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 TLS key material exporter from RFC 5705.
285 *) Add DTLS-SRTP negotiation from RFC 5764.
288 *) Add Next Protocol Negotiation,
289 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
290 disabled with a no-npn flag to config or Configure. Code donated
292 [Adam Langley <agl@google.com> and Ben Laurie]
294 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
295 NIST-P256, NIST-P521, with constant-time single point multiplication on
296 typical inputs. Compiler support for the nonstandard type __uint128_t is
297 required to use this (present in gcc 4.4 and later, for 64-bit builds).
298 Code made available under Apache License version 2.0.
300 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
301 line to include this in your build of OpenSSL, and run "make depend" (or
302 "make update"). This enables the following EC_METHODs:
304 EC_GFp_nistp224_method()
305 EC_GFp_nistp256_method()
306 EC_GFp_nistp521_method()
308 EC_GROUP_new_by_curve_name() will automatically use these (while
309 EC_GROUP_new_curve_GFp() currently prefers the more flexible
311 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
313 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
314 all platforms. Move ssize_t definition from e_os.h to the public
315 header file e_os2.h as it now appears in public header file cms.h
318 *) New -sigopt option to the ca, req and x509 utilities. Additional
319 signature parameters can be passed using this option and in
323 *) Add RSA PSS signing function. This will generate and set the
324 appropriate AlgorithmIdentifiers for PSS based on those in the
325 corresponding EVP_MD_CTX structure. No application support yet.
328 *) Support for companion algorithm specific ASN1 signing routines.
329 New function ASN1_item_sign_ctx() signs a pre-initialised
330 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
331 the appropriate parameters.
334 *) Add new algorithm specific ASN1 verification initialisation function
335 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
336 handling will be the same no matter what EVP_PKEY_METHOD is used.
337 Add a PSS handler to support verification of PSS signatures: checked
338 against a number of sample certificates.
341 *) Add signature printing for PSS. Add PSS OIDs.
342 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
344 *) Add algorithm specific signature printing. An individual ASN1 method
345 can now print out signatures instead of the standard hex dump.
347 More complex signatures (e.g. PSS) can print out more meaningful
348 information. Include DSA version that prints out the signature
352 *) Password based recipient info support for CMS library: implementing
356 *) Split password based encryption into PBES2 and PBKDF2 functions. This
357 neatly separates the code into cipher and PBE sections and is required
358 for some algorithms that split PBES2 into separate pieces (such as
362 *) Session-handling fixes:
363 - Fix handling of connections that are resuming with a session ID,
364 but also support Session Tickets.
365 - Fix a bug that suppressed issuing of a new ticket if the client
366 presented a ticket with an expired session.
367 - Try to set the ticket lifetime hint to something reasonable.
368 - Make tickets shorter by excluding irrelevant information.
369 - On the client side, don't ignore renewed tickets.
370 [Adam Langley, Bodo Moeller (Google)]
372 *) Fix PSK session representation.
375 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
377 This work was sponsored by Intel.
380 *) Add GCM support to TLS library. Some custom code is needed to split
381 the IV between the fixed (from PRF) and explicit (from TLS record)
382 portions. This adds all GCM ciphersuites supported by RFC5288 and
383 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
384 add a special AESGCM string for GCM only.
387 *) Expand range of ctrls for AES GCM. Permit setting invocation
388 field on decrypt and retrieval of invocation field only on encrypt.
391 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
392 As required by RFC5289 these ciphersuites cannot be used if for
393 versions of TLS earlier than 1.2.
396 *) For FIPS capable OpenSSL interpret a NULL default public key method
397 as unset and return the appopriate default but do *not* set the default.
398 This means we can return the appopriate method in applications that
399 swicth between FIPS and non-FIPS modes.
402 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
403 ENGINE is used then we cannot handle that in the FIPS module so we
404 keep original code iff non-FIPS operations are allowed.
407 *) Add -attime option to openssl utilities.
408 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
410 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
413 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
414 FIPS EC methods unconditionally for now.
417 *) New build option no-ec2m to disable characteristic 2 code.
420 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
421 all cases can be covered as some introduce binary incompatibilities.
424 *) Redirect RSA operations to FIPS module including keygen,
425 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
428 *) Add similar low level API blocking to ciphers.
431 *) Low level digest APIs are not approved in FIPS mode: any attempt
432 to use these will cause a fatal error. Applications that *really* want
433 to use them can use the private_* version instead.
436 *) Redirect cipher operations to FIPS module for FIPS builds.
439 *) Redirect digest operations to FIPS module for FIPS builds.
442 *) Update build system to add "fips" flag which will link in fipscanister.o
443 for static and shared library builds embedding a signature if needed.
446 *) Output TLS supported curves in preference order instead of numerical
447 order. This is currently hardcoded for the highest order curves first.
448 This should be configurable so applications can judge speed vs strength.
451 *) Add TLS v1.2 server support for client authentication.
454 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
458 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
459 FIPS modules versions.
462 *) Add TLS v1.2 client side support for client authentication. Keep cache
463 of handshake records longer as we don't know the hash algorithm to use
464 until after the certificate request message is received.
467 *) Initial TLS v1.2 client support. Add a default signature algorithms
468 extension including all the algorithms we support. Parse new signature
469 format in client key exchange. Relax some ECC signing restrictions for
470 TLS v1.2 as indicated in RFC5246.
473 *) Add server support for TLS v1.2 signature algorithms extension. Switch
474 to new signature format when needed using client digest preference.
475 All server ciphersuites should now work correctly in TLS v1.2. No client
476 support yet and no support for client certificates.
479 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
480 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
481 ciphersuites. At present only RSA key exchange ciphersuites work with
482 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
483 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
484 and version checking.
487 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
488 with this defined it will not be affected by any changes to ssl internal
489 structures. Add several utility functions to allow openssl application
490 to work with OPENSSL_NO_SSL_INTERN defined.
494 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
496 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
499 *) Permit abbreviated handshakes when renegotiating using the function
500 SSL_renegotiate_abbreviated().
501 [Robin Seggelmann <seggelmann@fh-muenster.de>]
503 *) Add call to ENGINE_register_all_complete() to
504 ENGINE_load_builtin_engines(), so some implementations get used
505 automatically instead of needing explicit application support.
508 *) Add support for TLS key exporter as described in RFC5705.
509 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
511 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
512 a few changes are required:
514 Add SSL_OP_NO_TLSv1_1 flag.
516 Update version checking logic to handle version 1.1.
517 Add explicit IV handling (ported from DTLS code).
518 Add command line options to s_client/s_server.
521 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
523 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
524 of the Vaudenay padding oracle attack on CBC mode encryption
525 which enables an efficient plaintext recovery attack against
526 the OpenSSL implementation of DTLS. Their attack exploits timing
527 differences arising during decryption processing. A research
528 paper describing this attack can be found at:
529 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
530 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
531 Security Group at Royal Holloway, University of London
532 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
533 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
534 for preparing the fix. (CVE-2011-4108)
535 [Robin Seggelmann, Michael Tuexen]
537 *) Clear bytes used for block padding of SSL 3.0 records.
539 [Adam Langley (Google)]
541 *) Only allow one SGC handshake restart for SSL/TLS. (CVE-2011-4619)
542 [Adam Langley (Google)]
544 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
545 [Andrey Kulikov <amdeich@gmail.com>]
547 *) Prevent malformed RFC3779 data triggering an assertion failure.
548 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
549 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
550 [Rob Austein <sra@hactrn.net>]
552 *) Improved PRNG seeding for VOS.
553 [Paul Green <Paul.Green@stratus.com>]
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 [4 Jan 2012]
1485 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1486 of the Vaudenay padding oracle attack on CBC mode encryption
1487 which enables an efficient plaintext recovery attack against
1488 the OpenSSL implementation of DTLS. Their attack exploits timing
1489 differences arising during decryption processing. A research
1490 paper describing this attack can be found at:
1491 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1492 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1493 Security Group at Royal Holloway, University of London
1494 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1495 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1496 for preparing the fix. (CVE-2011-4108)
1497 [Robin Seggelmann, Michael Tuexen]
1499 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1500 [Ben Laurie, Kasper <ekasper@google.com>]
1502 *) Clear bytes used for block padding of SSL 3.0 records.
1504 [Adam Langley (Google)]
1506 *) Only allow one SGC handshake restart for SSL/TLS. (CVE-2011-4619)
1507 [Adam Langley (Google)]
1509 *) Prevent malformed RFC3779 data triggering an assertion failure.
1510 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1511 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1512 [Rob Austein <sra@hactrn.net>]
1514 *) Fix ssl_ciph.c set-up race.
1515 [Adam Langley (Google)]
1517 *) Fix spurious failures in ecdsatest.c.
1518 [Emilia Käsper (Google)]
1520 *) Fix the BIO_f_buffer() implementation (which was mixing different
1521 interpretations of the '..._len' fields).
1522 [Adam Langley (Google)]
1524 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1525 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1526 threads won't reuse the same blinding coefficients.
1528 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1529 lock to call BN_BLINDING_invert_ex, and avoids one use of
1530 BN_BLINDING_update for each BN_BLINDING structure (previously,
1531 the last update always remained unused).
1532 [Emilia Käsper (Google)]
1534 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1535 for multi-threaded use of ECDH.
1536 [Adam Langley (Google)]
1538 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1541 *) Add protection against ECDSA timing attacks as mentioned in the paper
1542 by Billy Bob Brumley and Nicola Tuveri, see:
1544 http://eprint.iacr.org/2011/232.pdf
1546 [Billy Bob Brumley and Nicola Tuveri]
1548 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1550 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1551 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1553 *) Fix bug in string printing code: if *any* escaping is enabled we must
1554 escape the escape character (backslash) or the resulting string is
1558 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1560 *) Disable code workaround for ancient and obsolete Netscape browsers
1561 and servers: an attacker can use it in a ciphersuite downgrade attack.
1562 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1565 *) Fixed J-PAKE implementation error, originally discovered by
1566 Sebastien Martini, further info and confirmation from Stefan
1567 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1570 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1572 *) Fix extension code to avoid race conditions which can result in a buffer
1573 overrun vulnerability: resumed sessions must not be modified as they can
1574 be shared by multiple threads. CVE-2010-3864
1577 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1580 *) Don't reencode certificate when calculating signature: cache and use
1581 the original encoding instead. This makes signature verification of
1582 some broken encodings work correctly.
1585 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1586 is also one of the inputs.
1587 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1589 *) Don't repeatedly append PBE algorithms to table if they already exist.
1590 Sort table on each new add. This effectively makes the table read only
1591 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1595 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1597 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1600 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1601 access or freeing data twice (CVE-2010-0742)
1602 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1604 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1605 common in certificates and some applications which only call
1606 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1610 Reduce copying into .apps and .test in makevms.com
1611 Don't try to use blank CA certificate in CA.com
1612 Allow use of C files from original directories in maketests.com
1613 [Steven M. Schweda" <sms@antinode.info>]
1615 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1617 *) When rejecting SSL/TLS records due to an incorrect version number, never
1618 update s->server with a new major version number. As of
1619 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1620 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1621 the previous behavior could result in a read attempt at NULL when
1622 receiving specific incorrect SSL/TLS records once record payload
1623 protection is active. (CVE-2010-0740)
1624 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1626 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1627 could be crashed if the relevant tables were not present (e.g. chrooted).
