5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Support for fixed DH ciphersuites: those requiring DH server
11 *) Transparently support X9.42 DH parameters when calling
12 PEM_read_bio_DHparameters. This means existing applications can handle
13 the new parameter format automatically.
16 *) Initial experimental support for X9.42 DH parameter format: mainly
17 to support use of 'q' parameter for RFC5114 parameters.
20 *) Add DH parameters from RFC5114 including test data to dhtest.
23 *) Update fips_test_suite to support multiple command line options. New
24 test to induce all self test errors in sequence and check expected
28 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
29 sign or verify all in one operation.
32 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
33 test programs and fips_test_suite. Includes functionality to parse
34 the minimal script output of fipsalgest.pl directly.
37 *) Add authorisation parameter to FIPS_module_mode_set().
40 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
43 *) Use separate DRBG fields for internal and external flags. New function
44 FIPS_drbg_health_check() to perform on demand health checking. Add
45 generation tests to fips_test_suite with reduced health check interval to
46 demonstrate periodic health checking. Add "nodh" option to
47 fips_test_suite to skip very slow DH test.
50 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
54 *) More extensive health check for DRBG checking many more failure modes.
55 New function FIPS_selftest_drbg_all() to handle every possible DRBG
56 combination: call this in fips_test_suite.
59 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
60 and POST to handle Dual EC cases.
63 *) Add support for canonical generation of DSA parameter 'g'. See
66 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
67 POST to handle HMAC cases.
70 *) Add functions FIPS_module_version() and FIPS_module_version_text()
71 to return numberical and string versions of the FIPS module number.
74 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
75 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
76 outside the validated module in the FIPS capable OpenSSL.
79 *) Minor change to DRBG entropy callback semantics. In some cases
80 there is no mutiple of the block length between min_len and
81 max_len. Allow the callback to return more than max_len bytes
82 of entropy but discard any extra: it is the callback's responsibility
83 to ensure that the extra data discarded does not impact the
84 requested amount of entropy.
87 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
88 information in FIPS186-3, SP800-57 and SP800-131A.
91 *) CCM support via EVP. Interface is very similar to GCM case except we
92 must supply all data in one chunk (i.e. no update, final) and the
93 message length must be supplied if AAD is used. Add algorithm test
97 *) Initial version of POST overhaul. Add POST callback to allow the status
98 of POST to be monitored and/or failures induced. Modify fips_test_suite
99 to use callback. Always run all selftests even if one fails.
102 *) XTS support including algorithm test driver in the fips_gcmtest program.
103 Note: this does increase the maximum key length from 32 to 64 bytes but
104 there should be no binary compatibility issues as existing applications
105 will never use XTS mode.
108 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
109 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
110 performs algorithm blocking for unapproved PRNG types. Also do not
111 set PRNG type in FIPS_mode_set(): leave this to the application.
112 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
113 the standard OpenSSL PRNG: set additional data to a date time vector.
116 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
117 This shouldn't present any incompatibility problems because applications
118 shouldn't be using these directly and any that are will need to rethink
119 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
122 *) Extensive self tests and health checking required by SP800-90 DRBG.
123 Remove strength parameter from FIPS_drbg_instantiate and always
124 instantiate at maximum supported strength.
127 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
130 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
133 *) New function DH_compute_key_padded() to compute a DH key and pad with
134 leading zeroes if needed: this complies with SP800-56A et al.
137 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
138 anything, incomplete, subject to change and largely untested at present.
141 *) Modify fipscanisteronly build option to only build the necessary object
142 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
145 *) Add experimental option FIPSSYMS to give all symbols in
146 fipscanister.o and FIPS or fips prefix. This will avoid
147 conflicts with future versions of OpenSSL. Add perl script
148 util/fipsas.pl to preprocess assembly language source files
149 and rename any affected symbols.
152 *) Add selftest checks and algorithm block of non-fips algorithms in
153 FIPS mode. Remove DES2 from selftests.
156 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
157 return internal method without any ENGINE dependencies. Add new
158 tiny fips sign and verify functions.
161 *) New build option no-ec2m to disable characteristic 2 code.
164 *) New build option "fipscanisteronly". This only builds fipscanister.o
165 and (currently) associated fips utilities. Uses the file Makefile.fips
166 instead of Makefile.org as the prototype.
169 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
170 Update fips_gcmtest to use IV generator.
173 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
174 setting output buffer to NULL. The *Final function must be
175 called although it will not retrieve any additional data. The tag
176 can be set or retrieved with a ctrl. The IV length is by default 12
177 bytes (96 bits) but can be set to an alternative value. If the IV
178 length exceeds the maximum IV length (currently 16 bytes) it cannot be
182 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
183 underlying do_cipher function handles all cipher semantics itself
184 including padding and finalisation. This is useful if (for example)
185 an ENGINE cipher handles block padding itself. The behaviour of
186 do_cipher is subtly changed if this flag is set: the return value
187 is the number of characters written to the output buffer (zero is
188 no longer an error code) or a negative error code. Also if the
189 input buffer is NULL and length 0 finalisation should be performed.
192 *) If a candidate issuer certificate is already part of the constructed
193 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
196 *) Improve forward-security support: add functions
198 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
199 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
201 for use by SSL/TLS servers; the callback function will be called whenever a
202 new session is created, and gets to decide whether the session may be
203 cached to make it resumable (return 0) or not (return 1). (As by the
204 SSL/TLS protocol specifications, the session_id sent by the server will be
205 empty to indicate that the session is not resumable; also, the server will
206 not generate RFC 4507 (RFC 5077) session tickets.)
208 A simple reasonable callback implementation is to return is_forward_secure.
209 This parameter will be set to 1 or 0 depending on the ciphersuite selected
210 by the SSL/TLS server library, indicating whether it can provide forward
212 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
214 *) New function OPENSSL_gmtime_diff to find the difference in days
215 and seconds between two tm structures. This will be used to provide
216 additional functionality for ASN1_TIME.
219 *) Add -trusted_first option which attempts to find certificates in the
220 trusted store even if an untrusted chain is also supplied.
223 *) Initial experimental support for explicitly trusted non-root CAs.
224 OpenSSL still tries to build a complete chain to a root but if an
225 intermediate CA has a trust setting included that is used. The first
226 setting is used: whether to trust or reject.
229 *) New -verify_name option in command line utilities to set verification
233 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
234 Add CMAC pkey methods.
237 *) Experimental regnegotiation in s_server -www mode. If the client
238 browses /reneg connection is renegotiated. If /renegcert it is
239 renegotiated requesting a certificate.
242 *) Add an "external" session cache for debugging purposes to s_server. This
243 should help trace issues which normally are only apparent in deployed
244 multi-process servers.
247 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
248 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
249 BIO_set_cipher() and some obscure PEM functions were changed so they
250 can now return an error. The RAND changes required a change to the
251 RAND_METHOD structure.
254 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
255 a gcc attribute to warn if the result of a function is ignored. This
256 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
257 whose return value is often ignored.
260 Changes between 1.0.0f and 1.0.1 [xx XXX xxxx]
262 *) Add support for TLS/DTLS heartbeats.
263 [Robin Seggelmann <seggelmann@fh-muenster.de>]
265 *) Add support for SCTP.
266 [Robin Seggelmann <seggelmann@fh-muenster.de>]
268 *) Improved PRNG seeding for VOS.
269 [Paul Green <Paul.Green@stratus.com>]
271 *) Extensive assembler packs updates, most notably:
273 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
274 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
275 - x86_64: bit-sliced AES implementation;
276 - ARM: NEON support, contemporary platforms optimizations;
277 - s390x: z196 support;
278 - *: GHASH and GF(2^m) multiplication implementations;
282 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
283 (removal of unnecessary code)
284 [Peter Sylvester <peter.sylvester@edelweb.fr>]
286 *) Add TLS key material exporter from RFC 5705.
289 *) Add DTLS-SRTP negotiation from RFC 5764.
292 *) Add Next Protocol Negotiation,
293 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
294 disabled with a no-npn flag to config or Configure. Code donated
296 [Adam Langley <agl@google.com> and Ben Laurie]
298 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
299 NIST-P256, NIST-P521, with constant-time single point multiplication on
300 typical inputs. Compiler support for the nonstandard type __uint128_t is
301 required to use this (present in gcc 4.4 and later, for 64-bit builds).
302 Code made available under Apache License version 2.0.
304 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
305 line to include this in your build of OpenSSL, and run "make depend" (or
306 "make update"). This enables the following EC_METHODs:
308 EC_GFp_nistp224_method()
309 EC_GFp_nistp256_method()
310 EC_GFp_nistp521_method()
312 EC_GROUP_new_by_curve_name() will automatically use these (while
313 EC_GROUP_new_curve_GFp() currently prefers the more flexible
315 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
317 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
318 all platforms. Move ssize_t definition from e_os.h to the public
319 header file e_os2.h as it now appears in public header file cms.h
322 *) New -sigopt option to the ca, req and x509 utilities. Additional
323 signature parameters can be passed using this option and in
327 *) Add RSA PSS signing function. This will generate and set the
328 appropriate AlgorithmIdentifiers for PSS based on those in the
329 corresponding EVP_MD_CTX structure. No application support yet.
332 *) Support for companion algorithm specific ASN1 signing routines.
333 New function ASN1_item_sign_ctx() signs a pre-initialised
334 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
335 the appropriate parameters.
338 *) Add new algorithm specific ASN1 verification initialisation function
339 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
340 handling will be the same no matter what EVP_PKEY_METHOD is used.
341 Add a PSS handler to support verification of PSS signatures: checked
342 against a number of sample certificates.
345 *) Add signature printing for PSS. Add PSS OIDs.
346 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
348 *) Add algorithm specific signature printing. An individual ASN1 method
349 can now print out signatures instead of the standard hex dump.
351 More complex signatures (e.g. PSS) can print out more meaningful
352 information. Include DSA version that prints out the signature
356 *) Password based recipient info support for CMS library: implementing
360 *) Split password based encryption into PBES2 and PBKDF2 functions. This
361 neatly separates the code into cipher and PBE sections and is required
362 for some algorithms that split PBES2 into separate pieces (such as
366 *) Session-handling fixes:
367 - Fix handling of connections that are resuming with a session ID,
368 but also support Session Tickets.
369 - Fix a bug that suppressed issuing of a new ticket if the client
370 presented a ticket with an expired session.
371 - Try to set the ticket lifetime hint to something reasonable.
372 - Make tickets shorter by excluding irrelevant information.
373 - On the client side, don't ignore renewed tickets.
374 [Adam Langley, Bodo Moeller (Google)]
376 *) Fix PSK session representation.
379 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
381 This work was sponsored by Intel.
384 *) Add GCM support to TLS library. Some custom code is needed to split
385 the IV between the fixed (from PRF) and explicit (from TLS record)
386 portions. This adds all GCM ciphersuites supported by RFC5288 and
387 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
388 add a special AESGCM string for GCM only.
391 *) Expand range of ctrls for AES GCM. Permit setting invocation
392 field on decrypt and retrieval of invocation field only on encrypt.
395 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
396 As required by RFC5289 these ciphersuites cannot be used if for
397 versions of TLS earlier than 1.2.
400 *) For FIPS capable OpenSSL interpret a NULL default public key method
401 as unset and return the appopriate default but do *not* set the default.
402 This means we can return the appopriate method in applications that
403 swicth between FIPS and non-FIPS modes.
406 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
407 ENGINE is used then we cannot handle that in the FIPS module so we
408 keep original code iff non-FIPS operations are allowed.
411 *) Add -attime option to openssl utilities.
412 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
414 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
417 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
418 FIPS EC methods unconditionally for now.
421 *) New build option no-ec2m to disable characteristic 2 code.
424 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
425 all cases can be covered as some introduce binary incompatibilities.
428 *) Redirect RSA operations to FIPS module including keygen,
429 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
432 *) Add similar low level API blocking to ciphers.
435 *) Low level digest APIs are not approved in FIPS mode: any attempt
436 to use these will cause a fatal error. Applications that *really* want
437 to use them can use the private_* version instead.
440 *) Redirect cipher operations to FIPS module for FIPS builds.
443 *) Redirect digest operations to FIPS module for FIPS builds.
446 *) Update build system to add "fips" flag which will link in fipscanister.o
447 for static and shared library builds embedding a signature if needed.
450 *) Output TLS supported curves in preference order instead of numerical
451 order. This is currently hardcoded for the highest order curves first.
452 This should be configurable so applications can judge speed vs strength.
455 *) Add TLS v1.2 server support for client authentication.
458 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
462 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
463 FIPS modules versions.
466 *) Add TLS v1.2 client side support for client authentication. Keep cache
467 of handshake records longer as we don't know the hash algorithm to use
468 until after the certificate request message is received.
471 *) Initial TLS v1.2 client support. Add a default signature algorithms
472 extension including all the algorithms we support. Parse new signature
473 format in client key exchange. Relax some ECC signing restrictions for
474 TLS v1.2 as indicated in RFC5246.
477 *) Add server support for TLS v1.2 signature algorithms extension. Switch
478 to new signature format when needed using client digest preference.
479 All server ciphersuites should now work correctly in TLS v1.2. No client
480 support yet and no support for client certificates.
