_puts, increment b->num_write as in BIO_write.
10415 [Peter.Sylvester@EdelWeb.fr]
10417 *) Fix BN_mul_word for the case where the word is 0. (We have to use
10418 BN_zero, we may not return a BIGNUM with an array consisting of
10419 words set to zero.)
10422 *) Avoid calling abort() from within the library when problems are
10423 detected, except if preprocessor symbols have been defined
10424 (such as REF_CHECK, BN_DEBUG etc.).
10427 *) New openssl application 'rsautl'. This utility can be
10428 used for low level RSA operations. DER public key
10429 BIO/fp routines also added.
10432 *) New Configure entry and patches for compiling on QNX 4.
10433 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
10435 *) A demo state-machine implementation was sponsored by
10436 Nuron (http://www.nuron.com/) and is now available in
10437 demos/state_machine.
10440 *) New options added to the 'dgst' utility for signature
10441 generation and verification.
10444 *) Unrecognized PKCS#7 content types are now handled via a
10445 catch all ASN1_TYPE structure. This allows unsupported
10446 types to be stored as a "blob" and an application can
10447 encode and decode it manually.
10450 *) Fix various signed/unsigned issues to make a_strex.c
10451 compile under VC++.
10452 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
10454 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
10455 length if passed a buffer. ASN1_INTEGER_to_BN failed
10456 if passed a NULL BN and its argument was negative.
10457 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
10459 *) Modification to PKCS#7 encoding routines to output definite
10460 length encoding. Since currently the whole structures are in
10461 memory there's not real point in using indefinite length
10462 constructed encoding. However if OpenSSL is compiled with
10463 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
10466 *) Added BIO_vprintf() and BIO_vsnprintf().
10469 *) Added more prefixes to parse for in the strings written
10470 through a logging bio, to cover all the levels that are available
10471 through syslog. The prefixes are now:
10473 PANIC, EMERG, EMR => LOG_EMERG
10474 ALERT, ALR => LOG_ALERT
10475 CRIT, CRI => LOG_CRIT
10476 ERROR, ERR => LOG_ERR
10477 WARNING, WARN, WAR => LOG_WARNING
10478 NOTICE, NOTE, NOT => LOG_NOTICE
10479 INFO, INF => LOG_INFO
10480 DEBUG, DBG => LOG_DEBUG
10482 and as before, if none of those prefixes are present at the
10483 beginning of the string, LOG_ERR is chosen.
10485 On Win32, the LOG_* levels are mapped according to this:
10487 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
10488 LOG_WARNING => EVENTLOG_WARNING_TYPE
10489 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
10493 *) Made it possible to reconfigure with just the configuration
10494 argument "reconf" or "reconfigure". The command line arguments
10495 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
10496 and are retrieved from there when reconfiguring.
10499 *) MD4 implemented.
10500 [Assar Westerlund <assar@sics.se>, Richard Levitte]
10502 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
10505 *) The obj_dat.pl script was messing up the sorting of object
10506 names. The reason was that it compared the quoted version
10507 of strings as a result "OCSP" > "OCSP Signing" because
10508 " > SPACE. Changed script to store unquoted versions of
10509 names and add quotes on output. It was also omitting some
10510 names from the lookup table if they were given a default
10511 value (that is if SN is missing it is given the same
10512 value as LN and vice versa), these are now added on the
10513 grounds that if an object has a name we should be able to
10514 look it up. Finally added warning output when duplicate
10515 short or long names are found.
10518 *) Changes needed for Tandem NSK.
10519 [Scott Uroff <scott@xypro.com>]
10521 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
10522 RSA_padding_check_SSLv23(), special padding was never detected
10523 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
10524 version rollback attacks was not effective.
10526 In s23_clnt.c, don't use special rollback-attack detection padding
10527 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
10528 client; similarly, in s23_srvr.c, don't do the rollback check if
10529 SSL 2.0 is the only protocol enabled in the server.
10532 *) Make it possible to get hexdumps of unprintable data with 'openssl
10533 asn1parse'. By implication, the functions ASN1_parse_dump() and
10534 BIO_dump_indent() are added.
10537 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
10538 these print out strings and name structures based on various
10539 flags including RFC2253 support and proper handling of
10540 multibyte characters. Added options to the 'x509' utility
10541 to allow the various flags to be set.
10544 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
10545 Also change the functions X509_cmp_current_time() and
10546 X509_gmtime_adj() work with an ASN1_TIME structure,
10547 this will enable certificates using GeneralizedTime in validity
10548 dates to be checked.
10551 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
10552 negative public key encodings) on by default,
10553 NO_NEG_PUBKEY_BUG can be set to disable it.
10556 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
10557 content octets. An i2c_ASN1_OBJECT is unnecessary because
10558 the encoding can be trivially obtained from the structure.
10561 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
10562 not read locks (CRYPTO_r_[un]lock).
10565 *) A first attempt at creating official support for shared
10566 libraries through configuration. I've kept it so the
10567 default is static libraries only, and the OpenSSL programs
10568 are always statically linked for now, but there are
10569 preparations for dynamic linking in place.
10570 This has been tested on Linux and Tru64.
10573 *) Randomness polling function for Win9x, as described in:
10574 Peter Gutmann, Software Generation of Practically Strong
10578 *) Fix so PRNG is seeded in req if using an already existing
10582 *) New options to smime application. -inform and -outform
10583 allow alternative formats for the S/MIME message including
10584 PEM and DER. The -content option allows the content to be
10585 specified separately. This should allow things like Netscape
10586 form signing output easier to verify.
10589 *) Fix the ASN1 encoding of tags using the 'long form'.
10592 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
10593 STRING types. These convert content octets to and from the
10594 underlying type. The actual tag and length octets are
10595 already assumed to have been read in and checked. These
10596 are needed because all other string types have virtually
10597 identical handling apart from the tag. By having versions
10598 of the ASN1 functions that just operate on content octets
10599 IMPLICIT tagging can be handled properly. It also allows
10600 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
10601 and ASN1_INTEGER are identical apart from the tag.
10604 *) Change the handling of OID objects as follows:
10606 - New object identifiers are inserted in objects.txt, following
10607 the syntax given in objects.README.
10608 - objects.pl is used to process obj_mac.num and create a new
10610 - obj_dat.pl is used to create a new obj_dat.h, using the data in
10613 This is currently kind of a hack, and the perl code in objects.pl
10614 isn't very elegant, but it works as I intended. The simplest way
10615 to check that it worked correctly is to look in obj_dat.h and
10616 check the array nid_objs and make sure the objects haven't moved
10617 around (this is important!). Additions are OK, as well as
10618 consistent name changes.
10621 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
10624 *) Addition of the command line parameter '-rand file' to 'openssl req'.
10625 The given file adds to whatever has already been seeded into the
10626 random pool through the RANDFILE configuration file option or
10627 environment variable, or the default random state file.
10630 *) mkstack.pl now sorts each macro group into lexical order.
10631 Previously the output order depended on the order the files
10632 appeared in the directory, resulting in needless rewriting
10636 *) Patches to make OpenSSL compile under Win32 again. Mostly
10637 work arounds for the VC++ problem that it treats func() as
10638 func(void). Also stripped out the parts of mkdef.pl that
10639 added extra typesafe functions: these no longer exist.
10642 *) Reorganisation of the stack code. The macros are now all
10643 collected in safestack.h . Each macro is defined in terms of
10644 a "stack macro" of the form SKM_<name>(type, a, b). The
10645 DEBUG_SAFESTACK is now handled in terms of function casts,
10646 this has the advantage of retaining type safety without the
10647 use of additional functions. If DEBUG_SAFESTACK is not defined
10648 then the non typesafe macros are used instead. Also modified the
10649 mkstack.pl script to handle the new form. Needs testing to see
10650 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
10651 the default if no major problems. Similar behaviour for ASN1_SET_OF
10652 and PKCS12_STACK_OF.
10655 *) When some versions of IIS use the 'NET' form of private key the
10656 key derivation algorithm is different. Normally MD5(password) is
10657 used as a 128 bit RC4 key. In the modified case
10658 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
10659 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
10660 as the old Netscape_RSA functions except they have an additional
10661 'sgckey' parameter which uses the modified algorithm. Also added
10662 an -sgckey command line option to the rsa utility. Thanks to
10663 Adrian Peck <bertie@ncipher.com> for posting details of the modified
10664 algorithm to openssl-dev.
10667 *) The evp_local.h macros were using 'c.##kname' which resulted in
10668 invalid expansion on some systems (SCO 5.0.5 for example).
10669 Corrected to 'c.kname'.
10670 [Phillip Porch <root@theporch.com>]
10672 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
10673 a STACK of email addresses from a certificate or request, these look
10674 in the subject name and the subject alternative name extensions and
10675 omit any duplicate addresses.
10678 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
10679 This makes DSA verification about 2 % faster.
10682 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
10683 (meaning that now 2^5 values will be precomputed, which is only 4 KB
10684 plus overhead for 1024 bit moduli).
10685 This makes exponentiations about 0.5 % faster for 1024 bit
10686 exponents (as measured by "openssl speed rsa2048").
10689 *) Rename memory handling macros to avoid conflicts with other
10691 Malloc => OPENSSL_malloc
10692 Malloc_locked => OPENSSL_malloc_locked
10693 Realloc => OPENSSL_realloc
10694 Free => OPENSSL_free
10697 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
10698 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
10701 *) CygWin32 support.
10702 [John Jarvie <jjarvie@newsguy.com>]
10704 *) The type-safe stack code has been rejigged. It is now only compiled
10705 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
10706 by default all type-specific stack functions are "#define"d back to
10707 standard stack functions. This results in more streamlined output
10708 but retains the type-safety checking possibilities of the original
10712 *) The STACK code has been cleaned up, and certain type declarations
10713 that didn't make a lot of sense have been brought in line. This has
10714 also involved a cleanup of sorts in safestack.h to more correctly
10715 map type-safe stack functions onto their plain stack counterparts.
10716 This work has also resulted in a variety of "const"ifications of
10717 lots of the code, especially "_cmp" operations which should normally
10718 be prototyped with "const" parameters anyway.
10721 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
10722 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
10723 (The PRNG state consists of two parts, the large pool 'state' and 'md',
10724 where all of 'md' is used each time the PRNG is used, but 'state'
10725 is used only indexed by a cyclic counter. As entropy may not be
10726 well distributed from the beginning, 'md' is important as a
10727 chaining variable. However, the output function chains only half
10728 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
10729 all of 'md', and seeding with STATE_SIZE dummy bytes will result
10730 in all of 'state' being rewritten, with the new values depending
10731 on virtually all of 'md'. This overcomes the 80 bit limitation.)
10734 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
10735 the handshake is continued after ssl_verify_cert_chain();
10736 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
10737 can lead to 'unexplainable' connection aborts later.
10738 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
10740 *) Major EVP API cipher revision.
10741 Add hooks for extra EVP features. This allows various cipher
10742 parameters to be set in the EVP interface. Support added for variable
10743 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
10744 setting of RC2 and RC5 parameters.
10746 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
10749 Remove lots of duplicated code from the EVP library. For example *every*
10750 cipher init() function handles the 'iv' in the same way according to the
10751 cipher mode. They also all do nothing if the 'key' parameter is NULL and
10752 for CFB and OFB modes they zero ctx->num.
10754 New functionality allows removal of S/MIME code RC2 hack.
10756 Most of the routines have the same form and so can be declared in terms
10759 By shifting this to the top level EVP_CipherInit() it can be removed from
10760 all individual ciphers. If the cipher wants to handle IVs or keys
10761 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
10764 Change lots of functions like EVP_EncryptUpdate() to now return a
10765 value: although software versions of the algorithms cannot fail
10766 any installed hardware versions can.
10769 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
10770 this option is set, tolerate broken clients that send the negotiated
10771 protocol version number instead of the requested protocol version
10775 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
10776 i.e. non-zero for export ciphersuites, zero otherwise.
10777 Previous versions had this flag inverted, inconsistent with
10778 rsa_tmp_cb (..._TMP_RSA_CB).
10779 [Bodo Moeller; problem reported by Amit Chopra]
10781 *) Add missing DSA library text string. Work around for some IIS
10782 key files with invalid SEQUENCE encoding.
10785 *) Add a document (doc/standards.txt) that list all kinds of standards
10786 and so on that are implemented in OpenSSL.
10789 *) Enhance c_rehash script. Old version would mishandle certificates
10790 with the same subject name hash and wouldn't handle CRLs at all.
10791 Added -fingerprint option to crl utility, to support new c_rehash
10795 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
10798 *) Fix for SSL server purpose checking. Server checking was
10799 rejecting certificates which had extended key usage present
10800 but no ssl client purpose.
