5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Support for fixed DH ciphersuites: those requiring DH server
11 *) Transparently support X9.42 DH parameters when calling
12 PEM_read_bio_DHparameters. This means existing applications can handle
13 the new parameter format automatically.
16 *) Initial experimental support for X9.42 DH parameter format: mainly
17 to support use of 'q' parameter for RFC5114 parameters.
20 *) Add DH parameters from RFC5114 including test data to dhtest.
23 *) Update fips_test_suite to support multiple command line options. New
24 test to induce all self test errors in sequence and check expected
28 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
29 sign or verify all in one operation.
32 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
33 test programs and fips_test_suite. Includes functionality to parse
34 the minimal script output of fipsalgest.pl directly.
37 *) Add authorisation parameter to FIPS_module_mode_set().
40 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
43 *) Use separate DRBG fields for internal and external flags. New function
44 FIPS_drbg_health_check() to perform on demand health checking. Add
45 generation tests to fips_test_suite with reduced health check interval to
46 demonstrate periodic health checking. Add "nodh" option to
47 fips_test_suite to skip very slow DH test.
50 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
54 *) More extensive health check for DRBG checking many more failure modes.
55 New function FIPS_selftest_drbg_all() to handle every possible DRBG
56 combination: call this in fips_test_suite.
59 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
60 and POST to handle Dual EC cases.
63 *) Add support for canonical generation of DSA parameter 'g'. See
66 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
67 POST to handle HMAC cases.
70 *) Add functions FIPS_module_version() and FIPS_module_version_text()
71 to return numberical and string versions of the FIPS module number.
74 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
75 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
76 outside the validated module in the FIPS capable OpenSSL.
79 *) Minor change to DRBG entropy callback semantics. In some cases
80 there is no mutiple of the block length between min_len and
81 max_len. Allow the callback to return more than max_len bytes
82 of entropy but discard any extra: it is the callback's responsibility
83 to ensure that the extra data discarded does not impact the
84 requested amount of entropy.
87 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
88 information in FIPS186-3, SP800-57 and SP800-131A.
91 *) CCM support via EVP. Interface is very similar to GCM case except we
92 must supply all data in one chunk (i.e. no update, final) and the
93 message length must be supplied if AAD is used. Add algorithm test
97 *) Initial version of POST overhaul. Add POST callback to allow the status
98 of POST to be monitored and/or failures induced. Modify fips_test_suite
99 to use callback. Always run all selftests even if one fails.
102 *) XTS support including algorithm test driver in the fips_gcmtest program.
103 Note: this does increase the maximum key length from 32 to 64 bytes but
104 there should be no binary compatibility issues as existing applications
105 will never use XTS mode.
108 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
109 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
110 performs algorithm blocking for unapproved PRNG types. Also do not
111 set PRNG type in FIPS_mode_set(): leave this to the application.
112 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
113 the standard OpenSSL PRNG: set additional data to a date time vector.
116 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
117 This shouldn't present any incompatibility problems because applications
118 shouldn't be using these directly and any that are will need to rethink
119 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
122 *) Extensive self tests and health checking required by SP800-90 DRBG.
123 Remove strength parameter from FIPS_drbg_instantiate and always
124 instantiate at maximum supported strength.
127 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
130 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
133 *) New function DH_compute_key_padded() to compute a DH key and pad with
134 leading zeroes if needed: this complies with SP800-56A et al.
137 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
138 anything, incomplete, subject to change and largely untested at present.
141 *) Modify fipscanisteronly build option to only build the necessary object
142 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
145 *) Add experimental option FIPSSYMS to give all symbols in
146 fipscanister.o and FIPS or fips prefix. This will avoid
147 conflicts with future versions of OpenSSL. Add perl script
148 util/fipsas.pl to preprocess assembly language source files
149 and rename any affected symbols.
152 *) Add selftest checks and algorithm block of non-fips algorithms in
153 FIPS mode. Remove DES2 from selftests.
156 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
157 return internal method without any ENGINE dependencies. Add new
158 tiny fips sign and verify functions.
161 *) New build option no-ec2m to disable characteristic 2 code.
164 *) New build option "fipscanisteronly". This only builds fipscanister.o
165 and (currently) associated fips utilities. Uses the file Makefile.fips
166 instead of Makefile.org as the prototype.
169 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
170 Update fips_gcmtest to use IV generator.
173 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
174 setting output buffer to NULL. The *Final function must be
175 called although it will not retrieve any additional data. The tag
176 can be set or retrieved with a ctrl. The IV length is by default 12
177 bytes (96 bits) but can be set to an alternative value. If the IV
178 length exceeds the maximum IV length (currently 16 bytes) it cannot be
182 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
183 underlying do_cipher function handles all cipher semantics itself
184 including padding and finalisation. This is useful if (for example)
185 an ENGINE cipher handles block padding itself. The behaviour of
186 do_cipher is subtly changed if this flag is set: the return value
187 is the number of characters written to the output buffer (zero is
188 no longer an error code) or a negative error code. Also if the
189 input buffer is NULL and length 0 finalisation should be performed.
192 *) If a candidate issuer certificate is already part of the constructed
193 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
196 *) Improve forward-security support: add functions
198 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
199 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
201 for use by SSL/TLS servers; the callback function will be called whenever a
202 new session is created, and gets to decide whether the session may be
203 cached to make it resumable (return 0) or not (return 1). (As by the
204 SSL/TLS protocol specifications, the session_id sent by the server will be
205 empty to indicate that the session is not resumable; also, the server will
206 not generate RFC 4507 (RFC 5077) session tickets.)
208 A simple reasonable callback implementation is to return is_forward_secure.
209 This parameter will be set to 1 or 0 depending on the ciphersuite selected
210 by the SSL/TLS server library, indicating whether it can provide forward
212 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
214 *) New function OPENSSL_gmtime_diff to find the difference in days
215 and seconds between two tm structures. This will be used to provide
216 additional functionality for ASN1_TIME.
219 *) Add -trusted_first option which attempts to find certificates in the
220 trusted store even if an untrusted chain is also supplied.
223 *) Initial experimental support for explicitly trusted non-root CAs.
224 OpenSSL still tries to build a complete chain to a root but if an
225 intermediate CA has a trust setting included that is used. The first
226 setting is used: whether to trust or reject.
229 *) New -verify_name option in command line utilities to set verification
233 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
234 Add CMAC pkey methods.
237 *) Experimental regnegotiation in s_server -www mode. If the client
238 browses /reneg connection is renegotiated. If /renegcert it is
239 renegotiated requesting a certificate.
242 *) Add an "external" session cache for debugging purposes to s_server. This
243 should help trace issues which normally are only apparent in deployed
244 multi-process servers.
247 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
248 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
249 BIO_set_cipher() and some obscure PEM functions were changed so they
250 can now return an error. The RAND changes required a change to the
251 RAND_METHOD structure.
254 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
255 a gcc attribute to warn if the result of a function is ignored. This
256 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
257 whose return value is often ignored.
260 Changes between 1.0.0f and 1.0.1 [xx XXX xxxx]
262 *) Add support for TLS/DTLS heartbeats.
263 [Robin Seggelmann <seggelmann@fh-muenster.de>]
265 *) Add support for SCTP.
266 [Robin Seggelmann <seggelmann@fh-muenster.de>]
268 *) Improved PRNG seeding for VOS.
269 [Paul Green <Paul.Green@stratus.com>]
271 *) Extensive assembler packs updates, most notably:
273 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
274 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
275 - x86_64: bit-sliced AES implementation;
276 - ARM: NEON support, contemporary platforms optimizations;
277 - s390x: z196 support;
278 - *: GHASH and GF(2^m) multiplication implementations;
282 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
283 (removal of unnecessary code)
284 [Peter Sylvester <peter.sylvester@edelweb.fr>]
286 *) Add TLS key material exporter from RFC 5705.
289 *) Add DTLS-SRTP negotiation from RFC 5764.
292 *) Add Next Protocol Negotiation,
293 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
294 disabled with a no-npn flag to config or Configure. Code donated
296 [Adam Langley <agl@google.com> and Ben Laurie]
298 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
299 NIST-P256, NIST-P521, with constant-time single point multiplication on
300 typical inputs. Compiler support for the nonstandard type __uint128_t is
301 required to use this (present in gcc 4.4 and later, for 64-bit builds).
302 Code made available under Apache License version 2.0.
304 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
305 line to include this in your build of OpenSSL, and run "make depend" (or
306 "make update"). This enables the following EC_METHODs:
308 EC_GFp_nistp224_method()
309 EC_GFp_nistp256_method()
310 EC_GFp_nistp521_method()
312 EC_GROUP_new_by_curve_name() will automatically use these (while
313 EC_GROUP_new_curve_GFp() currently prefers the more flexible
315 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
317 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
318 all platforms. Move ssize_t definition from e_os.h to the public
319 header file e_os2.h as it now appears in public header file cms.h
322 *) New -sigopt option to the ca, req and x509 utilities. Additional
323 signature parameters can be passed using this option and in
327 *) Add RSA PSS signing function. This will generate and set the
328 appropriate AlgorithmIdentifiers for PSS based on those in the
329 corresponding EVP_MD_CTX structure. No application support yet.
332 *) Support for companion algorithm specific ASN1 signing routines.
333 New function ASN1_item_sign_ctx() signs a pre-initialised
334 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
335 the appropriate parameters.
338 *) Add new algorithm specific ASN1 verification initialisation function
339 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
340 handling will be the same no matter what EVP_PKEY_METHOD is used.
341 Add a PSS handler to support verification of PSS signatures: checked
342 against a number of sample certificates.
345 *) Add signature printing for PSS. Add PSS OIDs.
346 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
348 *) Add algorithm specific signature printing. An individual ASN1 method
349 can now print out signatures instead of the standard hex dump.
351 More complex signatures (e.g. PSS) can print out more meaningful
352 information. Include DSA version that prints out the signature
356 *) Password based recipient info support for CMS library: implementing
360 *) Split password based encryption into PBES2 and PBKDF2 functions. This
361 neatly separates the code into cipher and PBE sections and is required
362 for some algorithms that split PBES2 into separate pieces (such as
366 *) Session-handling fixes:
367 - Fix handling of connections that are resuming with a session ID,
368 but also support Session Tickets.
369 - Fix a bug that suppressed issuing of a new ticket if the client
370 presented a ticket with an expired session.
371 - Try to set the ticket lifetime hint to something reasonable.
372 - Make tickets shorter by excluding irrelevant information.
373 - On the client side, don't ignore renewed tickets.
374 [Adam Langley, Bodo Moeller (Google)]
376 *) Fix PSK session representation.
379 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
381 This work was sponsored by Intel.
384 *) Add GCM support to TLS library. Some custom code is needed to split
385 the IV between the fixed (from PRF) and explicit (from TLS record)
386 portions. This adds all GCM ciphersuites supported by RFC5288 and
387 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
388 add a special AESGCM string for GCM only.
391 *) Expand range of ctrls for AES GCM. Permit setting invocation
392 field on decrypt and retrieval of invocation field only on encrypt.
395 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
396 As required by RFC5289 these ciphersuites cannot be used if for
397 versions of TLS earlier than 1.2.
400 *) For FIPS capable OpenSSL interpret a NULL default public key method
401 as unset and return the appopriate default but do *not* set the default.
402 This means we can return the appopriate method in applications that
403 swicth between FIPS and non-FIPS modes.
406 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
407 ENGINE is used then we cannot handle that in the FIPS module so we
408 keep original code iff non-FIPS operations are allowed.
411 *) Add -attime option to openssl utilities.
412 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
414 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
417 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
418 FIPS EC methods unconditionally for now.
421 *) New build option no-ec2m to disable characteristic 2 code.
424 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
425 all cases can be covered as some introduce binary incompatibilities.
428 *) Redirect RSA operations to FIPS module including keygen,
429 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
432 *) Add similar low level API blocking to ciphers.
435 *) Low level digest APIs are not approved in FIPS mode: any attempt
436 to use these will cause a fatal error. Applications that *really* want
437 to use them can use the private_* version instead.
440 *) Redirect cipher operations to FIPS module for FIPS builds.
443 *) Redirect digest operations to FIPS module for FIPS builds.
446 *) Update build system to add "fips" flag which will link in fipscanister.o
447 for static and shared library builds embedding a signature if needed.
450 *) Output TLS supported curves in preference order instead of numerical
451 order. This is currently hardcoded for the highest order curves first.
452 This should be configurable so applications can judge speed vs strength.
455 *) Add TLS v1.2 server support for client authentication.
458 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
462 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
463 FIPS modules versions.
466 *) Add TLS v1.2 client side support for client authentication. Keep cache
467 of handshake records longer as we don't know the hash algorithm to use
468 until after the certificate request message is received.
471 *) Initial TLS v1.2 client support. Add a default signature algorithms
472 extension including all the algorithms we support. Parse new signature
473 format in client key exchange. Relax some ECC signing restrictions for
474 TLS v1.2 as indicated in RFC5246.
477 *) Add server support for TLS v1.2 signature algorithms extension. Switch
478 to new signature format when needed using client digest preference.
479 All server ciphersuites should now work correctly in TLS v1.2. No client
480 support yet and no support for client certificates.
483 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
484 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
485 ciphersuites. At present only RSA key exchange ciphersuites work with
486 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
487 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
488 and version checking.
491 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
492 with this defined it will not be affected by any changes to ssl internal
493 structures. Add several utility functions to allow openssl application
494 to work with OPENSSL_NO_SSL_INTERN defined.
498 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
500 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
503 *) Permit abbreviated handshakes when renegotiating using the function
504 SSL_renegotiate_abbreviated().
505 [Robin Seggelmann <seggelmann@fh-muenster.de>]
507 *) Add call to ENGINE_register_all_complete() to
508 ENGINE_load_builtin_engines(), so some implementations get used
509 automatically instead of needing explicit application support.