483 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
484 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
485 ciphersuites. At present only RSA key exchange ciphersuites work with
486 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
487 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
488 and version checking.
491 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
492 with this defined it will not be affected by any changes to ssl internal
493 structures. Add several utility functions to allow openssl application
494 to work with OPENSSL_NO_SSL_INTERN defined.
498 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
500 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
503 *) Permit abbreviated handshakes when renegotiating using the function
504 SSL_renegotiate_abbreviated().
505 [Robin Seggelmann <seggelmann@fh-muenster.de>]
507 *) Add call to ENGINE_register_all_complete() to
508 ENGINE_load_builtin_engines(), so some implementations get used
509 automatically instead of needing explicit application support.
512 *) Add support for TLS key exporter as described in RFC5705.
513 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
515 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
516 a few changes are required:
518 Add SSL_OP_NO_TLSv1_1 flag.
520 Update version checking logic to handle version 1.1.
521 Add explicit IV handling (ported from DTLS code).
522 Add command line options to s_client/s_server.
525 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
527 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
528 Thanks to Antonio Martin, Enterprise Secure Access Research and
529 Development, Cisco Systems, Inc. for discovering this bug and
530 preparing a fix. (CVE-2012-0050)
533 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
535 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
536 of the Vaudenay padding oracle attack on CBC mode encryption
537 which enables an efficient plaintext recovery attack against
538 the OpenSSL implementation of DTLS. Their attack exploits timing
539 differences arising during decryption processing. A research
540 paper describing this attack can be found at:
541 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
542 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
543 Security Group at Royal Holloway, University of London
544 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
545 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
546 for preparing the fix. (CVE-2011-4108)
547 [Robin Seggelmann, Michael Tuexen]
549 *) Clear bytes used for block padding of SSL 3.0 records.
551 [Adam Langley (Google)]
553 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
554 Kadianakis <desnacked@gmail.com> for discovering this issue and
555 Adam Langley for preparing the fix. (CVE-2011-4619)
556 [Adam Langley (Google)]
558 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
559 [Andrey Kulikov <amdeich@gmail.com>]
561 *) Prevent malformed RFC3779 data triggering an assertion failure.
562 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
563 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
564 [Rob Austein <sra@hactrn.net>]
566 *) Improved PRNG seeding for VOS.
567 [Paul Green <Paul.Green@stratus.com>]
569 *) Fix ssl_ciph.c set-up race.
570 [Adam Langley (Google)]
572 *) Fix spurious failures in ecdsatest.c.
573 [Emilia Käsper (Google)]
575 *) Fix the BIO_f_buffer() implementation (which was mixing different
576 interpretations of the '..._len' fields).
577 [Adam Langley (Google)]
579 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
580 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
581 threads won't reuse the same blinding coefficients.
583 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
584 lock to call BN_BLINDING_invert_ex, and avoids one use of
585 BN_BLINDING_update for each BN_BLINDING structure (previously,
586 the last update always remained unused).
587 [Emilia Käsper (Google)]
589 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
590 [Bob Buckholz (Google)]
592 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
594 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
595 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
596 [Kaspar Brand <ossl@velox.ch>]
598 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
599 for multi-threaded use of ECDH. (CVE-2011-3210)
600 [Adam Langley (Google)]
602 *) Fix x509_name_ex_d2i memory leak on bad inputs.
605 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
606 signature public key algorithm by using OID xref utilities instead.
607 Before this you could only use some ECC ciphersuites with SHA1 only.
610 *) Add protection against ECDSA timing attacks as mentioned in the paper
611 by Billy Bob Brumley and Nicola Tuveri, see:
613 http://eprint.iacr.org/2011/232.pdf
615 [Billy Bob Brumley and Nicola Tuveri]
617 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
619 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
620 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
622 *) Fix bug in string printing code: if *any* escaping is enabled we must
623 escape the escape character (backslash) or the resulting string is
627 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
629 *) Disable code workaround for ancient and obsolete Netscape browsers
630 and servers: an attacker can use it in a ciphersuite downgrade attack.
631 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
634 *) Fixed J-PAKE implementation error, originally discovered by
635 Sebastien Martini, further info and confirmation from Stefan
636 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
639 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
641 *) Fix extension code to avoid race conditions which can result in a buffer
642 overrun vulnerability: resumed sessions must not be modified as they can
643 be shared by multiple threads. CVE-2010-3864
646 *) Fix WIN32 build system to correctly link an ENGINE directory into
650 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
652 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
654 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
656 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
658 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
659 context. The operation can be customised via the ctrl mechanism in
660 case ENGINEs want to include additional functionality.
663 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
666 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
667 output hashes compatible with older versions of OpenSSL.
668 [Willy Weisz <weisz@vcpc.univie.ac.at>]
670 *) Fix compression algorithm handling: if resuming a session use the
671 compression algorithm of the resumed session instead of determining
672 it from client hello again. Don't allow server to change algorithm.
675 *) Add load_crls() function to apps tidying load_certs() too. Add option
676 to verify utility to allow additional CRLs to be included.
679 *) Update OCSP request code to permit adding custom headers to the request:
680 some responders need this.
683 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
685 [Julia Lawall <julia@diku.dk>]
687 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
688 needlessly dereferenced structures, used obsolete functions and
689 didn't handle all updated verify codes correctly.
692 *) Disable MD2 in the default configuration.
695 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
696 indicate the initial BIO being pushed or popped. This makes it possible
697 to determine whether the BIO is the one explicitly called or as a result
698 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
699 it handles reference counts correctly and doesn't zero out the I/O bio
700 when it is not being explicitly popped. WARNING: applications which
701 included workarounds for the old buggy behaviour will need to be modified
702 or they could free up already freed BIOs.
705 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
706 renaming to all platforms (within the 0.9.8 branch, this was
707 done conditionally on Netware platforms to avoid a name clash).
708 [Guenter <lists@gknw.net>]
710 *) Add ECDHE and PSK support to DTLS.
711 [Michael Tuexen <tuexen@fh-muenster.de>]
713 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
717 *) Add "missing" function EVP_MD_flags() (without this the only way to
718 retrieve a digest flags is by accessing the structure directly. Update
719 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
720 or cipher is registered as in the "from" argument. Print out all
721 registered digests in the dgst usage message instead of manually
722 attempting to work them out.
725 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
726 this allows the use of compression and extensions. Change default cipher
727 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
728 by default unless an application cipher string requests it.
731 *) Alter match criteria in PKCS12_parse(). It used to try to use local
732 key ids to find matching certificates and keys but some PKCS#12 files
733 don't follow the (somewhat unwritten) rules and this strategy fails.
734 Now just gather all certificates together and the first private key
735 then look for the first certificate that matches the key.
738 *) Support use of registered digest and cipher names for dgst and cipher
739 commands instead of having to add each one as a special case. So now
746 openssl dgst -sha256 foo
748 and this works for ENGINE based algorithms too.
752 *) Update Gost ENGINE to support parameter files.
753 [Victor B. Wagner <vitus@cryptocom.ru>]
755 *) Support GeneralizedTime in ca utility.
756 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
758 *) Enhance the hash format used for certificate directory links. The new
759 form uses the canonical encoding (meaning equivalent names will work
760 even if they aren't identical) and uses SHA1 instead of MD5. This form
761 is incompatible with the older format and as a result c_rehash should
762 be used to rebuild symbolic links.
765 *) Make PKCS#8 the default write format for private keys, replacing the
766 traditional format. This form is standardised, more secure and doesn't
767 include an implicit MD5 dependency.
770 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
771 committed to OpenSSL should pass this lot as a minimum.
774 *) Add session ticket override functionality for use by EAP-FAST.
775 [Jouni Malinen <j@w1.fi>]
777 *) Modify HMAC functions to return a value. Since these can be implemented
778 in an ENGINE errors can occur.
781 *) Type-checked OBJ_bsearch_ex.
784 *) Type-checked OBJ_bsearch. Also some constification necessitated
785 by type-checking. Still to come: TXT_DB, bsearch(?),
786 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
790 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
791 seconds to a tm structure directly, instead of going through OS
792 specific date routines. This avoids any issues with OS routines such
793 as the year 2038 bug. New *_adj() functions for ASN1 time structures
794 and X509_time_adj_ex() to cover the extended range. The existing
795 X509_time_adj() is still usable and will no longer have any date issues.
798 *) Delta CRL support. New use deltas option which will attempt to locate
799 and search any appropriate delta CRLs available.
801 This work was sponsored by Google.
804 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
805 code and add additional score elements. Validate alternate CRL paths
806 as part of the CRL checking and indicate a new error "CRL path validation
807 error" in this case. Applications wanting additional details can use
808 the verify callback and check the new "parent" field. If this is not
809 NULL CRL path validation is taking place. Existing applications wont
810 see this because it requires extended CRL support which is off by
813 This work was sponsored by Google.
816 *) Support for freshest CRL extension.
818 This work was sponsored by Google.
821 *) Initial indirect CRL support. Currently only supported in the CRLs
822 passed directly and not via lookup. Process certificate issuer
823 CRL entry extension and lookup CRL entries by bother issuer name
824 and serial number. Check and process CRL issuer entry in IDP extension.
826 This work was sponsored by Google.
829 *) Add support for distinct certificate and CRL paths. The CRL issuer
830 certificate is validated separately in this case. Only enabled if
831 an extended CRL support flag is set: this flag will enable additional
832 CRL functionality in future.
834 This work was sponsored by Google.
837 *) Add support for policy mappings extension.
839 This work was sponsored by Google.
842 *) Fixes to pathlength constraint, self issued certificate handling,
843 policy processing to align with RFC3280 and PKITS tests.
845 This work was sponsored by Google.
848 *) Support for name constraints certificate extension. DN, email, DNS
849 and URI types are currently supported.
851 This work was sponsored by Google.
854 *) To cater for systems that provide a pointer-based thread ID rather
855 than numeric, deprecate the current numeric thread ID mechanism and
856 replace it with a structure and associated callback type. This
857 mechanism allows a numeric "hash" to be extracted from a thread ID in
858 either case, and on platforms where pointers are larger than 'long',
859 mixing is done to help ensure the numeric 'hash' is usable even if it
860 can't be guaranteed unique. The default mechanism is to use "&errno"
861 as a pointer-based thread ID to distinguish between threads.
863 Applications that want to provide their own thread IDs should now use
864 CRYPTO_THREADID_set_callback() to register a callback that will call
865 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
867 Note that ERR_remove_state() is now deprecated, because it is tied
868 to the assumption that thread IDs are numeric. ERR_remove_state(0)
869 to free the current thread's error state should be replaced by
870 ERR_remove_thread_state(NULL).
872 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
873 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
874 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
875 application was previously providing a numeric thread callback that
876 was inappropriate for distinguishing threads, then uniqueness might
877 have been obtained with &errno that happened immediately in the
878 intermediate development versions of OpenSSL; this is no longer the
879 case, the numeric thread callback will now override the automatic use
881 [Geoff Thorpe, with help from Bodo Moeller]
883 *) Initial support for different CRL issuing certificates. This covers a
884 simple case where the self issued certificates in the chain exist and
885 the real CRL issuer is higher in the existing chain.
887 This work was sponsored by Google.
890 *) Removed effectively defunct crypto/store from the build.
893 *) Revamp of STACK to provide stronger type-checking. Still to come:
894 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
895 ASN1_STRING, CONF_VALUE.
898 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
899 RAM on SSL connections. This option can save about 34k per idle SSL.
902 *) Revamp of LHASH to provide stronger type-checking. Still to come:
903 STACK, TXT_DB, bsearch, qsort.
906 *) Initial support for Cryptographic Message Syntax (aka CMS) based
907 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
908 support for data, signedData, compressedData, digestedData and
909 encryptedData, envelopedData types included. Scripts to check against
910 RFC4134 examples draft and interop and consistency checks of many
911 content types and variants.
914 *) Add options to enc utility to support use of zlib compression BIO.
917 *) Extend mk1mf to support importing of options and assembly language
918 files from Configure script, currently only included in VC-WIN32.
919 The assembly language rules can now optionally generate the source
920 files from the associated perl scripts.
923 *) Implement remaining functionality needed to support GOST ciphersuites.
924 Interop testing has been performed using CryptoPro implementations.
925 [Victor B. Wagner <vitus@cryptocom.ru>]
927 *) s390x assembler pack.
930 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
934 *) Implement Opaque PRF Input TLS extension as specified in
935 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
936 official specification yet and no extension type assignment by
937 IANA exists, this extension (for now) will have to be explicitly
938 enabled when building OpenSSL by providing the extension number
939 to use. For example, specify an option
941 -DTLSEXT_TYPE_opaque_prf_input=0x9527
943 to the "config" or "Configure" script to enable the extension,
944 assuming extension number 0x9527 (which is a completely arbitrary
945 and unofficial assignment based on the MD5 hash of the Internet
946 Draft). Note that by doing so, you potentially lose
947 interoperability with other TLS implementations since these might
948 be using the same extension number for other purposes.
950 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
951 opaque PRF input value to use in the handshake. This will create
952 an interal copy of the length-'len' string at 'src', and will
953 return non-zero for success.
