5 Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
7 *) The demo files in crypto/threads were moved to demo/threads.
10 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron and sureware.
13 *) New ASN.1 embed macro.
15 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
16 structure is not allocated: it is part of the parent. That is instead of
24 This reduces memory fragmentation and make it impossible to accidentally
25 set a mandatory field to NULL.
27 This currently only works for some fields specifically a SEQUENCE, CHOICE,
28 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
29 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
33 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
36 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
37 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
38 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
39 DES and RC4 ciphersuites.
42 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
43 This changes the decoding behaviour for some invalid messages,
44 though the change is mostly in the more lenient direction, and
45 legacy behaviour is preserved as much as possible.
47 *) Fix no-stdio build.
48 [ David Woodhouse <David.Woodhouse@intel.com> and also
49 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
50 *) New testing framework
51 The testing framework has been largely rewritten and is now using
52 perl and the perl modules Test::Harness and an extended variant of
53 Test::More called OpenSSL::Test to do its work. All test scripts in
54 test/ have been rewritten into test recipes, and all direct calls to
55 executables in test/Makefile have become individual recipes using the
56 simplified testing OpenSSL::Test::Simple.
58 For documentation on our testing modules, do:
60 perldoc test/testlib/OpenSSL/Test/Simple.pm
61 perldoc test/testlib/OpenSSL/Test.pm
65 *) In DSA_generate_parameters_ex, if the provided seed is too short,
67 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
69 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
70 from RFC4279, RFC4785, RFC5487, RFC5489.
72 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
73 original RSA_PSK patch.
76 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
77 era flag was never set throughout the codebase (only read). Also removed
78 SSL3_FLAGS_POP_BUFFER which was only used if
79 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
82 *) Changed the default name options in the "ca", "crl", "req" and "x509"
83 to be "oneline" instead of "compat".
86 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
87 not aware of clients that still exhibit this bug, and the workaround
88 hasn't been working properly for a while.
91 *) The return type of BIO_number_read() and BIO_number_written() as well as
92 the corresponding num_read and num_write members in the BIO structure has
93 changed from unsigned long to uint64_t. On platforms where an unsigned
94 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
98 *) Given the pervasive nature of TLS extensions it is inadvisable to run
99 OpenSSL without support for them. It also means that maintaining
100 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
101 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
104 *) Removed support for the two export grade static DH ciphersuites
105 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
106 were newly added (along with a number of other static DH ciphersuites) to
107 1.0.2. However the two export ones have *never* worked since they were
108 introduced. It seems strange in any case to be adding new export
109 ciphersuites, and given "logjam" it also does not seem correct to fix them.
112 *) Version negotiation has been rewritten. In particular SSLv23_method(),
113 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
114 and turned into macros which simply call the new preferred function names
115 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
116 should use the new names instead. Also as part of this change the ssl23.h
117 header file has been removed.
120 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
121 code and the associated standard is no longer considered fit-for-purpose.
124 *) RT2547 was closed. When generating a private key, try to make the
125 output file readable only by the owner. This behavior change might
126 be noticeable when interacting with other software.
128 *) Added HTTP GET support to the ocsp command.
131 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
134 *) Added support for TLS extended master secret from
135 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
136 initial patch which was a great help during development.
139 *) All libssl internal structures have been removed from the public header
140 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
141 now redundant). Users should not attempt to access internal structures
142 directly. Instead they should use the provided API functions.
145 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
146 Access to deprecated functions can be re-enabled by running config with
147 "enable-deprecated". In addition applications wishing to use deprecated
148 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
149 will, by default, disable some transitive includes that previously existed
150 in the header files (e.g. ec.h will no longer, by default, include bn.h)
153 *) Added support for OCB mode. OpenSSL has been granted a patent license
154 compatible with the OpenSSL license for use of OCB. Details are available
155 at https://www.openssl.org/docs/misc/OCB-patent-grant-OpenSSL.pdf. Support
156 for OCB can be removed by calling config with no-ocb.
159 *) SSLv2 support has been removed. It still supports receiving a SSLv2
160 compatible client hello.
163 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
164 done while fixing the error code for the key-too-small case.
165 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
167 *) CA.sh has been removmed; use CA.pl instead.
170 *) Removed old DES API.
173 *) Remove various unsupported platforms:
179 Sinix/ReliantUNIX RM400
184 16-bit platforms such as WIN16
187 *) Clean up OPENSSL_NO_xxx #define's
188 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
189 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
190 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
191 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
192 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
193 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
194 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
195 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
196 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
197 Remove MS_STATIC; it's a relic from platforms <32 bits.
200 *) Cleaned up dead code
201 Remove all but one '#ifdef undef' which is to be looked at.
204 *) Clean up calling of xxx_free routines.
205 Just like free(), fix most of the xxx_free routines to accept
206 NULL. Remove the non-null checks from callers. Save much code.
209 *) Add secure heap for storage of private keys (when possible).
210 Add BIO_s_secmem(), CBIGNUM, etc.
211 Contributed by Akamai Technologies under our Corporate CLA.
214 *) Experimental support for a new, fast, unbiased prime candidate generator,
215 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
216 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
218 *) New output format NSS in the sess_id command line tool. This allows
219 exporting the session id and the master key in NSS keylog format.
220 [Martin Kaiser <martin@kaiser.cx>]
222 *) Harmonize version and its documentation. -f flag is used to display
224 [mancha <mancha1@zoho.com>]
226 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
227 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
228 [mancha <mancha1@zoho.com>]
230 *) Fix some double frees. These are not thought to be exploitable.
231 [mancha <mancha1@zoho.com>]
233 *) A missing bounds check in the handling of the TLS heartbeat extension
234 can be used to reveal up to 64k of memory to a connected client or
237 Thanks for Neel Mehta of Google Security for discovering this bug and to
238 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
239 preparing the fix (CVE-2014-0160)
240 [Adam Langley, Bodo Moeller]
242 *) Fix for the attack described in the paper "Recovering OpenSSL
243 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
244 by Yuval Yarom and Naomi Benger. Details can be obtained from:
245 http://eprint.iacr.org/2014/140
247 Thanks to Yuval Yarom and Naomi Benger for discovering this
248 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
249 [Yuval Yarom and Naomi Benger]
251 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
252 this fixes a limitation in previous versions of OpenSSL.
255 *) Experimental encrypt-then-mac support.
257 Experimental support for encrypt then mac from
258 draft-gutmann-tls-encrypt-then-mac-02.txt
260 To enable it set the appropriate extension number (0x42 for the test
261 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
263 For non-compliant peers (i.e. just about everything) this should have no
266 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
270 *) Add EVP support for key wrapping algorithms, to avoid problems with
271 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
272 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
273 algorithms and include tests cases.
276 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
280 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
281 MGF1 digest and OAEP label.
284 *) Make openssl verify return errors.
285 [Chris Palmer <palmer@google.com> and Ben Laurie]
287 *) New function ASN1_TIME_diff to calculate the difference between two
288 ASN1_TIME structures or one structure and the current time.
291 *) Update fips_test_suite to support multiple command line options. New
292 test to induce all self test errors in sequence and check expected
296 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
297 sign or verify all in one operation.
300 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
301 test programs and fips_test_suite. Includes functionality to parse
302 the minimal script output of fipsalgest.pl directly.
305 *) Add authorisation parameter to FIPS_module_mode_set().
308 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
311 *) Use separate DRBG fields for internal and external flags. New function
312 FIPS_drbg_health_check() to perform on demand health checking. Add
313 generation tests to fips_test_suite with reduced health check interval to
314 demonstrate periodic health checking. Add "nodh" option to
315 fips_test_suite to skip very slow DH test.
318 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
322 *) More extensive health check for DRBG checking many more failure modes.
323 New function FIPS_selftest_drbg_all() to handle every possible DRBG
324 combination: call this in fips_test_suite.
327 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
328 and POST to handle Dual EC cases.
331 *) Add support for canonical generation of DSA parameter 'g'. See
334 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
335 POST to handle HMAC cases.
338 *) Add functions FIPS_module_version() and FIPS_module_version_text()
339 to return numerical and string versions of the FIPS module number.
342 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
343 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
344 outside the validated module in the FIPS capable OpenSSL.
347 *) Minor change to DRBG entropy callback semantics. In some cases
348 there is no multiple of the block length between min_len and
349 max_len. Allow the callback to return more than max_len bytes
350 of entropy but discard any extra: it is the callback's responsibility
351 to ensure that the extra data discarded does not impact the
352 requested amount of entropy.
355 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
356 information in FIPS186-3, SP800-57 and SP800-131A.
359 *) CCM support via EVP. Interface is very similar to GCM case except we
360 must supply all data in one chunk (i.e. no update, final) and the
361 message length must be supplied if AAD is used. Add algorithm test
365 *) Initial version of POST overhaul. Add POST callback to allow the status
366 of POST to be monitored and/or failures induced. Modify fips_test_suite
367 to use callback. Always run all selftests even if one fails.
370 *) XTS support including algorithm test driver in the fips_gcmtest program.
371 Note: this does increase the maximum key length from 32 to 64 bytes but
372 there should be no binary compatibility issues as existing applications
373 will never use XTS mode.
376 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
377 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
378 performs algorithm blocking for unapproved PRNG types. Also do not
379 set PRNG type in FIPS_mode_set(): leave this to the application.
380 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
381 the standard OpenSSL PRNG: set additional data to a date time vector.
384 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
385 This shouldn't present any incompatibility problems because applications
386 shouldn't be using these directly and any that are will need to rethink
387 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
390 *) Extensive self tests and health checking required by SP800-90 DRBG.
391 Remove strength parameter from FIPS_drbg_instantiate and always
392 instantiate at maximum supported strength.
395 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
398 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
401 *) New function DH_compute_key_padded() to compute a DH key and pad with
402 leading zeroes if needed: this complies with SP800-56A et al.
405 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
406 anything, incomplete, subject to change and largely untested at present.
409 *) Modify fipscanisteronly build option to only build the necessary object
410 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
413 *) Add experimental option FIPSSYMS to give all symbols in
414 fipscanister.o and FIPS or fips prefix. This will avoid
415 conflicts with future versions of OpenSSL. Add perl script
416 util/fipsas.pl to preprocess assembly language source files
417 and rename any affected symbols.
420 *) Add selftest checks and algorithm block of non-fips algorithms in
421 FIPS mode. Remove DES2 from selftests.
424 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
425 return internal method without any ENGINE dependencies. Add new
426 tiny fips sign and verify functions.
429 *) New build option no-ec2m to disable characteristic 2 code.
432 *) New build option "fipscanisteronly". This only builds fipscanister.o
433 and (currently) associated fips utilities. Uses the file Makefile.fips
434 instead of Makefile.org as the prototype.
437 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
438 Update fips_gcmtest to use IV generator.
441 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
442 setting output buffer to NULL. The *Final function must be
443 called although it will not retrieve any additional data. The tag
444 can be set or retrieved with a ctrl. The IV length is by default 12
445 bytes (96 bits) but can be set to an alternative value. If the IV
446 length exceeds the maximum IV length (currently 16 bytes) it cannot be
450 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
451 underlying do_cipher function handles all cipher semantics itself
452 including padding and finalisation. This is useful if (for example)
453 an ENGINE cipher handles block padding itself. The behaviour of
454 do_cipher is subtly changed if this flag is set: the return value
455 is the number of characters written to the output buffer (zero is
456 no longer an error code) or a negative error code. Also if the
457 input buffer is NULL and length 0 finalisation should be performed.
460 *) If a candidate issuer certificate is already part of the constructed
461 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
464 *) Improve forward-security support: add functions
466 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
467 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
469 for use by SSL/TLS servers; the callback function will be called whenever a
470 new session is created, and gets to decide whether the session may be
471 cached to make it resumable (return 0) or not (return 1). (As by the
472 SSL/TLS protocol specifications, the session_id sent by the server will be
473 empty to indicate that the session is not resumable; also, the server will
474 not generate RFC 4507 (RFC 5077) session tickets.)
476 A simple reasonable callback implementation is to return is_forward_secure.
477 This parameter will be set to 1 or 0 depending on the ciphersuite selected
478 by the SSL/TLS server library, indicating whether it can provide forward
480 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
482 *) New -verify_name option in command line utilities to set verification
486 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
487 Add CMAC pkey methods.
490 *) Experimental renegotiation in s_server -www mode. If the client
491 browses /reneg connection is renegotiated. If /renegcert it is
492 renegotiated requesting a certificate.
495 *) Add an "external" session cache for debugging purposes to s_server. This
496 should help trace issues which normally are only apparent in deployed
497 multi-process servers.
500 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
501 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
502 BIO_set_cipher() and some obscure PEM functions were changed so they
503 can now return an error. The RAND changes required a change to the
504 RAND_METHOD structure.
507 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
508 a gcc attribute to warn if the result of a function is ignored. This
509 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
510 whose return value is often ignored.
513 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
515 *) Alternate chains certificate forgery
517 During certificate verfification, OpenSSL will attempt to find an
518 alternative certificate chain if the first attempt to build such a chain
519 fails. An error in the implementation of this logic can mean that an
520 attacker could cause certain checks on untrusted certificates to be
521 bypassed, such as the CA flag, enabling them to use a valid leaf
522 certificate to act as a CA and "issue" an invalid certificate.
524 This issue was reported to OpenSSL by Adam Langley/David Benjamin
528 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
530 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
531 incompatibility in the handling of HMAC. The previous ABI has now been
535 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
537 *) Malformed ECParameters causes infinite loop
539 When processing an ECParameters structure OpenSSL enters an infinite loop
540 if the curve specified is over a specially malformed binary polynomial
543 This can be used to perform denial of service against any
544 system which processes public keys, certificate requests or
545 certificates. This includes TLS clients and TLS servers with
546 client authentication enabled.
548 This issue was reported to OpenSSL by Joseph Barr-Pixton.
552 *) Exploitable out-of-bounds read in X509_cmp_time
554 X509_cmp_time does not properly check the length of the ASN1_TIME
555 string and can read a few bytes out of bounds. In addition,
556 X509_cmp_time accepts an arbitrary number of fractional seconds in the
559 An attacker can use this to craft malformed certificates and CRLs of
560 various sizes and potentially cause a segmentation fault, resulting in
561 a DoS on applications that verify certificates or CRLs. TLS clients
562 that verify CRLs are affected. TLS clients and servers with client
563 authentication enabled may be affected if they use custom verification
566 This issue was reported to OpenSSL by Robert Swiecki (Google), and
567 independently by Hanno Böck.
571 *) PKCS7 crash with missing EnvelopedContent
573 The PKCS#7 parsing code does not handle missing inner EncryptedContent
574 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
575 with missing content and trigger a NULL pointer dereference on parsing.
577 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
578 structures from untrusted sources are affected. OpenSSL clients and
579 servers are not affected.
581 This issue was reported to OpenSSL by Michal Zalewski (Google).
585 *) CMS verify infinite loop with unknown hash function
587 When verifying a signedData message the CMS code can enter an infinite loop
588 if presented with an unknown hash function OID. This can be used to perform
589 denial of service against any system which verifies signedData messages using
591 This issue was reported to OpenSSL by Johannes Bauer.
595 *) Race condition handling NewSessionTicket
597 If a NewSessionTicket is received by a multi-threaded client when attempting to
598 reuse a previous ticket then a race condition can occur potentially leading to
599 a double free of the ticket data.
603 *) Only support 256-bit or stronger elliptic curves with the
604 'ecdh_auto' setting (server) or by default (client). Of supported
605 curves, prefer P-256 (both).
608 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
610 *) ClientHello sigalgs DoS fix
612 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
613 invalid signature algorithms extension a NULL pointer dereference will
614 occur. This can be exploited in a DoS attack against the server.
