5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Enhance SSL/TLS certificate chain handling to support different
8 chains for each certificate instead of one chain in the parent SSL_CTX.
11 *) Support for fixed DH ciphersuite client authentication: where both
12 server and client use DH certificates with common parameters.
15 *) Support for fixed DH ciphersuites: those requiring DH server
19 *) Transparently support X9.42 DH parameters when calling
20 PEM_read_bio_DHparameters. This means existing applications can handle
21 the new parameter format automatically.
24 *) Initial experimental support for X9.42 DH parameter format: mainly
25 to support use of 'q' parameter for RFC5114 parameters.
28 *) Add DH parameters from RFC5114 including test data to dhtest.
31 *) Update fips_test_suite to support multiple command line options. New
32 test to induce all self test errors in sequence and check expected
36 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
37 sign or verify all in one operation.
40 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
41 test programs and fips_test_suite. Includes functionality to parse
42 the minimal script output of fipsalgest.pl directly.
45 *) Add authorisation parameter to FIPS_module_mode_set().
48 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
51 *) Use separate DRBG fields for internal and external flags. New function
52 FIPS_drbg_health_check() to perform on demand health checking. Add
53 generation tests to fips_test_suite with reduced health check interval to
54 demonstrate periodic health checking. Add "nodh" option to
55 fips_test_suite to skip very slow DH test.
58 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
62 *) More extensive health check for DRBG checking many more failure modes.
63 New function FIPS_selftest_drbg_all() to handle every possible DRBG
64 combination: call this in fips_test_suite.
67 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
68 and POST to handle Dual EC cases.
71 *) Add support for canonical generation of DSA parameter 'g'. See
74 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
75 POST to handle HMAC cases.
78 *) Add functions FIPS_module_version() and FIPS_module_version_text()
79 to return numberical and string versions of the FIPS module number.
82 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
83 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
84 outside the validated module in the FIPS capable OpenSSL.
87 *) Minor change to DRBG entropy callback semantics. In some cases
88 there is no mutiple of the block length between min_len and
89 max_len. Allow the callback to return more than max_len bytes
90 of entropy but discard any extra: it is the callback's responsibility
91 to ensure that the extra data discarded does not impact the
92 requested amount of entropy.
95 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
96 information in FIPS186-3, SP800-57 and SP800-131A.
99 *) CCM support via EVP. Interface is very similar to GCM case except we
100 must supply all data in one chunk (i.e. no update, final) and the
101 message length must be supplied if AAD is used. Add algorithm test
105 *) Initial version of POST overhaul. Add POST callback to allow the status
106 of POST to be monitored and/or failures induced. Modify fips_test_suite
107 to use callback. Always run all selftests even if one fails.
110 *) XTS support including algorithm test driver in the fips_gcmtest program.
111 Note: this does increase the maximum key length from 32 to 64 bytes but
112 there should be no binary compatibility issues as existing applications
113 will never use XTS mode.
116 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
117 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
118 performs algorithm blocking for unapproved PRNG types. Also do not
119 set PRNG type in FIPS_mode_set(): leave this to the application.
120 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
121 the standard OpenSSL PRNG: set additional data to a date time vector.
124 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
125 This shouldn't present any incompatibility problems because applications
126 shouldn't be using these directly and any that are will need to rethink
127 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
130 *) Extensive self tests and health checking required by SP800-90 DRBG.
131 Remove strength parameter from FIPS_drbg_instantiate and always
132 instantiate at maximum supported strength.
135 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
138 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
141 *) New function DH_compute_key_padded() to compute a DH key and pad with
142 leading zeroes if needed: this complies with SP800-56A et al.
145 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
146 anything, incomplete, subject to change and largely untested at present.
149 *) Modify fipscanisteronly build option to only build the necessary object
150 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
153 *) Add experimental option FIPSSYMS to give all symbols in
154 fipscanister.o and FIPS or fips prefix. This will avoid
155 conflicts with future versions of OpenSSL. Add perl script
156 util/fipsas.pl to preprocess assembly language source files
157 and rename any affected symbols.
160 *) Add selftest checks and algorithm block of non-fips algorithms in
161 FIPS mode. Remove DES2 from selftests.
164 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
165 return internal method without any ENGINE dependencies. Add new
166 tiny fips sign and verify functions.
169 *) New build option no-ec2m to disable characteristic 2 code.
172 *) New build option "fipscanisteronly". This only builds fipscanister.o
173 and (currently) associated fips utilities. Uses the file Makefile.fips
174 instead of Makefile.org as the prototype.
177 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
178 Update fips_gcmtest to use IV generator.
181 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
182 setting output buffer to NULL. The *Final function must be
183 called although it will not retrieve any additional data. The tag
184 can be set or retrieved with a ctrl. The IV length is by default 12
185 bytes (96 bits) but can be set to an alternative value. If the IV
186 length exceeds the maximum IV length (currently 16 bytes) it cannot be
190 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
191 underlying do_cipher function handles all cipher semantics itself
192 including padding and finalisation. This is useful if (for example)
193 an ENGINE cipher handles block padding itself. The behaviour of
194 do_cipher is subtly changed if this flag is set: the return value
195 is the number of characters written to the output buffer (zero is
196 no longer an error code) or a negative error code. Also if the
197 input buffer is NULL and length 0 finalisation should be performed.
200 *) If a candidate issuer certificate is already part of the constructed
201 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
204 *) Improve forward-security support: add functions
206 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
207 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
209 for use by SSL/TLS servers; the callback function will be called whenever a
210 new session is created, and gets to decide whether the session may be
211 cached to make it resumable (return 0) or not (return 1). (As by the
212 SSL/TLS protocol specifications, the session_id sent by the server will be
213 empty to indicate that the session is not resumable; also, the server will
214 not generate RFC 4507 (RFC 5077) session tickets.)
216 A simple reasonable callback implementation is to return is_forward_secure.
217 This parameter will be set to 1 or 0 depending on the ciphersuite selected
218 by the SSL/TLS server library, indicating whether it can provide forward
220 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
222 *) New function OPENSSL_gmtime_diff to find the difference in days
223 and seconds between two tm structures. This will be used to provide
224 additional functionality for ASN1_TIME.
227 *) Add -trusted_first option which attempts to find certificates in the
228 trusted store even if an untrusted chain is also supplied.
231 *) Initial experimental support for explicitly trusted non-root CAs.
232 OpenSSL still tries to build a complete chain to a root but if an
233 intermediate CA has a trust setting included that is used. The first
234 setting is used: whether to trust or reject.
237 *) New -verify_name option in command line utilities to set verification
241 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
242 Add CMAC pkey methods.
245 *) Experimental regnegotiation in s_server -www mode. If the client
246 browses /reneg connection is renegotiated. If /renegcert it is
247 renegotiated requesting a certificate.
250 *) Add an "external" session cache for debugging purposes to s_server. This
251 should help trace issues which normally are only apparent in deployed
252 multi-process servers.
255 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
256 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
257 BIO_set_cipher() and some obscure PEM functions were changed so they
258 can now return an error. The RAND changes required a change to the
259 RAND_METHOD structure.
262 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
263 a gcc attribute to warn if the result of a function is ignored. This
264 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
265 whose return value is often ignored.
268 Changes between 1.0.0f and 1.0.1 [xx XXX xxxx]
270 *) The format used for MDC2 RSA signatures is inconsistent between EVP
271 and the RSA_sign/RSA_verify functions. This was made more apparent when
272 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
273 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
274 the correct format in RSA_verify so both forms transparently work.
277 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
278 STRING form instead of a DigestInfo.
281 *) Some servers which support TLS 1.0 can choke if we initially indicate
282 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
283 encrypted premaster secret. As a workaround use the maximum pemitted
284 client version in client hello, this should keep such servers happy
285 and still work with previous versions of OpenSSL.
288 *) Add support for TLS/DTLS heartbeats.
289 [Robin Seggelmann <seggelmann@fh-muenster.de>]
291 *) Add support for SCTP.
292 [Robin Seggelmann <seggelmann@fh-muenster.de>]
294 *) Improved PRNG seeding for VOS.
295 [Paul Green <Paul.Green@stratus.com>]
297 *) Extensive assembler packs updates, most notably:
299 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
300 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
301 - x86_64: bit-sliced AES implementation;
302 - ARM: NEON support, contemporary platforms optimizations;
303 - s390x: z196 support;
304 - *: GHASH and GF(2^m) multiplication implementations;
308 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
309 (removal of unnecessary code)
310 [Peter Sylvester <peter.sylvester@edelweb.fr>]
312 *) Add TLS key material exporter from RFC 5705.
315 *) Add DTLS-SRTP negotiation from RFC 5764.
318 *) Add Next Protocol Negotiation,
319 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
320 disabled with a no-npn flag to config or Configure. Code donated
322 [Adam Langley <agl@google.com> and Ben Laurie]
324 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
325 NIST-P256, NIST-P521, with constant-time single point multiplication on
326 typical inputs. Compiler support for the nonstandard type __uint128_t is
327 required to use this (present in gcc 4.4 and later, for 64-bit builds).
328 Code made available under Apache License version 2.0.
330 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
331 line to include this in your build of OpenSSL, and run "make depend" (or
332 "make update"). This enables the following EC_METHODs:
334 EC_GFp_nistp224_method()
335 EC_GFp_nistp256_method()
336 EC_GFp_nistp521_method()
338 EC_GROUP_new_by_curve_name() will automatically use these (while
339 EC_GROUP_new_curve_GFp() currently prefers the more flexible
341 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
343 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
344 all platforms. Move ssize_t definition from e_os.h to the public
345 header file e_os2.h as it now appears in public header file cms.h
348 *) New -sigopt option to the ca, req and x509 utilities. Additional
349 signature parameters can be passed using this option and in
353 *) Add RSA PSS signing function. This will generate and set the
354 appropriate AlgorithmIdentifiers for PSS based on those in the
355 corresponding EVP_MD_CTX structure. No application support yet.
358 *) Support for companion algorithm specific ASN1 signing routines.
359 New function ASN1_item_sign_ctx() signs a pre-initialised
360 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
361 the appropriate parameters.
364 *) Add new algorithm specific ASN1 verification initialisation function
365 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
366 handling will be the same no matter what EVP_PKEY_METHOD is used.
367 Add a PSS handler to support verification of PSS signatures: checked
368 against a number of sample certificates.
371 *) Add signature printing for PSS. Add PSS OIDs.
372 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
374 *) Add algorithm specific signature printing. An individual ASN1 method
375 can now print out signatures instead of the standard hex dump.
377 More complex signatures (e.g. PSS) can print out more meaningful
378 information. Include DSA version that prints out the signature
382 *) Password based recipient info support for CMS library: implementing
386 *) Split password based encryption into PBES2 and PBKDF2 functions. This
387 neatly separates the code into cipher and PBE sections and is required
388 for some algorithms that split PBES2 into separate pieces (such as
392 *) Session-handling fixes:
393 - Fix handling of connections that are resuming with a session ID,
394 but also support Session Tickets.
395 - Fix a bug that suppressed issuing of a new ticket if the client
396 presented a ticket with an expired session.
397 - Try to set the ticket lifetime hint to something reasonable.
398 - Make tickets shorter by excluding irrelevant information.
399 - On the client side, don't ignore renewed tickets.
400 [Adam Langley, Bodo Moeller (Google)]
402 *) Fix PSK session representation.
405 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
407 This work was sponsored by Intel.
410 *) Add GCM support to TLS library. Some custom code is needed to split
411 the IV between the fixed (from PRF) and explicit (from TLS record)
412 portions. This adds all GCM ciphersuites supported by RFC5288 and
413 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
414 add a special AESGCM string for GCM only.
417 *) Expand range of ctrls for AES GCM. Permit setting invocation
418 field on decrypt and retrieval of invocation field only on encrypt.
421 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
422 As required by RFC5289 these ciphersuites cannot be used if for
423 versions of TLS earlier than 1.2.
426 *) For FIPS capable OpenSSL interpret a NULL default public key method
427 as unset and return the appopriate default but do *not* set the default.
428 This means we can return the appopriate method in applications that
429 swicth between FIPS and non-FIPS modes.
432 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
433 ENGINE is used then we cannot handle that in the FIPS module so we
434 keep original code iff non-FIPS operations are allowed.
437 *) Add -attime option to openssl utilities.
438 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
440 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
443 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
444 FIPS EC methods unconditionally for now.
447 *) New build option no-ec2m to disable characteristic 2 code.
450 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
451 all cases can be covered as some introduce binary incompatibilities.
454 *) Redirect RSA operations to FIPS module including keygen,
455 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
458 *) Add similar low level API blocking to ciphers.
461 *) Low level digest APIs are not approved in FIPS mode: any attempt
462 to use these will cause a fatal error. Applications that *really* want
463 to use them can use the private_* version instead.
466 *) Redirect cipher operations to FIPS module for FIPS builds.
469 *) Redirect digest operations to FIPS module for FIPS builds.
472 *) Update build system to add "fips" flag which will link in fipscanister.o
473 for static and shared library builds embedding a signature if needed.
476 *) Output TLS supported curves in preference order instead of numerical
477 order. This is currently hardcoded for the highest order curves first.
