5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Transparently support X9.42 DH parameters when calling
8 PEM_read_bio_DHparameters. This means existing applications can handle
9 the new parameter format automatically.
12 *) Initial experimental support for X9.42 DH parameter format: mainly
13 to support use of 'q' parameter for RFC5114 parameters.
16 *) Add DH parameters from RFC5114 including test data to dhtest.
19 *) Update fips_test_suite to support multiple command line options. New
20 test to induce all self test errors in sequence and check expected
24 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
25 sign or verify all in one operation.
28 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
29 test programs and fips_test_suite. Includes functionality to parse
30 the minimal script output of fipsalgest.pl directly.
33 *) Add authorisation parameter to FIPS_module_mode_set().
36 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
39 *) Use separate DRBG fields for internal and external flags. New function
40 FIPS_drbg_health_check() to perform on demand health checking. Add
41 generation tests to fips_test_suite with reduced health check interval to
42 demonstrate periodic health checking. Add "nodh" option to
43 fips_test_suite to skip very slow DH test.
46 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
50 *) More extensive health check for DRBG checking many more failure modes.
51 New function FIPS_selftest_drbg_all() to handle every possible DRBG
52 combination: call this in fips_test_suite.
55 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
56 and POST to handle Dual EC cases.
59 *) Add support for canonical generation of DSA parameter 'g'. See
62 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
63 POST to handle HMAC cases.
66 *) Add functions FIPS_module_version() and FIPS_module_version_text()
67 to return numberical and string versions of the FIPS module number.
70 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
71 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
72 outside the validated module in the FIPS capable OpenSSL.
75 *) Minor change to DRBG entropy callback semantics. In some cases
76 there is no mutiple of the block length between min_len and
77 max_len. Allow the callback to return more than max_len bytes
78 of entropy but discard any extra: it is the callback's responsibility
79 to ensure that the extra data discarded does not impact the
80 requested amount of entropy.
83 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
84 information in FIPS186-3, SP800-57 and SP800-131A.
87 *) CCM support via EVP. Interface is very similar to GCM case except we
88 must supply all data in one chunk (i.e. no update, final) and the
89 message length must be supplied if AAD is used. Add algorithm test
93 *) Initial version of POST overhaul. Add POST callback to allow the status
94 of POST to be monitored and/or failures induced. Modify fips_test_suite
95 to use callback. Always run all selftests even if one fails.
98 *) XTS support including algorithm test driver in the fips_gcmtest program.
99 Note: this does increase the maximum key length from 32 to 64 bytes but
100 there should be no binary compatibility issues as existing applications
101 will never use XTS mode.
104 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
105 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
106 performs algorithm blocking for unapproved PRNG types. Also do not
107 set PRNG type in FIPS_mode_set(): leave this to the application.
108 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
109 the standard OpenSSL PRNG: set additional data to a date time vector.
112 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
113 This shouldn't present any incompatibility problems because applications
114 shouldn't be using these directly and any that are will need to rethink
115 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
118 *) Extensive self tests and health checking required by SP800-90 DRBG.
119 Remove strength parameter from FIPS_drbg_instantiate and always
120 instantiate at maximum supported strength.
123 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
126 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
129 *) New function DH_compute_key_padded() to compute a DH key and pad with
130 leading zeroes if needed: this complies with SP800-56A et al.
133 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
134 anything, incomplete, subject to change and largely untested at present.
137 *) Modify fipscanisteronly build option to only build the necessary object
138 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
141 *) Add experimental option FIPSSYMS to give all symbols in
142 fipscanister.o and FIPS or fips prefix. This will avoid
143 conflicts with future versions of OpenSSL. Add perl script
144 util/fipsas.pl to preprocess assembly language source files
145 and rename any affected symbols.
148 *) Add selftest checks and algorithm block of non-fips algorithms in
149 FIPS mode. Remove DES2 from selftests.
152 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
153 return internal method without any ENGINE dependencies. Add new
154 tiny fips sign and verify functions.
157 *) New build option no-ec2m to disable characteristic 2 code.
160 *) New build option "fipscanisteronly". This only builds fipscanister.o
161 and (currently) associated fips utilities. Uses the file Makefile.fips
162 instead of Makefile.org as the prototype.
165 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
166 Update fips_gcmtest to use IV generator.
169 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
170 setting output buffer to NULL. The *Final function must be
171 called although it will not retrieve any additional data. The tag
172 can be set or retrieved with a ctrl. The IV length is by default 12
173 bytes (96 bits) but can be set to an alternative value. If the IV
174 length exceeds the maximum IV length (currently 16 bytes) it cannot be
178 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
179 underlying do_cipher function handles all cipher semantics itself
180 including padding and finalisation. This is useful if (for example)
181 an ENGINE cipher handles block padding itself. The behaviour of
182 do_cipher is subtly changed if this flag is set: the return value
183 is the number of characters written to the output buffer (zero is
184 no longer an error code) or a negative error code. Also if the
185 input buffer is NULL and length 0 finalisation should be performed.
188 *) If a candidate issuer certificate is already part of the constructed
189 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
192 *) Improve forward-security support: add functions
194 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
195 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
197 for use by SSL/TLS servers; the callback function will be called whenever a
198 new session is created, and gets to decide whether the session may be
199 cached to make it resumable (return 0) or not (return 1). (As by the
200 SSL/TLS protocol specifications, the session_id sent by the server will be
201 empty to indicate that the session is not resumable; also, the server will
202 not generate RFC 4507 (RFC 5077) session tickets.)
204 A simple reasonable callback implementation is to return is_forward_secure.
205 This parameter will be set to 1 or 0 depending on the ciphersuite selected
206 by the SSL/TLS server library, indicating whether it can provide forward
208 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
210 *) New function OPENSSL_gmtime_diff to find the difference in days
211 and seconds between two tm structures. This will be used to provide
212 additional functionality for ASN1_TIME.
215 *) Add -trusted_first option which attempts to find certificates in the
216 trusted store even if an untrusted chain is also supplied.
219 *) Initial experimental support for explicitly trusted non-root CAs.
220 OpenSSL still tries to build a complete chain to a root but if an
221 intermediate CA has a trust setting included that is used. The first
222 setting is used: whether to trust or reject.
225 *) New -verify_name option in command line utilities to set verification
229 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
230 Add CMAC pkey methods.
233 *) Experimental regnegotiation in s_server -www mode. If the client
234 browses /reneg connection is renegotiated. If /renegcert it is
235 renegotiated requesting a certificate.
238 *) Add an "external" session cache for debugging purposes to s_server. This
239 should help trace issues which normally are only apparent in deployed
240 multi-process servers.
243 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
244 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
245 BIO_set_cipher() and some obscure PEM functions were changed so they
246 can now return an error. The RAND changes required a change to the
247 RAND_METHOD structure.
250 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
251 a gcc attribute to warn if the result of a function is ignored. This
252 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
253 whose return value is often ignored.
256 Changes between 1.0.0f and 1.0.1 [xx XXX xxxx]
258 *) Add support for TLS/DTLS heartbeats.
259 [Robin Seggelmann <seggelmann@fh-muenster.de>]
261 *) Add support for SCTP.
262 [Robin Seggelmann <seggelmann@fh-muenster.de>]
264 *) Improved PRNG seeding for VOS.
265 [Paul Green <Paul.Green@stratus.com>]
267 *) Extensive assembler packs updates, most notably:
269 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
270 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
271 - x86_64: bit-sliced AES implementation;
272 - ARM: NEON support, contemporary platforms optimizations;
273 - s390x: z196 support;
274 - *: GHASH and GF(2^m) multiplication implementations;
278 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
279 (removal of unnecessary code)
280 [Peter Sylvester <peter.sylvester@edelweb.fr>]
282 *) Add -attime option to openssl utilities.
283 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
285 *) Add TLS key material exporter from RFC 5705.
288 *) Add DTLS-SRTP negotiation from RFC 5764.
291 *) Add Next Protocol Negotiation,
292 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
293 disabled with a no-npn flag to config or Configure. Code donated
295 [Adam Langley <agl@google.com> and Ben Laurie]
297 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
298 NIST-P256, NIST-P521, with constant-time single point multiplication on
299 typical inputs. Compiler support for the nonstandard type __uint128_t is
300 required to use this (present in gcc 4.4 and later, for 64-bit builds).
301 Code made available under Apache License version 2.0.
303 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
304 line to include this in your build of OpenSSL, and run "make depend" (or
305 "make update"). This enables the following EC_METHODs:
307 EC_GFp_nistp224_method()
308 EC_GFp_nistp256_method()
309 EC_GFp_nistp521_method()
311 EC_GROUP_new_by_curve_name() will automatically use these (while
312 EC_GROUP_new_curve_GFp() currently prefers the more flexible
314 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
316 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
317 all platforms. Move ssize_t definition from e_os.h to the public
318 header file e_os2.h as it now appears in public header file cms.h
321 *) New -sigopt option to the ca, req and x509 utilities. Additional
322 signature parameters can be passed using this option and in
326 *) Add RSA PSS signing function. This will generate and set the
327 appropriate AlgorithmIdentifiers for PSS based on those in the
328 corresponding EVP_MD_CTX structure. No application support yet.
331 *) Support for companion algorithm specific ASN1 signing routines.
332 New function ASN1_item_sign_ctx() signs a pre-initialised
333 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
334 the appropriate parameters.
337 *) Add new algorithm specific ASN1 verification initialisation function
338 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
339 handling will be the same no matter what EVP_PKEY_METHOD is used.
340 Add a PSS handler to support verification of PSS signatures: checked
341 against a number of sample certificates.
344 *) Add signature printing for PSS. Add PSS OIDs.
345 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
347 *) Add algorithm specific signature printing. An individual ASN1 method
348 can now print out signatures instead of the standard hex dump.
350 More complex signatures (e.g. PSS) can print out more meaningful
351 information. Include DSA version that prints out the signature
355 *) Password based recipient info support for CMS library: implementing
359 *) Split password based encryption into PBES2 and PBKDF2 functions. This
360 neatly separates the code into cipher and PBE sections and is required
361 for some algorithms that split PBES2 into separate pieces (such as
365 *) Session-handling fixes:
366 - Fix handling of connections that are resuming with a session ID,
367 but also support Session Tickets.
368 - Fix a bug that suppressed issuing of a new ticket if the client
369 presented a ticket with an expired session.
370 - Try to set the ticket lifetime hint to something reasonable.
371 - Make tickets shorter by excluding irrelevant information.
372 - On the client side, don't ignore renewed tickets.
373 [Adam Langley, Bodo Moeller (Google)]
375 *) Fix PSK session representation.
378 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
380 This work was sponsored by Intel.
383 *) Add GCM support to TLS library. Some custom code is needed to split
384 the IV between the fixed (from PRF) and explicit (from TLS record)
385 portions. This adds all GCM ciphersuites supported by RFC5288 and
386 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
387 add a special AESGCM string for GCM only.
390 *) Expand range of ctrls for AES GCM. Permit setting invocation
391 field on decrypt and retrieval of invocation field only on encrypt.
394 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
395 As required by RFC5289 these ciphersuites cannot be used if for
396 versions of TLS earlier than 1.2.
399 *) For FIPS capable OpenSSL interpret a NULL default public key method
400 as unset and return the appopriate default but do *not* set the default.
401 This means we can return the appopriate method in applications that
402 swicth between FIPS and non-FIPS modes.
405 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
406 ENGINE is used then we cannot handle that in the FIPS module so we
407 keep original code iff non-FIPS operations are allowed.
410 *) Add -attime option to openssl verify.
411 [Peter Eckersley <pde@eff.org> and Ben Laurie]
413 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
416 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
417 FIPS EC methods unconditionally for now.
420 *) New build option no-ec2m to disable characteristic 2 code.
423 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
424 all cases can be covered as some introduce binary incompatibilities.
427 *) Redirect RSA operations to FIPS module including keygen,
428 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
431 *) Add similar low level API blocking to ciphers.
434 *) Low level digest APIs are not approved in FIPS mode: any attempt
435 to use these will cause a fatal error. Applications that *really* want
436 to use them can use the private_* version instead.
439 *) Redirect cipher operations to FIPS module for FIPS builds.
442 *) Redirect digest operations to FIPS module for FIPS builds.
445 *) Update build system to add "fips" flag which will link in fipscanister.o
446 for static and shared library builds embedding a signature if needed.
449 *) Output TLS supported curves in preference order instead of numerical
450 order. This is currently hardcoded for the highest order curves first.
451 This should be configurable so applications can judge speed vs strength.
454 *) Add TLS v1.2 server support for client authentication.
457 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
461 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
462 FIPS modules versions.
465 *) Add TLS v1.2 client side support for client authentication. Keep cache
466 of handshake records longer as we don't know the hash algorithm to use
467 until after the certificate request message is received.
470 *) Initial TLS v1.2 client support. Add a default signature algorithms
471 extension including all the algorithms we support. Parse new signature
472 format in client key exchange. Relax some ECC signing restrictions for
473 TLS v1.2 as indicated in RFC5246.
476 *) Add server support for TLS v1.2 signature algorithms extension. Switch
477 to new signature format when needed using client digest preference.
478 All server ciphersuites should now work correctly in TLS v1.2. No client
479 support yet and no support for client certificates.
482 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
483 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
484 ciphersuites. At present only RSA key exchange ciphersuites work with
485 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
486 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
487 and version checking.
490 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
491 with this defined it will not be affected by any changes to ssl internal
492 structures. Add several utility functions to allow openssl application
493 to work with OPENSSL_NO_SSL_INTERN defined.
497 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
499 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
502 *) Permit abbreviated handshakes when renegotiating using the function
503 SSL_renegotiate_abbreviated().
504 [Robin Seggelmann <seggelmann@fh-muenster.de>]
506 *) Add call to ENGINE_register_all_complete() to
507 ENGINE_load_builtin_engines(), so some implementations get used
508 automatically instead of needing explicit application support.
511 *) Add support for TLS key exporter as described in RFC5705.
512 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
514 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
515 a few changes are required:
517 Add SSL_OP_NO_TLSv1_1 flag.
519 Update version checking logic to handle version 1.1.
520 Add explicit IV handling (ported from DTLS code).
521 Add command line options to s_client/s_server.
524 Changes between 1.0.0e and 1.0.0f [xx XXX xxxx]
526 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
527 of the Vaudenay padding oracle attack on CBC mode encryption
528 which enables an efficient plaintext recovery attack against
529 the OpenSSL implementation of DTLS. Their attack exploits timing
530 differences arising during decryption processing. A research
531 paper describing this attack can be found at:
532 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
533 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
534 Security Group at Royal Holloway, University of London
535 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
536 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
537 for preparing the fix. (CVE-2011-4108)
538 [Robin Seggelmann, Michael Tuexen]
540 *) Clear bytes used for block padding of SSL 3.0 records.
542 [Adam Langley (Google)]
544 *) Only allow one SGC handshake restart for SSL/TLS. (CVE-2011-4619)
545 [Adam Langley (Google)]
547 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
548 [Andrey Kulikov <amdeich@gmail.com>]
550 *) Prevent malformed RFC3779 data triggering an assertion failure.
551 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
552 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
553 [Rob Austein <sra@hactrn.net>]
555 *) Fix ssl_ciph.c set-up race.