1628 [Tomas Hoger <thoger@redhat.com>]
1630 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1632 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1633 [Martin Olsson, Neel Mehta]
1635 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1636 accommodate for stack sorting, always a write lock!).
1639 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1640 excessive delays in the RAND_poll(): over a minute. As a workaround
1641 include a time check in the inner Heap32Next loop too.
1644 *) The code that handled flushing of data in SSL/TLS originally used the
1645 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1646 the problem outlined in PR#1949. The fix suggested there however can
1647 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1648 of Apache). So instead simplify the code to flush unconditionally.
1649 This should be fine since flushing with no data to flush is a no op.
1652 *) Handle TLS versions 2.0 and later properly and correctly use the
1653 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1654 off ancient servers have a habit of sticking around for a while...
1657 *) Modify compression code so it frees up structures without using the
1658 ex_data callbacks. This works around a problem where some applications
1659 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1660 restarting) then use compression (e.g. SSL with compression) later.
1661 This results in significant per-connection memory leaks and
1662 has caused some security issues including CVE-2008-1678 and
1666 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1667 change when encrypting or decrypting.
1670 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1671 connect and renegotiate with servers which do not support RI.
1672 Until RI is more widely deployed this option is enabled by default.
1675 *) Add "missing" ssl ctrls to clear options and mode.
1678 *) If client attempts to renegotiate and doesn't support RI respond with
1679 a no_renegotiation alert as required by RFC5746. Some renegotiating
1680 TLS clients will continue a connection gracefully when they receive
1681 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1682 waiting for a server hello which it will never receive. Now we treat a
1683 received no_renegotiation alert as a fatal error. This is because
1684 applications requesting a renegotiation might well expect it to succeed
1685 and would have no code in place to handle the server denying it so the
1686 only safe thing to do is to terminate the connection.
1689 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1690 peer supports secure renegotiation and 0 otherwise. Print out peer
1691 renegotiation support in s_client/s_server.
1694 *) Replace the highly broken and deprecated SPKAC certification method with
1695 the updated NID creation version. This should correctly handle UTF8.
1698 *) Implement RFC5746. Re-enable renegotiation but require the extension
1699 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1700 turns out to be a bad idea. It has been replaced by
1701 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1702 SSL_CTX_set_options(). This is really not recommended unless you
1703 know what you are doing.
1704 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1706 *) Fixes to stateless session resumption handling. Use initial_ctx when
1707 issuing and attempting to decrypt tickets in case it has changed during
1708 servername handling. Use a non-zero length session ID when attempting
1709 stateless session resumption: this makes it possible to determine if
1710 a resumption has occurred immediately after receiving server hello
1711 (several places in OpenSSL subtly assume this) instead of later in
1715 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1716 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1717 fixes for a few places where the return code is not checked
1719 [Julia Lawall <julia@diku.dk>]
1721 *) Add --strict-warnings option to Configure script to include devteam
1722 warnings in other configurations.
1725 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1726 makes it possible to install openssl libraries in locations which
1727 have names other than "lib", for example "/usr/lib64" which some
1729 [Steve Henson, based on patch from Jeremy Utley]
1731 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1732 X690 8.9.12 and can produce some misleading textual output of OIDs.
1733 [Steve Henson, reported by Dan Kaminsky]
1735 *) Delete MD2 from algorithm tables. This follows the recommendation in
1736 several standards that it is not used in new applications due to
1737 several cryptographic weaknesses. For binary compatibility reasons
1738 the MD2 API is still compiled in by default.
1741 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1745 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1746 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1748 [Guenter <lists@gknw.net>]
1750 *) Fix the server certificate chain building code to use X509_verify_cert(),
1751 it used to have an ad-hoc builder which was unable to cope with anything
1752 other than a simple chain.
1753 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1755 *) Don't check self signed certificate signatures in X509_verify_cert()
1756 by default (a flag can override this): it just wastes time without
1757 adding any security. As a useful side effect self signed root CAs
1758 with non-FIPS digests are now usable in FIPS mode.
1761 *) In dtls1_process_out_of_seq_message() the check if the current message
1762 is already buffered was missing. For every new message was memory
1763 allocated, allowing an attacker to perform an denial of service attack
1764 with sending out of seq handshake messages until there is no memory
1765 left. Additionally every future messege was buffered, even if the
1766 sequence number made no sense and would be part of another handshake.
1767 So only messages with sequence numbers less than 10 in advance will be
1768 buffered. (CVE-2009-1378)
1769 [Robin Seggelmann, discovered by Daniel Mentz]
1771 *) Records are buffered if they arrive with a future epoch to be
1772 processed after finishing the corresponding handshake. There is
1773 currently no limitation to this buffer allowing an attacker to perform
1774 a DOS attack with sending records with future epochs until there is no
1775 memory left. This patch adds the pqueue_size() function to detemine
1776 the size of a buffer and limits the record buffer to 100 entries.
1778 [Robin Seggelmann, discovered by Daniel Mentz]
1780 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1781 parent structure is freed. (CVE-2009-1379)
1784 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1785 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1788 [Ilya O. <vrghost@gmail.com>]
1790 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1792 *) Disable renegotiation completely - this fixes a severe security
1793 problem (CVE-2009-3555) at the cost of breaking all
1794 renegotiation. Renegotiation can be re-enabled by setting
1795 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1796 run-time. This is really not recommended unless you know what
1800 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1802 *) Don't set val to NULL when freeing up structures, it is freed up by
1803 underlying code. If sizeof(void *) > sizeof(long) this can result in
1804 zeroing past the valid field. (CVE-2009-0789)
1805 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1807 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1808 checked correctly. This would allow some invalid signed attributes to
1809 appear to verify correctly. (CVE-2009-0591)
1810 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1812 *) Reject UniversalString and BMPString types with invalid lengths. This
1813 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1814 a legal length. (CVE-2009-0590)
1817 *) Set S/MIME signing as the default purpose rather than setting it
1818 unconditionally. This allows applications to override it at the store
1822 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1823 to handle some structures.
1826 *) Improve efficiency of mem_gets: don't search whole buffer each time
1828 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1830 *) New -hex option for openssl rand.
1833 *) Print out UTF8String and NumericString when parsing ASN1.
1836 *) Support NumericString type for name components.
1839 *) Allow CC in the environment to override the automatically chosen
1840 compiler. Note that nothing is done to ensure flags work with the
1844 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1846 *) Properly check EVP_VerifyFinal() and similar return values
1848 [Ben Laurie, Bodo Moeller, Google Security Team]
1850 *) Enable TLS extensions by default.
1853 *) Allow the CHIL engine to be loaded, whether the application is
1854 multithreaded or not. (This does not release the developer from the
1855 obligation to set up the dynamic locking callbacks.)
1856 [Sander Temme <sander@temme.net>]
1858 *) Use correct exit code if there is an error in dgst command.
1859 [Steve Henson; problem pointed out by Roland Dirlewanger]
1861 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1862 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1865 *) Add experimental JPAKE support, including demo authentication in
1866 s_client and s_server.
1869 *) Set the comparison function in v3_addr_canonize().
1870 [Rob Austein <sra@hactrn.net>]
1872 *) Add support for XMPP STARTTLS in s_client.
1873 [Philip Paeps <philip@freebsd.org>]
1875 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1876 to ensure that even with this option, only ciphersuites in the
1877 server's preference list will be accepted. (Note that the option
1878 applies only when resuming a session, so the earlier behavior was
1879 just about the algorithm choice for symmetric cryptography.)
1882 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1884 *) Fix NULL pointer dereference if a DTLS server received
1885 ChangeCipherSpec as first record (CVE-2009-1386).
1888 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1889 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1892 *) The fix in 0.9.8c that supposedly got rid of unsafe
1893 double-checked locking was incomplete for RSA blinding,
1894 addressing just one layer of what turns out to have been
1895 doubly unsafe triple-checked locking.
1897 So now fix this for real by retiring the MONT_HELPER macro
1898 in crypto/rsa/rsa_eay.c.
1900 [Bodo Moeller; problem pointed out by Marius Schilder]
1902 *) Various precautionary measures:
1904 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1906 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1907 (NB: This would require knowledge of the secret session ticket key
1908 to exploit, in which case you'd be SOL either way.)
1910 - Change bn_nist.c so that it will properly handle input BIGNUMs
1911 outside the expected range.
1913 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1916 [Neel Mehta, Bodo Moeller]
1918 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1919 the load fails. Useful for distros.
1920 [Ben Laurie and the FreeBSD team]
1922 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1925 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1928 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1930 This work was sponsored by Logica.
1933 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1934 keystores. Support for SSL/TLS client authentication too.
1935 Not compiled unless enable-capieng specified to Configure.
1937 This work was sponsored by Logica.
1940 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1941 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1942 attribute creation routines such as certifcate requests and PKCS#12
1946 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1948 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1949 handshake which could lead to a cilent crash as found using the
1950 Codenomicon TLS test suite (CVE-2008-1672)
1951 [Steve Henson, Mark Cox]
1953 *) Fix double free in TLS server name extensions which could lead to
1954 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1957 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1959 Clear the error queue to ensure that error entries left from
1960 older function calls do not interfere with the correct operation.
1961 [Lutz Jaenicke, Erik de Castro Lopo]
1963 *) Remove root CA certificates of commercial CAs:
1965 The OpenSSL project does not recommend any specific CA and does not
1966 have any policy with respect to including or excluding any CA.
1967 Therefore it does not make any sense to ship an arbitrary selection
1968 of root CA certificates with the OpenSSL software.
1971 *) RSA OAEP patches to fix two separate invalid memory reads.
1972 The first one involves inputs when 'lzero' is greater than
1973 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1974 before the beginning of from). The second one involves inputs where
1975 the 'db' section contains nothing but zeroes (there is a one-byte
1976 invalid read after the end of 'db').
1977 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1979 *) Partial backport from 0.9.9-dev:
1981 Introduce bn_mul_mont (dedicated Montgomery multiplication
1982 procedure) as a candidate for BIGNUM assembler implementation.
1983 While 0.9.9-dev uses assembler for various architectures, only
1984 x86_64 is available by default here in the 0.9.8 branch, and
1985 32-bit x86 is available through a compile-time setting.
1987 To try the 32-bit x86 assembler implementation, use Configure
1988 option "enable-montasm" (which exists only for this backport).
1990 As "enable-montasm" for 32-bit x86 disclaims code stability
1991 anyway, in this constellation we activate additional code
1992 backported from 0.9.9-dev for further performance improvements,
1993 namely BN_from_montgomery_word. (To enable this otherwise,
1994 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1996 [Andy Polyakov (backport partially by Bodo Moeller)]
1998 *) Add TLS session ticket callback. This allows an application to set
1999 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2000 values. This is useful for key rollover for example where several key
2001 sets may exist with different names.