478 This should be configurable so applications can judge speed vs strength.
481 *) Add TLS v1.2 server support for client authentication.
484 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
488 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
489 FIPS modules versions.
492 *) Add TLS v1.2 client side support for client authentication. Keep cache
493 of handshake records longer as we don't know the hash algorithm to use
494 until after the certificate request message is received.
497 *) Initial TLS v1.2 client support. Add a default signature algorithms
498 extension including all the algorithms we support. Parse new signature
499 format in client key exchange. Relax some ECC signing restrictions for
500 TLS v1.2 as indicated in RFC5246.
503 *) Add server support for TLS v1.2 signature algorithms extension. Switch
504 to new signature format when needed using client digest preference.
505 All server ciphersuites should now work correctly in TLS v1.2. No client
506 support yet and no support for client certificates.
509 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
510 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
511 ciphersuites. At present only RSA key exchange ciphersuites work with
512 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
513 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
514 and version checking.
517 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
518 with this defined it will not be affected by any changes to ssl internal
519 structures. Add several utility functions to allow openssl application
520 to work with OPENSSL_NO_SSL_INTERN defined.
524 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
526 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
529 *) Permit abbreviated handshakes when renegotiating using the function
530 SSL_renegotiate_abbreviated().
531 [Robin Seggelmann <seggelmann@fh-muenster.de>]
533 *) Add call to ENGINE_register_all_complete() to
534 ENGINE_load_builtin_engines(), so some implementations get used
535 automatically instead of needing explicit application support.
538 *) Add support for TLS key exporter as described in RFC5705.
539 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
541 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
542 a few changes are required:
544 Add SSL_OP_NO_TLSv1_1 flag.
546 Update version checking logic to handle version 1.1.
547 Add explicit IV handling (ported from DTLS code).
548 Add command line options to s_client/s_server.
551 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
553 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
554 Thanks to Antonio Martin, Enterprise Secure Access Research and
555 Development, Cisco Systems, Inc. for discovering this bug and
556 preparing a fix. (CVE-2012-0050)
559 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
561 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
562 of the Vaudenay padding oracle attack on CBC mode encryption
563 which enables an efficient plaintext recovery attack against
564 the OpenSSL implementation of DTLS. Their attack exploits timing
565 differences arising during decryption processing. A research
566 paper describing this attack can be found at:
567 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
568 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
569 Security Group at Royal Holloway, University of London
570 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
571 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
572 for preparing the fix. (CVE-2011-4108)
573 [Robin Seggelmann, Michael Tuexen]
575 *) Clear bytes used for block padding of SSL 3.0 records.
577 [Adam Langley (Google)]
579 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
580 Kadianakis <desnacked@gmail.com> for discovering this issue and
581 Adam Langley for preparing the fix. (CVE-2011-4619)
582 [Adam Langley (Google)]
584 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
585 [Andrey Kulikov <amdeich@gmail.com>]
587 *) Prevent malformed RFC3779 data triggering an assertion failure.
588 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
589 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
590 [Rob Austein <sra@hactrn.net>]
592 *) Improved PRNG seeding for VOS.
593 [Paul Green <Paul.Green@stratus.com>]
595 *) Fix ssl_ciph.c set-up race.
596 [Adam Langley (Google)]
598 *) Fix spurious failures in ecdsatest.c.
599 [Emilia Käsper (Google)]
601 *) Fix the BIO_f_buffer() implementation (which was mixing different
602 interpretations of the '..._len' fields).
603 [Adam Langley (Google)]
605 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
606 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
607 threads won't reuse the same blinding coefficients.
609 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
610 lock to call BN_BLINDING_invert_ex, and avoids one use of
611 BN_BLINDING_update for each BN_BLINDING structure (previously,
612 the last update always remained unused).
613 [Emilia Käsper (Google)]
615 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
616 [Bob Buckholz (Google)]
618 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
620 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
621 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
622 [Kaspar Brand <ossl@velox.ch>]
624 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
625 for multi-threaded use of ECDH. (CVE-2011-3210)
626 [Adam Langley (Google)]
628 *) Fix x509_name_ex_d2i memory leak on bad inputs.
631 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
632 signature public key algorithm by using OID xref utilities instead.
633 Before this you could only use some ECC ciphersuites with SHA1 only.
636 *) Add protection against ECDSA timing attacks as mentioned in the paper
637 by Billy Bob Brumley and Nicola Tuveri, see:
639 http://eprint.iacr.org/2011/232.pdf
641 [Billy Bob Brumley and Nicola Tuveri]
643 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
645 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
646 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
648 *) Fix bug in string printing code: if *any* escaping is enabled we must
649 escape the escape character (backslash) or the resulting string is
653 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
655 *) Disable code workaround for ancient and obsolete Netscape browsers
656 and servers: an attacker can use it in a ciphersuite downgrade attack.
657 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
660 *) Fixed J-PAKE implementation error, originally discovered by
661 Sebastien Martini, further info and confirmation from Stefan
662 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
665 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
667 *) Fix extension code to avoid race conditions which can result in a buffer
668 overrun vulnerability: resumed sessions must not be modified as they can
669 be shared by multiple threads. CVE-2010-3864
672 *) Fix WIN32 build system to correctly link an ENGINE directory into
676 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
678 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
680 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
682 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
684 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
685 context. The operation can be customised via the ctrl mechanism in
686 case ENGINEs want to include additional functionality.
689 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
692 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
693 output hashes compatible with older versions of OpenSSL.
694 [Willy Weisz <weisz@vcpc.univie.ac.at>]
696 *) Fix compression algorithm handling: if resuming a session use the
697 compression algorithm of the resumed session instead of determining
698 it from client hello again. Don't allow server to change algorithm.
701 *) Add load_crls() function to apps tidying load_certs() too. Add option
702 to verify utility to allow additional CRLs to be included.
705 *) Update OCSP request code to permit adding custom headers to the request:
706 some responders need this.
709 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
711 [Julia Lawall <julia@diku.dk>]
713 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
714 needlessly dereferenced structures, used obsolete functions and
715 didn't handle all updated verify codes correctly.
718 *) Disable MD2 in the default configuration.
721 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
722 indicate the initial BIO being pushed or popped. This makes it possible
723 to determine whether the BIO is the one explicitly called or as a result
724 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
725 it handles reference counts correctly and doesn't zero out the I/O bio
726 when it is not being explicitly popped. WARNING: applications which
727 included workarounds for the old buggy behaviour will need to be modified
728 or they could free up already freed BIOs.
731 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
732 renaming to all platforms (within the 0.9.8 branch, this was
733 done conditionally on Netware platforms to avoid a name clash).
734 [Guenter <lists@gknw.net>]
736 *) Add ECDHE and PSK support to DTLS.
737 [Michael Tuexen <tuexen@fh-muenster.de>]
739 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
743 *) Add "missing" function EVP_MD_flags() (without this the only way to
744 retrieve a digest flags is by accessing the structure directly. Update
745 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
746 or cipher is registered as in the "from" argument. Print out all
747 registered digests in the dgst usage message instead of manually
748 attempting to work them out.
751 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
752 this allows the use of compression and extensions. Change default cipher
753 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
754 by default unless an application cipher string requests it.
757 *) Alter match criteria in PKCS12_parse(). It used to try to use local
758 key ids to find matching certificates and keys but some PKCS#12 files
759 don't follow the (somewhat unwritten) rules and this strategy fails.
760 Now just gather all certificates together and the first private key
761 then look for the first certificate that matches the key.
764 *) Support use of registered digest and cipher names for dgst and cipher
765 commands instead of having to add each one as a special case. So now
772 openssl dgst -sha256 foo
774 and this works for ENGINE based algorithms too.
778 *) Update Gost ENGINE to support parameter files.
779 [Victor B. Wagner <vitus@cryptocom.ru>]
781 *) Support GeneralizedTime in ca utility.
782 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
784 *) Enhance the hash format used for certificate directory links. The new
785 form uses the canonical encoding (meaning equivalent names will work
786 even if they aren't identical) and uses SHA1 instead of MD5. This form
787 is incompatible with the older format and as a result c_rehash should
788 be used to rebuild symbolic links.
791 *) Make PKCS#8 the default write format for private keys, replacing the
792 traditional format. This form is standardised, more secure and doesn't
793 include an implicit MD5 dependency.
796 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
797 committed to OpenSSL should pass this lot as a minimum.
800 *) Add session ticket override functionality for use by EAP-FAST.
801 [Jouni Malinen <j@w1.fi>]
803 *) Modify HMAC functions to return a value. Since these can be implemented
804 in an ENGINE errors can occur.
807 *) Type-checked OBJ_bsearch_ex.
810 *) Type-checked OBJ_bsearch. Also some constification necessitated
811 by type-checking. Still to come: TXT_DB, bsearch(?),
812 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
816 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
817 seconds to a tm structure directly, instead of going through OS
818 specific date routines. This avoids any issues with OS routines such
819 as the year 2038 bug. New *_adj() functions for ASN1 time structures
820 and X509_time_adj_ex() to cover the extended range. The existing
821 X509_time_adj() is still usable and will no longer have any date issues.
824 *) Delta CRL support. New use deltas option which will attempt to locate
825 and search any appropriate delta CRLs available.
827 This work was sponsored by Google.
830 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
831 code and add additional score elements. Validate alternate CRL paths
832 as part of the CRL checking and indicate a new error "CRL path validation
833 error" in this case. Applications wanting additional details can use
834 the verify callback and check the new "parent" field. If this is not
835 NULL CRL path validation is taking place. Existing applications wont
836 see this because it requires extended CRL support which is off by
839 This work was sponsored by Google.
842 *) Support for freshest CRL extension.
844 This work was sponsored by Google.
847 *) Initial indirect CRL support. Currently only supported in the CRLs
848 passed directly and not via lookup. Process certificate issuer
849 CRL entry extension and lookup CRL entries by bother issuer name
850 and serial number. Check and process CRL issuer entry in IDP extension.
852 This work was sponsored by Google.
855 *) Add support for distinct certificate and CRL paths. The CRL issuer
856 certificate is validated separately in this case. Only enabled if
857 an extended CRL support flag is set: this flag will enable additional
858 CRL functionality in future.
860 This work was sponsored by Google.
863 *) Add support for policy mappings extension.
865 This work was sponsored by Google.
868 *) Fixes to pathlength constraint, self issued certificate handling,
869 policy processing to align with RFC3280 and PKITS tests.
871 This work was sponsored by Google.
874 *) Support for name constraints certificate extension. DN, email, DNS
875 and URI types are currently supported.
877 This work was sponsored by Google.
880 *) To cater for systems that provide a pointer-based thread ID rather
881 than numeric, deprecate the current numeric thread ID mechanism and
882 replace it with a structure and associated callback type. This
883 mechanism allows a numeric "hash" to be extracted from a thread ID in
884 either case, and on platforms where pointers are larger than 'long',
885 mixing is done to help ensure the numeric 'hash' is usable even if it
886 can't be guaranteed unique. The default mechanism is to use "&errno"
887 as a pointer-based thread ID to distinguish between threads.
889 Applications that want to provide their own thread IDs should now use
890 CRYPTO_THREADID_set_callback() to register a callback that will call
891 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
893 Note that ERR_remove_state() is now deprecated, because it is tied
894 to the assumption that thread IDs are numeric. ERR_remove_state(0)
895 to free the current thread's error state should be replaced by
896 ERR_remove_thread_state(NULL).
898 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
899 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
900 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
901 application was previously providing a numeric thread callback that
902 was inappropriate for distinguishing threads, then uniqueness might
903 have been obtained with &errno that happened immediately in the
904 intermediate development versions of OpenSSL; this is no longer the
905 case, the numeric thread callback will now override the automatic use
907 [Geoff Thorpe, with help from Bodo Moeller]
909 *) Initial support for different CRL issuing certificates. This covers a
910 simple case where the self issued certificates in the chain exist and
911 the real CRL issuer is higher in the existing chain.
913 This work was sponsored by Google.
916 *) Removed effectively defunct crypto/store from the build.
919 *) Revamp of STACK to provide stronger type-checking. Still to come:
920 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
921 ASN1_STRING, CONF_VALUE.
924 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
925 RAM on SSL connections. This option can save about 34k per idle SSL.
928 *) Revamp of LHASH to provide stronger type-checking. Still to come:
929 STACK, TXT_DB, bsearch, qsort.
932 *) Initial support for Cryptographic Message Syntax (aka CMS) based
933 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
934 support for data, signedData, compressedData, digestedData and
935 encryptedData, envelopedData types included. Scripts to check against
936 RFC4134 examples draft and interop and consistency checks of many
937 content types and variants.
940 *) Add options to enc utility to support use of zlib compression BIO.
943 *) Extend mk1mf to support importing of options and assembly language
944 files from Configure script, currently only included in VC-WIN32.
945 The assembly language rules can now optionally generate the source
946 files from the associated perl scripts.
949 *) Implement remaining functionality needed to support GOST ciphersuites.
950 Interop testing has been performed using CryptoPro implementations.
951 [Victor B. Wagner <vitus@cryptocom.ru>]
953 *) s390x assembler pack.