10801 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
10803 *) Make PKCS#12 code work with no password. The PKCS#12 spec
10804 is a little unclear about how a blank password is handled.
10805 Since the password in encoded as a BMPString with terminating
10806 double NULL a zero length password would end up as just the
10807 double NULL. However no password at all is different and is
10808 handled differently in the PKCS#12 key generation code. NS
10809 treats a blank password as zero length. MSIE treats it as no
10810 password on export: but it will try both on import. We now do
10811 the same: PKCS12_parse() tries zero length and no password if
10812 the password is set to "" or NULL (NULL is now a valid password:
10813 it wasn't before) as does the pkcs12 application.
10816 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
10817 perror when PEM_read_bio_X509_REQ fails, the error message must
10818 be obtained from the error queue.
10821 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
10822 it in ERR_remove_state if appropriate, and change ERR_get_state
10823 accordingly to avoid race conditions (this is necessary because
10824 thread_hash is no longer constant once set).
10827 *) Bugfix for linux-elf makefile.one.
10830 *) RSA_get_default_method() will now cause a default
10831 RSA_METHOD to be chosen if one doesn't exist already.
10832 Previously this was only set during a call to RSA_new()
10833 or RSA_new_method(NULL) meaning it was possible for
10834 RSA_get_default_method() to return NULL.
10837 *) Added native name translation to the existing DSO code
10838 that will convert (if the flag to do so is set) filenames
10839 that are sufficiently small and have no path information
10840 into a canonical native form. Eg. "blah" converted to
10841 "libblah.so" or "blah.dll" etc.
10844 *) New function ERR_error_string_n(e, buf, len) which is like
10845 ERR_error_string(e, buf), but writes at most 'len' bytes
10846 including the 0 terminator. For ERR_error_string_n, 'buf'
10848 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
10850 *) CONF library reworked to become more general. A new CONF
10851 configuration file reader "class" is implemented as well as a
10852 new functions (NCONF_*, for "New CONF") to handle it. The now
10853 old CONF_* functions are still there, but are reimplemented to
10854 work in terms of the new functions. Also, a set of functions
10855 to handle the internal storage of the configuration data is
10856 provided to make it easier to write new configuration file
10857 reader "classes" (I can definitely see something reading a
10858 configuration file in XML format, for example), called _CONF_*,
10859 or "the configuration storage API"...
10861 The new configuration file reading functions are:
10863 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
10864 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
10866 NCONF_default, NCONF_WIN32
10868 NCONF_dump_fp, NCONF_dump_bio
10870 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
10871 NCONF_new creates a new CONF object. This works in the same way
10872 as other interfaces in OpenSSL, like the BIO interface.
10873 NCONF_dump_* dump the internal storage of the configuration file,
10874 which is useful for debugging. All other functions take the same
10875 arguments as the old CONF_* functions wth the exception of the
10876 first that must be a `CONF *' instead of a `LHASH *'.
10878 To make it easer to use the new classes with the old CONF_* functions,
10879 the function CONF_set_default_method is provided.
10882 *) Add '-tls1' option to 'openssl ciphers', which was already
10883 mentioned in the documentation but had not been implemented.
10884 (This option is not yet really useful because even the additional
10885 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
10888 *) Initial DSO code added into libcrypto for letting OpenSSL (and
10889 OpenSSL-based applications) load shared libraries and bind to
10890 them in a portable way.
10891 [Geoff Thorpe, with contributions from Richard Levitte]
10893 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
10895 *) Make sure _lrotl and _lrotr are only used with MSVC.
10897 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
10898 (the default implementation of RAND_status).
10900 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
10901 to '-clrext' (= clear extensions), as intended and documented.
10902 [Bodo Moeller; inconsistency pointed out by Michael Attili
10903 <attili@amaxo.com>]
10905 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
10906 was larger than the MD block size.
10907 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
10909 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
10910 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
10911 using the passed key: if the passed key was a private key the result
10912 of X509_print(), for example, would be to print out all the private key
10916 *) des_quad_cksum() byte order bug fix.
10917 [Ulf Möller, using the problem description in krb4-0.9.7, where
10918 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
10920 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
10922 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
10924 *) For easily testing in shell scripts whether some command
10925 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
10926 returns with exit code 0 iff no command of the given name is available.
10927 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
10928 the output goes to stdout and nothing is printed to stderr.
10929 Additional arguments are always ignored.
10931 Since for each cipher there is a command of the same name,
10932 the 'no-cipher' compilation switches can be tested this way.
10934 ('openssl no-XXX' is not able to detect pseudo-commands such
10935 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
10938 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
10941 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
10942 is set; it will be thrown away anyway because each handshake creates
10944 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
10945 to parameters -- in previous versions (since OpenSSL 0.9.3) the
10946 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
10947 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
10950 *) New s_client option -ign_eof: EOF at stdin is ignored, and
10951 'Q' and 'R' lose their special meanings (quit/renegotiate).
10952 This is part of what -quiet does; unlike -quiet, -ign_eof
10953 does not suppress any output.
10956 *) Add compatibility options to the purpose and trust code. The
10957 purpose X509_PURPOSE_ANY is "any purpose" which automatically
10958 accepts a certificate or CA, this was the previous behaviour,
10959 with all the associated security issues.
10961 X509_TRUST_COMPAT is the old trust behaviour: only and
10962 automatically trust self signed roots in certificate store. A
10963 new trust setting X509_TRUST_DEFAULT is used to specify that
10964 a purpose has no associated trust setting and it should instead
10965 use the value in the default purpose.
10968 *) Fix the PKCS#8 DSA private key code so it decodes keys again
10969 and fix a memory leak.
10972 *) In util/mkerr.pl (which implements 'make errors'), preserve
10973 reason strings from the previous version of the .c file, as
10974 the default to have only downcase letters (and digits) in
10975 automatically generated reasons codes is not always appropriate.
10978 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
10979 using strerror. Previously, ERR_reason_error_string() returned
10980 library names as reason strings for SYSerr; but SYSerr is a special
10981 case where small numbers are errno values, not library numbers.
10984 *) Add '-dsaparam' option to 'openssl dhparam' application. This
10985 converts DSA parameters into DH parameters. (When creating parameters,
10986 DSA_generate_parameters is used.)
10989 *) Include 'length' (recommended exponent length) in C code generated
10990 by 'openssl dhparam -C'.
10993 *) The second argument to set_label in perlasm was already being used
10994 so couldn't be used as a "file scope" flag. Moved to third argument
10998 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
10999 instead of RAND_bytes for encryption IVs and salts.
11002 *) Include RAND_status() into RAND_METHOD instead of implementing
11003 it only for md_rand.c Otherwise replacing the PRNG by calling
11004 RAND_set_rand_method would be impossible.
11007 *) Don't let DSA_generate_key() enter an infinite loop if the random
11008 number generation fails.
11011 *) New 'rand' application for creating pseudo-random output.
11014 *) Added configuration support for Linux/IA64
11015 [Rolf Haberrecker <rolf@suse.de>]
11017 *) Assembler module support for Mingw32.
11020 *) Shared library support for HPUX (in shlib/).
11021 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
11023 *) Shared library support for Solaris gcc.
11024 [Lutz Behnke <behnke@trustcenter.de>]
11026 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
11028 *) PKCS7_encrypt() was adding text MIME headers twice because they
11029 were added manually and by SMIME_crlf_copy().
11032 *) In bntest.c don't call BN_rand with zero bits argument.
11033 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
11035 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
11036 case was implemented. This caused BN_div_recp() to fail occasionally.
11039 *) Add an optional second argument to the set_label() in the perl
11040 assembly language builder. If this argument exists and is set
11041 to 1 it signals that the assembler should use a symbol whose
11042 scope is the entire file, not just the current function. This
11043 is needed with MASM which uses the format label:: for this scope.
11044 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
11046 *) Change the ASN1 types so they are typedefs by default. Before
11047 almost all types were #define'd to ASN1_STRING which was causing
11048 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
11052 *) Change names of new functions to the new get1/get0 naming
11053 convention: After 'get1', the caller owns a reference count
11054 and has to call ..._free; 'get0' returns a pointer to some
11055 data structure without incrementing reference counters.
11056 (Some of the existing 'get' functions increment a reference
11057 counter, some don't.)
11058 Similarly, 'set1' and 'add1' functions increase reference
11059 counters or duplicate objects.
11062 *) Allow for the possibility of temp RSA key generation failure:
11063 the code used to assume it always worked and crashed on failure.
11066 *) Fix potential buffer overrun problem in BIO_printf().
11067 [Ulf Möller, using public domain code by Patrick Powell; problem
11068 pointed out by David Sacerdote <das33@cornell.edu>]
11070 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
11071 RAND_egd() and RAND_status(). In the command line application,
11072 the EGD socket can be specified like a seed file using RANDFILE
11076 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
11077 Some CAs (e.g. Verisign) distribute certificates in this form.
11080 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
11081 list to exclude them. This means that no special compilation option
11082 is needed to use anonymous DH: it just needs to be included in the
11086 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
11087 EVP_MD_type. The old functionality is available in a new macro called
11088 EVP_MD_md(). Change code that uses it and update docs.
11091 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
11092 where the 'void *' argument is replaced by a function pointer argument.
11093 Previously 'void *' was abused to point to functions, which works on
11094 many platforms, but is not correct. As these functions are usually
11095 called by macros defined in OpenSSL header files, most source code
11096 should work without changes.
11099 *) <openssl/opensslconf.h> (which is created by Configure) now contains
11100 sections with information on -D... compiler switches used for
11101 compiling the library so that applications can see them. To enable
11102 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
11103 must be defined. E.g.,
11104 #define OPENSSL_ALGORITHM_DEFINES
11105 #include <openssl/opensslconf.h>
11106 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
11107 [Richard Levitte, Ulf and Bodo Möller]
11109 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
11113 *) Change the 'other' type in certificate aux info to a STACK_OF
11114 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
11115 the required ASN1 format: arbitrary types determined by an OID.
11118 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
11119 argument to 'req'. This is not because the function is newer or
11120 better than others it just uses the work 'NEW' in the certificate
11121 request header lines. Some software needs this.
11124 *) Reorganise password command line arguments: now passwords can be
11125 obtained from various sources. Delete the PEM_cb function and make
11126 it the default behaviour: i.e. if the callback is NULL and the
11127 usrdata argument is not NULL interpret it as a null terminated pass
11128 phrase. If usrdata and the callback are NULL then the pass phrase
11129 is prompted for as usual.
11132 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
11133 the support is automatically enabled. The resulting binaries will
11134 autodetect the card and use it if present.
11135 [Ben Laurie and Compaq Inc.]
11137 *) Work around for Netscape hang bug. This sends certificate request
11138 and server done in one record. Since this is perfectly legal in the
11139 SSL/TLS protocol it isn't a "bug" option and is on by default. See
11140 the bugs/SSLv3 entry for more info.
11143 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
11146 *) Add -rand argument to smime and pkcs12 applications and read/write
11150 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
11153 *) Add command line password options to the remaining applications.
11156 *) Bug fix for BN_div_recp() for numerators with an even number of
11160 *) More tests in bntest.c, and changed test_bn output.
11163 *) ./config recognizes MacOS X now.
11166 *) Bug fix for BN_div() when the first words of num and divisor are
11167 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
11170 *) Add support for various broken PKCS#8 formats, and command line
11171 options to produce them.
11174 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
11175 get temporary BIGNUMs from a BN_CTX.
11178 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
11182 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
11183 include a #define from the old name to the new. The original intent
11184 was that statically linked binaries could for example just call
11185 SSLeay_add_all_ciphers() to just add ciphers to the table and not
11186 link with digests. This never worked because SSLeay_add_all_digests()
11187 and SSLeay_add_all_ciphers() were in the same source file so calling
11188 one would link with the other. They are now in separate source files.
11191 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
11194 *) Use a less unusual form of the Miller-Rabin primality test (it used
11195 a binary algorithm for exponentiation integrated into the Miller-Rabin
11196 loop, our standard modexp algorithms are faster).
11199 *) Support for the EBCDIC character set completed.
11200 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
11202 *) Source code cleanups: use const where appropriate, eliminate casts,
11203 use void * instead of char * in lhash.
11206 *) Bugfix: ssl3_send_server_key_exchange was not restartable
11207 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
11208 this the server could overwrite ephemeral keys that the client
11212 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
11213 using 50 iterations of the Rabin-Miller test.
11215 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
11216 iterations of the Rabin-Miller test as required by the appendix
11217 to FIPS PUB 186[-1]) instead of DSA_is_prime.