616 This issue was was reported to OpenSSL by David Ramos of Stanford
619 [Stephen Henson and Matt Caswell]
621 *) Multiblock corrupted pointer fix
623 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
624 feature only applies on 64 bit x86 architecture platforms that support AES
625 NI instructions. A defect in the implementation of "multiblock" can cause
626 OpenSSL's internal write buffer to become incorrectly set to NULL when
627 using non-blocking IO. Typically, when the user application is using a
628 socket BIO for writing, this will only result in a failed connection.
629 However if some other BIO is used then it is likely that a segmentation
630 fault will be triggered, thus enabling a potential DoS attack.
632 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
636 *) Segmentation fault in DTLSv1_listen fix
638 The DTLSv1_listen function is intended to be stateless and processes the
639 initial ClientHello from many peers. It is common for user code to loop
640 over the call to DTLSv1_listen until a valid ClientHello is received with
641 an associated cookie. A defect in the implementation of DTLSv1_listen means
642 that state is preserved in the SSL object from one invocation to the next
643 that can lead to a segmentation fault. Errors processing the initial
644 ClientHello can trigger this scenario. An example of such an error could be
645 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
648 This issue was reported to OpenSSL by Per Allansson.
652 *) Segmentation fault in ASN1_TYPE_cmp fix
654 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
655 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
656 certificate signature algorithm consistency this can be used to crash any
657 certificate verification operation and exploited in a DoS attack. Any
658 application which performs certificate verification is vulnerable including
659 OpenSSL clients and servers which enable client authentication.
663 *) Segmentation fault for invalid PSS parameters fix
665 The signature verification routines will crash with a NULL pointer
666 dereference if presented with an ASN.1 signature using the RSA PSS
667 algorithm and invalid parameters. Since these routines are used to verify
668 certificate signature algorithms this can be used to crash any
669 certificate verification operation and exploited in a DoS attack. Any
670 application which performs certificate verification is vulnerable including
671 OpenSSL clients and servers which enable client authentication.
673 This issue was was reported to OpenSSL by Brian Carpenter.
677 *) ASN.1 structure reuse memory corruption fix
679 Reusing a structure in ASN.1 parsing may allow an attacker to cause
680 memory corruption via an invalid write. Such reuse is and has been
681 strongly discouraged and is believed to be rare.
683 Applications that parse structures containing CHOICE or ANY DEFINED BY
684 components may be affected. Certificate parsing (d2i_X509 and related
685 functions) are however not affected. OpenSSL clients and servers are
690 *) PKCS7 NULL pointer dereferences fix
692 The PKCS#7 parsing code does not handle missing outer ContentInfo
693 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
694 missing content and trigger a NULL pointer dereference on parsing.
696 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
697 otherwise parse PKCS#7 structures from untrusted sources are
698 affected. OpenSSL clients and servers are not affected.
700 This issue was reported to OpenSSL by Michal Zalewski (Google).
704 *) DoS via reachable assert in SSLv2 servers fix
706 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
707 servers that both support SSLv2 and enable export cipher suites by sending
708 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
710 This issue was discovered by Sean Burford (Google) and Emilia Käsper
711 (OpenSSL development team).
715 *) Empty CKE with client auth and DHE fix
717 If client auth is used then a server can seg fault in the event of a DHE
718 ciphersuite being selected and a zero length ClientKeyExchange message
719 being sent by the client. This could be exploited in a DoS attack.
723 *) Handshake with unseeded PRNG fix
725 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
726 with an unseeded PRNG. The conditions are:
727 - The client is on a platform where the PRNG has not been seeded
728 automatically, and the user has not seeded manually
729 - A protocol specific client method version has been used (i.e. not
730 SSL_client_methodv23)
731 - A ciphersuite is used that does not require additional random data from
732 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
734 If the handshake succeeds then the client random that has been used will
735 have been generated from a PRNG with insufficient entropy and therefore the
736 output may be predictable.
738 For example using the following command with an unseeded openssl will
739 succeed on an unpatched platform:
741 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
745 *) Use After Free following d2i_ECPrivatekey error fix
747 A malformed EC private key file consumed via the d2i_ECPrivateKey function
748 could cause a use after free condition. This, in turn, could cause a double
749 free in several private key parsing functions (such as d2i_PrivateKey
750 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
751 for applications that receive EC private keys from untrusted
752 sources. This scenario is considered rare.
754 This issue was discovered by the BoringSSL project and fixed in their
759 *) X509_to_X509_REQ NULL pointer deref fix
761 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
762 the certificate key is invalid. This function is rarely used in practice.
764 This issue was discovered by Brian Carpenter.
768 *) Removed the export ciphers from the DEFAULT ciphers
771 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
773 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
774 ARMv5 through ARMv8, as opposite to "locking" it to single one.
775 So far those who have to target multiple plaforms would compromise
776 and argue that binary targeting say ARMv5 would still execute on
777 ARMv8. "Universal" build resolves this compromise by providing
778 near-optimal performance even on newer platforms.
781 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
782 (other platforms pending).
783 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
785 *) Add support for the SignedCertificateTimestampList certificate and
786 OCSP response extensions from RFC6962.
789 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
790 for corner cases. (Certain input points at infinity could lead to
791 bogus results, with non-infinity inputs mapped to infinity too.)
794 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
795 This covers AES, SHA256/512 and GHASH. "Initial" means that most
796 common cases are optimized and there still is room for further
797 improvements. Vector Permutation AES for Altivec is also added.
800 *) Add support for little-endian ppc64 Linux target.
801 [Marcelo Cerri (IBM)]
803 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
804 SHA1, SHA256 and GHASH. "Initial" means that most common cases
805 are optimized and there still is room for further improvements.
806 Both 32- and 64-bit modes are supported.
807 [Andy Polyakov, Ard Biesheuvel (Linaro)]
809 *) Improved ARMv7 NEON support.
812 *) Support for SPARC Architecture 2011 crypto extensions, first
813 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
814 SHA256/512, MD5, GHASH and modular exponentiation.
815 [Andy Polyakov, David Miller]
817 *) Accelerated modular exponentiation for Intel processors, a.k.a.
819 [Shay Gueron & Vlad Krasnov (Intel Corp)]
821 *) Support for new and upcoming Intel processors, including AVX2,
822 BMI and SHA ISA extensions. This includes additional "stitched"
823 implementations, AESNI-SHA256 and GCM, and multi-buffer support
826 This work was sponsored by Intel Corp.
829 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
830 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
831 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
834 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
835 this fixes a limiation in previous versions of OpenSSL.
838 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
839 MGF1 digest and OAEP label.
842 *) Add EVP support for key wrapping algorithms, to avoid problems with
843 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
844 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
845 algorithms and include tests cases.
848 *) Add functions to allocate and set the fields of an ECDSA_METHOD
850 [Douglas E. Engert, Steve Henson]
852 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
853 difference in days and seconds between two tm or ASN1_TIME structures.
856 *) Add -rev test option to s_server to just reverse order of characters
857 received by client and send back to server. Also prints an abbreviated
858 summary of the connection parameters.
861 *) New option -brief for s_client and s_server to print out a brief summary
862 of connection parameters.
865 *) Add callbacks for arbitrary TLS extensions.
866 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
868 *) New option -crl_download in several openssl utilities to download CRLs
869 from CRLDP extension in certificates.
872 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
875 *) New function X509_CRL_diff to generate a delta CRL from the difference
876 of two full CRLs. Add support to "crl" utility.
879 *) New functions to set lookup_crls function and to retrieve
880 X509_STORE from X509_STORE_CTX.
883 *) Print out deprecated issuer and subject unique ID fields in
887 *) Extend OCSP I/O functions so they can be used for simple general purpose
888 HTTP as well as OCSP. New wrapper function which can be used to download
889 CRLs using the OCSP API.
892 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
895 *) SSL_CONF* functions. These provide a common framework for application
896 configuration using configuration files or command lines.
899 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
900 message callback and prints the results. Needs compile time option
901 "enable-ssl-trace". New options to s_client and s_server to enable
905 *) New ctrl and macro to retrieve supported points extensions.
906 Print out extension in s_server and s_client.
909 *) New functions to retrieve certificate signature and signature
913 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
917 *) New Suite B modes for TLS code. These use and enforce the requirements
918 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
919 only use Suite B curves. The Suite B modes can be set by using the
920 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
923 *) New chain verification flags for Suite B levels of security. Check
924 algorithms are acceptable when flags are set in X509_verify_cert.
927 *) Make tls1_check_chain return a set of flags indicating checks passed
928 by a certificate chain. Add additional tests to handle client
929 certificates: checks for matching certificate type and issuer name
933 *) If an attempt is made to use a signature algorithm not in the peer
934 preference list abort the handshake. If client has no suitable
935 signature algorithms in response to a certificate request do not
939 *) If server EC tmp key is not in client preference list abort handshake.
942 *) Add support for certificate stores in CERT structure. This makes it
943 possible to have different stores per SSL structure or one store in
944 the parent SSL_CTX. Include distint stores for certificate chain
945 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
946 to build and store a certificate chain in CERT structure: returing
947 an error if the chain cannot be built: this will allow applications
948 to test if a chain is correctly configured.
950 Note: if the CERT based stores are not set then the parent SSL_CTX
951 store is used to retain compatibility with existing behaviour.
955 *) New function ssl_set_client_disabled to set a ciphersuite disabled
956 mask based on the current session, check mask when sending client
957 hello and checking the requested ciphersuite.
960 *) New ctrls to retrieve and set certificate types in a certificate
961 request message. Print out received values in s_client. If certificate
962 types is not set with custom values set sensible values based on
963 supported signature algorithms.
966 *) Support for distinct client and server supported signature algorithms.
969 *) Add certificate callback. If set this is called whenever a certificate
970 is required by client or server. An application can decide which
971 certificate chain to present based on arbitrary criteria: for example
972 supported signature algorithms. Add very simple example to s_server.
973 This fixes many of the problems and restrictions of the existing client
974 certificate callback: for example you can now clear an existing
975 certificate and specify the whole chain.
978 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
979 the certificate can be used for (if anything). Set valid_flags field
980 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
981 to have similar checks in it.
983 Add new "cert_flags" field to CERT structure and include a "strict mode".
984 This enforces some TLS certificate requirements (such as only permitting
985 certificate signature algorithms contained in the supported algorithms
986 extension) which some implementations ignore: this option should be used
987 with caution as it could cause interoperability issues.
990 *) Update and tidy signature algorithm extension processing. Work out
991 shared signature algorithms based on preferences and peer algorithms
992 and print them out in s_client and s_server. Abort handshake if no
993 shared signature algorithms.
996 *) Add new functions to allow customised supported signature algorithms
997 for SSL and SSL_CTX structures. Add options to s_client and s_server
1001 *) New function SSL_certs_clear() to delete all references to certificates
1002 from an SSL structure. Before this once a certificate had been added
1003 it couldn't be removed.
1006 *) Integrate hostname, email address and IP address checking with certificate
1007 verification. New verify options supporting checking in opensl utility.
1010 *) Fixes and wildcard matching support to hostname and email checking
1011 functions. Add manual page.
1012 [Florian Weimer (Red Hat Product Security Team)]
1014 *) New functions to check a hostname email or IP address against a
1015 certificate. Add options x509 utility to print results of checks against
1019 *) Fix OCSP checking.
1020 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
1022 *) Initial experimental support for explicitly trusted non-root CAs.
1023 OpenSSL still tries to build a complete chain to a root but if an
1024 intermediate CA has a trust setting included that is used. The first
1025 setting is used: whether to trust (e.g., -addtrust option to the x509
1029 *) Add -trusted_first option which attempts to find certificates in the
1030 trusted store even if an untrusted chain is also supplied.
1033 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
1034 platform support for Linux and Android.
1037 *) Support for linux-x32, ILP32 environment in x86_64 framework.
1040 *) Experimental multi-implementation support for FIPS capable OpenSSL.
1041 When in FIPS mode the approved implementations are used as normal,
1042 when not in FIPS mode the internal unapproved versions are used instead.
1043 This means that the FIPS capable OpenSSL isn't forced to use the
1044 (often lower performance) FIPS implementations outside FIPS mode.
1047 *) Transparently support X9.42 DH parameters when calling
1048 PEM_read_bio_DHparameters. This means existing applications can handle
1049 the new parameter format automatically.
1052 *) Initial experimental support for X9.42 DH parameter format: mainly
1053 to support use of 'q' parameter for RFC5114 parameters.
1056 *) Add DH parameters from RFC5114 including test data to dhtest.
1059 *) Support for automatic EC temporary key parameter selection. If enabled
1060 the most preferred EC parameters are automatically used instead of
1061 hardcoded fixed parameters. Now a server just has to call:
1062 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
1063 support ECDH and use the most appropriate parameters.
1066 *) Enhance and tidy EC curve and point format TLS extension code. Use
1067 static structures instead of allocation if default values are used.
1068 New ctrls to set curves we wish to support and to retrieve shared curves.
1069 Print out shared curves in s_server. New options to s_server and s_client
1070 to set list of supported curves.
1073 *) New ctrls to retrieve supported signature algorithms and
1074 supported curve values as an array of NIDs. Extend openssl utility
1075 to print out received values.
1078 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
1079 between NIDs and the more common NIST names such as "P-256". Enhance
1080 ecparam utility and ECC method to recognise the NIST names for curves.
1083 *) Enhance SSL/TLS certificate chain handling to support different
1084 chains for each certificate instead of one chain in the parent SSL_CTX.
1087 *) Support for fixed DH ciphersuite client authentication: where both
1088 server and client use DH certificates with common parameters.
1091 *) Support for fixed DH ciphersuites: those requiring DH server
1095 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
1097 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
1098 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
1099 X509_CINF_get_signature were reverted post internal team review.
1101 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
1103 *) Build fixes for the Windows and OpenVMS platforms
1104 [Matt Caswell and Richard Levitte]
1106 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
1108 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
1109 message can cause a segmentation fault in OpenSSL due to a NULL pointer
1110 dereference. This could lead to a Denial Of Service attack. Thanks to
1111 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
1115 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
1116 dtls1_buffer_record function under certain conditions. In particular this
1117 could occur if an attacker sent repeated DTLS records with the same
1118 sequence number but for the next epoch. The memory leak could be exploited
1119 by an attacker in a Denial of Service attack through memory exhaustion.
1120 Thanks to Chris Mueller for reporting this issue.
1124 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
1125 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
1126 method would be set to NULL which could later result in a NULL pointer
1127 dereference. Thanks to Frank Schmirler for reporting this issue.
1131 *) Abort handshake if server key exchange message is omitted for ephemeral
1134 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
1135 reporting this issue.
1139 *) Remove non-export ephemeral RSA code on client and server. This code
1140 violated the TLS standard by allowing the use of temporary RSA keys in
1141 non-export ciphersuites and could be used by a server to effectively
1142 downgrade the RSA key length used to a value smaller than the server
1143 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
1144 INRIA or reporting this issue.
1148 *) Fixed issue where DH client certificates are accepted without verification.
1149 An OpenSSL server will accept a DH certificate for client authentication
1150 without the certificate verify message. This effectively allows a client to
1151 authenticate without the use of a private key. This only affects servers
1152 which trust a client certificate authority which issues certificates
1153 containing DH keys: these are extremely rare and hardly ever encountered.
1154 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
1159 *) Ensure that the session ID context of an SSL is updated when its
1160 SSL_CTX is updated via SSL_set_SSL_CTX.
1162 The session ID context is typically set from the parent SSL_CTX,
1163 and can vary with the CTX.
1166 *) Fix various certificate fingerprint issues.
1168 By using non-DER or invalid encodings outside the signed portion of a
1169 certificate the fingerprint can be changed without breaking the signature.
1170 Although no details of the signed portion of the certificate can be changed
1171 this can cause problems with some applications: e.g. those using the
1172 certificate fingerprint for blacklists.
1174 1. Reject signatures with non zero unused bits.
1176 If the BIT STRING containing the signature has non zero unused bits reject
1177 the signature. All current signature algorithms require zero unused bits.
1179 2. Check certificate algorithm consistency.