956 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
960 *) Implement Opaque PRF Input TLS extension as specified in
961 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
962 official specification yet and no extension type assignment by
963 IANA exists, this extension (for now) will have to be explicitly
964 enabled when building OpenSSL by providing the extension number
965 to use. For example, specify an option
967 -DTLSEXT_TYPE_opaque_prf_input=0x9527
969 to the "config" or "Configure" script to enable the extension,
970 assuming extension number 0x9527 (which is a completely arbitrary
971 and unofficial assignment based on the MD5 hash of the Internet
972 Draft). Note that by doing so, you potentially lose
973 interoperability with other TLS implementations since these might
974 be using the same extension number for other purposes.
976 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
977 opaque PRF input value to use in the handshake. This will create
978 an interal copy of the length-'len' string at 'src', and will
979 return non-zero for success.
981 To get more control and flexibility, provide a callback function
984 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
985 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
989 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
992 Callback function 'cb' will be called in handshakes, and is
993 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
994 Argument 'arg' is for application purposes (the value as given to
995 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
996 be provided to the callback function). The callback function
997 has to return non-zero to report success: usually 1 to use opaque
998 PRF input just if possible, or 2 to enforce use of the opaque PRF
999 input. In the latter case, the library will abort the handshake
1000 if opaque PRF input is not successfully negotiated.
1002 Arguments 'peerinput' and 'len' given to the callback function
1003 will always be NULL and 0 in the case of a client. A server will
1004 see the client's opaque PRF input through these variables if
1005 available (NULL and 0 otherwise). Note that if the server
1006 provides an opaque PRF input, the length must be the same as the
1007 length of the client's opaque PRF input.
1009 Note that the callback function will only be called when creating
1010 a new session (session resumption can resume whatever was
1011 previously negotiated), and will not be called in SSL 2.0
1012 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1013 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1014 for applications that need to enforce opaque PRF input.
1018 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1021 [Victor B. Wagner <vitus@cryptocom.ru>]
1023 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1024 RFC4507bis. The encrypted ticket format is an encrypted encoded
1025 SSL_SESSION structure, that way new session features are automatically
1028 If a client application caches session in an SSL_SESSION structure
1029 support is transparent because tickets are now stored in the encoded
1032 The SSL_CTX structure automatically generates keys for ticket
1033 protection in servers so again support should be possible
1034 with no application modification.
1036 If a client or server wishes to disable RFC4507 support then the option
1037 SSL_OP_NO_TICKET can be set.
1039 Add a TLS extension debugging callback to allow the contents of any client
1040 or server extensions to be examined.
1042 This work was sponsored by Google.
1045 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1046 OpenSSL should now compile cleanly on gcc 4.2
1047 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1049 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1050 support including streaming MAC support: this is required for GOST
1051 ciphersuite support.
1052 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1054 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1055 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1056 to output in BER and PEM format.
1059 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1060 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1061 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1062 ENGINE support for HMAC keys which are unextractable. New -mac and
1063 -macopt options to dgst utility.
1066 *) New option -sigopt to dgst utility. Update dgst to use
1067 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1068 alternative signing paramaters such as X9.31 or PSS in the dgst
1072 *) Change ssl_cipher_apply_rule(), the internal function that does
1073 the work each time a ciphersuite string requests enabling
1074 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1075 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1076 the order of disabled ciphersuites such that those ciphersuites
1077 that most recently went from enabled to disabled not only stay
1078 in order with respect to each other, but also have higher priority
1079 than other disabled ciphersuites the next time ciphersuites are
1082 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1083 the same ciphersuites as with "HIGH" alone, but in a specific
1084 order where the PSK ciphersuites come first (since they are the
1085 most recently disabled ciphersuites when "HIGH" is parsed).
1087 Also, change ssl_create_cipher_list() (using this new
1088 funcionality) such that between otherwise identical
1089 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1093 *) Change ssl_create_cipher_list() so that it automatically
1094 arranges the ciphersuites in reasonable order before starting
1095 to process the rule string. Thus, the definition for "DEFAULT"
1096 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1097 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1098 This makes it much easier to arrive at a reasonable default order
1099 in applications for which anonymous ciphers are OK (meaning
1100 that you can't actually use DEFAULT).
1101 [Bodo Moeller; suggested by Victor Duchovni]
1103 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1104 processing) into multiple integers instead of setting
1105 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1106 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1107 (These masks as well as the individual bit definitions are hidden
1108 away into the non-exported interface ssl/ssl_locl.h, so this
1109 change to the definition of the SSL_CIPHER structure shouldn't
1110 affect applications.) This give us more bits for each of these
1111 categories, so there is no longer a need to coagulate AES128 and
1112 AES256 into a single algorithm bit, and to coagulate Camellia128
1113 and Camellia256 into a single algorithm bit, which has led to all
1116 Thus, among other things, the kludge introduced in 0.9.7m and
1117 0.9.8e for masking out AES256 independently of AES128 or masking
1118 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1120 With the change, we also introduce new ciphersuite aliases that
1121 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1125 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1126 Use the leftmost N bytes of the signature input if the input is
1127 larger than the prime q (with N being the size in bytes of q).
1130 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1131 it yet and it is largely untested.
1134 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1137 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1138 some compilers (gcc 4.2 and later) reject their use. Safestack is
1139 reimplemented. Update ASN1 to avoid use of legacy functions.
1142 *) Win32/64 targets are linked with Winsock2.
1145 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1146 to external functions. This can be used to increase CRL handling
1147 efficiency especially when CRLs are very large by (for example) storing
1148 the CRL revoked certificates in a database.
1151 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1152 new CRLs added to a directory can be used. New command line option
1153 -verify_return_error to s_client and s_server. This causes real errors
1154 to be returned by the verify callback instead of carrying on no matter
1155 what. This reflects the way a "real world" verify callback would behave.
1158 *) GOST engine, supporting several GOST algorithms and public key formats.
1159 Kindly donated by Cryptocom.
1162 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1163 partitioned by DP are handled but no indirect CRL or reason partitioning
1164 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1165 selected via a scoring technique which handles IDP and AKID in CRLs.
1168 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1169 will ultimately be used for all verify operations: this will remove the
1170 X509_STORE dependency on certificate verification and allow alternative
1171 lookup methods. X509_STORE based implementations of these two callbacks.
1174 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1175 Modify get_crl() to find a valid (unexpired) CRL if possible.
1178 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1179 this would be called X509_CRL_cmp() but that name is already used by
1180 a function that just compares CRL issuer names. Cache several CRL
1181 extensions in X509_CRL structure and cache CRLDP in X509.
1184 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1185 this maps equivalent X509_NAME structures into a consistent structure.
1186 Name comparison can then be performed rapidly using memcmp().
1189 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1193 *) Allow digests to supply their own micalg string for S/MIME type using
1194 the ctrl EVP_MD_CTRL_MICALG.
1197 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1198 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1199 ctrl. It can then customise the structure before and/or after signing
1203 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1204 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1205 to free up any added signature OIDs.
1208 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1209 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1210 digest and cipher tables. New options added to openssl utility:
1211 list-message-digest-algorithms and list-cipher-algorithms.
1214 *) Change the array representation of binary polynomials: the list
1215 of degrees of non-zero coefficients is now terminated with -1.
1216 Previously it was terminated with 0, which was also part of the
1217 value; thus, the array representation was not applicable to
1218 polynomials where t^0 has coefficient zero. This change makes
1219 the array representation useful in a more general context.
1222 *) Various modifications and fixes to SSL/TLS cipher string
1223 handling. For ECC, the code now distinguishes between fixed ECDH
1224 with RSA certificates on the one hand and with ECDSA certificates
1225 on the other hand, since these are separate ciphersuites. The
1226 unused code for Fortezza ciphersuites has been removed.
1228 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1229 (not "ECDHE"). For consistency with the code for DH
1230 certificates, use of ECDH certificates is now considered ECDH
1231 authentication, not RSA or ECDSA authentication (the latter is
1232 merely the CA's signing algorithm and not actively used in the
1235 The temporary ciphersuite alias "ECCdraft" is no longer
1236 available, and ECC ciphersuites are no longer excluded from "ALL"
1237 and "DEFAULT". The following aliases now exist for RFC 4492
1238 ciphersuites, most of these by analogy with the DH case:
1240 kECDHr - ECDH cert, signed with RSA
1241 kECDHe - ECDH cert, signed with ECDSA
1242 kECDH - ECDH cert (signed with either RSA or ECDSA)
1243 kEECDH - ephemeral ECDH
1244 ECDH - ECDH cert or ephemeral ECDH
1250 AECDH - anonymous ECDH
1251 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1255 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1256 Use correct micalg parameters depending on digest(s) in signed message.
1259 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1260 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1263 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1264 an engine to register a method. Add ENGINE lookups for methods and
1265 functional reference processing.
1268 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1269 EVP_{Sign,Verify}* which allow an application to customise the signature
1273 *) New -resign option to smime utility. This adds one or more signers
1274 to an existing PKCS#7 signedData structure. Also -md option to use an
1275 alternative message digest algorithm for signing.
1278 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1279 create PKCS7 structures containing multiple signers. Update smime
1280 application to support multiple signers.
1283 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1287 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1288 Reorganize PBE internals to lookup from a static table using NIDs,
1289 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1290 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1291 PRF which will be automatically used with PBES2.
1294 *) Replace the algorithm specific calls to generate keys in "req" with the
1298 *) Update PKCS#7 enveloped data routines to use new API. This is now
1299 supported by any public key method supporting the encrypt operation. A
1300 ctrl is added to allow the public key algorithm to examine or modify
1301 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1305 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1306 a default digest type to use. In most cases this will be SHA1 but some
1307 algorithms (such as GOST) need to specify an alternative digest. The
1308 return value indicates how strong the prefernce is 1 means optional and
1309 2 is mandatory (that is it is the only supported type). Modify
1310 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1311 use the default md. Update openssl utilities to use the default digest
1312 type for signing if it is not explicitly indicated.
1315 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1316 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1317 signing method from the key type. This effectively removes the link
1318 between digests and public key types.
1321 *) Add an OID cross reference table and utility functions. Its purpose is to
1322 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1323 rsaEncryption. This will allow some of the algorithm specific hackery
1324 needed to use the correct OID to be removed.
1327 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1328 structures for PKCS7_sign(). They are now set up by the relevant public
1332 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1335 *) Add support for key derivation (agreement) in the API, DH method and
1339 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1340 public and private key formats. As a side effect these add additional
1341 command line functionality not previously available: DSA signatures can be
1342 generated and verified using pkeyutl and DH key support and generation in
1347 [Oliver Tappe <zooey@hirschkaefer.de>]
1349 *) New make target "install_html_docs" installs HTML renditions of the
1351 [Oliver Tappe <zooey@hirschkaefer.de>]
1353 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1354 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1355 support key and parameter generation and add initial key generation
1356 functionality for RSA.
1359 *) Add functions for main EVP_PKEY_method operations. The undocumented
1360 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1361 EVP_PKEY_{encrypt,decrypt}_old.
1364 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1365 key API, doesn't do much yet.
1368 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1369 public key algorithms. New option to openssl utility:
1370 "list-public-key-algorithms" to print out info.
1373 *) Implement the Supported Elliptic Curves Extension for
1374 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1377 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1378 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1381 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1382 utilities such as rsa, dsa, dsaparam etc except they process any key
1386 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1387 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1388 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1392 *) Initial support for pluggable public key ASN1.
1393 De-spaghettify the public key ASN1 handling. Move public and private
1394 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1395 algorithm specific handling to a single module within the relevant
1396 algorithm directory. Add functions to allow (near) opaque processing
1397 of public and private key structures.
1400 *) Implement the Supported Point Formats Extension for
1401 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1404 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1405 for the psk identity [hint] and the psk callback functions to the
1406 SSL_SESSION, SSL and SSL_CTX structure.
1409 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1413 SSL_CTX_use_psk_identity_hint
1414 SSL_get_psk_identity_hint
1415 SSL_get_psk_identity
1416 SSL_use_psk_identity_hint
1418 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1420 *) Add RFC 3161 compliant time stamp request creation, response generation
1421 and response verification functionality.
1422 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1424 *) Add initial support for TLS extensions, specifically for the server_name
1425 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1426 have new members for a host name. The SSL data structure has an
1427 additional member SSL_CTX *initial_ctx so that new sessions can be
1428 stored in that context to allow for session resumption, even after the
1429 SSL has been switched to a new SSL_CTX in reaction to a client's
1430 server_name extension.
1432 New functions (subject to change):
1434 SSL_get_servername()
1435 SSL_get_servername_type()
1438 New CTRL codes and macros (subject to change):
1440 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1441 - SSL_CTX_set_tlsext_servername_callback()
1442 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1443 - SSL_CTX_set_tlsext_servername_arg()
1444 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1446 openssl s_client has a new '-servername ...' option.
1448 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1449 '-key2 ...', '-servername_fatal' (subject to change). This allows
1450 testing the HostName extension for a specific single host name ('-cert'
1451 and '-key' remain fallbacks for handshakes without HostName
1452 negotiation). If the unrecogninzed_name alert has to be sent, this by
1453 default is a warning; it becomes fatal with the '-servername_fatal'
1456 [Peter Sylvester, Remy Allais, Christophe Renou]
1458 *) Whirlpool hash implementation is added.