955 To get more control and flexibility, provide a callback function
958 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
959 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
963 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
966 Callback function 'cb' will be called in handshakes, and is
967 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
968 Argument 'arg' is for application purposes (the value as given to
969 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
970 be provided to the callback function). The callback function
971 has to return non-zero to report success: usually 1 to use opaque
972 PRF input just if possible, or 2 to enforce use of the opaque PRF
973 input. In the latter case, the library will abort the handshake
974 if opaque PRF input is not successfully negotiated.
976 Arguments 'peerinput' and 'len' given to the callback function
977 will always be NULL and 0 in the case of a client. A server will
978 see the client's opaque PRF input through these variables if
979 available (NULL and 0 otherwise). Note that if the server
980 provides an opaque PRF input, the length must be the same as the
981 length of the client's opaque PRF input.
983 Note that the callback function will only be called when creating
984 a new session (session resumption can resume whatever was
985 previously negotiated), and will not be called in SSL 2.0
986 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
987 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
988 for applications that need to enforce opaque PRF input.
992 *) Update ssl code to support digests other than SHA1+MD5 for handshake
995 [Victor B. Wagner <vitus@cryptocom.ru>]
997 *) Add RFC4507 support to OpenSSL. This includes the corrections in
998 RFC4507bis. The encrypted ticket format is an encrypted encoded
999 SSL_SESSION structure, that way new session features are automatically
1002 If a client application caches session in an SSL_SESSION structure
1003 support is transparent because tickets are now stored in the encoded
1006 The SSL_CTX structure automatically generates keys for ticket
1007 protection in servers so again support should be possible
1008 with no application modification.
1010 If a client or server wishes to disable RFC4507 support then the option
1011 SSL_OP_NO_TICKET can be set.
1013 Add a TLS extension debugging callback to allow the contents of any client
1014 or server extensions to be examined.
1016 This work was sponsored by Google.
1019 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1020 OpenSSL should now compile cleanly on gcc 4.2
1021 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1023 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1024 support including streaming MAC support: this is required for GOST
1025 ciphersuite support.
1026 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1028 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1029 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1030 to output in BER and PEM format.
1033 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1034 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1035 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1036 ENGINE support for HMAC keys which are unextractable. New -mac and
1037 -macopt options to dgst utility.
1040 *) New option -sigopt to dgst utility. Update dgst to use
1041 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1042 alternative signing paramaters such as X9.31 or PSS in the dgst
1046 *) Change ssl_cipher_apply_rule(), the internal function that does
1047 the work each time a ciphersuite string requests enabling
1048 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1049 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1050 the order of disabled ciphersuites such that those ciphersuites
1051 that most recently went from enabled to disabled not only stay
1052 in order with respect to each other, but also have higher priority
1053 than other disabled ciphersuites the next time ciphersuites are
1056 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1057 the same ciphersuites as with "HIGH" alone, but in a specific
1058 order where the PSK ciphersuites come first (since they are the
1059 most recently disabled ciphersuites when "HIGH" is parsed).
1061 Also, change ssl_create_cipher_list() (using this new
1062 funcionality) such that between otherwise identical
1063 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1067 *) Change ssl_create_cipher_list() so that it automatically
1068 arranges the ciphersuites in reasonable order before starting
1069 to process the rule string. Thus, the definition for "DEFAULT"
1070 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1071 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1072 This makes it much easier to arrive at a reasonable default order
1073 in applications for which anonymous ciphers are OK (meaning
1074 that you can't actually use DEFAULT).
1075 [Bodo Moeller; suggested by Victor Duchovni]
1077 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1078 processing) into multiple integers instead of setting
1079 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1080 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1081 (These masks as well as the individual bit definitions are hidden
1082 away into the non-exported interface ssl/ssl_locl.h, so this
1083 change to the definition of the SSL_CIPHER structure shouldn't
1084 affect applications.) This give us more bits for each of these
1085 categories, so there is no longer a need to coagulate AES128 and
1086 AES256 into a single algorithm bit, and to coagulate Camellia128
1087 and Camellia256 into a single algorithm bit, which has led to all
1090 Thus, among other things, the kludge introduced in 0.9.7m and
1091 0.9.8e for masking out AES256 independently of AES128 or masking
1092 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1094 With the change, we also introduce new ciphersuite aliases that
1095 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1099 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1100 Use the leftmost N bytes of the signature input if the input is
1101 larger than the prime q (with N being the size in bytes of q).
1104 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1105 it yet and it is largely untested.
1108 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1111 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1112 some compilers (gcc 4.2 and later) reject their use. Safestack is
1113 reimplemented. Update ASN1 to avoid use of legacy functions.
1116 *) Win32/64 targets are linked with Winsock2.
1119 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1120 to external functions. This can be used to increase CRL handling
1121 efficiency especially when CRLs are very large by (for example) storing
1122 the CRL revoked certificates in a database.
1125 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1126 new CRLs added to a directory can be used. New command line option
1127 -verify_return_error to s_client and s_server. This causes real errors
1128 to be returned by the verify callback instead of carrying on no matter
1129 what. This reflects the way a "real world" verify callback would behave.
1132 *) GOST engine, supporting several GOST algorithms and public key formats.
1133 Kindly donated by Cryptocom.
1136 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1137 partitioned by DP are handled but no indirect CRL or reason partitioning
1138 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1139 selected via a scoring technique which handles IDP and AKID in CRLs.
1142 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1143 will ultimately be used for all verify operations: this will remove the
1144 X509_STORE dependency on certificate verification and allow alternative
1145 lookup methods. X509_STORE based implementations of these two callbacks.
1148 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1149 Modify get_crl() to find a valid (unexpired) CRL if possible.
1152 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1153 this would be called X509_CRL_cmp() but that name is already used by
1154 a function that just compares CRL issuer names. Cache several CRL
1155 extensions in X509_CRL structure and cache CRLDP in X509.
1158 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1159 this maps equivalent X509_NAME structures into a consistent structure.
1160 Name comparison can then be performed rapidly using memcmp().
1163 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1167 *) Allow digests to supply their own micalg string for S/MIME type using
1168 the ctrl EVP_MD_CTRL_MICALG.
1171 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1172 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1173 ctrl. It can then customise the structure before and/or after signing
1177 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1178 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1179 to free up any added signature OIDs.
1182 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1183 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1184 digest and cipher tables. New options added to openssl utility:
1185 list-message-digest-algorithms and list-cipher-algorithms.
1188 *) Change the array representation of binary polynomials: the list
1189 of degrees of non-zero coefficients is now terminated with -1.
1190 Previously it was terminated with 0, which was also part of the
1191 value; thus, the array representation was not applicable to
1192 polynomials where t^0 has coefficient zero. This change makes
1193 the array representation useful in a more general context.
1196 *) Various modifications and fixes to SSL/TLS cipher string
1197 handling. For ECC, the code now distinguishes between fixed ECDH
1198 with RSA certificates on the one hand and with ECDSA certificates
1199 on the other hand, since these are separate ciphersuites. The
1200 unused code for Fortezza ciphersuites has been removed.
1202 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1203 (not "ECDHE"). For consistency with the code for DH
1204 certificates, use of ECDH certificates is now considered ECDH
1205 authentication, not RSA or ECDSA authentication (the latter is
1206 merely the CA's signing algorithm and not actively used in the
1209 The temporary ciphersuite alias "ECCdraft" is no longer
1210 available, and ECC ciphersuites are no longer excluded from "ALL"
1211 and "DEFAULT". The following aliases now exist for RFC 4492
1212 ciphersuites, most of these by analogy with the DH case:
1214 kECDHr - ECDH cert, signed with RSA
1215 kECDHe - ECDH cert, signed with ECDSA
1216 kECDH - ECDH cert (signed with either RSA or ECDSA)
1217 kEECDH - ephemeral ECDH
1218 ECDH - ECDH cert or ephemeral ECDH
1224 AECDH - anonymous ECDH
1225 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1229 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1230 Use correct micalg parameters depending on digest(s) in signed message.
1233 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1234 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1237 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1238 an engine to register a method. Add ENGINE lookups for methods and
1239 functional reference processing.
1242 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1243 EVP_{Sign,Verify}* which allow an application to customise the signature
1247 *) New -resign option to smime utility. This adds one or more signers
1248 to an existing PKCS#7 signedData structure. Also -md option to use an
1249 alternative message digest algorithm for signing.
1252 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1253 create PKCS7 structures containing multiple signers. Update smime
1254 application to support multiple signers.
1257 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1261 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1262 Reorganize PBE internals to lookup from a static table using NIDs,
1263 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1264 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1265 PRF which will be automatically used with PBES2.
1268 *) Replace the algorithm specific calls to generate keys in "req" with the
1272 *) Update PKCS#7 enveloped data routines to use new API. This is now
1273 supported by any public key method supporting the encrypt operation. A
1274 ctrl is added to allow the public key algorithm to examine or modify
1275 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1279 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1280 a default digest type to use. In most cases this will be SHA1 but some
1281 algorithms (such as GOST) need to specify an alternative digest. The
1282 return value indicates how strong the prefernce is 1 means optional and
1283 2 is mandatory (that is it is the only supported type). Modify
1284 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1285 use the default md. Update openssl utilities to use the default digest
1286 type for signing if it is not explicitly indicated.
1289 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1290 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1291 signing method from the key type. This effectively removes the link
1292 between digests and public key types.
1295 *) Add an OID cross reference table and utility functions. Its purpose is to
1296 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1297 rsaEncryption. This will allow some of the algorithm specific hackery
1298 needed to use the correct OID to be removed.
1301 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1302 structures for PKCS7_sign(). They are now set up by the relevant public
1306 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1309 *) Add support for key derivation (agreement) in the API, DH method and
1313 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1314 public and private key formats. As a side effect these add additional
1315 command line functionality not previously available: DSA signatures can be
1316 generated and verified using pkeyutl and DH key support and generation in
1321 [Oliver Tappe <zooey@hirschkaefer.de>]
1323 *) New make target "install_html_docs" installs HTML renditions of the
1325 [Oliver Tappe <zooey@hirschkaefer.de>]
1327 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1328 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1329 support key and parameter generation and add initial key generation
1330 functionality for RSA.
1333 *) Add functions for main EVP_PKEY_method operations. The undocumented
1334 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1335 EVP_PKEY_{encrypt,decrypt}_old.
1338 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1339 key API, doesn't do much yet.
1342 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1343 public key algorithms. New option to openssl utility:
1344 "list-public-key-algorithms" to print out info.
1347 *) Implement the Supported Elliptic Curves Extension for
1348 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1351 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1352 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1355 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1356 utilities such as rsa, dsa, dsaparam etc except they process any key
1360 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1361 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1362 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1366 *) Initial support for pluggable public key ASN1.
1367 De-spaghettify the public key ASN1 handling. Move public and private
1368 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1369 algorithm specific handling to a single module within the relevant
1370 algorithm directory. Add functions to allow (near) opaque processing
1371 of public and private key structures.
1374 *) Implement the Supported Point Formats Extension for
1375 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1378 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1379 for the psk identity [hint] and the psk callback functions to the
1380 SSL_SESSION, SSL and SSL_CTX structure.
1383 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1387 SSL_CTX_use_psk_identity_hint
1388 SSL_get_psk_identity_hint
1389 SSL_get_psk_identity
1390 SSL_use_psk_identity_hint
1392 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1394 *) Add RFC 3161 compliant time stamp request creation, response generation
1395 and response verification functionality.
1396 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1398 *) Add initial support for TLS extensions, specifically for the server_name
1399 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1400 have new members for a host name. The SSL data structure has an
1401 additional member SSL_CTX *initial_ctx so that new sessions can be
1402 stored in that context to allow for session resumption, even after the
1403 SSL has been switched to a new SSL_CTX in reaction to a client's
1404 server_name extension.
1406 New functions (subject to change):
1408 SSL_get_servername()
1409 SSL_get_servername_type()
1412 New CTRL codes and macros (subject to change):
1414 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1415 - SSL_CTX_set_tlsext_servername_callback()
1416 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1417 - SSL_CTX_set_tlsext_servername_arg()
1418 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1420 openssl s_client has a new '-servername ...' option.
1422 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1423 '-key2 ...', '-servername_fatal' (subject to change). This allows
1424 testing the HostName extension for a specific single host name ('-cert'
1425 and '-key' remain fallbacks for handshakes without HostName
1426 negotiation). If the unrecogninzed_name alert has to be sent, this by
1427 default is a warning; it becomes fatal with the '-servername_fatal'
1430 [Peter Sylvester, Remy Allais, Christophe Renou]
1432 *) Whirlpool hash implementation is added.
1435 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1436 bn(64,32). Because of instruction set limitations it doesn't have
1437 any negative impact on performance. This was done mostly in order
1438 to make it possible to share assembler modules, such as bn_mul_mont
1439 implementations, between 32- and 64-bit builds without hassle.
1442 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1443 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1447 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1448 dedicated Montgomery multiplication procedure, is introduced.
1449 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1450 "64-bit" performance on certain 32-bit targets.
1453 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1454 in SSL structures. New SSL ctrl to set maximum send fragment size.
1455 Save memory by seeting the I/O buffer sizes dynamically instead of
1456 using the maximum available value.