1181 Check the AlgorithmIdentifier inside TBS matches the one in the
1182 certificate signature. NB: this will result in signature failure
1183 errors for some broken certificates.
1185 Thanks to Konrad Kraszewski from Google for reporting this issue.
1187 3. Check DSA/ECDSA signatures use DER.
1189 Reencode DSA/ECDSA signatures and compare with the original received
1190 signature. Return an error if there is a mismatch.
1192 This will reject various cases including garbage after signature
1193 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
1194 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
1195 (negative or with leading zeroes).
1197 Further analysis was conducted and fixes were developed by Stephen Henson
1198 of the OpenSSL core team.
1203 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
1204 results on some platforms, including x86_64. This bug occurs at random
1205 with a very low probability, and is not known to be exploitable in any
1206 way, though its exact impact is difficult to determine. Thanks to Pieter
1207 Wuille (Blockstream) who reported this issue and also suggested an initial
1208 fix. Further analysis was conducted by the OpenSSL development team and
1209 Adam Langley of Google. The final fix was developed by Andy Polyakov of
1210 the OpenSSL core team.
1214 *) Do not resume sessions on the server if the negotiated protocol
1215 version does not match the session's version. Resuming with a different
1216 version, while not strictly forbidden by the RFC, is of questionable
1217 sanity and breaks all known clients.
1218 [David Benjamin, Emilia Käsper]
1220 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
1221 early CCS messages during renegotiation. (Note that because
1222 renegotiation is encrypted, this early CCS was not exploitable.)
1225 *) Tighten client-side session ticket handling during renegotiation:
1226 ensure that the client only accepts a session ticket if the server sends
1227 the extension anew in the ServerHello. Previously, a TLS client would
1228 reuse the old extension state and thus accept a session ticket if one was
1229 announced in the initial ServerHello.
1231 Similarly, ensure that the client requires a session ticket if one
1232 was advertised in the ServerHello. Previously, a TLS client would
1233 ignore a missing NewSessionTicket message.
1236 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
1238 *) SRTP Memory Leak.
1240 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
1241 sends a carefully crafted handshake message, to cause OpenSSL to fail
1242 to free up to 64k of memory causing a memory leak. This could be
1243 exploited in a Denial Of Service attack. This issue affects OpenSSL
1244 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
1245 whether SRTP is used or configured. Implementations of OpenSSL that
1246 have been compiled with OPENSSL_NO_SRTP defined are not affected.
1248 The fix was developed by the OpenSSL team.
1252 *) Session Ticket Memory Leak.
1254 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
1255 integrity of that ticket is first verified. In the event of a session
1256 ticket integrity check failing, OpenSSL will fail to free memory
1257 causing a memory leak. By sending a large number of invalid session
1258 tickets an attacker could exploit this issue in a Denial Of Service
1263 *) Build option no-ssl3 is incomplete.
1265 When OpenSSL is configured with "no-ssl3" as a build option, servers
1266 could accept and complete a SSL 3.0 handshake, and clients could be
1267 configured to send them.
1269 [Akamai and the OpenSSL team]
1271 *) Add support for TLS_FALLBACK_SCSV.
1272 Client applications doing fallback retries should call
1273 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
1275 [Adam Langley, Bodo Moeller]
1277 *) Add additional DigestInfo checks.
1279 Reencode DigestInto in DER and check against the original when
1280 verifying RSA signature: this will reject any improperly encoded
1281 DigestInfo structures.
1283 Note: this is a precautionary measure and no attacks are currently known.
1287 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
1289 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
1290 SRP code can be overrun an internal buffer. Add sanity check that
1291 g, A, B < N to SRP code.
1293 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
1294 Group for discovering this issue.
1298 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
1299 TLS 1.0 instead of higher protocol versions when the ClientHello message
1300 is badly fragmented. This allows a man-in-the-middle attacker to force a
1301 downgrade to TLS 1.0 even if both the server and the client support a
1302 higher protocol version, by modifying the client's TLS records.
1304 Thanks to David Benjamin and Adam Langley (Google) for discovering and
1305 researching this issue.
1309 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
1310 to a denial of service attack. A malicious server can crash the client
1311 with a null pointer dereference (read) by specifying an anonymous (EC)DH
1312 ciphersuite and sending carefully crafted handshake messages.
1314 Thanks to Felix Gröbert (Google) for discovering and researching this
1319 *) By sending carefully crafted DTLS packets an attacker could cause openssl
1320 to leak memory. This can be exploited through a Denial of Service attack.
1321 Thanks to Adam Langley for discovering and researching this issue.
1325 *) An attacker can force openssl to consume large amounts of memory whilst
1326 processing DTLS handshake messages. This can be exploited through a
1327 Denial of Service attack.
1328 Thanks to Adam Langley for discovering and researching this issue.
1332 *) An attacker can force an error condition which causes openssl to crash
1333 whilst processing DTLS packets due to memory being freed twice. This
1334 can be exploited through a Denial of Service attack.
1335 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
1340 *) If a multithreaded client connects to a malicious server using a resumed
1341 session and the server sends an ec point format extension it could write
1342 up to 255 bytes to freed memory.
1344 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
1349 *) A malicious server can crash an OpenSSL client with a null pointer
1350 dereference (read) by specifying an SRP ciphersuite even though it was not
1351 properly negotiated with the client. This can be exploited through a
1352 Denial of Service attack.
1354 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
1355 discovering and researching this issue.
1359 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
1360 X509_name_oneline, X509_name_print_ex et al. to leak some information
1361 from the stack. Applications may be affected if they echo pretty printing
1362 output to the attacker.
1364 Thanks to Ivan Fratric (Google) for discovering this issue.
1366 [Emilia Käsper, and Steve Henson]
1368 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1369 for corner cases. (Certain input points at infinity could lead to
1370 bogus results, with non-infinity inputs mapped to infinity too.)
1373 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
1375 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
1376 handshake can force the use of weak keying material in OpenSSL
1377 SSL/TLS clients and servers.
1379 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
1380 researching this issue. (CVE-2014-0224)
1381 [KIKUCHI Masashi, Steve Henson]
1383 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
1384 OpenSSL DTLS client the code can be made to recurse eventually crashing
1387 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
1389 [Imre Rad, Steve Henson]
1391 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
1392 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
1393 client or server. This is potentially exploitable to run arbitrary
1394 code on a vulnerable client or server.
1396 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
1397 [Jüri Aedla, Steve Henson]
1399 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
1400 are subject to a denial of service attack.
1402 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
1403 this issue. (CVE-2014-3470)
1404 [Felix Gröbert, Ivan Fratric, Steve Henson]
1406 *) Harmonize version and its documentation. -f flag is used to display
1408 [mancha <mancha1@zoho.com>]
1410 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1411 in i2d_ECPrivateKey.
1412 [mancha <mancha1@zoho.com>]
1414 *) Fix some double frees. These are not thought to be exploitable.
1415 [mancha <mancha1@zoho.com>]
1417 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
1419 *) A missing bounds check in the handling of the TLS heartbeat extension
1420 can be used to reveal up to 64k of memory to a connected client or
1423 Thanks for Neel Mehta of Google Security for discovering this bug and to
1424 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1425 preparing the fix (CVE-2014-0160)
1426 [Adam Langley, Bodo Moeller]
1428 *) Fix for the attack described in the paper "Recovering OpenSSL
1429 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1430 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1431 http://eprint.iacr.org/2014/140
1433 Thanks to Yuval Yarom and Naomi Benger for discovering this
1434 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1435 [Yuval Yarom and Naomi Benger]
1437 *) TLS pad extension: draft-agl-tls-padding-03
1439 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
1440 TLS client Hello record length value would otherwise be > 255 and
1441 less that 512 pad with a dummy extension containing zeroes so it
1442 is at least 512 bytes long.
1444 [Adam Langley, Steve Henson]
1446 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
1448 *) Fix for TLS record tampering bug. A carefully crafted invalid
1449 handshake could crash OpenSSL with a NULL pointer exception.
1450 Thanks to Anton Johansson for reporting this issues.
1453 *) Keep original DTLS digest and encryption contexts in retransmission
1454 structures so we can use the previous session parameters if they need
1455 to be resent. (CVE-2013-6450)
1458 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
1459 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
1460 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
1461 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
1462 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
1463 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
1464 [Rob Stradling, Adam Langley]
1466 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
1468 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
1469 supporting platforms or when small records were transferred.
1470 [Andy Polyakov, Steve Henson]
1472 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
1474 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1476 This addresses the flaw in CBC record processing discovered by
1477 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1478 at: http://www.isg.rhul.ac.uk/tls/
1480 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1481 Security Group at Royal Holloway, University of London
1482 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1483 Emilia Käsper for the initial patch.
1485 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1487 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
1488 ciphersuites which can be exploited in a denial of service attack.
1489 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
1490 and detecting this bug and to Wolfgang Ettlinger
1491 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
1495 *) Return an error when checking OCSP signatures when key is NULL.
1496 This fixes a DoS attack. (CVE-2013-0166)
1499 *) Make openssl verify return errors.
1500 [Chris Palmer <palmer@google.com> and Ben Laurie]
1502 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1503 the right response is stapled. Also change SSL_get_certificate()
1504 so it returns the certificate actually sent.
1505 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1506 [Rob Stradling <rob.stradling@comodo.com>]
1508 *) Fix possible deadlock when decoding public keys.
1511 *) Don't use TLS 1.0 record version number in initial client hello
1515 Changes between 1.0.1b and 1.0.1c [10 May 2012]
1517 *) Sanity check record length before skipping explicit IV in TLS
1518 1.2, 1.1 and DTLS to fix DoS attack.
1520 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1521 fuzzing as a service testing platform.
1525 *) Initialise tkeylen properly when encrypting CMS messages.
1526 Thanks to Solar Designer of Openwall for reporting this issue.
1529 *) In FIPS mode don't try to use composite ciphers as they are not
1533 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
1535 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
1536 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
1537 mean any application compiled against OpenSSL 1.0.0 headers setting
1538 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
1539 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
1540 0x10000000L Any application which was previously compiled against
1541 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
1542 will need to be recompiled as a result. Letting be results in
1543 inability to disable specifically TLS 1.1 and in client context,
1544 in unlike event, limit maximum offered version to TLS 1.0 [see below].
1547 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
1548 disable just protocol X, but all protocols above X *if* there are
1549 protocols *below* X still enabled. In more practical terms it means
1550 that if application wants to disable TLS1.0 in favor of TLS1.1 and
1551 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
1552 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
1556 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
1558 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1559 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1560 in CRYPTO_realloc_clean.
1562 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1563 issue and to Adam Langley <agl@chromium.org> for fixing it.
1565 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1567 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
1570 *) Workarounds for some broken servers that "hang" if a client hello
1571 record length exceeds 255 bytes.
1573 1. Do not use record version number > TLS 1.0 in initial client
1574 hello: some (but not all) hanging servers will now work.
1575 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
1576 the number of ciphers sent in the client hello. This should be
1577 set to an even number, such as 50, for example by passing:
1578 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
1579 Most broken servers should now work.
1580 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
1581 TLS 1.2 client support entirely.
1584 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
1587 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
1589 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
1590 STRING form instead of a DigestInfo.
1593 *) The format used for MDC2 RSA signatures is inconsistent between EVP
1594 and the RSA_sign/RSA_verify functions. This was made more apparent when
1595 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
1596 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
1597 the correct format in RSA_verify so both forms transparently work.
1600 *) Some servers which support TLS 1.0 can choke if we initially indicate
1601 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
1602 encrypted premaster secret. As a workaround use the maximum permitted
1603 client version in client hello, this should keep such servers happy
1604 and still work with previous versions of OpenSSL.
1607 *) Add support for TLS/DTLS heartbeats.
1608 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1610 *) Add support for SCTP.
1611 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1613 *) Improved PRNG seeding for VOS.
1614 [Paul Green <Paul.Green@stratus.com>]
1616 *) Extensive assembler packs updates, most notably:
1618 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
1619 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
1620 - x86_64: bit-sliced AES implementation;
1621 - ARM: NEON support, contemporary platforms optimizations;
1622 - s390x: z196 support;
1623 - *: GHASH and GF(2^m) multiplication implementations;
1627 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
1628 (removal of unnecessary code)
1629 [Peter Sylvester <peter.sylvester@edelweb.fr>]
1631 *) Add TLS key material exporter from RFC 5705.
1634 *) Add DTLS-SRTP negotiation from RFC 5764.
1637 *) Add Next Protocol Negotiation,
1638 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
1639 disabled with a no-npn flag to config or Configure. Code donated
1641 [Adam Langley <agl@google.com> and Ben Laurie]
1643 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
1644 NIST-P256, NIST-P521, with constant-time single point multiplication on
1645 typical inputs. Compiler support for the nonstandard type __uint128_t is
1646 required to use this (present in gcc 4.4 and later, for 64-bit builds).
1647 Code made available under Apache License version 2.0.
1649 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
1650 line to include this in your build of OpenSSL, and run "make depend" (or
1651 "make update"). This enables the following EC_METHODs:
1653 EC_GFp_nistp224_method()
1654 EC_GFp_nistp256_method()
1655 EC_GFp_nistp521_method()
1657 EC_GROUP_new_by_curve_name() will automatically use these (while
1658 EC_GROUP_new_curve_GFp() currently prefers the more flexible
1660 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
1662 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
1663 all platforms. Move ssize_t definition from e_os.h to the public
1664 header file e_os2.h as it now appears in public header file cms.h
1667 *) New -sigopt option to the ca, req and x509 utilities. Additional
1668 signature parameters can be passed using this option and in
1672 *) Add RSA PSS signing function. This will generate and set the
1673 appropriate AlgorithmIdentifiers for PSS based on those in the
1674 corresponding EVP_MD_CTX structure. No application support yet.
1677 *) Support for companion algorithm specific ASN1 signing routines.
1678 New function ASN1_item_sign_ctx() signs a pre-initialised
1679 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
1680 the appropriate parameters.
1683 *) Add new algorithm specific ASN1 verification initialisation function
1684 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
1685 handling will be the same no matter what EVP_PKEY_METHOD is used.
1686 Add a PSS handler to support verification of PSS signatures: checked
1687 against a number of sample certificates.
1690 *) Add signature printing for PSS. Add PSS OIDs.
1691 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
1693 *) Add algorithm specific signature printing. An individual ASN1 method
1694 can now print out signatures instead of the standard hex dump.
1696 More complex signatures (e.g. PSS) can print out more meaningful
1697 information. Include DSA version that prints out the signature
1701 *) Password based recipient info support for CMS library: implementing
1705 *) Split password based encryption into PBES2 and PBKDF2 functions. This
1706 neatly separates the code into cipher and PBE sections and is required
1707 for some algorithms that split PBES2 into separate pieces (such as
1708 password based CMS).
1711 *) Session-handling fixes:
1712 - Fix handling of connections that are resuming with a session ID,
1713 but also support Session Tickets.
1714 - Fix a bug that suppressed issuing of a new ticket if the client
1715 presented a ticket with an expired session.
1716 - Try to set the ticket lifetime hint to something reasonable.
1717 - Make tickets shorter by excluding irrelevant information.
1718 - On the client side, don't ignore renewed tickets.
1719 [Adam Langley, Bodo Moeller (Google)]
1721 *) Fix PSK session representation.
1724 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
1726 This work was sponsored by Intel.
1729 *) Add GCM support to TLS library. Some custom code is needed to split
1730 the IV between the fixed (from PRF) and explicit (from TLS record)
1731 portions. This adds all GCM ciphersuites supported by RFC5288 and
1732 RFC5289. Generalise some AES* cipherstrings to include GCM and
1733 add a special AESGCM string for GCM only.
1736 *) Expand range of ctrls for AES GCM. Permit setting invocation
1737 field on decrypt and retrieval of invocation field only on encrypt.
1740 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
1741 As required by RFC5289 these ciphersuites cannot be used if for
1742 versions of TLS earlier than 1.2.