1461 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1462 bn(64,32). Because of instruction set limitations it doesn't have
1463 any negative impact on performance. This was done mostly in order
1464 to make it possible to share assembler modules, such as bn_mul_mont
1465 implementations, between 32- and 64-bit builds without hassle.
1468 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1469 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1473 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1474 dedicated Montgomery multiplication procedure, is introduced.
1475 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1476 "64-bit" performance on certain 32-bit targets.
1479 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1480 in SSL structures. New SSL ctrl to set maximum send fragment size.
1481 Save memory by seeting the I/O buffer sizes dynamically instead of
1482 using the maximum available value.
1485 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1486 in addition to the text details.
1489 *) Very, very preliminary EXPERIMENTAL support for printing of general
1490 ASN1 structures. This currently produces rather ugly output and doesn't
1491 handle several customised structures at all.
1494 *) Integrated support for PVK file format and some related formats such
1495 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1496 these in the 'rsa' and 'dsa' utilities.
1499 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1502 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1503 place for the (very old) "NETSCAPE" format certificates which are now
1504 handled using new ASN1 code equivalents.
1507 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1508 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1509 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1512 *) Modify CRL distribution points extension code to print out previously
1513 unsupported fields. Enhance extension setting code to allow setting of
1517 *) Add print and set support for Issuing Distribution Point CRL extension.
1520 *) Change 'Configure' script to enable Camellia by default.
1523 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
1525 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1526 Thanks to Antonio Martin, Enterprise Secure Access Research and
1527 Development, Cisco Systems, Inc. for discovering this bug and
1528 preparing a fix. (CVE-2012-0050)
1531 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1533 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1534 of the Vaudenay padding oracle attack on CBC mode encryption
1535 which enables an efficient plaintext recovery attack against
1536 the OpenSSL implementation of DTLS. Their attack exploits timing
1537 differences arising during decryption processing. A research
1538 paper describing this attack can be found at:
1539 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1540 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1541 Security Group at Royal Holloway, University of London
1542 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1543 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1544 for preparing the fix. (CVE-2011-4108)
1545 [Robin Seggelmann, Michael Tuexen]
1547 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1548 [Ben Laurie, Kasper <ekasper@google.com>]
1550 *) Clear bytes used for block padding of SSL 3.0 records.
1552 [Adam Langley (Google)]
1554 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1555 Kadianakis <desnacked@gmail.com> for discovering this issue and
1556 Adam Langley for preparing the fix. (CVE-2011-4619)
1557 [Adam Langley (Google)]
1559 *) Prevent malformed RFC3779 data triggering an assertion failure.
1560 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1561 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1562 [Rob Austein <sra@hactrn.net>]
1564 *) Fix ssl_ciph.c set-up race.
1565 [Adam Langley (Google)]
1567 *) Fix spurious failures in ecdsatest.c.
1568 [Emilia Käsper (Google)]
1570 *) Fix the BIO_f_buffer() implementation (which was mixing different
1571 interpretations of the '..._len' fields).
1572 [Adam Langley (Google)]
1574 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1575 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1576 threads won't reuse the same blinding coefficients.
1578 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1579 lock to call BN_BLINDING_invert_ex, and avoids one use of
1580 BN_BLINDING_update for each BN_BLINDING structure (previously,
1581 the last update always remained unused).
1582 [Emilia Käsper (Google)]
1584 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1585 for multi-threaded use of ECDH.
1586 [Adam Langley (Google)]
1588 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1591 *) Add protection against ECDSA timing attacks as mentioned in the paper
1592 by Billy Bob Brumley and Nicola Tuveri, see:
1594 http://eprint.iacr.org/2011/232.pdf
1596 [Billy Bob Brumley and Nicola Tuveri]
1598 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1600 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1601 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1603 *) Fix bug in string printing code: if *any* escaping is enabled we must
1604 escape the escape character (backslash) or the resulting string is
1608 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1610 *) Disable code workaround for ancient and obsolete Netscape browsers
1611 and servers: an attacker can use it in a ciphersuite downgrade attack.
1612 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1615 *) Fixed J-PAKE implementation error, originally discovered by
1616 Sebastien Martini, further info and confirmation from Stefan
1617 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1620 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1622 *) Fix extension code to avoid race conditions which can result in a buffer
1623 overrun vulnerability: resumed sessions must not be modified as they can
1624 be shared by multiple threads. CVE-2010-3864
1627 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1630 *) Don't reencode certificate when calculating signature: cache and use
1631 the original encoding instead. This makes signature verification of
1632 some broken encodings work correctly.
1635 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1636 is also one of the inputs.
1637 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1639 *) Don't repeatedly append PBE algorithms to table if they already exist.
1640 Sort table on each new add. This effectively makes the table read only
1641 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1645 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1647 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1650 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1651 access or freeing data twice (CVE-2010-0742)
1652 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1654 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1655 common in certificates and some applications which only call
1656 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1660 Reduce copying into .apps and .test in makevms.com
1661 Don't try to use blank CA certificate in CA.com
1662 Allow use of C files from original directories in maketests.com
1663 [Steven M. Schweda" <sms@antinode.info>]
1665 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1667 *) When rejecting SSL/TLS records due to an incorrect version number, never
1668 update s->server with a new major version number. As of
1669 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1670 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1671 the previous behavior could result in a read attempt at NULL when
1672 receiving specific incorrect SSL/TLS records once record payload
1673 protection is active. (CVE-2010-0740)
1674 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1676 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1677 could be crashed if the relevant tables were not present (e.g. chrooted).
1678 [Tomas Hoger <thoger@redhat.com>]
1680 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1682 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1683 [Martin Olsson, Neel Mehta]
1685 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1686 accommodate for stack sorting, always a write lock!).
1689 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1690 excessive delays in the RAND_poll(): over a minute. As a workaround
1691 include a time check in the inner Heap32Next loop too.
1694 *) The code that handled flushing of data in SSL/TLS originally used the
1695 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1696 the problem outlined in PR#1949. The fix suggested there however can
1697 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1698 of Apache). So instead simplify the code to flush unconditionally.
1699 This should be fine since flushing with no data to flush is a no op.
1702 *) Handle TLS versions 2.0 and later properly and correctly use the
1703 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1704 off ancient servers have a habit of sticking around for a while...
1707 *) Modify compression code so it frees up structures without using the
1708 ex_data callbacks. This works around a problem where some applications
1709 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1710 restarting) then use compression (e.g. SSL with compression) later.
1711 This results in significant per-connection memory leaks and
1712 has caused some security issues including CVE-2008-1678 and
1716 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1717 change when encrypting or decrypting.
1720 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1721 connect and renegotiate with servers which do not support RI.
1722 Until RI is more widely deployed this option is enabled by default.
1725 *) Add "missing" ssl ctrls to clear options and mode.
1728 *) If client attempts to renegotiate and doesn't support RI respond with
1729 a no_renegotiation alert as required by RFC5746. Some renegotiating
1730 TLS clients will continue a connection gracefully when they receive
1731 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1732 waiting for a server hello which it will never receive. Now we treat a
1733 received no_renegotiation alert as a fatal error. This is because
1734 applications requesting a renegotiation might well expect it to succeed
1735 and would have no code in place to handle the server denying it so the
1736 only safe thing to do is to terminate the connection.
1739 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1740 peer supports secure renegotiation and 0 otherwise. Print out peer
1741 renegotiation support in s_client/s_server.
1744 *) Replace the highly broken and deprecated SPKAC certification method with
1745 the updated NID creation version. This should correctly handle UTF8.
1748 *) Implement RFC5746. Re-enable renegotiation but require the extension
1749 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1750 turns out to be a bad idea. It has been replaced by
1751 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1752 SSL_CTX_set_options(). This is really not recommended unless you
1753 know what you are doing.
1754 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1756 *) Fixes to stateless session resumption handling. Use initial_ctx when
1757 issuing and attempting to decrypt tickets in case it has changed during
1758 servername handling. Use a non-zero length session ID when attempting
1759 stateless session resumption: this makes it possible to determine if
1760 a resumption has occurred immediately after receiving server hello
1761 (several places in OpenSSL subtly assume this) instead of later in
1765 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1766 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1767 fixes for a few places where the return code is not checked
1769 [Julia Lawall <julia@diku.dk>]
1771 *) Add --strict-warnings option to Configure script to include devteam
1772 warnings in other configurations.
1775 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1776 makes it possible to install openssl libraries in locations which
1777 have names other than "lib", for example "/usr/lib64" which some
1779 [Steve Henson, based on patch from Jeremy Utley]
1781 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1782 X690 8.9.12 and can produce some misleading textual output of OIDs.
1783 [Steve Henson, reported by Dan Kaminsky]
1785 *) Delete MD2 from algorithm tables. This follows the recommendation in
1786 several standards that it is not used in new applications due to
1787 several cryptographic weaknesses. For binary compatibility reasons
1788 the MD2 API is still compiled in by default.
1791 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1795 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1796 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1798 [Guenter <lists@gknw.net>]
1800 *) Fix the server certificate chain building code to use X509_verify_cert(),
1801 it used to have an ad-hoc builder which was unable to cope with anything
1802 other than a simple chain.
1803 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1805 *) Don't check self signed certificate signatures in X509_verify_cert()
1806 by default (a flag can override this): it just wastes time without
1807 adding any security. As a useful side effect self signed root CAs
1808 with non-FIPS digests are now usable in FIPS mode.
1811 *) In dtls1_process_out_of_seq_message() the check if the current message
1812 is already buffered was missing. For every new message was memory
1813 allocated, allowing an attacker to perform an denial of service attack
1814 with sending out of seq handshake messages until there is no memory
1815 left. Additionally every future messege was buffered, even if the
1816 sequence number made no sense and would be part of another handshake.
1817 So only messages with sequence numbers less than 10 in advance will be
1818 buffered. (CVE-2009-1378)
1819 [Robin Seggelmann, discovered by Daniel Mentz]
1821 *) Records are buffered if they arrive with a future epoch to be
1822 processed after finishing the corresponding handshake. There is
1823 currently no limitation to this buffer allowing an attacker to perform
1824 a DOS attack with sending records with future epochs until there is no
1825 memory left. This patch adds the pqueue_size() function to detemine
1826 the size of a buffer and limits the record buffer to 100 entries.
1828 [Robin Seggelmann, discovered by Daniel Mentz]
1830 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1831 parent structure is freed. (CVE-2009-1379)
1834 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1835 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1838 [Ilya O. <vrghost@gmail.com>]
1840 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1842 *) Disable renegotiation completely - this fixes a severe security
1843 problem (CVE-2009-3555) at the cost of breaking all
1844 renegotiation. Renegotiation can be re-enabled by setting
1845 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1846 run-time. This is really not recommended unless you know what
1850 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1852 *) Don't set val to NULL when freeing up structures, it is freed up by
1853 underlying code. If sizeof(void *) > sizeof(long) this can result in
1854 zeroing past the valid field. (CVE-2009-0789)
1855 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1857 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1858 checked correctly. This would allow some invalid signed attributes to
1859 appear to verify correctly. (CVE-2009-0591)
1860 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1862 *) Reject UniversalString and BMPString types with invalid lengths. This
1863 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1864 a legal length. (CVE-2009-0590)
1867 *) Set S/MIME signing as the default purpose rather than setting it
1868 unconditionally. This allows applications to override it at the store
1872 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1873 to handle some structures.
1876 *) Improve efficiency of mem_gets: don't search whole buffer each time
1878 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1880 *) New -hex option for openssl rand.
1883 *) Print out UTF8String and NumericString when parsing ASN1.
1886 *) Support NumericString type for name components.
1889 *) Allow CC in the environment to override the automatically chosen
1890 compiler. Note that nothing is done to ensure flags work with the
1894 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1896 *) Properly check EVP_VerifyFinal() and similar return values
1898 [Ben Laurie, Bodo Moeller, Google Security Team]
1900 *) Enable TLS extensions by default.
1903 *) Allow the CHIL engine to be loaded, whether the application is
1904 multithreaded or not. (This does not release the developer from the
1905 obligation to set up the dynamic locking callbacks.)
1906 [Sander Temme <sander@temme.net>]
1908 *) Use correct exit code if there is an error in dgst command.
1909 [Steve Henson; problem pointed out by Roland Dirlewanger]
1911 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1912 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1915 *) Add experimental JPAKE support, including demo authentication in
1916 s_client and s_server.
1919 *) Set the comparison function in v3_addr_canonize().
1920 [Rob Austein <sra@hactrn.net>]
1922 *) Add support for XMPP STARTTLS in s_client.
1923 [Philip Paeps <philip@freebsd.org>]
1925 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1926 to ensure that even with this option, only ciphersuites in the
1927 server's preference list will be accepted. (Note that the option
1928 applies only when resuming a session, so the earlier behavior was
1929 just about the algorithm choice for symmetric cryptography.)