512 *) Add support for TLS key exporter as described in RFC5705.
513 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
515 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
516 a few changes are required:
518 Add SSL_OP_NO_TLSv1_1 flag.
520 Update version checking logic to handle version 1.1.
521 Add explicit IV handling (ported from DTLS code).
522 Add command line options to s_client/s_server.
525 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
527 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
528 of the Vaudenay padding oracle attack on CBC mode encryption
529 which enables an efficient plaintext recovery attack against
530 the OpenSSL implementation of DTLS. Their attack exploits timing
531 differences arising during decryption processing. A research
532 paper describing this attack can be found at:
533 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
534 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
535 Security Group at Royal Holloway, University of London
536 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
537 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
538 for preparing the fix. (CVE-2011-4108)
539 [Robin Seggelmann, Michael Tuexen]
541 *) Clear bytes used for block padding of SSL 3.0 records.
543 [Adam Langley (Google)]
545 *) Only allow one SGC handshake restart for SSL/TLS. (CVE-2011-4619)
546 [Adam Langley (Google)]
548 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
549 [Andrey Kulikov <amdeich@gmail.com>]
551 *) Prevent malformed RFC3779 data triggering an assertion failure.
552 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
553 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
554 [Rob Austein <sra@hactrn.net>]
556 *) Improved PRNG seeding for VOS.
557 [Paul Green <Paul.Green@stratus.com>]
559 *) Fix ssl_ciph.c set-up race.
560 [Adam Langley (Google)]
562 *) Fix spurious failures in ecdsatest.c.
563 [Emilia Käsper (Google)]
565 *) Fix the BIO_f_buffer() implementation (which was mixing different
566 interpretations of the '..._len' fields).
567 [Adam Langley (Google)]
569 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
570 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
571 threads won't reuse the same blinding coefficients.
573 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
574 lock to call BN_BLINDING_invert_ex, and avoids one use of
575 BN_BLINDING_update for each BN_BLINDING structure (previously,
576 the last update always remained unused).
577 [Emilia Käsper (Google)]
579 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
580 [Bob Buckholz (Google)]
582 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
584 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
585 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
586 [Kaspar Brand <ossl@velox.ch>]
588 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
589 for multi-threaded use of ECDH. (CVE-2011-3210)
590 [Adam Langley (Google)]
592 *) Fix x509_name_ex_d2i memory leak on bad inputs.
595 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
596 signature public key algorithm by using OID xref utilities instead.
597 Before this you could only use some ECC ciphersuites with SHA1 only.
600 *) Add protection against ECDSA timing attacks as mentioned in the paper
601 by Billy Bob Brumley and Nicola Tuveri, see:
603 http://eprint.iacr.org/2011/232.pdf
605 [Billy Bob Brumley and Nicola Tuveri]
607 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
609 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
610 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
612 *) Fix bug in string printing code: if *any* escaping is enabled we must
613 escape the escape character (backslash) or the resulting string is
617 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
619 *) Disable code workaround for ancient and obsolete Netscape browsers
620 and servers: an attacker can use it in a ciphersuite downgrade attack.
621 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
624 *) Fixed J-PAKE implementation error, originally discovered by
625 Sebastien Martini, further info and confirmation from Stefan
626 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
629 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
631 *) Fix extension code to avoid race conditions which can result in a buffer
632 overrun vulnerability: resumed sessions must not be modified as they can
633 be shared by multiple threads. CVE-2010-3864
636 *) Fix WIN32 build system to correctly link an ENGINE directory into
640 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
642 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
644 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
646 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
648 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
649 context. The operation can be customised via the ctrl mechanism in
650 case ENGINEs want to include additional functionality.
653 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
656 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
657 output hashes compatible with older versions of OpenSSL.
658 [Willy Weisz <weisz@vcpc.univie.ac.at>]
660 *) Fix compression algorithm handling: if resuming a session use the
661 compression algorithm of the resumed session instead of determining
662 it from client hello again. Don't allow server to change algorithm.
665 *) Add load_crls() function to apps tidying load_certs() too. Add option
666 to verify utility to allow additional CRLs to be included.
669 *) Update OCSP request code to permit adding custom headers to the request:
670 some responders need this.
673 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
675 [Julia Lawall <julia@diku.dk>]
677 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
678 needlessly dereferenced structures, used obsolete functions and
679 didn't handle all updated verify codes correctly.
682 *) Disable MD2 in the default configuration.
685 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
686 indicate the initial BIO being pushed or popped. This makes it possible
687 to determine whether the BIO is the one explicitly called or as a result
688 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
689 it handles reference counts correctly and doesn't zero out the I/O bio
690 when it is not being explicitly popped. WARNING: applications which
691 included workarounds for the old buggy behaviour will need to be modified
692 or they could free up already freed BIOs.
695 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
696 renaming to all platforms (within the 0.9.8 branch, this was
697 done conditionally on Netware platforms to avoid a name clash).
698 [Guenter <lists@gknw.net>]
700 *) Add ECDHE and PSK support to DTLS.
701 [Michael Tuexen <tuexen@fh-muenster.de>]
703 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
707 *) Add "missing" function EVP_MD_flags() (without this the only way to
708 retrieve a digest flags is by accessing the structure directly. Update
709 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
710 or cipher is registered as in the "from" argument. Print out all
711 registered digests in the dgst usage message instead of manually
712 attempting to work them out.
715 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
716 this allows the use of compression and extensions. Change default cipher
717 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
718 by default unless an application cipher string requests it.
721 *) Alter match criteria in PKCS12_parse(). It used to try to use local
722 key ids to find matching certificates and keys but some PKCS#12 files
723 don't follow the (somewhat unwritten) rules and this strategy fails.
724 Now just gather all certificates together and the first private key
725 then look for the first certificate that matches the key.
728 *) Support use of registered digest and cipher names for dgst and cipher
729 commands instead of having to add each one as a special case. So now
736 openssl dgst -sha256 foo
738 and this works for ENGINE based algorithms too.
742 *) Update Gost ENGINE to support parameter files.
743 [Victor B. Wagner <vitus@cryptocom.ru>]
745 *) Support GeneralizedTime in ca utility.
746 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
748 *) Enhance the hash format used for certificate directory links. The new
749 form uses the canonical encoding (meaning equivalent names will work
750 even if they aren't identical) and uses SHA1 instead of MD5. This form
751 is incompatible with the older format and as a result c_rehash should
752 be used to rebuild symbolic links.
755 *) Make PKCS#8 the default write format for private keys, replacing the
756 traditional format. This form is standardised, more secure and doesn't
757 include an implicit MD5 dependency.
760 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
761 committed to OpenSSL should pass this lot as a minimum.
764 *) Add session ticket override functionality for use by EAP-FAST.
765 [Jouni Malinen <j@w1.fi>]
767 *) Modify HMAC functions to return a value. Since these can be implemented
768 in an ENGINE errors can occur.
771 *) Type-checked OBJ_bsearch_ex.
774 *) Type-checked OBJ_bsearch. Also some constification necessitated
775 by type-checking. Still to come: TXT_DB, bsearch(?),
776 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
780 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
781 seconds to a tm structure directly, instead of going through OS
782 specific date routines. This avoids any issues with OS routines such
783 as the year 2038 bug. New *_adj() functions for ASN1 time structures
784 and X509_time_adj_ex() to cover the extended range. The existing
785 X509_time_adj() is still usable and will no longer have any date issues.
788 *) Delta CRL support. New use deltas option which will attempt to locate
789 and search any appropriate delta CRLs available.
791 This work was sponsored by Google.
794 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
795 code and add additional score elements. Validate alternate CRL paths
796 as part of the CRL checking and indicate a new error "CRL path validation
797 error" in this case. Applications wanting additional details can use
798 the verify callback and check the new "parent" field. If this is not
799 NULL CRL path validation is taking place. Existing applications wont
800 see this because it requires extended CRL support which is off by
803 This work was sponsored by Google.
806 *) Support for freshest CRL extension.
808 This work was sponsored by Google.
811 *) Initial indirect CRL support. Currently only supported in the CRLs
812 passed directly and not via lookup. Process certificate issuer
813 CRL entry extension and lookup CRL entries by bother issuer name
814 and serial number. Check and process CRL issuer entry in IDP extension.
816 This work was sponsored by Google.
819 *) Add support for distinct certificate and CRL paths. The CRL issuer
820 certificate is validated separately in this case. Only enabled if
821 an extended CRL support flag is set: this flag will enable additional
822 CRL functionality in future.
824 This work was sponsored by Google.
827 *) Add support for policy mappings extension.
829 This work was sponsored by Google.
832 *) Fixes to pathlength constraint, self issued certificate handling,
833 policy processing to align with RFC3280 and PKITS tests.
835 This work was sponsored by Google.
838 *) Support for name constraints certificate extension. DN, email, DNS
839 and URI types are currently supported.
841 This work was sponsored by Google.
844 *) To cater for systems that provide a pointer-based thread ID rather
845 than numeric, deprecate the current numeric thread ID mechanism and
846 replace it with a structure and associated callback type. This
847 mechanism allows a numeric "hash" to be extracted from a thread ID in
848 either case, and on platforms where pointers are larger than 'long',
849 mixing is done to help ensure the numeric 'hash' is usable even if it
850 can't be guaranteed unique. The default mechanism is to use "&errno"
851 as a pointer-based thread ID to distinguish between threads.
853 Applications that want to provide their own thread IDs should now use
854 CRYPTO_THREADID_set_callback() to register a callback that will call
855 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
857 Note that ERR_remove_state() is now deprecated, because it is tied
858 to the assumption that thread IDs are numeric. ERR_remove_state(0)
859 to free the current thread's error state should be replaced by
860 ERR_remove_thread_state(NULL).
862 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
863 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
864 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
865 application was previously providing a numeric thread callback that
866 was inappropriate for distinguishing threads, then uniqueness might
867 have been obtained with &errno that happened immediately in the
868 intermediate development versions of OpenSSL; this is no longer the
869 case, the numeric thread callback will now override the automatic use
871 [Geoff Thorpe, with help from Bodo Moeller]
873 *) Initial support for different CRL issuing certificates. This covers a
874 simple case where the self issued certificates in the chain exist and
875 the real CRL issuer is higher in the existing chain.
877 This work was sponsored by Google.
880 *) Removed effectively defunct crypto/store from the build.
883 *) Revamp of STACK to provide stronger type-checking. Still to come:
884 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
885 ASN1_STRING, CONF_VALUE.
888 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
889 RAM on SSL connections. This option can save about 34k per idle SSL.
892 *) Revamp of LHASH to provide stronger type-checking. Still to come:
893 STACK, TXT_DB, bsearch, qsort.
896 *) Initial support for Cryptographic Message Syntax (aka CMS) based
897 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
898 support for data, signedData, compressedData, digestedData and
899 encryptedData, envelopedData types included. Scripts to check against
900 RFC4134 examples draft and interop and consistency checks of many
901 content types and variants.
904 *) Add options to enc utility to support use of zlib compression BIO.
907 *) Extend mk1mf to support importing of options and assembly language
908 files from Configure script, currently only included in VC-WIN32.
909 The assembly language rules can now optionally generate the source
910 files from the associated perl scripts.
913 *) Implement remaining functionality needed to support GOST ciphersuites.
914 Interop testing has been performed using CryptoPro implementations.
915 [Victor B. Wagner <vitus@cryptocom.ru>]
917 *) s390x assembler pack.
920 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
924 *) Implement Opaque PRF Input TLS extension as specified in
925 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
926 official specification yet and no extension type assignment by
927 IANA exists, this extension (for now) will have to be explicitly
928 enabled when building OpenSSL by providing the extension number
929 to use. For example, specify an option
931 -DTLSEXT_TYPE_opaque_prf_input=0x9527
933 to the "config" or "Configure" script to enable the extension,
934 assuming extension number 0x9527 (which is a completely arbitrary
935 and unofficial assignment based on the MD5 hash of the Internet
936 Draft). Note that by doing so, you potentially lose
937 interoperability with other TLS implementations since these might
938 be using the same extension number for other purposes.
940 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
941 opaque PRF input value to use in the handshake. This will create
942 an interal copy of the length-'len' string at 'src', and will
943 return non-zero for success.
945 To get more control and flexibility, provide a callback function
948 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
949 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
953 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
956 Callback function 'cb' will be called in handshakes, and is
957 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
958 Argument 'arg' is for application purposes (the value as given to
959 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
960 be provided to the callback function). The callback function
961 has to return non-zero to report success: usually 1 to use opaque
962 PRF input just if possible, or 2 to enforce use of the opaque PRF
963 input. In the latter case, the library will abort the handshake
964 if opaque PRF input is not successfully negotiated.
966 Arguments 'peerinput' and 'len' given to the callback function
967 will always be NULL and 0 in the case of a client. A server will
968 see the client's opaque PRF input through these variables if
969 available (NULL and 0 otherwise). Note that if the server
970 provides an opaque PRF input, the length must be the same as the
971 length of the client's opaque PRF input.
973 Note that the callback function will only be called when creating
974 a new session (session resumption can resume whatever was
975 previously negotiated), and will not be called in SSL 2.0
976 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
977 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
978 for applications that need to enforce opaque PRF input.
982 *) Update ssl code to support digests other than SHA1+MD5 for handshake
985 [Victor B. Wagner <vitus@cryptocom.ru>]
987 *) Add RFC4507 support to OpenSSL. This includes the corrections in
988 RFC4507bis. The encrypted ticket format is an encrypted encoded
989 SSL_SESSION structure, that way new session features are automatically
992 If a client application caches session in an SSL_SESSION structure
993 support is transparent because tickets are now stored in the encoded
996 The SSL_CTX structure automatically generates keys for ticket
997 protection in servers so again support should be possible
998 with no application modification.