1459 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1460 in addition to the text details.
1463 *) Very, very preliminary EXPERIMENTAL support for printing of general
1464 ASN1 structures. This currently produces rather ugly output and doesn't
1465 handle several customised structures at all.
1468 *) Integrated support for PVK file format and some related formats such
1469 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1470 these in the 'rsa' and 'dsa' utilities.
1473 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1476 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1477 place for the (very old) "NETSCAPE" format certificates which are now
1478 handled using new ASN1 code equivalents.
1481 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1482 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1483 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1486 *) Modify CRL distribution points extension code to print out previously
1487 unsupported fields. Enhance extension setting code to allow setting of
1491 *) Add print and set support for Issuing Distribution Point CRL extension.
1494 *) Change 'Configure' script to enable Camellia by default.
1497 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
1499 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1500 Thanks to Antonio Martin, Enterprise Secure Access Research and
1501 Development, Cisco Systems, Inc. for discovering this bug and
1502 preparing a fix. (CVE-2012-0050)
1505 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1507 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1508 of the Vaudenay padding oracle attack on CBC mode encryption
1509 which enables an efficient plaintext recovery attack against
1510 the OpenSSL implementation of DTLS. Their attack exploits timing
1511 differences arising during decryption processing. A research
1512 paper describing this attack can be found at:
1513 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1514 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1515 Security Group at Royal Holloway, University of London
1516 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1517 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1518 for preparing the fix. (CVE-2011-4108)
1519 [Robin Seggelmann, Michael Tuexen]
1521 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1522 [Ben Laurie, Kasper <ekasper@google.com>]
1524 *) Clear bytes used for block padding of SSL 3.0 records.
1526 [Adam Langley (Google)]
1528 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1529 Kadianakis <desnacked@gmail.com> for discovering this issue and
1530 Adam Langley for preparing the fix. (CVE-2011-4619)
1531 [Adam Langley (Google)]
1533 *) Prevent malformed RFC3779 data triggering an assertion failure.
1534 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1535 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1536 [Rob Austein <sra@hactrn.net>]
1538 *) Fix ssl_ciph.c set-up race.
1539 [Adam Langley (Google)]
1541 *) Fix spurious failures in ecdsatest.c.
1542 [Emilia Käsper (Google)]
1544 *) Fix the BIO_f_buffer() implementation (which was mixing different
1545 interpretations of the '..._len' fields).
1546 [Adam Langley (Google)]
1548 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1549 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1550 threads won't reuse the same blinding coefficients.
1552 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1553 lock to call BN_BLINDING_invert_ex, and avoids one use of
1554 BN_BLINDING_update for each BN_BLINDING structure (previously,
1555 the last update always remained unused).
1556 [Emilia Käsper (Google)]
1558 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1559 for multi-threaded use of ECDH.
1560 [Adam Langley (Google)]
1562 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1565 *) Add protection against ECDSA timing attacks as mentioned in the paper
1566 by Billy Bob Brumley and Nicola Tuveri, see:
1568 http://eprint.iacr.org/2011/232.pdf
1570 [Billy Bob Brumley and Nicola Tuveri]
1572 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1574 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1575 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1577 *) Fix bug in string printing code: if *any* escaping is enabled we must
1578 escape the escape character (backslash) or the resulting string is
1582 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1584 *) Disable code workaround for ancient and obsolete Netscape browsers
1585 and servers: an attacker can use it in a ciphersuite downgrade attack.
1586 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1589 *) Fixed J-PAKE implementation error, originally discovered by
1590 Sebastien Martini, further info and confirmation from Stefan
1591 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1594 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1596 *) Fix extension code to avoid race conditions which can result in a buffer
1597 overrun vulnerability: resumed sessions must not be modified as they can
1598 be shared by multiple threads. CVE-2010-3864
1601 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1604 *) Don't reencode certificate when calculating signature: cache and use
1605 the original encoding instead. This makes signature verification of
1606 some broken encodings work correctly.
1609 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1610 is also one of the inputs.
1611 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1613 *) Don't repeatedly append PBE algorithms to table if they already exist.
1614 Sort table on each new add. This effectively makes the table read only
1615 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1619 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1621 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1624 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1625 access or freeing data twice (CVE-2010-0742)
1626 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1628 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1629 common in certificates and some applications which only call
1630 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1634 Reduce copying into .apps and .test in makevms.com
1635 Don't try to use blank CA certificate in CA.com
1636 Allow use of C files from original directories in maketests.com
1637 [Steven M. Schweda" <sms@antinode.info>]
1639 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1641 *) When rejecting SSL/TLS records due to an incorrect version number, never
1642 update s->server with a new major version number. As of
1643 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1644 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1645 the previous behavior could result in a read attempt at NULL when
1646 receiving specific incorrect SSL/TLS records once record payload
1647 protection is active. (CVE-2010-0740)
1648 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1650 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1651 could be crashed if the relevant tables were not present (e.g. chrooted).
1652 [Tomas Hoger <thoger@redhat.com>]
1654 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1656 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1657 [Martin Olsson, Neel Mehta]
1659 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1660 accommodate for stack sorting, always a write lock!).
1663 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1664 excessive delays in the RAND_poll(): over a minute. As a workaround
1665 include a time check in the inner Heap32Next loop too.
1668 *) The code that handled flushing of data in SSL/TLS originally used the
1669 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1670 the problem outlined in PR#1949. The fix suggested there however can
1671 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1672 of Apache). So instead simplify the code to flush unconditionally.
1673 This should be fine since flushing with no data to flush is a no op.
1676 *) Handle TLS versions 2.0 and later properly and correctly use the
1677 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1678 off ancient servers have a habit of sticking around for a while...
1681 *) Modify compression code so it frees up structures without using the
1682 ex_data callbacks. This works around a problem where some applications
1683 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1684 restarting) then use compression (e.g. SSL with compression) later.
1685 This results in significant per-connection memory leaks and
1686 has caused some security issues including CVE-2008-1678 and
1690 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1691 change when encrypting or decrypting.
1694 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1695 connect and renegotiate with servers which do not support RI.
1696 Until RI is more widely deployed this option is enabled by default.
1699 *) Add "missing" ssl ctrls to clear options and mode.
1702 *) If client attempts to renegotiate and doesn't support RI respond with
1703 a no_renegotiation alert as required by RFC5746. Some renegotiating
1704 TLS clients will continue a connection gracefully when they receive
1705 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1706 waiting for a server hello which it will never receive. Now we treat a
1707 received no_renegotiation alert as a fatal error. This is because
1708 applications requesting a renegotiation might well expect it to succeed
1709 and would have no code in place to handle the server denying it so the
1710 only safe thing to do is to terminate the connection.
1713 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1714 peer supports secure renegotiation and 0 otherwise. Print out peer
1715 renegotiation support in s_client/s_server.
1718 *) Replace the highly broken and deprecated SPKAC certification method with
1719 the updated NID creation version. This should correctly handle UTF8.
1722 *) Implement RFC5746. Re-enable renegotiation but require the extension
1723 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1724 turns out to be a bad idea. It has been replaced by
1725 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1726 SSL_CTX_set_options(). This is really not recommended unless you
1727 know what you are doing.
1728 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1730 *) Fixes to stateless session resumption handling. Use initial_ctx when
1731 issuing and attempting to decrypt tickets in case it has changed during
1732 servername handling. Use a non-zero length session ID when attempting
1733 stateless session resumption: this makes it possible to determine if
1734 a resumption has occurred immediately after receiving server hello
1735 (several places in OpenSSL subtly assume this) instead of later in
1739 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1740 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1741 fixes for a few places where the return code is not checked
1743 [Julia Lawall <julia@diku.dk>]
1745 *) Add --strict-warnings option to Configure script to include devteam
1746 warnings in other configurations.
1749 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1750 makes it possible to install openssl libraries in locations which
1751 have names other than "lib", for example "/usr/lib64" which some
1753 [Steve Henson, based on patch from Jeremy Utley]
1755 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1756 X690 8.9.12 and can produce some misleading textual output of OIDs.
1757 [Steve Henson, reported by Dan Kaminsky]
1759 *) Delete MD2 from algorithm tables. This follows the recommendation in
1760 several standards that it is not used in new applications due to
1761 several cryptographic weaknesses. For binary compatibility reasons
1762 the MD2 API is still compiled in by default.
1765 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1769 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1770 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1772 [Guenter <lists@gknw.net>]
1774 *) Fix the server certificate chain building code to use X509_verify_cert(),
1775 it used to have an ad-hoc builder which was unable to cope with anything
1776 other than a simple chain.
1777 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1779 *) Don't check self signed certificate signatures in X509_verify_cert()
1780 by default (a flag can override this): it just wastes time without
1781 adding any security. As a useful side effect self signed root CAs
1782 with non-FIPS digests are now usable in FIPS mode.
1785 *) In dtls1_process_out_of_seq_message() the check if the current message
1786 is already buffered was missing. For every new message was memory
1787 allocated, allowing an attacker to perform an denial of service attack
1788 with sending out of seq handshake messages until there is no memory
1789 left. Additionally every future messege was buffered, even if the
1790 sequence number made no sense and would be part of another handshake.
1791 So only messages with sequence numbers less than 10 in advance will be
1792 buffered. (CVE-2009-1378)
1793 [Robin Seggelmann, discovered by Daniel Mentz]
1795 *) Records are buffered if they arrive with a future epoch to be
1796 processed after finishing the corresponding handshake. There is
1797 currently no limitation to this buffer allowing an attacker to perform
1798 a DOS attack with sending records with future epochs until there is no
1799 memory left. This patch adds the pqueue_size() function to detemine
1800 the size of a buffer and limits the record buffer to 100 entries.
1802 [Robin Seggelmann, discovered by Daniel Mentz]
1804 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1805 parent structure is freed. (CVE-2009-1379)
1808 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1809 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1812 [Ilya O. <vrghost@gmail.com>]
1814 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1816 *) Disable renegotiation completely - this fixes a severe security
1817 problem (CVE-2009-3555) at the cost of breaking all
1818 renegotiation. Renegotiation can be re-enabled by setting
1819 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1820 run-time. This is really not recommended unless you know what
1824 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1826 *) Don't set val to NULL when freeing up structures, it is freed up by
1827 underlying code. If sizeof(void *) > sizeof(long) this can result in
1828 zeroing past the valid field. (CVE-2009-0789)
1829 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1831 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1832 checked correctly. This would allow some invalid signed attributes to
1833 appear to verify correctly. (CVE-2009-0591)
1834 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1836 *) Reject UniversalString and BMPString types with invalid lengths. This
1837 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1838 a legal length. (CVE-2009-0590)
1841 *) Set S/MIME signing as the default purpose rather than setting it
1842 unconditionally. This allows applications to override it at the store
1846 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1847 to handle some structures.
1850 *) Improve efficiency of mem_gets: don't search whole buffer each time
1852 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1854 *) New -hex option for openssl rand.
1857 *) Print out UTF8String and NumericString when parsing ASN1.
1860 *) Support NumericString type for name components.
1863 *) Allow CC in the environment to override the automatically chosen
1864 compiler. Note that nothing is done to ensure flags work with the
1868 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1870 *) Properly check EVP_VerifyFinal() and similar return values
1872 [Ben Laurie, Bodo Moeller, Google Security Team]
1874 *) Enable TLS extensions by default.
1877 *) Allow the CHIL engine to be loaded, whether the application is
1878 multithreaded or not. (This does not release the developer from the
1879 obligation to set up the dynamic locking callbacks.)
1880 [Sander Temme <sander@temme.net>]
1882 *) Use correct exit code if there is an error in dgst command.
1883 [Steve Henson; problem pointed out by Roland Dirlewanger]
1885 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1886 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1889 *) Add experimental JPAKE support, including demo authentication in
1890 s_client and s_server.
1893 *) Set the comparison function in v3_addr_canonize().
1894 [Rob Austein <sra@hactrn.net>]
1896 *) Add support for XMPP STARTTLS in s_client.
1897 [Philip Paeps <philip@freebsd.org>]
1899 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1900 to ensure that even with this option, only ciphersuites in the
1901 server's preference list will be accepted. (Note that the option
1902 applies only when resuming a session, so the earlier behavior was
1903 just about the algorithm choice for symmetric cryptography.)
1906 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1908 *) Fix NULL pointer dereference if a DTLS server received
1909 ChangeCipherSpec as first record (CVE-2009-1386).
1912 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1913 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1916 *) The fix in 0.9.8c that supposedly got rid of unsafe
1917 double-checked locking was incomplete for RSA blinding,
1918 addressing just one layer of what turns out to have been
1919 doubly unsafe triple-checked locking.
1921 So now fix this for real by retiring the MONT_HELPER macro
1922 in crypto/rsa/rsa_eay.c.
1924 [Bodo Moeller; problem pointed out by Marius Schilder]
1926 *) Various precautionary measures:
1928 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1930 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1931 (NB: This would require knowledge of the secret session ticket key
1932 to exploit, in which case you'd be SOL either way.)
1934 - Change bn_nist.c so that it will properly handle input BIGNUMs
1935 outside the expected range.