556 [Adam Langley (Google)]
558 *) Fix spurious failures in ecdsatest.c.
559 [Emilia Käsper (Google)]
561 *) Fix the BIO_f_buffer() implementation (which was mixing different
562 interpretations of the '..._len' fields).
563 [Adam Langley (Google)]
565 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
566 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
567 threads won't reuse the same blinding coefficients.
569 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
570 lock to call BN_BLINDING_invert_ex, and avoids one use of
571 BN_BLINDING_update for each BN_BLINDING structure (previously,
572 the last update always remained unused).
573 [Emilia Käsper (Google)]
575 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
576 [Bob Buckholz (Google)]
578 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
580 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
581 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
582 [Kaspar Brand <ossl@velox.ch>]
584 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
585 for multi-threaded use of ECDH. (CVE-2011-3210)
586 [Adam Langley (Google)]
588 *) Fix x509_name_ex_d2i memory leak on bad inputs.
591 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
592 signature public key algorithm by using OID xref utilities instead.
593 Before this you could only use some ECC ciphersuites with SHA1 only.
596 *) Add protection against ECDSA timing attacks as mentioned in the paper
597 by Billy Bob Brumley and Nicola Tuveri, see:
599 http://eprint.iacr.org/2011/232.pdf
601 [Billy Bob Brumley and Nicola Tuveri]
603 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
605 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
606 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
608 *) Fix bug in string printing code: if *any* escaping is enabled we must
609 escape the escape character (backslash) or the resulting string is
613 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
615 *) Disable code workaround for ancient and obsolete Netscape browsers
616 and servers: an attacker can use it in a ciphersuite downgrade attack.
617 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
620 *) Fixed J-PAKE implementation error, originally discovered by
621 Sebastien Martini, further info and confirmation from Stefan
622 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
625 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
627 *) Fix extension code to avoid race conditions which can result in a buffer
628 overrun vulnerability: resumed sessions must not be modified as they can
629 be shared by multiple threads. CVE-2010-3864
632 *) Fix WIN32 build system to correctly link an ENGINE directory into
636 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
638 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
640 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
642 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
644 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
645 context. The operation can be customised via the ctrl mechanism in
646 case ENGINEs want to include additional functionality.
649 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
652 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
653 output hashes compatible with older versions of OpenSSL.
654 [Willy Weisz <weisz@vcpc.univie.ac.at>]
656 *) Fix compression algorithm handling: if resuming a session use the
657 compression algorithm of the resumed session instead of determining
658 it from client hello again. Don't allow server to change algorithm.
661 *) Add load_crls() function to apps tidying load_certs() too. Add option
662 to verify utility to allow additional CRLs to be included.
665 *) Update OCSP request code to permit adding custom headers to the request:
666 some responders need this.
669 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
671 [Julia Lawall <julia@diku.dk>]
673 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
674 needlessly dereferenced structures, used obsolete functions and
675 didn't handle all updated verify codes correctly.
678 *) Disable MD2 in the default configuration.
681 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
682 indicate the initial BIO being pushed or popped. This makes it possible
683 to determine whether the BIO is the one explicitly called or as a result
684 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
685 it handles reference counts correctly and doesn't zero out the I/O bio
686 when it is not being explicitly popped. WARNING: applications which
687 included workarounds for the old buggy behaviour will need to be modified
688 or they could free up already freed BIOs.
691 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
692 renaming to all platforms (within the 0.9.8 branch, this was
693 done conditionally on Netware platforms to avoid a name clash).
694 [Guenter <lists@gknw.net>]
696 *) Add ECDHE and PSK support to DTLS.
697 [Michael Tuexen <tuexen@fh-muenster.de>]
699 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
703 *) Add "missing" function EVP_MD_flags() (without this the only way to
704 retrieve a digest flags is by accessing the structure directly. Update
705 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
706 or cipher is registered as in the "from" argument. Print out all
707 registered digests in the dgst usage message instead of manually
708 attempting to work them out.
711 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
712 this allows the use of compression and extensions. Change default cipher
713 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
714 by default unless an application cipher string requests it.
717 *) Alter match criteria in PKCS12_parse(). It used to try to use local
718 key ids to find matching certificates and keys but some PKCS#12 files
719 don't follow the (somewhat unwritten) rules and this strategy fails.
720 Now just gather all certificates together and the first private key
721 then look for the first certificate that matches the key.
724 *) Support use of registered digest and cipher names for dgst and cipher
725 commands instead of having to add each one as a special case. So now
732 openssl dgst -sha256 foo
734 and this works for ENGINE based algorithms too.
738 *) Update Gost ENGINE to support parameter files.
739 [Victor B. Wagner <vitus@cryptocom.ru>]
741 *) Support GeneralizedTime in ca utility.
742 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
744 *) Enhance the hash format used for certificate directory links. The new
745 form uses the canonical encoding (meaning equivalent names will work
746 even if they aren't identical) and uses SHA1 instead of MD5. This form
747 is incompatible with the older format and as a result c_rehash should
748 be used to rebuild symbolic links.
751 *) Make PKCS#8 the default write format for private keys, replacing the
752 traditional format. This form is standardised, more secure and doesn't
753 include an implicit MD5 dependency.
756 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
757 committed to OpenSSL should pass this lot as a minimum.
760 *) Add session ticket override functionality for use by EAP-FAST.
761 [Jouni Malinen <j@w1.fi>]
763 *) Modify HMAC functions to return a value. Since these can be implemented
764 in an ENGINE errors can occur.
767 *) Type-checked OBJ_bsearch_ex.
770 *) Type-checked OBJ_bsearch. Also some constification necessitated
771 by type-checking. Still to come: TXT_DB, bsearch(?),
772 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
776 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
777 seconds to a tm structure directly, instead of going through OS
778 specific date routines. This avoids any issues with OS routines such
779 as the year 2038 bug. New *_adj() functions for ASN1 time structures
780 and X509_time_adj_ex() to cover the extended range. The existing
781 X509_time_adj() is still usable and will no longer have any date issues.
784 *) Delta CRL support. New use deltas option which will attempt to locate
785 and search any appropriate delta CRLs available.
787 This work was sponsored by Google.
790 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
791 code and add additional score elements. Validate alternate CRL paths
792 as part of the CRL checking and indicate a new error "CRL path validation
793 error" in this case. Applications wanting additional details can use
794 the verify callback and check the new "parent" field. If this is not
795 NULL CRL path validation is taking place. Existing applications wont
796 see this because it requires extended CRL support which is off by
799 This work was sponsored by Google.
802 *) Support for freshest CRL extension.
804 This work was sponsored by Google.
807 *) Initial indirect CRL support. Currently only supported in the CRLs
808 passed directly and not via lookup. Process certificate issuer
809 CRL entry extension and lookup CRL entries by bother issuer name
810 and serial number. Check and process CRL issuer entry in IDP extension.
812 This work was sponsored by Google.
815 *) Add support for distinct certificate and CRL paths. The CRL issuer
816 certificate is validated separately in this case. Only enabled if
817 an extended CRL support flag is set: this flag will enable additional
818 CRL functionality in future.
820 This work was sponsored by Google.
823 *) Add support for policy mappings extension.
825 This work was sponsored by Google.
828 *) Fixes to pathlength constraint, self issued certificate handling,
829 policy processing to align with RFC3280 and PKITS tests.
831 This work was sponsored by Google.
834 *) Support for name constraints certificate extension. DN, email, DNS
835 and URI types are currently supported.
837 This work was sponsored by Google.
840 *) To cater for systems that provide a pointer-based thread ID rather
841 than numeric, deprecate the current numeric thread ID mechanism and
842 replace it with a structure and associated callback type. This
843 mechanism allows a numeric "hash" to be extracted from a thread ID in
844 either case, and on platforms where pointers are larger than 'long',
845 mixing is done to help ensure the numeric 'hash' is usable even if it
846 can't be guaranteed unique. The default mechanism is to use "&errno"
847 as a pointer-based thread ID to distinguish between threads.
849 Applications that want to provide their own thread IDs should now use
850 CRYPTO_THREADID_set_callback() to register a callback that will call
851 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
853 Note that ERR_remove_state() is now deprecated, because it is tied
854 to the assumption that thread IDs are numeric. ERR_remove_state(0)
855 to free the current thread's error state should be replaced by
856 ERR_remove_thread_state(NULL).
858 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
859 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
860 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
861 application was previously providing a numeric thread callback that
862 was inappropriate for distinguishing threads, then uniqueness might
863 have been obtained with &errno that happened immediately in the
864 intermediate development versions of OpenSSL; this is no longer the
865 case, the numeric thread callback will now override the automatic use
867 [Geoff Thorpe, with help from Bodo Moeller]
869 *) Initial support for different CRL issuing certificates. This covers a
870 simple case where the self issued certificates in the chain exist and
871 the real CRL issuer is higher in the existing chain.
873 This work was sponsored by Google.
876 *) Removed effectively defunct crypto/store from the build.
879 *) Revamp of STACK to provide stronger type-checking. Still to come:
880 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
881 ASN1_STRING, CONF_VALUE.
884 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
885 RAM on SSL connections. This option can save about 34k per idle SSL.
888 *) Revamp of LHASH to provide stronger type-checking. Still to come:
889 STACK, TXT_DB, bsearch, qsort.
892 *) Initial support for Cryptographic Message Syntax (aka CMS) based
893 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
894 support for data, signedData, compressedData, digestedData and
895 encryptedData, envelopedData types included. Scripts to check against
896 RFC4134 examples draft and interop and consistency checks of many
897 content types and variants.
900 *) Add options to enc utility to support use of zlib compression BIO.
903 *) Extend mk1mf to support importing of options and assembly language
904 files from Configure script, currently only included in VC-WIN32.
905 The assembly language rules can now optionally generate the source
906 files from the associated perl scripts.
909 *) Implement remaining functionality needed to support GOST ciphersuites.
910 Interop testing has been performed using CryptoPro implementations.
911 [Victor B. Wagner <vitus@cryptocom.ru>]
913 *) s390x assembler pack.
916 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
920 *) Implement Opaque PRF Input TLS extension as specified in
921 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
922 official specification yet and no extension type assignment by
923 IANA exists, this extension (for now) will have to be explicitly
924 enabled when building OpenSSL by providing the extension number
925 to use. For example, specify an option
927 -DTLSEXT_TYPE_opaque_prf_input=0x9527
929 to the "config" or "Configure" script to enable the extension,
930 assuming extension number 0x9527 (which is a completely arbitrary
931 and unofficial assignment based on the MD5 hash of the Internet
932 Draft). Note that by doing so, you potentially lose
933 interoperability with other TLS implementations since these might
934 be using the same extension number for other purposes.
936 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
937 opaque PRF input value to use in the handshake. This will create
938 an interal copy of the length-'len' string at 'src', and will
939 return non-zero for success.
941 To get more control and flexibility, provide a callback function
944 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
945 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
949 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
952 Callback function 'cb' will be called in handshakes, and is
953 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
954 Argument 'arg' is for application purposes (the value as given to
955 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
956 be provided to the callback function). The callback function
957 has to return non-zero to report success: usually 1 to use opaque
958 PRF input just if possible, or 2 to enforce use of the opaque PRF
959 input. In the latter case, the library will abort the handshake
960 if opaque PRF input is not successfully negotiated.
962 Arguments 'peerinput' and 'len' given to the callback function
963 will always be NULL and 0 in the case of a client. A server will
964 see the client's opaque PRF input through these variables if
965 available (NULL and 0 otherwise). Note that if the server
966 provides an opaque PRF input, the length must be the same as the
967 length of the client's opaque PRF input.
969 Note that the callback function will only be called when creating
970 a new session (session resumption can resume whatever was
971 previously negotiated), and will not be called in SSL 2.0
972 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
973 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
974 for applications that need to enforce opaque PRF input.
978 *) Update ssl code to support digests other than SHA1+MD5 for handshake
981 [Victor B. Wagner <vitus@cryptocom.ru>]
983 *) Add RFC4507 support to OpenSSL. This includes the corrections in
984 RFC4507bis. The encrypted ticket format is an encrypted encoded
985 SSL_SESSION structure, that way new session features are automatically
988 If a client application caches session in an SSL_SESSION structure
989 support is transparent because tickets are now stored in the encoded
992 The SSL_CTX structure automatically generates keys for ticket
993 protection in servers so again support should be possible
994 with no application modification.
996 If a client or server wishes to disable RFC4507 support then the option
997 SSL_OP_NO_TICKET can be set.
999 Add a TLS extension debugging callback to allow the contents of any client
1000 or server extensions to be examined.
1002 This work was sponsored by Google.
1005 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1006 OpenSSL should now compile cleanly on gcc 4.2
1007 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1009 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1010 support including streaming MAC support: this is required for GOST
1011 ciphersuite support.
1012 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1014 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1015 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1016 to output in BER and PEM format.
1019 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1020 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1021 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1022 ENGINE support for HMAC keys which are unextractable. New -mac and
1023 -macopt options to dgst utility.
1026 *) New option -sigopt to dgst utility. Update dgst to use
1027 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1028 alternative signing paramaters such as X9.31 or PSS in the dgst
1032 *) Change ssl_cipher_apply_rule(), the internal function that does
1033 the work each time a ciphersuite string requests enabling
1034 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1035 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1036 the order of disabled ciphersuites such that those ciphersuites
1037 that most recently went from enabled to disabled not only stay
1038 in order with respect to each other, but also have higher priority
1039 than other disabled ciphersuites the next time ciphersuites are
1042 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1043 the same ciphersuites as with "HIGH" alone, but in a specific
1044 order where the PSK ciphersuites come first (since they are the
1045 most recently disabled ciphersuites when "HIGH" is parsed).
1047 Also, change ssl_create_cipher_list() (using this new
1048 funcionality) such that between otherwise identical
1049 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1053 *) Change ssl_create_cipher_list() so that it automatically
1054 arranges the ciphersuites in reasonable order before starting
1055 to process the rule string. Thus, the definition for "DEFAULT"
1056 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1057 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1058 This makes it much easier to arrive at a reasonable default order
1059 in applications for which anonymous ciphers are OK (meaning
1060 that you can't actually use DEFAULT).
1061 [Bodo Moeller; suggested by Victor Duchovni]
1063 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1064 processing) into multiple integers instead of setting
1065 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1066 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1067 (These masks as well as the individual bit definitions are hidden
1068 away into the non-exported interface ssl/ssl_locl.h, so this
1069 change to the definition of the SSL_CIPHER structure shouldn't
1070 affect applications.) This give us more bits for each of these
1071 categories, so there is no longer a need to coagulate AES128 and
1072 AES256 into a single algorithm bit, and to coagulate Camellia128
1073 and Camellia256 into a single algorithm bit, which has led to all
1076 Thus, among other things, the kludge introduced in 0.9.7m and
1077 0.9.8e for masking out AES256 independently of AES128 or masking
1078 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1080 With the change, we also introduce new ciphersuite aliases that
1081 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1085 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1086 Use the leftmost N bytes of the signature input if the input is
1087 larger than the prime q (with N being the size in bytes of q).
1090 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1091 it yet and it is largely untested.