1000 If a client or server wishes to disable RFC4507 support then the option
1001 SSL_OP_NO_TICKET can be set.
1003 Add a TLS extension debugging callback to allow the contents of any client
1004 or server extensions to be examined.
1006 This work was sponsored by Google.
1009 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1010 OpenSSL should now compile cleanly on gcc 4.2
1011 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1013 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1014 support including streaming MAC support: this is required for GOST
1015 ciphersuite support.
1016 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1018 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1019 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1020 to output in BER and PEM format.
1023 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1024 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1025 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1026 ENGINE support for HMAC keys which are unextractable. New -mac and
1027 -macopt options to dgst utility.
1030 *) New option -sigopt to dgst utility. Update dgst to use
1031 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1032 alternative signing paramaters such as X9.31 or PSS in the dgst
1036 *) Change ssl_cipher_apply_rule(), the internal function that does
1037 the work each time a ciphersuite string requests enabling
1038 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1039 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1040 the order of disabled ciphersuites such that those ciphersuites
1041 that most recently went from enabled to disabled not only stay
1042 in order with respect to each other, but also have higher priority
1043 than other disabled ciphersuites the next time ciphersuites are
1046 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1047 the same ciphersuites as with "HIGH" alone, but in a specific
1048 order where the PSK ciphersuites come first (since they are the
1049 most recently disabled ciphersuites when "HIGH" is parsed).
1051 Also, change ssl_create_cipher_list() (using this new
1052 funcionality) such that between otherwise identical
1053 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1057 *) Change ssl_create_cipher_list() so that it automatically
1058 arranges the ciphersuites in reasonable order before starting
1059 to process the rule string. Thus, the definition for "DEFAULT"
1060 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1061 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1062 This makes it much easier to arrive at a reasonable default order
1063 in applications for which anonymous ciphers are OK (meaning
1064 that you can't actually use DEFAULT).
1065 [Bodo Moeller; suggested by Victor Duchovni]
1067 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1068 processing) into multiple integers instead of setting
1069 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1070 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1071 (These masks as well as the individual bit definitions are hidden
1072 away into the non-exported interface ssl/ssl_locl.h, so this
1073 change to the definition of the SSL_CIPHER structure shouldn't
1074 affect applications.) This give us more bits for each of these
1075 categories, so there is no longer a need to coagulate AES128 and
1076 AES256 into a single algorithm bit, and to coagulate Camellia128
1077 and Camellia256 into a single algorithm bit, which has led to all
1080 Thus, among other things, the kludge introduced in 0.9.7m and
1081 0.9.8e for masking out AES256 independently of AES128 or masking
1082 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1084 With the change, we also introduce new ciphersuite aliases that
1085 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1089 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1090 Use the leftmost N bytes of the signature input if the input is
1091 larger than the prime q (with N being the size in bytes of q).
1094 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1095 it yet and it is largely untested.
1098 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1101 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1102 some compilers (gcc 4.2 and later) reject their use. Safestack is
1103 reimplemented. Update ASN1 to avoid use of legacy functions.
1106 *) Win32/64 targets are linked with Winsock2.
1109 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1110 to external functions. This can be used to increase CRL handling
1111 efficiency especially when CRLs are very large by (for example) storing
1112 the CRL revoked certificates in a database.
1115 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1116 new CRLs added to a directory can be used. New command line option
1117 -verify_return_error to s_client and s_server. This causes real errors
1118 to be returned by the verify callback instead of carrying on no matter
1119 what. This reflects the way a "real world" verify callback would behave.
1122 *) GOST engine, supporting several GOST algorithms and public key formats.
1123 Kindly donated by Cryptocom.
1126 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1127 partitioned by DP are handled but no indirect CRL or reason partitioning
1128 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1129 selected via a scoring technique which handles IDP and AKID in CRLs.
1132 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1133 will ultimately be used for all verify operations: this will remove the
1134 X509_STORE dependency on certificate verification and allow alternative
1135 lookup methods. X509_STORE based implementations of these two callbacks.
1138 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1139 Modify get_crl() to find a valid (unexpired) CRL if possible.
1142 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1143 this would be called X509_CRL_cmp() but that name is already used by
1144 a function that just compares CRL issuer names. Cache several CRL
1145 extensions in X509_CRL structure and cache CRLDP in X509.
1148 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1149 this maps equivalent X509_NAME structures into a consistent structure.
1150 Name comparison can then be performed rapidly using memcmp().
1153 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1157 *) Allow digests to supply their own micalg string for S/MIME type using
1158 the ctrl EVP_MD_CTRL_MICALG.
1161 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1162 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1163 ctrl. It can then customise the structure before and/or after signing
1167 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1168 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1169 to free up any added signature OIDs.
1172 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1173 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1174 digest and cipher tables. New options added to openssl utility:
1175 list-message-digest-algorithms and list-cipher-algorithms.
1178 *) Change the array representation of binary polynomials: the list
1179 of degrees of non-zero coefficients is now terminated with -1.
1180 Previously it was terminated with 0, which was also part of the
1181 value; thus, the array representation was not applicable to
1182 polynomials where t^0 has coefficient zero. This change makes
1183 the array representation useful in a more general context.
1186 *) Various modifications and fixes to SSL/TLS cipher string
1187 handling. For ECC, the code now distinguishes between fixed ECDH
1188 with RSA certificates on the one hand and with ECDSA certificates
1189 on the other hand, since these are separate ciphersuites. The
1190 unused code for Fortezza ciphersuites has been removed.
1192 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1193 (not "ECDHE"). For consistency with the code for DH
1194 certificates, use of ECDH certificates is now considered ECDH
1195 authentication, not RSA or ECDSA authentication (the latter is
1196 merely the CA's signing algorithm and not actively used in the
1199 The temporary ciphersuite alias "ECCdraft" is no longer
1200 available, and ECC ciphersuites are no longer excluded from "ALL"
1201 and "DEFAULT". The following aliases now exist for RFC 4492
1202 ciphersuites, most of these by analogy with the DH case:
1204 kECDHr - ECDH cert, signed with RSA
1205 kECDHe - ECDH cert, signed with ECDSA
1206 kECDH - ECDH cert (signed with either RSA or ECDSA)
1207 kEECDH - ephemeral ECDH
1208 ECDH - ECDH cert or ephemeral ECDH
1214 AECDH - anonymous ECDH
1215 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1219 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1220 Use correct micalg parameters depending on digest(s) in signed message.
1223 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1224 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1227 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1228 an engine to register a method. Add ENGINE lookups for methods and
1229 functional reference processing.
1232 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1233 EVP_{Sign,Verify}* which allow an application to customise the signature
1237 *) New -resign option to smime utility. This adds one or more signers
1238 to an existing PKCS#7 signedData structure. Also -md option to use an
1239 alternative message digest algorithm for signing.
1242 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1243 create PKCS7 structures containing multiple signers. Update smime
1244 application to support multiple signers.
1247 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1251 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1252 Reorganize PBE internals to lookup from a static table using NIDs,
1253 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1254 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1255 PRF which will be automatically used with PBES2.
1258 *) Replace the algorithm specific calls to generate keys in "req" with the
1262 *) Update PKCS#7 enveloped data routines to use new API. This is now
1263 supported by any public key method supporting the encrypt operation. A
1264 ctrl is added to allow the public key algorithm to examine or modify
1265 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1269 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1270 a default digest type to use. In most cases this will be SHA1 but some
1271 algorithms (such as GOST) need to specify an alternative digest. The
1272 return value indicates how strong the prefernce is 1 means optional and
1273 2 is mandatory (that is it is the only supported type). Modify
1274 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1275 use the default md. Update openssl utilities to use the default digest
1276 type for signing if it is not explicitly indicated.
1279 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1280 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1281 signing method from the key type. This effectively removes the link
1282 between digests and public key types.
1285 *) Add an OID cross reference table and utility functions. Its purpose is to
1286 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1287 rsaEncryption. This will allow some of the algorithm specific hackery
1288 needed to use the correct OID to be removed.
1291 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1292 structures for PKCS7_sign(). They are now set up by the relevant public
1296 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1299 *) Add support for key derivation (agreement) in the API, DH method and
1303 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1304 public and private key formats. As a side effect these add additional
1305 command line functionality not previously available: DSA signatures can be
1306 generated and verified using pkeyutl and DH key support and generation in
1311 [Oliver Tappe <zooey@hirschkaefer.de>]
1313 *) New make target "install_html_docs" installs HTML renditions of the
1315 [Oliver Tappe <zooey@hirschkaefer.de>]
1317 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1318 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1319 support key and parameter generation and add initial key generation
1320 functionality for RSA.
1323 *) Add functions for main EVP_PKEY_method operations. The undocumented
1324 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1325 EVP_PKEY_{encrypt,decrypt}_old.
1328 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1329 key API, doesn't do much yet.
1332 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1333 public key algorithms. New option to openssl utility:
1334 "list-public-key-algorithms" to print out info.
1337 *) Implement the Supported Elliptic Curves Extension for
1338 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1341 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1342 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1345 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1346 utilities such as rsa, dsa, dsaparam etc except they process any key
1350 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1351 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1352 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1356 *) Initial support for pluggable public key ASN1.
1357 De-spaghettify the public key ASN1 handling. Move public and private
1358 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1359 algorithm specific handling to a single module within the relevant
1360 algorithm directory. Add functions to allow (near) opaque processing
1361 of public and private key structures.
1364 *) Implement the Supported Point Formats Extension for
1365 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1368 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1369 for the psk identity [hint] and the psk callback functions to the
1370 SSL_SESSION, SSL and SSL_CTX structure.
1373 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1377 SSL_CTX_use_psk_identity_hint
1378 SSL_get_psk_identity_hint
1379 SSL_get_psk_identity
1380 SSL_use_psk_identity_hint
1382 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1384 *) Add RFC 3161 compliant time stamp request creation, response generation
1385 and response verification functionality.
1386 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1388 *) Add initial support for TLS extensions, specifically for the server_name
1389 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1390 have new members for a host name. The SSL data structure has an
1391 additional member SSL_CTX *initial_ctx so that new sessions can be
1392 stored in that context to allow for session resumption, even after the
1393 SSL has been switched to a new SSL_CTX in reaction to a client's
1394 server_name extension.
1396 New functions (subject to change):
1398 SSL_get_servername()
1399 SSL_get_servername_type()
1402 New CTRL codes and macros (subject to change):
1404 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1405 - SSL_CTX_set_tlsext_servername_callback()
1406 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1407 - SSL_CTX_set_tlsext_servername_arg()
1408 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1410 openssl s_client has a new '-servername ...' option.
1412 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1413 '-key2 ...', '-servername_fatal' (subject to change). This allows
1414 testing the HostName extension for a specific single host name ('-cert'
1415 and '-key' remain fallbacks for handshakes without HostName
1416 negotiation). If the unrecogninzed_name alert has to be sent, this by
1417 default is a warning; it becomes fatal with the '-servername_fatal'
1420 [Peter Sylvester, Remy Allais, Christophe Renou]
1422 *) Whirlpool hash implementation is added.
1425 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1426 bn(64,32). Because of instruction set limitations it doesn't have
1427 any negative impact on performance. This was done mostly in order
1428 to make it possible to share assembler modules, such as bn_mul_mont
1429 implementations, between 32- and 64-bit builds without hassle.
1432 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1433 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1437 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1438 dedicated Montgomery multiplication procedure, is introduced.
1439 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1440 "64-bit" performance on certain 32-bit targets.
1443 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1444 in SSL structures. New SSL ctrl to set maximum send fragment size.
1445 Save memory by seeting the I/O buffer sizes dynamically instead of
1446 using the maximum available value.
1449 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1450 in addition to the text details.
1453 *) Very, very preliminary EXPERIMENTAL support for printing of general
1454 ASN1 structures. This currently produces rather ugly output and doesn't
1455 handle several customised structures at all.
1458 *) Integrated support for PVK file format and some related formats such
1459 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1460 these in the 'rsa' and 'dsa' utilities.
1463 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1466 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1467 place for the (very old) "NETSCAPE" format certificates which are now
1468 handled using new ASN1 code equivalents.
1471 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1472 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1473 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1476 *) Modify CRL distribution points extension code to print out previously
1477 unsupported fields. Enhance extension setting code to allow setting of
1481 *) Add print and set support for Issuing Distribution Point CRL extension.
1484 *) Change 'Configure' script to enable Camellia by default.
1487 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1489 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1490 of the Vaudenay padding oracle attack on CBC mode encryption
1491 which enables an efficient plaintext recovery attack against
1492 the OpenSSL implementation of DTLS. Their attack exploits timing
1493 differences arising during decryption processing. A research
1494 paper describing this attack can be found at:
1495 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1496 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1497 Security Group at Royal Holloway, University of London
1498 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1499 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1500 for preparing the fix. (CVE-2011-4108)
1501 [Robin Seggelmann, Michael Tuexen]
1503 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1504 [Ben Laurie, Kasper <ekasper@google.com>]
1506 *) Clear bytes used for block padding of SSL 3.0 records.
1508 [Adam Langley (Google)]
1510 *) Only allow one SGC handshake restart for SSL/TLS. (CVE-2011-4619)
1511 [Adam Langley (Google)]
1513 *) Prevent malformed RFC3779 data triggering an assertion failure.
1514 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1515 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1516 [Rob Austein <sra@hactrn.net>]
1518 *) Fix ssl_ciph.c set-up race.
1519 [Adam Langley (Google)]
1521 *) Fix spurious failures in ecdsatest.c.
1522 [Emilia Käsper (Google)]
1524 *) Fix the BIO_f_buffer() implementation (which was mixing different
1525 interpretations of the '..._len' fields).
1526 [Adam Langley (Google)]
1528 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1529 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1530 threads won't reuse the same blinding coefficients.