1932 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1934 *) Fix NULL pointer dereference if a DTLS server received
1935 ChangeCipherSpec as first record (CVE-2009-1386).
1938 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1939 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1942 *) The fix in 0.9.8c that supposedly got rid of unsafe
1943 double-checked locking was incomplete for RSA blinding,
1944 addressing just one layer of what turns out to have been
1945 doubly unsafe triple-checked locking.
1947 So now fix this for real by retiring the MONT_HELPER macro
1948 in crypto/rsa/rsa_eay.c.
1950 [Bodo Moeller; problem pointed out by Marius Schilder]
1952 *) Various precautionary measures:
1954 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1956 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1957 (NB: This would require knowledge of the secret session ticket key
1958 to exploit, in which case you'd be SOL either way.)
1960 - Change bn_nist.c so that it will properly handle input BIGNUMs
1961 outside the expected range.
1963 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1966 [Neel Mehta, Bodo Moeller]
1968 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1969 the load fails. Useful for distros.
1970 [Ben Laurie and the FreeBSD team]
1972 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1975 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1978 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1980 This work was sponsored by Logica.
1983 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1984 keystores. Support for SSL/TLS client authentication too.
1985 Not compiled unless enable-capieng specified to Configure.
1987 This work was sponsored by Logica.
1990 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1991 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1992 attribute creation routines such as certifcate requests and PKCS#12
1996 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1998 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1999 handshake which could lead to a cilent crash as found using the
2000 Codenomicon TLS test suite (CVE-2008-1672)
2001 [Steve Henson, Mark Cox]
2003 *) Fix double free in TLS server name extensions which could lead to
2004 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2007 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2009 Clear the error queue to ensure that error entries left from
2010 older function calls do not interfere with the correct operation.
2011 [Lutz Jaenicke, Erik de Castro Lopo]
2013 *) Remove root CA certificates of commercial CAs:
2015 The OpenSSL project does not recommend any specific CA and does not
2016 have any policy with respect to including or excluding any CA.
2017 Therefore it does not make any sense to ship an arbitrary selection
2018 of root CA certificates with the OpenSSL software.
2021 *) RSA OAEP patches to fix two separate invalid memory reads.
2022 The first one involves inputs when 'lzero' is greater than
2023 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2024 before the beginning of from). The second one involves inputs where
2025 the 'db' section contains nothing but zeroes (there is a one-byte
2026 invalid read after the end of 'db').
2027 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2029 *) Partial backport from 0.9.9-dev:
2031 Introduce bn_mul_mont (dedicated Montgomery multiplication
2032 procedure) as a candidate for BIGNUM assembler implementation.
2033 While 0.9.9-dev uses assembler for various architectures, only
2034 x86_64 is available by default here in the 0.9.8 branch, and
2035 32-bit x86 is available through a compile-time setting.
2037 To try the 32-bit x86 assembler implementation, use Configure
2038 option "enable-montasm" (which exists only for this backport).
2040 As "enable-montasm" for 32-bit x86 disclaims code stability
2041 anyway, in this constellation we activate additional code
2042 backported from 0.9.9-dev for further performance improvements,
2043 namely BN_from_montgomery_word. (To enable this otherwise,
2044 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2046 [Andy Polyakov (backport partially by Bodo Moeller)]
2048 *) Add TLS session ticket callback. This allows an application to set
2049 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2050 values. This is useful for key rollover for example where several key
2051 sets may exist with different names.
2054 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2055 This was broken until now in 0.9.8 releases, such that the only way
2056 a registered ENGINE could be used (assuming it initialises
2057 successfully on the host) was to explicitly set it as the default
2058 for the relevant algorithms. This is in contradiction with 0.9.7
2059 behaviour and the documentation. With this fix, when an ENGINE is
2060 registered into a given algorithm's table of implementations, the
2061 'uptodate' flag is reset so that auto-discovery will be used next
2062 time a new context for that algorithm attempts to select an
2064 [Ian Lister (tweaked by Geoff Thorpe)]
2066 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2067 implemention in the following ways:
2069 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2072 Lack of BER streaming support means one pass streaming processing is
2073 only supported if data is detached: setting the streaming flag is
2074 ignored for embedded content.
2076 CMS support is disabled by default and must be explicitly enabled
2077 with the enable-cms configuration option.
2080 *) Update the GMP engine glue to do direct copies between BIGNUM and
2081 mpz_t when openssl and GMP use the same limb size. Otherwise the
2082 existing "conversion via a text string export" trick is still used.
2083 [Paul Sheer <paulsheer@gmail.com>]
2085 *) Zlib compression BIO. This is a filter BIO which compressed and
2086 uncompresses any data passed through it.
2089 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2090 RFC3394 compatible AES key wrapping.
2093 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2094 sets string data without copying. X509_ALGOR_set0() and
2095 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2096 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2097 from an X509_ATTRIBUTE structure optionally checking it occurs only
2098 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2102 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2103 to get the expected BN_FLG_CONSTTIME behavior.
2104 [Bodo Moeller (Google)]
2108 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2109 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2110 - added some more tests to do_tests.pl
2111 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2112 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2113 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2114 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2115 - various changes to netware.pl to enable gcc-cross builds on Win32
2117 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2118 - various changes to fix missing prototype warnings
2119 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2120 - added AES, WHIRLPOOL and CPUID assembler code to build files
2121 - added missing AES assembler make rules to mk1mf.pl
2122 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2123 [Guenter Knauf <eflash@gmx.net>]
2125 *) Implement certificate status request TLS extension defined in RFC3546.
2126 A client can set the appropriate parameters and receive the encoded
2127 OCSP response via a callback. A server can query the supplied parameters
2128 and set the encoded OCSP response in the callback. Add simplified examples
2129 to s_client and s_server.
2132 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2134 *) Fix various bugs:
2135 + Binary incompatibility of ssl_ctx_st structure
2136 + DTLS interoperation with non-compliant servers
2137 + Don't call get_session_cb() without proposed session
2138 + Fix ia64 assembler code
2139 [Andy Polyakov, Steve Henson]
2141 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2143 *) DTLS Handshake overhaul. There were longstanding issues with
2144 OpenSSL DTLS implementation, which were making it impossible for
2145 RFC 4347 compliant client to communicate with OpenSSL server.
2146 Unfortunately just fixing these incompatibilities would "cut off"
2147 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2148 server keeps tolerating non RFC compliant syntax. The opposite is
2149 not true, 0.9.8f client can not communicate with earlier server.
2150 This update even addresses CVE-2007-4995.
2153 *) Changes to avoid need for function casts in OpenSSL: some compilers
2154 (gcc 4.2 and later) reject their use.
2155 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2158 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2159 RFC4507bis. The encrypted ticket format is an encrypted encoded
2160 SSL_SESSION structure, that way new session features are automatically
2163 If a client application caches session in an SSL_SESSION structure
2164 support is transparent because tickets are now stored in the encoded
2167 The SSL_CTX structure automatically generates keys for ticket
2168 protection in servers so again support should be possible
2169 with no application modification.
2171 If a client or server wishes to disable RFC4507 support then the option
2172 SSL_OP_NO_TICKET can be set.
2174 Add a TLS extension debugging callback to allow the contents of any client
2175 or server extensions to be examined.
2177 This work was sponsored by Google.
2180 *) Add initial support for TLS extensions, specifically for the server_name
2181 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2182 have new members for a host name. The SSL data structure has an
2183 additional member SSL_CTX *initial_ctx so that new sessions can be
2184 stored in that context to allow for session resumption, even after the
2185 SSL has been switched to a new SSL_CTX in reaction to a client's
2186 server_name extension.
2188 New functions (subject to change):
2190 SSL_get_servername()
2191 SSL_get_servername_type()
2194 New CTRL codes and macros (subject to change):
2196 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2197 - SSL_CTX_set_tlsext_servername_callback()
2198 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2199 - SSL_CTX_set_tlsext_servername_arg()
2200 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2202 openssl s_client has a new '-servername ...' option.
2204 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2205 '-key2 ...', '-servername_fatal' (subject to change). This allows
2206 testing the HostName extension for a specific single host name ('-cert'
2207 and '-key' remain fallbacks for handshakes without HostName
2208 negotiation). If the unrecogninzed_name alert has to be sent, this by
2209 default is a warning; it becomes fatal with the '-servername_fatal'
2212 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2214 *) Add AES and SSE2 assembly language support to VC++ build.
2217 *) Mitigate attack on final subtraction in Montgomery reduction.
2220 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2221 (which previously caused an internal error).
2224 *) Squeeze another 10% out of IGE mode when in != out.
2227 *) AES IGE mode speedup.
2228 [Dean Gaudet (Google)]
2230 *) Add the Korean symmetric 128-bit cipher SEED (see
2231 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2232 add SEED ciphersuites from RFC 4162:
2234 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2235 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2236 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2237 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2239 To minimize changes between patchlevels in the OpenSSL 0.9.8
2240 series, SEED remains excluded from compilation unless OpenSSL
2241 is configured with 'enable-seed'.
2242 [KISA, Bodo Moeller]
2244 *) Mitigate branch prediction attacks, which can be practical if a
2245 single processor is shared, allowing a spy process to extract
2246 information. For detailed background information, see
2247 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2248 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2249 and Necessary Software Countermeasures"). The core of the change
2250 are new versions BN_div_no_branch() and
2251 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2252 respectively, which are slower, but avoid the security-relevant
2253 conditional branches. These are automatically called by BN_div()
2254 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2255 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2256 remove a conditional branch.
2258 BN_FLG_CONSTTIME is the new name for the previous
2259 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2260 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2261 in the exponent causes BN_mod_exp_mont() to use the alternative
2262 implementation in BN_mod_exp_mont_consttime().) The old name
2263 remains as a deprecated alias.
2265 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2266 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2267 constant-time implementations for more than just exponentiation.
2268 Here too the old name is kept as a deprecated alias.
2270 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2271 the BN_BLINDING structure gets an independent copy of the
2272 modulus. This means that the previous "BIGNUM *m" argument to
2273 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2274 essentially becomes "const BIGNUM *m", although we can't actually
2275 change this in the header file before 0.9.9. It allows
2276 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2277 enable BN_FLG_CONSTTIME.
2279 [Matthew D Wood (Intel Corp)]
2281 *) In the SSL/TLS server implementation, be strict about session ID
2282 context matching (which matters if an application uses a single
2283 external cache for different purposes). Previously,
2284 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2285 set. This did ensure strict client verification, but meant that,
2286 with applications using a single external cache for quite
2287 different requirements, clients could circumvent ciphersuite
2288 restrictions for a given session ID context by starting a session
2289 in a different context.
2292 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2293 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2294 authentication-only ciphersuites.
2297 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2298 not complete and could lead to a possible single byte overflow
2299 (CVE-2007-5135) [Ben Laurie]
2301 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2303 *) Since AES128 and AES256 (and similarly Camellia128 and
2304 Camellia256) share a single mask bit in the logic of
2305 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2306 kludge to work properly if AES128 is available and AES256 isn't
2307 (or if Camellia128 is available and Camellia256 isn't).
2310 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2311 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2312 When a point or a seed is encoded in a BIT STRING, we need to
2313 prevent the removal of trailing zero bits to get the proper DER
2314 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2315 of a NamedBitList, for which trailing 0 bits need to be removed.)
2318 *) Have SSL/TLS server implementation tolerate "mismatched" record
2319 protocol version while receiving ClientHello even if the
2320 ClientHello is fragmented. (The server can't insist on the
2321 particular protocol version it has chosen before the ServerHello
2322 message has informed the client about his choice.)
2325 *) Add RFC 3779 support.
2326 [Rob Austein for ARIN, Ben Laurie]
2328 *) Load error codes if they are not already present instead of using a
2329 static variable. This allows them to be cleanly unloaded and reloaded.
2330 Improve header file function name parsing.
2333 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2334 or CAPABILITY handshake as required by RFCs.
2337 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2339 *) Introduce limits to prevent malicious keys being able to
2340 cause a denial of service. (CVE-2006-2940)
2341 [Steve Henson, Bodo Moeller]
2343 *) Fix ASN.1 parsing of certain invalid structures that can result
2344 in a denial of service. (CVE-2006-2937) [Steve Henson]
2346 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2347 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2349 *) Fix SSL client code which could crash if connecting to a
2350 malicious SSLv2 server. (CVE-2006-4343)
2351 [Tavis Ormandy and Will Drewry, Google Security Team]
2353 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2354 match only those. Before that, "AES256-SHA" would be interpreted
2355 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2356 the same strength classification in 0.9.7h) as we currently only
2357 have a single AES bit in the ciphersuite description bitmap.
2358 That change, however, also applied to ciphersuite strings such as
2359 "RC4-MD5" that intentionally matched multiple ciphersuites --
2360 namely, SSL 2.0 ciphersuites in addition to the more common ones
2361 from SSL 3.0/TLS 1.0.
2363 So we change the selection algorithm again: Naming an explicit
2364 ciphersuite selects this one ciphersuite, and any other similar
2365 ciphersuite (same bitmap) from *other* protocol versions.
2366 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2367 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2369 Since SSL 2.0 does not have any ciphersuites for which the
2370 128/256 bit distinction would be relevant, this works for now.