11218 As BN_is_prime_fasttest includes trial division, DSA parameter
11219 generation becomes much faster.
11221 This implies a change for the callback functions in DSA_is_prime
11222 and DSA_generate_parameters: The callback function is called once
11223 for each positive witness in the Rabin-Miller test, not just
11224 occasionally in the inner loop; and the parameters to the
11225 callback function now provide an iteration count for the outer
11226 loop rather than for the current invocation of the inner loop.
11227 DSA_generate_parameters additionally can call the callback
11228 function with an 'iteration count' of -1, meaning that a
11229 candidate has passed the trial division test (when q is generated
11230 from an application-provided seed, trial division is skipped).
11233 *) New function BN_is_prime_fasttest that optionally does trial
11234 division before starting the Rabin-Miller test and has
11235 an additional BN_CTX * argument (whereas BN_is_prime always
11236 has to allocate at least one BN_CTX).
11237 'callback(1, -1, cb_arg)' is called when a number has passed the
11238 trial division stage.
11241 *) Fix for bug in CRL encoding. The validity dates weren't being handled
11245 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
11248 *) New function BN_pseudo_rand().
11251 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
11252 bignum version of BN_from_montgomery() with the working code from
11253 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
11257 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
11258 made it impossible to use the same SSL_SESSION data structure in
11259 SSL2 clients in multiple threads.
11262 *) The return value of RAND_load_file() no longer counts bytes obtained
11263 by stat(). RAND_load_file(..., -1) is new and uses the complete file
11264 to seed the PRNG (previously an explicit byte count was required).
11265 [Ulf Möller, Bodo Möller]
11267 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
11268 used (char *) instead of (void *) and had casts all over the place.
11271 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
11274 *) Retain source code compatibility for BN_prime_checks macro:
11275 BN_is_prime(..., BN_prime_checks, ...) now uses
11276 BN_prime_checks_for_size to determine the appropriate number of
11277 Rabin-Miller iterations.
11280 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
11281 DH_CHECK_P_NOT_SAFE_PRIME.
11282 (Check if this is true? OpenPGP calls them "strong".)
11285 *) Merge the functionality of "dh" and "gendh" programs into a new program
11286 "dhparam". The old programs are retained for now but will handle DH keys
11287 (instead of parameters) in future.
11290 *) Make the ciphers, s_server and s_client programs check the return values
11291 when a new cipher list is set.
11294 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
11295 ciphers. Before when the 56bit ciphers were enabled the sorting was
11298 The syntax for the cipher sorting has been extended to support sorting by
11299 cipher-strength (using the strength_bits hard coded in the tables).
11300 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
11302 Fix a bug in the cipher-command parser: when supplying a cipher command
11303 string with an "undefined" symbol (neither command nor alphanumeric
11304 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
11305 an error is flagged.
11307 Due to the strength-sorting extension, the code of the
11308 ssl_create_cipher_list() function was completely rearranged. I hope that
11309 the readability was also increased :-)
11310 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
11312 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
11313 for the first serial number and places 2 in the serial number file. This
11314 avoids problems when the root CA is created with serial number zero and
11315 the first user certificate has the same issuer name and serial number
11319 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
11320 the new code. Add documentation for this stuff.
11323 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
11324 X509_*() to X509at_*() on the grounds that they don't handle X509
11325 structures and behave in an analogous way to the X509v3 functions:
11326 they shouldn't be called directly but wrapper functions should be used
11329 So we also now have some wrapper functions that call the X509at functions
11330 when passed certificate requests. (TO DO: similar things can be done with
11331 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
11332 things. Some of these need some d2i or i2d and print functionality
11333 because they handle more complex structures.)
11336 *) Add missing #ifndefs that caused missing symbols when building libssl
11337 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
11338 NO_RSA in ssl/s2*.c.
11339 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
11341 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
11342 has a return value which indicates the quality of the random data
11343 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
11344 error queue. New function RAND_pseudo_bytes() generates output that is
11345 guaranteed to be unique but not unpredictable. RAND_add is like
11346 RAND_seed, but takes an extra argument for an entropy estimate
11347 (RAND_seed always assumes full entropy).
11350 *) Do more iterations of Rabin-Miller probable prime test (specifically,
11351 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
11352 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
11353 in crypto/bn/bn_prime.c for the complete table). This guarantees a
11354 false-positive rate of at most 2^-80 for random input.
11357 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
11360 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
11361 in the 0.9.5 release), this returns the chain
11362 from an X509_CTX structure with a dup of the stack and all
11363 the X509 reference counts upped: so the stack will exist
11364 after X509_CTX_cleanup() has been called. Modify pkcs12.c
11367 Also make SSL_SESSION_print() print out the verify return
11371 *) Add manpage for the pkcs12 command. Also change the default
11372 behaviour so MAC iteration counts are used unless the new
11373 -nomaciter option is used. This improves file security and
11374 only older versions of MSIE (4.0 for example) need it.
11377 *) Honor the no-xxx Configure options when creating .DEF files.
11380 *) Add PKCS#10 attributes to field table: challengePassword,
11381 unstructuredName and unstructuredAddress. These are taken from
11382 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
11383 international characters are used.
11385 More changes to X509_ATTRIBUTE code: allow the setting of types
11386 based on strings. Remove the 'loc' parameter when adding
11387 attributes because these will be a SET OF encoding which is sorted
11391 *) Initial changes to the 'req' utility to allow request generation
11392 automation. This will allow an application to just generate a template
11393 file containing all the field values and have req construct the
11396 Initial support for X509_ATTRIBUTE handling. Stacks of these are
11397 used all over the place including certificate requests and PKCS#7
11398 structures. They are currently handled manually where necessary with
11399 some primitive wrappers for PKCS#7. The new functions behave in a
11400 manner analogous to the X509 extension functions: they allow
11401 attributes to be looked up by NID and added.
11403 Later something similar to the X509V3 code would be desirable to
11404 automatically handle the encoding, decoding and printing of the
11405 more complex types. The string types like challengePassword can
11406 be handled by the string table functions.
11408 Also modified the multi byte string table handling. Now there is
11409 a 'global mask' which masks out certain types. The table itself
11410 can use the flag STABLE_NO_MASK to ignore the mask setting: this
11411 is useful when for example there is only one permissible type
11412 (as in countryName) and using the mask might result in no valid
11416 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
11417 SSL_get_peer_finished to allow applications to obtain the latest
11418 Finished messages sent to the peer or expected from the peer,
11419 respectively. (SSL_get_peer_finished is usually the Finished message
11420 actually received from the peer, otherwise the protocol will be aborted.)
11422 As the Finished message are message digests of the complete handshake
11423 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
11424 be used for external authentication procedures when the authentication
11425 provided by SSL/TLS is not desired or is not enough.
11428 *) Enhanced support for Alpha Linux is added. Now ./config checks if
11429 the host supports BWX extension and if Compaq C is present on the
11430 $PATH. Just exploiting of the BWX extension results in 20-30%
11431 performance kick for some algorithms, e.g. DES and RC4 to mention
11432 a couple. Compaq C in turn generates ~20% faster code for MD5 and
11436 *) Add support for MS "fast SGC". This is arguably a violation of the
11437 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
11438 weak crypto and after checking the certificate is SGC a second one
11439 with strong crypto. MS SGC stops the first handshake after receiving
11440 the server certificate message and sends a second client hello. Since
11441 a server will typically do all the time consuming operations before
11442 expecting any further messages from the client (server key exchange
11443 is the most expensive) there is little difference between the two.
11445 To get OpenSSL to support MS SGC we have to permit a second client
11446 hello message after we have sent server done. In addition we have to
11447 reset the MAC if we do get this second client hello.
11450 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
11451 if a DER encoded private key is RSA or DSA traditional format. Changed
11452 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
11453 format DER encoded private key. Newer code should use PKCS#8 format which
11454 has the key type encoded in the ASN1 structure. Added DER private key
11455 support to pkcs8 application.
11458 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
11459 ciphersuites has been selected (as required by the SSL 3/TLS 1
11460 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
11461 is set, we interpret this as a request to violate the specification
11462 (the worst that can happen is a handshake failure, and 'correct'
11463 behaviour would result in a handshake failure anyway).
11466 *) In SSL_CTX_add_session, take into account that there might be multiple
11467 SSL_SESSION structures with the same session ID (e.g. when two threads
11468 concurrently obtain them from an external cache).
11469 The internal cache can handle only one SSL_SESSION with a given ID,
11470 so if there's a conflict, we now throw out the old one to achieve
11474 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
11475 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
11476 some routines that use cipher OIDs: some ciphers do not have OIDs
11477 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
11481 *) Simplify the trust setting structure and code. Now we just have
11482 two sequences of OIDs for trusted and rejected settings. These will
11483 typically have values the same as the extended key usage extension
11484 and any application specific purposes.
11486 The trust checking code now has a default behaviour: it will just
11487 check for an object with the same NID as the passed id. Functions can
11488 be provided to override either the default behaviour or the behaviour
11489 for a given id. SSL client, server and email already have functions
11490 in place for compatibility: they check the NID and also return "trusted"
11491 if the certificate is self signed.
11494 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
11495 traditional format into an EVP_PKEY structure.
11498 *) Add a password callback function PEM_cb() which either prompts for
11499 a password if usr_data is NULL or otherwise assumes it is a null
11500 terminated password. Allow passwords to be passed on command line
11501 environment or config files in a few more utilities.
11504 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
11505 keys. Add some short names for PKCS#8 PBE algorithms and allow them
11506 to be specified on the command line for the pkcs8 and pkcs12 utilities.
11507 Update documentation.
11510 *) Support for ASN1 "NULL" type. This could be handled before by using
11511 ASN1_TYPE but there wasn't any function that would try to read a NULL
11512 and produce an error if it couldn't. For compatibility we also have
11513 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
11514 don't allocate anything because they don't need to.
11517 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
11519 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
11521 *) Rebuild of the memory allocation routines used by OpenSSL code and
11522 possibly others as well. The purpose is to make an interface that
11523 provide hooks so anyone can build a separate set of allocation and
11524 deallocation routines to be used by OpenSSL, for example memory
11525 pool implementations, or something else, which was previously hard
11526 since Malloc(), Realloc() and Free() were defined as macros having
11527 the values malloc, realloc and free, respectively (except for Win32
11528 compilations). The same is provided for memory debugging code.
11529 OpenSSL already comes with functionality to find memory leaks, but
11530 this gives people a chance to debug other memory problems.
11532 With these changes, a new set of functions and macros have appeared:
11534 CRYPTO_set_mem_debug_functions() [F]
11535 CRYPTO_get_mem_debug_functions() [F]
11536 CRYPTO_dbg_set_options() [F]
11537 CRYPTO_dbg_get_options() [F]
11538 CRYPTO_malloc_debug_init() [M]
11540 The memory debug functions are NULL by default, unless the library
11541 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
11542 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
11543 gives the standard debugging functions that come with OpenSSL) or
11544 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
11545 provided by the library user) must be used. When the standard
11546 debugging functions are used, CRYPTO_dbg_set_options can be used to
11547 request additional information:
11548 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
11549 the CRYPTO_MDEBUG_xxx macro when compiling the library.
11551 Also, things like CRYPTO_set_mem_functions will always give the
11552 expected result (the new set of functions is used for allocation
11553 and deallocation) at all times, regardless of platform and compiler
11556 To finish it up, some functions that were never use in any other
11557 way than through macros have a new API and new semantic:
11559 CRYPTO_dbg_malloc()
11560 CRYPTO_dbg_realloc()
11563 All macros of value have retained their old syntax.
11564 [Richard Levitte and Bodo Moeller]
11566 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
11567 ordering of SMIMECapabilities wasn't in "strength order" and there
11568 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
11572 *) Some ASN1 types with illegal zero length encoding (INTEGER,
11573 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
11574 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
11576 *) Merge in my S/MIME library for OpenSSL. This provides a simple
11577 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
11578 functionality to handle multipart/signed properly) and a utility
11579 called 'smime' to call all this stuff. This is based on code I
11580 originally wrote for Celo who have kindly allowed it to be
11581 included in OpenSSL.
11584 *) Add variants des_set_key_checked and des_set_key_unchecked of
11585 des_set_key (aka des_key_sched). Global variable des_check_key
11586 decides which of these is called by des_set_key; this way
11587 des_check_key behaves as it always did, but applications and
11588 the library itself, which was buggy for des_check_key == 1,
11589 have a cleaner way to pick the version they need.