1532 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1533 lock to call BN_BLINDING_invert_ex, and avoids one use of
1534 BN_BLINDING_update for each BN_BLINDING structure (previously,
1535 the last update always remained unused).
1536 [Emilia Käsper (Google)]
1538 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1539 for multi-threaded use of ECDH.
1540 [Adam Langley (Google)]
1542 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1545 *) Add protection against ECDSA timing attacks as mentioned in the paper
1546 by Billy Bob Brumley and Nicola Tuveri, see:
1548 http://eprint.iacr.org/2011/232.pdf
1550 [Billy Bob Brumley and Nicola Tuveri]
1552 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1554 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1555 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1557 *) Fix bug in string printing code: if *any* escaping is enabled we must
1558 escape the escape character (backslash) or the resulting string is
1562 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1564 *) Disable code workaround for ancient and obsolete Netscape browsers
1565 and servers: an attacker can use it in a ciphersuite downgrade attack.
1566 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1569 *) Fixed J-PAKE implementation error, originally discovered by
1570 Sebastien Martini, further info and confirmation from Stefan
1571 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1574 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1576 *) Fix extension code to avoid race conditions which can result in a buffer
1577 overrun vulnerability: resumed sessions must not be modified as they can
1578 be shared by multiple threads. CVE-2010-3864
1581 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1584 *) Don't reencode certificate when calculating signature: cache and use
1585 the original encoding instead. This makes signature verification of
1586 some broken encodings work correctly.
1589 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1590 is also one of the inputs.
1591 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1593 *) Don't repeatedly append PBE algorithms to table if they already exist.
1594 Sort table on each new add. This effectively makes the table read only
1595 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1599 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1601 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1604 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1605 access or freeing data twice (CVE-2010-0742)
1606 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1608 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1609 common in certificates and some applications which only call
1610 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1614 Reduce copying into .apps and .test in makevms.com
1615 Don't try to use blank CA certificate in CA.com
1616 Allow use of C files from original directories in maketests.com
1617 [Steven M. Schweda" <sms@antinode.info>]
1619 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1621 *) When rejecting SSL/TLS records due to an incorrect version number, never
1622 update s->server with a new major version number. As of
1623 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1624 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1625 the previous behavior could result in a read attempt at NULL when
1626 receiving specific incorrect SSL/TLS records once record payload
1627 protection is active. (CVE-2010-0740)
1628 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1630 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1631 could be crashed if the relevant tables were not present (e.g. chrooted).
1632 [Tomas Hoger <thoger@redhat.com>]
1634 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1636 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1637 [Martin Olsson, Neel Mehta]
1639 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1640 accommodate for stack sorting, always a write lock!).
1643 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1644 excessive delays in the RAND_poll(): over a minute. As a workaround
1645 include a time check in the inner Heap32Next loop too.
1648 *) The code that handled flushing of data in SSL/TLS originally used the
1649 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1650 the problem outlined in PR#1949. The fix suggested there however can
1651 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1652 of Apache). So instead simplify the code to flush unconditionally.
1653 This should be fine since flushing with no data to flush is a no op.
1656 *) Handle TLS versions 2.0 and later properly and correctly use the
1657 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1658 off ancient servers have a habit of sticking around for a while...
1661 *) Modify compression code so it frees up structures without using the
1662 ex_data callbacks. This works around a problem where some applications
1663 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1664 restarting) then use compression (e.g. SSL with compression) later.
1665 This results in significant per-connection memory leaks and
1666 has caused some security issues including CVE-2008-1678 and
1670 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1671 change when encrypting or decrypting.
1674 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1675 connect and renegotiate with servers which do not support RI.
1676 Until RI is more widely deployed this option is enabled by default.
1679 *) Add "missing" ssl ctrls to clear options and mode.
1682 *) If client attempts to renegotiate and doesn't support RI respond with
1683 a no_renegotiation alert as required by RFC5746. Some renegotiating
1684 TLS clients will continue a connection gracefully when they receive
1685 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1686 waiting for a server hello which it will never receive. Now we treat a
1687 received no_renegotiation alert as a fatal error. This is because
1688 applications requesting a renegotiation might well expect it to succeed
1689 and would have no code in place to handle the server denying it so the
1690 only safe thing to do is to terminate the connection.
1693 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1694 peer supports secure renegotiation and 0 otherwise. Print out peer
1695 renegotiation support in s_client/s_server.
1698 *) Replace the highly broken and deprecated SPKAC certification method with
1699 the updated NID creation version. This should correctly handle UTF8.
1702 *) Implement RFC5746. Re-enable renegotiation but require the extension
1703 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1704 turns out to be a bad idea. It has been replaced by
1705 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1706 SSL_CTX_set_options(). This is really not recommended unless you
1707 know what you are doing.
1708 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1710 *) Fixes to stateless session resumption handling. Use initial_ctx when
1711 issuing and attempting to decrypt tickets in case it has changed during
1712 servername handling. Use a non-zero length session ID when attempting
1713 stateless session resumption: this makes it possible to determine if
1714 a resumption has occurred immediately after receiving server hello
1715 (several places in OpenSSL subtly assume this) instead of later in
1719 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1720 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1721 fixes for a few places where the return code is not checked
1723 [Julia Lawall <julia@diku.dk>]
1725 *) Add --strict-warnings option to Configure script to include devteam
1726 warnings in other configurations.
1729 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1730 makes it possible to install openssl libraries in locations which
1731 have names other than "lib", for example "/usr/lib64" which some
1733 [Steve Henson, based on patch from Jeremy Utley]
1735 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1736 X690 8.9.12 and can produce some misleading textual output of OIDs.
1737 [Steve Henson, reported by Dan Kaminsky]
1739 *) Delete MD2 from algorithm tables. This follows the recommendation in
1740 several standards that it is not used in new applications due to
1741 several cryptographic weaknesses. For binary compatibility reasons
1742 the MD2 API is still compiled in by default.
1745 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1749 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1750 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1752 [Guenter <lists@gknw.net>]
1754 *) Fix the server certificate chain building code to use X509_verify_cert(),
1755 it used to have an ad-hoc builder which was unable to cope with anything
1756 other than a simple chain.
1757 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1759 *) Don't check self signed certificate signatures in X509_verify_cert()
1760 by default (a flag can override this): it just wastes time without
1761 adding any security. As a useful side effect self signed root CAs
1762 with non-FIPS digests are now usable in FIPS mode.
1765 *) In dtls1_process_out_of_seq_message() the check if the current message
1766 is already buffered was missing. For every new message was memory
1767 allocated, allowing an attacker to perform an denial of service attack
1768 with sending out of seq handshake messages until there is no memory
1769 left. Additionally every future messege was buffered, even if the
1770 sequence number made no sense and would be part of another handshake.
1771 So only messages with sequence numbers less than 10 in advance will be
1772 buffered. (CVE-2009-1378)
1773 [Robin Seggelmann, discovered by Daniel Mentz]
1775 *) Records are buffered if they arrive with a future epoch to be
1776 processed after finishing the corresponding handshake. There is
1777 currently no limitation to this buffer allowing an attacker to perform
1778 a DOS attack with sending records with future epochs until there is no
1779 memory left. This patch adds the pqueue_size() function to detemine
1780 the size of a buffer and limits the record buffer to 100 entries.
1782 [Robin Seggelmann, discovered by Daniel Mentz]
1784 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1785 parent structure is freed. (CVE-2009-1379)
1788 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1789 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1792 [Ilya O. <vrghost@gmail.com>]
1794 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1796 *) Disable renegotiation completely - this fixes a severe security
1797 problem (CVE-2009-3555) at the cost of breaking all
1798 renegotiation. Renegotiation can be re-enabled by setting
1799 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1800 run-time. This is really not recommended unless you know what
1804 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1806 *) Don't set val to NULL when freeing up structures, it is freed up by
1807 underlying code. If sizeof(void *) > sizeof(long) this can result in
1808 zeroing past the valid field. (CVE-2009-0789)
1809 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1811 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1812 checked correctly. This would allow some invalid signed attributes to
1813 appear to verify correctly. (CVE-2009-0591)
1814 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1816 *) Reject UniversalString and BMPString types with invalid lengths. This
1817 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1818 a legal length. (CVE-2009-0590)
1821 *) Set S/MIME signing as the default purpose rather than setting it
1822 unconditionally. This allows applications to override it at the store
1826 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1827 to handle some structures.
1830 *) Improve efficiency of mem_gets: don't search whole buffer each time
1832 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1834 *) New -hex option for openssl rand.
1837 *) Print out UTF8String and NumericString when parsing ASN1.
1840 *) Support NumericString type for name components.
1843 *) Allow CC in the environment to override the automatically chosen
1844 compiler. Note that nothing is done to ensure flags work with the
1848 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1850 *) Properly check EVP_VerifyFinal() and similar return values
1852 [Ben Laurie, Bodo Moeller, Google Security Team]
1854 *) Enable TLS extensions by default.
1857 *) Allow the CHIL engine to be loaded, whether the application is
1858 multithreaded or not. (This does not release the developer from the
1859 obligation to set up the dynamic locking callbacks.)
1860 [Sander Temme <sander@temme.net>]
1862 *) Use correct exit code if there is an error in dgst command.
1863 [Steve Henson; problem pointed out by Roland Dirlewanger]
1865 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1866 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1869 *) Add experimental JPAKE support, including demo authentication in
1870 s_client and s_server.
1873 *) Set the comparison function in v3_addr_canonize().
1874 [Rob Austein <sra@hactrn.net>]
1876 *) Add support for XMPP STARTTLS in s_client.
1877 [Philip Paeps <philip@freebsd.org>]
1879 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1880 to ensure that even with this option, only ciphersuites in the
1881 server's preference list will be accepted. (Note that the option
1882 applies only when resuming a session, so the earlier behavior was
1883 just about the algorithm choice for symmetric cryptography.)
1886 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1888 *) Fix NULL pointer dereference if a DTLS server received
1889 ChangeCipherSpec as first record (CVE-2009-1386).
1892 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1893 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1896 *) The fix in 0.9.8c that supposedly got rid of unsafe
1897 double-checked locking was incomplete for RSA blinding,
1898 addressing just one layer of what turns out to have been
1899 doubly unsafe triple-checked locking.
1901 So now fix this for real by retiring the MONT_HELPER macro
1902 in crypto/rsa/rsa_eay.c.
1904 [Bodo Moeller; problem pointed out by Marius Schilder]
1906 *) Various precautionary measures:
1908 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1910 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1911 (NB: This would require knowledge of the secret session ticket key
1912 to exploit, in which case you'd be SOL either way.)
1914 - Change bn_nist.c so that it will properly handle input BIGNUMs
1915 outside the expected range.
1917 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1920 [Neel Mehta, Bodo Moeller]
1922 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1923 the load fails. Useful for distros.
1924 [Ben Laurie and the FreeBSD team]
1926 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1929 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1932 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1934 This work was sponsored by Logica.
1937 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1938 keystores. Support for SSL/TLS client authentication too.
1939 Not compiled unless enable-capieng specified to Configure.
1941 This work was sponsored by Logica.
1944 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1945 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1946 attribute creation routines such as certifcate requests and PKCS#12
1950 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1952 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1953 handshake which could lead to a cilent crash as found using the
1954 Codenomicon TLS test suite (CVE-2008-1672)
1955 [Steve Henson, Mark Cox]
1957 *) Fix double free in TLS server name extensions which could lead to
1958 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1961 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1963 Clear the error queue to ensure that error entries left from
1964 older function calls do not interfere with the correct operation.
1965 [Lutz Jaenicke, Erik de Castro Lopo]
1967 *) Remove root CA certificates of commercial CAs:
1969 The OpenSSL project does not recommend any specific CA and does not
1970 have any policy with respect to including or excluding any CA.
1971 Therefore it does not make any sense to ship an arbitrary selection
1972 of root CA certificates with the OpenSSL software.
1975 *) RSA OAEP patches to fix two separate invalid memory reads.
1976 The first one involves inputs when 'lzero' is greater than
1977 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1978 before the beginning of from). The second one involves inputs where
1979 the 'db' section contains nothing but zeroes (there is a one-byte
1980 invalid read after the end of 'db').
1981 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1983 *) Partial backport from 0.9.9-dev:
1985 Introduce bn_mul_mont (dedicated Montgomery multiplication
1986 procedure) as a candidate for BIGNUM assembler implementation.
1987 While 0.9.9-dev uses assembler for various architectures, only
1988 x86_64 is available by default here in the 0.9.8 branch, and
1989 32-bit x86 is available through a compile-time setting.
1991 To try the 32-bit x86 assembler implementation, use Configure
1992 option "enable-montasm" (which exists only for this backport).
1994 As "enable-montasm" for 32-bit x86 disclaims code stability
1995 anyway, in this constellation we activate additional code
1996 backported from 0.9.9-dev for further performance improvements,
1997 namely BN_from_montgomery_word. (To enable this otherwise,
1998 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2000 [Andy Polyakov (backport partially by Bodo Moeller)]
2002 *) Add TLS session ticket callback. This allows an application to set
2003 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2004 values. This is useful for key rollover for example where several key
2005 sets may exist with different names.
2008 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2009 This was broken until now in 0.9.8 releases, such that the only way
2010 a registered ENGINE could be used (assuming it initialises
2011 successfully on the host) was to explicitly set it as the default
2012 for the relevant algorithms. This is in contradiction with 0.9.7
2013 behaviour and the documentation. With this fix, when an ENGINE is
2014 registered into a given algorithm's table of implementations, the
2015 'uptodate' flag is reset so that auto-discovery will be used next
2016 time a new context for that algorithm attempts to select an
2018 [Ian Lister (tweaked by Geoff Thorpe)]
2020 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2021 implemention in the following ways:
2023 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2026 Lack of BER streaming support means one pass streaming processing is
2027 only supported if data is detached: setting the streaming flag is
2028 ignored for embedded content.