1094 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1097 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1098 some compilers (gcc 4.2 and later) reject their use. Safestack is
1099 reimplemented. Update ASN1 to avoid use of legacy functions.
1102 *) Win32/64 targets are linked with Winsock2.
1105 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1106 to external functions. This can be used to increase CRL handling
1107 efficiency especially when CRLs are very large by (for example) storing
1108 the CRL revoked certificates in a database.
1111 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1112 new CRLs added to a directory can be used. New command line option
1113 -verify_return_error to s_client and s_server. This causes real errors
1114 to be returned by the verify callback instead of carrying on no matter
1115 what. This reflects the way a "real world" verify callback would behave.
1118 *) GOST engine, supporting several GOST algorithms and public key formats.
1119 Kindly donated by Cryptocom.
1122 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1123 partitioned by DP are handled but no indirect CRL or reason partitioning
1124 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1125 selected via a scoring technique which handles IDP and AKID in CRLs.
1128 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1129 will ultimately be used for all verify operations: this will remove the
1130 X509_STORE dependency on certificate verification and allow alternative
1131 lookup methods. X509_STORE based implementations of these two callbacks.
1134 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1135 Modify get_crl() to find a valid (unexpired) CRL if possible.
1138 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1139 this would be called X509_CRL_cmp() but that name is already used by
1140 a function that just compares CRL issuer names. Cache several CRL
1141 extensions in X509_CRL structure and cache CRLDP in X509.
1144 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1145 this maps equivalent X509_NAME structures into a consistent structure.
1146 Name comparison can then be performed rapidly using memcmp().
1149 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1153 *) Allow digests to supply their own micalg string for S/MIME type using
1154 the ctrl EVP_MD_CTRL_MICALG.
1157 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1158 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1159 ctrl. It can then customise the structure before and/or after signing
1163 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1164 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1165 to free up any added signature OIDs.
1168 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1169 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1170 digest and cipher tables. New options added to openssl utility:
1171 list-message-digest-algorithms and list-cipher-algorithms.
1174 *) Change the array representation of binary polynomials: the list
1175 of degrees of non-zero coefficients is now terminated with -1.
1176 Previously it was terminated with 0, which was also part of the
1177 value; thus, the array representation was not applicable to
1178 polynomials where t^0 has coefficient zero. This change makes
1179 the array representation useful in a more general context.
1182 *) Various modifications and fixes to SSL/TLS cipher string
1183 handling. For ECC, the code now distinguishes between fixed ECDH
1184 with RSA certificates on the one hand and with ECDSA certificates
1185 on the other hand, since these are separate ciphersuites. The
1186 unused code for Fortezza ciphersuites has been removed.
1188 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1189 (not "ECDHE"). For consistency with the code for DH
1190 certificates, use of ECDH certificates is now considered ECDH
1191 authentication, not RSA or ECDSA authentication (the latter is
1192 merely the CA's signing algorithm and not actively used in the
1195 The temporary ciphersuite alias "ECCdraft" is no longer
1196 available, and ECC ciphersuites are no longer excluded from "ALL"
1197 and "DEFAULT". The following aliases now exist for RFC 4492
1198 ciphersuites, most of these by analogy with the DH case:
1200 kECDHr - ECDH cert, signed with RSA
1201 kECDHe - ECDH cert, signed with ECDSA
1202 kECDH - ECDH cert (signed with either RSA or ECDSA)
1203 kEECDH - ephemeral ECDH
1204 ECDH - ECDH cert or ephemeral ECDH
1210 AECDH - anonymous ECDH
1211 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1215 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1216 Use correct micalg parameters depending on digest(s) in signed message.
1219 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1220 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1223 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1224 an engine to register a method. Add ENGINE lookups for methods and
1225 functional reference processing.
1228 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1229 EVP_{Sign,Verify}* which allow an application to customise the signature
1233 *) New -resign option to smime utility. This adds one or more signers
1234 to an existing PKCS#7 signedData structure. Also -md option to use an
1235 alternative message digest algorithm for signing.
1238 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1239 create PKCS7 structures containing multiple signers. Update smime
1240 application to support multiple signers.
1243 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1247 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1248 Reorganize PBE internals to lookup from a static table using NIDs,
1249 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1250 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1251 PRF which will be automatically used with PBES2.
1254 *) Replace the algorithm specific calls to generate keys in "req" with the
1258 *) Update PKCS#7 enveloped data routines to use new API. This is now
1259 supported by any public key method supporting the encrypt operation. A
1260 ctrl is added to allow the public key algorithm to examine or modify
1261 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1265 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1266 a default digest type to use. In most cases this will be SHA1 but some
1267 algorithms (such as GOST) need to specify an alternative digest. The
1268 return value indicates how strong the prefernce is 1 means optional and
1269 2 is mandatory (that is it is the only supported type). Modify
1270 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1271 use the default md. Update openssl utilities to use the default digest
1272 type for signing if it is not explicitly indicated.
1275 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1276 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1277 signing method from the key type. This effectively removes the link
1278 between digests and public key types.
1281 *) Add an OID cross reference table and utility functions. Its purpose is to
1282 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1283 rsaEncryption. This will allow some of the algorithm specific hackery
1284 needed to use the correct OID to be removed.
1287 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1288 structures for PKCS7_sign(). They are now set up by the relevant public
1292 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1295 *) Add support for key derivation (agreement) in the API, DH method and
1299 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1300 public and private key formats. As a side effect these add additional
1301 command line functionality not previously available: DSA signatures can be
1302 generated and verified using pkeyutl and DH key support and generation in
1307 [Oliver Tappe <zooey@hirschkaefer.de>]
1309 *) New make target "install_html_docs" installs HTML renditions of the
1311 [Oliver Tappe <zooey@hirschkaefer.de>]
1313 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1314 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1315 support key and parameter generation and add initial key generation
1316 functionality for RSA.
1319 *) Add functions for main EVP_PKEY_method operations. The undocumented
1320 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1321 EVP_PKEY_{encrypt,decrypt}_old.
1324 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1325 key API, doesn't do much yet.
1328 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1329 public key algorithms. New option to openssl utility:
1330 "list-public-key-algorithms" to print out info.
1333 *) Implement the Supported Elliptic Curves Extension for
1334 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1337 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1338 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1341 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1342 utilities such as rsa, dsa, dsaparam etc except they process any key
1346 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1347 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1348 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1352 *) Initial support for pluggable public key ASN1.
1353 De-spaghettify the public key ASN1 handling. Move public and private
1354 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1355 algorithm specific handling to a single module within the relevant
1356 algorithm directory. Add functions to allow (near) opaque processing
1357 of public and private key structures.
1360 *) Implement the Supported Point Formats Extension for
1361 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1364 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1365 for the psk identity [hint] and the psk callback functions to the
1366 SSL_SESSION, SSL and SSL_CTX structure.
1369 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1373 SSL_CTX_use_psk_identity_hint
1374 SSL_get_psk_identity_hint
1375 SSL_get_psk_identity
1376 SSL_use_psk_identity_hint
1378 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1380 *) Add RFC 3161 compliant time stamp request creation, response generation
1381 and response verification functionality.
1382 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1384 *) Add initial support for TLS extensions, specifically for the server_name
1385 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1386 have new members for a host name. The SSL data structure has an
1387 additional member SSL_CTX *initial_ctx so that new sessions can be
1388 stored in that context to allow for session resumption, even after the
1389 SSL has been switched to a new SSL_CTX in reaction to a client's
1390 server_name extension.
1392 New functions (subject to change):
1394 SSL_get_servername()
1395 SSL_get_servername_type()
1398 New CTRL codes and macros (subject to change):
1400 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1401 - SSL_CTX_set_tlsext_servername_callback()
1402 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1403 - SSL_CTX_set_tlsext_servername_arg()
1404 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1406 openssl s_client has a new '-servername ...' option.
1408 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1409 '-key2 ...', '-servername_fatal' (subject to change). This allows
1410 testing the HostName extension for a specific single host name ('-cert'
1411 and '-key' remain fallbacks for handshakes without HostName
1412 negotiation). If the unrecogninzed_name alert has to be sent, this by
1413 default is a warning; it becomes fatal with the '-servername_fatal'
1416 [Peter Sylvester, Remy Allais, Christophe Renou]
1418 *) Whirlpool hash implementation is added.
1421 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1422 bn(64,32). Because of instruction set limitations it doesn't have
1423 any negative impact on performance. This was done mostly in order
1424 to make it possible to share assembler modules, such as bn_mul_mont
1425 implementations, between 32- and 64-bit builds without hassle.
1428 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1429 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1433 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1434 dedicated Montgomery multiplication procedure, is introduced.
1435 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1436 "64-bit" performance on certain 32-bit targets.
1439 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1440 in SSL structures. New SSL ctrl to set maximum send fragment size.
1441 Save memory by seeting the I/O buffer sizes dynamically instead of
1442 using the maximum available value.
1445 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1446 in addition to the text details.
1449 *) Very, very preliminary EXPERIMENTAL support for printing of general
1450 ASN1 structures. This currently produces rather ugly output and doesn't
1451 handle several customised structures at all.
1454 *) Integrated support for PVK file format and some related formats such
1455 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1456 these in the 'rsa' and 'dsa' utilities.
1459 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1462 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1463 place for the (very old) "NETSCAPE" format certificates which are now
1464 handled using new ASN1 code equivalents.
1467 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1468 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1469 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1472 *) Modify CRL distribution points extension code to print out previously
1473 unsupported fields. Enhance extension setting code to allow setting of
1477 *) Add print and set support for Issuing Distribution Point CRL extension.
1480 *) Change 'Configure' script to enable Camellia by default.
1483 Changes between 0.9.8r and 0.9.8s [xx XXX xxxx]
1485 *) Fix ssl_ciph.c set-up race.
1486 [Adam Langley (Google)]
1488 *) Fix spurious failures in ecdsatest.c.
1489 [Emilia Käsper (Google)]
1491 *) Fix the BIO_f_buffer() implementation (which was mixing different
1492 interpretations of the '..._len' fields).
1493 [Adam Langley (Google)]
1495 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1496 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1497 threads won't reuse the same blinding coefficients.
1499 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1500 lock to call BN_BLINDING_invert_ex, and avoids one use of
1501 BN_BLINDING_update for each BN_BLINDING structure (previously,
1502 the last update always remained unused).
1503 [Emilia Käsper (Google)]
1505 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1506 for multi-threaded use of ECDH.
1507 [Adam Langley (Google)]
1509 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1512 *) Add protection against ECDSA timing attacks as mentioned in the paper
1513 by Billy Bob Brumley and Nicola Tuveri, see:
1515 http://eprint.iacr.org/2011/232.pdf
1517 [Billy Bob Brumley and Nicola Tuveri]
1519 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1521 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1522 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1524 *) Fix bug in string printing code: if *any* escaping is enabled we must
1525 escape the escape character (backslash) or the resulting string is
1529 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1531 *) Disable code workaround for ancient and obsolete Netscape browsers
1532 and servers: an attacker can use it in a ciphersuite downgrade attack.
1533 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1536 *) Fixed J-PAKE implementation error, originally discovered by
1537 Sebastien Martini, further info and confirmation from Stefan
1538 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1541 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1543 *) Fix extension code to avoid race conditions which can result in a buffer
1544 overrun vulnerability: resumed sessions must not be modified as they can
1545 be shared by multiple threads. CVE-2010-3864
1548 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1551 *) Don't reencode certificate when calculating signature: cache and use
1552 the original encoding instead. This makes signature verification of
1553 some broken encodings work correctly.
1556 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1557 is also one of the inputs.
1558 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1560 *) Don't repeatedly append PBE algorithms to table if they already exist.
1561 Sort table on each new add. This effectively makes the table read only
1562 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1566 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1568 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1571 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1572 access or freeing data twice (CVE-2010-0742)
1573 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1575 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1576 common in certificates and some applications which only call
1577 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1581 Reduce copying into .apps and .test in makevms.com
1582 Don't try to use blank CA certificate in CA.com
1583 Allow use of C files from original directories in maketests.com
1584 [Steven M. Schweda" <sms@antinode.info>]
1586 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1588 *) When rejecting SSL/TLS records due to an incorrect version number, never
1589 update s->server with a new major version number. As of
1590 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1591 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1592 the previous behavior could result in a read attempt at NULL when
1593 receiving specific incorrect SSL/TLS records once record payload
1594 protection is active. (CVE-2010-0740)
1595 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1597 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1598 could be crashed if the relevant tables were not present (e.g. chrooted).
1599 [Tomas Hoger <thoger@redhat.com>]
1601 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1603 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1604 [Martin Olsson, Neel Mehta]
1606 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1607 accommodate for stack sorting, always a write lock!).
1610 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1611 excessive delays in the RAND_poll(): over a minute. As a workaround
1612 include a time check in the inner Heap32Next loop too.
1615 *) The code that handled flushing of data in SSL/TLS originally used the
1616 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1617 the problem outlined in PR#1949. The fix suggested there however can
1618 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1619 of Apache). So instead simplify the code to flush unconditionally.
1620 This should be fine since flushing with no data to flush is a no op.
1623 *) Handle TLS versions 2.0 and later properly and correctly use the
1624 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1625 off ancient servers have a habit of sticking around for a while...
1628 *) Modify compression code so it frees up structures without using the
1629 ex_data callbacks. This works around a problem where some applications
1630 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1631 restarting) then use compression (e.g. SSL with compression) later.
1632 This results in significant per-connection memory leaks and
1633 has caused some security issues including CVE-2008-1678 and
1637 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1638 change when encrypting or decrypting.
1641 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1642 connect and renegotiate with servers which do not support RI.
1643 Until RI is more widely deployed this option is enabled by default.
1646 *) Add "missing" ssl ctrls to clear options and mode.
1649 *) If client attempts to renegotiate and doesn't support RI respond with
1650 a no_renegotiation alert as required by RFC5746. Some renegotiating
1651 TLS clients will continue a connection gracefully when they receive
1652 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1653 waiting for a server hello which it will never receive. Now we treat a
1654 received no_renegotiation alert as a fatal error. This is because
1655 applications requesting a renegotiation might well expect it to succeed
1656 and would have no code in place to handle the server denying it so the
1657 only safe thing to do is to terminate the connection.
1660 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1661 peer supports secure renegotiation and 0 otherwise. Print out peer
1662 renegotiation support in s_client/s_server.
1665 *) Replace the highly broken and deprecated SPKAC certification method with
1666 the updated NID creation version. This should correctly handle UTF8.
1669 *) Implement RFC5746. Re-enable renegotiation but require the extension
1670 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1671 turns out to be a bad idea. It has been replaced by
1672 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1673 SSL_CTX_set_options(). This is really not recommended unless you
1674 know what you are doing.
1675 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1677 *) Fixes to stateless session resumption handling. Use initial_ctx when
1678 issuing and attempting to decrypt tickets in case it has changed during
1679 servername handling. Use a non-zero length session ID when attempting
1680 stateless session resumption: this makes it possible to determine if
1681 a resumption has occurred immediately after receiving server hello
1682 (several places in OpenSSL subtly assume this) instead of later in
1686 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1687 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1688 fixes for a few places where the return code is not checked
1690 [Julia Lawall <julia@diku.dk>]
1692 *) Add --strict-warnings option to Configure script to include devteam
1693 warnings in other configurations.