11592 *) New function PKCS12_newpass() which changes the password of a
11596 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
11597 dynamic mix. In both cases the ids can be used as an index into the
11598 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
11599 functions so they accept a list of the field values and the
11600 application doesn't need to directly manipulate the X509_TRUST
11604 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
11608 *) Modify the way the V3 extension code looks up extensions. This now
11609 works in a similar way to the object code: we have some "standard"
11610 extensions in a static table which is searched with OBJ_bsearch()
11611 and the application can add dynamic ones if needed. The file
11612 crypto/x509v3/ext_dat.h now has the info: this file needs to be
11613 updated whenever a new extension is added to the core code and kept
11614 in ext_nid order. There is a simple program 'tabtest.c' which checks
11615 this. New extensions are not added too often so this file can readily
11616 be maintained manually.
11618 There are two big advantages in doing things this way. The extensions
11619 can be looked up immediately and no longer need to be "added" using
11620 X509V3_add_standard_extensions(): this function now does nothing.
11621 [Side note: I get *lots* of email saying the extension code doesn't
11622 work because people forget to call this function]
11623 Also no dynamic allocation is done unless new extensions are added:
11624 so if we don't add custom extensions there is no need to call
11625 X509V3_EXT_cleanup().
11628 *) Modify enc utility's salting as follows: make salting the default. Add a
11629 magic header, so unsalted files fail gracefully instead of just decrypting
11630 to garbage. This is because not salting is a big security hole, so people
11631 should be discouraged from doing it.
11634 *) Fixes and enhancements to the 'x509' utility. It allowed a message
11635 digest to be passed on the command line but it only used this
11636 parameter when signing a certificate. Modified so all relevant
11637 operations are affected by the digest parameter including the
11638 -fingerprint and -x509toreq options. Also -x509toreq choked if a
11639 DSA key was used because it didn't fix the digest.
11642 *) Initial certificate chain verify code. Currently tests the untrusted
11643 certificates for consistency with the verify purpose (which is set
11644 when the X509_STORE_CTX structure is set up) and checks the pathlength.
11646 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
11647 this is because it will reject chains with invalid extensions whereas
11648 every previous version of OpenSSL and SSLeay made no checks at all.
11650 Trust code: checks the root CA for the relevant trust settings. Trust
11651 settings have an initial value consistent with the verify purpose: e.g.
11652 if the verify purpose is for SSL client use it expects the CA to be
11653 trusted for SSL client use. However the default value can be changed to
11654 permit custom trust settings: one example of this would be to only trust
11655 certificates from a specific "secure" set of CAs.
11657 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
11658 which should be used for version portability: especially since the
11659 verify structure is likely to change more often now.
11661 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
11662 to set them. If not set then assume SSL clients will verify SSL servers
11665 Two new options to the verify program: -untrusted allows a set of
11666 untrusted certificates to be passed in and -purpose which sets the
11667 intended purpose of the certificate. If a purpose is set then the
11668 new chain verify code is used to check extension consistency.
11671 *) Support for the authority information access extension.
11674 *) Modify RSA and DSA PEM read routines to transparently handle
11675 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
11676 public keys in a format compatible with certificate
11677 SubjectPublicKeyInfo structures. Unfortunately there were already
11678 functions called *_PublicKey_* which used various odd formats so
11679 these are retained for compatibility: however the DSA variants were
11680 never in a public release so they have been deleted. Changed dsa/rsa
11681 utilities to handle the new format: note no releases ever handled public
11682 keys so we should be OK.
11684 The primary motivation for this change is to avoid the same fiasco
11685 that dogs private keys: there are several incompatible private key
11686 formats some of which are standard and some OpenSSL specific and
11687 require various evil hacks to allow partial transparent handling and
11688 even then it doesn't work with DER formats. Given the option anything
11689 other than PKCS#8 should be dumped: but the other formats have to
11690 stay in the name of compatibility.
11692 With public keys and the benefit of hindsight one standard format
11693 is used which works with EVP_PKEY, RSA or DSA structures: though
11694 it clearly returns an error if you try to read the wrong kind of key.
11696 Added a -pubkey option to the 'x509' utility to output the public key.
11697 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
11698 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
11699 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
11700 that do the same as the EVP_PKEY_assign_*() except they up the
11701 reference count of the added key (they don't "swallow" the
11705 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
11706 CRLs would fail if the file contained no certificates or no CRLs:
11707 added a new function to read in both types and return the number
11708 read: this means that if none are read it will be an error. The
11709 DER versions of the certificate and CRL reader would always fail
11710 because it isn't possible to mix certificates and CRLs in DER format
11711 without choking one or the other routine. Changed this to just read
11712 a certificate: this is the best we can do. Also modified the code
11713 in apps/verify.c to take notice of return codes: it was previously
11714 attempting to read in certificates from NULL pointers and ignoring
11715 any errors: this is one reason why the cert and CRL reader seemed
11716 to work. It doesn't check return codes from the default certificate
11717 routines: these may well fail if the certificates aren't installed.
11720 *) Code to support otherName option in GeneralName.
11723 *) First update to verify code. Change the verify utility
11724 so it warns if it is passed a self signed certificate:
11725 for consistency with the normal behaviour. X509_verify
11726 has been modified to it will now verify a self signed
11727 certificate if *exactly* the same certificate appears
11728 in the store: it was previously impossible to trust a
11729 single self signed certificate. This means that:
11730 openssl verify ss.pem
11731 now gives a warning about a self signed certificate but
11732 openssl verify -CAfile ss.pem ss.pem
11736 *) For servers, store verify_result in SSL_SESSION data structure
11737 (and add it to external session representation).
11738 This is needed when client certificate verifications fails,
11739 but an application-provided verification callback (set by
11740 SSL_CTX_set_cert_verify_callback) allows accepting the session
11741 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
11742 but returns 1): When the session is reused, we have to set
11743 ssl->verify_result to the appropriate error code to avoid
11745 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
11747 *) Fix a bug in the new PKCS#7 code: it didn't consider the
11748 case in PKCS7_dataInit() where the signed PKCS7 structure
11749 didn't contain any existing data because it was being created.
11750 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
11752 *) Add a salt to the key derivation routines in enc.c. This
11753 forms the first 8 bytes of the encrypted file. Also add a
11754 -S option to allow a salt to be input on the command line.
11757 *) New function X509_cmp(). Oddly enough there wasn't a function
11758 to compare two certificates. We do this by working out the SHA1
11759 hash and comparing that. X509_cmp() will be needed by the trust
11763 *) SSL_get1_session() is like SSL_get_session(), but increments
11764 the reference count in the SSL_SESSION returned.
11765 [Geoff Thorpe <geoff@eu.c2.net>]
11767 *) Fix for 'req': it was adding a null to request attributes.
11768 Also change the X509_LOOKUP and X509_INFO code to handle
11769 certificate auxiliary information.
11772 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
11776 *) Add the possibility to add extra information to the memory leak
11777 detecting output, to form tracebacks, showing from where each
11778 allocation was originated: CRYPTO_push_info("constant string") adds
11779 the string plus current file name and line number to a per-thread
11780 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
11781 is like calling CYRPTO_pop_info() until the stack is empty.
11782 Also updated memory leak detection code to be multi-thread-safe.
11785 *) Add options -text and -noout to pkcs7 utility and delete the
11786 encryption options which never did anything. Update docs.
11789 *) Add options to some of the utilities to allow the pass phrase
11790 to be included on either the command line (not recommended on
11791 OSes like Unix) or read from the environment. Update the
11792 manpages and fix a few bugs.
11795 *) Add a few manpages for some of the openssl commands.
11798 *) Fix the -revoke option in ca. It was freeing up memory twice,
11799 leaking and not finding already revoked certificates.
11802 *) Extensive changes to support certificate auxiliary information.
11803 This involves the use of X509_CERT_AUX structure and X509_AUX
11804 functions. An X509_AUX function such as PEM_read_X509_AUX()
11805 can still read in a certificate file in the usual way but it
11806 will also read in any additional "auxiliary information". By
11807 doing things this way a fair degree of compatibility can be
11808 retained: existing certificates can have this information added
11809 using the new 'x509' options.
11811 Current auxiliary information includes an "alias" and some trust
11812 settings. The trust settings will ultimately be used in enhanced
11813 certificate chain verification routines: currently a certificate
11814 can only be trusted if it is self signed and then it is trusted
11818 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
11819 The problem was that one of the replacement routines had not been working
11820 since SSLeay releases. For now the offending routine has been replaced
11821 with non-optimised assembler. Even so, this now gives around 95%
11822 performance improvement for 1024 bit RSA signs.
11825 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
11826 handling. Most clients have the effective key size in bits equal to
11827 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
11828 A few however don't do this and instead use the size of the decrypted key
11829 to determine the RC2 key length and the AlgorithmIdentifier to determine
11830 the effective key length. In this case the effective key length can still
11831 be 40 bits but the key length can be 168 bits for example. This is fixed
11832 by manually forcing an RC2 key into the EVP_PKEY structure because the
11833 EVP code can't currently handle unusual RC2 key sizes: it always assumes
11834 the key length and effective key length are equal.
11837 *) Add a bunch of functions that should simplify the creation of
11838 X509_NAME structures. Now you should be able to do:
11839 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
11840 and have it automatically work out the correct field type and fill in
11841 the structures. The more adventurous can try:
11842 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
11843 and it will (hopefully) work out the correct multibyte encoding.
11846 *) Change the 'req' utility to use the new field handling and multibyte
11847 copy routines. Before the DN field creation was handled in an ad hoc
11848 way in req, ca, and x509 which was rather broken and didn't support
11849 BMPStrings or UTF8Strings. Since some software doesn't implement
11850 BMPStrings or UTF8Strings yet, they can be enabled using the config file
11851 using the dirstring_type option. See the new comment in the default
11852 openssl.cnf for more info.
11855 *) Make crypto/rand/md_rand.c more robust:
11856 - Assure unique random numbers after fork().
11857 - Make sure that concurrent threads access the global counter and
11858 md serializably so that we never lose entropy in them
11859 or use exactly the same state in multiple threads.
11860 Access to the large state is not always serializable because
11861 the additional locking could be a performance killer, and
11862 md should be large enough anyway.
11865 *) New file apps/app_rand.c with commonly needed functionality
11866 for handling the random seed file.
11868 Use the random seed file in some applications that previously did not:
11870 dsaparam -genkey (which also ignored its '-rand' option),
11873 x509 (when signing).
11874 Except on systems with /dev/urandom, it is crucial to have a random
11875 seed file at least for key creation, DSA signing, and for DH exchanges;
11876 for RSA signatures we could do without one.
11878 gendh and gendsa (unlike genrsa) used to read only the first byte
11879 of each file listed in the '-rand' option. The function as previously
11880 found in genrsa is now in app_rand.c and is used by all programs
11881 that support '-rand'.
11884 *) In RAND_write_file, use mode 0600 for creating files;
11885 don't just chmod when it may be too late.
11888 *) Report an error from X509_STORE_load_locations
11889 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
11892 *) New function ASN1_mbstring_copy() this copies a string in either
11893 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
11894 into an ASN1_STRING type. A mask of permissible types is passed
11895 and it chooses the "minimal" type to use or an error if not type
11899 *) Add function equivalents to the various macros in asn1.h. The old
11900 macros are retained with an M_ prefix. Code inside the library can
11901 use the M_ macros. External code (including the openssl utility)
11902 should *NOT* in order to be "shared library friendly".
11905 *) Add various functions that can check a certificate's extensions
11906 to see if it usable for various purposes such as SSL client,
11907 server or S/MIME and CAs of these types. This is currently
11908 VERY EXPERIMENTAL but will ultimately be used for certificate chain
11909 verification. Also added a -purpose flag to x509 utility to
11910 print out all the purposes.
11913 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
11917 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
11918 for, obtain and decode and extension and obtain its critical flag.
11919 This allows all the necessary extension code to be handled in a
11920 single function call.
11923 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
11924 platforms. See crypto/rc4/rc4_enc.c for further details.
11927 *) New -noout option to asn1parse. This causes no output to be produced
11928 its main use is when combined with -strparse and -out to extract data
11929 from a file (which may not be in ASN.1 format).
11932 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
11933 when producing the local key id.
11934 [Richard Levitte <levitte@stacken.kth.se>]
11936 *) New option -dhparam in s_server. This allows a DH parameter file to be
11937 stated explicitly. If it is not stated then it tries the first server
11938 certificate file. The previous behaviour hard coded the filename
11942 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
11943 a public key to be input or output. For example:
11944 openssl rsa -in key.pem -pubout -out pubkey.pem
11945 Also added necessary DSA public key functions to handle this.
11948 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
11949 in the message. This was handled by allowing
11950 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
11951 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
11953 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
11954 to the end of the strings whereas this didn't. This would cause problems
11955 if strings read with d2i_ASN1_bytes() were later modified.