2004 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2005 This was broken until now in 0.9.8 releases, such that the only way
2006 a registered ENGINE could be used (assuming it initialises
2007 successfully on the host) was to explicitly set it as the default
2008 for the relevant algorithms. This is in contradiction with 0.9.7
2009 behaviour and the documentation. With this fix, when an ENGINE is
2010 registered into a given algorithm's table of implementations, the
2011 'uptodate' flag is reset so that auto-discovery will be used next
2012 time a new context for that algorithm attempts to select an
2014 [Ian Lister (tweaked by Geoff Thorpe)]
2016 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2017 implemention in the following ways:
2019 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2022 Lack of BER streaming support means one pass streaming processing is
2023 only supported if data is detached: setting the streaming flag is
2024 ignored for embedded content.
2026 CMS support is disabled by default and must be explicitly enabled
2027 with the enable-cms configuration option.
2030 *) Update the GMP engine glue to do direct copies between BIGNUM and
2031 mpz_t when openssl and GMP use the same limb size. Otherwise the
2032 existing "conversion via a text string export" trick is still used.
2033 [Paul Sheer <paulsheer@gmail.com>]
2035 *) Zlib compression BIO. This is a filter BIO which compressed and
2036 uncompresses any data passed through it.
2039 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2040 RFC3394 compatible AES key wrapping.
2043 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2044 sets string data without copying. X509_ALGOR_set0() and
2045 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2046 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2047 from an X509_ATTRIBUTE structure optionally checking it occurs only
2048 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2052 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2053 to get the expected BN_FLG_CONSTTIME behavior.
2054 [Bodo Moeller (Google)]
2058 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2059 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2060 - added some more tests to do_tests.pl
2061 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2062 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2063 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2064 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2065 - various changes to netware.pl to enable gcc-cross builds on Win32
2067 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2068 - various changes to fix missing prototype warnings
2069 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2070 - added AES, WHIRLPOOL and CPUID assembler code to build files
2071 - added missing AES assembler make rules to mk1mf.pl
2072 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2073 [Guenter Knauf <eflash@gmx.net>]
2075 *) Implement certificate status request TLS extension defined in RFC3546.
2076 A client can set the appropriate parameters and receive the encoded
2077 OCSP response via a callback. A server can query the supplied parameters
2078 and set the encoded OCSP response in the callback. Add simplified examples
2079 to s_client and s_server.
2082 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2084 *) Fix various bugs:
2085 + Binary incompatibility of ssl_ctx_st structure
2086 + DTLS interoperation with non-compliant servers
2087 + Don't call get_session_cb() without proposed session
2088 + Fix ia64 assembler code
2089 [Andy Polyakov, Steve Henson]
2091 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2093 *) DTLS Handshake overhaul. There were longstanding issues with
2094 OpenSSL DTLS implementation, which were making it impossible for
2095 RFC 4347 compliant client to communicate with OpenSSL server.
2096 Unfortunately just fixing these incompatibilities would "cut off"
2097 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2098 server keeps tolerating non RFC compliant syntax. The opposite is
2099 not true, 0.9.8f client can not communicate with earlier server.
2100 This update even addresses CVE-2007-4995.
2103 *) Changes to avoid need for function casts in OpenSSL: some compilers
2104 (gcc 4.2 and later) reject their use.
2105 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2108 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2109 RFC4507bis. The encrypted ticket format is an encrypted encoded
2110 SSL_SESSION structure, that way new session features are automatically
2113 If a client application caches session in an SSL_SESSION structure
2114 support is transparent because tickets are now stored in the encoded
2117 The SSL_CTX structure automatically generates keys for ticket
2118 protection in servers so again support should be possible
2119 with no application modification.
2121 If a client or server wishes to disable RFC4507 support then the option
2122 SSL_OP_NO_TICKET can be set.
2124 Add a TLS extension debugging callback to allow the contents of any client
2125 or server extensions to be examined.
2127 This work was sponsored by Google.
2130 *) Add initial support for TLS extensions, specifically for the server_name
2131 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2132 have new members for a host name. The SSL data structure has an
2133 additional member SSL_CTX *initial_ctx so that new sessions can be
2134 stored in that context to allow for session resumption, even after the
2135 SSL has been switched to a new SSL_CTX in reaction to a client's
2136 server_name extension.
2138 New functions (subject to change):
2140 SSL_get_servername()
2141 SSL_get_servername_type()
2144 New CTRL codes and macros (subject to change):
2146 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2147 - SSL_CTX_set_tlsext_servername_callback()
2148 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2149 - SSL_CTX_set_tlsext_servername_arg()
2150 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2152 openssl s_client has a new '-servername ...' option.
2154 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2155 '-key2 ...', '-servername_fatal' (subject to change). This allows
2156 testing the HostName extension for a specific single host name ('-cert'
2157 and '-key' remain fallbacks for handshakes without HostName
2158 negotiation). If the unrecogninzed_name alert has to be sent, this by
2159 default is a warning; it becomes fatal with the '-servername_fatal'
2162 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2164 *) Add AES and SSE2 assembly language support to VC++ build.
2167 *) Mitigate attack on final subtraction in Montgomery reduction.
2170 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2171 (which previously caused an internal error).
2174 *) Squeeze another 10% out of IGE mode when in != out.
2177 *) AES IGE mode speedup.
2178 [Dean Gaudet (Google)]
2180 *) Add the Korean symmetric 128-bit cipher SEED (see
2181 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2182 add SEED ciphersuites from RFC 4162:
2184 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2185 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2186 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2187 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2189 To minimize changes between patchlevels in the OpenSSL 0.9.8
2190 series, SEED remains excluded from compilation unless OpenSSL
2191 is configured with 'enable-seed'.
2192 [KISA, Bodo Moeller]
2194 *) Mitigate branch prediction attacks, which can be practical if a
2195 single processor is shared, allowing a spy process to extract
2196 information. For detailed background information, see
2197 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2198 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2199 and Necessary Software Countermeasures"). The core of the change
2200 are new versions BN_div_no_branch() and
2201 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2202 respectively, which are slower, but avoid the security-relevant
2203 conditional branches. These are automatically called by BN_div()
2204 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2205 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2206 remove a conditional branch.
2208 BN_FLG_CONSTTIME is the new name for the previous
2209 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2210 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2211 in the exponent causes BN_mod_exp_mont() to use the alternative
2212 implementation in BN_mod_exp_mont_consttime().) The old name
2213 remains as a deprecated alias.
2215 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2216 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2217 constant-time implementations for more than just exponentiation.
2218 Here too the old name is kept as a deprecated alias.
2220 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2221 the BN_BLINDING structure gets an independent copy of the
2222 modulus. This means that the previous "BIGNUM *m" argument to
2223 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2224 essentially becomes "const BIGNUM *m", although we can't actually
2225 change this in the header file before 0.9.9. It allows
2226 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2227 enable BN_FLG_CONSTTIME.
2229 [Matthew D Wood (Intel Corp)]
2231 *) In the SSL/TLS server implementation, be strict about session ID
2232 context matching (which matters if an application uses a single
2233 external cache for different purposes). Previously,
2234 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2235 set. This did ensure strict client verification, but meant that,
2236 with applications using a single external cache for quite
2237 different requirements, clients could circumvent ciphersuite
2238 restrictions for a given session ID context by starting a session
2239 in a different context.
2242 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2243 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2244 authentication-only ciphersuites.
2247 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2248 not complete and could lead to a possible single byte overflow
2249 (CVE-2007-5135) [Ben Laurie]
2251 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2253 *) Since AES128 and AES256 (and similarly Camellia128 and
2254 Camellia256) share a single mask bit in the logic of
2255 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2256 kludge to work properly if AES128 is available and AES256 isn't
2257 (or if Camellia128 is available and Camellia256 isn't).
2260 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2261 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2262 When a point or a seed is encoded in a BIT STRING, we need to
2263 prevent the removal of trailing zero bits to get the proper DER
2264 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2265 of a NamedBitList, for which trailing 0 bits need to be removed.)
2268 *) Have SSL/TLS server implementation tolerate "mismatched" record
2269 protocol version while receiving ClientHello even if the
2270 ClientHello is fragmented. (The server can't insist on the
2271 particular protocol version it has chosen before the ServerHello
2272 message has informed the client about his choice.)
2275 *) Add RFC 3779 support.
2276 [Rob Austein for ARIN, Ben Laurie]
2278 *) Load error codes if they are not already present instead of using a
2279 static variable. This allows them to be cleanly unloaded and reloaded.
2280 Improve header file function name parsing.
2283 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2284 or CAPABILITY handshake as required by RFCs.
2287 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2289 *) Introduce limits to prevent malicious keys being able to
2290 cause a denial of service. (CVE-2006-2940)
2291 [Steve Henson, Bodo Moeller]
2293 *) Fix ASN.1 parsing of certain invalid structures that can result
2294 in a denial of service. (CVE-2006-2937) [Steve Henson]
2296 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2297 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2299 *) Fix SSL client code which could crash if connecting to a
2300 malicious SSLv2 server. (CVE-2006-4343)
2301 [Tavis Ormandy and Will Drewry, Google Security Team]
2303 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2304 match only those. Before that, "AES256-SHA" would be interpreted
2305 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2306 the same strength classification in 0.9.7h) as we currently only
2307 have a single AES bit in the ciphersuite description bitmap.
2308 That change, however, also applied to ciphersuite strings such as
2309 "RC4-MD5" that intentionally matched multiple ciphersuites --
2310 namely, SSL 2.0 ciphersuites in addition to the more common ones
2311 from SSL 3.0/TLS 1.0.
2313 So we change the selection algorithm again: Naming an explicit
2314 ciphersuite selects this one ciphersuite, and any other similar
2315 ciphersuite (same bitmap) from *other* protocol versions.
2316 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2317 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2319 Since SSL 2.0 does not have any ciphersuites for which the
2320 128/256 bit distinction would be relevant, this works for now.
2321 The proper fix will be to use different bits for AES128 and
2322 AES256, which would have avoided the problems from the beginning;
2323 however, bits are scarce, so we can only do this in a new release
2324 (not just a patchlevel) when we can change the SSL_CIPHER
2325 definition to split the single 'unsigned long mask' bitmap into
2326 multiple values to extend the available space.
2330 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2332 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2333 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2335 *) Add AES IGE and biIGE modes.
2338 *) Change the Unix randomness entropy gathering to use poll() when
2339 possible instead of select(), since the latter has some
2340 undesirable limitations.
2341 [Darryl Miles via Richard Levitte and Bodo Moeller]
2343 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2344 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2345 cannot be implicitly activated as part of, e.g., the "AES" alias.
2346 However, please upgrade to OpenSSL 0.9.9[-dev] for
2347 non-experimental use of the ECC ciphersuites to get TLS extension
2348 support, which is required for curve and point format negotiation
2349 to avoid potential handshake problems.
2352 *) Disable rogue ciphersuites:
2354 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2355 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2356 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2358 The latter two were purportedly from
2359 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2362 Also deactivate the remaining ciphersuites from
2363 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2364 unofficial, and the ID has long expired.
2367 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2368 dual-core machines) and other potential thread-safety issues.
2371 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2372 versions), which is now available for royalty-free use
2373 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2374 Also, add Camellia TLS ciphersuites from RFC 4132.
2376 To minimize changes between patchlevels in the OpenSSL 0.9.8
2377 series, Camellia remains excluded from compilation unless OpenSSL
2378 is configured with 'enable-camellia'.