1696 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1697 makes it possible to install openssl libraries in locations which
1698 have names other than "lib", for example "/usr/lib64" which some
1700 [Steve Henson, based on patch from Jeremy Utley]
1702 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1703 X690 8.9.12 and can produce some misleading textual output of OIDs.
1704 [Steve Henson, reported by Dan Kaminsky]
1706 *) Delete MD2 from algorithm tables. This follows the recommendation in
1707 several standards that it is not used in new applications due to
1708 several cryptographic weaknesses. For binary compatibility reasons
1709 the MD2 API is still compiled in by default.
1712 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1716 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1717 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1719 [Guenter <lists@gknw.net>]
1721 *) Fix the server certificate chain building code to use X509_verify_cert(),
1722 it used to have an ad-hoc builder which was unable to cope with anything
1723 other than a simple chain.
1724 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1726 *) Don't check self signed certificate signatures in X509_verify_cert()
1727 by default (a flag can override this): it just wastes time without
1728 adding any security. As a useful side effect self signed root CAs
1729 with non-FIPS digests are now usable in FIPS mode.
1732 *) In dtls1_process_out_of_seq_message() the check if the current message
1733 is already buffered was missing. For every new message was memory
1734 allocated, allowing an attacker to perform an denial of service attack
1735 with sending out of seq handshake messages until there is no memory
1736 left. Additionally every future messege was buffered, even if the
1737 sequence number made no sense and would be part of another handshake.
1738 So only messages with sequence numbers less than 10 in advance will be
1739 buffered. (CVE-2009-1378)
1740 [Robin Seggelmann, discovered by Daniel Mentz]
1742 *) Records are buffered if they arrive with a future epoch to be
1743 processed after finishing the corresponding handshake. There is
1744 currently no limitation to this buffer allowing an attacker to perform
1745 a DOS attack with sending records with future epochs until there is no
1746 memory left. This patch adds the pqueue_size() function to detemine
1747 the size of a buffer and limits the record buffer to 100 entries.
1749 [Robin Seggelmann, discovered by Daniel Mentz]
1751 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1752 parent structure is freed. (CVE-2009-1379)
1755 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1756 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1759 [Ilya O. <vrghost@gmail.com>]
1761 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1763 *) Disable renegotiation completely - this fixes a severe security
1764 problem (CVE-2009-3555) at the cost of breaking all
1765 renegotiation. Renegotiation can be re-enabled by setting
1766 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1767 run-time. This is really not recommended unless you know what
1771 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1773 *) Don't set val to NULL when freeing up structures, it is freed up by
1774 underlying code. If sizeof(void *) > sizeof(long) this can result in
1775 zeroing past the valid field. (CVE-2009-0789)
1776 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1778 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1779 checked correctly. This would allow some invalid signed attributes to
1780 appear to verify correctly. (CVE-2009-0591)
1781 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1783 *) Reject UniversalString and BMPString types with invalid lengths. This
1784 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1785 a legal length. (CVE-2009-0590)
1788 *) Set S/MIME signing as the default purpose rather than setting it
1789 unconditionally. This allows applications to override it at the store
1793 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1794 to handle some structures.
1797 *) Improve efficiency of mem_gets: don't search whole buffer each time
1799 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1801 *) New -hex option for openssl rand.
1804 *) Print out UTF8String and NumericString when parsing ASN1.
1807 *) Support NumericString type for name components.
1810 *) Allow CC in the environment to override the automatically chosen
1811 compiler. Note that nothing is done to ensure flags work with the
1815 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1817 *) Properly check EVP_VerifyFinal() and similar return values
1819 [Ben Laurie, Bodo Moeller, Google Security Team]
1821 *) Enable TLS extensions by default.
1824 *) Allow the CHIL engine to be loaded, whether the application is
1825 multithreaded or not. (This does not release the developer from the
1826 obligation to set up the dynamic locking callbacks.)
1827 [Sander Temme <sander@temme.net>]
1829 *) Use correct exit code if there is an error in dgst command.
1830 [Steve Henson; problem pointed out by Roland Dirlewanger]
1832 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1833 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1836 *) Add experimental JPAKE support, including demo authentication in
1837 s_client and s_server.
1840 *) Set the comparison function in v3_addr_canonize().
1841 [Rob Austein <sra@hactrn.net>]
1843 *) Add support for XMPP STARTTLS in s_client.
1844 [Philip Paeps <philip@freebsd.org>]
1846 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1847 to ensure that even with this option, only ciphersuites in the
1848 server's preference list will be accepted. (Note that the option
1849 applies only when resuming a session, so the earlier behavior was
1850 just about the algorithm choice for symmetric cryptography.)
1853 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1855 *) Fix NULL pointer dereference if a DTLS server received
1856 ChangeCipherSpec as first record (CVE-2009-1386).
1859 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1860 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1863 *) The fix in 0.9.8c that supposedly got rid of unsafe
1864 double-checked locking was incomplete for RSA blinding,
1865 addressing just one layer of what turns out to have been
1866 doubly unsafe triple-checked locking.
1868 So now fix this for real by retiring the MONT_HELPER macro
1869 in crypto/rsa/rsa_eay.c.
1871 [Bodo Moeller; problem pointed out by Marius Schilder]
1873 *) Various precautionary measures:
1875 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1877 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1878 (NB: This would require knowledge of the secret session ticket key
1879 to exploit, in which case you'd be SOL either way.)
1881 - Change bn_nist.c so that it will properly handle input BIGNUMs
1882 outside the expected range.
1884 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1887 [Neel Mehta, Bodo Moeller]
1889 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1890 the load fails. Useful for distros.
1891 [Ben Laurie and the FreeBSD team]
1893 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1896 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1899 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1901 This work was sponsored by Logica.
1904 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1905 keystores. Support for SSL/TLS client authentication too.
1906 Not compiled unless enable-capieng specified to Configure.
1908 This work was sponsored by Logica.
1911 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1912 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1913 attribute creation routines such as certifcate requests and PKCS#12
1917 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1919 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1920 handshake which could lead to a cilent crash as found using the
1921 Codenomicon TLS test suite (CVE-2008-1672)
1922 [Steve Henson, Mark Cox]
1924 *) Fix double free in TLS server name extensions which could lead to
1925 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1928 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1930 Clear the error queue to ensure that error entries left from
1931 older function calls do not interfere with the correct operation.
1932 [Lutz Jaenicke, Erik de Castro Lopo]
1934 *) Remove root CA certificates of commercial CAs:
1936 The OpenSSL project does not recommend any specific CA and does not
1937 have any policy with respect to including or excluding any CA.
1938 Therefore it does not make any sense to ship an arbitrary selection
1939 of root CA certificates with the OpenSSL software.
1942 *) RSA OAEP patches to fix two separate invalid memory reads.
1943 The first one involves inputs when 'lzero' is greater than
1944 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1945 before the beginning of from). The second one involves inputs where
1946 the 'db' section contains nothing but zeroes (there is a one-byte
1947 invalid read after the end of 'db').
1948 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1950 *) Partial backport from 0.9.9-dev:
1952 Introduce bn_mul_mont (dedicated Montgomery multiplication
1953 procedure) as a candidate for BIGNUM assembler implementation.
1954 While 0.9.9-dev uses assembler for various architectures, only
1955 x86_64 is available by default here in the 0.9.8 branch, and
1956 32-bit x86 is available through a compile-time setting.
1958 To try the 32-bit x86 assembler implementation, use Configure
1959 option "enable-montasm" (which exists only for this backport).
1961 As "enable-montasm" for 32-bit x86 disclaims code stability
1962 anyway, in this constellation we activate additional code
1963 backported from 0.9.9-dev for further performance improvements,
1964 namely BN_from_montgomery_word. (To enable this otherwise,
1965 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1967 [Andy Polyakov (backport partially by Bodo Moeller)]
1969 *) Add TLS session ticket callback. This allows an application to set
1970 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1971 values. This is useful for key rollover for example where several key
1972 sets may exist with different names.
1975 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1976 This was broken until now in 0.9.8 releases, such that the only way
1977 a registered ENGINE could be used (assuming it initialises
1978 successfully on the host) was to explicitly set it as the default
1979 for the relevant algorithms. This is in contradiction with 0.9.7
1980 behaviour and the documentation. With this fix, when an ENGINE is
1981 registered into a given algorithm's table of implementations, the
1982 'uptodate' flag is reset so that auto-discovery will be used next
1983 time a new context for that algorithm attempts to select an
1985 [Ian Lister (tweaked by Geoff Thorpe)]
1987 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1988 implemention in the following ways:
1990 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1993 Lack of BER streaming support means one pass streaming processing is
1994 only supported if data is detached: setting the streaming flag is
1995 ignored for embedded content.
1997 CMS support is disabled by default and must be explicitly enabled
1998 with the enable-cms configuration option.
2001 *) Update the GMP engine glue to do direct copies between BIGNUM and
2002 mpz_t when openssl and GMP use the same limb size. Otherwise the
2003 existing "conversion via a text string export" trick is still used.
2004 [Paul Sheer <paulsheer@gmail.com>]
2006 *) Zlib compression BIO. This is a filter BIO which compressed and
2007 uncompresses any data passed through it.
2010 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2011 RFC3394 compatible AES key wrapping.
2014 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2015 sets string data without copying. X509_ALGOR_set0() and
2016 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2017 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2018 from an X509_ATTRIBUTE structure optionally checking it occurs only
2019 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2023 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2024 to get the expected BN_FLG_CONSTTIME behavior.
2025 [Bodo Moeller (Google)]
2029 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2030 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2031 - added some more tests to do_tests.pl
2032 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2033 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2034 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2035 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2036 - various changes to netware.pl to enable gcc-cross builds on Win32
2038 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2039 - various changes to fix missing prototype warnings
2040 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2041 - added AES, WHIRLPOOL and CPUID assembler code to build files
2042 - added missing AES assembler make rules to mk1mf.pl
2043 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2044 [Guenter Knauf <eflash@gmx.net>]
2046 *) Implement certificate status request TLS extension defined in RFC3546.
2047 A client can set the appropriate parameters and receive the encoded
2048 OCSP response via a callback. A server can query the supplied parameters
2049 and set the encoded OCSP response in the callback. Add simplified examples
2050 to s_client and s_server.
2053 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2055 *) Fix various bugs:
2056 + Binary incompatibility of ssl_ctx_st structure
2057 + DTLS interoperation with non-compliant servers
2058 + Don't call get_session_cb() without proposed session
2059 + Fix ia64 assembler code
2060 [Andy Polyakov, Steve Henson]
2062 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2064 *) DTLS Handshake overhaul. There were longstanding issues with
2065 OpenSSL DTLS implementation, which were making it impossible for
2066 RFC 4347 compliant client to communicate with OpenSSL server.
2067 Unfortunately just fixing these incompatibilities would "cut off"
2068 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2069 server keeps tolerating non RFC compliant syntax. The opposite is
2070 not true, 0.9.8f client can not communicate with earlier server.
2071 This update even addresses CVE-2007-4995.
2074 *) Changes to avoid need for function casts in OpenSSL: some compilers
2075 (gcc 4.2 and later) reject their use.
2076 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2079 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2080 RFC4507bis. The encrypted ticket format is an encrypted encoded
2081 SSL_SESSION structure, that way new session features are automatically
2084 If a client application caches session in an SSL_SESSION structure
2085 support is transparent because tickets are now stored in the encoded
2088 The SSL_CTX structure automatically generates keys for ticket
2089 protection in servers so again support should be possible
2090 with no application modification.
2092 If a client or server wishes to disable RFC4507 support then the option
2093 SSL_OP_NO_TICKET can be set.
2095 Add a TLS extension debugging callback to allow the contents of any client
2096 or server extensions to be examined.
2098 This work was sponsored by Google.
2101 *) Add initial support for TLS extensions, specifically for the server_name
2102 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2103 have new members for a host name. The SSL data structure has an
2104 additional member SSL_CTX *initial_ctx so that new sessions can be
2105 stored in that context to allow for session resumption, even after the
2106 SSL has been switched to a new SSL_CTX in reaction to a client's
2107 server_name extension.
2109 New functions (subject to change):
2111 SSL_get_servername()
2112 SSL_get_servername_type()
2115 New CTRL codes and macros (subject to change):
2117 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2118 - SSL_CTX_set_tlsext_servername_callback()
2119 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2120 - SSL_CTX_set_tlsext_servername_arg()
2121 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2123 openssl s_client has a new '-servername ...' option.
2125 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2126 '-key2 ...', '-servername_fatal' (subject to change). This allows
2127 testing the HostName extension for a specific single host name ('-cert'
2128 and '-key' remain fallbacks for handshakes without HostName
2129 negotiation). If the unrecogninzed_name alert has to be sent, this by
2130 default is a warning; it becomes fatal with the '-servername_fatal'
2133 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2135 *) Add AES and SSE2 assembly language support to VC++ build.
2138 *) Mitigate attack on final subtraction in Montgomery reduction.
2141 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2142 (which previously caused an internal error).
2145 *) Squeeze another 10% out of IGE mode when in != out.
2148 *) AES IGE mode speedup.
2149 [Dean Gaudet (Google)]
2151 *) Add the Korean symmetric 128-bit cipher SEED (see
2152 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2153 add SEED ciphersuites from RFC 4162:
2155 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2156 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2157 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2158 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2160 To minimize changes between patchlevels in the OpenSSL 0.9.8
2161 series, SEED remains excluded from compilation unless OpenSSL
2162 is configured with 'enable-seed'.
2163 [KISA, Bodo Moeller]
2165 *) Mitigate branch prediction attacks, which can be practical if a
2166 single processor is shared, allowing a spy process to extract
2167 information. For detailed background information, see
2168 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2169 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2170 and Necessary Software Countermeasures"). The core of the change
2171 are new versions BN_div_no_branch() and
2172 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2173 respectively, which are slower, but avoid the security-relevant
2174 conditional branches. These are automatically called by BN_div()
2175 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2176 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2177 remove a conditional branch.
2179 BN_FLG_CONSTTIME is the new name for the previous
2180 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2181 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2182 in the exponent causes BN_mod_exp_mont() to use the alternative
2183 implementation in BN_mod_exp_mont_consttime().) The old name
2184 remains as a deprecated alias.
2186 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2187 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2188 constant-time implementations for more than just exponentiation.
2189 Here too the old name is kept as a deprecated alias.
2191 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2192 the BN_BLINDING structure gets an independent copy of the
2193 modulus. This means that the previous "BIGNUM *m" argument to
2194 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2195 essentially becomes "const BIGNUM *m", although we can't actually
2196 change this in the header file before 0.9.9. It allows
2197 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2198 enable BN_FLG_CONSTTIME.
2200 [Matthew D Wood (Intel Corp)]
2202 *) In the SSL/TLS server implementation, be strict about session ID
2203 context matching (which matters if an application uses a single
2204 external cache for different purposes). Previously,
2205 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2206 set. This did ensure strict client verification, but meant that,
2207 with applications using a single external cache for quite
2208 different requirements, clients could circumvent ciphersuite
2209 restrictions for a given session ID context by starting a session
2210 in a different context.
2213 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2214 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2215 authentication-only ciphersuites.