1745 *) For FIPS capable OpenSSL interpret a NULL default public key method
1746 as unset and return the appropriate default but do *not* set the default.
1747 This means we can return the appropriate method in applications that
1748 switch between FIPS and non-FIPS modes.
1751 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
1752 ENGINE is used then we cannot handle that in the FIPS module so we
1753 keep original code iff non-FIPS operations are allowed.
1756 *) Add -attime option to openssl utilities.
1757 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
1759 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
1762 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
1763 FIPS EC methods unconditionally for now.
1766 *) New build option no-ec2m to disable characteristic 2 code.
1769 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
1770 all cases can be covered as some introduce binary incompatibilities.
1773 *) Redirect RSA operations to FIPS module including keygen,
1774 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
1777 *) Add similar low level API blocking to ciphers.
1780 *) Low level digest APIs are not approved in FIPS mode: any attempt
1781 to use these will cause a fatal error. Applications that *really* want
1782 to use them can use the private_* version instead.
1785 *) Redirect cipher operations to FIPS module for FIPS builds.
1788 *) Redirect digest operations to FIPS module for FIPS builds.
1791 *) Update build system to add "fips" flag which will link in fipscanister.o
1792 for static and shared library builds embedding a signature if needed.
1795 *) Output TLS supported curves in preference order instead of numerical
1796 order. This is currently hardcoded for the highest order curves first.
1797 This should be configurable so applications can judge speed vs strength.
1800 *) Add TLS v1.2 server support for client authentication.
1803 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
1807 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
1808 FIPS modules versions.
1811 *) Add TLS v1.2 client side support for client authentication. Keep cache
1812 of handshake records longer as we don't know the hash algorithm to use
1813 until after the certificate request message is received.
1816 *) Initial TLS v1.2 client support. Add a default signature algorithms
1817 extension including all the algorithms we support. Parse new signature
1818 format in client key exchange. Relax some ECC signing restrictions for
1819 TLS v1.2 as indicated in RFC5246.
1822 *) Add server support for TLS v1.2 signature algorithms extension. Switch
1823 to new signature format when needed using client digest preference.
1824 All server ciphersuites should now work correctly in TLS v1.2. No client
1825 support yet and no support for client certificates.
1828 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
1829 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
1830 ciphersuites. At present only RSA key exchange ciphersuites work with
1831 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
1832 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
1833 and version checking.
1836 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
1837 with this defined it will not be affected by any changes to ssl internal
1838 structures. Add several utility functions to allow openssl application
1839 to work with OPENSSL_NO_SSL_INTERN defined.
1843 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
1845 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
1848 *) Permit abbreviated handshakes when renegotiating using the function
1849 SSL_renegotiate_abbreviated().
1850 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1852 *) Add call to ENGINE_register_all_complete() to
1853 ENGINE_load_builtin_engines(), so some implementations get used
1854 automatically instead of needing explicit application support.
1857 *) Add support for TLS key exporter as described in RFC5705.
1858 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
1860 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
1861 a few changes are required:
1863 Add SSL_OP_NO_TLSv1_1 flag.
1864 Add TLSv1_1 methods.
1865 Update version checking logic to handle version 1.1.
1866 Add explicit IV handling (ported from DTLS code).
1867 Add command line options to s_client/s_server.
1870 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1872 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1873 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1874 content decryption and always return the same error. Note: this attack
1875 needs on average 2^20 messages so it only affects automated senders. The
1876 old behaviour can be reenabled in the CMS code by setting the
1877 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1878 an MMA defence is not necessary.
1879 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1880 this issue. (CVE-2012-0884)
1883 *) Fix CVE-2011-4619: make sure we really are receiving a
1884 client hello before rejecting multiple SGC restarts. Thanks to
1885 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1888 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1890 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1891 Thanks to Antonio Martin, Enterprise Secure Access Research and
1892 Development, Cisco Systems, Inc. for discovering this bug and
1893 preparing a fix. (CVE-2012-0050)
1896 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1898 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1899 of the Vaudenay padding oracle attack on CBC mode encryption
1900 which enables an efficient plaintext recovery attack against
1901 the OpenSSL implementation of DTLS. Their attack exploits timing
1902 differences arising during decryption processing. A research
1903 paper describing this attack can be found at:
1904 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1905 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1906 Security Group at Royal Holloway, University of London
1907 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1908 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1909 for preparing the fix. (CVE-2011-4108)
1910 [Robin Seggelmann, Michael Tuexen]
1912 *) Clear bytes used for block padding of SSL 3.0 records.
1914 [Adam Langley (Google)]
1916 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1917 Kadianakis <desnacked@gmail.com> for discovering this issue and
1918 Adam Langley for preparing the fix. (CVE-2011-4619)
1919 [Adam Langley (Google)]
1921 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1922 [Andrey Kulikov <amdeich@gmail.com>]
1924 *) Prevent malformed RFC3779 data triggering an assertion failure.
1925 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1926 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1927 [Rob Austein <sra@hactrn.net>]
1929 *) Improved PRNG seeding for VOS.
1930 [Paul Green <Paul.Green@stratus.com>]
1932 *) Fix ssl_ciph.c set-up race.
1933 [Adam Langley (Google)]
1935 *) Fix spurious failures in ecdsatest.c.
1936 [Emilia Käsper (Google)]
1938 *) Fix the BIO_f_buffer() implementation (which was mixing different
1939 interpretations of the '..._len' fields).
1940 [Adam Langley (Google)]
1942 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1943 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1944 threads won't reuse the same blinding coefficients.
1946 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1947 lock to call BN_BLINDING_invert_ex, and avoids one use of
1948 BN_BLINDING_update for each BN_BLINDING structure (previously,
1949 the last update always remained unused).
1950 [Emilia Käsper (Google)]
1952 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1953 [Bob Buckholz (Google)]
1955 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1957 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1958 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1959 [Kaspar Brand <ossl@velox.ch>]
1961 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1962 for multi-threaded use of ECDH. (CVE-2011-3210)
1963 [Adam Langley (Google)]
1965 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1968 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1969 signature public key algorithm by using OID xref utilities instead.
1970 Before this you could only use some ECC ciphersuites with SHA1 only.
1973 *) Add protection against ECDSA timing attacks as mentioned in the paper
1974 by Billy Bob Brumley and Nicola Tuveri, see:
1976 http://eprint.iacr.org/2011/232.pdf
1978 [Billy Bob Brumley and Nicola Tuveri]
1980 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1982 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1983 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1985 *) Fix bug in string printing code: if *any* escaping is enabled we must
1986 escape the escape character (backslash) or the resulting string is
1990 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1992 *) Disable code workaround for ancient and obsolete Netscape browsers
1993 and servers: an attacker can use it in a ciphersuite downgrade attack.
1994 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1997 *) Fixed J-PAKE implementation error, originally discovered by
1998 Sebastien Martini, further info and confirmation from Stefan
1999 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2002 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
2004 *) Fix extension code to avoid race conditions which can result in a buffer
2005 overrun vulnerability: resumed sessions must not be modified as they can
2006 be shared by multiple threads. CVE-2010-3864
2009 *) Fix WIN32 build system to correctly link an ENGINE directory into
2013 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
2015 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
2017 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
2019 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
2021 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
2022 context. The operation can be customised via the ctrl mechanism in
2023 case ENGINEs want to include additional functionality.
2026 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
2029 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
2030 output hashes compatible with older versions of OpenSSL.
2031 [Willy Weisz <weisz@vcpc.univie.ac.at>]
2033 *) Fix compression algorithm handling: if resuming a session use the
2034 compression algorithm of the resumed session instead of determining
2035 it from client hello again. Don't allow server to change algorithm.
2038 *) Add load_crls() function to apps tidying load_certs() too. Add option
2039 to verify utility to allow additional CRLs to be included.
2042 *) Update OCSP request code to permit adding custom headers to the request:
2043 some responders need this.
2046 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
2048 [Julia Lawall <julia@diku.dk>]
2050 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
2051 needlessly dereferenced structures, used obsolete functions and
2052 didn't handle all updated verify codes correctly.
2055 *) Disable MD2 in the default configuration.
2058 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
2059 indicate the initial BIO being pushed or popped. This makes it possible
2060 to determine whether the BIO is the one explicitly called or as a result
2061 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
2062 it handles reference counts correctly and doesn't zero out the I/O bio
2063 when it is not being explicitly popped. WARNING: applications which
2064 included workarounds for the old buggy behaviour will need to be modified
2065 or they could free up already freed BIOs.
2068 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
2069 renaming to all platforms (within the 0.9.8 branch, this was
2070 done conditionally on Netware platforms to avoid a name clash).
2071 [Guenter <lists@gknw.net>]
2073 *) Add ECDHE and PSK support to DTLS.
2074 [Michael Tuexen <tuexen@fh-muenster.de>]
2076 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
2080 *) Add "missing" function EVP_MD_flags() (without this the only way to
2081 retrieve a digest flags is by accessing the structure directly. Update
2082 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
2083 or cipher is registered as in the "from" argument. Print out all
2084 registered digests in the dgst usage message instead of manually
2085 attempting to work them out.
2088 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
2089 this allows the use of compression and extensions. Change default cipher
2090 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
2091 by default unless an application cipher string requests it.
2094 *) Alter match criteria in PKCS12_parse(). It used to try to use local
2095 key ids to find matching certificates and keys but some PKCS#12 files
2096 don't follow the (somewhat unwritten) rules and this strategy fails.
2097 Now just gather all certificates together and the first private key
2098 then look for the first certificate that matches the key.
2101 *) Support use of registered digest and cipher names for dgst and cipher
2102 commands instead of having to add each one as a special case. So now
2109 openssl dgst -sha256 foo
2111 and this works for ENGINE based algorithms too.
2115 *) Update Gost ENGINE to support parameter files.
2116 [Victor B. Wagner <vitus@cryptocom.ru>]
2118 *) Support GeneralizedTime in ca utility.
2119 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
2121 *) Enhance the hash format used for certificate directory links. The new
2122 form uses the canonical encoding (meaning equivalent names will work
2123 even if they aren't identical) and uses SHA1 instead of MD5. This form
2124 is incompatible with the older format and as a result c_rehash should
2125 be used to rebuild symbolic links.
2128 *) Make PKCS#8 the default write format for private keys, replacing the
2129 traditional format. This form is standardised, more secure and doesn't
2130 include an implicit MD5 dependency.
2133 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
2134 committed to OpenSSL should pass this lot as a minimum.
2137 *) Add session ticket override functionality for use by EAP-FAST.
2138 [Jouni Malinen <j@w1.fi>]
2140 *) Modify HMAC functions to return a value. Since these can be implemented
2141 in an ENGINE errors can occur.
2144 *) Type-checked OBJ_bsearch_ex.
2147 *) Type-checked OBJ_bsearch. Also some constification necessitated
2148 by type-checking. Still to come: TXT_DB, bsearch(?),
2149 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
2153 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
2154 seconds to a tm structure directly, instead of going through OS
2155 specific date routines. This avoids any issues with OS routines such
2156 as the year 2038 bug. New *_adj() functions for ASN1 time structures
2157 and X509_time_adj_ex() to cover the extended range. The existing
2158 X509_time_adj() is still usable and will no longer have any date issues.
2161 *) Delta CRL support. New use deltas option which will attempt to locate
2162 and search any appropriate delta CRLs available.
2164 This work was sponsored by Google.
2167 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
2168 code and add additional score elements. Validate alternate CRL paths
2169 as part of the CRL checking and indicate a new error "CRL path validation
2170 error" in this case. Applications wanting additional details can use
2171 the verify callback and check the new "parent" field. If this is not
2172 NULL CRL path validation is taking place. Existing applications wont
2173 see this because it requires extended CRL support which is off by
2176 This work was sponsored by Google.
2179 *) Support for freshest CRL extension.
2181 This work was sponsored by Google.
2184 *) Initial indirect CRL support. Currently only supported in the CRLs
2185 passed directly and not via lookup. Process certificate issuer
2186 CRL entry extension and lookup CRL entries by bother issuer name
2187 and serial number. Check and process CRL issuer entry in IDP extension.
2189 This work was sponsored by Google.
2192 *) Add support for distinct certificate and CRL paths. The CRL issuer
2193 certificate is validated separately in this case. Only enabled if
2194 an extended CRL support flag is set: this flag will enable additional
2195 CRL functionality in future.
2197 This work was sponsored by Google.
2200 *) Add support for policy mappings extension.
2202 This work was sponsored by Google.
2205 *) Fixes to pathlength constraint, self issued certificate handling,
2206 policy processing to align with RFC3280 and PKITS tests.
2208 This work was sponsored by Google.
2211 *) Support for name constraints certificate extension. DN, email, DNS
2212 and URI types are currently supported.
2214 This work was sponsored by Google.
2217 *) To cater for systems that provide a pointer-based thread ID rather
2218 than numeric, deprecate the current numeric thread ID mechanism and
2219 replace it with a structure and associated callback type. This
2220 mechanism allows a numeric "hash" to be extracted from a thread ID in
2221 either case, and on platforms where pointers are larger than 'long',
2222 mixing is done to help ensure the numeric 'hash' is usable even if it
2223 can't be guaranteed unique. The default mechanism is to use "&errno"
2224 as a pointer-based thread ID to distinguish between threads.
2226 Applications that want to provide their own thread IDs should now use
2227 CRYPTO_THREADID_set_callback() to register a callback that will call
2228 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
2230 Note that ERR_remove_state() is now deprecated, because it is tied
2231 to the assumption that thread IDs are numeric. ERR_remove_state(0)
2232 to free the current thread's error state should be replaced by
2233 ERR_remove_thread_state(NULL).
2235 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
2236 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
2237 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
2238 application was previously providing a numeric thread callback that
2239 was inappropriate for distinguishing threads, then uniqueness might
2240 have been obtained with &errno that happened immediately in the
2241 intermediate development versions of OpenSSL; this is no longer the
2242 case, the numeric thread callback will now override the automatic use
2244 [Geoff Thorpe, with help from Bodo Moeller]
2246 *) Initial support for different CRL issuing certificates. This covers a
2247 simple case where the self issued certificates in the chain exist and
2248 the real CRL issuer is higher in the existing chain.
2250 This work was sponsored by Google.
2253 *) Removed effectively defunct crypto/store from the build.
2256 *) Revamp of STACK to provide stronger type-checking. Still to come:
2257 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
2258 ASN1_STRING, CONF_VALUE.
2261 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
2262 RAM on SSL connections. This option can save about 34k per idle SSL.
2265 *) Revamp of LHASH to provide stronger type-checking. Still to come:
2266 STACK, TXT_DB, bsearch, qsort.
2269 *) Initial support for Cryptographic Message Syntax (aka CMS) based
2270 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
2271 support for data, signedData, compressedData, digestedData and
2272 encryptedData, envelopedData types included. Scripts to check against
2273 RFC4134 examples draft and interop and consistency checks of many
2274 content types and variants.
2277 *) Add options to enc utility to support use of zlib compression BIO.
2280 *) Extend mk1mf to support importing of options and assembly language
2281 files from Configure script, currently only included in VC-WIN32.
2282 The assembly language rules can now optionally generate the source
2283 files from the associated perl scripts.
2286 *) Implement remaining functionality needed to support GOST ciphersuites.
2287 Interop testing has been performed using CryptoPro implementations.
2288 [Victor B. Wagner <vitus@cryptocom.ru>]
2290 *) s390x assembler pack.
2293 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
2297 *) Implement Opaque PRF Input TLS extension as specified in
2298 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
2299 official specification yet and no extension type assignment by
2300 IANA exists, this extension (for now) will have to be explicitly
2301 enabled when building OpenSSL by providing the extension number
2302 to use. For example, specify an option
2304 -DTLSEXT_TYPE_opaque_prf_input=0x9527
2306 to the "config" or "Configure" script to enable the extension,
2307 assuming extension number 0x9527 (which is a completely arbitrary
2308 and unofficial assignment based on the MD5 hash of the Internet
2309 Draft). Note that by doing so, you potentially lose
2310 interoperability with other TLS implementations since these might
2311 be using the same extension number for other purposes.