11956 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
11958 *) Fix for base64 decode bug. When a base64 bio reads only one line of
11959 data and it contains EOF it will end up returning an error. This is
11960 caused by input 46 bytes long. The cause is due to the way base64
11961 BIOs find the start of base64 encoded data. They do this by trying a
11962 trial decode on each line until they find one that works. When they
11963 do a flag is set and it starts again knowing it can pass all the
11964 data directly through the decoder. Unfortunately it doesn't reset
11965 the context it uses. This means that if EOF is reached an attempt
11966 is made to pass two EOFs through the context and this causes the
11967 resulting error. This can also cause other problems as well. As is
11968 usual with these problems it takes *ages* to find and the fix is
11969 trivial: move one line.
11970 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
11972 *) Ugly workaround to get s_client and s_server working under Windows. The
11973 old code wouldn't work because it needed to select() on sockets and the
11974 tty (for keypresses and to see if data could be written). Win32 only
11975 supports select() on sockets so we select() with a 1s timeout on the
11976 sockets and then see if any characters are waiting to be read, if none
11977 are present then we retry, we also assume we can always write data to
11978 the tty. This isn't nice because the code then blocks until we've
11979 received a complete line of data and it is effectively polling the
11980 keyboard at 1s intervals: however it's quite a bit better than not
11981 working at all :-) A dedicated Windows application might handle this
11982 with an event loop for example.
11985 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
11986 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
11987 will be called when RSA_sign() and RSA_verify() are used. This is useful
11988 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
11989 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
11990 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
11991 This necessitated the support of an extra signature type NID_md5_sha1
11992 for SSL signatures and modifications to the SSL library to use it instead
11993 of calling RSA_public_decrypt() and RSA_private_encrypt().
11996 *) Add new -verify -CAfile and -CApath options to the crl program, these
11997 will lookup a CRL issuers certificate and verify the signature in a
11998 similar way to the verify program. Tidy up the crl program so it
11999 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
12000 less strict. It will now permit CRL extensions even if it is not
12001 a V2 CRL: this will allow it to tolerate some broken CRLs.
12004 *) Initialize all non-automatic variables each time one of the openssl
12005 sub-programs is started (this is necessary as they may be started
12006 multiple times from the "OpenSSL>" prompt).
12007 [Lennart Bang, Bodo Moeller]
12009 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
12010 removing all other RSA functionality (this is what NO_RSA does). This
12011 is so (for example) those in the US can disable those operations covered
12012 by the RSA patent while allowing storage and parsing of RSA keys and RSA
12016 *) Non-copying interface to BIO pairs.
12017 (still largely untested)
12020 *) New function ASN1_tag2str() to convert an ASN1 tag to a descriptive
12021 ASCII string. This was handled independently in various places before.
12024 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
12025 UTF8 strings a character at a time.
12028 *) Use client_version from client hello to select the protocol
12029 (s23_srvr.c) and for RSA client key exchange verification
12030 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
12033 *) Add various utility functions to handle SPKACs, these were previously
12034 handled by poking round in the structure internals. Added new function
12035 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
12036 print, verify and generate SPKACs. Based on an original idea from
12037 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
12040 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
12043 *) Allow the config file extension section to be overwritten on the
12044 command line. Based on an original idea from Massimiliano Pala
12045 <madwolf@comune.modena.it>. The new option is called -extensions
12046 and can be applied to ca, req and x509. Also -reqexts to override
12047 the request extensions in req and -crlexts to override the crl extensions
12051 *) Add new feature to the SPKAC handling in ca. Now you can include
12052 the same field multiple times by preceding it by "XXXX." for example:
12055 this is the same syntax as used in the req config file.
12058 *) Allow certificate extensions to be added to certificate requests. These
12059 are specified in a 'req_extensions' option of the req section of the
12060 config file. They can be printed out with the -text option to req but
12061 are otherwise ignored at present.
12064 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
12065 data read consists of only the final block it would not decrypted because
12066 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
12067 A misplaced 'break' also meant the decrypted final block might not be
12068 copied until the next read.
12071 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
12072 a few extra parameters to the DH structure: these will be useful if
12073 for example we want the value of 'q' or implement X9.42 DH.
12076 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
12077 provides hooks that allow the default DSA functions or functions on a
12078 "per key" basis to be replaced. This allows hardware acceleration and
12079 hardware key storage to be handled without major modification to the
12080 library. Also added low level modexp hooks and CRYPTO_EX structure and
12081 associated functions.
12084 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
12085 as "read only": it can't be written to and the buffer it points to will
12086 not be freed. Reading from a read only BIO is much more efficient than
12087 a normal memory BIO. This was added because there are several times when
12088 an area of memory needs to be read from a BIO. The previous method was
12089 to create a memory BIO and write the data to it, this results in two
12090 copies of the data and an O(n^2) reading algorithm. There is a new
12091 function BIO_new_mem_buf() which creates a read only memory BIO from
12092 an area of memory. Also modified the PKCS#7 routines to use read only
12096 *) Bugfix: ssl23_get_client_hello did not work properly when called in
12097 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
12098 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
12099 but a retry condition occurred while trying to read the rest.
12102 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
12103 NID_pkcs7_encrypted by default: this was wrong since this should almost
12104 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
12105 the encrypted data type: this is a more sensible place to put it and it
12106 allows the PKCS#12 code to be tidied up that duplicated this
12110 *) Changed obj_dat.pl script so it takes its input and output files on
12111 the command line. This should avoid shell escape redirection problems
12115 *) Initial support for certificate extension requests, these are included
12116 in things like Xenroll certificate requests. Included functions to allow
12117 extensions to be obtained and added.
12120 *) -crlf option to s_client and s_server for sending newlines as
12121 CRLF (as required by many protocols).
12124 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
12126 *) Install libRSAglue.a when OpenSSL is built with RSAref.
12127 [Ralf S. Engelschall]
12129 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
12130 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
12132 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
12136 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
12137 DH parameters/keys (q is lost during that conversion, but the resulting
12138 DH parameters contain its length).
12140 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
12141 much faster than DH_generate_parameters (which creates parameters
12142 where p = 2*q + 1), and also the smaller q makes DH computations
12143 much more efficient (160-bit exponentiation instead of 1024-bit
12144 exponentiation); so this provides a convenient way to support DHE
12145 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
12146 utter importance to use
12147 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12149 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
12150 when such DH parameters are used, because otherwise small subgroup
12151 attacks may become possible!
12154 *) Avoid memory leak in i2d_DHparams.
12157 *) Allow the -k option to be used more than once in the enc program:
12158 this allows the same encrypted message to be read by multiple recipients.
12161 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
12162 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
12163 it will always use the numerical form of the OID, even if it has a short
12167 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
12168 method only got called if p,q,dmp1,dmq1,iqmp components were present,
12169 otherwise bn_mod_exp was called. In the case of hardware keys for example
12170 no private key components need be present and it might store extra data
12171 in the RSA structure, which cannot be accessed from bn_mod_exp.
12172 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
12173 private key operations.
12176 *) Added support for SPARC Linux.
12179 *) pem_password_cb function type incompatibly changed from
12180 typedef int pem_password_cb(char *buf, int size, int rwflag);
12182 ....(char *buf, int size, int rwflag, void *userdata);
12183 so that applications can pass data to their callbacks:
12184 The PEM[_ASN1]_{read,write}... functions and macros now take an
12185 additional void * argument, which is just handed through whenever
12186 the password callback is called.
12187 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
12189 New function SSL_CTX_set_default_passwd_cb_userdata.
12191 Compatibility note: As many C implementations push function arguments
12192 onto the stack in reverse order, the new library version is likely to
12193 interoperate with programs that have been compiled with the old
12194 pem_password_cb definition (PEM_whatever takes some data that
12195 happens to be on the stack as its last argument, and the callback
12196 just ignores this garbage); but there is no guarantee whatsoever that
12199 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
12200 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
12201 problems not only on Windows, but also on some Unix platforms.
12202 To avoid problematic command lines, these definitions are now in an
12203 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
12204 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
12207 *) MIPS III/IV assembler module is reimplemented.
12210 *) More DES library cleanups: remove references to srand/rand and
12211 delete an unused file.
12214 *) Add support for the free Netwide assembler (NASM) under Win32,
12215 since not many people have MASM (ml) and it can be hard to obtain.
12216 This is currently experimental but it seems to work OK and pass all
12217 the tests. Check out INSTALL.W32 for info.
12220 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
12221 without temporary keys kept an extra copy of the server key,
12222 and connections with temporary keys did not free everything in case
12226 *) New function RSA_check_key and new openssl rsa option -check
12227 for verifying the consistency of RSA keys.
12228 [Ulf Moeller, Bodo Moeller]
12230 *) Various changes to make Win32 compile work:
12231 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
12232 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
12233 comparison" warnings.
12234 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
12237 *) Add a debugging option to PKCS#5 v2 key generation function: when
12238 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
12239 derived keys are printed to stderr.
12242 *) Copy the flags in ASN1_STRING_dup().
12243 [Roman E. Pavlov <pre@mo.msk.ru>]
12245 *) The x509 application mishandled signing requests containing DSA
12246 keys when the signing key was also DSA and the parameters didn't match.
12248 It was supposed to omit the parameters when they matched the signing key:
12249 the verifying software was then supposed to automatically use the CA's
12250 parameters if they were absent from the end user certificate.
12252 Omitting parameters is no longer recommended. The test was also
12253 the wrong way round! This was probably due to unusual behaviour in
12254 EVP_cmp_parameters() which returns 1 if the parameters match.
12255 This meant that parameters were omitted when they *didn't* match and
12256 the certificate was useless. Certificates signed with 'ca' didn't have
12258 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
12260 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
12261 The interface is as follows:
12262 Applications can use
12263 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
12264 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
12265 "off" is now the default.
12266 The library internally uses
12267 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
12268 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
12269 to disable memory-checking temporarily.
12271 Some inconsistent states that previously were possible (and were
12272 even the default) are now avoided.
12274 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
12275 with each memory chunk allocated; this is occasionally more helpful
12276 than just having a counter.
12278 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
12280 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
12284 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
12285 which largely parallels "options", but is for changing API behaviour,
12286 whereas "options" are about protocol behaviour.
12287 Initial "mode" flags are:
12289 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
12290 a single record has been written.
12291 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
12292 retries use the same buffer location.
12293 (But all of the contents must be
12297 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
12300 *) Fix problems with no-hmac etc.
12301 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
12303 *) New functions RSA_get_default_method(), RSA_set_method() and
12304 RSA_get_method(). These allows replacement of RSA_METHODs without having
12305 to mess around with the internals of an RSA structure.
12308 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
12309 Also really enable memory leak checks in openssl.c and in some
12311 [Chad C. Mulligan, Bodo Moeller]
12313 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
12314 up the length of negative integers. This has now been simplified to just
12315 store the length when it is first determined and use it later, rather
12316 than trying to keep track of where data is copied and updating it to
12318 [Steve Henson, reported by Brien Wheeler
12319 <bwheeler@authentica-security.com>]
12321 *) Add a new function PKCS7_signatureVerify. This allows the verification
12322 of a PKCS#7 signature but with the signing certificate passed to the
12323 function itself. This contrasts with PKCS7_dataVerify which assumes the
12324 certificate is present in the PKCS#7 structure. This isn't always the
12325 case: certificates can be omitted from a PKCS#7 structure and be
12326 distributed by "out of band" means (such as a certificate database).
12329 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
12330 function prototypes in pem.h, also change util/mkdef.pl to add the
12331 necessary function names.
12334 *) mk1mf.pl (used by Windows builds) did not properly read the
12335 options set by Configure in the top level Makefile, and Configure
12336 was not even able to write more than one option correctly.
12337 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
12340 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
12341 file to be loaded from a BIO or FILE pointer. The BIO version will
12342 for example allow memory BIOs to contain config info.
12345 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
12346 Whoever hopes to achieve shared-library compatibility across versions
12347 must use this, not the compile-time macro.
12348 (Exercise 0.9.4: Which is the minimum library version required by
12350 Note: All this applies only to multi-threaded programs, others don't
12354 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
12355 through a BIO pair triggered the default case, i.e.
12356 SSLerr(...,SSL_R_UNKNOWN_STATE).
12359 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
12360 can use the SSL library even if none of the specific BIOs is
12364 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
12365 for the encoded length.
12366 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
12368 *) Add initial documentation of the X509V3 functions.