2371 The proper fix will be to use different bits for AES128 and
2372 AES256, which would have avoided the problems from the beginning;
2373 however, bits are scarce, so we can only do this in a new release
2374 (not just a patchlevel) when we can change the SSL_CIPHER
2375 definition to split the single 'unsigned long mask' bitmap into
2376 multiple values to extend the available space.
2380 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2382 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2383 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2385 *) Add AES IGE and biIGE modes.
2388 *) Change the Unix randomness entropy gathering to use poll() when
2389 possible instead of select(), since the latter has some
2390 undesirable limitations.
2391 [Darryl Miles via Richard Levitte and Bodo Moeller]
2393 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2394 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2395 cannot be implicitly activated as part of, e.g., the "AES" alias.
2396 However, please upgrade to OpenSSL 0.9.9[-dev] for
2397 non-experimental use of the ECC ciphersuites to get TLS extension
2398 support, which is required for curve and point format negotiation
2399 to avoid potential handshake problems.
2402 *) Disable rogue ciphersuites:
2404 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2405 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2406 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2408 The latter two were purportedly from
2409 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2412 Also deactivate the remaining ciphersuites from
2413 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2414 unofficial, and the ID has long expired.
2417 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2418 dual-core machines) and other potential thread-safety issues.
2421 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2422 versions), which is now available for royalty-free use
2423 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2424 Also, add Camellia TLS ciphersuites from RFC 4132.
2426 To minimize changes between patchlevels in the OpenSSL 0.9.8
2427 series, Camellia remains excluded from compilation unless OpenSSL
2428 is configured with 'enable-camellia'.
2431 *) Disable the padding bug check when compression is in use. The padding
2432 bug check assumes the first packet is of even length, this is not
2433 necessarily true if compresssion is enabled and can result in false
2434 positives causing handshake failure. The actual bug test is ancient
2435 code so it is hoped that implementations will either have fixed it by
2436 now or any which still have the bug do not support compression.
2439 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2441 *) When applying a cipher rule check to see if string match is an explicit
2442 cipher suite and only match that one cipher suite if it is.
2445 *) Link in manifests for VC++ if needed.
2446 [Austin Ziegler <halostatue@gmail.com>]
2448 *) Update support for ECC-based TLS ciphersuites according to
2449 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2450 TLS extensions, which are supported starting with the 0.9.9
2451 branch, not in the OpenSSL 0.9.8 branch).
2454 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2455 opaque EVP_CIPHER_CTX handling.
2458 *) Fixes and enhancements to zlib compression code. We now only use
2459 "zlib1.dll" and use the default __cdecl calling convention on Win32
2460 to conform with the standards mentioned here:
2461 http://www.zlib.net/DLL_FAQ.txt
2462 Static zlib linking now works on Windows and the new --with-zlib-include
2463 --with-zlib-lib options to Configure can be used to supply the location
2464 of the headers and library. Gracefully handle case where zlib library
2468 *) Several fixes and enhancements to the OID generation code. The old code
2469 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2470 handle numbers larger than ULONG_MAX, truncated printing and had a
2471 non standard OBJ_obj2txt() behaviour.
2474 *) Add support for building of engines under engine/ as shared libraries
2475 under VC++ build system.
2478 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2479 Hopefully, we will not see any false combination of paths any more.
2482 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2484 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2485 (part of SSL_OP_ALL). This option used to disable the
2486 countermeasure against man-in-the-middle protocol-version
2487 rollback in the SSL 2.0 server implementation, which is a bad
2488 idea. (CVE-2005-2969)
2490 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2491 for Information Security, National Institute of Advanced Industrial
2492 Science and Technology [AIST], Japan)]
2494 *) Add two function to clear and return the verify parameter flags.
2497 *) Keep cipherlists sorted in the source instead of sorting them at
2498 runtime, thus removing the need for a lock.
2501 *) Avoid some small subgroup attacks in Diffie-Hellman.
2502 [Nick Mathewson and Ben Laurie]
2504 *) Add functions for well-known primes.
2507 *) Extended Windows CE support.
2508 [Satoshi Nakamura and Andy Polyakov]
2510 *) Initialize SSL_METHOD structures at compile time instead of during
2511 runtime, thus removing the need for a lock.
2514 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2515 attempting to decrypt each encrypted key in turn. Add support to
2519 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2521 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2524 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2527 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2528 key into the same file any more.
2531 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2534 *) Add -utf8 command line and config file option to 'ca'.
2535 [Stefan <stf@udoma.org]
2537 *) Removed the macro des_crypt(), as it seems to conflict with some
2538 libraries. Use DES_crypt().
2541 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2542 involves renaming the source and generated shared-libs for
2543 both. The engines will accept the corrected or legacy ids
2544 ('ncipher' and '4758_cca' respectively) when binding. NB,
2545 this only applies when building 'shared'.
2546 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2548 *) Add attribute functions to EVP_PKEY structure. Modify
2549 PKCS12_create() to recognize a CSP name attribute and
2550 use it. Make -CSP option work again in pkcs12 utility.
2553 *) Add new functionality to the bn blinding code:
2554 - automatic re-creation of the BN_BLINDING parameters after
2555 a fixed number of uses (currently 32)
2556 - add new function for parameter creation
2557 - introduce flags to control the update behaviour of the
2558 BN_BLINDING parameters
2559 - hide BN_BLINDING structure
2560 Add a second BN_BLINDING slot to the RSA structure to improve
2561 performance when a single RSA object is shared among several
2565 *) Add support for DTLS.
2566 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2568 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2569 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2572 *) Remove buggy and incompletet DH cert support from
2573 ssl/ssl_rsa.c and ssl/s3_both.c
2576 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2577 the apps/openssl applications.
2580 *) Compile clean with "-Wall -Wmissing-prototypes
2581 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2582 DEBUG_SAFESTACK must also be set.
2585 *) Change ./Configure so that certain algorithms can be disabled by default.
2586 The new counterpiece to "no-xxx" is "enable-xxx".
2588 The patented RC5 and MDC2 algorithms will now be disabled unless
2589 "enable-rc5" and "enable-mdc2", respectively, are specified.
2591 (IDEA remains enabled despite being patented. This is because IDEA
2592 is frequently required for interoperability, and there is no license
2593 fee for non-commercial use. As before, "no-idea" can be used to
2594 avoid this algorithm.)
2598 *) Add processing of proxy certificates (see RFC 3820). This work was
2599 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2600 EGEE (Enabling Grids for E-science in Europe).
2603 *) RC4 performance overhaul on modern architectures/implementations, such
2604 as Intel P4, IA-64 and AMD64.
2607 *) New utility extract-section.pl. This can be used specify an alternative
2608 section number in a pod file instead of having to treat each file as
2609 a separate case in Makefile. This can be done by adding two lines to the
2612 =for comment openssl_section:XXX
2614 The blank line is mandatory.
2618 *) New arguments -certform, -keyform and -pass for s_client and s_server
2619 to allow alternative format key and certificate files and passphrase
2623 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2624 update associated structures and add various utility functions.
2626 Add new policy related verify parameters, include policy checking in
2627 standard verify code. Enhance 'smime' application with extra parameters
2628 to support policy checking and print out.
2631 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2632 Nehemiah processors. These extensions support AES encryption in hardware
2633 as well as RNG (though RNG support is currently disabled).
2634 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2636 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2639 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2640 [Andy Polyakov and a number of other people]
2642 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2643 implementation contributed by IBM.
2644 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2646 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2647 exponent rather than 'unsigned long'. There is a corresponding change to
2648 the new 'rsa_keygen' element of the RSA_METHOD structure.
2649 [Jelte Jansen, Geoff Thorpe]
2651 *) Functionality for creating the initial serial number file is now
2652 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2654 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2655 number file to 1, which is bound to cause problems. To avoid
2656 the problems while respecting compatibility between different 0.9.7
2657 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2658 CA.pl for serial number initialization. With the new release 0.9.8,
2659 we can fix the problem directly in the 'ca' utility.)
2662 *) Reduced header interdepencies by declaring more opaque objects in
2663 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2664 give fewer recursive includes, which could break lazy source code - so
2665 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2666 developers should define this symbol when building and using openssl to
2667 ensure they track the recommended behaviour, interfaces, [etc], but
2668 backwards-compatible behaviour prevails when this isn't defined.
2671 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2674 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2675 This will generate a random key of the appropriate length based on the
2676 cipher context. The EVP_CIPHER can provide its own random key generation
2677 routine to support keys of a specific form. This is used in the des and
2678 3des routines to generate a key of the correct parity. Update S/MIME
2679 code to use new functions and hence generate correct parity DES keys.
2680 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2681 valid (weak or incorrect parity).
2684 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2685 as looking them up. This is useful when the verified structure may contain
2686 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2687 present unless the new PKCS7_NO_CRL flag is asserted.
2690 *) Extend ASN1 oid configuration module. It now additionally accepts the
2693 shortName = some long name, 1.2.3.4
2696 *) Reimplemented the BN_CTX implementation. There is now no more static
2697 limitation on the number of variables it can handle nor the depth of the
2698 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2699 information can now expand as required, and rather than having a single
2700 static array of bignums, BN_CTX now uses a linked-list of such arrays
2701 allowing it to expand on demand whilst maintaining the usefulness of
2702 BN_CTX's "bundling".
2705 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2706 to allow all RSA operations to function using a single BN_CTX.
2709 *) Preliminary support for certificate policy evaluation and checking. This
2710 is initially intended to pass the tests outlined in "Conformance Testing
2711 of Relying Party Client Certificate Path Processing Logic" v1.07.
2714 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2715 remained unused and not that useful. A variety of other little bignum
2716 tweaks and fixes have also been made continuing on from the audit (see
2720 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2721 associated ASN1, EVP and SSL functions and old ASN1 macros.
2724 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2725 and this should never fail. So the return value from the use of
2726 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2727 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2730 *) BN_CTX_get() should return zero-valued bignums, providing the same
2731 initialised value as BN_new().
2732 [Geoff Thorpe, suggested by Ulf Möller]
2734 *) Support for inhibitAnyPolicy certificate extension.
2737 *) An audit of the BIGNUM code is underway, for which debugging code is
2738 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2739 is considered valid when processing BIGNUMs, and causes execution to
2740 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2741 further steps are taken to deliberately pollute unused data in BIGNUM
2742 structures to try and expose faulty code further on. For now, openssl will
2743 (in its default mode of operation) continue to tolerate the inconsistent
2744 forms that it has tolerated in the past, but authors and packagers should
2745 consider trying openssl and their own applications when compiled with
2746 these debugging symbols defined. It will help highlight potential bugs in
2747 their own code, and will improve the test coverage for OpenSSL itself. At
2748 some point, these tighter rules will become openssl's default to improve
2749 maintainability, though the assert()s and other overheads will remain only
2750 in debugging configurations. See bn.h for more details.
2751 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2753 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2754 that can only be obtained through BN_CTX_new() (which implicitly
2755 initialises it). The presence of this function only made it possible
2756 to overwrite an existing structure (and cause memory leaks).
2759 *) Because of the callback-based approach for implementing LHASH as a
2760 template type, lh_insert() adds opaque objects to hash-tables and
2761 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2762 to clean up those corresponding objects before destroying the hash table
2763 (and losing the object pointers). So some over-zealous constifications in
2764 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2765 objects as "const" and the lh_doall[_arg] callback wrappers are not
2766 prototyped to have "const" restrictions on the object pointers they are
2767 given (and so aren't required to cast them away any more).
2770 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2771 (speed) prefers to use its own implementation. The two implementations
2772 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2773 its object type properly exposed (MS_TM) instead of casting to/from "char
2774 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2775 aren't necessarily the greatest nomenclatures - but this is what was used
2776 internally to the implementation so I've used that for now.
2779 *) Ensure that deprecated functions do not get compiled when
2780 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2781 the self-tests were still using deprecated key-generation functions so
2782 these have been updated also.
2785 *) Reorganise PKCS#7 code to separate the digest location functionality
2786 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2787 New function PKCS7_set_digest() to set the digest type for PKCS#7
2788 digestedData type. Add additional code to correctly generate the
2789 digestedData type and add support for this type in PKCS7 initialization
2793 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2794 structure of type "other".
2797 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2798 sure the loop does correctly stop and breaking ("division by zero")
2799 modulus operations are not performed. The (pre-generated) prime
2800 table crypto/bn/bn_prime.h was already correct, but it could not be
2801 re-generated on some platforms because of the "division by zero"
2802 situation in the script.
2803 [Ralf S. Engelschall]
2805 *) Update support for ECC-based TLS ciphersuites according to
2806 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2807 SHA-1 now is only used for "small" curves (where the
2808 representation of a field element takes up to 24 bytes); for
2809 larger curves, the field element resulting from ECDH is directly
2810 used as premaster secret.
2811 [Douglas Stebila (Sun Microsystems Laboratories)]
2813 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2814 curve secp160r1 to the tests.
2815 [Douglas Stebila (Sun Microsystems Laboratories)]
2817 *) Add the possibility to load symbols globally with DSO.
2818 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2820 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2821 control of the error stack.
2824 *) Add support for STORE in ENGINE.