2030 CMS support is disabled by default and must be explicitly enabled
2031 with the enable-cms configuration option.
2034 *) Update the GMP engine glue to do direct copies between BIGNUM and
2035 mpz_t when openssl and GMP use the same limb size. Otherwise the
2036 existing "conversion via a text string export" trick is still used.
2037 [Paul Sheer <paulsheer@gmail.com>]
2039 *) Zlib compression BIO. This is a filter BIO which compressed and
2040 uncompresses any data passed through it.
2043 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2044 RFC3394 compatible AES key wrapping.
2047 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2048 sets string data without copying. X509_ALGOR_set0() and
2049 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2050 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2051 from an X509_ATTRIBUTE structure optionally checking it occurs only
2052 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2056 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2057 to get the expected BN_FLG_CONSTTIME behavior.
2058 [Bodo Moeller (Google)]
2062 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2063 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2064 - added some more tests to do_tests.pl
2065 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2066 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2067 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2068 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2069 - various changes to netware.pl to enable gcc-cross builds on Win32
2071 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2072 - various changes to fix missing prototype warnings
2073 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2074 - added AES, WHIRLPOOL and CPUID assembler code to build files
2075 - added missing AES assembler make rules to mk1mf.pl
2076 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2077 [Guenter Knauf <eflash@gmx.net>]
2079 *) Implement certificate status request TLS extension defined in RFC3546.
2080 A client can set the appropriate parameters and receive the encoded
2081 OCSP response via a callback. A server can query the supplied parameters
2082 and set the encoded OCSP response in the callback. Add simplified examples
2083 to s_client and s_server.
2086 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2088 *) Fix various bugs:
2089 + Binary incompatibility of ssl_ctx_st structure
2090 + DTLS interoperation with non-compliant servers
2091 + Don't call get_session_cb() without proposed session
2092 + Fix ia64 assembler code
2093 [Andy Polyakov, Steve Henson]
2095 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2097 *) DTLS Handshake overhaul. There were longstanding issues with
2098 OpenSSL DTLS implementation, which were making it impossible for
2099 RFC 4347 compliant client to communicate with OpenSSL server.
2100 Unfortunately just fixing these incompatibilities would "cut off"
2101 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2102 server keeps tolerating non RFC compliant syntax. The opposite is
2103 not true, 0.9.8f client can not communicate with earlier server.
2104 This update even addresses CVE-2007-4995.
2107 *) Changes to avoid need for function casts in OpenSSL: some compilers
2108 (gcc 4.2 and later) reject their use.
2109 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2112 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2113 RFC4507bis. The encrypted ticket format is an encrypted encoded
2114 SSL_SESSION structure, that way new session features are automatically
2117 If a client application caches session in an SSL_SESSION structure
2118 support is transparent because tickets are now stored in the encoded
2121 The SSL_CTX structure automatically generates keys for ticket
2122 protection in servers so again support should be possible
2123 with no application modification.
2125 If a client or server wishes to disable RFC4507 support then the option
2126 SSL_OP_NO_TICKET can be set.
2128 Add a TLS extension debugging callback to allow the contents of any client
2129 or server extensions to be examined.
2131 This work was sponsored by Google.
2134 *) Add initial support for TLS extensions, specifically for the server_name
2135 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2136 have new members for a host name. The SSL data structure has an
2137 additional member SSL_CTX *initial_ctx so that new sessions can be
2138 stored in that context to allow for session resumption, even after the
2139 SSL has been switched to a new SSL_CTX in reaction to a client's
2140 server_name extension.
2142 New functions (subject to change):
2144 SSL_get_servername()
2145 SSL_get_servername_type()
2148 New CTRL codes and macros (subject to change):
2150 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2151 - SSL_CTX_set_tlsext_servername_callback()
2152 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2153 - SSL_CTX_set_tlsext_servername_arg()
2154 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2156 openssl s_client has a new '-servername ...' option.
2158 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2159 '-key2 ...', '-servername_fatal' (subject to change). This allows
2160 testing the HostName extension for a specific single host name ('-cert'
2161 and '-key' remain fallbacks for handshakes without HostName
2162 negotiation). If the unrecogninzed_name alert has to be sent, this by
2163 default is a warning; it becomes fatal with the '-servername_fatal'
2166 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2168 *) Add AES and SSE2 assembly language support to VC++ build.
2171 *) Mitigate attack on final subtraction in Montgomery reduction.
2174 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2175 (which previously caused an internal error).
2178 *) Squeeze another 10% out of IGE mode when in != out.
2181 *) AES IGE mode speedup.
2182 [Dean Gaudet (Google)]
2184 *) Add the Korean symmetric 128-bit cipher SEED (see
2185 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2186 add SEED ciphersuites from RFC 4162:
2188 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2189 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2190 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2191 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2193 To minimize changes between patchlevels in the OpenSSL 0.9.8
2194 series, SEED remains excluded from compilation unless OpenSSL
2195 is configured with 'enable-seed'.
2196 [KISA, Bodo Moeller]
2198 *) Mitigate branch prediction attacks, which can be practical if a
2199 single processor is shared, allowing a spy process to extract
2200 information. For detailed background information, see
2201 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2202 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2203 and Necessary Software Countermeasures"). The core of the change
2204 are new versions BN_div_no_branch() and
2205 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2206 respectively, which are slower, but avoid the security-relevant
2207 conditional branches. These are automatically called by BN_div()
2208 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2209 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2210 remove a conditional branch.
2212 BN_FLG_CONSTTIME is the new name for the previous
2213 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2214 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2215 in the exponent causes BN_mod_exp_mont() to use the alternative
2216 implementation in BN_mod_exp_mont_consttime().) The old name
2217 remains as a deprecated alias.
2219 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2220 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2221 constant-time implementations for more than just exponentiation.
2222 Here too the old name is kept as a deprecated alias.
2224 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2225 the BN_BLINDING structure gets an independent copy of the
2226 modulus. This means that the previous "BIGNUM *m" argument to
2227 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2228 essentially becomes "const BIGNUM *m", although we can't actually
2229 change this in the header file before 0.9.9. It allows
2230 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2231 enable BN_FLG_CONSTTIME.
2233 [Matthew D Wood (Intel Corp)]
2235 *) In the SSL/TLS server implementation, be strict about session ID
2236 context matching (which matters if an application uses a single
2237 external cache for different purposes). Previously,
2238 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2239 set. This did ensure strict client verification, but meant that,
2240 with applications using a single external cache for quite
2241 different requirements, clients could circumvent ciphersuite
2242 restrictions for a given session ID context by starting a session
2243 in a different context.
2246 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2247 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2248 authentication-only ciphersuites.
2251 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2252 not complete and could lead to a possible single byte overflow
2253 (CVE-2007-5135) [Ben Laurie]
2255 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2257 *) Since AES128 and AES256 (and similarly Camellia128 and
2258 Camellia256) share a single mask bit in the logic of
2259 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2260 kludge to work properly if AES128 is available and AES256 isn't
2261 (or if Camellia128 is available and Camellia256 isn't).
2264 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2265 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2266 When a point or a seed is encoded in a BIT STRING, we need to
2267 prevent the removal of trailing zero bits to get the proper DER
2268 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2269 of a NamedBitList, for which trailing 0 bits need to be removed.)
2272 *) Have SSL/TLS server implementation tolerate "mismatched" record
2273 protocol version while receiving ClientHello even if the
2274 ClientHello is fragmented. (The server can't insist on the
2275 particular protocol version it has chosen before the ServerHello
2276 message has informed the client about his choice.)
2279 *) Add RFC 3779 support.
2280 [Rob Austein for ARIN, Ben Laurie]
2282 *) Load error codes if they are not already present instead of using a
2283 static variable. This allows them to be cleanly unloaded and reloaded.
2284 Improve header file function name parsing.
2287 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2288 or CAPABILITY handshake as required by RFCs.
2291 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2293 *) Introduce limits to prevent malicious keys being able to
2294 cause a denial of service. (CVE-2006-2940)
2295 [Steve Henson, Bodo Moeller]
2297 *) Fix ASN.1 parsing of certain invalid structures that can result
2298 in a denial of service. (CVE-2006-2937) [Steve Henson]
2300 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2301 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2303 *) Fix SSL client code which could crash if connecting to a
2304 malicious SSLv2 server. (CVE-2006-4343)
2305 [Tavis Ormandy and Will Drewry, Google Security Team]
2307 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2308 match only those. Before that, "AES256-SHA" would be interpreted
2309 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2310 the same strength classification in 0.9.7h) as we currently only
2311 have a single AES bit in the ciphersuite description bitmap.
2312 That change, however, also applied to ciphersuite strings such as
2313 "RC4-MD5" that intentionally matched multiple ciphersuites --
2314 namely, SSL 2.0 ciphersuites in addition to the more common ones
2315 from SSL 3.0/TLS 1.0.
2317 So we change the selection algorithm again: Naming an explicit
2318 ciphersuite selects this one ciphersuite, and any other similar
2319 ciphersuite (same bitmap) from *other* protocol versions.
2320 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2321 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2323 Since SSL 2.0 does not have any ciphersuites for which the
2324 128/256 bit distinction would be relevant, this works for now.
2325 The proper fix will be to use different bits for AES128 and
2326 AES256, which would have avoided the problems from the beginning;
2327 however, bits are scarce, so we can only do this in a new release
2328 (not just a patchlevel) when we can change the SSL_CIPHER
2329 definition to split the single 'unsigned long mask' bitmap into
2330 multiple values to extend the available space.
2334 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2336 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2337 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2339 *) Add AES IGE and biIGE modes.
2342 *) Change the Unix randomness entropy gathering to use poll() when
2343 possible instead of select(), since the latter has some
2344 undesirable limitations.
2345 [Darryl Miles via Richard Levitte and Bodo Moeller]
2347 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2348 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2349 cannot be implicitly activated as part of, e.g., the "AES" alias.
2350 However, please upgrade to OpenSSL 0.9.9[-dev] for
2351 non-experimental use of the ECC ciphersuites to get TLS extension
2352 support, which is required for curve and point format negotiation
2353 to avoid potential handshake problems.
2356 *) Disable rogue ciphersuites:
2358 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2359 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2360 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2362 The latter two were purportedly from
2363 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2366 Also deactivate the remaining ciphersuites from
2367 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2368 unofficial, and the ID has long expired.
2371 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2372 dual-core machines) and other potential thread-safety issues.
2375 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2376 versions), which is now available for royalty-free use
2377 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2378 Also, add Camellia TLS ciphersuites from RFC 4132.
2380 To minimize changes between patchlevels in the OpenSSL 0.9.8
2381 series, Camellia remains excluded from compilation unless OpenSSL
2382 is configured with 'enable-camellia'.
2385 *) Disable the padding bug check when compression is in use. The padding
2386 bug check assumes the first packet is of even length, this is not
2387 necessarily true if compresssion is enabled and can result in false
2388 positives causing handshake failure. The actual bug test is ancient
2389 code so it is hoped that implementations will either have fixed it by
2390 now or any which still have the bug do not support compression.
2393 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2395 *) When applying a cipher rule check to see if string match is an explicit
2396 cipher suite and only match that one cipher suite if it is.
2399 *) Link in manifests for VC++ if needed.
2400 [Austin Ziegler <halostatue@gmail.com>]
2402 *) Update support for ECC-based TLS ciphersuites according to
2403 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2404 TLS extensions, which are supported starting with the 0.9.9
2405 branch, not in the OpenSSL 0.9.8 branch).
2408 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2409 opaque EVP_CIPHER_CTX handling.
2412 *) Fixes and enhancements to zlib compression code. We now only use
2413 "zlib1.dll" and use the default __cdecl calling convention on Win32
2414 to conform with the standards mentioned here:
2415 http://www.zlib.net/DLL_FAQ.txt
2416 Static zlib linking now works on Windows and the new --with-zlib-include
2417 --with-zlib-lib options to Configure can be used to supply the location
2418 of the headers and library. Gracefully handle case where zlib library
2422 *) Several fixes and enhancements to the OID generation code. The old code
2423 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2424 handle numbers larger than ULONG_MAX, truncated printing and had a
2425 non standard OBJ_obj2txt() behaviour.
2428 *) Add support for building of engines under engine/ as shared libraries
2429 under VC++ build system.
2432 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2433 Hopefully, we will not see any false combination of paths any more.
2436 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2438 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2439 (part of SSL_OP_ALL). This option used to disable the
2440 countermeasure against man-in-the-middle protocol-version
2441 rollback in the SSL 2.0 server implementation, which is a bad
2442 idea. (CVE-2005-2969)
2444 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2445 for Information Security, National Institute of Advanced Industrial
2446 Science and Technology [AIST], Japan)]
2448 *) Add two function to clear and return the verify parameter flags.
2451 *) Keep cipherlists sorted in the source instead of sorting them at
2452 runtime, thus removing the need for a lock.
2455 *) Avoid some small subgroup attacks in Diffie-Hellman.
2456 [Nick Mathewson and Ben Laurie]
2458 *) Add functions for well-known primes.
2461 *) Extended Windows CE support.
2462 [Satoshi Nakamura and Andy Polyakov]
2464 *) Initialize SSL_METHOD structures at compile time instead of during
2465 runtime, thus removing the need for a lock.
2468 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2469 attempting to decrypt each encrypted key in turn. Add support to
2473 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2475 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2478 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2481 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2482 key into the same file any more.
2485 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2488 *) Add -utf8 command line and config file option to 'ca'.
2489 [Stefan <stf@udoma.org]
2491 *) Removed the macro des_crypt(), as it seems to conflict with some
2492 libraries. Use DES_crypt().
2495 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2496 involves renaming the source and generated shared-libs for
2497 both. The engines will accept the corrected or legacy ids
2498 ('ncipher' and '4758_cca' respectively) when binding. NB,
2499 this only applies when building 'shared'.