2218 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2219 not complete and could lead to a possible single byte overflow
2220 (CVE-2007-5135) [Ben Laurie]
2222 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2224 *) Since AES128 and AES256 (and similarly Camellia128 and
2225 Camellia256) share a single mask bit in the logic of
2226 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2227 kludge to work properly if AES128 is available and AES256 isn't
2228 (or if Camellia128 is available and Camellia256 isn't).
2231 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2232 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2233 When a point or a seed is encoded in a BIT STRING, we need to
2234 prevent the removal of trailing zero bits to get the proper DER
2235 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2236 of a NamedBitList, for which trailing 0 bits need to be removed.)
2239 *) Have SSL/TLS server implementation tolerate "mismatched" record
2240 protocol version while receiving ClientHello even if the
2241 ClientHello is fragmented. (The server can't insist on the
2242 particular protocol version it has chosen before the ServerHello
2243 message has informed the client about his choice.)
2246 *) Add RFC 3779 support.
2247 [Rob Austein for ARIN, Ben Laurie]
2249 *) Load error codes if they are not already present instead of using a
2250 static variable. This allows them to be cleanly unloaded and reloaded.
2251 Improve header file function name parsing.
2254 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2255 or CAPABILITY handshake as required by RFCs.
2258 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2260 *) Introduce limits to prevent malicious keys being able to
2261 cause a denial of service. (CVE-2006-2940)
2262 [Steve Henson, Bodo Moeller]
2264 *) Fix ASN.1 parsing of certain invalid structures that can result
2265 in a denial of service. (CVE-2006-2937) [Steve Henson]
2267 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2268 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2270 *) Fix SSL client code which could crash if connecting to a
2271 malicious SSLv2 server. (CVE-2006-4343)
2272 [Tavis Ormandy and Will Drewry, Google Security Team]
2274 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2275 match only those. Before that, "AES256-SHA" would be interpreted
2276 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2277 the same strength classification in 0.9.7h) as we currently only
2278 have a single AES bit in the ciphersuite description bitmap.
2279 That change, however, also applied to ciphersuite strings such as
2280 "RC4-MD5" that intentionally matched multiple ciphersuites --
2281 namely, SSL 2.0 ciphersuites in addition to the more common ones
2282 from SSL 3.0/TLS 1.0.
2284 So we change the selection algorithm again: Naming an explicit
2285 ciphersuite selects this one ciphersuite, and any other similar
2286 ciphersuite (same bitmap) from *other* protocol versions.
2287 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2288 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2290 Since SSL 2.0 does not have any ciphersuites for which the
2291 128/256 bit distinction would be relevant, this works for now.
2292 The proper fix will be to use different bits for AES128 and
2293 AES256, which would have avoided the problems from the beginning;
2294 however, bits are scarce, so we can only do this in a new release
2295 (not just a patchlevel) when we can change the SSL_CIPHER
2296 definition to split the single 'unsigned long mask' bitmap into
2297 multiple values to extend the available space.
2301 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2303 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2304 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2306 *) Add AES IGE and biIGE modes.
2309 *) Change the Unix randomness entropy gathering to use poll() when
2310 possible instead of select(), since the latter has some
2311 undesirable limitations.
2312 [Darryl Miles via Richard Levitte and Bodo Moeller]
2314 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2315 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2316 cannot be implicitly activated as part of, e.g., the "AES" alias.
2317 However, please upgrade to OpenSSL 0.9.9[-dev] for
2318 non-experimental use of the ECC ciphersuites to get TLS extension
2319 support, which is required for curve and point format negotiation
2320 to avoid potential handshake problems.
2323 *) Disable rogue ciphersuites:
2325 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2326 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2327 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2329 The latter two were purportedly from
2330 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2333 Also deactivate the remaining ciphersuites from
2334 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2335 unofficial, and the ID has long expired.
2338 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2339 dual-core machines) and other potential thread-safety issues.
2342 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2343 versions), which is now available for royalty-free use
2344 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2345 Also, add Camellia TLS ciphersuites from RFC 4132.
2347 To minimize changes between patchlevels in the OpenSSL 0.9.8
2348 series, Camellia remains excluded from compilation unless OpenSSL
2349 is configured with 'enable-camellia'.
2352 *) Disable the padding bug check when compression is in use. The padding
2353 bug check assumes the first packet is of even length, this is not
2354 necessarily true if compresssion is enabled and can result in false
2355 positives causing handshake failure. The actual bug test is ancient
2356 code so it is hoped that implementations will either have fixed it by
2357 now or any which still have the bug do not support compression.
2360 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2362 *) When applying a cipher rule check to see if string match is an explicit
2363 cipher suite and only match that one cipher suite if it is.
2366 *) Link in manifests for VC++ if needed.
2367 [Austin Ziegler <halostatue@gmail.com>]
2369 *) Update support for ECC-based TLS ciphersuites according to
2370 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2371 TLS extensions, which are supported starting with the 0.9.9
2372 branch, not in the OpenSSL 0.9.8 branch).
2375 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2376 opaque EVP_CIPHER_CTX handling.
2379 *) Fixes and enhancements to zlib compression code. We now only use
2380 "zlib1.dll" and use the default __cdecl calling convention on Win32
2381 to conform with the standards mentioned here:
2382 http://www.zlib.net/DLL_FAQ.txt
2383 Static zlib linking now works on Windows and the new --with-zlib-include
2384 --with-zlib-lib options to Configure can be used to supply the location
2385 of the headers and library. Gracefully handle case where zlib library
2389 *) Several fixes and enhancements to the OID generation code. The old code
2390 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2391 handle numbers larger than ULONG_MAX, truncated printing and had a
2392 non standard OBJ_obj2txt() behaviour.
2395 *) Add support for building of engines under engine/ as shared libraries
2396 under VC++ build system.
2399 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2400 Hopefully, we will not see any false combination of paths any more.
2403 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2405 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2406 (part of SSL_OP_ALL). This option used to disable the
2407 countermeasure against man-in-the-middle protocol-version
2408 rollback in the SSL 2.0 server implementation, which is a bad
2409 idea. (CVE-2005-2969)
2411 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2412 for Information Security, National Institute of Advanced Industrial
2413 Science and Technology [AIST], Japan)]
2415 *) Add two function to clear and return the verify parameter flags.
2418 *) Keep cipherlists sorted in the source instead of sorting them at
2419 runtime, thus removing the need for a lock.
2422 *) Avoid some small subgroup attacks in Diffie-Hellman.
2423 [Nick Mathewson and Ben Laurie]
2425 *) Add functions for well-known primes.
2428 *) Extended Windows CE support.
2429 [Satoshi Nakamura and Andy Polyakov]
2431 *) Initialize SSL_METHOD structures at compile time instead of during
2432 runtime, thus removing the need for a lock.
2435 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2436 attempting to decrypt each encrypted key in turn. Add support to
2440 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2442 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2445 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2448 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2449 key into the same file any more.
2452 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2455 *) Add -utf8 command line and config file option to 'ca'.
2456 [Stefan <stf@udoma.org]
2458 *) Removed the macro des_crypt(), as it seems to conflict with some
2459 libraries. Use DES_crypt().
2462 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2463 involves renaming the source and generated shared-libs for
2464 both. The engines will accept the corrected or legacy ids
2465 ('ncipher' and '4758_cca' respectively) when binding. NB,
2466 this only applies when building 'shared'.
2467 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2469 *) Add attribute functions to EVP_PKEY structure. Modify
2470 PKCS12_create() to recognize a CSP name attribute and
2471 use it. Make -CSP option work again in pkcs12 utility.
2474 *) Add new functionality to the bn blinding code:
2475 - automatic re-creation of the BN_BLINDING parameters after
2476 a fixed number of uses (currently 32)
2477 - add new function for parameter creation
2478 - introduce flags to control the update behaviour of the
2479 BN_BLINDING parameters
2480 - hide BN_BLINDING structure
2481 Add a second BN_BLINDING slot to the RSA structure to improve
2482 performance when a single RSA object is shared among several
2486 *) Add support for DTLS.
2487 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2489 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2490 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2493 *) Remove buggy and incompletet DH cert support from
2494 ssl/ssl_rsa.c and ssl/s3_both.c
2497 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2498 the apps/openssl applications.
2501 *) Compile clean with "-Wall -Wmissing-prototypes
2502 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2503 DEBUG_SAFESTACK must also be set.
2506 *) Change ./Configure so that certain algorithms can be disabled by default.
2507 The new counterpiece to "no-xxx" is "enable-xxx".
2509 The patented RC5 and MDC2 algorithms will now be disabled unless
2510 "enable-rc5" and "enable-mdc2", respectively, are specified.
2512 (IDEA remains enabled despite being patented. This is because IDEA
2513 is frequently required for interoperability, and there is no license
2514 fee for non-commercial use. As before, "no-idea" can be used to
2515 avoid this algorithm.)
2519 *) Add processing of proxy certificates (see RFC 3820). This work was
2520 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2521 EGEE (Enabling Grids for E-science in Europe).
2524 *) RC4 performance overhaul on modern architectures/implementations, such
2525 as Intel P4, IA-64 and AMD64.
2528 *) New utility extract-section.pl. This can be used specify an alternative
2529 section number in a pod file instead of having to treat each file as
2530 a separate case in Makefile. This can be done by adding two lines to the
2533 =for comment openssl_section:XXX
2535 The blank line is mandatory.
2539 *) New arguments -certform, -keyform and -pass for s_client and s_server
2540 to allow alternative format key and certificate files and passphrase
2544 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2545 update associated structures and add various utility functions.
2547 Add new policy related verify parameters, include policy checking in
2548 standard verify code. Enhance 'smime' application with extra parameters
2549 to support policy checking and print out.
2552 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2553 Nehemiah processors. These extensions support AES encryption in hardware
2554 as well as RNG (though RNG support is currently disabled).
2555 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2557 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2560 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2561 [Andy Polyakov and a number of other people]
2563 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2564 implementation contributed by IBM.
2565 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2567 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2568 exponent rather than 'unsigned long'. There is a corresponding change to
2569 the new 'rsa_keygen' element of the RSA_METHOD structure.
2570 [Jelte Jansen, Geoff Thorpe]
2572 *) Functionality for creating the initial serial number file is now
2573 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2575 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2576 number file to 1, which is bound to cause problems. To avoid
2577 the problems while respecting compatibility between different 0.9.7
2578 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2579 CA.pl for serial number initialization. With the new release 0.9.8,
2580 we can fix the problem directly in the 'ca' utility.)
2583 *) Reduced header interdepencies by declaring more opaque objects in
2584 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2585 give fewer recursive includes, which could break lazy source code - so
2586 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2587 developers should define this symbol when building and using openssl to
2588 ensure they track the recommended behaviour, interfaces, [etc], but
2589 backwards-compatible behaviour prevails when this isn't defined.
2592 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2595 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2596 This will generate a random key of the appropriate length based on the
2597 cipher context. The EVP_CIPHER can provide its own random key generation
2598 routine to support keys of a specific form. This is used in the des and
2599 3des routines to generate a key of the correct parity. Update S/MIME
2600 code to use new functions and hence generate correct parity DES keys.
2601 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2602 valid (weak or incorrect parity).
2605 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2606 as looking them up. This is useful when the verified structure may contain
2607 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2608 present unless the new PKCS7_NO_CRL flag is asserted.
2611 *) Extend ASN1 oid configuration module. It now additionally accepts the
2614 shortName = some long name, 1.2.3.4
2617 *) Reimplemented the BN_CTX implementation. There is now no more static
2618 limitation on the number of variables it can handle nor the depth of the
2619 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2620 information can now expand as required, and rather than having a single
2621 static array of bignums, BN_CTX now uses a linked-list of such arrays
2622 allowing it to expand on demand whilst maintaining the usefulness of
2623 BN_CTX's "bundling".
2626 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2627 to allow all RSA operations to function using a single BN_CTX.
2630 *) Preliminary support for certificate policy evaluation and checking. This
2631 is initially intended to pass the tests outlined in "Conformance Testing
2632 of Relying Party Client Certificate Path Processing Logic" v1.07.
2635 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2636 remained unused and not that useful. A variety of other little bignum
2637 tweaks and fixes have also been made continuing on from the audit (see
2641 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2642 associated ASN1, EVP and SSL functions and old ASN1 macros.
2645 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2646 and this should never fail. So the return value from the use of
2647 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2648 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2651 *) BN_CTX_get() should return zero-valued bignums, providing the same
2652 initialised value as BN_new().
2653 [Geoff Thorpe, suggested by Ulf Möller]
2655 *) Support for inhibitAnyPolicy certificate extension.
2658 *) An audit of the BIGNUM code is underway, for which debugging code is
2659 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2660 is considered valid when processing BIGNUMs, and causes execution to
2661 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2662 further steps are taken to deliberately pollute unused data in BIGNUM
2663 structures to try and expose faulty code further on. For now, openssl will
2664 (in its default mode of operation) continue to tolerate the inconsistent
2665 forms that it has tolerated in the past, but authors and packagers should
2666 consider trying openssl and their own applications when compiled with
2667 these debugging symbols defined. It will help highlight potential bugs in
2668 their own code, and will improve the test coverage for OpenSSL itself. At
2669 some point, these tighter rules will become openssl's default to improve
2670 maintainability, though the assert()s and other overheads will remain only
2671 in debugging configurations. See bn.h for more details.
2672 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2674 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2675 that can only be obtained through BN_CTX_new() (which implicitly
2676 initialises it). The presence of this function only made it possible
2677 to overwrite an existing structure (and cause memory leaks).
2680 *) Because of the callback-based approach for implementing LHASH as a
2681 template type, lh_insert() adds opaque objects to hash-tables and
2682 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2683 to clean up those corresponding objects before destroying the hash table
2684 (and losing the object pointers). So some over-zealous constifications in
2685 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2686 objects as "const" and the lh_doall[_arg] callback wrappers are not
2687 prototyped to have "const" restrictions on the object pointers they are
2688 given (and so aren't required to cast them away any more).
2691 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2692 (speed) prefers to use its own implementation. The two implementations
2693 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2694 its object type properly exposed (MS_TM) instead of casting to/from "char
2695 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2696 aren't necessarily the greatest nomenclatures - but this is what was used
2697 internally to the implementation so I've used that for now.
2700 *) Ensure that deprecated functions do not get compiled when
2701 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2702 the self-tests were still using deprecated key-generation functions so
2703 these have been updated also.
2706 *) Reorganise PKCS#7 code to separate the digest location functionality
2707 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2708 New function PKCS7_set_digest() to set the digest type for PKCS#7
2709 digestedData type. Add additional code to correctly generate the
2710 digestedData type and add support for this type in PKCS7 initialization
2714 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2715 structure of type "other".
2718 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2719 sure the loop does correctly stop and breaking ("division by zero")
2720 modulus operations are not performed. The (pre-generated) prime
2721 table crypto/bn/bn_prime.h was already correct, but it could not be
2722 re-generated on some platforms because of the "division by zero"
2723 situation in the script.
2724 [Ralf S. Engelschall]
2726 *) Update support for ECC-based TLS ciphersuites according to
2727 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2728 SHA-1 now is only used for "small" curves (where the
2729 representation of a field element takes up to 24 bytes); for
2730 larger curves, the field element resulting from ECDH is directly
2731 used as premaster secret.