1937 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1940 [Neel Mehta, Bodo Moeller]
1942 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1943 the load fails. Useful for distros.
1944 [Ben Laurie and the FreeBSD team]
1946 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1949 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1952 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1954 This work was sponsored by Logica.
1957 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1958 keystores. Support for SSL/TLS client authentication too.
1959 Not compiled unless enable-capieng specified to Configure.
1961 This work was sponsored by Logica.
1964 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1965 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1966 attribute creation routines such as certifcate requests and PKCS#12
1970 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1972 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1973 handshake which could lead to a cilent crash as found using the
1974 Codenomicon TLS test suite (CVE-2008-1672)
1975 [Steve Henson, Mark Cox]
1977 *) Fix double free in TLS server name extensions which could lead to
1978 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1981 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1983 Clear the error queue to ensure that error entries left from
1984 older function calls do not interfere with the correct operation.
1985 [Lutz Jaenicke, Erik de Castro Lopo]
1987 *) Remove root CA certificates of commercial CAs:
1989 The OpenSSL project does not recommend any specific CA and does not
1990 have any policy with respect to including or excluding any CA.
1991 Therefore it does not make any sense to ship an arbitrary selection
1992 of root CA certificates with the OpenSSL software.
1995 *) RSA OAEP patches to fix two separate invalid memory reads.
1996 The first one involves inputs when 'lzero' is greater than
1997 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1998 before the beginning of from). The second one involves inputs where
1999 the 'db' section contains nothing but zeroes (there is a one-byte
2000 invalid read after the end of 'db').
2001 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2003 *) Partial backport from 0.9.9-dev:
2005 Introduce bn_mul_mont (dedicated Montgomery multiplication
2006 procedure) as a candidate for BIGNUM assembler implementation.
2007 While 0.9.9-dev uses assembler for various architectures, only
2008 x86_64 is available by default here in the 0.9.8 branch, and
2009 32-bit x86 is available through a compile-time setting.
2011 To try the 32-bit x86 assembler implementation, use Configure
2012 option "enable-montasm" (which exists only for this backport).
2014 As "enable-montasm" for 32-bit x86 disclaims code stability
2015 anyway, in this constellation we activate additional code
2016 backported from 0.9.9-dev for further performance improvements,
2017 namely BN_from_montgomery_word. (To enable this otherwise,
2018 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2020 [Andy Polyakov (backport partially by Bodo Moeller)]
2022 *) Add TLS session ticket callback. This allows an application to set
2023 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2024 values. This is useful for key rollover for example where several key
2025 sets may exist with different names.
2028 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2029 This was broken until now in 0.9.8 releases, such that the only way
2030 a registered ENGINE could be used (assuming it initialises
2031 successfully on the host) was to explicitly set it as the default
2032 for the relevant algorithms. This is in contradiction with 0.9.7
2033 behaviour and the documentation. With this fix, when an ENGINE is
2034 registered into a given algorithm's table of implementations, the
2035 'uptodate' flag is reset so that auto-discovery will be used next
2036 time a new context for that algorithm attempts to select an
2038 [Ian Lister (tweaked by Geoff Thorpe)]
2040 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2041 implemention in the following ways:
2043 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2046 Lack of BER streaming support means one pass streaming processing is
2047 only supported if data is detached: setting the streaming flag is
2048 ignored for embedded content.
2050 CMS support is disabled by default and must be explicitly enabled
2051 with the enable-cms configuration option.
2054 *) Update the GMP engine glue to do direct copies between BIGNUM and
2055 mpz_t when openssl and GMP use the same limb size. Otherwise the
2056 existing "conversion via a text string export" trick is still used.
2057 [Paul Sheer <paulsheer@gmail.com>]
2059 *) Zlib compression BIO. This is a filter BIO which compressed and
2060 uncompresses any data passed through it.
2063 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2064 RFC3394 compatible AES key wrapping.
2067 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2068 sets string data without copying. X509_ALGOR_set0() and
2069 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2070 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2071 from an X509_ATTRIBUTE structure optionally checking it occurs only
2072 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2076 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2077 to get the expected BN_FLG_CONSTTIME behavior.
2078 [Bodo Moeller (Google)]
2082 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2083 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2084 - added some more tests to do_tests.pl
2085 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2086 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2087 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2088 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2089 - various changes to netware.pl to enable gcc-cross builds on Win32
2091 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2092 - various changes to fix missing prototype warnings
2093 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2094 - added AES, WHIRLPOOL and CPUID assembler code to build files
2095 - added missing AES assembler make rules to mk1mf.pl
2096 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2097 [Guenter Knauf <eflash@gmx.net>]
2099 *) Implement certificate status request TLS extension defined in RFC3546.
2100 A client can set the appropriate parameters and receive the encoded
2101 OCSP response via a callback. A server can query the supplied parameters
2102 and set the encoded OCSP response in the callback. Add simplified examples
2103 to s_client and s_server.
2106 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2108 *) Fix various bugs:
2109 + Binary incompatibility of ssl_ctx_st structure
2110 + DTLS interoperation with non-compliant servers
2111 + Don't call get_session_cb() without proposed session
2112 + Fix ia64 assembler code
2113 [Andy Polyakov, Steve Henson]
2115 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2117 *) DTLS Handshake overhaul. There were longstanding issues with
2118 OpenSSL DTLS implementation, which were making it impossible for
2119 RFC 4347 compliant client to communicate with OpenSSL server.
2120 Unfortunately just fixing these incompatibilities would "cut off"
2121 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2122 server keeps tolerating non RFC compliant syntax. The opposite is
2123 not true, 0.9.8f client can not communicate with earlier server.
2124 This update even addresses CVE-2007-4995.
2127 *) Changes to avoid need for function casts in OpenSSL: some compilers
2128 (gcc 4.2 and later) reject their use.
2129 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2132 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2133 RFC4507bis. The encrypted ticket format is an encrypted encoded
2134 SSL_SESSION structure, that way new session features are automatically
2137 If a client application caches session in an SSL_SESSION structure
2138 support is transparent because tickets are now stored in the encoded
2141 The SSL_CTX structure automatically generates keys for ticket
2142 protection in servers so again support should be possible
2143 with no application modification.
2145 If a client or server wishes to disable RFC4507 support then the option
2146 SSL_OP_NO_TICKET can be set.
2148 Add a TLS extension debugging callback to allow the contents of any client
2149 or server extensions to be examined.
2151 This work was sponsored by Google.
2154 *) Add initial support for TLS extensions, specifically for the server_name
2155 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2156 have new members for a host name. The SSL data structure has an
2157 additional member SSL_CTX *initial_ctx so that new sessions can be
2158 stored in that context to allow for session resumption, even after the
2159 SSL has been switched to a new SSL_CTX in reaction to a client's
2160 server_name extension.
2162 New functions (subject to change):
2164 SSL_get_servername()
2165 SSL_get_servername_type()
2168 New CTRL codes and macros (subject to change):
2170 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2171 - SSL_CTX_set_tlsext_servername_callback()
2172 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2173 - SSL_CTX_set_tlsext_servername_arg()
2174 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2176 openssl s_client has a new '-servername ...' option.
2178 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2179 '-key2 ...', '-servername_fatal' (subject to change). This allows
2180 testing the HostName extension for a specific single host name ('-cert'
2181 and '-key' remain fallbacks for handshakes without HostName
2182 negotiation). If the unrecogninzed_name alert has to be sent, this by
2183 default is a warning; it becomes fatal with the '-servername_fatal'
2186 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2188 *) Add AES and SSE2 assembly language support to VC++ build.
2191 *) Mitigate attack on final subtraction in Montgomery reduction.
2194 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2195 (which previously caused an internal error).
2198 *) Squeeze another 10% out of IGE mode when in != out.
2201 *) AES IGE mode speedup.
2202 [Dean Gaudet (Google)]
2204 *) Add the Korean symmetric 128-bit cipher SEED (see
2205 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2206 add SEED ciphersuites from RFC 4162:
2208 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2209 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2210 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2211 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2213 To minimize changes between patchlevels in the OpenSSL 0.9.8
2214 series, SEED remains excluded from compilation unless OpenSSL
2215 is configured with 'enable-seed'.
2216 [KISA, Bodo Moeller]
2218 *) Mitigate branch prediction attacks, which can be practical if a
2219 single processor is shared, allowing a spy process to extract
2220 information. For detailed background information, see
2221 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2222 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2223 and Necessary Software Countermeasures"). The core of the change
2224 are new versions BN_div_no_branch() and
2225 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2226 respectively, which are slower, but avoid the security-relevant
2227 conditional branches. These are automatically called by BN_div()
2228 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2229 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2230 remove a conditional branch.
2232 BN_FLG_CONSTTIME is the new name for the previous
2233 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2234 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2235 in the exponent causes BN_mod_exp_mont() to use the alternative
2236 implementation in BN_mod_exp_mont_consttime().) The old name
2237 remains as a deprecated alias.
2239 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2240 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2241 constant-time implementations for more than just exponentiation.
2242 Here too the old name is kept as a deprecated alias.
2244 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2245 the BN_BLINDING structure gets an independent copy of the
2246 modulus. This means that the previous "BIGNUM *m" argument to
2247 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2248 essentially becomes "const BIGNUM *m", although we can't actually
2249 change this in the header file before 0.9.9. It allows
2250 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2251 enable BN_FLG_CONSTTIME.
2253 [Matthew D Wood (Intel Corp)]
2255 *) In the SSL/TLS server implementation, be strict about session ID
2256 context matching (which matters if an application uses a single
2257 external cache for different purposes). Previously,
2258 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2259 set. This did ensure strict client verification, but meant that,
2260 with applications using a single external cache for quite
2261 different requirements, clients could circumvent ciphersuite
2262 restrictions for a given session ID context by starting a session
2263 in a different context.
2266 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2267 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2268 authentication-only ciphersuites.
2271 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2272 not complete and could lead to a possible single byte overflow
2273 (CVE-2007-5135) [Ben Laurie]
2275 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2277 *) Since AES128 and AES256 (and similarly Camellia128 and
2278 Camellia256) share a single mask bit in the logic of
2279 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2280 kludge to work properly if AES128 is available and AES256 isn't
2281 (or if Camellia128 is available and Camellia256 isn't).
2284 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2285 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2286 When a point or a seed is encoded in a BIT STRING, we need to
2287 prevent the removal of trailing zero bits to get the proper DER
2288 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2289 of a NamedBitList, for which trailing 0 bits need to be removed.)
2292 *) Have SSL/TLS server implementation tolerate "mismatched" record
2293 protocol version while receiving ClientHello even if the
2294 ClientHello is fragmented. (The server can't insist on the
2295 particular protocol version it has chosen before the ServerHello
2296 message has informed the client about his choice.)
2299 *) Add RFC 3779 support.
2300 [Rob Austein for ARIN, Ben Laurie]
2302 *) Load error codes if they are not already present instead of using a
2303 static variable. This allows them to be cleanly unloaded and reloaded.
2304 Improve header file function name parsing.
2307 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2308 or CAPABILITY handshake as required by RFCs.
2311 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2313 *) Introduce limits to prevent malicious keys being able to
2314 cause a denial of service. (CVE-2006-2940)
2315 [Steve Henson, Bodo Moeller]
2317 *) Fix ASN.1 parsing of certain invalid structures that can result
2318 in a denial of service. (CVE-2006-2937) [Steve Henson]
2320 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2321 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2323 *) Fix SSL client code which could crash if connecting to a
2324 malicious SSLv2 server. (CVE-2006-4343)
2325 [Tavis Ormandy and Will Drewry, Google Security Team]
2327 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2328 match only those. Before that, "AES256-SHA" would be interpreted
2329 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2330 the same strength classification in 0.9.7h) as we currently only
2331 have a single AES bit in the ciphersuite description bitmap.
2332 That change, however, also applied to ciphersuite strings such as
2333 "RC4-MD5" that intentionally matched multiple ciphersuites --
2334 namely, SSL 2.0 ciphersuites in addition to the more common ones
2335 from SSL 3.0/TLS 1.0.
2337 So we change the selection algorithm again: Naming an explicit
2338 ciphersuite selects this one ciphersuite, and any other similar
2339 ciphersuite (same bitmap) from *other* protocol versions.
2340 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2341 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2343 Since SSL 2.0 does not have any ciphersuites for which the
2344 128/256 bit distinction would be relevant, this works for now.
2345 The proper fix will be to use different bits for AES128 and
2346 AES256, which would have avoided the problems from the beginning;
2347 however, bits are scarce, so we can only do this in a new release
2348 (not just a patchlevel) when we can change the SSL_CIPHER
2349 definition to split the single 'unsigned long mask' bitmap into
2350 multiple values to extend the available space.
2354 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2356 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2357 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2359 *) Add AES IGE and biIGE modes.
2362 *) Change the Unix randomness entropy gathering to use poll() when
2363 possible instead of select(), since the latter has some
2364 undesirable limitations.
2365 [Darryl Miles via Richard Levitte and Bodo Moeller]
2367 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2368 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2369 cannot be implicitly activated as part of, e.g., the "AES" alias.