2827 *) Add the STORE type. The intention is to provide a common interface
2828 to certificate and key stores, be they simple file-based stores, or
2829 HSM-type store, or LDAP stores, or...
2830 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2833 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2834 pass a list of arguments to any function as well as provide a way
2835 for a function to pass data back to the caller.
2838 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2839 works like BUF_strdup() but can be used to duplicate a portion of
2840 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2844 *) Add the function sk_find_ex() which works like sk_find(), but will
2845 return an index to an element even if an exact match couldn't be
2846 found. The index is guaranteed to point at the element where the
2847 searched-for key would be inserted to preserve sorting order.
2850 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2851 takes an extra flags argument for optional functionality. Currently,
2852 the following flags are defined:
2854 OBJ_BSEARCH_VALUE_ON_NOMATCH
2855 This one gets OBJ_bsearch_ex() to return a pointer to the first
2856 element where the comparing function returns a negative or zero
2859 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2860 This one gets OBJ_bsearch_ex() to return a pointer to the first
2861 element where the comparing function returns zero. This is useful
2862 if there are more than one element where the comparing function
2866 *) Make it possible to create self-signed certificates with 'openssl ca'
2867 in such a way that the self-signed certificate becomes part of the
2868 CA database and uses the same mechanisms for serial number generation
2869 as all other certificate signing. The new flag '-selfsign' enables
2870 this functionality. Adapt CA.sh and CA.pl.in.
2873 *) Add functionality to check the public key of a certificate request
2874 against a given private. This is useful to check that a certificate
2875 request can be signed by that key (self-signing).
2878 *) Make it possible to have multiple active certificates with the same
2879 subject in the CA index file. This is done only if the keyword
2880 'unique_subject' is set to 'no' in the main CA section (default
2881 if 'CA_default') of the configuration file. The value is saved
2882 with the database itself in a separate index attribute file,
2883 named like the index file with '.attr' appended to the name.
2886 *) Generate muti valued AVAs using '+' notation in config files for
2890 *) Support for nameConstraints certificate extension.
2893 *) Support for policyConstraints certificate extension.
2896 *) Support for policyMappings certificate extension.
2899 *) Make sure the default DSA_METHOD implementation only uses its
2900 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2901 and change its own handlers to be NULL so as to remove unnecessary
2902 indirection. This lets alternative implementations fallback to the
2903 default implementation more easily.
2906 *) Support for directoryName in GeneralName related extensions
2910 *) Make it possible to link applications using Makefile.shared.
2911 Make that possible even when linking against static libraries!
2914 *) Support for single pass processing for S/MIME signing. This now
2915 means that S/MIME signing can be done from a pipe, in addition
2916 cleartext signing (multipart/signed type) is effectively streaming
2917 and the signed data does not need to be all held in memory.
2919 This is done with a new flag PKCS7_STREAM. When this flag is set
2920 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2921 is done after the data is output (and digests calculated) in
2922 SMIME_write_PKCS7().
2925 *) Add full support for -rpath/-R, both in shared libraries and
2926 applications, at least on the platforms where it's known how
2930 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2931 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2932 will now compute a table of multiples of the generator that
2933 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2934 faster (notably in the case of a single point multiplication,
2935 scalar * generator).
2936 [Nils Larsch, Bodo Moeller]
2938 *) IPv6 support for certificate extensions. The various extensions
2939 which use the IP:a.b.c.d can now take IPv6 addresses using the
2940 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2944 *) Added an ENGINE that implements RSA by performing private key
2945 exponentiations with the GMP library. The conversions to and from
2946 GMP's mpz_t format aren't optimised nor are any montgomery forms
2947 cached, and on x86 it appears OpenSSL's own performance has caught up.
2948 However there are likely to be other architectures where GMP could
2949 provide a boost. This ENGINE is not built in by default, but it can be
2950 specified at Configure time and should be accompanied by the necessary
2951 linker additions, eg;
2952 ./config -DOPENSSL_USE_GMP -lgmp
2955 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2956 testing availability of engines with "-t" - the old behaviour is
2957 produced by increasing the feature's verbosity with "-tt".
2960 *) ECDSA routines: under certain error conditions uninitialized BN objects
2961 could be freed. Solution: make sure initialization is performed early
2962 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2966 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2967 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2968 software implementations. For DSA and DH, parameter generation can
2969 also be overriden by providing the appropriate method callbacks.
2972 *) Change the "progress" mechanism used in key-generation and
2973 primality testing to functions that take a new BN_GENCB pointer in
2974 place of callback/argument pairs. The new API functions have "_ex"
2975 postfixes and the older functions are reimplemented as wrappers for
2976 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2977 declarations of the old functions to help (graceful) attempts to
2978 migrate to the new functions. Also, the new key-generation API
2979 functions operate on a caller-supplied key-structure and return
2980 success/failure rather than returning a key or NULL - this is to
2981 help make "keygen" another member function of RSA_METHOD etc.
2983 Example for using the new callback interface:
2985 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2989 BN_GENCB_set(&my_cb, my_callback, my_arg);
2991 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2992 /* For the meaning of a, b in calls to my_callback(), see the
2993 * documentation of the function that calls the callback.
2994 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2995 * my_callback should return 1 if it wants BN_is_prime_ex()
2996 * to continue, or 0 to stop.
3001 *) Change the ZLIB compression method to be stateful, and make it
3002 available to TLS with the number defined in
3003 draft-ietf-tls-compression-04.txt.
3006 *) Add the ASN.1 structures and functions for CertificatePair, which
3007 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3009 CertificatePair ::= SEQUENCE {
3010 forward [0] Certificate OPTIONAL,
3011 reverse [1] Certificate OPTIONAL,
3012 -- at least one of the pair shall be present -- }
3014 Also implement the PEM functions to read and write certificate
3015 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3017 This needed to be defined, mostly for the sake of the LDAP
3018 attribute crossCertificatePair, but may prove useful elsewhere as
3022 *) Make it possible to inhibit symlinking of shared libraries in
3023 Makefile.shared, for Cygwin's sake.
3026 *) Extend the BIGNUM API by creating a function
3027 void BN_set_negative(BIGNUM *a, int neg);
3028 and a macro that behave like
3029 int BN_is_negative(const BIGNUM *a);
3031 to avoid the need to access 'a->neg' directly in applications.
3034 *) Implement fast modular reduction for pseudo-Mersenne primes
3035 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3036 EC_GROUP_new_curve_GFp() will now automatically use this
3038 [Nils Larsch <nla@trustcenter.de>]
3040 *) Add new lock type (CRYPTO_LOCK_BN).
3043 *) Change the ENGINE framework to automatically load engines
3044 dynamically from specific directories unless they could be
3045 found to already be built in or loaded. Move all the
3046 current engines except for the cryptodev one to a new
3048 The engines in engines/ are built as shared libraries if
3049 the "shared" options was given to ./Configure or ./config.
3050 Otherwise, they are inserted in libcrypto.a.
3051 /usr/local/ssl/engines is the default directory for dynamic
3052 engines, but that can be overriden at configure time through
3053 the usual use of --prefix and/or --openssldir, and at run
3054 time with the environment variable OPENSSL_ENGINES.
3055 [Geoff Thorpe and Richard Levitte]
3057 *) Add Makefile.shared, a helper makefile to build shared
3058 libraries. Addapt Makefile.org.
3061 *) Add version info to Win32 DLLs.
3062 [Peter 'Luna' Runestig" <peter@runestig.com>]
3064 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3065 can be added using this API to created arbitrary PKCS#12
3066 files while avoiding the low level API.
3068 New options to PKCS12_create(), key or cert can be NULL and
3069 will then be omitted from the output file. The encryption
3070 algorithm NIDs can be set to -1 for no encryption, the mac
3071 iteration count can be set to 0 to omit the mac.
3073 Enhance pkcs12 utility by making the -nokeys and -nocerts
3074 options work when creating a PKCS#12 file. New option -nomac
3075 to omit the mac, NONE can be set for an encryption algorithm.
3076 New code is modified to use the enhanced PKCS12_create()
3077 instead of the low level API.
3080 *) Extend ASN1 encoder to support indefinite length constructed
3081 encoding. This can output sequences tags and octet strings in
3082 this form. Modify pk7_asn1.c to support indefinite length
3083 encoding. This is experimental and needs additional code to
3084 be useful, such as an ASN1 bio and some enhanced streaming
3087 Extend template encode functionality so that tagging is passed
3088 down to the template encoder.
3091 *) Let 'openssl req' fail if an argument to '-newkey' is not
3092 recognized instead of using RSA as a default.
3095 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3096 As these are not official, they are not included in "ALL";
3097 the "ECCdraft" ciphersuite group alias can be used to select them.
3098 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3100 *) Add ECDH engine support.
3101 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3103 *) Add ECDH in new directory crypto/ecdh/.
3104 [Douglas Stebila (Sun Microsystems Laboratories)]
3106 *) Let BN_rand_range() abort with an error after 100 iterations
3107 without success (which indicates a broken PRNG).
3110 *) Change BN_mod_sqrt() so that it verifies that the input value
3111 is really the square of the return value. (Previously,
3112 BN_mod_sqrt would show GIGO behaviour.)
3115 *) Add named elliptic curves over binary fields from X9.62, SECG,
3116 and WAP/WTLS; add OIDs that were still missing.
3118 [Sheueling Chang Shantz and Douglas Stebila
3119 (Sun Microsystems Laboratories)]
3121 *) Extend the EC library for elliptic curves over binary fields
3122 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3125 EC_GF2m_simple_method
3129 EC_GROUP_new_curve_GF2m
3130 EC_GROUP_set_curve_GF2m
3131 EC_GROUP_get_curve_GF2m
3132 EC_POINT_set_affine_coordinates_GF2m
3133 EC_POINT_get_affine_coordinates_GF2m
3134 EC_POINT_set_compressed_coordinates_GF2m
3136 Point compression for binary fields is disabled by default for
3137 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3140 As binary polynomials are represented as BIGNUMs, various members
3141 of the EC_GROUP and EC_POINT data structures can be shared
3142 between the implementations for prime fields and binary fields;
3143 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3144 are essentially identical to their ..._GFp counterparts.
3145 (For simplicity, the '..._GFp' prefix has been dropped from
3146 various internal method names.)
3148 An internal 'field_div' method (similar to 'field_mul' and
3149 'field_sqr') has been added; this is used only for binary fields.
3151 [Sheueling Chang Shantz and Douglas Stebila
3152 (Sun Microsystems Laboratories)]
3154 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3155 through methods ('mul', 'precompute_mult').
3157 The generic implementations (now internally called 'ec_wNAF_mul'
3158 and 'ec_wNAF_precomputed_mult') remain the default if these
3159 methods are undefined.
3161 [Sheueling Chang Shantz and Douglas Stebila
3162 (Sun Microsystems Laboratories)]
3164 *) New function EC_GROUP_get_degree, which is defined through
3165 EC_METHOD. For curves over prime fields, this returns the bit
3166 length of the modulus.
3168 [Sheueling Chang Shantz and Douglas Stebila
3169 (Sun Microsystems Laboratories)]
3171 *) New functions EC_GROUP_dup, EC_POINT_dup.
3172 (These simply call ..._new and ..._copy).
3174 [Sheueling Chang Shantz and Douglas Stebila
3175 (Sun Microsystems Laboratories)]
3177 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3178 Polynomials are represented as BIGNUMs (where the sign bit is not
3179 used) in the following functions [macros]:
3182 BN_GF2m_sub [= BN_GF2m_add]
3183 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3184 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3185 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3187 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3188 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3189 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3190 BN_GF2m_cmp [= BN_ucmp]
3192 (Note that only the 'mod' functions are actually for fields GF(2^m).
3193 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3195 For some functions, an the irreducible polynomial defining a
3196 field can be given as an 'unsigned int[]' with strictly
3197 decreasing elements giving the indices of those bits that are set;
3198 i.e., p[] represents the polynomial
3199 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3201 p[0] > p[1] > ... > p[k] = 0.
3202 This applies to the following functions:
3207 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3208 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3210 BN_GF2m_mod_sqrt_arr
3211 BN_GF2m_mod_solve_quad_arr
3215 Conversion can be performed by the following functions:
3220 bntest.c has additional tests for binary polynomial arithmetic.
3222 Two implementations for BN_GF2m_mod_div() are available.
3223 The default algorithm simply uses BN_GF2m_mod_inv() and
3224 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3225 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3226 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3228 [Sheueling Chang Shantz and Douglas Stebila
3229 (Sun Microsystems Laboratories)]
3231 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3232 functionality is disabled at compile-time.
3233 [Douglas Stebila <douglas.stebila@sun.com>]
3235 *) Change default behaviour of 'openssl asn1parse' so that more
3236 information is visible when viewing, e.g., a certificate:
3238 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3239 mode the content of non-printable OCTET STRINGs is output in a
3240 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3241 avoid the appearance of a printable string.
3242 [Nils Larsch <nla@trustcenter.de>]
3244 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3246 EC_GROUP_set_asn1_flag()
3247 EC_GROUP_get_asn1_flag()
3248 EC_GROUP_set_point_conversion_form()
3249 EC_GROUP_get_point_conversion_form()
3250 These control ASN1 encoding details:
3251 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3252 has been set to OPENSSL_EC_NAMED_CURVE.