2313 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
2314 opaque PRF input value to use in the handshake. This will create
2315 an interal copy of the length-'len' string at 'src', and will
2316 return non-zero for success.
2318 To get more control and flexibility, provide a callback function
2321 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
2322 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
2326 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
2329 Callback function 'cb' will be called in handshakes, and is
2330 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
2331 Argument 'arg' is for application purposes (the value as given to
2332 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
2333 be provided to the callback function). The callback function
2334 has to return non-zero to report success: usually 1 to use opaque
2335 PRF input just if possible, or 2 to enforce use of the opaque PRF
2336 input. In the latter case, the library will abort the handshake
2337 if opaque PRF input is not successfully negotiated.
2339 Arguments 'peerinput' and 'len' given to the callback function
2340 will always be NULL and 0 in the case of a client. A server will
2341 see the client's opaque PRF input through these variables if
2342 available (NULL and 0 otherwise). Note that if the server
2343 provides an opaque PRF input, the length must be the same as the
2344 length of the client's opaque PRF input.
2346 Note that the callback function will only be called when creating
2347 a new session (session resumption can resume whatever was
2348 previously negotiated), and will not be called in SSL 2.0
2349 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
2350 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
2351 for applications that need to enforce opaque PRF input.
2355 *) Update ssl code to support digests other than SHA1+MD5 for handshake
2358 [Victor B. Wagner <vitus@cryptocom.ru>]
2360 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2361 RFC4507bis. The encrypted ticket format is an encrypted encoded
2362 SSL_SESSION structure, that way new session features are automatically
2365 If a client application caches session in an SSL_SESSION structure
2366 support is transparent because tickets are now stored in the encoded
2369 The SSL_CTX structure automatically generates keys for ticket
2370 protection in servers so again support should be possible
2371 with no application modification.
2373 If a client or server wishes to disable RFC4507 support then the option
2374 SSL_OP_NO_TICKET can be set.
2376 Add a TLS extension debugging callback to allow the contents of any client
2377 or server extensions to be examined.
2379 This work was sponsored by Google.
2382 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
2383 OpenSSL should now compile cleanly on gcc 4.2
2384 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
2386 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
2387 support including streaming MAC support: this is required for GOST
2388 ciphersuite support.
2389 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
2391 *) Add option -stream to use PKCS#7 streaming in smime utility. New
2392 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
2393 to output in BER and PEM format.
2396 *) Experimental support for use of HMAC via EVP_PKEY interface. This
2397 allows HMAC to be handled via the EVP_DigestSign*() interface. The
2398 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
2399 ENGINE support for HMAC keys which are unextractable. New -mac and
2400 -macopt options to dgst utility.
2403 *) New option -sigopt to dgst utility. Update dgst to use
2404 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
2405 alternative signing paramaters such as X9.31 or PSS in the dgst
2409 *) Change ssl_cipher_apply_rule(), the internal function that does
2410 the work each time a ciphersuite string requests enabling
2411 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
2412 removing ("!foo+bar") a class of ciphersuites: Now it maintains
2413 the order of disabled ciphersuites such that those ciphersuites
2414 that most recently went from enabled to disabled not only stay
2415 in order with respect to each other, but also have higher priority
2416 than other disabled ciphersuites the next time ciphersuites are
2419 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
2420 the same ciphersuites as with "HIGH" alone, but in a specific
2421 order where the PSK ciphersuites come first (since they are the
2422 most recently disabled ciphersuites when "HIGH" is parsed).
2424 Also, change ssl_create_cipher_list() (using this new
2425 funcionality) such that between otherwise identical
2426 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
2430 *) Change ssl_create_cipher_list() so that it automatically
2431 arranges the ciphersuites in reasonable order before starting
2432 to process the rule string. Thus, the definition for "DEFAULT"
2433 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
2434 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
2435 This makes it much easier to arrive at a reasonable default order
2436 in applications for which anonymous ciphers are OK (meaning
2437 that you can't actually use DEFAULT).
2438 [Bodo Moeller; suggested by Victor Duchovni]
2440 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
2441 processing) into multiple integers instead of setting
2442 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
2443 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
2444 (These masks as well as the individual bit definitions are hidden
2445 away into the non-exported interface ssl/ssl_locl.h, so this
2446 change to the definition of the SSL_CIPHER structure shouldn't
2447 affect applications.) This give us more bits for each of these
2448 categories, so there is no longer a need to coagulate AES128 and
2449 AES256 into a single algorithm bit, and to coagulate Camellia128
2450 and Camellia256 into a single algorithm bit, which has led to all
2453 Thus, among other things, the kludge introduced in 0.9.7m and
2454 0.9.8e for masking out AES256 independently of AES128 or masking
2455 out Camellia256 independently of AES256 is not needed here in 0.9.9.
2457 With the change, we also introduce new ciphersuite aliases that
2458 so far were missing: "AES128", "AES256", "CAMELLIA128", and
2462 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
2463 Use the leftmost N bytes of the signature input if the input is
2464 larger than the prime q (with N being the size in bytes of q).
2467 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
2468 it yet and it is largely untested.
2471 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
2474 *) Initial incomplete changes to avoid need for function casts in OpenSSL
2475 some compilers (gcc 4.2 and later) reject their use. Safestack is
2476 reimplemented. Update ASN1 to avoid use of legacy functions.
2479 *) Win32/64 targets are linked with Winsock2.
2482 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
2483 to external functions. This can be used to increase CRL handling
2484 efficiency especially when CRLs are very large by (for example) storing
2485 the CRL revoked certificates in a database.
2488 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
2489 new CRLs added to a directory can be used. New command line option
2490 -verify_return_error to s_client and s_server. This causes real errors
2491 to be returned by the verify callback instead of carrying on no matter
2492 what. This reflects the way a "real world" verify callback would behave.
2495 *) GOST engine, supporting several GOST algorithms and public key formats.
2496 Kindly donated by Cryptocom.
2499 *) Partial support for Issuing Distribution Point CRL extension. CRLs
2500 partitioned by DP are handled but no indirect CRL or reason partitioning
2501 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
2502 selected via a scoring technique which handles IDP and AKID in CRLs.
2505 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
2506 will ultimately be used for all verify operations: this will remove the
2507 X509_STORE dependency on certificate verification and allow alternative
2508 lookup methods. X509_STORE based implementations of these two callbacks.
2511 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
2512 Modify get_crl() to find a valid (unexpired) CRL if possible.
2515 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
2516 this would be called X509_CRL_cmp() but that name is already used by
2517 a function that just compares CRL issuer names. Cache several CRL
2518 extensions in X509_CRL structure and cache CRLDP in X509.
2521 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
2522 this maps equivalent X509_NAME structures into a consistent structure.
2523 Name comparison can then be performed rapidly using memcmp().
2526 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
2530 *) Allow digests to supply their own micalg string for S/MIME type using
2531 the ctrl EVP_MD_CTRL_MICALG.
2534 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
2535 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
2536 ctrl. It can then customise the structure before and/or after signing
2540 *) New function OBJ_add_sigid() to allow application defined signature OIDs
2541 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
2542 to free up any added signature OIDs.
2545 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
2546 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
2547 digest and cipher tables. New options added to openssl utility:
2548 list-message-digest-algorithms and list-cipher-algorithms.
2551 *) Change the array representation of binary polynomials: the list
2552 of degrees of non-zero coefficients is now terminated with -1.
2553 Previously it was terminated with 0, which was also part of the
2554 value; thus, the array representation was not applicable to
2555 polynomials where t^0 has coefficient zero. This change makes
2556 the array representation useful in a more general context.
2559 *) Various modifications and fixes to SSL/TLS cipher string
2560 handling. For ECC, the code now distinguishes between fixed ECDH
2561 with RSA certificates on the one hand and with ECDSA certificates
2562 on the other hand, since these are separate ciphersuites. The
2563 unused code for Fortezza ciphersuites has been removed.
2565 For consistency with EDH, ephemeral ECDH is now called "EECDH"
2566 (not "ECDHE"). For consistency with the code for DH
2567 certificates, use of ECDH certificates is now considered ECDH
2568 authentication, not RSA or ECDSA authentication (the latter is
2569 merely the CA's signing algorithm and not actively used in the
2572 The temporary ciphersuite alias "ECCdraft" is no longer
2573 available, and ECC ciphersuites are no longer excluded from "ALL"
2574 and "DEFAULT". The following aliases now exist for RFC 4492
2575 ciphersuites, most of these by analogy with the DH case:
2577 kECDHr - ECDH cert, signed with RSA
2578 kECDHe - ECDH cert, signed with ECDSA
2579 kECDH - ECDH cert (signed with either RSA or ECDSA)
2580 kEECDH - ephemeral ECDH
2581 ECDH - ECDH cert or ephemeral ECDH
2587 AECDH - anonymous ECDH
2588 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
2592 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
2593 Use correct micalg parameters depending on digest(s) in signed message.
2596 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
2597 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
2600 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
2601 an engine to register a method. Add ENGINE lookups for methods and
2602 functional reference processing.
2605 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
2606 EVP_{Sign,Verify}* which allow an application to customise the signature
2610 *) New -resign option to smime utility. This adds one or more signers
2611 to an existing PKCS#7 signedData structure. Also -md option to use an
2612 alternative message digest algorithm for signing.
2615 *) Tidy up PKCS#7 routines and add new functions to make it easier to
2616 create PKCS7 structures containing multiple signers. Update smime
2617 application to support multiple signers.
2620 *) New -macalg option to pkcs12 utility to allow setting of an alternative
2624 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
2625 Reorganize PBE internals to lookup from a static table using NIDs,
2626 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
2627 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
2628 PRF which will be automatically used with PBES2.
2631 *) Replace the algorithm specific calls to generate keys in "req" with the
2635 *) Update PKCS#7 enveloped data routines to use new API. This is now
2636 supported by any public key method supporting the encrypt operation. A
2637 ctrl is added to allow the public key algorithm to examine or modify
2638 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
2642 *) Add a ctrl to asn1 method to allow a public key algorithm to express
2643 a default digest type to use. In most cases this will be SHA1 but some
2644 algorithms (such as GOST) need to specify an alternative digest. The
2645 return value indicates how strong the preference is 1 means optional and
2646 2 is mandatory (that is it is the only supported type). Modify
2647 ASN1_item_sign() to accept a NULL digest argument to indicate it should
2648 use the default md. Update openssl utilities to use the default digest
2649 type for signing if it is not explicitly indicated.
2652 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
2653 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
2654 signing method from the key type. This effectively removes the link
2655 between digests and public key types.
2658 *) Add an OID cross reference table and utility functions. Its purpose is to
2659 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
2660 rsaEncryption. This will allow some of the algorithm specific hackery
2661 needed to use the correct OID to be removed.
2664 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
2665 structures for PKCS7_sign(). They are now set up by the relevant public
2669 *) Add provisional EC pkey method with support for ECDSA and ECDH.
2672 *) Add support for key derivation (agreement) in the API, DH method and
2676 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
2677 public and private key formats. As a side effect these add additional
2678 command line functionality not previously available: DSA signatures can be
2679 generated and verified using pkeyutl and DH key support and generation in
2684 [Oliver Tappe <zooey@hirschkaefer.de>]
2686 *) New make target "install_html_docs" installs HTML renditions of the
2688 [Oliver Tappe <zooey@hirschkaefer.de>]
2690 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
2691 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
2692 support key and parameter generation and add initial key generation
2693 functionality for RSA.
2696 *) Add functions for main EVP_PKEY_method operations. The undocumented
2697 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
2698 EVP_PKEY_{encrypt,decrypt}_old.
2701 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
2702 key API, doesn't do much yet.
2705 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
2706 public key algorithms. New option to openssl utility:
2707 "list-public-key-algorithms" to print out info.
2710 *) Implement the Supported Elliptic Curves Extension for
2711 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2714 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
2715 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
2718 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
2719 utilities such as rsa, dsa, dsaparam etc except they process any key
2723 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
2724 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
2725 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
2729 *) Initial support for pluggable public key ASN1.
2730 De-spaghettify the public key ASN1 handling. Move public and private
2731 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
2732 algorithm specific handling to a single module within the relevant
2733 algorithm directory. Add functions to allow (near) opaque processing
2734 of public and private key structures.
2737 *) Implement the Supported Point Formats Extension for
2738 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
2741 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
2742 for the psk identity [hint] and the psk callback functions to the
2743 SSL_SESSION, SSL and SSL_CTX structure.
2746 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
2750 SSL_CTX_use_psk_identity_hint
2751 SSL_get_psk_identity_hint
2752 SSL_get_psk_identity
2753 SSL_use_psk_identity_hint
2755 [Mika Kousa and Pasi Eronen of Nokia Corporation]
2757 *) Add RFC 3161 compliant time stamp request creation, response generation
2758 and response verification functionality.
2759 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
2761 *) Add initial support for TLS extensions, specifically for the server_name
2762 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2763 have new members for a host name. The SSL data structure has an
2764 additional member SSL_CTX *initial_ctx so that new sessions can be
2765 stored in that context to allow for session resumption, even after the
2766 SSL has been switched to a new SSL_CTX in reaction to a client's
2767 server_name extension.
2769 New functions (subject to change):
2771 SSL_get_servername()
2772 SSL_get_servername_type()
2775 New CTRL codes and macros (subject to change):
2777 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2778 - SSL_CTX_set_tlsext_servername_callback()
2779 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2780 - SSL_CTX_set_tlsext_servername_arg()
2781 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2783 openssl s_client has a new '-servername ...' option.
2785 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2786 '-key2 ...', '-servername_fatal' (subject to change). This allows
2787 testing the HostName extension for a specific single host name ('-cert'
2788 and '-key' remain fallbacks for handshakes without HostName
2789 negotiation). If the unrecognized_name alert has to be sent, this by
2790 default is a warning; it becomes fatal with the '-servername_fatal'
2793 [Peter Sylvester, Remy Allais, Christophe Renou]
2795 *) Whirlpool hash implementation is added.
2798 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
2799 bn(64,32). Because of instruction set limitations it doesn't have
2800 any negative impact on performance. This was done mostly in order
2801 to make it possible to share assembler modules, such as bn_mul_mont
2802 implementations, between 32- and 64-bit builds without hassle.
2805 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
2806 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
2810 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
2811 dedicated Montgomery multiplication procedure, is introduced.
2812 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
2813 "64-bit" performance on certain 32-bit targets.
2816 *) New option SSL_OP_NO_COMP to disable use of compression selectively
2817 in SSL structures. New SSL ctrl to set maximum send fragment size.
2818 Save memory by seeting the I/O buffer sizes dynamically instead of
2819 using the maximum available value.
2822 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
2823 in addition to the text details.
2826 *) Very, very preliminary EXPERIMENTAL support for printing of general
2827 ASN1 structures. This currently produces rather ugly output and doesn't
2828 handle several customised structures at all.
2831 *) Integrated support for PVK file format and some related formats such
2832 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
2833 these in the 'rsa' and 'dsa' utilities.
2836 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2839 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2840 place for the (very old) "NETSCAPE" format certificates which are now
2841 handled using new ASN1 code equivalents.
2844 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2845 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2846 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2849 *) Modify CRL distribution points extension code to print out previously
2850 unsupported fields. Enhance extension setting code to allow setting of
2854 *) Add print and set support for Issuing Distribution Point CRL extension.
2857 *) Change 'Configure' script to enable Camellia by default.
2860 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2862 *) When rejecting SSL/TLS records due to an incorrect version number, never
2863 update s->server with a new major version number. As of
2864 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2865 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2866 the previous behavior could result in a read attempt at NULL when
2867 receiving specific incorrect SSL/TLS records once record payload
2868 protection is active. (CVE-2010-0740)
2869 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2871 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2872 could be crashed if the relevant tables were not present (e.g. chrooted).