2500 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2502 *) Add attribute functions to EVP_PKEY structure. Modify
2503 PKCS12_create() to recognize a CSP name attribute and
2504 use it. Make -CSP option work again in pkcs12 utility.
2507 *) Add new functionality to the bn blinding code:
2508 - automatic re-creation of the BN_BLINDING parameters after
2509 a fixed number of uses (currently 32)
2510 - add new function for parameter creation
2511 - introduce flags to control the update behaviour of the
2512 BN_BLINDING parameters
2513 - hide BN_BLINDING structure
2514 Add a second BN_BLINDING slot to the RSA structure to improve
2515 performance when a single RSA object is shared among several
2519 *) Add support for DTLS.
2520 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2522 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2523 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2526 *) Remove buggy and incompletet DH cert support from
2527 ssl/ssl_rsa.c and ssl/s3_both.c
2530 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2531 the apps/openssl applications.
2534 *) Compile clean with "-Wall -Wmissing-prototypes
2535 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2536 DEBUG_SAFESTACK must also be set.
2539 *) Change ./Configure so that certain algorithms can be disabled by default.
2540 The new counterpiece to "no-xxx" is "enable-xxx".
2542 The patented RC5 and MDC2 algorithms will now be disabled unless
2543 "enable-rc5" and "enable-mdc2", respectively, are specified.
2545 (IDEA remains enabled despite being patented. This is because IDEA
2546 is frequently required for interoperability, and there is no license
2547 fee for non-commercial use. As before, "no-idea" can be used to
2548 avoid this algorithm.)
2552 *) Add processing of proxy certificates (see RFC 3820). This work was
2553 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2554 EGEE (Enabling Grids for E-science in Europe).
2557 *) RC4 performance overhaul on modern architectures/implementations, such
2558 as Intel P4, IA-64 and AMD64.
2561 *) New utility extract-section.pl. This can be used specify an alternative
2562 section number in a pod file instead of having to treat each file as
2563 a separate case in Makefile. This can be done by adding two lines to the
2566 =for comment openssl_section:XXX
2568 The blank line is mandatory.
2572 *) New arguments -certform, -keyform and -pass for s_client and s_server
2573 to allow alternative format key and certificate files and passphrase
2577 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2578 update associated structures and add various utility functions.
2580 Add new policy related verify parameters, include policy checking in
2581 standard verify code. Enhance 'smime' application with extra parameters
2582 to support policy checking and print out.
2585 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2586 Nehemiah processors. These extensions support AES encryption in hardware
2587 as well as RNG (though RNG support is currently disabled).
2588 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2590 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2593 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2594 [Andy Polyakov and a number of other people]
2596 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2597 implementation contributed by IBM.
2598 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2600 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2601 exponent rather than 'unsigned long'. There is a corresponding change to
2602 the new 'rsa_keygen' element of the RSA_METHOD structure.
2603 [Jelte Jansen, Geoff Thorpe]
2605 *) Functionality for creating the initial serial number file is now
2606 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2608 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2609 number file to 1, which is bound to cause problems. To avoid
2610 the problems while respecting compatibility between different 0.9.7
2611 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2612 CA.pl for serial number initialization. With the new release 0.9.8,
2613 we can fix the problem directly in the 'ca' utility.)
2616 *) Reduced header interdepencies by declaring more opaque objects in
2617 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2618 give fewer recursive includes, which could break lazy source code - so
2619 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2620 developers should define this symbol when building and using openssl to
2621 ensure they track the recommended behaviour, interfaces, [etc], but
2622 backwards-compatible behaviour prevails when this isn't defined.
2625 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2628 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2629 This will generate a random key of the appropriate length based on the
2630 cipher context. The EVP_CIPHER can provide its own random key generation
2631 routine to support keys of a specific form. This is used in the des and
2632 3des routines to generate a key of the correct parity. Update S/MIME
2633 code to use new functions and hence generate correct parity DES keys.
2634 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2635 valid (weak or incorrect parity).
2638 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2639 as looking them up. This is useful when the verified structure may contain
2640 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2641 present unless the new PKCS7_NO_CRL flag is asserted.
2644 *) Extend ASN1 oid configuration module. It now additionally accepts the
2647 shortName = some long name, 1.2.3.4
2650 *) Reimplemented the BN_CTX implementation. There is now no more static
2651 limitation on the number of variables it can handle nor the depth of the
2652 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2653 information can now expand as required, and rather than having a single
2654 static array of bignums, BN_CTX now uses a linked-list of such arrays
2655 allowing it to expand on demand whilst maintaining the usefulness of
2656 BN_CTX's "bundling".
2659 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2660 to allow all RSA operations to function using a single BN_CTX.
2663 *) Preliminary support for certificate policy evaluation and checking. This
2664 is initially intended to pass the tests outlined in "Conformance Testing
2665 of Relying Party Client Certificate Path Processing Logic" v1.07.
2668 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2669 remained unused and not that useful. A variety of other little bignum
2670 tweaks and fixes have also been made continuing on from the audit (see
2674 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2675 associated ASN1, EVP and SSL functions and old ASN1 macros.
2678 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2679 and this should never fail. So the return value from the use of
2680 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2681 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2684 *) BN_CTX_get() should return zero-valued bignums, providing the same
2685 initialised value as BN_new().
2686 [Geoff Thorpe, suggested by Ulf Möller]
2688 *) Support for inhibitAnyPolicy certificate extension.
2691 *) An audit of the BIGNUM code is underway, for which debugging code is
2692 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2693 is considered valid when processing BIGNUMs, and causes execution to
2694 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2695 further steps are taken to deliberately pollute unused data in BIGNUM
2696 structures to try and expose faulty code further on. For now, openssl will
2697 (in its default mode of operation) continue to tolerate the inconsistent
2698 forms that it has tolerated in the past, but authors and packagers should
2699 consider trying openssl and their own applications when compiled with
2700 these debugging symbols defined. It will help highlight potential bugs in
2701 their own code, and will improve the test coverage for OpenSSL itself. At
2702 some point, these tighter rules will become openssl's default to improve
2703 maintainability, though the assert()s and other overheads will remain only
2704 in debugging configurations. See bn.h for more details.
2705 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2707 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2708 that can only be obtained through BN_CTX_new() (which implicitly
2709 initialises it). The presence of this function only made it possible
2710 to overwrite an existing structure (and cause memory leaks).
2713 *) Because of the callback-based approach for implementing LHASH as a
2714 template type, lh_insert() adds opaque objects to hash-tables and
2715 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2716 to clean up those corresponding objects before destroying the hash table
2717 (and losing the object pointers). So some over-zealous constifications in
2718 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2719 objects as "const" and the lh_doall[_arg] callback wrappers are not
2720 prototyped to have "const" restrictions on the object pointers they are
2721 given (and so aren't required to cast them away any more).
2724 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2725 (speed) prefers to use its own implementation. The two implementations
2726 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2727 its object type properly exposed (MS_TM) instead of casting to/from "char
2728 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2729 aren't necessarily the greatest nomenclatures - but this is what was used
2730 internally to the implementation so I've used that for now.
2733 *) Ensure that deprecated functions do not get compiled when
2734 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2735 the self-tests were still using deprecated key-generation functions so
2736 these have been updated also.
2739 *) Reorganise PKCS#7 code to separate the digest location functionality
2740 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2741 New function PKCS7_set_digest() to set the digest type for PKCS#7
2742 digestedData type. Add additional code to correctly generate the
2743 digestedData type and add support for this type in PKCS7 initialization
2747 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2748 structure of type "other".
2751 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2752 sure the loop does correctly stop and breaking ("division by zero")
2753 modulus operations are not performed. The (pre-generated) prime
2754 table crypto/bn/bn_prime.h was already correct, but it could not be
2755 re-generated on some platforms because of the "division by zero"
2756 situation in the script.
2757 [Ralf S. Engelschall]
2759 *) Update support for ECC-based TLS ciphersuites according to
2760 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2761 SHA-1 now is only used for "small" curves (where the
2762 representation of a field element takes up to 24 bytes); for
2763 larger curves, the field element resulting from ECDH is directly
2764 used as premaster secret.
2765 [Douglas Stebila (Sun Microsystems Laboratories)]
2767 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2768 curve secp160r1 to the tests.
2769 [Douglas Stebila (Sun Microsystems Laboratories)]
2771 *) Add the possibility to load symbols globally with DSO.
2772 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2774 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2775 control of the error stack.
2778 *) Add support for STORE in ENGINE.
2781 *) Add the STORE type. The intention is to provide a common interface
2782 to certificate and key stores, be they simple file-based stores, or
2783 HSM-type store, or LDAP stores, or...
2784 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2787 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2788 pass a list of arguments to any function as well as provide a way
2789 for a function to pass data back to the caller.
2792 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2793 works like BUF_strdup() but can be used to duplicate a portion of
2794 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2798 *) Add the function sk_find_ex() which works like sk_find(), but will
2799 return an index to an element even if an exact match couldn't be
2800 found. The index is guaranteed to point at the element where the
2801 searched-for key would be inserted to preserve sorting order.
2804 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2805 takes an extra flags argument for optional functionality. Currently,
2806 the following flags are defined:
2808 OBJ_BSEARCH_VALUE_ON_NOMATCH
2809 This one gets OBJ_bsearch_ex() to return a pointer to the first
2810 element where the comparing function returns a negative or zero
2813 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2814 This one gets OBJ_bsearch_ex() to return a pointer to the first
2815 element where the comparing function returns zero. This is useful
2816 if there are more than one element where the comparing function
2820 *) Make it possible to create self-signed certificates with 'openssl ca'
2821 in such a way that the self-signed certificate becomes part of the
2822 CA database and uses the same mechanisms for serial number generation
2823 as all other certificate signing. The new flag '-selfsign' enables
2824 this functionality. Adapt CA.sh and CA.pl.in.
2827 *) Add functionality to check the public key of a certificate request
2828 against a given private. This is useful to check that a certificate
2829 request can be signed by that key (self-signing).
2832 *) Make it possible to have multiple active certificates with the same
2833 subject in the CA index file. This is done only if the keyword
2834 'unique_subject' is set to 'no' in the main CA section (default
2835 if 'CA_default') of the configuration file. The value is saved
2836 with the database itself in a separate index attribute file,
2837 named like the index file with '.attr' appended to the name.
2840 *) Generate muti valued AVAs using '+' notation in config files for
2844 *) Support for nameConstraints certificate extension.
2847 *) Support for policyConstraints certificate extension.
2850 *) Support for policyMappings certificate extension.
2853 *) Make sure the default DSA_METHOD implementation only uses its
2854 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2855 and change its own handlers to be NULL so as to remove unnecessary
2856 indirection. This lets alternative implementations fallback to the
2857 default implementation more easily.
2860 *) Support for directoryName in GeneralName related extensions
2864 *) Make it possible to link applications using Makefile.shared.
2865 Make that possible even when linking against static libraries!
2868 *) Support for single pass processing for S/MIME signing. This now
2869 means that S/MIME signing can be done from a pipe, in addition
2870 cleartext signing (multipart/signed type) is effectively streaming
2871 and the signed data does not need to be all held in memory.
2873 This is done with a new flag PKCS7_STREAM. When this flag is set
2874 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2875 is done after the data is output (and digests calculated) in
2876 SMIME_write_PKCS7().
2879 *) Add full support for -rpath/-R, both in shared libraries and
2880 applications, at least on the platforms where it's known how
2884 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2885 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2886 will now compute a table of multiples of the generator that
2887 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2888 faster (notably in the case of a single point multiplication,
2889 scalar * generator).
2890 [Nils Larsch, Bodo Moeller]
2892 *) IPv6 support for certificate extensions. The various extensions
2893 which use the IP:a.b.c.d can now take IPv6 addresses using the
2894 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2898 *) Added an ENGINE that implements RSA by performing private key
2899 exponentiations with the GMP library. The conversions to and from
2900 GMP's mpz_t format aren't optimised nor are any montgomery forms
2901 cached, and on x86 it appears OpenSSL's own performance has caught up.
2902 However there are likely to be other architectures where GMP could
2903 provide a boost. This ENGINE is not built in by default, but it can be
2904 specified at Configure time and should be accompanied by the necessary
2905 linker additions, eg;
2906 ./config -DOPENSSL_USE_GMP -lgmp
2909 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2910 testing availability of engines with "-t" - the old behaviour is
2911 produced by increasing the feature's verbosity with "-tt".
2914 *) ECDSA routines: under certain error conditions uninitialized BN objects
2915 could be freed. Solution: make sure initialization is performed early
2916 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2920 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2921 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2922 software implementations. For DSA and DH, parameter generation can
2923 also be overriden by providing the appropriate method callbacks.
2926 *) Change the "progress" mechanism used in key-generation and
2927 primality testing to functions that take a new BN_GENCB pointer in
2928 place of callback/argument pairs. The new API functions have "_ex"
2929 postfixes and the older functions are reimplemented as wrappers for
2930 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2931 declarations of the old functions to help (graceful) attempts to
2932 migrate to the new functions. Also, the new key-generation API
2933 functions operate on a caller-supplied key-structure and return
2934 success/failure rather than returning a key or NULL - this is to
2935 help make "keygen" another member function of RSA_METHOD etc.
2937 Example for using the new callback interface:
2939 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2943 BN_GENCB_set(&my_cb, my_callback, my_arg);
2945 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2946 /* For the meaning of a, b in calls to my_callback(), see the
2947 * documentation of the function that calls the callback.
2948 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2949 * my_callback should return 1 if it wants BN_is_prime_ex()
2950 * to continue, or 0 to stop.
2955 *) Change the ZLIB compression method to be stateful, and make it
2956 available to TLS with the number defined in
2957 draft-ietf-tls-compression-04.txt.