2370 However, please upgrade to OpenSSL 0.9.9[-dev] for
2371 non-experimental use of the ECC ciphersuites to get TLS extension
2372 support, which is required for curve and point format negotiation
2373 to avoid potential handshake problems.
2376 *) Disable rogue ciphersuites:
2378 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2379 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2380 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2382 The latter two were purportedly from
2383 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2386 Also deactivate the remaining ciphersuites from
2387 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2388 unofficial, and the ID has long expired.
2391 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2392 dual-core machines) and other potential thread-safety issues.
2395 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2396 versions), which is now available for royalty-free use
2397 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2398 Also, add Camellia TLS ciphersuites from RFC 4132.
2400 To minimize changes between patchlevels in the OpenSSL 0.9.8
2401 series, Camellia remains excluded from compilation unless OpenSSL
2402 is configured with 'enable-camellia'.
2405 *) Disable the padding bug check when compression is in use. The padding
2406 bug check assumes the first packet is of even length, this is not
2407 necessarily true if compresssion is enabled and can result in false
2408 positives causing handshake failure. The actual bug test is ancient
2409 code so it is hoped that implementations will either have fixed it by
2410 now or any which still have the bug do not support compression.
2413 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2415 *) When applying a cipher rule check to see if string match is an explicit
2416 cipher suite and only match that one cipher suite if it is.
2419 *) Link in manifests for VC++ if needed.
2420 [Austin Ziegler <halostatue@gmail.com>]
2422 *) Update support for ECC-based TLS ciphersuites according to
2423 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2424 TLS extensions, which are supported starting with the 0.9.9
2425 branch, not in the OpenSSL 0.9.8 branch).
2428 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2429 opaque EVP_CIPHER_CTX handling.
2432 *) Fixes and enhancements to zlib compression code. We now only use
2433 "zlib1.dll" and use the default __cdecl calling convention on Win32
2434 to conform with the standards mentioned here:
2435 http://www.zlib.net/DLL_FAQ.txt
2436 Static zlib linking now works on Windows and the new --with-zlib-include
2437 --with-zlib-lib options to Configure can be used to supply the location
2438 of the headers and library. Gracefully handle case where zlib library
2442 *) Several fixes and enhancements to the OID generation code. The old code
2443 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2444 handle numbers larger than ULONG_MAX, truncated printing and had a
2445 non standard OBJ_obj2txt() behaviour.
2448 *) Add support for building of engines under engine/ as shared libraries
2449 under VC++ build system.
2452 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2453 Hopefully, we will not see any false combination of paths any more.
2456 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2458 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2459 (part of SSL_OP_ALL). This option used to disable the
2460 countermeasure against man-in-the-middle protocol-version
2461 rollback in the SSL 2.0 server implementation, which is a bad
2462 idea. (CVE-2005-2969)
2464 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2465 for Information Security, National Institute of Advanced Industrial
2466 Science and Technology [AIST], Japan)]
2468 *) Add two function to clear and return the verify parameter flags.
2471 *) Keep cipherlists sorted in the source instead of sorting them at
2472 runtime, thus removing the need for a lock.
2475 *) Avoid some small subgroup attacks in Diffie-Hellman.
2476 [Nick Mathewson and Ben Laurie]
2478 *) Add functions for well-known primes.
2481 *) Extended Windows CE support.
2482 [Satoshi Nakamura and Andy Polyakov]
2484 *) Initialize SSL_METHOD structures at compile time instead of during
2485 runtime, thus removing the need for a lock.
2488 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2489 attempting to decrypt each encrypted key in turn. Add support to
2493 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2495 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2498 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2501 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2502 key into the same file any more.
2505 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2508 *) Add -utf8 command line and config file option to 'ca'.
2509 [Stefan <stf@udoma.org]
2511 *) Removed the macro des_crypt(), as it seems to conflict with some
2512 libraries. Use DES_crypt().
2515 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2516 involves renaming the source and generated shared-libs for
2517 both. The engines will accept the corrected or legacy ids
2518 ('ncipher' and '4758_cca' respectively) when binding. NB,
2519 this only applies when building 'shared'.
2520 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2522 *) Add attribute functions to EVP_PKEY structure. Modify
2523 PKCS12_create() to recognize a CSP name attribute and
2524 use it. Make -CSP option work again in pkcs12 utility.
2527 *) Add new functionality to the bn blinding code:
2528 - automatic re-creation of the BN_BLINDING parameters after
2529 a fixed number of uses (currently 32)
2530 - add new function for parameter creation
2531 - introduce flags to control the update behaviour of the
2532 BN_BLINDING parameters
2533 - hide BN_BLINDING structure
2534 Add a second BN_BLINDING slot to the RSA structure to improve
2535 performance when a single RSA object is shared among several
2539 *) Add support for DTLS.
2540 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2542 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2543 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2546 *) Remove buggy and incompletet DH cert support from
2547 ssl/ssl_rsa.c and ssl/s3_both.c
2550 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2551 the apps/openssl applications.
2554 *) Compile clean with "-Wall -Wmissing-prototypes
2555 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2556 DEBUG_SAFESTACK must also be set.
2559 *) Change ./Configure so that certain algorithms can be disabled by default.
2560 The new counterpiece to "no-xxx" is "enable-xxx".
2562 The patented RC5 and MDC2 algorithms will now be disabled unless
2563 "enable-rc5" and "enable-mdc2", respectively, are specified.
2565 (IDEA remains enabled despite being patented. This is because IDEA
2566 is frequently required for interoperability, and there is no license
2567 fee for non-commercial use. As before, "no-idea" can be used to
2568 avoid this algorithm.)
2572 *) Add processing of proxy certificates (see RFC 3820). This work was
2573 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2574 EGEE (Enabling Grids for E-science in Europe).
2577 *) RC4 performance overhaul on modern architectures/implementations, such
2578 as Intel P4, IA-64 and AMD64.
2581 *) New utility extract-section.pl. This can be used specify an alternative
2582 section number in a pod file instead of having to treat each file as
2583 a separate case in Makefile. This can be done by adding two lines to the
2586 =for comment openssl_section:XXX
2588 The blank line is mandatory.
2592 *) New arguments -certform, -keyform and -pass for s_client and s_server
2593 to allow alternative format key and certificate files and passphrase
2597 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2598 update associated structures and add various utility functions.
2600 Add new policy related verify parameters, include policy checking in
2601 standard verify code. Enhance 'smime' application with extra parameters
2602 to support policy checking and print out.
2605 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2606 Nehemiah processors. These extensions support AES encryption in hardware
2607 as well as RNG (though RNG support is currently disabled).
2608 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2610 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2613 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2614 [Andy Polyakov and a number of other people]
2616 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2617 implementation contributed by IBM.
2618 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2620 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2621 exponent rather than 'unsigned long'. There is a corresponding change to
2622 the new 'rsa_keygen' element of the RSA_METHOD structure.
2623 [Jelte Jansen, Geoff Thorpe]
2625 *) Functionality for creating the initial serial number file is now
2626 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2628 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2629 number file to 1, which is bound to cause problems. To avoid
2630 the problems while respecting compatibility between different 0.9.7
2631 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2632 CA.pl for serial number initialization. With the new release 0.9.8,
2633 we can fix the problem directly in the 'ca' utility.)
2636 *) Reduced header interdepencies by declaring more opaque objects in
2637 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2638 give fewer recursive includes, which could break lazy source code - so
2639 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2640 developers should define this symbol when building and using openssl to
2641 ensure they track the recommended behaviour, interfaces, [etc], but
2642 backwards-compatible behaviour prevails when this isn't defined.
2645 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2648 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2649 This will generate a random key of the appropriate length based on the
2650 cipher context. The EVP_CIPHER can provide its own random key generation
2651 routine to support keys of a specific form. This is used in the des and
2652 3des routines to generate a key of the correct parity. Update S/MIME
2653 code to use new functions and hence generate correct parity DES keys.
2654 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2655 valid (weak or incorrect parity).
2658 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2659 as looking them up. This is useful when the verified structure may contain
2660 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2661 present unless the new PKCS7_NO_CRL flag is asserted.
2664 *) Extend ASN1 oid configuration module. It now additionally accepts the
2667 shortName = some long name, 1.2.3.4
2670 *) Reimplemented the BN_CTX implementation. There is now no more static
2671 limitation on the number of variables it can handle nor the depth of the
2672 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2673 information can now expand as required, and rather than having a single
2674 static array of bignums, BN_CTX now uses a linked-list of such arrays
2675 allowing it to expand on demand whilst maintaining the usefulness of
2676 BN_CTX's "bundling".
2679 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2680 to allow all RSA operations to function using a single BN_CTX.
2683 *) Preliminary support for certificate policy evaluation and checking. This
2684 is initially intended to pass the tests outlined in "Conformance Testing
2685 of Relying Party Client Certificate Path Processing Logic" v1.07.
2688 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2689 remained unused and not that useful. A variety of other little bignum
2690 tweaks and fixes have also been made continuing on from the audit (see
2694 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2695 associated ASN1, EVP and SSL functions and old ASN1 macros.
2698 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2699 and this should never fail. So the return value from the use of
2700 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2701 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2704 *) BN_CTX_get() should return zero-valued bignums, providing the same
2705 initialised value as BN_new().
2706 [Geoff Thorpe, suggested by Ulf Möller]
2708 *) Support for inhibitAnyPolicy certificate extension.
2711 *) An audit of the BIGNUM code is underway, for which debugging code is
2712 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2713 is considered valid when processing BIGNUMs, and causes execution to
2714 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2715 further steps are taken to deliberately pollute unused data in BIGNUM
2716 structures to try and expose faulty code further on. For now, openssl will
2717 (in its default mode of operation) continue to tolerate the inconsistent
2718 forms that it has tolerated in the past, but authors and packagers should
2719 consider trying openssl and their own applications when compiled with
2720 these debugging symbols defined. It will help highlight potential bugs in
2721 their own code, and will improve the test coverage for OpenSSL itself. At
2722 some point, these tighter rules will become openssl's default to improve
2723 maintainability, though the assert()s and other overheads will remain only
2724 in debugging configurations. See bn.h for more details.
2725 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2727 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2728 that can only be obtained through BN_CTX_new() (which implicitly
2729 initialises it). The presence of this function only made it possible
2730 to overwrite an existing structure (and cause memory leaks).
2733 *) Because of the callback-based approach for implementing LHASH as a
2734 template type, lh_insert() adds opaque objects to hash-tables and
2735 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2736 to clean up those corresponding objects before destroying the hash table
2737 (and losing the object pointers). So some over-zealous constifications in
2738 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2739 objects as "const" and the lh_doall[_arg] callback wrappers are not
2740 prototyped to have "const" restrictions on the object pointers they are
2741 given (and so aren't required to cast them away any more).
2744 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2745 (speed) prefers to use its own implementation. The two implementations
2746 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2747 its object type properly exposed (MS_TM) instead of casting to/from "char
2748 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2749 aren't necessarily the greatest nomenclatures - but this is what was used
2750 internally to the implementation so I've used that for now.
2753 *) Ensure that deprecated functions do not get compiled when
2754 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2755 the self-tests were still using deprecated key-generation functions so
2756 these have been updated also.
2759 *) Reorganise PKCS#7 code to separate the digest location functionality
2760 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2761 New function PKCS7_set_digest() to set the digest type for PKCS#7
2762 digestedData type. Add additional code to correctly generate the
2763 digestedData type and add support for this type in PKCS7 initialization
2767 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2768 structure of type "other".
2771 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2772 sure the loop does correctly stop and breaking ("division by zero")
2773 modulus operations are not performed. The (pre-generated) prime
2774 table crypto/bn/bn_prime.h was already correct, but it could not be
2775 re-generated on some platforms because of the "division by zero"
2776 situation in the script.
2777 [Ralf S. Engelschall]
2779 *) Update support for ECC-based TLS ciphersuites according to
2780 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2781 SHA-1 now is only used for "small" curves (where the
2782 representation of a field element takes up to 24 bytes); for
2783 larger curves, the field element resulting from ECDH is directly
2784 used as premaster secret.
2785 [Douglas Stebila (Sun Microsystems Laboratories)]
2787 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2788 curve secp160r1 to the tests.
2789 [Douglas Stebila (Sun Microsystems Laboratories)]
2791 *) Add the possibility to load symbols globally with DSO.
2792 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2794 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2795 control of the error stack.
2798 *) Add support for STORE in ENGINE.
2801 *) Add the STORE type. The intention is to provide a common interface
2802 to certificate and key stores, be they simple file-based stores, or
2803 HSM-type store, or LDAP stores, or...
2804 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2807 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2808 pass a list of arguments to any function as well as provide a way
2809 for a function to pass data back to the caller.
2812 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2813 works like BUF_strdup() but can be used to duplicate a portion of
2814 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2818 *) Add the function sk_find_ex() which works like sk_find(), but will
2819 return an index to an element even if an exact match couldn't be
2820 found. The index is guaranteed to point at the element where the
2821 searched-for key would be inserted to preserve sorting order.