2873 [Tomas Hoger <thoger@redhat.com>]
2875 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2877 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2878 [Martin Olsson, Neel Mehta]
2880 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2881 accommodate for stack sorting, always a write lock!).
2884 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2885 excessive delays in the RAND_poll(): over a minute. As a workaround
2886 include a time check in the inner Heap32Next loop too.
2889 *) The code that handled flushing of data in SSL/TLS originally used the
2890 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2891 the problem outlined in PR#1949. The fix suggested there however can
2892 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2893 of Apache). So instead simplify the code to flush unconditionally.
2894 This should be fine since flushing with no data to flush is a no op.
2897 *) Handle TLS versions 2.0 and later properly and correctly use the
2898 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2899 off ancient servers have a habit of sticking around for a while...
2902 *) Modify compression code so it frees up structures without using the
2903 ex_data callbacks. This works around a problem where some applications
2904 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2905 restarting) then use compression (e.g. SSL with compression) later.
2906 This results in significant per-connection memory leaks and
2907 has caused some security issues including CVE-2008-1678 and
2911 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2912 change when encrypting or decrypting.
2915 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2916 connect and renegotiate with servers which do not support RI.
2917 Until RI is more widely deployed this option is enabled by default.
2920 *) Add "missing" ssl ctrls to clear options and mode.
2923 *) If client attempts to renegotiate and doesn't support RI respond with
2924 a no_renegotiation alert as required by RFC5746. Some renegotiating
2925 TLS clients will continue a connection gracefully when they receive
2926 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2927 waiting for a server hello which it will never receive. Now we treat a
2928 received no_renegotiation alert as a fatal error. This is because
2929 applications requesting a renegotiation might well expect it to succeed
2930 and would have no code in place to handle the server denying it so the
2931 only safe thing to do is to terminate the connection.
2934 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2935 peer supports secure renegotiation and 0 otherwise. Print out peer
2936 renegotiation support in s_client/s_server.
2939 *) Replace the highly broken and deprecated SPKAC certification method with
2940 the updated NID creation version. This should correctly handle UTF8.
2943 *) Implement RFC5746. Re-enable renegotiation but require the extension
2944 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2945 turns out to be a bad idea. It has been replaced by
2946 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2947 SSL_CTX_set_options(). This is really not recommended unless you
2948 know what you are doing.
2949 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2951 *) Fixes to stateless session resumption handling. Use initial_ctx when
2952 issuing and attempting to decrypt tickets in case it has changed during
2953 servername handling. Use a non-zero length session ID when attempting
2954 stateless session resumption: this makes it possible to determine if
2955 a resumption has occurred immediately after receiving server hello
2956 (several places in OpenSSL subtly assume this) instead of later in
2960 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2961 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2962 fixes for a few places where the return code is not checked
2964 [Julia Lawall <julia@diku.dk>]
2966 *) Add --strict-warnings option to Configure script to include devteam
2967 warnings in other configurations.
2970 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2971 makes it possible to install openssl libraries in locations which
2972 have names other than "lib", for example "/usr/lib64" which some
2974 [Steve Henson, based on patch from Jeremy Utley]
2976 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2977 X690 8.9.12 and can produce some misleading textual output of OIDs.
2978 [Steve Henson, reported by Dan Kaminsky]
2980 *) Delete MD2 from algorithm tables. This follows the recommendation in
2981 several standards that it is not used in new applications due to
2982 several cryptographic weaknesses. For binary compatibility reasons
2983 the MD2 API is still compiled in by default.
2986 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2990 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2991 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2993 [Guenter <lists@gknw.net>]
2995 *) Fix the server certificate chain building code to use X509_verify_cert(),
2996 it used to have an ad-hoc builder which was unable to cope with anything
2997 other than a simple chain.
2998 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
3000 *) Don't check self signed certificate signatures in X509_verify_cert()
3001 by default (a flag can override this): it just wastes time without
3002 adding any security. As a useful side effect self signed root CAs
3003 with non-FIPS digests are now usable in FIPS mode.
3006 *) In dtls1_process_out_of_seq_message() the check if the current message
3007 is already buffered was missing. For every new message was memory
3008 allocated, allowing an attacker to perform an denial of service attack
3009 with sending out of seq handshake messages until there is no memory
3010 left. Additionally every future messege was buffered, even if the
3011 sequence number made no sense and would be part of another handshake.
3012 So only messages with sequence numbers less than 10 in advance will be
3013 buffered. (CVE-2009-1378)
3014 [Robin Seggelmann, discovered by Daniel Mentz]
3016 *) Records are buffered if they arrive with a future epoch to be
3017 processed after finishing the corresponding handshake. There is
3018 currently no limitation to this buffer allowing an attacker to perform
3019 a DOS attack with sending records with future epochs until there is no
3020 memory left. This patch adds the pqueue_size() function to determine
3021 the size of a buffer and limits the record buffer to 100 entries.
3023 [Robin Seggelmann, discovered by Daniel Mentz]
3025 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
3026 parent structure is freed. (CVE-2009-1379)
3029 *) Handle non-blocking I/O properly in SSL_shutdown() call.
3030 [Darryl Miles <darryl-mailinglists@netbauds.net>]
3033 [Ilya O. <vrghost@gmail.com>]
3035 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
3037 *) Disable renegotiation completely - this fixes a severe security
3038 problem (CVE-2009-3555) at the cost of breaking all
3039 renegotiation. Renegotiation can be re-enabled by setting
3040 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
3041 run-time. This is really not recommended unless you know what
3045 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
3047 *) Don't set val to NULL when freeing up structures, it is freed up by
3048 underlying code. If sizeof(void *) > sizeof(long) this can result in
3049 zeroing past the valid field. (CVE-2009-0789)
3050 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
3052 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
3053 checked correctly. This would allow some invalid signed attributes to
3054 appear to verify correctly. (CVE-2009-0591)
3055 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3057 *) Reject UniversalString and BMPString types with invalid lengths. This
3058 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
3059 a legal length. (CVE-2009-0590)
3062 *) Set S/MIME signing as the default purpose rather than setting it
3063 unconditionally. This allows applications to override it at the store
3067 *) Permit restricted recursion of ASN1 strings. This is needed in practice
3068 to handle some structures.
3071 *) Improve efficiency of mem_gets: don't search whole buffer each time
3073 [Jeremy Shapiro <jnshapir@us.ibm.com>]
3075 *) New -hex option for openssl rand.
3078 *) Print out UTF8String and NumericString when parsing ASN1.
3081 *) Support NumericString type for name components.
3084 *) Allow CC in the environment to override the automatically chosen
3085 compiler. Note that nothing is done to ensure flags work with the
3089 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
3091 *) Properly check EVP_VerifyFinal() and similar return values
3093 [Ben Laurie, Bodo Moeller, Google Security Team]
3095 *) Enable TLS extensions by default.
3098 *) Allow the CHIL engine to be loaded, whether the application is
3099 multithreaded or not. (This does not release the developer from the
3100 obligation to set up the dynamic locking callbacks.)
3101 [Sander Temme <sander@temme.net>]
3103 *) Use correct exit code if there is an error in dgst command.
3104 [Steve Henson; problem pointed out by Roland Dirlewanger]
3106 *) Tweak Configure so that you need to say "experimental-jpake" to enable
3107 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
3110 *) Add experimental JPAKE support, including demo authentication in
3111 s_client and s_server.
3114 *) Set the comparison function in v3_addr_canonize().
3115 [Rob Austein <sra@hactrn.net>]
3117 *) Add support for XMPP STARTTLS in s_client.
3118 [Philip Paeps <philip@freebsd.org>]
3120 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
3121 to ensure that even with this option, only ciphersuites in the
3122 server's preference list will be accepted. (Note that the option
3123 applies only when resuming a session, so the earlier behavior was
3124 just about the algorithm choice for symmetric cryptography.)
3127 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
3129 *) Fix NULL pointer dereference if a DTLS server received
3130 ChangeCipherSpec as first record (CVE-2009-1386).
3133 *) Fix a state transition in s3_srvr.c and d1_srvr.c
3134 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
3137 *) The fix in 0.9.8c that supposedly got rid of unsafe
3138 double-checked locking was incomplete for RSA blinding,
3139 addressing just one layer of what turns out to have been
3140 doubly unsafe triple-checked locking.
3142 So now fix this for real by retiring the MONT_HELPER macro
3143 in crypto/rsa/rsa_eay.c.
3145 [Bodo Moeller; problem pointed out by Marius Schilder]
3147 *) Various precautionary measures:
3149 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
3151 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
3152 (NB: This would require knowledge of the secret session ticket key
3153 to exploit, in which case you'd be SOL either way.)
3155 - Change bn_nist.c so that it will properly handle input BIGNUMs
3156 outside the expected range.
3158 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
3161 [Neel Mehta, Bodo Moeller]
3163 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
3164 the load fails. Useful for distros.
3165 [Ben Laurie and the FreeBSD team]
3167 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
3170 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
3173 *) Expand ENGINE to support engine supplied SSL client certificate functions.
3175 This work was sponsored by Logica.
3178 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
3179 keystores. Support for SSL/TLS client authentication too.
3180 Not compiled unless enable-capieng specified to Configure.
3182 This work was sponsored by Logica.
3185 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
3186 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
3187 attribute creation routines such as certifcate requests and PKCS#12
3191 Changes between 0.9.8g and 0.9.8h [28 May 2008]
3193 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
3194 handshake which could lead to a cilent crash as found using the
3195 Codenomicon TLS test suite (CVE-2008-1672)
3196 [Steve Henson, Mark Cox]
3198 *) Fix double free in TLS server name extensions which could lead to
3199 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
3202 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
3204 Clear the error queue to ensure that error entries left from
3205 older function calls do not interfere with the correct operation.
3206 [Lutz Jaenicke, Erik de Castro Lopo]
3208 *) Remove root CA certificates of commercial CAs:
3210 The OpenSSL project does not recommend any specific CA and does not
3211 have any policy with respect to including or excluding any CA.
3212 Therefore it does not make any sense to ship an arbitrary selection
3213 of root CA certificates with the OpenSSL software.
3216 *) RSA OAEP patches to fix two separate invalid memory reads.
3217 The first one involves inputs when 'lzero' is greater than
3218 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
3219 before the beginning of from). The second one involves inputs where
3220 the 'db' section contains nothing but zeroes (there is a one-byte
3221 invalid read after the end of 'db').
3222 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3224 *) Partial backport from 0.9.9-dev:
3226 Introduce bn_mul_mont (dedicated Montgomery multiplication
3227 procedure) as a candidate for BIGNUM assembler implementation.
3228 While 0.9.9-dev uses assembler for various architectures, only
3229 x86_64 is available by default here in the 0.9.8 branch, and
3230 32-bit x86 is available through a compile-time setting.
3232 To try the 32-bit x86 assembler implementation, use Configure
3233 option "enable-montasm" (which exists only for this backport).
3235 As "enable-montasm" for 32-bit x86 disclaims code stability
3236 anyway, in this constellation we activate additional code
3237 backported from 0.9.9-dev for further performance improvements,
3238 namely BN_from_montgomery_word. (To enable this otherwise,
3239 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
3241 [Andy Polyakov (backport partially by Bodo Moeller)]
3243 *) Add TLS session ticket callback. This allows an application to set
3244 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
3245 values. This is useful for key rollover for example where several key
3246 sets may exist with different names.
3249 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
3250 This was broken until now in 0.9.8 releases, such that the only way
3251 a registered ENGINE could be used (assuming it initialises
3252 successfully on the host) was to explicitly set it as the default
3253 for the relevant algorithms. This is in contradiction with 0.9.7
3254 behaviour and the documentation. With this fix, when an ENGINE is
3255 registered into a given algorithm's table of implementations, the
3256 'uptodate' flag is reset so that auto-discovery will be used next
3257 time a new context for that algorithm attempts to select an
3259 [Ian Lister (tweaked by Geoff Thorpe)]
3261 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
3262 implemention in the following ways:
3264 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
3267 Lack of BER streaming support means one pass streaming processing is
3268 only supported if data is detached: setting the streaming flag is
3269 ignored for embedded content.
3271 CMS support is disabled by default and must be explicitly enabled
3272 with the enable-cms configuration option.
3275 *) Update the GMP engine glue to do direct copies between BIGNUM and
3276 mpz_t when openssl and GMP use the same limb size. Otherwise the
3277 existing "conversion via a text string export" trick is still used.
3278 [Paul Sheer <paulsheer@gmail.com>]
3280 *) Zlib compression BIO. This is a filter BIO which compressed and
3281 uncompresses any data passed through it.
3284 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
3285 RFC3394 compatible AES key wrapping.
3288 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
3289 sets string data without copying. X509_ALGOR_set0() and
3290 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
3291 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
3292 from an X509_ATTRIBUTE structure optionally checking it occurs only
3293 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
3297 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
3298 to get the expected BN_FLG_CONSTTIME behavior.
3299 [Bodo Moeller (Google)]
3303 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
3304 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
3305 - added some more tests to do_tests.pl
3306 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
3307 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
3308 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
3309 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
3310 - various changes to netware.pl to enable gcc-cross builds on Win32
3312 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
3313 - various changes to fix missing prototype warnings
3314 - fixed x86nasm.pl to create correct asm files for NASM COFF output
3315 - added AES, WHIRLPOOL and CPUID assembler code to build files
3316 - added missing AES assembler make rules to mk1mf.pl
3317 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
3318 [Guenter Knauf <eflash@gmx.net>]
3320 *) Implement certificate status request TLS extension defined in RFC3546.
3321 A client can set the appropriate parameters and receive the encoded
3322 OCSP response via a callback. A server can query the supplied parameters
3323 and set the encoded OCSP response in the callback. Add simplified examples
3324 to s_client and s_server.
3327 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
3329 *) Fix various bugs:
3330 + Binary incompatibility of ssl_ctx_st structure
3331 + DTLS interoperation with non-compliant servers
3332 + Don't call get_session_cb() without proposed session
3333 + Fix ia64 assembler code
3334 [Andy Polyakov, Steve Henson]
3336 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
3338 *) DTLS Handshake overhaul. There were longstanding issues with
3339 OpenSSL DTLS implementation, which were making it impossible for
3340 RFC 4347 compliant client to communicate with OpenSSL server.
3341 Unfortunately just fixing these incompatibilities would "cut off"
3342 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
3343 server keeps tolerating non RFC compliant syntax. The opposite is
3344 not true, 0.9.8f client can not communicate with earlier server.
3345 This update even addresses CVE-2007-4995.
3348 *) Changes to avoid need for function casts in OpenSSL: some compilers
3349 (gcc 4.2 and later) reject their use.
3350 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
3353 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3354 RFC4507bis. The encrypted ticket format is an encrypted encoded
3355 SSL_SESSION structure, that way new session features are automatically
3358 If a client application caches session in an SSL_SESSION structure
3359 support is transparent because tickets are now stored in the encoded
3362 The SSL_CTX structure automatically generates keys for ticket
3363 protection in servers so again support should be possible
3364 with no application modification.
3366 If a client or server wishes to disable RFC4507 support then the option
3367 SSL_OP_NO_TICKET can be set.
3369 Add a TLS extension debugging callback to allow the contents of any client
3370 or server extensions to be examined.
3372 This work was sponsored by Google.
3375 *) Add initial support for TLS extensions, specifically for the server_name
3376 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3377 have new members for a host name. The SSL data structure has an
3378 additional member SSL_CTX *initial_ctx so that new sessions can be
3379 stored in that context to allow for session resumption, even after the
3380 SSL has been switched to a new SSL_CTX in reaction to a client's
3381 server_name extension.
3383 New functions (subject to change):
3385 SSL_get_servername()
3386 SSL_get_servername_type()
3389 New CTRL codes and macros (subject to change):
3391 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3392 - SSL_CTX_set_tlsext_servername_callback()
3393 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3394 - SSL_CTX_set_tlsext_servername_arg()
3395 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3397 openssl s_client has a new '-servername ...' option.