12371 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
12372 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
12373 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
12374 secure PKCS#8 private key format with a high iteration count.
12377 *) Fix determination of Perl interpreter: A perl or perl5
12378 _directory_ in $PATH was also accepted as the interpreter.
12379 [Ralf S. Engelschall]
12381 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
12382 wrong with it but it was very old and did things like calling
12383 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
12384 unusual formatting.
12387 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
12388 to use the new extension code.
12391 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
12392 with macros. This should make it easier to change their form, add extra
12393 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
12397 *) Add to configuration table a new entry that can specify an alternative
12398 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
12399 according to Mark Crispin <MRC@Panda.COM>.
12403 *) DES CBC did not update the IV. Weird.
12406 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
12407 Changing the behaviour of the former might break existing programs --
12408 where IV updating is needed, des_ncbc_encrypt can be used.
12411 *) When bntest is run from "make test" it drives bc to check its
12412 calculations, as well as internally checking them. If an internal check
12413 fails, it needs to cause bc to give a non-zero result or make test carries
12414 on without noticing the failure. Fixed.
12417 *) DES library cleanups.
12420 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
12421 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
12422 ciphers. NOTE: although the key derivation function has been verified
12423 against some published test vectors it has not been extensively tested
12424 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
12428 *) Instead of "mkdir -p", which is not fully portable, use new
12429 Perl script "util/mkdir-p.pl".
12432 *) Rewrite the way password based encryption (PBE) is handled. It used to
12433 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
12434 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
12435 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
12436 the 'parameter' field of the AlgorithmIdentifier is passed to the
12437 underlying key generation function so it must do its own ASN1 parsing.
12438 This has also changed the EVP_PBE_CipherInit() function which now has a
12439 'parameter' argument instead of literal salt and iteration count values
12440 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
12443 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
12444 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
12445 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
12446 KEY" because this clashed with PKCS#8 unencrypted string. Since this
12447 value was just used as a "magic string" and not used directly its
12448 value doesn't matter.
12451 *) Introduce some semblance of const correctness to BN. Shame C doesn't
12455 *) "linux-sparc64" configuration (ultrapenguin).
12456 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
12457 "linux-sparc" configuration.
12458 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
12460 *) config now generates no-xxx options for missing ciphers.
12463 *) Support the EBCDIC character set (work in progress).
12464 File ebcdic.c not yet included because it has a different license.
12465 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12467 *) Support BS2000/OSD-POSIX.
12468 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
12470 *) Make callbacks for key generation use void * instead of char *.
12473 *) Make S/MIME samples compile (not yet tested).
12476 *) Additional typesafe stacks.
12479 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
12483 Changes between 0.9.3 and 0.9.3a [29 May 1999]
12485 *) New configuration variant "sco5-gcc".
12487 *) Updated some demos.
12488 [Sean O Riordain, Wade Scholine]
12490 *) Add missing BIO_free at exit of pkcs12 application.
12493 *) Fix memory leak in conf.c.
12496 *) Updates for Win32 to assembler version of MD5.
12499 *) Set #! path to perl in apps/der_chop to where we found it
12500 instead of using a fixed path.
12503 *) SHA library changes for irix64-mips4-cc.
12506 *) Improvements for VMS support.
12510 Changes between 0.9.2b and 0.9.3 [24 May 1999]
12512 *) Bignum library bug fix. IRIX 6 passes "make test" now!
12513 This also avoids the problems with SC4.2 and unpatched SC5.
12514 [Andy Polyakov <appro@fy.chalmers.se>]
12516 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
12517 These are required because of the typesafe stack would otherwise break
12518 existing code. If old code used a structure member which used to be STACK
12519 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
12520 sk_num or sk_value it would produce an error because the num, data members
12521 are not present in STACK_OF. Now it just produces a warning. sk_set
12522 replaces the old method of assigning a value to sk_value
12523 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
12524 that does this will no longer work (and should use sk_set instead) but
12525 this could be regarded as a "questionable" behaviour anyway.
12528 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
12529 correctly handle encrypted S/MIME data.
12532 *) Change type of various DES function arguments from des_cblock
12533 (which means, in function argument declarations, pointer to char)
12534 to des_cblock * (meaning pointer to array with 8 char elements),
12535 which allows the compiler to do more typechecking; it was like
12536 that back in SSLeay, but with lots of ugly casts.
12538 Introduce new type const_des_cblock.
12541 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
12542 problems: find RecipientInfo structure that matches recipient certificate
12543 and initialise the ASN1 structures properly based on passed cipher.
12546 *) Belatedly make the BN tests actually check the results.
12549 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
12550 to and from BNs: it was completely broken. New compilation option
12551 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
12552 key elements as negative integers.
12555 *) Reorganize and speed up MD5.
12556 [Andy Polyakov <appro@fy.chalmers.se>]
12559 [Richard Levitte <richard@levitte.org>]
12561 *) New option -out to asn1parse to allow the parsed structure to be
12562 output to a file. This is most useful when combined with the -strparse
12563 option to examine the output of things like OCTET STRINGS.
12566 *) Make SSL library a little more fool-proof by not requiring any longer
12567 that SSL_set_{accept,connect}_state be called before
12568 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
12569 in many applications because usually everything *appeared* to work as
12570 intended anyway -- now it really works as intended).
12573 *) Move openssl.cnf out of lib/.
12576 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
12577 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
12578 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
12579 [Ralf S. Engelschall]
12581 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
12582 handle PKCS#7 enveloped data properly.
12583 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
12585 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
12586 copying pointers. The cert_st handling is changed by this in
12587 various ways (and thus what used to be known as ctx->default_cert
12588 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
12589 any longer when s->cert does not give us what we need).
12590 ssl_cert_instantiate becomes obsolete by this change.
12591 As soon as we've got the new code right (possibly it already is?),
12592 we have solved a couple of bugs of the earlier code where s->cert
12593 was used as if it could not have been shared with other SSL structures.
12595 Note that using the SSL API in certain dirty ways now will result
12596 in different behaviour than observed with earlier library versions:
12597 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
12598 does not influence s as it used to.
12600 In order to clean up things more thoroughly, inside SSL_SESSION
12601 we don't use CERT any longer, but a new structure SESS_CERT
12602 that holds per-session data (if available); currently, this is
12603 the peer's certificate chain and, for clients, the server's certificate
12604 and temporary key. CERT holds only those values that can have
12605 meaningful defaults in an SSL_CTX.
12608 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
12609 from the internal representation. Various PKCS#7 fixes: remove some
12610 evil casts and set the enc_dig_alg field properly based on the signing
12614 *) Allow PKCS#12 password to be set from the command line or the
12615 environment. Let 'ca' get its config file name from the environment
12616 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
12620 *) Allow certificate policies extension to use an IA5STRING for the
12621 organization field. This is contrary to the PKIX definition but
12622 VeriSign uses it and IE5 only recognises this form. Document 'x509'
12626 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
12627 without disallowing inline assembler and the like for non-pedantic builds.
12630 *) Support Borland C++ builder.
12631 [Janez Jere <jj@void.si>, modified by Ulf Möller]
12633 *) Support Mingw32.
12636 *) SHA-1 cleanups and performance enhancements.
12637 [Andy Polyakov <appro@fy.chalmers.se>]
12639 *) Sparc v8plus assembler for the bignum library.
12640 [Andy Polyakov <appro@fy.chalmers.se>]
12642 *) Accept any -xxx and +xxx compiler options in Configure.
12645 *) Update HPUX configuration.
12648 *) Add missing sk_<type>_unshift() function to safestack.h
12649 [Ralf S. Engelschall]
12651 *) New function SSL_CTX_use_certificate_chain_file that sets the
12652 "extra_cert"s in addition to the certificate. (This makes sense
12653 only for "PEM" format files, as chains as a whole are not
12657 *) Support verify_depth from the SSL API.
12658 x509_vfy.c had what can be considered an off-by-one-error:
12659 Its depth (which was not part of the external interface)
12660 was actually counting the number of certificates in a chain;
12661 now it really counts the depth.
12664 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
12665 instead of X509err, which often resulted in confusing error
12666 messages since the error codes are not globally unique
12667 (e.g. an alleged error in ssl3_accept when a certificate
12668 didn't match the private key).
12670 *) New function SSL_CTX_set_session_id_context that allows to set a default
12671 value (so that you don't need SSL_set_session_id_context for each
12672 connection using the SSL_CTX).
12675 *) OAEP decoding bug fix.
12678 *) Support INSTALL_PREFIX for package builders, as proposed by
12682 *) New Configure options "threads" and "no-threads". For systems
12683 where the proper compiler options are known (currently Solaris
12684 and Linux), "threads" is the default.
12687 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
12690 *) Install various scripts to $(OPENSSLDIR)/misc, not to
12691 $(INSTALLTOP)/bin -- they shouldn't clutter directories
12692 such as /usr/local/bin.
12695 *) "make linux-shared" to build shared libraries.
12696 [Niels Poppe <niels@netbox.org>]
12698 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
12701 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
12702 extension adding in x509 utility.
12705 *) Remove NOPROTO sections and error code comments.
12708 *) Partial rewrite of the DEF file generator to now parse the ANSI
12712 *) New Configure options --prefix=DIR and --openssldir=DIR.
12715 *) Complete rewrite of the error code script(s). It is all now handled
12716 by one script at the top level which handles error code gathering,
12717 header rewriting and C source file generation. It should be much better
12718 than the old method: it now uses a modified version of Ulf's parser to
12719 read the ANSI prototypes in all header files (thus the old K&R definitions
12720 aren't needed for error creation any more) and do a better job of
12721 translating function codes into names. The old 'ASN1 error code imbedded
12722 in a comment' is no longer necessary and it doesn't use .err files which
12723 have now been deleted. Also the error code call doesn't have to appear all
12724 on one line (which resulted in some large lines...).
12727 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
12730 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
12731 0 (which usually indicates a closed connection), but continue reading.
12734 *) Fix some race conditions.
12737 *) Add support for CRL distribution points extension. Add Certificate
12738 Policies and CRL distribution points documentation.
12741 *) Move the autogenerated header file parts to crypto/opensslconf.h.
12744 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
12745 8 of keying material. Merlin has also confirmed interop with this fix
12746 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
12747 [Merlin Hughes <merlin@baltimore.ie>]
12749 *) Fix lots of warnings.
12750 [Richard Levitte <levitte@stacken.kth.se>]
12752 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
12753 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
12754 [Richard Levitte <levitte@stacken.kth.se>]
12756 *) Fix problems with sizeof(long) == 8.
12757 [Andy Polyakov <appro@fy.chalmers.se>]
12759 *) Change functions to ANSI C.
12762 *) Fix typos in error codes.
12763 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
12765 *) Remove defunct assembler files from Configure.
12768 *) SPARC v8 assembler BIGNUM implementation.
12769 [Andy Polyakov <appro@fy.chalmers.se>]
12771 *) Support for Certificate Policies extension: both print and set.
12772 Various additions to support the r2i method this uses.
12775 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
12776 return a const string when you are expecting an allocated buffer.
12779 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
12780 types DirectoryString and DisplayText.
12783 *) Add code to allow r2i extensions to access the configuration database,
12784 add an LHASH database driver and add several ctx helper functions.
12787 *) Fix an evil bug in bn_expand2() which caused various BN functions to
12788 fail when they extended the size of a BIGNUM.
12791 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
12792 support typesafe stack.
12795 *) Fix typo in SSL_[gs]et_options().
12796 [Nils Frostberg <nils@medcom.se>]
12798 *) Delete various functions and files that belonged to the (now obsolete)
12799 old X509V3 handling code.
12802 *) New Configure option "rsaref".
12805 *) Don't auto-generate pem.h.
12808 *) Introduce type-safe ASN.1 SETs.
12811 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
12812 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
12814 *) Introduce type-safe STACKs. This will almost certainly break lots of code
12815 that links with OpenSSL (well at least cause lots of warnings), but fear
12816 not: the conversion is trivial, and it eliminates loads of evil casts. A
12817 few STACKed things have been converted already. Feel free to convert more.
12818 In the fullness of time, I'll do away with the STACK type altogether.
12821 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
12822 specified in <certfile> by updating the entry in the index.txt file.
12823 This way one no longer has to edit the index.txt file manually for
12824 revoking a certificate. The -revoke option does the gory details now.
12825 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
12827 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
12828 `-text' option at all and this way the `-noout -text' combination was
12829 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
12830 [Ralf S. Engelschall]
12832 *) Make sure a corresponding plain text error message exists for the
12833 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
12834 verify callback function determined that a certificate was revoked.