2381 *) Disable the padding bug check when compression is in use. The padding
2382 bug check assumes the first packet is of even length, this is not
2383 necessarily true if compresssion is enabled and can result in false
2384 positives causing handshake failure. The actual bug test is ancient
2385 code so it is hoped that implementations will either have fixed it by
2386 now or any which still have the bug do not support compression.
2389 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2391 *) When applying a cipher rule check to see if string match is an explicit
2392 cipher suite and only match that one cipher suite if it is.
2395 *) Link in manifests for VC++ if needed.
2396 [Austin Ziegler <halostatue@gmail.com>]
2398 *) Update support for ECC-based TLS ciphersuites according to
2399 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2400 TLS extensions, which are supported starting with the 0.9.9
2401 branch, not in the OpenSSL 0.9.8 branch).
2404 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2405 opaque EVP_CIPHER_CTX handling.
2408 *) Fixes and enhancements to zlib compression code. We now only use
2409 "zlib1.dll" and use the default __cdecl calling convention on Win32
2410 to conform with the standards mentioned here:
2411 http://www.zlib.net/DLL_FAQ.txt
2412 Static zlib linking now works on Windows and the new --with-zlib-include
2413 --with-zlib-lib options to Configure can be used to supply the location
2414 of the headers and library. Gracefully handle case where zlib library
2418 *) Several fixes and enhancements to the OID generation code. The old code
2419 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2420 handle numbers larger than ULONG_MAX, truncated printing and had a
2421 non standard OBJ_obj2txt() behaviour.
2424 *) Add support for building of engines under engine/ as shared libraries
2425 under VC++ build system.
2428 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2429 Hopefully, we will not see any false combination of paths any more.
2432 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2434 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2435 (part of SSL_OP_ALL). This option used to disable the
2436 countermeasure against man-in-the-middle protocol-version
2437 rollback in the SSL 2.0 server implementation, which is a bad
2438 idea. (CVE-2005-2969)
2440 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2441 for Information Security, National Institute of Advanced Industrial
2442 Science and Technology [AIST], Japan)]
2444 *) Add two function to clear and return the verify parameter flags.
2447 *) Keep cipherlists sorted in the source instead of sorting them at
2448 runtime, thus removing the need for a lock.
2451 *) Avoid some small subgroup attacks in Diffie-Hellman.
2452 [Nick Mathewson and Ben Laurie]
2454 *) Add functions for well-known primes.
2457 *) Extended Windows CE support.
2458 [Satoshi Nakamura and Andy Polyakov]
2460 *) Initialize SSL_METHOD structures at compile time instead of during
2461 runtime, thus removing the need for a lock.
2464 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2465 attempting to decrypt each encrypted key in turn. Add support to
2469 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2471 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2474 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2477 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2478 key into the same file any more.
2481 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2484 *) Add -utf8 command line and config file option to 'ca'.
2485 [Stefan <stf@udoma.org]
2487 *) Removed the macro des_crypt(), as it seems to conflict with some
2488 libraries. Use DES_crypt().
2491 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2492 involves renaming the source and generated shared-libs for
2493 both. The engines will accept the corrected or legacy ids
2494 ('ncipher' and '4758_cca' respectively) when binding. NB,
2495 this only applies when building 'shared'.
2496 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2498 *) Add attribute functions to EVP_PKEY structure. Modify
2499 PKCS12_create() to recognize a CSP name attribute and
2500 use it. Make -CSP option work again in pkcs12 utility.
2503 *) Add new functionality to the bn blinding code:
2504 - automatic re-creation of the BN_BLINDING parameters after
2505 a fixed number of uses (currently 32)
2506 - add new function for parameter creation
2507 - introduce flags to control the update behaviour of the
2508 BN_BLINDING parameters
2509 - hide BN_BLINDING structure
2510 Add a second BN_BLINDING slot to the RSA structure to improve
2511 performance when a single RSA object is shared among several
2515 *) Add support for DTLS.
2516 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2518 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2519 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2522 *) Remove buggy and incompletet DH cert support from
2523 ssl/ssl_rsa.c and ssl/s3_both.c
2526 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2527 the apps/openssl applications.
2530 *) Compile clean with "-Wall -Wmissing-prototypes
2531 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2532 DEBUG_SAFESTACK must also be set.
2535 *) Change ./Configure so that certain algorithms can be disabled by default.
2536 The new counterpiece to "no-xxx" is "enable-xxx".
2538 The patented RC5 and MDC2 algorithms will now be disabled unless
2539 "enable-rc5" and "enable-mdc2", respectively, are specified.
2541 (IDEA remains enabled despite being patented. This is because IDEA
2542 is frequently required for interoperability, and there is no license
2543 fee for non-commercial use. As before, "no-idea" can be used to
2544 avoid this algorithm.)
2548 *) Add processing of proxy certificates (see RFC 3820). This work was
2549 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2550 EGEE (Enabling Grids for E-science in Europe).
2553 *) RC4 performance overhaul on modern architectures/implementations, such
2554 as Intel P4, IA-64 and AMD64.
2557 *) New utility extract-section.pl. This can be used specify an alternative
2558 section number in a pod file instead of having to treat each file as
2559 a separate case in Makefile. This can be done by adding two lines to the
2562 =for comment openssl_section:XXX
2564 The blank line is mandatory.
2568 *) New arguments -certform, -keyform and -pass for s_client and s_server
2569 to allow alternative format key and certificate files and passphrase
2573 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2574 update associated structures and add various utility functions.
2576 Add new policy related verify parameters, include policy checking in
2577 standard verify code. Enhance 'smime' application with extra parameters
2578 to support policy checking and print out.
2581 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2582 Nehemiah processors. These extensions support AES encryption in hardware
2583 as well as RNG (though RNG support is currently disabled).
2584 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2586 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2589 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2590 [Andy Polyakov and a number of other people]
2592 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2593 implementation contributed by IBM.
2594 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2596 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2597 exponent rather than 'unsigned long'. There is a corresponding change to
2598 the new 'rsa_keygen' element of the RSA_METHOD structure.
2599 [Jelte Jansen, Geoff Thorpe]
2601 *) Functionality for creating the initial serial number file is now
2602 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2604 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2605 number file to 1, which is bound to cause problems. To avoid
2606 the problems while respecting compatibility between different 0.9.7
2607 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2608 CA.pl for serial number initialization. With the new release 0.9.8,
2609 we can fix the problem directly in the 'ca' utility.)
2612 *) Reduced header interdepencies by declaring more opaque objects in
2613 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2614 give fewer recursive includes, which could break lazy source code - so
2615 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2616 developers should define this symbol when building and using openssl to
2617 ensure they track the recommended behaviour, interfaces, [etc], but
2618 backwards-compatible behaviour prevails when this isn't defined.
2621 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2624 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2625 This will generate a random key of the appropriate length based on the
2626 cipher context. The EVP_CIPHER can provide its own random key generation
2627 routine to support keys of a specific form. This is used in the des and
2628 3des routines to generate a key of the correct parity. Update S/MIME
2629 code to use new functions and hence generate correct parity DES keys.
2630 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2631 valid (weak or incorrect parity).
2634 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2635 as looking them up. This is useful when the verified structure may contain
2636 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2637 present unless the new PKCS7_NO_CRL flag is asserted.
2640 *) Extend ASN1 oid configuration module. It now additionally accepts the
2643 shortName = some long name, 1.2.3.4
2646 *) Reimplemented the BN_CTX implementation. There is now no more static
2647 limitation on the number of variables it can handle nor the depth of the
2648 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2649 information can now expand as required, and rather than having a single
2650 static array of bignums, BN_CTX now uses a linked-list of such arrays
2651 allowing it to expand on demand whilst maintaining the usefulness of
2652 BN_CTX's "bundling".
2655 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2656 to allow all RSA operations to function using a single BN_CTX.
2659 *) Preliminary support for certificate policy evaluation and checking. This
2660 is initially intended to pass the tests outlined in "Conformance Testing
2661 of Relying Party Client Certificate Path Processing Logic" v1.07.
2664 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2665 remained unused and not that useful. A variety of other little bignum
2666 tweaks and fixes have also been made continuing on from the audit (see
2670 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2671 associated ASN1, EVP and SSL functions and old ASN1 macros.
2674 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2675 and this should never fail. So the return value from the use of
2676 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2677 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2680 *) BN_CTX_get() should return zero-valued bignums, providing the same
2681 initialised value as BN_new().
2682 [Geoff Thorpe, suggested by Ulf Möller]
2684 *) Support for inhibitAnyPolicy certificate extension.
2687 *) An audit of the BIGNUM code is underway, for which debugging code is
2688 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2689 is considered valid when processing BIGNUMs, and causes execution to
2690 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2691 further steps are taken to deliberately pollute unused data in BIGNUM
2692 structures to try and expose faulty code further on. For now, openssl will
2693 (in its default mode of operation) continue to tolerate the inconsistent
2694 forms that it has tolerated in the past, but authors and packagers should
2695 consider trying openssl and their own applications when compiled with
2696 these debugging symbols defined. It will help highlight potential bugs in
2697 their own code, and will improve the test coverage for OpenSSL itself. At
2698 some point, these tighter rules will become openssl's default to improve
2699 maintainability, though the assert()s and other overheads will remain only
2700 in debugging configurations. See bn.h for more details.
2701 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2703 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2704 that can only be obtained through BN_CTX_new() (which implicitly
2705 initialises it). The presence of this function only made it possible
2706 to overwrite an existing structure (and cause memory leaks).
2709 *) Because of the callback-based approach for implementing LHASH as a
2710 template type, lh_insert() adds opaque objects to hash-tables and
2711 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2712 to clean up those corresponding objects before destroying the hash table
2713 (and losing the object pointers). So some over-zealous constifications in
2714 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2715 objects as "const" and the lh_doall[_arg] callback wrappers are not
2716 prototyped to have "const" restrictions on the object pointers they are
2717 given (and so aren't required to cast them away any more).
2720 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2721 (speed) prefers to use its own implementation. The two implementations
2722 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2723 its object type properly exposed (MS_TM) instead of casting to/from "char
2724 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2725 aren't necessarily the greatest nomenclatures - but this is what was used
2726 internally to the implementation so I've used that for now.
2729 *) Ensure that deprecated functions do not get compiled when
2730 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2731 the self-tests were still using deprecated key-generation functions so
2732 these have been updated also.
2735 *) Reorganise PKCS#7 code to separate the digest location functionality
2736 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2737 New function PKCS7_set_digest() to set the digest type for PKCS#7
2738 digestedData type. Add additional code to correctly generate the
2739 digestedData type and add support for this type in PKCS7 initialization
2743 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2744 structure of type "other".
2747 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2748 sure the loop does correctly stop and breaking ("division by zero")
2749 modulus operations are not performed. The (pre-generated) prime
2750 table crypto/bn/bn_prime.h was already correct, but it could not be
2751 re-generated on some platforms because of the "division by zero"
2752 situation in the script.
2753 [Ralf S. Engelschall]
2755 *) Update support for ECC-based TLS ciphersuites according to
2756 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2757 SHA-1 now is only used for "small" curves (where the
2758 representation of a field element takes up to 24 bytes); for
2759 larger curves, the field element resulting from ECDH is directly
2760 used as premaster secret.