2824 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2825 takes an extra flags argument for optional functionality. Currently,
2826 the following flags are defined:
2828 OBJ_BSEARCH_VALUE_ON_NOMATCH
2829 This one gets OBJ_bsearch_ex() to return a pointer to the first
2830 element where the comparing function returns a negative or zero
2833 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2834 This one gets OBJ_bsearch_ex() to return a pointer to the first
2835 element where the comparing function returns zero. This is useful
2836 if there are more than one element where the comparing function
2840 *) Make it possible to create self-signed certificates with 'openssl ca'
2841 in such a way that the self-signed certificate becomes part of the
2842 CA database and uses the same mechanisms for serial number generation
2843 as all other certificate signing. The new flag '-selfsign' enables
2844 this functionality. Adapt CA.sh and CA.pl.in.
2847 *) Add functionality to check the public key of a certificate request
2848 against a given private. This is useful to check that a certificate
2849 request can be signed by that key (self-signing).
2852 *) Make it possible to have multiple active certificates with the same
2853 subject in the CA index file. This is done only if the keyword
2854 'unique_subject' is set to 'no' in the main CA section (default
2855 if 'CA_default') of the configuration file. The value is saved
2856 with the database itself in a separate index attribute file,
2857 named like the index file with '.attr' appended to the name.
2860 *) Generate muti valued AVAs using '+' notation in config files for
2864 *) Support for nameConstraints certificate extension.
2867 *) Support for policyConstraints certificate extension.
2870 *) Support for policyMappings certificate extension.
2873 *) Make sure the default DSA_METHOD implementation only uses its
2874 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2875 and change its own handlers to be NULL so as to remove unnecessary
2876 indirection. This lets alternative implementations fallback to the
2877 default implementation more easily.
2880 *) Support for directoryName in GeneralName related extensions
2884 *) Make it possible to link applications using Makefile.shared.
2885 Make that possible even when linking against static libraries!
2888 *) Support for single pass processing for S/MIME signing. This now
2889 means that S/MIME signing can be done from a pipe, in addition
2890 cleartext signing (multipart/signed type) is effectively streaming
2891 and the signed data does not need to be all held in memory.
2893 This is done with a new flag PKCS7_STREAM. When this flag is set
2894 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2895 is done after the data is output (and digests calculated) in
2896 SMIME_write_PKCS7().
2899 *) Add full support for -rpath/-R, both in shared libraries and
2900 applications, at least on the platforms where it's known how
2904 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2905 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2906 will now compute a table of multiples of the generator that
2907 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2908 faster (notably in the case of a single point multiplication,
2909 scalar * generator).
2910 [Nils Larsch, Bodo Moeller]
2912 *) IPv6 support for certificate extensions. The various extensions
2913 which use the IP:a.b.c.d can now take IPv6 addresses using the
2914 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2918 *) Added an ENGINE that implements RSA by performing private key
2919 exponentiations with the GMP library. The conversions to and from
2920 GMP's mpz_t format aren't optimised nor are any montgomery forms
2921 cached, and on x86 it appears OpenSSL's own performance has caught up.
2922 However there are likely to be other architectures where GMP could
2923 provide a boost. This ENGINE is not built in by default, but it can be
2924 specified at Configure time and should be accompanied by the necessary
2925 linker additions, eg;
2926 ./config -DOPENSSL_USE_GMP -lgmp
2929 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2930 testing availability of engines with "-t" - the old behaviour is
2931 produced by increasing the feature's verbosity with "-tt".
2934 *) ECDSA routines: under certain error conditions uninitialized BN objects
2935 could be freed. Solution: make sure initialization is performed early
2936 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2940 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2941 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2942 software implementations. For DSA and DH, parameter generation can
2943 also be overriden by providing the appropriate method callbacks.
2946 *) Change the "progress" mechanism used in key-generation and
2947 primality testing to functions that take a new BN_GENCB pointer in
2948 place of callback/argument pairs. The new API functions have "_ex"
2949 postfixes and the older functions are reimplemented as wrappers for
2950 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2951 declarations of the old functions to help (graceful) attempts to
2952 migrate to the new functions. Also, the new key-generation API
2953 functions operate on a caller-supplied key-structure and return
2954 success/failure rather than returning a key or NULL - this is to
2955 help make "keygen" another member function of RSA_METHOD etc.
2957 Example for using the new callback interface:
2959 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2963 BN_GENCB_set(&my_cb, my_callback, my_arg);
2965 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2966 /* For the meaning of a, b in calls to my_callback(), see the
2967 * documentation of the function that calls the callback.
2968 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2969 * my_callback should return 1 if it wants BN_is_prime_ex()
2970 * to continue, or 0 to stop.
2975 *) Change the ZLIB compression method to be stateful, and make it
2976 available to TLS with the number defined in
2977 draft-ietf-tls-compression-04.txt.
2980 *) Add the ASN.1 structures and functions for CertificatePair, which
2981 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2983 CertificatePair ::= SEQUENCE {
2984 forward [0] Certificate OPTIONAL,
2985 reverse [1] Certificate OPTIONAL,
2986 -- at least one of the pair shall be present -- }
2988 Also implement the PEM functions to read and write certificate
2989 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2991 This needed to be defined, mostly for the sake of the LDAP
2992 attribute crossCertificatePair, but may prove useful elsewhere as
2996 *) Make it possible to inhibit symlinking of shared libraries in
2997 Makefile.shared, for Cygwin's sake.
3000 *) Extend the BIGNUM API by creating a function
3001 void BN_set_negative(BIGNUM *a, int neg);
3002 and a macro that behave like
3003 int BN_is_negative(const BIGNUM *a);
3005 to avoid the need to access 'a->neg' directly in applications.
3008 *) Implement fast modular reduction for pseudo-Mersenne primes
3009 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3010 EC_GROUP_new_curve_GFp() will now automatically use this
3012 [Nils Larsch <nla@trustcenter.de>]
3014 *) Add new lock type (CRYPTO_LOCK_BN).
3017 *) Change the ENGINE framework to automatically load engines
3018 dynamically from specific directories unless they could be
3019 found to already be built in or loaded. Move all the
3020 current engines except for the cryptodev one to a new
3022 The engines in engines/ are built as shared libraries if
3023 the "shared" options was given to ./Configure or ./config.
3024 Otherwise, they are inserted in libcrypto.a.
3025 /usr/local/ssl/engines is the default directory for dynamic
3026 engines, but that can be overriden at configure time through
3027 the usual use of --prefix and/or --openssldir, and at run
3028 time with the environment variable OPENSSL_ENGINES.
3029 [Geoff Thorpe and Richard Levitte]
3031 *) Add Makefile.shared, a helper makefile to build shared
3032 libraries. Addapt Makefile.org.
3035 *) Add version info to Win32 DLLs.
3036 [Peter 'Luna' Runestig" <peter@runestig.com>]
3038 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3039 can be added using this API to created arbitrary PKCS#12
3040 files while avoiding the low level API.
3042 New options to PKCS12_create(), key or cert can be NULL and
3043 will then be omitted from the output file. The encryption
3044 algorithm NIDs can be set to -1 for no encryption, the mac
3045 iteration count can be set to 0 to omit the mac.
3047 Enhance pkcs12 utility by making the -nokeys and -nocerts
3048 options work when creating a PKCS#12 file. New option -nomac
3049 to omit the mac, NONE can be set for an encryption algorithm.
3050 New code is modified to use the enhanced PKCS12_create()
3051 instead of the low level API.
3054 *) Extend ASN1 encoder to support indefinite length constructed
3055 encoding. This can output sequences tags and octet strings in
3056 this form. Modify pk7_asn1.c to support indefinite length
3057 encoding. This is experimental and needs additional code to
3058 be useful, such as an ASN1 bio and some enhanced streaming
3061 Extend template encode functionality so that tagging is passed
3062 down to the template encoder.
3065 *) Let 'openssl req' fail if an argument to '-newkey' is not
3066 recognized instead of using RSA as a default.
3069 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3070 As these are not official, they are not included in "ALL";
3071 the "ECCdraft" ciphersuite group alias can be used to select them.
3072 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3074 *) Add ECDH engine support.
3075 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3077 *) Add ECDH in new directory crypto/ecdh/.
3078 [Douglas Stebila (Sun Microsystems Laboratories)]
3080 *) Let BN_rand_range() abort with an error after 100 iterations
3081 without success (which indicates a broken PRNG).
3084 *) Change BN_mod_sqrt() so that it verifies that the input value
3085 is really the square of the return value. (Previously,
3086 BN_mod_sqrt would show GIGO behaviour.)
3089 *) Add named elliptic curves over binary fields from X9.62, SECG,
3090 and WAP/WTLS; add OIDs that were still missing.
3092 [Sheueling Chang Shantz and Douglas Stebila
3093 (Sun Microsystems Laboratories)]
3095 *) Extend the EC library for elliptic curves over binary fields
3096 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3099 EC_GF2m_simple_method
3103 EC_GROUP_new_curve_GF2m
3104 EC_GROUP_set_curve_GF2m
3105 EC_GROUP_get_curve_GF2m
3106 EC_POINT_set_affine_coordinates_GF2m
3107 EC_POINT_get_affine_coordinates_GF2m
3108 EC_POINT_set_compressed_coordinates_GF2m
3110 Point compression for binary fields is disabled by default for
3111 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3114 As binary polynomials are represented as BIGNUMs, various members
3115 of the EC_GROUP and EC_POINT data structures can be shared
3116 between the implementations for prime fields and binary fields;
3117 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3118 are essentially identical to their ..._GFp counterparts.
3119 (For simplicity, the '..._GFp' prefix has been dropped from
3120 various internal method names.)
3122 An internal 'field_div' method (similar to 'field_mul' and
3123 'field_sqr') has been added; this is used only for binary fields.
3125 [Sheueling Chang Shantz and Douglas Stebila
3126 (Sun Microsystems Laboratories)]
3128 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3129 through methods ('mul', 'precompute_mult').
3131 The generic implementations (now internally called 'ec_wNAF_mul'
3132 and 'ec_wNAF_precomputed_mult') remain the default if these
3133 methods are undefined.
3135 [Sheueling Chang Shantz and Douglas Stebila
3136 (Sun Microsystems Laboratories)]
3138 *) New function EC_GROUP_get_degree, which is defined through
3139 EC_METHOD. For curves over prime fields, this returns the bit
3140 length of the modulus.
3142 [Sheueling Chang Shantz and Douglas Stebila
3143 (Sun Microsystems Laboratories)]
3145 *) New functions EC_GROUP_dup, EC_POINT_dup.
3146 (These simply call ..._new and ..._copy).
3148 [Sheueling Chang Shantz and Douglas Stebila
3149 (Sun Microsystems Laboratories)]
3151 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3152 Polynomials are represented as BIGNUMs (where the sign bit is not
3153 used) in the following functions [macros]:
3156 BN_GF2m_sub [= BN_GF2m_add]
3157 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3158 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3159 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3161 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3162 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3163 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3164 BN_GF2m_cmp [= BN_ucmp]
3166 (Note that only the 'mod' functions are actually for fields GF(2^m).
3167 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3169 For some functions, an the irreducible polynomial defining a
3170 field can be given as an 'unsigned int[]' with strictly
3171 decreasing elements giving the indices of those bits that are set;
3172 i.e., p[] represents the polynomial
3173 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3175 p[0] > p[1] > ... > p[k] = 0.
3176 This applies to the following functions:
3181 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3182 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3184 BN_GF2m_mod_sqrt_arr
3185 BN_GF2m_mod_solve_quad_arr
3189 Conversion can be performed by the following functions:
3194 bntest.c has additional tests for binary polynomial arithmetic.
3196 Two implementations for BN_GF2m_mod_div() are available.
3197 The default algorithm simply uses BN_GF2m_mod_inv() and
3198 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3199 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3200 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3202 [Sheueling Chang Shantz and Douglas Stebila
3203 (Sun Microsystems Laboratories)]
3205 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3206 functionality is disabled at compile-time.
3207 [Douglas Stebila <douglas.stebila@sun.com>]
3209 *) Change default behaviour of 'openssl asn1parse' so that more
3210 information is visible when viewing, e.g., a certificate:
3212 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3213 mode the content of non-printable OCTET STRINGs is output in a
3214 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3215 avoid the appearance of a printable string.
3216 [Nils Larsch <nla@trustcenter.de>]
3218 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3220 EC_GROUP_set_asn1_flag()
3221 EC_GROUP_get_asn1_flag()
3222 EC_GROUP_set_point_conversion_form()
3223 EC_GROUP_get_point_conversion_form()
3224 These control ASN1 encoding details:
3225 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3226 has been set to OPENSSL_EC_NAMED_CURVE.
3227 - Points are encoded in uncompressed form by default; options for
3228 asn1_for are as for point2oct, namely
3229 POINT_CONVERSION_COMPRESSED
3230 POINT_CONVERSION_UNCOMPRESSED
3231 POINT_CONVERSION_HYBRID
3233 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3236 EC_GROUP_get0_seed()
3237 EC_GROUP_get_seed_len()
3238 This is used only for ASN1 purposes (so far).
3239 [Nils Larsch <nla@trustcenter.de>]
3241 *) Add 'field_type' member to EC_METHOD, which holds the NID
3242 of the appropriate field type OID. The new function
3243 EC_METHOD_get_field_type() returns this value.
3244 [Nils Larsch <nla@trustcenter.de>]
3249 EC_POINT_point2hex()
3250 EC_POINT_hex2point()
3251 providing useful interfaces to EC_POINT_point2oct() and
3252 EC_POINT_oct2point().
3253 [Nils Larsch <nla@trustcenter.de>]
3255 *) Change internals of the EC library so that the functions
3256 EC_GROUP_set_generator()
3257 EC_GROUP_get_generator()
3258 EC_GROUP_get_order()
3259 EC_GROUP_get_cofactor()
3260 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3261 to methods, which would lead to unnecessary code duplication when
3262 adding different types of curves.