12835 [Ralf S. Engelschall]
12837 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
12838 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
12839 all available ciphers including rc5, which was forgotten until now.
12840 In order to let the testing shell script know which algorithms
12841 are available, a new (up to now undocumented) command
12842 "openssl list-cipher-commands" is used.
12845 *) Bugfix: s_client occasionally would sleep in select() when
12846 it should have checked SSL_pending() first.
12849 *) New functions DSA_do_sign and DSA_do_verify to provide access to
12850 the raw DSA values prior to ASN.1 encoding.
12853 *) Tweaks to Configure
12854 [Niels Poppe <niels@netbox.org>]
12856 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
12860 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
12863 *) New config option to avoid instructions that are illegal on the 80386.
12864 The default code is faster, but requires at least a 486.
12867 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
12868 SSL2_SERVER_VERSION (not used at all) macros, which are now the
12869 same as SSL2_VERSION anyway.
12872 *) New "-showcerts" option for s_client.
12875 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
12876 application. Various cleanups and fixes.
12879 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
12880 modify error routines to work internally. Add error codes and PBE init
12881 to library startup routines.
12884 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
12885 packing functions to asn1 and evp. Changed function names and error
12886 codes along the way.
12889 *) PKCS12 integration: and so it begins... First of several patches to
12890 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
12891 objects to objects.h
12894 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
12895 and display support for Thawte strong extranet extension.
12898 *) Add LinuxPPC support.
12899 [Jeff Dubrule <igor@pobox.org>]
12901 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
12902 bn_div_words in alpha.s.
12903 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
12905 *) Make sure the RSA OAEP test is skipped under -DRSAref because
12906 OAEP isn't supported when OpenSSL is built with RSAref.
12907 [Ulf Moeller <ulf@fitug.de>]
12909 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
12910 so they no longer are missing under -DNOPROTO.
12911 [Soren S. Jorvang <soren@t.dk>]
12914 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
12916 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
12917 doesn't work when the session is reused. Coming soon!
12920 *) Fix a security hole, that allows sessions to be reused in the wrong
12921 context thus bypassing client cert protection! All software that uses
12922 client certs and session caches in multiple contexts NEEDS PATCHING to
12923 allow session reuse! A fuller solution is in the works.
12924 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
12926 *) Some more source tree cleanups (removed obsolete files
12927 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
12928 permission on "config" script to be executable) and a fix for the INSTALL
12930 [Ulf Moeller <ulf@fitug.de>]
12932 *) Remove some legacy and erroneous uses of malloc, free instead of
12934 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
12936 *) Make rsa_oaep_test return non-zero on error.
12937 [Ulf Moeller <ulf@fitug.de>]
12939 *) Add support for native Solaris shared libraries. Configure
12940 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
12941 if someone would make that last step automatic.
12942 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
12944 *) ctx_size was not built with the right compiler during "make links". Fixed.
12947 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
12948 except NULL ciphers". This means the default cipher list will no longer
12949 enable NULL ciphers. They need to be specifically enabled e.g. with
12950 the string "DEFAULT:eNULL".
12953 *) Fix to RSA private encryption routines: if p < q then it would
12954 occasionally produce an invalid result. This will only happen with
12955 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
12958 *) Be less restrictive and allow also `perl util/perlpath.pl
12959 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
12960 because this way one can also use an interpreter named `perl5' (which is
12961 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
12962 installed as `perl').
12963 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12965 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
12966 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12968 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
12969 advapi32.lib to Win32 build and change the pem test comparison
12970 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
12971 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
12972 and crypto/des/ede_cbcm_enc.c.
12975 *) DES quad checksum was broken on big-endian architectures. Fixed.
12978 *) Comment out two functions in bio.h that aren't implemented. Fix up the
12979 Win32 test batch file so it (might) work again. The Win32 test batch file
12980 is horrible: I feel ill....
12983 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
12984 in e_os.h. Audit of header files to check ANSI and non ANSI
12985 sections: 10 functions were absent from non ANSI section and not exported
12986 from Windows DLLs. Fixed up libeay.num for new functions.
12989 *) Make `openssl version' output lines consistent.
12990 [Ralf S. Engelschall]
12992 *) Fix Win32 symbol export lists for BIO functions: Added
12993 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
12994 to ms/libeay{16,32}.def.
12995 [Ralf S. Engelschall]
12997 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
12998 fine under Unix and passes some trivial tests I've now added. But the
12999 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
13000 added to make sure no one expects that this stuff really works in the
13001 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
13002 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
13004 [Ralf S. Engelschall]
13006 *) Fix the generation of two part addresses in perl.
13007 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
13009 *) Add config entry for Linux on MIPS.
13010 [John Tobey <jtobey@channel1.com>]
13012 *) Make links whenever Configure is run, unless we are on Windoze.
13015 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
13016 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
13020 *) Add a useful kludge to allow package maintainers to specify compiler and
13021 other platforms details on the command line without having to patch the
13022 Configure script everytime: One now can use ``perl Configure
13023 <id>:<details>'', i.e. platform ids are allowed to have details appended
13024 to them (separated by colons). This is treated as there would be a static
13025 pre-configured entry in Configure's %table under key <id> with value
13026 <details> and ``perl Configure <id>'' is called. So, when you want to
13027 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
13028 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
13029 now, which overrides the FreeBSD-elf entry on-the-fly.
13030 [Ralf S. Engelschall]
13032 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
13035 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
13036 on the `perl Configure ...' command line. This way one can compile
13037 OpenSSL libraries with Position Independent Code (PIC) which is needed
13038 for linking it into DSOs.
13039 [Ralf S. Engelschall]
13041 *) Remarkably, export ciphers were totally broken and no-one had noticed!
13045 *) Cleaned up the LICENSE document: The official contact for any license
13046 questions now is the OpenSSL core team under openssl-core@openssl.org.
13047 And add a paragraph about the dual-license situation to make sure people
13048 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
13049 to the OpenSSL toolkit.
13050 [Ralf S. Engelschall]
13052 *) General source tree makefile cleanups: Made `making xxx in yyy...'
13053 display consistent in the source tree and replaced `/bin/rm' by `rm'.
13054 Additionally cleaned up the `make links' target: Remove unnecessary
13055 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
13056 to speed processing and no longer clutter the display with confusing
13057 stuff. Instead only the actually done links are displayed.
13058 [Ralf S. Engelschall]
13060 *) Permit null encryption ciphersuites, used for authentication only. It used
13061 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
13062 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
13066 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
13067 signed attributes when verifying signatures (this would break them),
13068 the detached data encoding was wrong and public keys obtained using
13069 X509_get_pubkey() weren't freed.
13072 *) Add text documentation for the BUFFER functions. Also added a work around
13073 to a Win95 console bug. This was triggered by the password read stuff: the
13074 last character typed gets carried over to the next fread(). If you were
13075 generating a new cert request using 'req' for example then the last
13076 character of the passphrase would be CR which would then enter the first
13080 *) Added the new `Includes OpenSSL Cryptography Software' button as
13081 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
13082 button and can be used by applications based on OpenSSL to show the
13083 relationship to the OpenSSL project.
13084 [Ralf S. Engelschall]
13086 *) Remove confusing variables in function signatures in files
13087 ssl/ssl_lib.c and ssl/ssl.h.
13088 [Lennart Bong <lob@kulthea.stacken.kth.se>]
13090 *) Don't install bss_file.c under PREFIX/include/
13091 [Lennart Bong <lob@kulthea.stacken.kth.se>]
13093 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
13094 functions that return function pointers and has support for NT specific
13095 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
13096 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
13097 unsigned to signed types: this was killing the Win32 compile.
13100 *) Add new certificate file to stack functions,
13101 SSL_add_dir_cert_subjects_to_stack() and
13102 SSL_add_file_cert_subjects_to_stack(). These largely supplant
13103 SSL_load_client_CA_file(), and can be used to add multiple certs easily
13104 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
13105 This means that Apache-SSL and similar packages don't have to mess around
13106 to add as many CAs as they want to the preferred list.
13109 *) Experiment with doxygen documentation. Currently only partially applied to
13111 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
13112 openssl.doxy as the configuration file.
13115 *) Get rid of remaining C++-style comments which strict C compilers hate.
13116 [Ralf S. Engelschall, pointed out by Carlos Amengual]
13118 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
13119 compiled in by default: it has problems with large keys.
13122 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
13123 DH private keys and/or callback functions which directly correspond to
13124 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
13125 is needed for applications which have to configure certificates on a
13126 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
13128 For the RSA certificate situation is makes no difference, but
13129 for the DSA certificate situation this fixes the "no shared cipher"
13130 problem where the OpenSSL cipher selection procedure failed because the
13131 temporary keys were not overtaken from the context and the API provided
13132 no way to reconfigure them.
13133 The new functions now let applications reconfigure the stuff and they
13134 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
13135 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
13136 non-public-API function ssl_cert_instantiate() is used as a helper
13137 function and also to reduce code redundancy inside ssl_rsa.c.
13138 [Ralf S. Engelschall]
13140 *) Move s_server -dcert and -dkey options out of the undocumented feature
13141 area because they are useful for the DSA situation and should be
13142 recognized by the users.
13143 [Ralf S. Engelschall]
13145 *) Fix the cipher decision scheme for export ciphers: the export bits are
13146 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
13147 SSL_EXP_MASK. So, the original variable has to be used instead of the
13148 already masked variable.
13149 [Richard Levitte <levitte@stacken.kth.se>]
13151 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
13152 [Richard Levitte <levitte@stacken.kth.se>]
13154 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
13155 from `int' to `unsigned int' because it's a length and initialized by
13156 EVP_DigestFinal() which expects an `unsigned int *'.
13157 [Richard Levitte <levitte@stacken.kth.se>]
13159 *) Don't hard-code path to Perl interpreter on shebang line of Configure
13160 script. Instead use the usual Shell->Perl transition trick.
13161 [Ralf S. Engelschall]
13163 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
13164 (in addition to RSA certificates) to match the behaviour of `openssl dsa
13165 -noout -modulus' as it's already the case for `openssl rsa -noout
13166 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
13167 currently the public key is printed (a decision which was already done by
13168 `openssl dsa -modulus' in the past) which serves a similar purpose.
13169 Additionally the NO_RSA no longer completely removes the whole -modulus
13170 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
13172 [Ralf S. Engelschall]
13174 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
13175 BIO. See the source (crypto/evp/bio_ok.c) for more info.
13176 [Arne Ansper <arne@ats.cyber.ee>]
13178 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
13179 to be added. Now both 'req' and 'ca' can use new objects defined in the
13183 *) Add cool BIO that does syslog (or event log on NT).
13184 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
13186 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
13187 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
13188 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
13189 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
13192 *) Add preliminary config info for new extension code.
13195 *) Make RSA_NO_PADDING really use no padding.
13196 [Ulf Moeller <ulf@fitug.de>]
13198 *) Generate errors when private/public key check is done.
13201 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
13202 for some CRL extensions and new objects added.
13205 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
13206 key usage extension and fuller support for authority key id.
13209 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
13210 padding method for RSA, which is recommended for new applications in PKCS
13211 #1 v2.0 (RFC 2437, October 1998).
13212 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
13213 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
13214 against Bleichbacher's attack on RSA.
13215 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
13218 *) Updates to the new SSL compression code
13219 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13221 *) Fix so that the version number in the master secret, when passed
13222 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
13223 (because the server will not accept higher), that the version number
13224 is 0x03,0x01, not 0x03,0x00
13225 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13227 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
13228 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
13229 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
13232 *) Support for RAW extensions where an arbitrary extension can be
13233 created by including its DER encoding. See apps/openssl.cnf for
13237 *) Make sure latest Perl versions don't interpret some generated C array
13238 code as Perl array code in the crypto/err/err_genc.pl script.
13239 [Lars Weber <3weber@informatik.uni-hamburg.de>]
13241 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
13242 not many people have the assembler. Various Win32 compilation fixes and
13243 update to the INSTALL.W32 file with (hopefully) more accurate Win32
13244 build instructions.
13247 *) Modify configure script 'Configure' to automatically create crypto/date.h
13248 file under Win32 and also build pem.h from pem.org. New script
13249 util/mkfiles.pl to create the MINFO file on environments that can't do a
13250 'make files': perl util/mkfiles.pl >MINFO should work.
13253 *) Major rework of DES function declarations, in the pursuit of correctness
13254 and purity. As a result, many evil casts evaporated, and some weirdness,
13255 too. You may find this causes warnings in your code. Zapping your evil
13256 casts will probably fix them. Mostly.