3399 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3400 '-key2 ...', '-servername_fatal' (subject to change). This allows
3401 testing the HostName extension for a specific single host name ('-cert'
3402 and '-key' remain fallbacks for handshakes without HostName
3403 negotiation). If the unrecognized_name alert has to be sent, this by
3404 default is a warning; it becomes fatal with the '-servername_fatal'
3407 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
3409 *) Add AES and SSE2 assembly language support to VC++ build.
3412 *) Mitigate attack on final subtraction in Montgomery reduction.
3415 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
3416 (which previously caused an internal error).
3419 *) Squeeze another 10% out of IGE mode when in != out.
3422 *) AES IGE mode speedup.
3423 [Dean Gaudet (Google)]
3425 *) Add the Korean symmetric 128-bit cipher SEED (see
3426 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
3427 add SEED ciphersuites from RFC 4162:
3429 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
3430 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
3431 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
3432 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
3434 To minimize changes between patchlevels in the OpenSSL 0.9.8
3435 series, SEED remains excluded from compilation unless OpenSSL
3436 is configured with 'enable-seed'.
3437 [KISA, Bodo Moeller]
3439 *) Mitigate branch prediction attacks, which can be practical if a
3440 single processor is shared, allowing a spy process to extract
3441 information. For detailed background information, see
3442 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
3443 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
3444 and Necessary Software Countermeasures"). The core of the change
3445 are new versions BN_div_no_branch() and
3446 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
3447 respectively, which are slower, but avoid the security-relevant
3448 conditional branches. These are automatically called by BN_div()
3449 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
3450 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
3451 remove a conditional branch.
3453 BN_FLG_CONSTTIME is the new name for the previous
3454 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
3455 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
3456 in the exponent causes BN_mod_exp_mont() to use the alternative
3457 implementation in BN_mod_exp_mont_consttime().) The old name
3458 remains as a deprecated alias.
3460 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
3461 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
3462 constant-time implementations for more than just exponentiation.
3463 Here too the old name is kept as a deprecated alias.
3465 BN_BLINDING_new() will now use BN_dup() for the modulus so that
3466 the BN_BLINDING structure gets an independent copy of the
3467 modulus. This means that the previous "BIGNUM *m" argument to
3468 BN_BLINDING_new() and to BN_BLINDING_create_param() now
3469 essentially becomes "const BIGNUM *m", although we can't actually
3470 change this in the header file before 0.9.9. It allows
3471 RSA_setup_blinding() to use BN_with_flags() on the modulus to
3472 enable BN_FLG_CONSTTIME.
3474 [Matthew D Wood (Intel Corp)]
3476 *) In the SSL/TLS server implementation, be strict about session ID
3477 context matching (which matters if an application uses a single
3478 external cache for different purposes). Previously,
3479 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
3480 set. This did ensure strict client verification, but meant that,
3481 with applications using a single external cache for quite
3482 different requirements, clients could circumvent ciphersuite
3483 restrictions for a given session ID context by starting a session
3484 in a different context.
3487 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3488 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3489 authentication-only ciphersuites.
3492 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
3493 not complete and could lead to a possible single byte overflow
3494 (CVE-2007-5135) [Ben Laurie]
3496 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
3498 *) Since AES128 and AES256 (and similarly Camellia128 and
3499 Camellia256) share a single mask bit in the logic of
3500 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3501 kludge to work properly if AES128 is available and AES256 isn't
3502 (or if Camellia128 is available and Camellia256 isn't).
3505 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
3506 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
3507 When a point or a seed is encoded in a BIT STRING, we need to
3508 prevent the removal of trailing zero bits to get the proper DER
3509 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3510 of a NamedBitList, for which trailing 0 bits need to be removed.)
3513 *) Have SSL/TLS server implementation tolerate "mismatched" record
3514 protocol version while receiving ClientHello even if the
3515 ClientHello is fragmented. (The server can't insist on the
3516 particular protocol version it has chosen before the ServerHello
3517 message has informed the client about his choice.)
3520 *) Add RFC 3779 support.
3521 [Rob Austein for ARIN, Ben Laurie]
3523 *) Load error codes if they are not already present instead of using a
3524 static variable. This allows them to be cleanly unloaded and reloaded.
3525 Improve header file function name parsing.
3528 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3529 or CAPABILITY handshake as required by RFCs.
3532 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3534 *) Introduce limits to prevent malicious keys being able to
3535 cause a denial of service. (CVE-2006-2940)
3536 [Steve Henson, Bodo Moeller]
3538 *) Fix ASN.1 parsing of certain invalid structures that can result
3539 in a denial of service. (CVE-2006-2937) [Steve Henson]
3541 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3542 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3544 *) Fix SSL client code which could crash if connecting to a
3545 malicious SSLv2 server. (CVE-2006-4343)
3546 [Tavis Ormandy and Will Drewry, Google Security Team]
3548 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3549 match only those. Before that, "AES256-SHA" would be interpreted
3550 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3551 the same strength classification in 0.9.7h) as we currently only
3552 have a single AES bit in the ciphersuite description bitmap.
3553 That change, however, also applied to ciphersuite strings such as
3554 "RC4-MD5" that intentionally matched multiple ciphersuites --
3555 namely, SSL 2.0 ciphersuites in addition to the more common ones
3556 from SSL 3.0/TLS 1.0.
3558 So we change the selection algorithm again: Naming an explicit
3559 ciphersuite selects this one ciphersuite, and any other similar
3560 ciphersuite (same bitmap) from *other* protocol versions.
3561 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3562 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3564 Since SSL 2.0 does not have any ciphersuites for which the
3565 128/256 bit distinction would be relevant, this works for now.
3566 The proper fix will be to use different bits for AES128 and
3567 AES256, which would have avoided the problems from the beginning;
3568 however, bits are scarce, so we can only do this in a new release
3569 (not just a patchlevel) when we can change the SSL_CIPHER
3570 definition to split the single 'unsigned long mask' bitmap into
3571 multiple values to extend the available space.
3575 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3577 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3578 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3580 *) Add AES IGE and biIGE modes.
3583 *) Change the Unix randomness entropy gathering to use poll() when
3584 possible instead of select(), since the latter has some
3585 undesirable limitations.
3586 [Darryl Miles via Richard Levitte and Bodo Moeller]
3588 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3589 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3590 cannot be implicitly activated as part of, e.g., the "AES" alias.
3591 However, please upgrade to OpenSSL 0.9.9[-dev] for
3592 non-experimental use of the ECC ciphersuites to get TLS extension
3593 support, which is required for curve and point format negotiation
3594 to avoid potential handshake problems.
3597 *) Disable rogue ciphersuites:
3599 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3600 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3601 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3603 The latter two were purportedly from
3604 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3607 Also deactivate the remaining ciphersuites from
3608 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3609 unofficial, and the ID has long expired.
3612 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3613 dual-core machines) and other potential thread-safety issues.
3616 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3617 versions), which is now available for royalty-free use
3618 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3619 Also, add Camellia TLS ciphersuites from RFC 4132.
3621 To minimize changes between patchlevels in the OpenSSL 0.9.8
3622 series, Camellia remains excluded from compilation unless OpenSSL
3623 is configured with 'enable-camellia'.
3626 *) Disable the padding bug check when compression is in use. The padding
3627 bug check assumes the first packet is of even length, this is not
3628 necessarily true if compresssion is enabled and can result in false
3629 positives causing handshake failure. The actual bug test is ancient
3630 code so it is hoped that implementations will either have fixed it by
3631 now or any which still have the bug do not support compression.
3634 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3636 *) When applying a cipher rule check to see if string match is an explicit
3637 cipher suite and only match that one cipher suite if it is.
3640 *) Link in manifests for VC++ if needed.
3641 [Austin Ziegler <halostatue@gmail.com>]
3643 *) Update support for ECC-based TLS ciphersuites according to
3644 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3645 TLS extensions, which are supported starting with the 0.9.9
3646 branch, not in the OpenSSL 0.9.8 branch).
3649 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3650 opaque EVP_CIPHER_CTX handling.
3653 *) Fixes and enhancements to zlib compression code. We now only use
3654 "zlib1.dll" and use the default __cdecl calling convention on Win32
3655 to conform with the standards mentioned here:
3656 http://www.zlib.net/DLL_FAQ.txt
3657 Static zlib linking now works on Windows and the new --with-zlib-include
3658 --with-zlib-lib options to Configure can be used to supply the location
3659 of the headers and library. Gracefully handle case where zlib library
3663 *) Several fixes and enhancements to the OID generation code. The old code
3664 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3665 handle numbers larger than ULONG_MAX, truncated printing and had a
3666 non standard OBJ_obj2txt() behaviour.
3669 *) Add support for building of engines under engine/ as shared libraries
3670 under VC++ build system.
3673 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3674 Hopefully, we will not see any false combination of paths any more.
3677 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3679 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3680 (part of SSL_OP_ALL). This option used to disable the
3681 countermeasure against man-in-the-middle protocol-version
3682 rollback in the SSL 2.0 server implementation, which is a bad
3683 idea. (CVE-2005-2969)
3685 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3686 for Information Security, National Institute of Advanced Industrial
3687 Science and Technology [AIST], Japan)]
3689 *) Add two function to clear and return the verify parameter flags.
3692 *) Keep cipherlists sorted in the source instead of sorting them at
3693 runtime, thus removing the need for a lock.
3696 *) Avoid some small subgroup attacks in Diffie-Hellman.
3697 [Nick Mathewson and Ben Laurie]
3699 *) Add functions for well-known primes.
3702 *) Extended Windows CE support.
3703 [Satoshi Nakamura and Andy Polyakov]
3705 *) Initialize SSL_METHOD structures at compile time instead of during
3706 runtime, thus removing the need for a lock.
3709 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3710 attempting to decrypt each encrypted key in turn. Add support to
3714 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3716 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3719 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3722 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3723 key into the same file any more.
3726 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3729 *) Add -utf8 command line and config file option to 'ca'.
3730 [Stefan <stf@udoma.org]
3732 *) Removed the macro des_crypt(), as it seems to conflict with some
3733 libraries. Use DES_crypt().
3736 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3737 involves renaming the source and generated shared-libs for
3738 both. The engines will accept the corrected or legacy ids
3739 ('ncipher' and '4758_cca' respectively) when binding. NB,
3740 this only applies when building 'shared'.
3741 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3743 *) Add attribute functions to EVP_PKEY structure. Modify
3744 PKCS12_create() to recognize a CSP name attribute and
3745 use it. Make -CSP option work again in pkcs12 utility.
3748 *) Add new functionality to the bn blinding code:
3749 - automatic re-creation of the BN_BLINDING parameters after
3750 a fixed number of uses (currently 32)
3751 - add new function for parameter creation
3752 - introduce flags to control the update behaviour of the
3753 BN_BLINDING parameters
3754 - hide BN_BLINDING structure
3755 Add a second BN_BLINDING slot to the RSA structure to improve
3756 performance when a single RSA object is shared among several
3760 *) Add support for DTLS.
3761 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3763 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3764 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3767 *) Remove buggy and incomplete DH cert support from
3768 ssl/ssl_rsa.c and ssl/s3_both.c
3771 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3772 the apps/openssl applications.
3775 *) Compile clean with "-Wall -Wmissing-prototypes
3776 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3777 DEBUG_SAFESTACK must also be set.
3780 *) Change ./Configure so that certain algorithms can be disabled by default.
3781 The new counterpiece to "no-xxx" is "enable-xxx".
3783 The patented RC5 and MDC2 algorithms will now be disabled unless
3784 "enable-rc5" and "enable-mdc2", respectively, are specified.
3786 (IDEA remains enabled despite being patented. This is because IDEA
3787 is frequently required for interoperability, and there is no license
3788 fee for non-commercial use. As before, "no-idea" can be used to
3789 avoid this algorithm.)
3793 *) Add processing of proxy certificates (see RFC 3820). This work was
3794 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3795 EGEE (Enabling Grids for E-science in Europe).
3798 *) RC4 performance overhaul on modern architectures/implementations, such
3799 as Intel P4, IA-64 and AMD64.
3802 *) New utility extract-section.pl. This can be used specify an alternative
3803 section number in a pod file instead of having to treat each file as
3804 a separate case in Makefile. This can be done by adding two lines to the
3807 =for comment openssl_section:XXX
3809 The blank line is mandatory.
3813 *) New arguments -certform, -keyform and -pass for s_client and s_server
3814 to allow alternative format key and certificate files and passphrase
3818 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3819 update associated structures and add various utility functions.
3821 Add new policy related verify parameters, include policy checking in
3822 standard verify code. Enhance 'smime' application with extra parameters
3823 to support policy checking and print out.
3826 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3827 Nehemiah processors. These extensions support AES encryption in hardware
3828 as well as RNG (though RNG support is currently disabled).
3829 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3831 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3834 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3835 [Andy Polyakov and a number of other people]
3837 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3838 implementation contributed by IBM.
3839 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3841 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3842 exponent rather than 'unsigned long'. There is a corresponding change to
3843 the new 'rsa_keygen' element of the RSA_METHOD structure.
3844 [Jelte Jansen, Geoff Thorpe]
3846 *) Functionality for creating the initial serial number file is now
3847 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3849 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3850 number file to 1, which is bound to cause problems. To avoid
3851 the problems while respecting compatibility between different 0.9.7
3852 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3853 CA.pl for serial number initialization. With the new release 0.9.8,
3854 we can fix the problem directly in the 'ca' utility.)
3857 *) Reduced header interdepencies by declaring more opaque objects in
3858 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3859 give fewer recursive includes, which could break lazy source code - so
3860 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3861 developers should define this symbol when building and using openssl to
3862 ensure they track the recommended behaviour, interfaces, [etc], but
3863 backwards-compatible behaviour prevails when this isn't defined.
3866 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3869 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3870 This will generate a random key of the appropriate length based on the
3871 cipher context. The EVP_CIPHER can provide its own random key generation
3872 routine to support keys of a specific form. This is used in the des and
3873 3des routines to generate a key of the correct parity. Update S/MIME
3874 code to use new functions and hence generate correct parity DES keys.
3875 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3876 valid (weak or incorrect parity).
3879 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3880 as looking them up. This is useful when the verified structure may contain
3881 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3882 present unless the new PKCS7_NO_CRL flag is asserted.
3885 *) Extend ASN1 oid configuration module. It now additionally accepts the
3888 shortName = some long name, 1.2.3.4
3891 *) Reimplemented the BN_CTX implementation. There is now no more static
3892 limitation on the number of variables it can handle nor the depth of the
3893 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3894 information can now expand as required, and rather than having a single
3895 static array of bignums, BN_CTX now uses a linked-list of such arrays
3896 allowing it to expand on demand whilst maintaining the usefulness of
3897 BN_CTX's "bundling".
3900 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3901 to allow all RSA operations to function using a single BN_CTX.
3904 *) Preliminary support for certificate policy evaluation and checking. This
3905 is initially intended to pass the tests outlined in "Conformance Testing
3906 of Relying Party Client Certificate Path Processing Logic" v1.07.
3909 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3910 remained unused and not that useful. A variety of other little bignum
3911 tweaks and fixes have also been made continuing on from the audit (see
3915 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3916 associated ASN1, EVP and SSL functions and old ASN1 macros.
3919 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3920 and this should never fail. So the return value from the use of
3921 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3922 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3925 *) BN_CTX_get() should return zero-valued bignums, providing the same
3926 initialised value as BN_new().
3927 [Geoff Thorpe, suggested by Ulf Möller]
3929 *) Support for inhibitAnyPolicy certificate extension.