2761 [Douglas Stebila (Sun Microsystems Laboratories)]
2763 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2764 curve secp160r1 to the tests.
2765 [Douglas Stebila (Sun Microsystems Laboratories)]
2767 *) Add the possibility to load symbols globally with DSO.
2768 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2770 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2771 control of the error stack.
2774 *) Add support for STORE in ENGINE.
2777 *) Add the STORE type. The intention is to provide a common interface
2778 to certificate and key stores, be they simple file-based stores, or
2779 HSM-type store, or LDAP stores, or...
2780 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2783 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2784 pass a list of arguments to any function as well as provide a way
2785 for a function to pass data back to the caller.
2788 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2789 works like BUF_strdup() but can be used to duplicate a portion of
2790 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2794 *) Add the function sk_find_ex() which works like sk_find(), but will
2795 return an index to an element even if an exact match couldn't be
2796 found. The index is guaranteed to point at the element where the
2797 searched-for key would be inserted to preserve sorting order.
2800 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2801 takes an extra flags argument for optional functionality. Currently,
2802 the following flags are defined:
2804 OBJ_BSEARCH_VALUE_ON_NOMATCH
2805 This one gets OBJ_bsearch_ex() to return a pointer to the first
2806 element where the comparing function returns a negative or zero
2809 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2810 This one gets OBJ_bsearch_ex() to return a pointer to the first
2811 element where the comparing function returns zero. This is useful
2812 if there are more than one element where the comparing function
2816 *) Make it possible to create self-signed certificates with 'openssl ca'
2817 in such a way that the self-signed certificate becomes part of the
2818 CA database and uses the same mechanisms for serial number generation
2819 as all other certificate signing. The new flag '-selfsign' enables
2820 this functionality. Adapt CA.sh and CA.pl.in.
2823 *) Add functionality to check the public key of a certificate request
2824 against a given private. This is useful to check that a certificate
2825 request can be signed by that key (self-signing).
2828 *) Make it possible to have multiple active certificates with the same
2829 subject in the CA index file. This is done only if the keyword
2830 'unique_subject' is set to 'no' in the main CA section (default
2831 if 'CA_default') of the configuration file. The value is saved
2832 with the database itself in a separate index attribute file,
2833 named like the index file with '.attr' appended to the name.
2836 *) Generate muti valued AVAs using '+' notation in config files for
2840 *) Support for nameConstraints certificate extension.
2843 *) Support for policyConstraints certificate extension.
2846 *) Support for policyMappings certificate extension.
2849 *) Make sure the default DSA_METHOD implementation only uses its
2850 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2851 and change its own handlers to be NULL so as to remove unnecessary
2852 indirection. This lets alternative implementations fallback to the
2853 default implementation more easily.
2856 *) Support for directoryName in GeneralName related extensions
2860 *) Make it possible to link applications using Makefile.shared.
2861 Make that possible even when linking against static libraries!
2864 *) Support for single pass processing for S/MIME signing. This now
2865 means that S/MIME signing can be done from a pipe, in addition
2866 cleartext signing (multipart/signed type) is effectively streaming
2867 and the signed data does not need to be all held in memory.
2869 This is done with a new flag PKCS7_STREAM. When this flag is set
2870 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2871 is done after the data is output (and digests calculated) in
2872 SMIME_write_PKCS7().
2875 *) Add full support for -rpath/-R, both in shared libraries and
2876 applications, at least on the platforms where it's known how
2880 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2881 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2882 will now compute a table of multiples of the generator that
2883 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2884 faster (notably in the case of a single point multiplication,
2885 scalar * generator).
2886 [Nils Larsch, Bodo Moeller]
2888 *) IPv6 support for certificate extensions. The various extensions
2889 which use the IP:a.b.c.d can now take IPv6 addresses using the
2890 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2894 *) Added an ENGINE that implements RSA by performing private key
2895 exponentiations with the GMP library. The conversions to and from
2896 GMP's mpz_t format aren't optimised nor are any montgomery forms
2897 cached, and on x86 it appears OpenSSL's own performance has caught up.
2898 However there are likely to be other architectures where GMP could
2899 provide a boost. This ENGINE is not built in by default, but it can be
2900 specified at Configure time and should be accompanied by the necessary
2901 linker additions, eg;
2902 ./config -DOPENSSL_USE_GMP -lgmp
2905 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2906 testing availability of engines with "-t" - the old behaviour is
2907 produced by increasing the feature's verbosity with "-tt".
2910 *) ECDSA routines: under certain error conditions uninitialized BN objects
2911 could be freed. Solution: make sure initialization is performed early
2912 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2916 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2917 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2918 software implementations. For DSA and DH, parameter generation can
2919 also be overriden by providing the appropriate method callbacks.
2922 *) Change the "progress" mechanism used in key-generation and
2923 primality testing to functions that take a new BN_GENCB pointer in
2924 place of callback/argument pairs. The new API functions have "_ex"
2925 postfixes and the older functions are reimplemented as wrappers for
2926 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2927 declarations of the old functions to help (graceful) attempts to
2928 migrate to the new functions. Also, the new key-generation API
2929 functions operate on a caller-supplied key-structure and return
2930 success/failure rather than returning a key or NULL - this is to
2931 help make "keygen" another member function of RSA_METHOD etc.
2933 Example for using the new callback interface:
2935 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2939 BN_GENCB_set(&my_cb, my_callback, my_arg);
2941 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2942 /* For the meaning of a, b in calls to my_callback(), see the
2943 * documentation of the function that calls the callback.
2944 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2945 * my_callback should return 1 if it wants BN_is_prime_ex()
2946 * to continue, or 0 to stop.
2951 *) Change the ZLIB compression method to be stateful, and make it
2952 available to TLS with the number defined in
2953 draft-ietf-tls-compression-04.txt.
2956 *) Add the ASN.1 structures and functions for CertificatePair, which
2957 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2959 CertificatePair ::= SEQUENCE {
2960 forward [0] Certificate OPTIONAL,
2961 reverse [1] Certificate OPTIONAL,
2962 -- at least one of the pair shall be present -- }
2964 Also implement the PEM functions to read and write certificate
2965 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2967 This needed to be defined, mostly for the sake of the LDAP
2968 attribute crossCertificatePair, but may prove useful elsewhere as
2972 *) Make it possible to inhibit symlinking of shared libraries in
2973 Makefile.shared, for Cygwin's sake.
2976 *) Extend the BIGNUM API by creating a function
2977 void BN_set_negative(BIGNUM *a, int neg);
2978 and a macro that behave like
2979 int BN_is_negative(const BIGNUM *a);
2981 to avoid the need to access 'a->neg' directly in applications.
2984 *) Implement fast modular reduction for pseudo-Mersenne primes
2985 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2986 EC_GROUP_new_curve_GFp() will now automatically use this
2988 [Nils Larsch <nla@trustcenter.de>]
2990 *) Add new lock type (CRYPTO_LOCK_BN).
2993 *) Change the ENGINE framework to automatically load engines
2994 dynamically from specific directories unless they could be
2995 found to already be built in or loaded. Move all the
2996 current engines except for the cryptodev one to a new
2998 The engines in engines/ are built as shared libraries if
2999 the "shared" options was given to ./Configure or ./config.
3000 Otherwise, they are inserted in libcrypto.a.
3001 /usr/local/ssl/engines is the default directory for dynamic
3002 engines, but that can be overriden at configure time through
3003 the usual use of --prefix and/or --openssldir, and at run
3004 time with the environment variable OPENSSL_ENGINES.
3005 [Geoff Thorpe and Richard Levitte]
3007 *) Add Makefile.shared, a helper makefile to build shared
3008 libraries. Addapt Makefile.org.
3011 *) Add version info to Win32 DLLs.
3012 [Peter 'Luna' Runestig" <peter@runestig.com>]
3014 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3015 can be added using this API to created arbitrary PKCS#12
3016 files while avoiding the low level API.
3018 New options to PKCS12_create(), key or cert can be NULL and
3019 will then be omitted from the output file. The encryption
3020 algorithm NIDs can be set to -1 for no encryption, the mac
3021 iteration count can be set to 0 to omit the mac.
3023 Enhance pkcs12 utility by making the -nokeys and -nocerts
3024 options work when creating a PKCS#12 file. New option -nomac
3025 to omit the mac, NONE can be set for an encryption algorithm.
3026 New code is modified to use the enhanced PKCS12_create()
3027 instead of the low level API.
3030 *) Extend ASN1 encoder to support indefinite length constructed
3031 encoding. This can output sequences tags and octet strings in
3032 this form. Modify pk7_asn1.c to support indefinite length
3033 encoding. This is experimental and needs additional code to
3034 be useful, such as an ASN1 bio and some enhanced streaming
3037 Extend template encode functionality so that tagging is passed
3038 down to the template encoder.
3041 *) Let 'openssl req' fail if an argument to '-newkey' is not
3042 recognized instead of using RSA as a default.
3045 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3046 As these are not official, they are not included in "ALL";
3047 the "ECCdraft" ciphersuite group alias can be used to select them.
3048 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3050 *) Add ECDH engine support.
3051 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3053 *) Add ECDH in new directory crypto/ecdh/.
3054 [Douglas Stebila (Sun Microsystems Laboratories)]
3056 *) Let BN_rand_range() abort with an error after 100 iterations
3057 without success (which indicates a broken PRNG).
3060 *) Change BN_mod_sqrt() so that it verifies that the input value
3061 is really the square of the return value. (Previously,
3062 BN_mod_sqrt would show GIGO behaviour.)
3065 *) Add named elliptic curves over binary fields from X9.62, SECG,
3066 and WAP/WTLS; add OIDs that were still missing.
3068 [Sheueling Chang Shantz and Douglas Stebila
3069 (Sun Microsystems Laboratories)]
3071 *) Extend the EC library for elliptic curves over binary fields
3072 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3075 EC_GF2m_simple_method
3079 EC_GROUP_new_curve_GF2m
3080 EC_GROUP_set_curve_GF2m
3081 EC_GROUP_get_curve_GF2m
3082 EC_POINT_set_affine_coordinates_GF2m
3083 EC_POINT_get_affine_coordinates_GF2m
3084 EC_POINT_set_compressed_coordinates_GF2m
3086 Point compression for binary fields is disabled by default for
3087 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3090 As binary polynomials are represented as BIGNUMs, various members
3091 of the EC_GROUP and EC_POINT data structures can be shared
3092 between the implementations for prime fields and binary fields;
3093 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3094 are essentially identical to their ..._GFp counterparts.
3095 (For simplicity, the '..._GFp' prefix has been dropped from
3096 various internal method names.)
3098 An internal 'field_div' method (similar to 'field_mul' and
3099 'field_sqr') has been added; this is used only for binary fields.
3101 [Sheueling Chang Shantz and Douglas Stebila
3102 (Sun Microsystems Laboratories)]
3104 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3105 through methods ('mul', 'precompute_mult').
3107 The generic implementations (now internally called 'ec_wNAF_mul'
3108 and 'ec_wNAF_precomputed_mult') remain the default if these
3109 methods are undefined.