3253 - Points are encoded in uncompressed form by default; options for
3254 asn1_for are as for point2oct, namely
3255 POINT_CONVERSION_COMPRESSED
3256 POINT_CONVERSION_UNCOMPRESSED
3257 POINT_CONVERSION_HYBRID
3259 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3262 EC_GROUP_get0_seed()
3263 EC_GROUP_get_seed_len()
3264 This is used only for ASN1 purposes (so far).
3265 [Nils Larsch <nla@trustcenter.de>]
3267 *) Add 'field_type' member to EC_METHOD, which holds the NID
3268 of the appropriate field type OID. The new function
3269 EC_METHOD_get_field_type() returns this value.
3270 [Nils Larsch <nla@trustcenter.de>]
3275 EC_POINT_point2hex()
3276 EC_POINT_hex2point()
3277 providing useful interfaces to EC_POINT_point2oct() and
3278 EC_POINT_oct2point().
3279 [Nils Larsch <nla@trustcenter.de>]
3281 *) Change internals of the EC library so that the functions
3282 EC_GROUP_set_generator()
3283 EC_GROUP_get_generator()
3284 EC_GROUP_get_order()
3285 EC_GROUP_get_cofactor()
3286 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3287 to methods, which would lead to unnecessary code duplication when
3288 adding different types of curves.
3289 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3291 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3292 arithmetic, and such that modified wNAFs are generated
3293 (which avoid length expansion in many cases).
3296 *) Add a function EC_GROUP_check_discriminant() (defined via
3297 EC_METHOD) that verifies that the curve discriminant is non-zero.
3299 Add a function EC_GROUP_check() that makes some sanity tests
3300 on a EC_GROUP, its generator and order. This includes
3301 EC_GROUP_check_discriminant().
3302 [Nils Larsch <nla@trustcenter.de>]
3304 *) Add ECDSA in new directory crypto/ecdsa/.
3306 Add applications 'openssl ecparam' and 'openssl ecdsa'
3307 (these are based on 'openssl dsaparam' and 'openssl dsa').
3309 ECDSA support is also included in various other files across the
3310 library. Most notably,
3311 - 'openssl req' now has a '-newkey ecdsa:file' option;
3312 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3313 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3314 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3315 them suitable for ECDSA where domain parameters must be
3316 extracted before the specific public key;
3317 - ECDSA engine support has been added.
3318 [Nils Larsch <nla@trustcenter.de>]
3320 *) Include some named elliptic curves, and add OIDs from X9.62,
3321 SECG, and WAP/WTLS. Each curve can be obtained from the new
3323 EC_GROUP_new_by_curve_name(),
3324 and the list of available named curves can be obtained with
3325 EC_get_builtin_curves().
3326 Also add a 'curve_name' member to EC_GROUP objects, which can be
3328 EC_GROUP_set_curve_name()
3329 EC_GROUP_get_curve_name()
3330 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3332 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3333 was actually never needed) and in BN_mul(). The removal in BN_mul()
3334 required a small change in bn_mul_part_recursive() and the addition
3335 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3336 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3337 bn_sub_words() and bn_add_words() except they take arrays with
3341 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3343 *) Cleanse PEM buffers before freeing them since they may contain
3345 [Benjamin Bennett <ben@psc.edu>]
3347 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3348 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3349 authentication-only ciphersuites.
3352 *) Since AES128 and AES256 share a single mask bit in the logic of
3353 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3354 kludge to work properly if AES128 is available and AES256 isn't.
3357 *) Expand security boundary to match 1.1.1 module.
3360 *) Remove redundant features: hash file source, editing of test vectors
3361 modify fipsld to use external fips_premain.c signature.
3364 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3365 run algorithm test programs.
3368 *) Make algorithm test programs more tolerant of whitespace.
3371 *) Have SSL/TLS server implementation tolerate "mismatched" record
3372 protocol version while receiving ClientHello even if the
3373 ClientHello is fragmented. (The server can't insist on the
3374 particular protocol version it has chosen before the ServerHello
3375 message has informed the client about his choice.)
3378 *) Load error codes if they are not already present instead of using a
3379 static variable. This allows them to be cleanly unloaded and reloaded.
3382 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3384 *) Introduce limits to prevent malicious keys being able to
3385 cause a denial of service. (CVE-2006-2940)
3386 [Steve Henson, Bodo Moeller]
3388 *) Fix ASN.1 parsing of certain invalid structures that can result
3389 in a denial of service. (CVE-2006-2937) [Steve Henson]
3391 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3392 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3394 *) Fix SSL client code which could crash if connecting to a
3395 malicious SSLv2 server. (CVE-2006-4343)
3396 [Tavis Ormandy and Will Drewry, Google Security Team]
3398 *) Change ciphersuite string processing so that an explicit
3399 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3400 will no longer include "AES128-SHA"), and any other similar
3401 ciphersuite (same bitmap) from *other* protocol versions (so that
3402 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3403 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3404 changes from 0.9.8b and 0.9.8d.
3407 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3409 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3410 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3412 *) Change the Unix randomness entropy gathering to use poll() when
3413 possible instead of select(), since the latter has some
3414 undesirable limitations.
3415 [Darryl Miles via Richard Levitte and Bodo Moeller]
3417 *) Disable rogue ciphersuites:
3419 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3420 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3421 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3423 The latter two were purportedly from
3424 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3427 Also deactive the remaining ciphersuites from
3428 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3429 unofficial, and the ID has long expired.
3432 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3433 dual-core machines) and other potential thread-safety issues.
3436 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3438 *) Adapt fipsld and the build system to link against the validated FIPS
3439 module in FIPS mode.
3442 *) Fixes for VC++ 2005 build under Windows.
3445 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3446 from a Windows bash shell such as MSYS. It is autodetected from the
3447 "config" script when run from a VC++ environment. Modify standard VC++
3448 build to use fipscanister.o from the GNU make build.
3451 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3453 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3454 The value now differs depending on if you build for FIPS or not.
3455 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3456 safely run with a non-FIPSed libcrypto, as it may crash because of
3457 the difference induced by this change.
3460 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3462 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3463 (part of SSL_OP_ALL). This option used to disable the
3464 countermeasure against man-in-the-middle protocol-version
3465 rollback in the SSL 2.0 server implementation, which is a bad
3466 idea. (CVE-2005-2969)
3468 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3469 for Information Security, National Institute of Advanced Industrial
3470 Science and Technology [AIST], Japan)]
3472 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3473 mainly for FIPS compliance and not fully integrated at this stage.
3476 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3477 the exponentiation using a fixed-length exponent. (Otherwise,
3478 the information leaked through timing could expose the secret key
3479 after many signatures; cf. Bleichenbacher's attack on DSA with
3483 *) Make a new fixed-window mod_exp implementation the default for
3484 RSA, DSA, and DH private-key operations so that the sequence of
3485 squares and multiplies and the memory access pattern are
3486 independent of the particular secret key. This will mitigate
3487 cache-timing and potential related attacks.
3489 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3490 and this is automatically used by BN_mod_exp_mont() if the new flag
3491 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3492 will use this BN flag for private exponents unless the flag
3493 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3494 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3496 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3498 *) Change the client implementation for SSLv23_method() and
3499 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3500 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3501 (Previously, the SSL 2.0 backwards compatible Client Hello
3502 message format would be used even with SSL_OP_NO_SSLv2.)
3505 *) Add support for smime-type MIME parameter in S/MIME messages which some
3509 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3510 a threadsafe manner. Modify rsa code to use new function and add calls
3511 to dsa and dh code (which had race conditions before).
3514 *) Include the fixed error library code in the C error file definitions
3515 instead of fixing them up at runtime. This keeps the error code
3516 structures constant.
3519 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3521 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3524 *) Fixes for newer kerberos headers. NB: the casts are needed because
3525 the 'length' field is signed on one version and unsigned on another
3526 with no (?) obvious way to tell the difference, without these VC++
3527 complains. Also the "definition" of FAR (blank) is no longer included
3528 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3529 some needed definitions.
3532 *) Undo Cygwin change.
3535 *) Added support for proxy certificates according to RFC 3820.
3536 Because they may be a security thread to unaware applications,
3537 they must be explicitely allowed in run-time. See
3538 docs/HOWTO/proxy_certificates.txt for further information.
3541 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3543 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3544 server and client random values. Previously
3545 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3546 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3548 This change has negligible security impact because:
3550 1. Server and client random values still have 24 bytes of pseudo random
3553 2. Server and client random values are sent in the clear in the initial
3556 3. The master secret is derived using the premaster secret (48 bytes in
3557 size for static RSA ciphersuites) as well as client server and random
3560 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3563 [Stephen Henson, reported by UK NISCC]
3565 *) Use Windows randomness collection on Cygwin.
3568 *) Fix hang in EGD/PRNGD query when communication socket is closed
3569 prematurely by EGD/PRNGD.
3570 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3572 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3575 *) Back-port of selected performance improvements from development
3576 branch, as well as improved support for PowerPC platforms.
3579 *) Add lots of checks for memory allocation failure, error codes to indicate
3580 failure and freeing up memory if a failure occurs.
3581 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3583 *) Add new -passin argument to dgst.
3586 *) Perform some character comparisons of different types in X509_NAME_cmp:
3587 this is needed for some certificates that reencode DNs into UTF8Strings
3588 (in violation of RFC3280) and can't or wont issue name rollover
3592 *) Make an explicit check during certificate validation to see that
3593 the CA setting in each certificate on the chain is correct. As a
3594 side effect always do the following basic checks on extensions,
3595 not just when there's an associated purpose to the check:
3597 - if there is an unhandled critical extension (unless the user
3598 has chosen to ignore this fault)
3599 - if the path length has been exceeded (if one is set at all)
3600 - that certain extensions fit the associated purpose (if one has
3604 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3606 *) Avoid a race condition when CRLs are checked in a multi threaded
3607 environment. This would happen due to the reordering of the revoked
3608 entries during signature checking and serial number lookup. Now the
3609 encoding is cached and the serial number sort performed under a lock.
3610 Add new STACK function sk_is_sorted().
3613 *) Add Delta CRL to the extension code.
3616 *) Various fixes to s3_pkt.c so alerts are sent properly.
3617 [David Holmes <d.holmes@f5.com>]
3619 *) Reduce the chances of duplicate issuer name and serial numbers (in
3620 violation of RFC3280) using the OpenSSL certificate creation utilities.
3621 This is done by creating a random 64 bit value for the initial serial
3622 number when a serial number file is created or when a self signed
3623 certificate is created using 'openssl req -x509'. The initial serial
3624 number file is created using 'openssl x509 -next_serial' in CA.pl
3625 rather than being initialized to 1.
3628 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3630 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3631 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3632 [Joe Orton, Steve Henson]
3634 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3636 [Joe Orton, Steve Henson]
3638 *) Make it possible to have multiple active certificates with the same
3639 subject in the CA index file. This is done only if the keyword
3640 'unique_subject' is set to 'no' in the main CA section (default
3641 if 'CA_default') of the configuration file. The value is saved
3642 with the database itself in a separate index attribute file,
3643 named like the index file with '.attr' appended to the name.
3646 *) X509 verify fixes. Disable broken certificate workarounds when
3647 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3648 keyUsage extension present. Don't accept CRLs with unhandled critical
3649 extensions: since verify currently doesn't process CRL extensions this
3650 rejects a CRL with *any* critical extensions. Add new verify error codes
3654 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3655 A clarification of RFC2560 will require the use of OCTET STRINGs and
3656 some implementations cannot handle the current raw format. Since OpenSSL
3657 copies and compares OCSP nonces as opaque blobs without any attempt at
3658 parsing them this should not create any compatibility issues.
3661 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3662 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3663 this HMAC (and other) operations are several times slower than OpenSSL
3667 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3668 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3670 *) Use the correct content when signing type "other".
3673 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3675 *) Fix various bugs revealed by running the NISCC test suite:
3677 Stop out of bounds reads in the ASN1 code when presented with
3678 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3680 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3682 If verify callback ignores invalid public key errors don't try to check
3683 certificate signature with the NULL public key.
3687 *) New -ignore_err option in ocsp application to stop the server
3688 exiting on the first error in a request.
3691 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3692 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3696 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3697 extra data after the compression methods not only for TLS 1.0
3698 but also for SSL 3.0 (as required by the specification).
3699 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3701 *) Change X509_certificate_type() to mark the key as exported/exportable
3702 when it's 512 *bits* long, not 512 bytes.
3705 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3706 blocks during encryption.
3709 *) Various fixes to base64 BIO and non blocking I/O. On write
3710 flushes were not handled properly if the BIO retried. On read
3711 data was not being buffered properly and had various logic bugs.
3712 This also affects blocking I/O when the data being decoded is a
3716 *) Various S/MIME bugfixes and compatibility changes:
3717 output correct application/pkcs7 MIME type if
3718 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3719 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3720 of files as .eml work). Correctly handle very long lines in MIME
3724 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3726 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3727 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
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