13259 *) Fix for a typo in asn1.h. Bug fix to object creation script
13260 obj_dat.pl. It considered a zero in an object definition to mean
13261 "end of object": none of the objects in objects.h have any zeros
13262 so it wasn't spotted.
13263 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
13265 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
13266 Masking (CBCM). In the absence of test vectors, the best I have been able
13267 to do is check that the decrypt undoes the encrypt, so far. Send me test
13268 vectors if you have them.
13271 *) Correct calculation of key length for export ciphers (too much space was
13272 allocated for null ciphers). This has not been tested!
13275 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
13276 message is now correct (it understands "crypto" and "ssl" on its
13277 command line). There is also now an "update" option. This will update
13278 the util/ssleay.num and util/libeay.num files with any new functions.
13280 perl util/mkdef.pl crypto ssl update
13281 it will update them.
13284 *) Overhauled the Perl interface (perl/*):
13285 - ported BN stuff to OpenSSL's different BN library
13286 - made the perl/ source tree CVS-aware
13287 - renamed the package from SSLeay to OpenSSL (the files still contain
13288 their history because I've copied them in the repository)
13289 - removed obsolete files (the test scripts will be replaced
13290 by better Test::Harness variants in the future)
13291 [Ralf S. Engelschall]
13293 *) First cut for a very conservative source tree cleanup:
13294 1. merge various obsolete readme texts into doc/ssleay.txt
13295 where we collect the old documents and readme texts.
13296 2. remove the first part of files where I'm already sure that we no
13297 longer need them because of three reasons: either they are just temporary
13298 files which were left by Eric or they are preserved original files where
13299 I've verified that the diff is also available in the CVS via "cvs diff
13300 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
13301 the crypto/md/ stuff).
13302 [Ralf S. Engelschall]
13304 *) More extension code. Incomplete support for subject and issuer alt
13305 name, issuer and authority key id. Change the i2v function parameters
13306 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
13307 what that's for :-) Fix to ASN1 macro which messed up
13308 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
13311 *) Preliminary support for ENUMERATED type. This is largely copied from the
13315 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
13316 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13318 *) Make sure `make rehash' target really finds the `openssl' program.
13319 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
13321 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
13322 like to hear about it if this slows down other processors.
13325 *) Add CygWin32 platform information to Configure script.
13326 [Alan Batie <batie@aahz.jf.intel.com>]
13328 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
13329 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
13331 *) New program nseq to manipulate netscape certificate sequences
13334 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
13338 *) Fixes to BN code. Previously the default was to define BN_RECURSION
13339 but the BN code had some problems that would cause failures when
13340 doing certificate verification and some other functions.
13341 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
13343 *) Add ASN1 and PEM code to support netscape certificate sequences.
13346 *) Add ASN1 and PEM code to support netscape certificate sequences.
13349 *) Add several PKIX and private extended key usage OIDs.
13352 *) Modify the 'ca' program to handle the new extension code. Modify
13353 openssl.cnf for new extension format, add comments.
13356 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
13357 and add a sample to openssl.cnf so req -x509 now adds appropriate
13361 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
13362 error code, add initial support to X509_print() and x509 application.
13365 *) Takes a deep breath and start adding X509 V3 extension support code. Add
13366 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
13367 stuff is currently isolated and isn't even compiled yet.
13370 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
13371 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
13372 Removed the versions check from X509 routines when loading extensions:
13373 this allows certain broken certificates that don't set the version
13374 properly to be processed.
13377 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
13378 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
13379 can still be regenerated with "make depend".
13382 *) Spelling mistake in C version of CAST-128.
13383 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
13385 *) Changes to the error generation code. The perl script err-code.pl
13386 now reads in the old error codes and retains the old numbers, only
13387 adding new ones if necessary. It also only changes the .err files if new
13388 codes are added. The makefiles have been modified to only insert errors
13389 when needed (to avoid needlessly modifying header files). This is done
13390 by only inserting errors if the .err file is newer than the auto generated
13391 C file. To rebuild all the error codes from scratch (the old behaviour)
13392 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
13393 or delete all the .err files.
13396 *) CAST-128 was incorrectly implemented for short keys. The C version has
13397 been fixed, but is untested. The assembler versions are also fixed, but
13398 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
13399 to regenerate it if needed.
13400 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
13401 Hagino <itojun@kame.net>]
13403 *) File was opened incorrectly in randfile.c.
13404 [Ulf Möller <ulf@fitug.de>]
13406 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
13407 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
13408 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
13409 al: it's just almost always a UTCTime. Note this patch adds new error
13410 codes so do a "make errors" if there are problems.
13413 *) Correct Linux 1 recognition in config.
13414 [Ulf Möller <ulf@fitug.de>]
13416 *) Remove pointless MD5 hash when using DSA keys in ca.
13417 [Anonymous <nobody@replay.com>]
13419 *) Generate an error if given an empty string as a cert directory. Also
13420 generate an error if handed NULL (previously returned 0 to indicate an
13421 error, but didn't set one).
13422 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
13424 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
13427 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
13428 parameters. This was causing a warning which killed off the Win32 compile.
13431 *) Remove C++ style comments from crypto/bn/bn_local.h.
13432 [Neil Costigan <neil.costigan@celocom.com>]
13434 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
13435 based on a text string, looking up short and long names and finally
13436 "dot" format. The "dot" format stuff didn't work. Added new function
13437 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
13438 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
13439 OID is not part of the table.
13442 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
13443 X509_LOOKUP_by_alias().
13446 *) Sort openssl functions by name.
13449 *) Get the gendsa program working (hopefully) and add it to app list. Remove
13450 encryption from sample DSA keys (in case anyone is interested the password
13454 *) Make _all_ *_free functions accept a NULL pointer.
13455 [Frans Heymans <fheymans@isaserver.be>]
13457 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
13459 [Anonymous <nobody@replay.com>]
13461 *) s_server should send the CAfile as acceptable CAs, not its own cert.
13462 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13464 *) Don't blow it for numeric -newkey arguments to apps/req.
13465 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
13467 *) Temp key "for export" tests were wrong in s3_srvr.c.
13468 [Anonymous <nobody@replay.com>]
13470 *) Add prototype for temp key callback functions
13471 SSL_CTX_set_tmp_{rsa,dh}_callback().
13474 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
13475 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
13478 *) X509_name_add_entry() freed the wrong thing after an error.
13479 [Arne Ansper <arne@ats.cyber.ee>]
13481 *) rsa_eay.c would attempt to free a NULL context.
13482 [Arne Ansper <arne@ats.cyber.ee>]
13484 *) BIO_s_socket() had a broken should_retry() on Windoze.
13485 [Arne Ansper <arne@ats.cyber.ee>]
13487 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
13488 [Arne Ansper <arne@ats.cyber.ee>]
13490 *) Make sure the already existing X509_STORE->depth variable is initialized
13491 in X509_STORE_new(), but document the fact that this variable is still
13492 unused in the certificate verification process.
13493 [Ralf S. Engelschall]
13495 *) Fix the various library and apps files to free up pkeys obtained from
13496 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
13499 *) Fix reference counting in X509_PUBKEY_get(). This makes
13500 demos/maurice/example2.c work, amongst others, probably.
13501 [Steve Henson and Ben Laurie]
13503 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
13504 `openssl' and second, the shortcut symlinks for the `openssl <command>'
13505 are no longer created. This way we have a single and consistent command
13506 line interface `openssl <command>', similar to `cvs <command>'.
13507 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
13509 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
13510 BIT STRING wrapper always have zero unused bits.
13513 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
13516 *) Make the top-level INSTALL documentation easier to understand.
13519 *) Makefiles updated to exit if an error occurs in a sub-directory
13520 make (including if user presses ^C) [Paul Sutton]
13522 *) Make Montgomery context stuff explicit in RSA data structure.
13525 *) Fix build order of pem and err to allow for generated pem.h.
13528 *) Fix renumbering bug in X509_NAME_delete_entry().
13531 *) Enhanced the err-ins.pl script so it makes the error library number
13532 global and can add a library name. This is needed for external ASN1 and
13533 other error libraries.
13536 *) Fixed sk_insert which never worked properly.
13539 *) Fix ASN1 macros so they can handle indefinite length constructed
13540 EXPLICIT tags. Some non standard certificates use these: they can now
13544 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
13545 into a single doc/ssleay.txt bundle. This way the information is still
13546 preserved but no longer messes up this directory. Now it's new room for
13547 the new set of documentation files.
13548 [Ralf S. Engelschall]
13550 *) SETs were incorrectly DER encoded. This was a major pain, because they
13551 shared code with SEQUENCEs, which aren't coded the same. This means that
13552 almost everything to do with SETs or SEQUENCEs has either changed name or
13553 number of arguments.
13554 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
13556 *) Fix test data to work with the above.
13559 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
13560 was already fixed by Eric for 0.9.1 it seems.
13561 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
13563 *) Autodetect FreeBSD3.
13566 *) Fix various bugs in Configure. This affects the following platforms:
13570 unixware-2.0-pentium
13574 *) Eliminate generated files from CVS. Reorder tests to regenerate files
13575 before they are needed.
13578 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
13582 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
13584 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
13585 changed SSLeay to OpenSSL in version strings.
13586 [Ralf S. Engelschall]
13588 *) Some fixups to the top-level documents.
13591 *) Fixed the nasty bug where rsaref.h was not found under compile-time
13592 because the symlink to include/ was missing.
13593 [Ralf S. Engelschall]
13595 *) Incorporated the popular no-RSA/DSA-only patches
13596 which allow to compile a RSA-free SSLeay.
13597 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
13599 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
13600 when "ssleay" is still not found.
13601 [Ralf S. Engelschall]
13603 *) Added more platforms to Configure: Cray T3E, HPUX 11,
13604 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
13606 *) Updated the README file.
13607 [Ralf S. Engelschall]
13609 *) Added various .cvsignore files in the CVS repository subdirs
13610 to make a "cvs update" really silent.
13611 [Ralf S. Engelschall]
13613 *) Recompiled the error-definition header files and added
13614 missing symbols to the Win32 linker tables.
13615 [Ralf S. Engelschall]
13617 *) Cleaned up the top-level documents;
13618 o new files: CHANGES and LICENSE
13619 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
13620 o merged COPYRIGHT into LICENSE
13621 o removed obsolete TODO file
13622 o renamed MICROSOFT to INSTALL.W32
13623 [Ralf S. Engelschall]
13625 *) Removed dummy files from the 0.9.1b source tree:
13626 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
13627 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
13628 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
13629 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
13630 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
13631 [Ralf S. Engelschall]
13633 *) Added various platform portability fixes.
13636 *) The Genesis of the OpenSSL rpject:
13637 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
13638 Young and Tim J. Hudson created while they were working for C2Net until
13640 [The OpenSSL Project]
13643 Changes between 0.9.0b and 0.9.1b [not released]
13645 *) Updated a few CA certificates under certs/
13648 *) Changed some BIGNUM api stuff.
13651 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
13652 DGUX x86, Linux Alpha, etc.
13655 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
13656 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
13660 *) Add -strparse option to asn1pars program which parses nested
13662 [Dr Stephen Henson <shenson@bigfoot.com>]
13664 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
13667 *) DSA fix for "ca" program.
13670 *) Added "-genkey" option to "dsaparam" program.
13673 *) Added RIPE MD160 (rmd160) message digest.
13676 *) Added -a (all) option to "ssleay version" command.
13679 *) Added PLATFORM define which is the id given to Configure.
13682 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
13685 *) Extended the ASN.1 parser routines.
13688 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
13691 *) Added a BN_CTX to the BN library.
13694 *) Fixed the weak key values in DES library
13697 *) Changed API in EVP library for cipher aliases.
13700 *) Added support for RC2/64bit cipher.
13703 *) Converted the lhash library to the crypto/mem.c functions.
13706 *) Added more recognized ASN.1 object ids.
13709 *) Added more RSA padding checks for SSL/TLS.
13712 *) Added BIO proxy/filter functionality.
13715 *) Added extra_certs to SSL_CTX which can be used
13716 send extra CA certificates to the client in the CA cert chain sending
13717 process. It can be configured with SSL_CTX_add_extra_chain_cert().
13720 *) Now Fortezza is denied in the authentication phase because
13721 this is key exchange mechanism is not supported by SSLeay at all.
13724 *) Additional PKCS1 checks.
13727 *) Support the string "TLSv1" for all TLS v1 ciphers.
13730 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
13731 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
13734 *) Fixed a few memory leaks.
13737 *) Fixed various code and comment typos.
13740 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
13741 bytes sent in the client random.
13742 [Edward Bishop <ebishop@spyglass.com>]