3111 [Sheueling Chang Shantz and Douglas Stebila
3112 (Sun Microsystems Laboratories)]
3114 *) New function EC_GROUP_get_degree, which is defined through
3115 EC_METHOD. For curves over prime fields, this returns the bit
3116 length of the modulus.
3118 [Sheueling Chang Shantz and Douglas Stebila
3119 (Sun Microsystems Laboratories)]
3121 *) New functions EC_GROUP_dup, EC_POINT_dup.
3122 (These simply call ..._new and ..._copy).
3124 [Sheueling Chang Shantz and Douglas Stebila
3125 (Sun Microsystems Laboratories)]
3127 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3128 Polynomials are represented as BIGNUMs (where the sign bit is not
3129 used) in the following functions [macros]:
3132 BN_GF2m_sub [= BN_GF2m_add]
3133 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3134 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3135 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3137 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3138 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3139 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3140 BN_GF2m_cmp [= BN_ucmp]
3142 (Note that only the 'mod' functions are actually for fields GF(2^m).
3143 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3145 For some functions, an the irreducible polynomial defining a
3146 field can be given as an 'unsigned int[]' with strictly
3147 decreasing elements giving the indices of those bits that are set;
3148 i.e., p[] represents the polynomial
3149 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3151 p[0] > p[1] > ... > p[k] = 0.
3152 This applies to the following functions:
3157 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3158 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3160 BN_GF2m_mod_sqrt_arr
3161 BN_GF2m_mod_solve_quad_arr
3165 Conversion can be performed by the following functions:
3170 bntest.c has additional tests for binary polynomial arithmetic.
3172 Two implementations for BN_GF2m_mod_div() are available.
3173 The default algorithm simply uses BN_GF2m_mod_inv() and
3174 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3175 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3176 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3178 [Sheueling Chang Shantz and Douglas Stebila
3179 (Sun Microsystems Laboratories)]
3181 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3182 functionality is disabled at compile-time.
3183 [Douglas Stebila <douglas.stebila@sun.com>]
3185 *) Change default behaviour of 'openssl asn1parse' so that more
3186 information is visible when viewing, e.g., a certificate:
3188 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3189 mode the content of non-printable OCTET STRINGs is output in a
3190 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3191 avoid the appearance of a printable string.
3192 [Nils Larsch <nla@trustcenter.de>]
3194 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3196 EC_GROUP_set_asn1_flag()
3197 EC_GROUP_get_asn1_flag()
3198 EC_GROUP_set_point_conversion_form()
3199 EC_GROUP_get_point_conversion_form()
3200 These control ASN1 encoding details:
3201 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3202 has been set to OPENSSL_EC_NAMED_CURVE.
3203 - Points are encoded in uncompressed form by default; options for
3204 asn1_for are as for point2oct, namely
3205 POINT_CONVERSION_COMPRESSED
3206 POINT_CONVERSION_UNCOMPRESSED
3207 POINT_CONVERSION_HYBRID
3209 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3212 EC_GROUP_get0_seed()
3213 EC_GROUP_get_seed_len()
3214 This is used only for ASN1 purposes (so far).
3215 [Nils Larsch <nla@trustcenter.de>]
3217 *) Add 'field_type' member to EC_METHOD, which holds the NID
3218 of the appropriate field type OID. The new function
3219 EC_METHOD_get_field_type() returns this value.
3220 [Nils Larsch <nla@trustcenter.de>]
3225 EC_POINT_point2hex()
3226 EC_POINT_hex2point()
3227 providing useful interfaces to EC_POINT_point2oct() and
3228 EC_POINT_oct2point().
3229 [Nils Larsch <nla@trustcenter.de>]
3231 *) Change internals of the EC library so that the functions
3232 EC_GROUP_set_generator()
3233 EC_GROUP_get_generator()
3234 EC_GROUP_get_order()
3235 EC_GROUP_get_cofactor()
3236 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3237 to methods, which would lead to unnecessary code duplication when
3238 adding different types of curves.
3239 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3241 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3242 arithmetic, and such that modified wNAFs are generated
3243 (which avoid length expansion in many cases).
3246 *) Add a function EC_GROUP_check_discriminant() (defined via
3247 EC_METHOD) that verifies that the curve discriminant is non-zero.
3249 Add a function EC_GROUP_check() that makes some sanity tests
3250 on a EC_GROUP, its generator and order. This includes
3251 EC_GROUP_check_discriminant().
3252 [Nils Larsch <nla@trustcenter.de>]
3254 *) Add ECDSA in new directory crypto/ecdsa/.
3256 Add applications 'openssl ecparam' and 'openssl ecdsa'
3257 (these are based on 'openssl dsaparam' and 'openssl dsa').
3259 ECDSA support is also included in various other files across the
3260 library. Most notably,
3261 - 'openssl req' now has a '-newkey ecdsa:file' option;
3262 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3263 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3264 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3265 them suitable for ECDSA where domain parameters must be
3266 extracted before the specific public key;
3267 - ECDSA engine support has been added.
3268 [Nils Larsch <nla@trustcenter.de>]
3270 *) Include some named elliptic curves, and add OIDs from X9.62,
3271 SECG, and WAP/WTLS. Each curve can be obtained from the new
3273 EC_GROUP_new_by_curve_name(),
3274 and the list of available named curves can be obtained with
3275 EC_get_builtin_curves().
3276 Also add a 'curve_name' member to EC_GROUP objects, which can be
3278 EC_GROUP_set_curve_name()
3279 EC_GROUP_get_curve_name()
3280 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3282 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3283 was actually never needed) and in BN_mul(). The removal in BN_mul()
3284 required a small change in bn_mul_part_recursive() and the addition
3285 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3286 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3287 bn_sub_words() and bn_add_words() except they take arrays with
3291 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3293 *) Cleanse PEM buffers before freeing them since they may contain
3295 [Benjamin Bennett <ben@psc.edu>]
3297 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3298 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3299 authentication-only ciphersuites.
3302 *) Since AES128 and AES256 share a single mask bit in the logic of
3303 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3304 kludge to work properly if AES128 is available and AES256 isn't.
3307 *) Expand security boundary to match 1.1.1 module.
3310 *) Remove redundant features: hash file source, editing of test vectors
3311 modify fipsld to use external fips_premain.c signature.
3314 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3315 run algorithm test programs.
3318 *) Make algorithm test programs more tolerant of whitespace.
3321 *) Have SSL/TLS server implementation tolerate "mismatched" record
3322 protocol version while receiving ClientHello even if the
3323 ClientHello is fragmented. (The server can't insist on the
3324 particular protocol version it has chosen before the ServerHello
3325 message has informed the client about his choice.)
3328 *) Load error codes if they are not already present instead of using a
3329 static variable. This allows them to be cleanly unloaded and reloaded.
3332 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3334 *) Introduce limits to prevent malicious keys being able to
3335 cause a denial of service. (CVE-2006-2940)
3336 [Steve Henson, Bodo Moeller]
3338 *) Fix ASN.1 parsing of certain invalid structures that can result
3339 in a denial of service. (CVE-2006-2937) [Steve Henson]
3341 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3342 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3344 *) Fix SSL client code which could crash if connecting to a
3345 malicious SSLv2 server. (CVE-2006-4343)
3346 [Tavis Ormandy and Will Drewry, Google Security Team]
3348 *) Change ciphersuite string processing so that an explicit
3349 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3350 will no longer include "AES128-SHA"), and any other similar
3351 ciphersuite (same bitmap) from *other* protocol versions (so that
3352 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3353 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3354 changes from 0.9.8b and 0.9.8d.
3357 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3359 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3360 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3362 *) Change the Unix randomness entropy gathering to use poll() when
3363 possible instead of select(), since the latter has some
3364 undesirable limitations.
3365 [Darryl Miles via Richard Levitte and Bodo Moeller]
3367 *) Disable rogue ciphersuites:
3369 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3370 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3371 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3373 The latter two were purportedly from
3374 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3377 Also deactive the remaining ciphersuites from
3378 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3379 unofficial, and the ID has long expired.
3382 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3383 dual-core machines) and other potential thread-safety issues.
3386 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3388 *) Adapt fipsld and the build system to link against the validated FIPS
3389 module in FIPS mode.
3392 *) Fixes for VC++ 2005 build under Windows.
3395 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3396 from a Windows bash shell such as MSYS. It is autodetected from the
3397 "config" script when run from a VC++ environment. Modify standard VC++
3398 build to use fipscanister.o from the GNU make build.
3401 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3403 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3404 The value now differs depending on if you build for FIPS or not.
3405 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3406 safely run with a non-FIPSed libcrypto, as it may crash because of
3407 the difference induced by this change.
3410 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3412 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3413 (part of SSL_OP_ALL). This option used to disable the
3414 countermeasure against man-in-the-middle protocol-version
3415 rollback in the SSL 2.0 server implementation, which is a bad
3416 idea. (CVE-2005-2969)
3418 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3419 for Information Security, National Institute of Advanced Industrial
3420 Science and Technology [AIST], Japan)]
3422 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3423 mainly for FIPS compliance and not fully integrated at this stage.
3426 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3427 the exponentiation using a fixed-length exponent. (Otherwise,
3428 the information leaked through timing could expose the secret key
3429 after many signatures; cf. Bleichenbacher's attack on DSA with
3433 *) Make a new fixed-window mod_exp implementation the default for
3434 RSA, DSA, and DH private-key operations so that the sequence of
3435 squares and multiplies and the memory access pattern are
3436 independent of the particular secret key. This will mitigate
3437 cache-timing and potential related attacks.
3439 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3440 and this is automatically used by BN_mod_exp_mont() if the new flag
3441 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3442 will use this BN flag for private exponents unless the flag
3443 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3444 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3446 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3448 *) Change the client implementation for SSLv23_method() and
3449 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3450 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3451 (Previously, the SSL 2.0 backwards compatible Client Hello
3452 message format would be used even with SSL_OP_NO_SSLv2.)
3455 *) Add support for smime-type MIME parameter in S/MIME messages which some
3459 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3460 a threadsafe manner. Modify rsa code to use new function and add calls
3461 to dsa and dh code (which had race conditions before).
3464 *) Include the fixed error library code in the C error file definitions
3465 instead of fixing them up at runtime. This keeps the error code
3466 structures constant.
3469 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3471 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3474 *) Fixes for newer kerberos headers. NB: the casts are needed because
3475 the 'length' field is signed on one version and unsigned on another
3476 with no (?) obvious way to tell the difference, without these VC++
3477 complains. Also the "definition" of FAR (blank) is no longer included
3478 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3479 some needed definitions.
3482 *) Undo Cygwin change.
3485 *) Added support for proxy certificates according to RFC 3820.
3486 Because they may be a security thread to unaware applications,
3487 they must be explicitely allowed in run-time. See
3488 docs/HOWTO/proxy_certificates.txt for further information.
3491 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3493 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3494 server and client random values. Previously
3495 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3496 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3498 This change has negligible security impact because:
3500 1. Server and client random values still have 24 bytes of pseudo random
3503 2. Server and client random values are sent in the clear in the initial
3506 3. The master secret is derived using the premaster secret (48 bytes in
3507 size for static RSA ciphersuites) as well as client server and random
3510 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3513 [Stephen Henson, reported by UK NISCC]
3515 *) Use Windows randomness collection on Cygwin.