2732 [Douglas Stebila (Sun Microsystems Laboratories)]
2734 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2735 curve secp160r1 to the tests.
2736 [Douglas Stebila (Sun Microsystems Laboratories)]
2738 *) Add the possibility to load symbols globally with DSO.
2739 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2741 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2742 control of the error stack.
2745 *) Add support for STORE in ENGINE.
2748 *) Add the STORE type. The intention is to provide a common interface
2749 to certificate and key stores, be they simple file-based stores, or
2750 HSM-type store, or LDAP stores, or...
2751 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2754 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2755 pass a list of arguments to any function as well as provide a way
2756 for a function to pass data back to the caller.
2759 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2760 works like BUF_strdup() but can be used to duplicate a portion of
2761 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2765 *) Add the function sk_find_ex() which works like sk_find(), but will
2766 return an index to an element even if an exact match couldn't be
2767 found. The index is guaranteed to point at the element where the
2768 searched-for key would be inserted to preserve sorting order.
2771 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2772 takes an extra flags argument for optional functionality. Currently,
2773 the following flags are defined:
2775 OBJ_BSEARCH_VALUE_ON_NOMATCH
2776 This one gets OBJ_bsearch_ex() to return a pointer to the first
2777 element where the comparing function returns a negative or zero
2780 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2781 This one gets OBJ_bsearch_ex() to return a pointer to the first
2782 element where the comparing function returns zero. This is useful
2783 if there are more than one element where the comparing function
2787 *) Make it possible to create self-signed certificates with 'openssl ca'
2788 in such a way that the self-signed certificate becomes part of the
2789 CA database and uses the same mechanisms for serial number generation
2790 as all other certificate signing. The new flag '-selfsign' enables
2791 this functionality. Adapt CA.sh and CA.pl.in.
2794 *) Add functionality to check the public key of a certificate request
2795 against a given private. This is useful to check that a certificate
2796 request can be signed by that key (self-signing).
2799 *) Make it possible to have multiple active certificates with the same
2800 subject in the CA index file. This is done only if the keyword
2801 'unique_subject' is set to 'no' in the main CA section (default
2802 if 'CA_default') of the configuration file. The value is saved
2803 with the database itself in a separate index attribute file,
2804 named like the index file with '.attr' appended to the name.
2807 *) Generate muti valued AVAs using '+' notation in config files for
2811 *) Support for nameConstraints certificate extension.
2814 *) Support for policyConstraints certificate extension.
2817 *) Support for policyMappings certificate extension.
2820 *) Make sure the default DSA_METHOD implementation only uses its
2821 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2822 and change its own handlers to be NULL so as to remove unnecessary
2823 indirection. This lets alternative implementations fallback to the
2824 default implementation more easily.
2827 *) Support for directoryName in GeneralName related extensions
2831 *) Make it possible to link applications using Makefile.shared.
2832 Make that possible even when linking against static libraries!
2835 *) Support for single pass processing for S/MIME signing. This now
2836 means that S/MIME signing can be done from a pipe, in addition
2837 cleartext signing (multipart/signed type) is effectively streaming
2838 and the signed data does not need to be all held in memory.
2840 This is done with a new flag PKCS7_STREAM. When this flag is set
2841 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2842 is done after the data is output (and digests calculated) in
2843 SMIME_write_PKCS7().
2846 *) Add full support for -rpath/-R, both in shared libraries and
2847 applications, at least on the platforms where it's known how
2851 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2852 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2853 will now compute a table of multiples of the generator that
2854 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2855 faster (notably in the case of a single point multiplication,
2856 scalar * generator).
2857 [Nils Larsch, Bodo Moeller]
2859 *) IPv6 support for certificate extensions. The various extensions
2860 which use the IP:a.b.c.d can now take IPv6 addresses using the
2861 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2865 *) Added an ENGINE that implements RSA by performing private key
2866 exponentiations with the GMP library. The conversions to and from
2867 GMP's mpz_t format aren't optimised nor are any montgomery forms
2868 cached, and on x86 it appears OpenSSL's own performance has caught up.
2869 However there are likely to be other architectures where GMP could
2870 provide a boost. This ENGINE is not built in by default, but it can be
2871 specified at Configure time and should be accompanied by the necessary
2872 linker additions, eg;
2873 ./config -DOPENSSL_USE_GMP -lgmp
2876 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2877 testing availability of engines with "-t" - the old behaviour is
2878 produced by increasing the feature's verbosity with "-tt".
2881 *) ECDSA routines: under certain error conditions uninitialized BN objects
2882 could be freed. Solution: make sure initialization is performed early
2883 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2887 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2888 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2889 software implementations. For DSA and DH, parameter generation can
2890 also be overriden by providing the appropriate method callbacks.
2893 *) Change the "progress" mechanism used in key-generation and
2894 primality testing to functions that take a new BN_GENCB pointer in
2895 place of callback/argument pairs. The new API functions have "_ex"
2896 postfixes and the older functions are reimplemented as wrappers for
2897 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2898 declarations of the old functions to help (graceful) attempts to
2899 migrate to the new functions. Also, the new key-generation API
2900 functions operate on a caller-supplied key-structure and return
2901 success/failure rather than returning a key or NULL - this is to
2902 help make "keygen" another member function of RSA_METHOD etc.
2904 Example for using the new callback interface:
2906 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2910 BN_GENCB_set(&my_cb, my_callback, my_arg);
2912 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2913 /* For the meaning of a, b in calls to my_callback(), see the
2914 * documentation of the function that calls the callback.
2915 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2916 * my_callback should return 1 if it wants BN_is_prime_ex()
2917 * to continue, or 0 to stop.
2922 *) Change the ZLIB compression method to be stateful, and make it
2923 available to TLS with the number defined in
2924 draft-ietf-tls-compression-04.txt.
2927 *) Add the ASN.1 structures and functions for CertificatePair, which
2928 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2930 CertificatePair ::= SEQUENCE {
2931 forward [0] Certificate OPTIONAL,
2932 reverse [1] Certificate OPTIONAL,
2933 -- at least one of the pair shall be present -- }
2935 Also implement the PEM functions to read and write certificate
2936 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2938 This needed to be defined, mostly for the sake of the LDAP
2939 attribute crossCertificatePair, but may prove useful elsewhere as
2943 *) Make it possible to inhibit symlinking of shared libraries in
2944 Makefile.shared, for Cygwin's sake.
2947 *) Extend the BIGNUM API by creating a function
2948 void BN_set_negative(BIGNUM *a, int neg);
2949 and a macro that behave like
2950 int BN_is_negative(const BIGNUM *a);
2952 to avoid the need to access 'a->neg' directly in applications.
2955 *) Implement fast modular reduction for pseudo-Mersenne primes
2956 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2957 EC_GROUP_new_curve_GFp() will now automatically use this
2959 [Nils Larsch <nla@trustcenter.de>]
2961 *) Add new lock type (CRYPTO_LOCK_BN).
2964 *) Change the ENGINE framework to automatically load engines
2965 dynamically from specific directories unless they could be
2966 found to already be built in or loaded. Move all the
2967 current engines except for the cryptodev one to a new
2969 The engines in engines/ are built as shared libraries if
2970 the "shared" options was given to ./Configure or ./config.
2971 Otherwise, they are inserted in libcrypto.a.
2972 /usr/local/ssl/engines is the default directory for dynamic
2973 engines, but that can be overriden at configure time through
2974 the usual use of --prefix and/or --openssldir, and at run
2975 time with the environment variable OPENSSL_ENGINES.
2976 [Geoff Thorpe and Richard Levitte]
2978 *) Add Makefile.shared, a helper makefile to build shared
2979 libraries. Addapt Makefile.org.
2982 *) Add version info to Win32 DLLs.
2983 [Peter 'Luna' Runestig" <peter@runestig.com>]
2985 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2986 can be added using this API to created arbitrary PKCS#12
2987 files while avoiding the low level API.
2989 New options to PKCS12_create(), key or cert can be NULL and
2990 will then be omitted from the output file. The encryption
2991 algorithm NIDs can be set to -1 for no encryption, the mac
2992 iteration count can be set to 0 to omit the mac.
2994 Enhance pkcs12 utility by making the -nokeys and -nocerts
2995 options work when creating a PKCS#12 file. New option -nomac
2996 to omit the mac, NONE can be set for an encryption algorithm.
2997 New code is modified to use the enhanced PKCS12_create()
2998 instead of the low level API.
3001 *) Extend ASN1 encoder to support indefinite length constructed
3002 encoding. This can output sequences tags and octet strings in
3003 this form. Modify pk7_asn1.c to support indefinite length
3004 encoding. This is experimental and needs additional code to
3005 be useful, such as an ASN1 bio and some enhanced streaming
3008 Extend template encode functionality so that tagging is passed
3009 down to the template encoder.
3012 *) Let 'openssl req' fail if an argument to '-newkey' is not
3013 recognized instead of using RSA as a default.
3016 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3017 As these are not official, they are not included in "ALL";
3018 the "ECCdraft" ciphersuite group alias can be used to select them.
3019 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3021 *) Add ECDH engine support.
3022 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3024 *) Add ECDH in new directory crypto/ecdh/.
3025 [Douglas Stebila (Sun Microsystems Laboratories)]
3027 *) Let BN_rand_range() abort with an error after 100 iterations
3028 without success (which indicates a broken PRNG).
3031 *) Change BN_mod_sqrt() so that it verifies that the input value
3032 is really the square of the return value. (Previously,
3033 BN_mod_sqrt would show GIGO behaviour.)
3036 *) Add named elliptic curves over binary fields from X9.62, SECG,
3037 and WAP/WTLS; add OIDs that were still missing.
3039 [Sheueling Chang Shantz and Douglas Stebila
3040 (Sun Microsystems Laboratories)]
3042 *) Extend the EC library for elliptic curves over binary fields
3043 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3046 EC_GF2m_simple_method
3050 EC_GROUP_new_curve_GF2m
3051 EC_GROUP_set_curve_GF2m
3052 EC_GROUP_get_curve_GF2m
3053 EC_POINT_set_affine_coordinates_GF2m
3054 EC_POINT_get_affine_coordinates_GF2m
3055 EC_POINT_set_compressed_coordinates_GF2m
3057 Point compression for binary fields is disabled by default for
3058 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3061 As binary polynomials are represented as BIGNUMs, various members
3062 of the EC_GROUP and EC_POINT data structures can be shared
3063 between the implementations for prime fields and binary fields;
3064 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3065 are essentially identical to their ..._GFp counterparts.
3066 (For simplicity, the '..._GFp' prefix has been dropped from
3067 various internal method names.)
3069 An internal 'field_div' method (similar to 'field_mul' and
3070 'field_sqr') has been added; this is used only for binary fields.
3072 [Sheueling Chang Shantz and Douglas Stebila
3073 (Sun Microsystems Laboratories)]
3075 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3076 through methods ('mul', 'precompute_mult').
3078 The generic implementations (now internally called 'ec_wNAF_mul'
3079 and 'ec_wNAF_precomputed_mult') remain the default if these
3080 methods are undefined.
3082 [Sheueling Chang Shantz and Douglas Stebila
3083 (Sun Microsystems Laboratories)]
3085 *) New function EC_GROUP_get_degree, which is defined through
3086 EC_METHOD. For curves over prime fields, this returns the bit
3087 length of the modulus.
3089 [Sheueling Chang Shantz and Douglas Stebila
3090 (Sun Microsystems Laboratories)]
3092 *) New functions EC_GROUP_dup, EC_POINT_dup.
3093 (These simply call ..._new and ..._copy).
3095 [Sheueling Chang Shantz and Douglas Stebila
3096 (Sun Microsystems Laboratories)]
3098 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3099 Polynomials are represented as BIGNUMs (where the sign bit is not
3100 used) in the following functions [macros]:
3103 BN_GF2m_sub [= BN_GF2m_add]
3104 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3105 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3106 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3108 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3109 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3110 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3111 BN_GF2m_cmp [= BN_ucmp]
3113 (Note that only the 'mod' functions are actually for fields GF(2^m).
3114 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3116 For some functions, an the irreducible polynomial defining a
3117 field can be given as an 'unsigned int[]' with strictly
3118 decreasing elements giving the indices of those bits that are set;
3119 i.e., p[] represents the polynomial
3120 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3122 p[0] > p[1] > ... > p[k] = 0.
3123 This applies to the following functions:
3128 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3129 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3131 BN_GF2m_mod_sqrt_arr
3132 BN_GF2m_mod_solve_quad_arr
3136 Conversion can be performed by the following functions:
3141 bntest.c has additional tests for binary polynomial arithmetic.
3143 Two implementations for BN_GF2m_mod_div() are available.
3144 The default algorithm simply uses BN_GF2m_mod_inv() and
3145 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3146 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3147 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3149 [Sheueling Chang Shantz and Douglas Stebila
3150 (Sun Microsystems Laboratories)]
3152 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3153 functionality is disabled at compile-time.
3154 [Douglas Stebila <douglas.stebila@sun.com>]
3156 *) Change default behaviour of 'openssl asn1parse' so that more
3157 information is visible when viewing, e.g., a certificate:
3159 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3160 mode the content of non-printable OCTET STRINGs is output in a
3161 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3162 avoid the appearance of a printable string.
3163 [Nils Larsch <nla@trustcenter.de>]
3165 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3167 EC_GROUP_set_asn1_flag()
3168 EC_GROUP_get_asn1_flag()
3169 EC_GROUP_set_point_conversion_form()
3170 EC_GROUP_get_point_conversion_form()
3171 These control ASN1 encoding details:
3172 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3173 has been set to OPENSSL_EC_NAMED_CURVE.
3174 - Points are encoded in uncompressed form by default; options for
3175 asn1_for are as for point2oct, namely
3176 POINT_CONVERSION_COMPRESSED
3177 POINT_CONVERSION_UNCOMPRESSED
3178 POINT_CONVERSION_HYBRID
3180 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3183 EC_GROUP_get0_seed()
3184 EC_GROUP_get_seed_len()
3185 This is used only for ASN1 purposes (so far).
3186 [Nils Larsch <nla@trustcenter.de>]
3188 *) Add 'field_type' member to EC_METHOD, which holds the NID
3189 of the appropriate field type OID. The new function
3190 EC_METHOD_get_field_type() returns this value.
3191 [Nils Larsch <nla@trustcenter.de>]
3196 EC_POINT_point2hex()
3197 EC_POINT_hex2point()
3198 providing useful interfaces to EC_POINT_point2oct() and
3199 EC_POINT_oct2point().
3200 [Nils Larsch <nla@trustcenter.de>]
3202 *) Change internals of the EC library so that the functions
3203 EC_GROUP_set_generator()
3204 EC_GROUP_get_generator()
3205 EC_GROUP_get_order()
3206 EC_GROUP_get_cofactor()
3207 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3208 to methods, which would lead to unnecessary code duplication when
3209 adding different types of curves.
3210 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3212 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3213 arithmetic, and such that modified wNAFs are generated
3214 (which avoid length expansion in many cases).