2960 *) Add the ASN.1 structures and functions for CertificatePair, which
2961 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2963 CertificatePair ::= SEQUENCE {
2964 forward [0] Certificate OPTIONAL,
2965 reverse [1] Certificate OPTIONAL,
2966 -- at least one of the pair shall be present -- }
2968 Also implement the PEM functions to read and write certificate
2969 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2971 This needed to be defined, mostly for the sake of the LDAP
2972 attribute crossCertificatePair, but may prove useful elsewhere as
2976 *) Make it possible to inhibit symlinking of shared libraries in
2977 Makefile.shared, for Cygwin's sake.
2980 *) Extend the BIGNUM API by creating a function
2981 void BN_set_negative(BIGNUM *a, int neg);
2982 and a macro that behave like
2983 int BN_is_negative(const BIGNUM *a);
2985 to avoid the need to access 'a->neg' directly in applications.
2988 *) Implement fast modular reduction for pseudo-Mersenne primes
2989 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2990 EC_GROUP_new_curve_GFp() will now automatically use this
2992 [Nils Larsch <nla@trustcenter.de>]
2994 *) Add new lock type (CRYPTO_LOCK_BN).
2997 *) Change the ENGINE framework to automatically load engines
2998 dynamically from specific directories unless they could be
2999 found to already be built in or loaded. Move all the
3000 current engines except for the cryptodev one to a new
3002 The engines in engines/ are built as shared libraries if
3003 the "shared" options was given to ./Configure or ./config.
3004 Otherwise, they are inserted in libcrypto.a.
3005 /usr/local/ssl/engines is the default directory for dynamic
3006 engines, but that can be overriden at configure time through
3007 the usual use of --prefix and/or --openssldir, and at run
3008 time with the environment variable OPENSSL_ENGINES.
3009 [Geoff Thorpe and Richard Levitte]
3011 *) Add Makefile.shared, a helper makefile to build shared
3012 libraries. Addapt Makefile.org.
3015 *) Add version info to Win32 DLLs.
3016 [Peter 'Luna' Runestig" <peter@runestig.com>]
3018 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3019 can be added using this API to created arbitrary PKCS#12
3020 files while avoiding the low level API.
3022 New options to PKCS12_create(), key or cert can be NULL and
3023 will then be omitted from the output file. The encryption
3024 algorithm NIDs can be set to -1 for no encryption, the mac
3025 iteration count can be set to 0 to omit the mac.
3027 Enhance pkcs12 utility by making the -nokeys and -nocerts
3028 options work when creating a PKCS#12 file. New option -nomac
3029 to omit the mac, NONE can be set for an encryption algorithm.
3030 New code is modified to use the enhanced PKCS12_create()
3031 instead of the low level API.
3034 *) Extend ASN1 encoder to support indefinite length constructed
3035 encoding. This can output sequences tags and octet strings in
3036 this form. Modify pk7_asn1.c to support indefinite length
3037 encoding. This is experimental and needs additional code to
3038 be useful, such as an ASN1 bio and some enhanced streaming
3041 Extend template encode functionality so that tagging is passed
3042 down to the template encoder.
3045 *) Let 'openssl req' fail if an argument to '-newkey' is not
3046 recognized instead of using RSA as a default.
3049 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3050 As these are not official, they are not included in "ALL";
3051 the "ECCdraft" ciphersuite group alias can be used to select them.
3052 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3054 *) Add ECDH engine support.
3055 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3057 *) Add ECDH in new directory crypto/ecdh/.
3058 [Douglas Stebila (Sun Microsystems Laboratories)]
3060 *) Let BN_rand_range() abort with an error after 100 iterations
3061 without success (which indicates a broken PRNG).
3064 *) Change BN_mod_sqrt() so that it verifies that the input value
3065 is really the square of the return value. (Previously,
3066 BN_mod_sqrt would show GIGO behaviour.)
3069 *) Add named elliptic curves over binary fields from X9.62, SECG,
3070 and WAP/WTLS; add OIDs that were still missing.
3072 [Sheueling Chang Shantz and Douglas Stebila
3073 (Sun Microsystems Laboratories)]
3075 *) Extend the EC library for elliptic curves over binary fields
3076 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3079 EC_GF2m_simple_method
3083 EC_GROUP_new_curve_GF2m
3084 EC_GROUP_set_curve_GF2m
3085 EC_GROUP_get_curve_GF2m
3086 EC_POINT_set_affine_coordinates_GF2m
3087 EC_POINT_get_affine_coordinates_GF2m
3088 EC_POINT_set_compressed_coordinates_GF2m
3090 Point compression for binary fields is disabled by default for
3091 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3094 As binary polynomials are represented as BIGNUMs, various members
3095 of the EC_GROUP and EC_POINT data structures can be shared
3096 between the implementations for prime fields and binary fields;
3097 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3098 are essentially identical to their ..._GFp counterparts.
3099 (For simplicity, the '..._GFp' prefix has been dropped from
3100 various internal method names.)
3102 An internal 'field_div' method (similar to 'field_mul' and
3103 'field_sqr') has been added; this is used only for binary fields.
3105 [Sheueling Chang Shantz and Douglas Stebila
3106 (Sun Microsystems Laboratories)]
3108 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3109 through methods ('mul', 'precompute_mult').
3111 The generic implementations (now internally called 'ec_wNAF_mul'
3112 and 'ec_wNAF_precomputed_mult') remain the default if these
3113 methods are undefined.
3115 [Sheueling Chang Shantz and Douglas Stebila
3116 (Sun Microsystems Laboratories)]
3118 *) New function EC_GROUP_get_degree, which is defined through
3119 EC_METHOD. For curves over prime fields, this returns the bit
3120 length of the modulus.
3122 [Sheueling Chang Shantz and Douglas Stebila
3123 (Sun Microsystems Laboratories)]
3125 *) New functions EC_GROUP_dup, EC_POINT_dup.
3126 (These simply call ..._new and ..._copy).
3128 [Sheueling Chang Shantz and Douglas Stebila
3129 (Sun Microsystems Laboratories)]
3131 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3132 Polynomials are represented as BIGNUMs (where the sign bit is not
3133 used) in the following functions [macros]:
3136 BN_GF2m_sub [= BN_GF2m_add]
3137 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3138 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3139 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3141 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3142 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3143 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3144 BN_GF2m_cmp [= BN_ucmp]
3146 (Note that only the 'mod' functions are actually for fields GF(2^m).
3147 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3149 For some functions, an the irreducible polynomial defining a
3150 field can be given as an 'unsigned int[]' with strictly
3151 decreasing elements giving the indices of those bits that are set;
3152 i.e., p[] represents the polynomial
3153 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3155 p[0] > p[1] > ... > p[k] = 0.
3156 This applies to the following functions:
3161 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3162 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3164 BN_GF2m_mod_sqrt_arr
3165 BN_GF2m_mod_solve_quad_arr
3169 Conversion can be performed by the following functions:
3174 bntest.c has additional tests for binary polynomial arithmetic.
3176 Two implementations for BN_GF2m_mod_div() are available.
3177 The default algorithm simply uses BN_GF2m_mod_inv() and
3178 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3179 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3180 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3182 [Sheueling Chang Shantz and Douglas Stebila
3183 (Sun Microsystems Laboratories)]
3185 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3186 functionality is disabled at compile-time.
3187 [Douglas Stebila <douglas.stebila@sun.com>]
3189 *) Change default behaviour of 'openssl asn1parse' so that more
3190 information is visible when viewing, e.g., a certificate:
3192 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3193 mode the content of non-printable OCTET STRINGs is output in a
3194 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3195 avoid the appearance of a printable string.
3196 [Nils Larsch <nla@trustcenter.de>]
3198 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3200 EC_GROUP_set_asn1_flag()
3201 EC_GROUP_get_asn1_flag()
3202 EC_GROUP_set_point_conversion_form()
3203 EC_GROUP_get_point_conversion_form()
3204 These control ASN1 encoding details:
3205 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3206 has been set to OPENSSL_EC_NAMED_CURVE.
3207 - Points are encoded in uncompressed form by default; options for
3208 asn1_for are as for point2oct, namely
3209 POINT_CONVERSION_COMPRESSED
3210 POINT_CONVERSION_UNCOMPRESSED
3211 POINT_CONVERSION_HYBRID
3213 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3216 EC_GROUP_get0_seed()
3217 EC_GROUP_get_seed_len()
3218 This is used only for ASN1 purposes (so far).
3219 [Nils Larsch <nla@trustcenter.de>]
3221 *) Add 'field_type' member to EC_METHOD, which holds the NID
3222 of the appropriate field type OID. The new function
3223 EC_METHOD_get_field_type() returns this value.
3224 [Nils Larsch <nla@trustcenter.de>]
3229 EC_POINT_point2hex()
3230 EC_POINT_hex2point()
3231 providing useful interfaces to EC_POINT_point2oct() and
3232 EC_POINT_oct2point().
3233 [Nils Larsch <nla@trustcenter.de>]
3235 *) Change internals of the EC library so that the functions
3236 EC_GROUP_set_generator()
3237 EC_GROUP_get_generator()
3238 EC_GROUP_get_order()
3239 EC_GROUP_get_cofactor()
3240 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3241 to methods, which would lead to unnecessary code duplication when
3242 adding different types of curves.
3243 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3245 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3246 arithmetic, and such that modified wNAFs are generated
3247 (which avoid length expansion in many cases).
3250 *) Add a function EC_GROUP_check_discriminant() (defined via
3251 EC_METHOD) that verifies that the curve discriminant is non-zero.
3253 Add a function EC_GROUP_check() that makes some sanity tests
3254 on a EC_GROUP, its generator and order. This includes
3255 EC_GROUP_check_discriminant().
3256 [Nils Larsch <nla@trustcenter.de>]
3258 *) Add ECDSA in new directory crypto/ecdsa/.
3260 Add applications 'openssl ecparam' and 'openssl ecdsa'
3261 (these are based on 'openssl dsaparam' and 'openssl dsa').
3263 ECDSA support is also included in various other files across the
3264 library. Most notably,
3265 - 'openssl req' now has a '-newkey ecdsa:file' option;
3266 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3267 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3268 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3269 them suitable for ECDSA where domain parameters must be
3270 extracted before the specific public key;
3271 - ECDSA engine support has been added.
3272 [Nils Larsch <nla@trustcenter.de>]
3274 *) Include some named elliptic curves, and add OIDs from X9.62,
3275 SECG, and WAP/WTLS. Each curve can be obtained from the new
3277 EC_GROUP_new_by_curve_name(),
3278 and the list of available named curves can be obtained with
3279 EC_get_builtin_curves().
3280 Also add a 'curve_name' member to EC_GROUP objects, which can be
3282 EC_GROUP_set_curve_name()
3283 EC_GROUP_get_curve_name()
3284 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3286 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3287 was actually never needed) and in BN_mul(). The removal in BN_mul()
3288 required a small change in bn_mul_part_recursive() and the addition
3289 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3290 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3291 bn_sub_words() and bn_add_words() except they take arrays with
3295 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3297 *) Cleanse PEM buffers before freeing them since they may contain
3299 [Benjamin Bennett <ben@psc.edu>]
3301 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3302 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3303 authentication-only ciphersuites.
3306 *) Since AES128 and AES256 share a single mask bit in the logic of
3307 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3308 kludge to work properly if AES128 is available and AES256 isn't.
3311 *) Expand security boundary to match 1.1.1 module.
3314 *) Remove redundant features: hash file source, editing of test vectors
3315 modify fipsld to use external fips_premain.c signature.
3318 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3319 run algorithm test programs.
3322 *) Make algorithm test programs more tolerant of whitespace.
3325 *) Have SSL/TLS server implementation tolerate "mismatched" record
3326 protocol version while receiving ClientHello even if the
3327 ClientHello is fragmented. (The server can't insist on the
3328 particular protocol version it has chosen before the ServerHello
3329 message has informed the client about his choice.)
3332 *) Load error codes if they are not already present instead of using a
3333 static variable. This allows them to be cleanly unloaded and reloaded.
3336 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3338 *) Introduce limits to prevent malicious keys being able to
3339 cause a denial of service. (CVE-2006-2940)
3340 [Steve Henson, Bodo Moeller]
3342 *) Fix ASN.1 parsing of certain invalid structures that can result
3343 in a denial of service. (CVE-2006-2937) [Steve Henson]
3345 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3346 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3348 *) Fix SSL client code which could crash if connecting to a
3349 malicious SSLv2 server. (CVE-2006-4343)
3350 [Tavis Ormandy and Will Drewry, Google Security Team]
3352 *) Change ciphersuite string processing so that an explicit
3353 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3354 will no longer include "AES128-SHA"), and any other similar
3355 ciphersuite (same bitmap) from *other* protocol versions (so that
3356 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3357 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3358 changes from 0.9.8b and 0.9.8d.
3361 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3363 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3364 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3366 *) Change the Unix randomness entropy gathering to use poll() when
3367 possible instead of select(), since the latter has some
3368 undesirable limitations.
3369 [Darryl Miles via Richard Levitte and Bodo Moeller]
3371 *) Disable rogue ciphersuites:
3373 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3374 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3375 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3377 The latter two were purportedly from
3378 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3381 Also deactive the remaining ciphersuites from
3382 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3383 unofficial, and the ID has long expired.
3386 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3387 dual-core machines) and other potential thread-safety issues.
3390 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3392 *) Adapt fipsld and the build system to link against the validated FIPS
3393 module in FIPS mode.
3396 *) Fixes for VC++ 2005 build under Windows.
3399 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3400 from a Windows bash shell such as MSYS. It is autodetected from the
3401 "config" script when run from a VC++ environment. Modify standard VC++
3402 build to use fipscanister.o from the GNU make build.
3405 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3407 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3408 The value now differs depending on if you build for FIPS or not.
3409 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3410 safely run with a non-FIPSed libcrypto, as it may crash because of
3411 the difference induced by this change.