3932 *) An audit of the BIGNUM code is underway, for which debugging code is
3933 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3934 is considered valid when processing BIGNUMs, and causes execution to
3935 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3936 further steps are taken to deliberately pollute unused data in BIGNUM
3937 structures to try and expose faulty code further on. For now, openssl will
3938 (in its default mode of operation) continue to tolerate the inconsistent
3939 forms that it has tolerated in the past, but authors and packagers should
3940 consider trying openssl and their own applications when compiled with
3941 these debugging symbols defined. It will help highlight potential bugs in
3942 their own code, and will improve the test coverage for OpenSSL itself. At
3943 some point, these tighter rules will become openssl's default to improve
3944 maintainability, though the assert()s and other overheads will remain only
3945 in debugging configurations. See bn.h for more details.
3946 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3948 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3949 that can only be obtained through BN_CTX_new() (which implicitly
3950 initialises it). The presence of this function only made it possible
3951 to overwrite an existing structure (and cause memory leaks).
3954 *) Because of the callback-based approach for implementing LHASH as a
3955 template type, lh_insert() adds opaque objects to hash-tables and
3956 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3957 to clean up those corresponding objects before destroying the hash table
3958 (and losing the object pointers). So some over-zealous constifications in
3959 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3960 objects as "const" and the lh_doall[_arg] callback wrappers are not
3961 prototyped to have "const" restrictions on the object pointers they are
3962 given (and so aren't required to cast them away any more).
3965 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3966 (speed) prefers to use its own implementation. The two implementations
3967 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3968 its object type properly exposed (MS_TM) instead of casting to/from "char
3969 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3970 aren't necessarily the greatest nomenclatures - but this is what was used
3971 internally to the implementation so I've used that for now.
3974 *) Ensure that deprecated functions do not get compiled when
3975 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3976 the self-tests were still using deprecated key-generation functions so
3977 these have been updated also.
3980 *) Reorganise PKCS#7 code to separate the digest location functionality
3981 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
3982 New function PKCS7_set_digest() to set the digest type for PKCS#7
3983 digestedData type. Add additional code to correctly generate the
3984 digestedData type and add support for this type in PKCS7 initialization
3988 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3989 structure of type "other".
3992 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3993 sure the loop does correctly stop and breaking ("division by zero")
3994 modulus operations are not performed. The (pre-generated) prime
3995 table crypto/bn/bn_prime.h was already correct, but it could not be
3996 re-generated on some platforms because of the "division by zero"
3997 situation in the script.
3998 [Ralf S. Engelschall]
4000 *) Update support for ECC-based TLS ciphersuites according to
4001 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
4002 SHA-1 now is only used for "small" curves (where the
4003 representation of a field element takes up to 24 bytes); for
4004 larger curves, the field element resulting from ECDH is directly
4005 used as premaster secret.
4006 [Douglas Stebila (Sun Microsystems Laboratories)]
4008 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
4009 curve secp160r1 to the tests.
4010 [Douglas Stebila (Sun Microsystems Laboratories)]
4012 *) Add the possibility to load symbols globally with DSO.
4013 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
4015 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
4016 control of the error stack.
4019 *) Add support for STORE in ENGINE.
4022 *) Add the STORE type. The intention is to provide a common interface
4023 to certificate and key stores, be they simple file-based stores, or
4024 HSM-type store, or LDAP stores, or...
4025 NOTE: The code is currently UNTESTED and isn't really used anywhere.
4028 *) Add a generic structure called OPENSSL_ITEM. This can be used to
4029 pass a list of arguments to any function as well as provide a way
4030 for a function to pass data back to the caller.
4033 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
4034 works like BUF_strdup() but can be used to duplicate a portion of
4035 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
4039 *) Add the function sk_find_ex() which works like sk_find(), but will
4040 return an index to an element even if an exact match couldn't be
4041 found. The index is guaranteed to point at the element where the
4042 searched-for key would be inserted to preserve sorting order.
4045 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
4046 takes an extra flags argument for optional functionality. Currently,
4047 the following flags are defined:
4049 OBJ_BSEARCH_VALUE_ON_NOMATCH
4050 This one gets OBJ_bsearch_ex() to return a pointer to the first
4051 element where the comparing function returns a negative or zero
4054 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
4055 This one gets OBJ_bsearch_ex() to return a pointer to the first
4056 element where the comparing function returns zero. This is useful
4057 if there are more than one element where the comparing function
4061 *) Make it possible to create self-signed certificates with 'openssl ca'
4062 in such a way that the self-signed certificate becomes part of the
4063 CA database and uses the same mechanisms for serial number generation
4064 as all other certificate signing. The new flag '-selfsign' enables
4065 this functionality. Adapt CA.sh and CA.pl.in.
4068 *) Add functionality to check the public key of a certificate request
4069 against a given private. This is useful to check that a certificate
4070 request can be signed by that key (self-signing).
4073 *) Make it possible to have multiple active certificates with the same
4074 subject in the CA index file. This is done only if the keyword
4075 'unique_subject' is set to 'no' in the main CA section (default
4076 if 'CA_default') of the configuration file. The value is saved
4077 with the database itself in a separate index attribute file,
4078 named like the index file with '.attr' appended to the name.
4081 *) Generate muti valued AVAs using '+' notation in config files for
4085 *) Support for nameConstraints certificate extension.
4088 *) Support for policyConstraints certificate extension.
4091 *) Support for policyMappings certificate extension.
4094 *) Make sure the default DSA_METHOD implementation only uses its
4095 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
4096 and change its own handlers to be NULL so as to remove unnecessary
4097 indirection. This lets alternative implementations fallback to the
4098 default implementation more easily.
4101 *) Support for directoryName in GeneralName related extensions
4105 *) Make it possible to link applications using Makefile.shared.
4106 Make that possible even when linking against static libraries!
4109 *) Support for single pass processing for S/MIME signing. This now
4110 means that S/MIME signing can be done from a pipe, in addition
4111 cleartext signing (multipart/signed type) is effectively streaming
4112 and the signed data does not need to be all held in memory.
4114 This is done with a new flag PKCS7_STREAM. When this flag is set
4115 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
4116 is done after the data is output (and digests calculated) in
4117 SMIME_write_PKCS7().
4120 *) Add full support for -rpath/-R, both in shared libraries and
4121 applications, at least on the platforms where it's known how
4125 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
4126 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
4127 will now compute a table of multiples of the generator that
4128 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
4129 faster (notably in the case of a single point multiplication,
4130 scalar * generator).
4131 [Nils Larsch, Bodo Moeller]
4133 *) IPv6 support for certificate extensions. The various extensions
4134 which use the IP:a.b.c.d can now take IPv6 addresses using the
4135 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
4139 *) Added an ENGINE that implements RSA by performing private key
4140 exponentiations with the GMP library. The conversions to and from
4141 GMP's mpz_t format aren't optimised nor are any montgomery forms
4142 cached, and on x86 it appears OpenSSL's own performance has caught up.
4143 However there are likely to be other architectures where GMP could
4144 provide a boost. This ENGINE is not built in by default, but it can be
4145 specified at Configure time and should be accompanied by the necessary
4146 linker additions, eg;
4147 ./config -DOPENSSL_USE_GMP -lgmp
4150 *) "openssl engine" will not display ENGINE/DSO load failure errors when
4151 testing availability of engines with "-t" - the old behaviour is
4152 produced by increasing the feature's verbosity with "-tt".
4155 *) ECDSA routines: under certain error conditions uninitialized BN objects
4156 could be freed. Solution: make sure initialization is performed early
4157 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
4161 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
4162 and DH_METHOD (eg. by ENGINE implementations) to override the normal
4163 software implementations. For DSA and DH, parameter generation can
4164 also be overriden by providing the appropriate method callbacks.
4167 *) Change the "progress" mechanism used in key-generation and
4168 primality testing to functions that take a new BN_GENCB pointer in
4169 place of callback/argument pairs. The new API functions have "_ex"
4170 postfixes and the older functions are reimplemented as wrappers for
4171 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
4172 declarations of the old functions to help (graceful) attempts to
4173 migrate to the new functions. Also, the new key-generation API
4174 functions operate on a caller-supplied key-structure and return
4175 success/failure rather than returning a key or NULL - this is to
4176 help make "keygen" another member function of RSA_METHOD etc.
4178 Example for using the new callback interface:
4180 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
4184 BN_GENCB_set(&my_cb, my_callback, my_arg);
4186 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
4187 /* For the meaning of a, b in calls to my_callback(), see the
4188 * documentation of the function that calls the callback.
4189 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
4190 * my_callback should return 1 if it wants BN_is_prime_ex()
4191 * to continue, or 0 to stop.
4196 *) Change the ZLIB compression method to be stateful, and make it
4197 available to TLS with the number defined in
4198 draft-ietf-tls-compression-04.txt.
4201 *) Add the ASN.1 structures and functions for CertificatePair, which
4202 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
4204 CertificatePair ::= SEQUENCE {
4205 forward [0] Certificate OPTIONAL,
4206 reverse [1] Certificate OPTIONAL,
4207 -- at least one of the pair shall be present -- }
4209 Also implement the PEM functions to read and write certificate
4210 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
4212 This needed to be defined, mostly for the sake of the LDAP
4213 attribute crossCertificatePair, but may prove useful elsewhere as
4217 *) Make it possible to inhibit symlinking of shared libraries in
4218 Makefile.shared, for Cygwin's sake.
4221 *) Extend the BIGNUM API by creating a function
4222 void BN_set_negative(BIGNUM *a, int neg);
4223 and a macro that behave like
4224 int BN_is_negative(const BIGNUM *a);
4226 to avoid the need to access 'a->neg' directly in applications.
4229 *) Implement fast modular reduction for pseudo-Mersenne primes
4230 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
4231 EC_GROUP_new_curve_GFp() will now automatically use this
4233 [Nils Larsch <nla@trustcenter.de>]
4235 *) Add new lock type (CRYPTO_LOCK_BN).
4238 *) Change the ENGINE framework to automatically load engines
4239 dynamically from specific directories unless they could be
4240 found to already be built in or loaded. Move all the
4241 current engines except for the cryptodev one to a new
4243 The engines in engines/ are built as shared libraries if
4244 the "shared" options was given to ./Configure or ./config.
4245 Otherwise, they are inserted in libcrypto.a.
4246 /usr/local/ssl/engines is the default directory for dynamic
4247 engines, but that can be overriden at configure time through
4248 the usual use of --prefix and/or --openssldir, and at run
4249 time with the environment variable OPENSSL_ENGINES.
4250 [Geoff Thorpe and Richard Levitte]
4252 *) Add Makefile.shared, a helper makefile to build shared
4253 libraries. Adapt Makefile.org.
4256 *) Add version info to Win32 DLLs.
4257 [Peter 'Luna' Runestig" <peter@runestig.com>]
4259 *) Add new 'medium level' PKCS#12 API. Certificates and keys
4260 can be added using this API to created arbitrary PKCS#12
4261 files while avoiding the low level API.
4263 New options to PKCS12_create(), key or cert can be NULL and
4264 will then be omitted from the output file. The encryption
4265 algorithm NIDs can be set to -1 for no encryption, the mac
4266 iteration count can be set to 0 to omit the mac.
4268 Enhance pkcs12 utility by making the -nokeys and -nocerts
4269 options work when creating a PKCS#12 file. New option -nomac
4270 to omit the mac, NONE can be set for an encryption algorithm.
4271 New code is modified to use the enhanced PKCS12_create()
4272 instead of the low level API.
4275 *) Extend ASN1 encoder to support indefinite length constructed
4276 encoding. This can output sequences tags and octet strings in
4277 this form. Modify pk7_asn1.c to support indefinite length
4278 encoding. This is experimental and needs additional code to
4279 be useful, such as an ASN1 bio and some enhanced streaming
4282 Extend template encode functionality so that tagging is passed
4283 down to the template encoder.
4286 *) Let 'openssl req' fail if an argument to '-newkey' is not
4287 recognized instead of using RSA as a default.
4290 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
4291 As these are not official, they are not included in "ALL";
4292 the "ECCdraft" ciphersuite group alias can be used to select them.
4293 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
4295 *) Add ECDH engine support.
4296 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
4298 *) Add ECDH in new directory crypto/ecdh/.
4299 [Douglas Stebila (Sun Microsystems Laboratories)]
4301 *) Let BN_rand_range() abort with an error after 100 iterations
4302 without success (which indicates a broken PRNG).
4305 *) Change BN_mod_sqrt() so that it verifies that the input value
4306 is really the square of the return value. (Previously,
4307 BN_mod_sqrt would show GIGO behaviour.)
4310 *) Add named elliptic curves over binary fields from X9.62, SECG,
4311 and WAP/WTLS; add OIDs that were still missing.
4313 [Sheueling Chang Shantz and Douglas Stebila
4314 (Sun Microsystems Laboratories)]
4316 *) Extend the EC library for elliptic curves over binary fields
4317 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
4320 EC_GF2m_simple_method
4324 EC_GROUP_new_curve_GF2m
4325 EC_GROUP_set_curve_GF2m
4326 EC_GROUP_get_curve_GF2m
4327 EC_POINT_set_affine_coordinates_GF2m
4328 EC_POINT_get_affine_coordinates_GF2m
4329 EC_POINT_set_compressed_coordinates_GF2m
4331 Point compression for binary fields is disabled by default for
4332 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
4335 As binary polynomials are represented as BIGNUMs, various members
4336 of the EC_GROUP and EC_POINT data structures can be shared
4337 between the implementations for prime fields and binary fields;
4338 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
4339 are essentially identical to their ..._GFp counterparts.
4340 (For simplicity, the '..._GFp' prefix has been dropped from
4341 various internal method names.)
4343 An internal 'field_div' method (similar to 'field_mul' and
4344 'field_sqr') has been added; this is used only for binary fields.
4346 [Sheueling Chang Shantz and Douglas Stebila
4347 (Sun Microsystems Laboratories)]
4349 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
4350 through methods ('mul', 'precompute_mult').
4352 The generic implementations (now internally called 'ec_wNAF_mul'
4353 and 'ec_wNAF_precomputed_mult') remain the default if these
4354 methods are undefined.
4356 [Sheueling Chang Shantz and Douglas Stebila
4357 (Sun Microsystems Laboratories)]
4359 *) New function EC_GROUP_get_degree, which is defined through
4360 EC_METHOD. For curves over prime fields, this returns the bit
4361 length of the modulus.
4363 [Sheueling Chang Shantz and Douglas Stebila
4364 (Sun Microsystems Laboratories)]
4366 *) New functions EC_GROUP_dup, EC_POINT_dup.
4367 (These simply call ..._new and ..._copy).
4369 [Sheueling Chang Shantz and Douglas Stebila
4370 (Sun Microsystems Laboratories)]
4372 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
4373 Polynomials are represented as BIGNUMs (where the sign bit is not
4374 used) in the following functions [macros]:
4377 BN_GF2m_sub [= BN_GF2m_add]
4378 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
4379 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
4380 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
4382 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
4383 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
4384 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
4385 BN_GF2m_cmp [= BN_ucmp]
4387 (Note that only the 'mod' functions are actually for fields GF(2^m).
4388 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
4390 For some functions, an the irreducible polynomial defining a
4391 field can be given as an 'unsigned int[]' with strictly
4392 decreasing elements giving the indices of those bits that are set;
4393 i.e., p[] represents the polynomial
4394 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
4396 p[0] > p[1] > ... > p[k] = 0.
4397 This applies to the following functions:
4402 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
4403 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
4405 BN_GF2m_mod_sqrt_arr
4406 BN_GF2m_mod_solve_quad_arr
4410 Conversion can be performed by the following functions:
4415 bntest.c has additional tests for binary polynomial arithmetic.
4417 Two implementations for BN_GF2m_mod_div() are available.
4418 The default algorithm simply uses BN_GF2m_mod_inv() and
4419 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
4420 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
4421 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
4423 [Sheueling Chang Shantz and Douglas Stebila
4424 (Sun Microsystems Laboratories)]
4426 *) Add new error code 'ERR_R_DISABLED' that can be used when some
projects / openssl.git / blob