3217 *) Add a function EC_GROUP_check_discriminant() (defined via
3218 EC_METHOD) that verifies that the curve discriminant is non-zero.
3220 Add a function EC_GROUP_check() that makes some sanity tests
3221 on a EC_GROUP, its generator and order. This includes
3222 EC_GROUP_check_discriminant().
3223 [Nils Larsch <nla@trustcenter.de>]
3225 *) Add ECDSA in new directory crypto/ecdsa/.
3227 Add applications 'openssl ecparam' and 'openssl ecdsa'
3228 (these are based on 'openssl dsaparam' and 'openssl dsa').
3230 ECDSA support is also included in various other files across the
3231 library. Most notably,
3232 - 'openssl req' now has a '-newkey ecdsa:file' option;
3233 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3234 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3235 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3236 them suitable for ECDSA where domain parameters must be
3237 extracted before the specific public key;
3238 - ECDSA engine support has been added.
3239 [Nils Larsch <nla@trustcenter.de>]
3241 *) Include some named elliptic curves, and add OIDs from X9.62,
3242 SECG, and WAP/WTLS. Each curve can be obtained from the new
3244 EC_GROUP_new_by_curve_name(),
3245 and the list of available named curves can be obtained with
3246 EC_get_builtin_curves().
3247 Also add a 'curve_name' member to EC_GROUP objects, which can be
3249 EC_GROUP_set_curve_name()
3250 EC_GROUP_get_curve_name()
3251 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3253 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3254 was actually never needed) and in BN_mul(). The removal in BN_mul()
3255 required a small change in bn_mul_part_recursive() and the addition
3256 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3257 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3258 bn_sub_words() and bn_add_words() except they take arrays with
3262 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3264 *) Cleanse PEM buffers before freeing them since they may contain
3266 [Benjamin Bennett <ben@psc.edu>]
3268 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3269 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3270 authentication-only ciphersuites.
3273 *) Since AES128 and AES256 share a single mask bit in the logic of
3274 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3275 kludge to work properly if AES128 is available and AES256 isn't.
3278 *) Expand security boundary to match 1.1.1 module.
3281 *) Remove redundant features: hash file source, editing of test vectors
3282 modify fipsld to use external fips_premain.c signature.
3285 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3286 run algorithm test programs.
3289 *) Make algorithm test programs more tolerant of whitespace.
3292 *) Have SSL/TLS server implementation tolerate "mismatched" record
3293 protocol version while receiving ClientHello even if the
3294 ClientHello is fragmented. (The server can't insist on the
3295 particular protocol version it has chosen before the ServerHello
3296 message has informed the client about his choice.)
3299 *) Load error codes if they are not already present instead of using a
3300 static variable. This allows them to be cleanly unloaded and reloaded.
3303 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3305 *) Introduce limits to prevent malicious keys being able to
3306 cause a denial of service. (CVE-2006-2940)
3307 [Steve Henson, Bodo Moeller]
3309 *) Fix ASN.1 parsing of certain invalid structures that can result
3310 in a denial of service. (CVE-2006-2937) [Steve Henson]
3312 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3313 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3315 *) Fix SSL client code which could crash if connecting to a
3316 malicious SSLv2 server. (CVE-2006-4343)
3317 [Tavis Ormandy and Will Drewry, Google Security Team]
3319 *) Change ciphersuite string processing so that an explicit
3320 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3321 will no longer include "AES128-SHA"), and any other similar
3322 ciphersuite (same bitmap) from *other* protocol versions (so that
3323 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3324 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3325 changes from 0.9.8b and 0.9.8d.
3328 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3330 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3331 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3333 *) Change the Unix randomness entropy gathering to use poll() when
3334 possible instead of select(), since the latter has some
3335 undesirable limitations.
3336 [Darryl Miles via Richard Levitte and Bodo Moeller]
3338 *) Disable rogue ciphersuites:
3340 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3341 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3342 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3344 The latter two were purportedly from
3345 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3348 Also deactive the remaining ciphersuites from
3349 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3350 unofficial, and the ID has long expired.
3353 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3354 dual-core machines) and other potential thread-safety issues.
3357 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3359 *) Adapt fipsld and the build system to link against the validated FIPS
3360 module in FIPS mode.
3363 *) Fixes for VC++ 2005 build under Windows.
3366 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3367 from a Windows bash shell such as MSYS. It is autodetected from the
3368 "config" script when run from a VC++ environment. Modify standard VC++
3369 build to use fipscanister.o from the GNU make build.
3372 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3374 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3375 The value now differs depending on if you build for FIPS or not.
3376 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3377 safely run with a non-FIPSed libcrypto, as it may crash because of
3378 the difference induced by this change.
3381 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3383 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3384 (part of SSL_OP_ALL). This option used to disable the
3385 countermeasure against man-in-the-middle protocol-version
3386 rollback in the SSL 2.0 server implementation, which is a bad
3387 idea. (CVE-2005-2969)
3389 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3390 for Information Security, National Institute of Advanced Industrial
3391 Science and Technology [AIST], Japan)]
3393 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3394 mainly for FIPS compliance and not fully integrated at this stage.
3397 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3398 the exponentiation using a fixed-length exponent. (Otherwise,
3399 the information leaked through timing could expose the secret key
3400 after many signatures; cf. Bleichenbacher's attack on DSA with
3404 *) Make a new fixed-window mod_exp implementation the default for
3405 RSA, DSA, and DH private-key operations so that the sequence of
3406 squares and multiplies and the memory access pattern are
3407 independent of the particular secret key. This will mitigate
3408 cache-timing and potential related attacks.
3410 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3411 and this is automatically used by BN_mod_exp_mont() if the new flag
3412 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3413 will use this BN flag for private exponents unless the flag
3414 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3415 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3417 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3419 *) Change the client implementation for SSLv23_method() and
3420 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3421 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3422 (Previously, the SSL 2.0 backwards compatible Client Hello
3423 message format would be used even with SSL_OP_NO_SSLv2.)
3426 *) Add support for smime-type MIME parameter in S/MIME messages which some
3430 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3431 a threadsafe manner. Modify rsa code to use new function and add calls
3432 to dsa and dh code (which had race conditions before).
3435 *) Include the fixed error library code in the C error file definitions
3436 instead of fixing them up at runtime. This keeps the error code
3437 structures constant.
3440 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3442 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3445 *) Fixes for newer kerberos headers. NB: the casts are needed because
3446 the 'length' field is signed on one version and unsigned on another
3447 with no (?) obvious way to tell the difference, without these VC++
3448 complains. Also the "definition" of FAR (blank) is no longer included
3449 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3450 some needed definitions.
3453 *) Undo Cygwin change.
3456 *) Added support for proxy certificates according to RFC 3820.
3457 Because they may be a security thread to unaware applications,
3458 they must be explicitely allowed in run-time. See
3459 docs/HOWTO/proxy_certificates.txt for further information.
3462 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3464 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3465 server and client random values. Previously
3466 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3467 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3469 This change has negligible security impact because:
3471 1. Server and client random values still have 24 bytes of pseudo random
3474 2. Server and client random values are sent in the clear in the initial
3477 3. The master secret is derived using the premaster secret (48 bytes in
3478 size for static RSA ciphersuites) as well as client server and random
3481 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3484 [Stephen Henson, reported by UK NISCC]
3486 *) Use Windows randomness collection on Cygwin.
3489 *) Fix hang in EGD/PRNGD query when communication socket is closed
3490 prematurely by EGD/PRNGD.
3491 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3493 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3496 *) Back-port of selected performance improvements from development
3497 branch, as well as improved support for PowerPC platforms.
3500 *) Add lots of checks for memory allocation failure, error codes to indicate
3501 failure and freeing up memory if a failure occurs.
3502 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3504 *) Add new -passin argument to dgst.
3507 *) Perform some character comparisons of different types in X509_NAME_cmp:
3508 this is needed for some certificates that reencode DNs into UTF8Strings
3509 (in violation of RFC3280) and can't or wont issue name rollover
3513 *) Make an explicit check during certificate validation to see that
3514 the CA setting in each certificate on the chain is correct. As a
3515 side effect always do the following basic checks on extensions,
3516 not just when there's an associated purpose to the check:
3518 - if there is an unhandled critical extension (unless the user
3519 has chosen to ignore this fault)
3520 - if the path length has been exceeded (if one is set at all)
3521 - that certain extensions fit the associated purpose (if one has
3525 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3527 *) Avoid a race condition when CRLs are checked in a multi threaded
3528 environment. This would happen due to the reordering of the revoked
3529 entries during signature checking and serial number lookup. Now the
3530 encoding is cached and the serial number sort performed under a lock.
3531 Add new STACK function sk_is_sorted().
3534 *) Add Delta CRL to the extension code.
3537 *) Various fixes to s3_pkt.c so alerts are sent properly.
3538 [David Holmes <d.holmes@f5.com>]
3540 *) Reduce the chances of duplicate issuer name and serial numbers (in
3541 violation of RFC3280) using the OpenSSL certificate creation utilities.
3542 This is done by creating a random 64 bit value for the initial serial
3543 number when a serial number file is created or when a self signed
3544 certificate is created using 'openssl req -x509'. The initial serial
3545 number file is created using 'openssl x509 -next_serial' in CA.pl
3546 rather than being initialized to 1.
3549 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3551 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3552 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3553 [Joe Orton, Steve Henson]
3555 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3557 [Joe Orton, Steve Henson]
3559 *) Make it possible to have multiple active certificates with the same
3560 subject in the CA index file. This is done only if the keyword
3561 'unique_subject' is set to 'no' in the main CA section (default
3562 if 'CA_default') of the configuration file. The value is saved
3563 with the database itself in a separate index attribute file,
3564 named like the index file with '.attr' appended to the name.
3567 *) X509 verify fixes. Disable broken certificate workarounds when
3568 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3569 keyUsage extension present. Don't accept CRLs with unhandled critical
3570 extensions: since verify currently doesn't process CRL extensions this
3571 rejects a CRL with *any* critical extensions. Add new verify error codes
3575 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3576 A clarification of RFC2560 will require the use of OCTET STRINGs and
3577 some implementations cannot handle the current raw format. Since OpenSSL
3578 copies and compares OCSP nonces as opaque blobs without any attempt at
3579 parsing them this should not create any compatibility issues.
3582 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3583 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3584 this HMAC (and other) operations are several times slower than OpenSSL
3588 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3589 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3591 *) Use the correct content when signing type "other".
3594 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3596 *) Fix various bugs revealed by running the NISCC test suite:
3598 Stop out of bounds reads in the ASN1 code when presented with
3599 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3601 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3603 If verify callback ignores invalid public key errors don't try to check
3604 certificate signature with the NULL public key.
3608 *) New -ignore_err option in ocsp application to stop the server
3609 exiting on the first error in a request.
3612 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3613 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3617 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3618 extra data after the compression methods not only for TLS 1.0
3619 but also for SSL 3.0 (as required by the specification).
3620 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3622 *) Change X509_certificate_type() to mark the key as exported/exportable
3623 when it's 512 *bits* long, not 512 bytes.
3626 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3627 blocks during encryption.
3630 *) Various fixes to base64 BIO and non blocking I/O. On write
3631 flushes were not handled properly if the BIO retried. On read
3632 data was not being buffered properly and had various logic bugs.
3633 This also affects blocking I/O when the data being decoded is a
3637 *) Various S/MIME bugfixes and compatibility changes:
3638 output correct application/pkcs7 MIME type if
3639 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3640 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3641 of files as .eml work). Correctly handle very long lines in MIME
3645 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3647 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3648 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3649 a protocol version number mismatch like a decryption error
3650 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3653 *) Turn on RSA blinding by default in the default implementation
3654 to avoid a timing attack. Applications that don't want it can call
3655 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3656 They would be ill-advised to do so in most cases.
3657 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3659 *) Change RSA blinding code so that it works when the PRNG is not
3660 seeded (in this case, the secret RSA exponent is abused as
3661 an unpredictable seed -- if it is not unpredictable, there
3662 is no point in blinding anyway). Make RSA blinding thread-safe
3663 by remembering the creator's thread ID in rsa->blinding and
3664 having all other threads use local one-time blinding factors
3665 (this requires more computation than sharing rsa->blinding, but
3666 avoids excessive locking; and if an RSA object is not shared
3667 between threads, blinding will still be very fast).
3670 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3671 ENGINE as defaults for all supported algorithms irrespective of
3672 the 'flags' parameter. 'flags' is now honoured, so applications
3673 should make sure they are passing it correctly.
3676 *) Target "mingw" now allows native Windows code to be generated in
3677 the Cygwin environment as well as with the MinGW compiler.
3680 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3682 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3683 via timing by performing a MAC computation even if incorrrect
3684 block cipher padding has been found. This is a countermeasure
3685 against active attacks where the attacker has to distinguish
3686 between bad padding and a MAC verification error. (CVE-2003-0078)
3688 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3689 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3690 Martin Vuagnoux (EPFL, Ilion)]
3692 *) Make the no-err option work as intended. The intention with no-err
3693 is not to have the whole error stack handling routines removed from
3694 libcrypto, it's only intended to remove all the function name and
3695 reason texts, thereby removing some of the footprint that may not
3696 be interesting if those errors aren't displayed anyway.
3698 NOTE: it's still possible for any application or module to have it's
3699 own set of error texts inserted. The routines are there, just not
3700 used by default when no-err is given.
3703 *) Add support for FreeBSD on IA64.
3704 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3706 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3707 Kerberos function mit_des_cbc_cksum(). Before this change,
3708 the value returned by DES_cbc_cksum() was like the one from
3709 mit_des_cbc_cksum(), except the bytes were swapped.
3710 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3712 *) Allow an application to disable the automatic SSL chain building.
3713 Before this a rather primitive chain build was always performed in
3714 ssl3_output_cert_chain(): an application had no way to send the
3715 correct chain if the automatic operation produced an incorrect result.
3717 Now the chain builder is disabled if either:
3719 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3721 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3723 The reasoning behind this is that an application would not want the
3724 auto chain building to take place if extra chain certificates are
3725 present and it might also want a means of sending no additional
3726 certificates (for example the chain has two certificates and the
3730 *) Add the possibility to build without the ENGINE framework.
3731 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3733 *) Under Win32 gmtime() can return NULL: check return value in
3734 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3737 *) DSA routines: under certain error conditions uninitialized BN objects
3738 could be freed. Solution: make sure initialization is performed early
3739 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3740 Nils Larsch <nla@trustcenter.de> via PR#459)
3743 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3744 checked on reconnect on the client side, therefore session resumption
3745 could still fail with a "ssl session id is different" error. This
3746 behaviour is masked when SSL_OP_ALL is used due to
3747 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3748 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3749 followup to PR #377.
3752 *) IA-32 assembler support enhancements: unified ELF targets, support
3753 for SCO/Caldera platforms, fix for Cygwin shared build.
3756 *) Add support for FreeBSD on sparc64. As a consequence, support for
3757 FreeBSD on non-x86 processors is separate from x86 processors on
3758 the config script, much like the NetBSD support.
3759 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3761 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3763 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3766 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3767 code (06) was taken as the first octet of the session ID and the last
3768 octet was ignored consequently. As a result SSLv2 client side session
3769 caching could not have worked due to the session ID mismatch between
3771 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3775 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3776 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3780 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3781 seems that in spite of existing for more than a year, many application
3782 author have done nothing to provide the necessary callbacks, which
3783 means that this particular engine will not work properly anywhere.