3263 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3265 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3266 arithmetic, and such that modified wNAFs are generated
3267 (which avoid length expansion in many cases).
3270 *) Add a function EC_GROUP_check_discriminant() (defined via
3271 EC_METHOD) that verifies that the curve discriminant is non-zero.
3273 Add a function EC_GROUP_check() that makes some sanity tests
3274 on a EC_GROUP, its generator and order. This includes
3275 EC_GROUP_check_discriminant().
3276 [Nils Larsch <nla@trustcenter.de>]
3278 *) Add ECDSA in new directory crypto/ecdsa/.
3280 Add applications 'openssl ecparam' and 'openssl ecdsa'
3281 (these are based on 'openssl dsaparam' and 'openssl dsa').
3283 ECDSA support is also included in various other files across the
3284 library. Most notably,
3285 - 'openssl req' now has a '-newkey ecdsa:file' option;
3286 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3287 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3288 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3289 them suitable for ECDSA where domain parameters must be
3290 extracted before the specific public key;
3291 - ECDSA engine support has been added.
3292 [Nils Larsch <nla@trustcenter.de>]
3294 *) Include some named elliptic curves, and add OIDs from X9.62,
3295 SECG, and WAP/WTLS. Each curve can be obtained from the new
3297 EC_GROUP_new_by_curve_name(),
3298 and the list of available named curves can be obtained with
3299 EC_get_builtin_curves().
3300 Also add a 'curve_name' member to EC_GROUP objects, which can be
3302 EC_GROUP_set_curve_name()
3303 EC_GROUP_get_curve_name()
3304 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3306 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3307 was actually never needed) and in BN_mul(). The removal in BN_mul()
3308 required a small change in bn_mul_part_recursive() and the addition
3309 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3310 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3311 bn_sub_words() and bn_add_words() except they take arrays with
3315 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3317 *) Cleanse PEM buffers before freeing them since they may contain
3319 [Benjamin Bennett <ben@psc.edu>]
3321 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3322 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3323 authentication-only ciphersuites.
3326 *) Since AES128 and AES256 share a single mask bit in the logic of
3327 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3328 kludge to work properly if AES128 is available and AES256 isn't.
3331 *) Expand security boundary to match 1.1.1 module.
3334 *) Remove redundant features: hash file source, editing of test vectors
3335 modify fipsld to use external fips_premain.c signature.
3338 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3339 run algorithm test programs.
3342 *) Make algorithm test programs more tolerant of whitespace.
3345 *) Have SSL/TLS server implementation tolerate "mismatched" record
3346 protocol version while receiving ClientHello even if the
3347 ClientHello is fragmented. (The server can't insist on the
3348 particular protocol version it has chosen before the ServerHello
3349 message has informed the client about his choice.)
3352 *) Load error codes if they are not already present instead of using a
3353 static variable. This allows them to be cleanly unloaded and reloaded.
3356 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3358 *) Introduce limits to prevent malicious keys being able to
3359 cause a denial of service. (CVE-2006-2940)
3360 [Steve Henson, Bodo Moeller]
3362 *) Fix ASN.1 parsing of certain invalid structures that can result
3363 in a denial of service. (CVE-2006-2937) [Steve Henson]
3365 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3366 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3368 *) Fix SSL client code which could crash if connecting to a
3369 malicious SSLv2 server. (CVE-2006-4343)
3370 [Tavis Ormandy and Will Drewry, Google Security Team]
3372 *) Change ciphersuite string processing so that an explicit
3373 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3374 will no longer include "AES128-SHA"), and any other similar
3375 ciphersuite (same bitmap) from *other* protocol versions (so that
3376 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3377 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3378 changes from 0.9.8b and 0.9.8d.
3381 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3383 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3384 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3386 *) Change the Unix randomness entropy gathering to use poll() when
3387 possible instead of select(), since the latter has some
3388 undesirable limitations.
3389 [Darryl Miles via Richard Levitte and Bodo Moeller]
3391 *) Disable rogue ciphersuites:
3393 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3394 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3395 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3397 The latter two were purportedly from
3398 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3401 Also deactive the remaining ciphersuites from
3402 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3403 unofficial, and the ID has long expired.
3406 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3407 dual-core machines) and other potential thread-safety issues.
3410 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3412 *) Adapt fipsld and the build system to link against the validated FIPS
3413 module in FIPS mode.
3416 *) Fixes for VC++ 2005 build under Windows.
3419 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3420 from a Windows bash shell such as MSYS. It is autodetected from the
3421 "config" script when run from a VC++ environment. Modify standard VC++
3422 build to use fipscanister.o from the GNU make build.
3425 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3427 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3428 The value now differs depending on if you build for FIPS or not.
3429 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3430 safely run with a non-FIPSed libcrypto, as it may crash because of
3431 the difference induced by this change.
3434 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3436 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3437 (part of SSL_OP_ALL). This option used to disable the
3438 countermeasure against man-in-the-middle protocol-version
3439 rollback in the SSL 2.0 server implementation, which is a bad
3440 idea. (CVE-2005-2969)
3442 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3443 for Information Security, National Institute of Advanced Industrial
3444 Science and Technology [AIST], Japan)]
3446 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3447 mainly for FIPS compliance and not fully integrated at this stage.
3450 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3451 the exponentiation using a fixed-length exponent. (Otherwise,
3452 the information leaked through timing could expose the secret key
3453 after many signatures; cf. Bleichenbacher's attack on DSA with
3457 *) Make a new fixed-window mod_exp implementation the default for
3458 RSA, DSA, and DH private-key operations so that the sequence of
3459 squares and multiplies and the memory access pattern are
3460 independent of the particular secret key. This will mitigate
3461 cache-timing and potential related attacks.
3463 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3464 and this is automatically used by BN_mod_exp_mont() if the new flag
3465 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3466 will use this BN flag for private exponents unless the flag
3467 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3468 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3470 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3472 *) Change the client implementation for SSLv23_method() and
3473 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3474 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3475 (Previously, the SSL 2.0 backwards compatible Client Hello
3476 message format would be used even with SSL_OP_NO_SSLv2.)
3479 *) Add support for smime-type MIME parameter in S/MIME messages which some
3483 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3484 a threadsafe manner. Modify rsa code to use new function and add calls
3485 to dsa and dh code (which had race conditions before).
3488 *) Include the fixed error library code in the C error file definitions
3489 instead of fixing them up at runtime. This keeps the error code
3490 structures constant.
3493 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3495 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3498 *) Fixes for newer kerberos headers. NB: the casts are needed because
3499 the 'length' field is signed on one version and unsigned on another
3500 with no (?) obvious way to tell the difference, without these VC++
3501 complains. Also the "definition" of FAR (blank) is no longer included
3502 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3503 some needed definitions.
3506 *) Undo Cygwin change.
3509 *) Added support for proxy certificates according to RFC 3820.
3510 Because they may be a security thread to unaware applications,
3511 they must be explicitely allowed in run-time. See
3512 docs/HOWTO/proxy_certificates.txt for further information.
3515 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3517 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3518 server and client random values. Previously
3519 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3520 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3522 This change has negligible security impact because:
3524 1. Server and client random values still have 24 bytes of pseudo random
3527 2. Server and client random values are sent in the clear in the initial
3530 3. The master secret is derived using the premaster secret (48 bytes in
3531 size for static RSA ciphersuites) as well as client server and random
3534 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3537 [Stephen Henson, reported by UK NISCC]
3539 *) Use Windows randomness collection on Cygwin.
3542 *) Fix hang in EGD/PRNGD query when communication socket is closed
3543 prematurely by EGD/PRNGD.
3544 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3546 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3549 *) Back-port of selected performance improvements from development
3550 branch, as well as improved support for PowerPC platforms.
3553 *) Add lots of checks for memory allocation failure, error codes to indicate
3554 failure and freeing up memory if a failure occurs.
3555 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3557 *) Add new -passin argument to dgst.
3560 *) Perform some character comparisons of different types in X509_NAME_cmp:
3561 this is needed for some certificates that reencode DNs into UTF8Strings
3562 (in violation of RFC3280) and can't or wont issue name rollover
3566 *) Make an explicit check during certificate validation to see that
3567 the CA setting in each certificate on the chain is correct. As a
3568 side effect always do the following basic checks on extensions,
3569 not just when there's an associated purpose to the check:
3571 - if there is an unhandled critical extension (unless the user
3572 has chosen to ignore this fault)
3573 - if the path length has been exceeded (if one is set at all)
3574 - that certain extensions fit the associated purpose (if one has
3578 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3580 *) Avoid a race condition when CRLs are checked in a multi threaded
3581 environment. This would happen due to the reordering of the revoked
3582 entries during signature checking and serial number lookup. Now the
3583 encoding is cached and the serial number sort performed under a lock.
3584 Add new STACK function sk_is_sorted().
3587 *) Add Delta CRL to the extension code.
3590 *) Various fixes to s3_pkt.c so alerts are sent properly.
3591 [David Holmes <d.holmes@f5.com>]
3593 *) Reduce the chances of duplicate issuer name and serial numbers (in
3594 violation of RFC3280) using the OpenSSL certificate creation utilities.
3595 This is done by creating a random 64 bit value for the initial serial
3596 number when a serial number file is created or when a self signed
3597 certificate is created using 'openssl req -x509'. The initial serial
3598 number file is created using 'openssl x509 -next_serial' in CA.pl
3599 rather than being initialized to 1.
3602 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3604 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3605 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3606 [Joe Orton, Steve Henson]
3608 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3610 [Joe Orton, Steve Henson]
3612 *) Make it possible to have multiple active certificates with the same
3613 subject in the CA index file. This is done only if the keyword
3614 'unique_subject' is set to 'no' in the main CA section (default
3615 if 'CA_default') of the configuration file. The value is saved
3616 with the database itself in a separate index attribute file,
3617 named like the index file with '.attr' appended to the name.
3620 *) X509 verify fixes. Disable broken certificate workarounds when
3621 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3622 keyUsage extension present. Don't accept CRLs with unhandled critical
3623 extensions: since verify currently doesn't process CRL extensions this
3624 rejects a CRL with *any* critical extensions. Add new verify error codes
3628 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3629 A clarification of RFC2560 will require the use of OCTET STRINGs and
3630 some implementations cannot handle the current raw format. Since OpenSSL
3631 copies and compares OCSP nonces as opaque blobs without any attempt at
3632 parsing them this should not create any compatibility issues.
3635 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3636 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3637 this HMAC (and other) operations are several times slower than OpenSSL
3641 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3642 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3644 *) Use the correct content when signing type "other".
3647 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3649 *) Fix various bugs revealed by running the NISCC test suite:
3651 Stop out of bounds reads in the ASN1 code when presented with
3652 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3654 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3656 If verify callback ignores invalid public key errors don't try to check
3657 certificate signature with the NULL public key.
3661 *) New -ignore_err option in ocsp application to stop the server
3662 exiting on the first error in a request.
3665 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3666 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3670 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3671 extra data after the compression methods not only for TLS 1.0
3672 but also for SSL 3.0 (as required by the specification).
3673 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3675 *) Change X509_certificate_type() to mark the key as exported/exportable
3676 when it's 512 *bits* long, not 512 bytes.
3679 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3680 blocks during encryption.
3683 *) Various fixes to base64 BIO and non blocking I/O. On write
3684 flushes were not handled properly if the BIO retried. On read
3685 data was not being buffered properly and had various logic bugs.
3686 This also affects blocking I/O when the data being decoded is a
3690 *) Various S/MIME bugfixes and compatibility changes:
3691 output correct application/pkcs7 MIME type if
3692 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3693 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3694 of files as .eml work). Correctly handle very long lines in MIME
3698 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3700 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3701 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3702 a protocol version number mismatch like a decryption error
3703 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3706 *) Turn on RSA blinding by default in the default implementation
3707 to avoid a timing attack. Applications that don't want it can call
3708 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3709 They would be ill-advised to do so in most cases.
3710 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3712 *) Change RSA blinding code so that it works when the PRNG is not
3713 seeded (in this case, the secret RSA exponent is abused as
3714 an unpredictable seed -- if it is not unpredictable, there
3715 is no point in blinding anyway). Make RSA blinding thread-safe
3716 by remembering the creator's thread ID in rsa->blinding and
3717 having all other threads use local one-time blinding factors
3718 (this requires more computation than sharing rsa->blinding, but
3719 avoids excessive locking; and if an RSA object is not shared
3720 between threads, blinding will still be very fast).
3723 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3724 ENGINE as defaults for all supported algorithms irrespective of
3725 the 'flags' parameter. 'flags' is now honoured, so applications
3726 should make sure they are passing it correctly.
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