3518 *) Fix hang in EGD/PRNGD query when communication socket is closed
3519 prematurely by EGD/PRNGD.
3520 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3522 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3525 *) Back-port of selected performance improvements from development
3526 branch, as well as improved support for PowerPC platforms.
3529 *) Add lots of checks for memory allocation failure, error codes to indicate
3530 failure and freeing up memory if a failure occurs.
3531 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3533 *) Add new -passin argument to dgst.
3536 *) Perform some character comparisons of different types in X509_NAME_cmp:
3537 this is needed for some certificates that reencode DNs into UTF8Strings
3538 (in violation of RFC3280) and can't or wont issue name rollover
3542 *) Make an explicit check during certificate validation to see that
3543 the CA setting in each certificate on the chain is correct. As a
3544 side effect always do the following basic checks on extensions,
3545 not just when there's an associated purpose to the check:
3547 - if there is an unhandled critical extension (unless the user
3548 has chosen to ignore this fault)
3549 - if the path length has been exceeded (if one is set at all)
3550 - that certain extensions fit the associated purpose (if one has
3554 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3556 *) Avoid a race condition when CRLs are checked in a multi threaded
3557 environment. This would happen due to the reordering of the revoked
3558 entries during signature checking and serial number lookup. Now the
3559 encoding is cached and the serial number sort performed under a lock.
3560 Add new STACK function sk_is_sorted().
3563 *) Add Delta CRL to the extension code.
3566 *) Various fixes to s3_pkt.c so alerts are sent properly.
3567 [David Holmes <d.holmes@f5.com>]
3569 *) Reduce the chances of duplicate issuer name and serial numbers (in
3570 violation of RFC3280) using the OpenSSL certificate creation utilities.
3571 This is done by creating a random 64 bit value for the initial serial
3572 number when a serial number file is created or when a self signed
3573 certificate is created using 'openssl req -x509'. The initial serial
3574 number file is created using 'openssl x509 -next_serial' in CA.pl
3575 rather than being initialized to 1.
3578 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3580 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3581 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3582 [Joe Orton, Steve Henson]
3584 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3586 [Joe Orton, Steve Henson]
3588 *) Make it possible to have multiple active certificates with the same
3589 subject in the CA index file. This is done only if the keyword
3590 'unique_subject' is set to 'no' in the main CA section (default
3591 if 'CA_default') of the configuration file. The value is saved
3592 with the database itself in a separate index attribute file,
3593 named like the index file with '.attr' appended to the name.
3596 *) X509 verify fixes. Disable broken certificate workarounds when
3597 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3598 keyUsage extension present. Don't accept CRLs with unhandled critical
3599 extensions: since verify currently doesn't process CRL extensions this
3600 rejects a CRL with *any* critical extensions. Add new verify error codes
3604 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3605 A clarification of RFC2560 will require the use of OCTET STRINGs and
3606 some implementations cannot handle the current raw format. Since OpenSSL
3607 copies and compares OCSP nonces as opaque blobs without any attempt at
3608 parsing them this should not create any compatibility issues.
3611 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3612 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3613 this HMAC (and other) operations are several times slower than OpenSSL
3617 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3618 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3620 *) Use the correct content when signing type "other".
3623 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3625 *) Fix various bugs revealed by running the NISCC test suite:
3627 Stop out of bounds reads in the ASN1 code when presented with
3628 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3630 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3632 If verify callback ignores invalid public key errors don't try to check
3633 certificate signature with the NULL public key.
3637 *) New -ignore_err option in ocsp application to stop the server
3638 exiting on the first error in a request.
3641 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3642 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3646 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3647 extra data after the compression methods not only for TLS 1.0
3648 but also for SSL 3.0 (as required by the specification).
3649 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3651 *) Change X509_certificate_type() to mark the key as exported/exportable
3652 when it's 512 *bits* long, not 512 bytes.
3655 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3656 blocks during encryption.
3659 *) Various fixes to base64 BIO and non blocking I/O. On write
3660 flushes were not handled properly if the BIO retried. On read
3661 data was not being buffered properly and had various logic bugs.
3662 This also affects blocking I/O when the data being decoded is a
3666 *) Various S/MIME bugfixes and compatibility changes:
3667 output correct application/pkcs7 MIME type if
3668 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3669 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3670 of files as .eml work). Correctly handle very long lines in MIME
3674 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3676 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3677 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3678 a protocol version number mismatch like a decryption error
3679 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3682 *) Turn on RSA blinding by default in the default implementation
3683 to avoid a timing attack. Applications that don't want it can call
3684 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3685 They would be ill-advised to do so in most cases.
3686 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3688 *) Change RSA blinding code so that it works when the PRNG is not
3689 seeded (in this case, the secret RSA exponent is abused as
3690 an unpredictable seed -- if it is not unpredictable, there
3691 is no point in blinding anyway). Make RSA blinding thread-safe
3692 by remembering the creator's thread ID in rsa->blinding and
3693 having all other threads use local one-time blinding factors
3694 (this requires more computation than sharing rsa->blinding, but
3695 avoids excessive locking; and if an RSA object is not shared
3696 between threads, blinding will still be very fast).
3699 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3700 ENGINE as defaults for all supported algorithms irrespective of
3701 the 'flags' parameter. 'flags' is now honoured, so applications
3702 should make sure they are passing it correctly.
3705 *) Target "mingw" now allows native Windows code to be generated in
3706 the Cygwin environment as well as with the MinGW compiler.
3709 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3711 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3712 via timing by performing a MAC computation even if incorrrect
3713 block cipher padding has been found. This is a countermeasure
3714 against active attacks where the attacker has to distinguish
3715 between bad padding and a MAC verification error. (CVE-2003-0078)
3717 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3718 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3719 Martin Vuagnoux (EPFL, Ilion)]
3721 *) Make the no-err option work as intended. The intention with no-err
3722 is not to have the whole error stack handling routines removed from
3723 libcrypto, it's only intended to remove all the function name and
3724 reason texts, thereby removing some of the footprint that may not
3725 be interesting if those errors aren't displayed anyway.
3727 NOTE: it's still possible for any application or module to have it's
3728 own set of error texts inserted. The routines are there, just not
3729 used by default when no-err is given.
3732 *) Add support for FreeBSD on IA64.
3733 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3735 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3736 Kerberos function mit_des_cbc_cksum(). Before this change,
3737 the value returned by DES_cbc_cksum() was like the one from
3738 mit_des_cbc_cksum(), except the bytes were swapped.
3739 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3741 *) Allow an application to disable the automatic SSL chain building.
3742 Before this a rather primitive chain build was always performed in
3743 ssl3_output_cert_chain(): an application had no way to send the
3744 correct chain if the automatic operation produced an incorrect result.
3746 Now the chain builder is disabled if either:
3748 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3750 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3752 The reasoning behind this is that an application would not want the
3753 auto chain building to take place if extra chain certificates are
3754 present and it might also want a means of sending no additional
3755 certificates (for example the chain has two certificates and the
3759 *) Add the possibility to build without the ENGINE framework.
3760 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3762 *) Under Win32 gmtime() can return NULL: check return value in
3763 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3766 *) DSA routines: under certain error conditions uninitialized BN objects
3767 could be freed. Solution: make sure initialization is performed early
3768 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3769 Nils Larsch <nla@trustcenter.de> via PR#459)
3772 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3773 checked on reconnect on the client side, therefore session resumption
3774 could still fail with a "ssl session id is different" error. This
3775 behaviour is masked when SSL_OP_ALL is used due to
3776 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3777 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3778 followup to PR #377.
3781 *) IA-32 assembler support enhancements: unified ELF targets, support
3782 for SCO/Caldera platforms, fix for Cygwin shared build.
3785 *) Add support for FreeBSD on sparc64. As a consequence, support for
3786 FreeBSD on non-x86 processors is separate from x86 processors on
3787 the config script, much like the NetBSD support.
3788 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3790 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3792 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3795 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3796 code (06) was taken as the first octet of the session ID and the last
3797 octet was ignored consequently. As a result SSLv2 client side session
3798 caching could not have worked due to the session ID mismatch between
3800 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3804 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3805 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3809 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3810 seems that in spite of existing for more than a year, many application
3811 author have done nothing to provide the necessary callbacks, which
3812 means that this particular engine will not work properly anywhere.
3813 This is a very unfortunate situation which forces us, in the name
3814 of usability, to give the hw_ncipher.c a static lock, which is part
3816 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3817 appear in 0.9.8 or later. We EXPECT application authors to have
3818 dealt properly with this when 0.9.8 is released (unless we actually
3819 make such changes in the libcrypto locking code that changes will
3820 have to be made anyway).
3823 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3824 octets have been read, EOF or an error occurs. Without this change
3825 some truncated ASN1 structures will not produce an error.
3828 *) Disable Heimdal support, since it hasn't been fully implemented.
3829 Still give the possibility to force the use of Heimdal, but with
3830 warnings and a request that patches get sent to openssl-dev.
3833 *) Add the VC-CE target, introduce the WINCE sysname, and add
3834 INSTALL.WCE and appropriate conditionals to make it build.
3835 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3837 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3838 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3839 edit numbers of the version.
3840 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3842 *) Introduce safe string copy and catenation functions
3843 (BUF_strlcpy() and BUF_strlcat()).
3844 [Ben Laurie (CHATS) and Richard Levitte]
3846 *) Avoid using fixed-size buffers for one-line DNs.
3847 [Ben Laurie (CHATS)]
3849 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3850 resizing buffers containing secrets, and use where appropriate.
3851 [Ben Laurie (CHATS)]
3853 *) Avoid using fixed size buffers for configuration file location.
3854 [Ben Laurie (CHATS)]
3856 *) Avoid filename truncation for various CA files.
3857 [Ben Laurie (CHATS)]
3859 *) Use sizeof in preference to magic numbers.
3860 [Ben Laurie (CHATS)]
3862 *) Avoid filename truncation in cert requests.
3863 [Ben Laurie (CHATS)]
3865 *) Add assertions to check for (supposedly impossible) buffer
3867 [Ben Laurie (CHATS)]
3869 *) Don't cache truncated DNS entries in the local cache (this could
3870 potentially lead to a spoofing attack).
3871 [Ben Laurie (CHATS)]
3873 *) Fix various buffers to be large enough for hex/decimal
3874 representations in a platform independent manner.
3875 [Ben Laurie (CHATS)]
3877 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3878 resizing buffers containing secrets, and use where appropriate.
3879 [Ben Laurie (CHATS)]
3881 *) Add BIO_indent() to avoid much slightly worrying code to do
3883 [Ben Laurie (CHATS)]
3885 *) Convert sprintf()/BIO_puts() to BIO_printf().
3886 [Ben Laurie (CHATS)]
3888 *) buffer_gets() could terminate with the buffer only half
3890 [Ben Laurie (CHATS)]
3892 *) Add assertions to prevent user-supplied crypto functions from
3893 overflowing internal buffers by having large block sizes, etc.
3894 [Ben Laurie (CHATS)]
3896 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3898 [Ben Laurie (CHATS)]
3900 *) Eliminate unused copy of key in RC4.