3784 This is a very unfortunate situation which forces us, in the name
3785 of usability, to give the hw_ncipher.c a static lock, which is part
3787 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3788 appear in 0.9.8 or later. We EXPECT application authors to have
3789 dealt properly with this when 0.9.8 is released (unless we actually
3790 make such changes in the libcrypto locking code that changes will
3791 have to be made anyway).
3794 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3795 octets have been read, EOF or an error occurs. Without this change
3796 some truncated ASN1 structures will not produce an error.
3799 *) Disable Heimdal support, since it hasn't been fully implemented.
3800 Still give the possibility to force the use of Heimdal, but with
3801 warnings and a request that patches get sent to openssl-dev.
3804 *) Add the VC-CE target, introduce the WINCE sysname, and add
3805 INSTALL.WCE and appropriate conditionals to make it build.
3806 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3808 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3809 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3810 edit numbers of the version.
3811 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3813 *) Introduce safe string copy and catenation functions
3814 (BUF_strlcpy() and BUF_strlcat()).
3815 [Ben Laurie (CHATS) and Richard Levitte]
3817 *) Avoid using fixed-size buffers for one-line DNs.
3818 [Ben Laurie (CHATS)]
3820 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3821 resizing buffers containing secrets, and use where appropriate.
3822 [Ben Laurie (CHATS)]
3824 *) Avoid using fixed size buffers for configuration file location.
3825 [Ben Laurie (CHATS)]
3827 *) Avoid filename truncation for various CA files.
3828 [Ben Laurie (CHATS)]
3830 *) Use sizeof in preference to magic numbers.
3831 [Ben Laurie (CHATS)]
3833 *) Avoid filename truncation in cert requests.
3834 [Ben Laurie (CHATS)]
3836 *) Add assertions to check for (supposedly impossible) buffer
3838 [Ben Laurie (CHATS)]
3840 *) Don't cache truncated DNS entries in the local cache (this could
3841 potentially lead to a spoofing attack).
3842 [Ben Laurie (CHATS)]
3844 *) Fix various buffers to be large enough for hex/decimal
3845 representations in a platform independent manner.
3846 [Ben Laurie (CHATS)]
3848 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3849 resizing buffers containing secrets, and use where appropriate.
3850 [Ben Laurie (CHATS)]
3852 *) Add BIO_indent() to avoid much slightly worrying code to do
3854 [Ben Laurie (CHATS)]
3856 *) Convert sprintf()/BIO_puts() to BIO_printf().
3857 [Ben Laurie (CHATS)]
3859 *) buffer_gets() could terminate with the buffer only half
3861 [Ben Laurie (CHATS)]
3863 *) Add assertions to prevent user-supplied crypto functions from
3864 overflowing internal buffers by having large block sizes, etc.
3865 [Ben Laurie (CHATS)]
3867 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3869 [Ben Laurie (CHATS)]
3871 *) Eliminate unused copy of key in RC4.
3872 [Ben Laurie (CHATS)]
3874 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3875 [Ben Laurie (CHATS)]
3877 *) Fix off-by-one error in EGD path.
3878 [Ben Laurie (CHATS)]
3880 *) If RANDFILE path is too long, ignore instead of truncating.
3881 [Ben Laurie (CHATS)]
3883 *) Eliminate unused and incorrectly sized X.509 structure
3885 [Ben Laurie (CHATS)]
3887 *) Eliminate unused and dangerous function knumber().
3888 [Ben Laurie (CHATS)]
3890 *) Eliminate unused and dangerous structure, KSSL_ERR.
3891 [Ben Laurie (CHATS)]
3893 *) Protect against overlong session ID context length in an encoded
3894 session object. Since these are local, this does not appear to be
3896 [Ben Laurie (CHATS)]
3898 *) Change from security patch (see 0.9.6e below) that did not affect
3899 the 0.9.6 release series:
3901 Remote buffer overflow in SSL3 protocol - an attacker could
3902 supply an oversized master key in Kerberos-enabled versions.
3904 [Ben Laurie (CHATS)]
3906 *) Change the SSL kerb5 codes to match RFC 2712.
3909 *) Make -nameopt work fully for req and add -reqopt switch.
3910 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3912 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3913 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3915 *) Make sure tests can be performed even if the corresponding algorithms
3916 have been removed entirely. This was also the last step to make
3917 OpenSSL compilable with DJGPP under all reasonable conditions.
3918 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3920 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3921 to allow version independent disabling of normally unselected ciphers,
3922 which may be activated as a side-effect of selecting a single cipher.
3924 (E.g., cipher list string "RSA" enables ciphersuites that are left
3925 out of "ALL" because they do not provide symmetric encryption.
3926 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3927 [Lutz Jaenicke, Bodo Moeller]
3929 *) Add appropriate support for separate platform-dependent build
3930 directories. The recommended way to make a platform-dependent
3931 build directory is the following (tested on Linux), maybe with
3934 # Place yourself outside of the OpenSSL source tree. In
3935 # this example, the environment variable OPENSSL_SOURCE
3936 # is assumed to contain the absolute OpenSSL source directory.
3937 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3938 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3939 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3940 mkdir -p `dirname $F`
3941 ln -s $OPENSSL_SOURCE/$F $F
3944 To be absolutely sure not to disturb the source tree, a "make clean"
3945 is a good thing. If it isn't successfull, don't worry about it,
3946 it probably means the source directory is very clean.
3949 *) Make sure any ENGINE control commands make local copies of string
3950 pointers passed to them whenever necessary. Otherwise it is possible
3951 the caller may have overwritten (or deallocated) the original string
3952 data when a later ENGINE operation tries to use the stored values.
3953 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3955 *) Improve diagnostics in file reading and command-line digests.
3956 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3958 *) Add AES modes CFB and OFB to the object database. Correct an
3959 error in AES-CFB decryption.
3962 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3963 allows existing EVP_CIPHER_CTX structures to be reused after
3964 calling EVP_*Final(). This behaviour is used by encryption
3965 BIOs and some applications. This has the side effect that
3966 applications must explicitly clean up cipher contexts with
3967 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3970 *) Check the values of dna and dnb in bn_mul_recursive before calling
3971 bn_mul_comba (a non zero value means the a or b arrays do not contain
3972 n2 elements) and fallback to bn_mul_normal if either is not zero.
3975 *) Fix escaping of non-ASCII characters when using the -subj option
3976 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3979 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3980 form for "surname", serialNumber has no short form.
3981 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3982 therefore remove "mail" short name for "internet 7".
3983 The OID for unique identifiers in X509 certificates is
3984 x500UniqueIdentifier, not uniqueIdentifier.
3985 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3988 *) Add an "init" command to the ENGINE config module and auto initialize
3989 ENGINEs. Without any "init" command the ENGINE will be initialized
3990 after all ctrl commands have been executed on it. If init=1 the
3991 ENGINE is initailized at that point (ctrls before that point are run
3992 on the uninitialized ENGINE and after on the initialized one). If
3993 init=0 then the ENGINE will not be iniatialized at all.
3996 *) Fix the 'app_verify_callback' interface so that the user-defined
3997 argument is actually passed to the callback: In the
3998 SSL_CTX_set_cert_verify_callback() prototype, the callback
3999 declaration has been changed from
4002 int (*cb)(X509_STORE_CTX *,void *);
4003 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4004 i=s->ctx->app_verify_callback(&ctx)
4005 has been changed into
4006 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4008 To update applications using SSL_CTX_set_cert_verify_callback(),
4009 a dummy argument can be added to their callback functions.
4010 [D. K. Smetters <smetters@parc.xerox.com>]
4012 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4013 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4015 *) Add and OPENSSL_LOAD_CONF define which will cause
4016 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4017 This allows older applications to transparently support certain
4018 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4019 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4020 load the config file and OPENSSL_add_all_algorithms_conf() which will
4021 always load it have also been added.
4024 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4025 Adjust NIDs and EVP layer.
4026 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4028 *) Config modules support in openssl utility.
4030 Most commands now load modules from the config file,
4031 though in a few (such as version) this isn't done
4032 because it couldn't be used for anything.
4034 In the case of ca and req the config file used is
4035 the same as the utility itself: that is the -config
4036 command line option can be used to specify an
4040 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4041 use "openssl_conf" if filename is NULL use default openssl config file.
4044 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4045 config section name. Add a new flag to tolerate a missing config file
4046 and move code to CONF_modules_load_file().
4049 *) Support for crypto accelerator cards from Accelerated Encryption
4050 Processing, www.aep.ie. (Use engine 'aep')
4051 The support was copied from 0.9.6c [engine] and adapted/corrected
4052 to work with the new engine framework.
4053 [AEP Inc. and Richard Levitte]
4055 *) Support for SureWare crypto accelerator cards from Baltimore
4056 Technologies. (Use engine 'sureware')
4057 The support was copied from 0.9.6c [engine] and adapted
4058 to work with the new engine framework.
4061 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4062 make the newer ENGINE framework commands for the CHIL engine work.
4063 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4065 *) Make it possible to produce shared libraries on ReliantUNIX.
4066 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4068 *) Add the configuration target debug-linux-ppro.
4069 Make 'openssl rsa' use the general key loading routines
4070 implemented in apps.c, and make those routines able to
4071 handle the key format FORMAT_NETSCAPE and the variant
4073 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4075 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4076 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4078 *) Add -keyform to rsautl, and document -engine.
4079 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4081 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4082 BIO_R_NO_SUCH_FILE error code rather than the generic
4083 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4086 *) Add new functions
4088 ERR_peek_last_error_line
4089 ERR_peek_last_error_line_data.
4090 These are similar to
4093 ERR_peek_error_line_data,
4094 but report on the latest error recorded rather than the first one
4095 still in the error queue.
4096 [Ben Laurie, Bodo Moeller]
4098 *) default_algorithms option in ENGINE config module. This allows things
4100 default_algorithms = ALL
4101 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4104 *) Prelminary ENGINE config module.
4107 *) New experimental application configuration code.
4110 *) Change the AES code to follow the same name structure as all other
4111 symmetric ciphers, and behave the same way. Move everything to
4112 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4113 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4115 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4116 [Ben Laurie and Theo de Raadt]
4118 *) Add option to output public keys in req command.
4119 [Massimiliano Pala madwolf@openca.org]
4121 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4122 (up to about 10% better than before for P-192 and P-224).
4125 *) New functions/macros
4127 SSL_CTX_set_msg_callback(ctx, cb)
4128 SSL_CTX_set_msg_callback_arg(ctx, arg)
4129 SSL_set_msg_callback(ssl, cb)
4130 SSL_set_msg_callback_arg(ssl, arg)
4132 to request calling a callback function
4134 void cb(int write_p, int version, int content_type,
4135 const void *buf, size_t len, SSL *ssl, void *arg)
4137 whenever a protocol message has been completely received
4138 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4139 protocol version according to which the SSL library interprets
4140 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4141 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4142 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4143 specification (change_cipher_spec(20), alert(21), handshake(22)).
4144 'buf' and 'len' point to the actual message, 'ssl' to the
4145 SSL object, and 'arg' is the application-defined value set by
4146 SSL[_CTX]_set_msg_callback_arg().
4148 'openssl s_client' and 'openssl s_server' have new '-msg' options
4149 to enable a callback that displays all protocol messages.
4152 *) Change the shared library support so shared libraries are built as
4153 soon as the corresponding static library is finished, and thereby get
4154 openssl and the test programs linked against the shared library.
4155 This still only happens when the keyword "shard" has been given to
4156 the configuration scripts.
4158 NOTE: shared library support is still an experimental thing, and
4159 backward binary compatibility is still not guaranteed.
4160 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4162 *) Add support for Subject Information Access extension.
4163 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4165 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4166 additional bytes when new memory had to be allocated, not just
4167 when reusing an existing buffer.
4170 *) New command line and configuration option 'utf8' for the req command.
4171 This allows field values to be specified as UTF8 strings.
4174 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4175 runs for the former and machine-readable output for the latter.
4178 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4179 of the e-mail address in the DN (i.e., it will go into a certificate
4180 extension only). The new configuration file option 'email_in_dn = no'
4181 has the same effect.
4182 [Massimiliano Pala madwolf@openca.org]
4184 *) Change all functions with names starting with des_ to be starting
4185 with DES_ instead. Add wrappers that are compatible with libdes,
4186 but are named _ossl_old_des_*. Finally, add macros that map the
4187 des_* symbols to the corresponding _ossl_old_des_* if libdes
4188 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4189 desired, the des_* symbols will be mapped to DES_*, with one
4192 Since we provide two compatibility mappings, the user needs to
4193 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4194 compatibility is desired. The default (i.e., when that macro
4195 isn't defined) is OpenSSL 0.9.6c compatibility.
4197 There are also macros that enable and disable the support of old
4198 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4199 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4200 are defined, the default will apply: to support the old des routines.
4202 In either case, one must include openssl/des.h to get the correct
4203 definitions. Do not try to just include openssl/des_old.h, that
4206 NOTE: This is a major break of an old API into a new one. Software
4207 authors are encouraged to switch to the DES_ style functions. Some
4208 time in the future, des_old.h and the libdes compatibility functions
4209 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4210 default), and then completely removed.
4213 *) Test for certificates which contain unsupported critical extensions.
4214 If such a certificate is found during a verify operation it is
4215 rejected by default: this behaviour can be overridden by either
4216 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4217 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4218 X509_supported_extension() has also been added which returns 1 if a
4219 particular extension is supported.
4222 *) Modify the behaviour of EVP cipher functions in similar way to digests
4223 to retain compatibility with existing code.
4226 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4227 compatibility with existing code. In particular the 'ctx' parameter does
4228 not have to be to be initialized before the call to EVP_DigestInit() and
4229 it is tidied up after a call to EVP_DigestFinal(). New function
4230 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4231 EVP_MD_CTX_copy() changed to not require the destination to be
4232 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4233 requires the destination to be valid.
4235 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4236 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4239 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4240 so that complete 'Handshake' protocol structures are kept in memory
4241 instead of overwriting 'msg_type' and 'length' with 'body' data.
4244 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4245 [Massimo Santin via Richard Levitte]
4247 *) Major restructuring to the underlying ENGINE code. This includes
4248 reduction of linker bloat, separation of pure "ENGINE" manipulation
4249 (initialisation, etc) from functionality dealing with implementations
4250 of specific crypto iterfaces. This change also introduces integrated
4251 support for symmetric ciphers and digest implementations - so ENGINEs
4252 can now accelerate these by providing EVP_CIPHER and EVP_MD
4253 implementations of their own. This is detailed in crypto/engine/README
4254 as it couldn't be adequately described here. However, there are a few
4255 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4256 were changed in the original introduction of ENGINE code have now
4257 reverted back - the hooking from this code to ENGINE is now a good
4258 deal more passive and at run-time, operations deal directly with
4259 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4260 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4261 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4262 they were not being used by the framework as there is no concept of a
4263 BIGNUM_METHOD and they could not be generalised to the new
4264 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4265 ENGINE_cpy() has been removed as it cannot be consistently defined in
4269 *) Change ASN1_GENERALIZEDTIME_
projects / openssl.git / blob