3901 [Ben Laurie (CHATS)]
3903 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3904 [Ben Laurie (CHATS)]
3906 *) Fix off-by-one error in EGD path.
3907 [Ben Laurie (CHATS)]
3909 *) If RANDFILE path is too long, ignore instead of truncating.
3910 [Ben Laurie (CHATS)]
3912 *) Eliminate unused and incorrectly sized X.509 structure
3914 [Ben Laurie (CHATS)]
3916 *) Eliminate unused and dangerous function knumber().
3917 [Ben Laurie (CHATS)]
3919 *) Eliminate unused and dangerous structure, KSSL_ERR.
3920 [Ben Laurie (CHATS)]
3922 *) Protect against overlong session ID context length in an encoded
3923 session object. Since these are local, this does not appear to be
3925 [Ben Laurie (CHATS)]
3927 *) Change from security patch (see 0.9.6e below) that did not affect
3928 the 0.9.6 release series:
3930 Remote buffer overflow in SSL3 protocol - an attacker could
3931 supply an oversized master key in Kerberos-enabled versions.
3933 [Ben Laurie (CHATS)]
3935 *) Change the SSL kerb5 codes to match RFC 2712.
3938 *) Make -nameopt work fully for req and add -reqopt switch.
3939 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3941 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3942 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3944 *) Make sure tests can be performed even if the corresponding algorithms
3945 have been removed entirely. This was also the last step to make
3946 OpenSSL compilable with DJGPP under all reasonable conditions.
3947 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3949 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3950 to allow version independent disabling of normally unselected ciphers,
3951 which may be activated as a side-effect of selecting a single cipher.
3953 (E.g., cipher list string "RSA" enables ciphersuites that are left
3954 out of "ALL" because they do not provide symmetric encryption.
3955 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3956 [Lutz Jaenicke, Bodo Moeller]
3958 *) Add appropriate support for separate platform-dependent build
3959 directories. The recommended way to make a platform-dependent
3960 build directory is the following (tested on Linux), maybe with
3963 # Place yourself outside of the OpenSSL source tree. In
3964 # this example, the environment variable OPENSSL_SOURCE
3965 # is assumed to contain the absolute OpenSSL source directory.
3966 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3967 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3968 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3969 mkdir -p `dirname $F`
3970 ln -s $OPENSSL_SOURCE/$F $F
3973 To be absolutely sure not to disturb the source tree, a "make clean"
3974 is a good thing. If it isn't successfull, don't worry about it,
3975 it probably means the source directory is very clean.
3978 *) Make sure any ENGINE control commands make local copies of string
3979 pointers passed to them whenever necessary. Otherwise it is possible
3980 the caller may have overwritten (or deallocated) the original string
3981 data when a later ENGINE operation tries to use the stored values.
3982 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3984 *) Improve diagnostics in file reading and command-line digests.
3985 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3987 *) Add AES modes CFB and OFB to the object database. Correct an
3988 error in AES-CFB decryption.
3991 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3992 allows existing EVP_CIPHER_CTX structures to be reused after
3993 calling EVP_*Final(). This behaviour is used by encryption
3994 BIOs and some applications. This has the side effect that
3995 applications must explicitly clean up cipher contexts with
3996 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3999 *) Check the values of dna and dnb in bn_mul_recursive before calling
4000 bn_mul_comba (a non zero value means the a or b arrays do not contain
4001 n2 elements) and fallback to bn_mul_normal if either is not zero.
4004 *) Fix escaping of non-ASCII characters when using the -subj option
4005 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4008 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4009 form for "surname", serialNumber has no short form.
4010 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4011 therefore remove "mail" short name for "internet 7".
4012 The OID for unique identifiers in X509 certificates is
4013 x500UniqueIdentifier, not uniqueIdentifier.
4014 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4017 *) Add an "init" command to the ENGINE config module and auto initialize
4018 ENGINEs. Without any "init" command the ENGINE will be initialized
4019 after all ctrl commands have been executed on it. If init=1 the
4020 ENGINE is initailized at that point (ctrls before that point are run
4021 on the uninitialized ENGINE and after on the initialized one). If
4022 init=0 then the ENGINE will not be iniatialized at all.
4025 *) Fix the 'app_verify_callback' interface so that the user-defined
4026 argument is actually passed to the callback: In the
4027 SSL_CTX_set_cert_verify_callback() prototype, the callback
4028 declaration has been changed from
4031 int (*cb)(X509_STORE_CTX *,void *);
4032 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4033 i=s->ctx->app_verify_callback(&ctx)
4034 has been changed into
4035 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4037 To update applications using SSL_CTX_set_cert_verify_callback(),
4038 a dummy argument can be added to their callback functions.
4039 [D. K. Smetters <smetters@parc.xerox.com>]
4041 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4042 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4044 *) Add and OPENSSL_LOAD_CONF define which will cause
4045 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4046 This allows older applications to transparently support certain
4047 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4048 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4049 load the config file and OPENSSL_add_all_algorithms_conf() which will
4050 always load it have also been added.
4053 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4054 Adjust NIDs and EVP layer.
4055 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4057 *) Config modules support in openssl utility.
4059 Most commands now load modules from the config file,
4060 though in a few (such as version) this isn't done
4061 because it couldn't be used for anything.
4063 In the case of ca and req the config file used is
4064 the same as the utility itself: that is the -config
4065 command line option can be used to specify an
4069 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4070 use "openssl_conf" if filename is NULL use default openssl config file.
4073 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4074 config section name. Add a new flag to tolerate a missing config file
4075 and move code to CONF_modules_load_file().
4078 *) Support for crypto accelerator cards from Accelerated Encryption
4079 Processing, www.aep.ie. (Use engine 'aep')
4080 The support was copied from 0.9.6c [engine] and adapted/corrected
4081 to work with the new engine framework.
4082 [AEP Inc. and Richard Levitte]
4084 *) Support for SureWare crypto accelerator cards from Baltimore
4085 Technologies. (Use engine 'sureware')
4086 The support was copied from 0.9.6c [engine] and adapted
4087 to work with the new engine framework.
4090 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4091 make the newer ENGINE framework commands for the CHIL engine work.
4092 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4094 *) Make it possible to produce shared libraries on ReliantUNIX.
4095 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4097 *) Add the configuration target debug-linux-ppro.
4098 Make 'openssl rsa' use the general key loading routines
4099 implemented in apps.c, and make those routines able to
4100 handle the key format FORMAT_NETSCAPE and the variant
4102 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4104 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4105 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4107 *) Add -keyform to rsautl, and document -engine.
4108 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4110 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4111 BIO_R_NO_SUCH_FILE error code rather than the generic
4112 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4115 *) Add new functions
4117 ERR_peek_last_error_line
4118 ERR_peek_last_error_line_data.
4119 These are similar to
4122 ERR_peek_error_line_data,
4123 but report on the latest error recorded rather than the first one
4124 still in the error queue.
4125 [Ben Laurie, Bodo Moeller]
4127 *) default_algorithms option in ENGINE config module. This allows things
4129 default_algorithms = ALL
4130 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4133 *) Prelminary ENGINE config module.
4136 *) New experimental application configuration code.
4139 *) Change the AES code to follow the same name structure as all other
4140 symmetric ciphers, and behave the same way. Move everything to
4141 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4142 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4144 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4145 [Ben Laurie and Theo de Raadt]
4147 *) Add option to output public keys in req command.
4148 [Massimiliano Pala madwolf@openca.org]
4150 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4151 (up to about 10% better than before for P-192 and P-224).
4154 *) New functions/macros
4156 SSL_CTX_set_msg_callback(ctx, cb)
4157 SSL_CTX_set_msg_callback_arg(ctx, arg)
4158 SSL_set_msg_callback(ssl, cb)
4159 SSL_set_msg_callback_arg(ssl, arg)
4161 to request calling a callback function
4163 void cb(int write_p, int version, int content_type,
4164 const void *buf, size_t len, SSL *ssl, void *arg)
4166 whenever a protocol message has been completely received
4167 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4168 protocol version according to which the SSL library interprets
4169 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4170 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4171 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4172 specification (change_cipher_spec(20), alert(21), handshake(22)).
4173 'buf' and 'len' point to the actual message, 'ssl' to the
4174 SSL object, and 'arg' is the application-defined value set by
4175 SSL[_CTX]_set_msg_callback_arg().
4177 'openssl s_client' and 'openssl s_server' have new '-msg' options
4178 to enable a callback that displays all protocol messages.
4181 *) Change the shared library support so shared libraries are built as
4182 soon as the corresponding static library is finished, and thereby get
4183 openssl and the test programs linked against the shared library.
4184 This still only happens when the keyword "shard" has been given to
4185 the configuration scripts.
4187 NOTE: shared library support is still an experimental thing, and
4188 backward binary compatibility is still not guaranteed.
4189 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4191 *) Add support for Subject Information Access extension.
4192 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4194 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4195 additional bytes when new memory had to be allocated, not just
4196 when reusing an existing buffer.
4199 *) New command line and configuration option 'utf8' for the req command.
4200 This allows field values to be specified as UTF8 strings.
4203 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4204 runs for the former and machine-readable output for the latter.
4207 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4208 of the e-mail address in the DN (i.e., it will go into a certificate
4209 extension only). The new configuration file option 'email_in_dn = no'
4210 has the same effect.
4211 [Massimiliano Pala madwolf@openca.org]
4213 *) Change all functions with names starting with des_ to be starting
4214 with DES_ instead. Add wrappers that are compatible with libdes,
4215 but are named _ossl_old_des_*. Finally, add macros that map the
4216 des_* symbols to the corresponding _ossl_old_des_* if libdes
4217 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4218 desired, the des_* symbols will be mapped to DES_*, with one
4221 Since we provide two compatibility mappings, the user needs to
4222 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4223 compatibility is desired. The default (i.e., when that macro
4224 isn't defined) is OpenSSL 0.9.6c compatibility.
4226 There are also macros that enable and disable the support of old
4227 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4228 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4229 are defined, the default will apply: to support the old des routines.
4231 In either case, one must include openssl/des.h to get the correct
4232 definitions. Do not try to just include openssl/des_old.h, that
4235 NOTE: This is a major break of an old API into a new one. Software
4236 authors are encouraged to switch to the DES_ style functions. Some
4237 time in the future, des_old.h and the libdes compatibility functions
4238 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4239 default), and then completely removed.
4242 *) Test for certificates which contain unsupported critical extensions.
4243 If such a certificate is found during a verify operation it is
4244 rejected by default: this behaviour can be overridden by either
4245 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4246 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4247 X509_supported_extension() has also been added which returns 1 if a
4248 particular extension is supported.
4251 *) Modify the behaviour of EVP cipher functions in similar way to digests
4252 to retain compatibility with existing code.
4255 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4256 compatibility with existing code. In particular the 'ctx' parameter does
4257 not have to be to be initialized before the call to EVP_DigestInit() and
4258 it is tidied up after a call to EVP_DigestFinal(). New function
4259 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4260 EVP_MD_CTX_copy() changed to not require the destination to be
4261 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4262 requires the destination to be valid.
4264 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4265 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4268 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4269 so that complete 'Handshake' protocol structures are kept in memory
4270 instead of overwriting 'msg_type' and 'length' with 'body' data.
projects / openssl.git / blob