3414 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3416 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3417 (part of SSL_OP_ALL). This option used to disable the
3418 countermeasure against man-in-the-middle protocol-version
3419 rollback in the SSL 2.0 server implementation, which is a bad
3420 idea. (CVE-2005-2969)
3422 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3423 for Information Security, National Institute of Advanced Industrial
3424 Science and Technology [AIST], Japan)]
3426 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3427 mainly for FIPS compliance and not fully integrated at this stage.
3430 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3431 the exponentiation using a fixed-length exponent. (Otherwise,
3432 the information leaked through timing could expose the secret key
3433 after many signatures; cf. Bleichenbacher's attack on DSA with
3437 *) Make a new fixed-window mod_exp implementation the default for
3438 RSA, DSA, and DH private-key operations so that the sequence of
3439 squares and multiplies and the memory access pattern are
3440 independent of the particular secret key. This will mitigate
3441 cache-timing and potential related attacks.
3443 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3444 and this is automatically used by BN_mod_exp_mont() if the new flag
3445 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3446 will use this BN flag for private exponents unless the flag
3447 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3448 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3450 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3452 *) Change the client implementation for SSLv23_method() and
3453 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3454 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3455 (Previously, the SSL 2.0 backwards compatible Client Hello
3456 message format would be used even with SSL_OP_NO_SSLv2.)
3459 *) Add support for smime-type MIME parameter in S/MIME messages which some
3463 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3464 a threadsafe manner. Modify rsa code to use new function and add calls
3465 to dsa and dh code (which had race conditions before).
3468 *) Include the fixed error library code in the C error file definitions
3469 instead of fixing them up at runtime. This keeps the error code
3470 structures constant.
3473 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3475 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3478 *) Fixes for newer kerberos headers. NB: the casts are needed because
3479 the 'length' field is signed on one version and unsigned on another
3480 with no (?) obvious way to tell the difference, without these VC++
3481 complains. Also the "definition" of FAR (blank) is no longer included
3482 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3483 some needed definitions.
3486 *) Undo Cygwin change.
3489 *) Added support for proxy certificates according to RFC 3820.
3490 Because they may be a security thread to unaware applications,
3491 they must be explicitely allowed in run-time. See
3492 docs/HOWTO/proxy_certificates.txt for further information.
3495 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3497 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3498 server and client random values. Previously
3499 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3500 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3502 This change has negligible security impact because:
3504 1. Server and client random values still have 24 bytes of pseudo random
3507 2. Server and client random values are sent in the clear in the initial
3510 3. The master secret is derived using the premaster secret (48 bytes in
3511 size for static RSA ciphersuites) as well as client server and random
3514 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3517 [Stephen Henson, reported by UK NISCC]
3519 *) Use Windows randomness collection on Cygwin.
3522 *) Fix hang in EGD/PRNGD query when communication socket is closed
3523 prematurely by EGD/PRNGD.
3524 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3526 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3529 *) Back-port of selected performance improvements from development
3530 branch, as well as improved support for PowerPC platforms.
3533 *) Add lots of checks for memory allocation failure, error codes to indicate
3534 failure and freeing up memory if a failure occurs.
3535 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3537 *) Add new -passin argument to dgst.
3540 *) Perform some character comparisons of different types in X509_NAME_cmp:
3541 this is needed for some certificates that reencode DNs into UTF8Strings
3542 (in violation of RFC3280) and can't or wont issue name rollover
3546 *) Make an explicit check during certificate validation to see that
3547 the CA setting in each certificate on the chain is correct. As a
3548 side effect always do the following basic checks on extensions,
3549 not just when there's an associated purpose to the check:
3551 - if there is an unhandled critical extension (unless the user
3552 has chosen to ignore this fault)
3553 - if the path length has been exceeded (if one is set at all)
3554 - that certain extensions fit the associated purpose (if one has
3558 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3560 *) Avoid a race condition when CRLs are checked in a multi threaded
3561 environment. This would happen due to the reordering of the revoked
3562 entries during signature checking and serial number lookup. Now the
3563 encoding is cached and the serial number sort performed under a lock.
3564 Add new STACK function sk_is_sorted().
3567 *) Add Delta CRL to the extension code.
3570 *) Various fixes to s3_pkt.c so alerts are sent properly.
3571 [David Holmes <d.holmes@f5.com>]
3573 *) Reduce the chances of duplicate issuer name and serial numbers (in
3574 violation of RFC3280) using the OpenSSL certificate creation utilities.
3575 This is done by creating a random 64 bit value for the initial serial
3576 number when a serial number file is created or when a self signed
3577 certificate is created using 'openssl req -x509'. The initial serial
3578 number file is created using 'openssl x509 -next_serial' in CA.pl
3579 rather than being initialized to 1.
3582 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3584 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3585 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3586 [Joe Orton, Steve Henson]
3588 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3590 [Joe Orton, Steve Henson]
3592 *) Make it possible to have multiple active certificates with the same
3593 subject in the CA index file. This is done only if the keyword
3594 'unique_subject' is set to 'no' in the main CA section (default
3595 if 'CA_default') of the configuration file. The value is saved
3596 with the database itself in a separate index attribute file,
3597 named like the index file with '.attr' appended to the name.
3600 *) X509 verify fixes. Disable broken certificate workarounds when
3601 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3602 keyUsage extension present. Don't accept CRLs with unhandled critical
3603 extensions: since verify currently doesn't process CRL extensions this
3604 rejects a CRL with *any* critical extensions. Add new verify error codes
3608 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3609 A clarification of RFC2560 will require the use of OCTET STRINGs and
3610 some implementations cannot handle the current raw format. Since OpenSSL
3611 copies and compares OCSP nonces as opaque blobs without any attempt at
3612 parsing them this should not create any compatibility issues.
3615 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3616 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3617 this HMAC (and other) operations are several times slower than OpenSSL
3621 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3622 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3624 *) Use the correct content when signing type "other".
3627 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3629 *) Fix various bugs revealed by running the NISCC test suite:
3631 Stop out of bounds reads in the ASN1 code when presented with
3632 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3634 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3636 If verify callback ignores invalid public key errors don't try to check
3637 certificate signature with the NULL public key.
3641 *) New -ignore_err option in ocsp application to stop the server
3642 exiting on the first error in a request.
3645 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3646 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3650 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3651 extra data after the compression methods not only for TLS 1.0
3652 but also for SSL 3.0 (as required by the specification).
3653 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3655 *) Change X509_certificate_type() to mark the key as exported/exportable
3656 when it's 512 *bits* long, not 512 bytes.
3659 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3660 blocks during encryption.
3663 *) Various fixes to base64 BIO and non blocking I/O. On write
3664 flushes were not handled properly if the BIO retried. On read
3665 data was not being buffered properly and had various logic bugs.
3666 This also affects blocking I/O when the data being decoded is a
3670 *) Various S/MIME bugfixes and compatibility changes:
3671 output correct application/pkcs7 MIME type if
3672 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3673 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3674 of files as .eml work). Correctly handle very long lines in MIME
3678 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3680 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3681 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3682 a protocol version number mismatch like a decryption error
3683 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3686 *) Turn on RSA blinding by default in the default implementation
3687 to avoid a timing attack. Applications that don't want it can call
3688 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3689 They would be ill-advised to do so in most cases.
3690 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3692 *) Change RSA blinding code so that it works when the PRNG is not
3693 seeded (in this case, the secret RSA exponent is abused as
3694 an unpredictable seed -- if it is not unpredictable, there
3695 is no point in blinding anyway). Make RSA blinding thread-safe
3696 by remembering the creator's thread ID in rsa->blinding and
3697 having all other threads use local one-time blinding factors
3698 (this requires more computation than sharing rsa->blinding, but
3699 avoids excessive locking; and if an RSA object is not shared
3700 between threads, blinding will still be very fast).
3703 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3704 ENGINE as defaults for all supported algorithms irrespective of
3705 the 'flags' parameter. 'flags' is now honoured, so applications
3706 should make sure they are passing it correctly.
3709 *) Target "mingw" now allows native Windows code to be generated in
3710 the Cygwin environment as well as with the MinGW compiler.
3713 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3715 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3716 via timing by performing a MAC computation even if incorrrect
3717 block cipher padding has been found. This is a countermeasure
3718 against active attacks where the attacker has to distinguish
3719 between bad padding and a MAC verification error. (CVE-2003-0078)
3721 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3722 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3723 Martin Vuagnoux (EPFL, Ilion)]
3725 *) Make the no-err option work as intended. The intention with no-err
3726 is not to have the whole error stack handling routines removed from
3727 libcrypto, it's only intended to remove all the function name and
3728 reason texts, thereby removing some of the footprint that may not
3729 be interesting if those errors aren't displayed anyway.
3731 NOTE: it's still possible for any application or module to have it's
3732 own set of error texts inserted. The routines are there, just not
3733 used by default when no-err is given.
3736 *) Add support for FreeBSD on IA64.
3737 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3739 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3740 Kerberos function mit_des_cbc_cksum(). Before this change,
3741 the value returned by DES_cbc_cksum() was like the one from
3742 mit_des_cbc_cksum(), except the bytes were swapped.
3743 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3745 *) Allow an application to disable the automatic SSL chain building.
3746 Before this a rather primitive chain build was always performed in
3747 ssl3_output_cert_chain(): an application had no way to send the
3748 correct chain if the automatic operation produced an incorrect result.
3750 Now the chain builder is disabled if either:
3752 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3754 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3756 The reasoning behind this is that an application would not want the
3757 auto chain building to take place if extra chain certificates are
3758 present and it might also want a means of sending no additional
3759 certificates (for example the chain has two certificates and the
3763 *) Add the possibility to build without the ENGINE framework.
3764 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3766 *) Under Win32 gmtime() can return NULL: check return value in
3767 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3770 *) DSA routines: under certain error conditions uninitialized BN objects
3771 could be freed. Solution: make sure initialization is performed early
3772 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3773 Nils Larsch <nla@trustcenter.de> via PR#459)
3776 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3777 checked on reconnect on the client side, therefore session resumption
3778 could still fail with a "ssl session id is different" error. This
3779 behaviour is masked when SSL_OP_ALL is used due to
3780 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3781 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3782 followup to PR #377.
3785 *) IA-32 assembler support enhancements: unified ELF targets, support
3786 for SCO/Caldera platforms, fix for Cygwin shared build.
3789 *) Add support for FreeBSD on sparc64. As a consequence, support for
3790 FreeBSD on non-x86 processors is separate from x86 processors on
3791 the config script, much like the NetBSD support.
3792 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3794 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3796 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3799 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3800 code (06) was taken as the first octet of the session ID and the last
3801 octet was ignored consequently. As a result SSLv2 client side session
3802 caching could not have worked due to the session ID mismatch between
3804 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3808 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3809 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3813 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3814 seems that in spite of existing for more than a year, many application
3815 author have done nothing to provide the necessary callbacks, which
3816 means that this particular engine will not work properly anywhere.
3817 This is a very unfortunate situation which forces us, in the name
3818 of usability, to give the hw_ncipher.c a static lock, which is part
3820 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3821 appear in 0.9.8 or later. We EXPECT application authors to have
3822 dealt properly with this when 0.9.8 is released (unless we actually
3823 make such changes in the libcrypto locking code that changes will
3824 have to be made anyway).
3827 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3828 octets have been read, EOF or an error occurs. Without this change
3829 some truncated ASN1 structures will not produce an error.
3832 *) Disable Heimdal support, since it hasn't been fully implemented.
3833 Still give the possibility to force the use of Heimdal, but with
3834 warnings and a request that patches get sent to openssl-dev.
3837 *) Add the VC-CE target, introduce the WINCE sysname, and add
3838 INSTALL.WCE and appropriate conditionals to make it build.
3839 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3841 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3842 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3843 edit numbers of the version.
3844 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3846 *) Introduce safe string copy and catenation functions
3847 (BUF_strlcpy() and BUF_strlcat()).
3848 [Ben Laurie (CHATS) and Richard Levitte]
3850 *) Avoid using fixed-size buffers for one-line DNs.
3851 [Ben Laurie (CHATS)]
3853 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3854 resizing buffers containing secrets, and use where appropriate.
3855 [Ben Laurie (CHATS)]
3857 *) Avoid using fixed size buffers for configuration file location.
3858 [Ben Laurie (CHATS)]
3860 *) Avoid filename truncation for various CA files.
3861 [Ben Laurie (CHATS)]
3863 *) Use sizeof in preference to magic numbers.
3864 [Ben Laurie (CHATS)]
3866 *) Avoid filename truncation in cert requests.
3867 [Ben Laurie (CHATS)]
3869 *) Add assertions to check for (supposedly impossible) buffer
3871 [Ben Laurie (CHATS)]
3873 *) Don't cache truncated DNS entries in the local cache (this could
3874 potentially lead to a spoofing attack).
3875 [Ben Laurie (CHATS)]
3877 *) Fix various buffers to be large enough for hex/decimal
3878 representations in a platform independent manner.
3879 [Ben Laurie (CHATS)]
3881 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3882 resizing buffers containing secrets, and use where appropriate.
3883 [Ben Laurie (CHATS)]
3885 *) Add BIO_indent() to avoid much slightly worrying code to do
3887 [Ben Laurie (CHATS)]
3889 *) Convert sprintf()/BIO_puts() to BIO_printf().
3890 [Ben Laurie (CHATS)]
3892 *) buffer_gets() could terminate with the buffer only half
3894 [Ben Laurie (CHATS)]
3896 *) Add assertions to prevent user-supplied crypto functions from
3897 overflowing internal buffers by having large block sizes, etc.
3898 [Ben Laurie (CHATS)]
3900 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3902 [Ben Laurie (CHATS)]
3904 *) Eliminate unused copy of key in RC4.
3905 [Ben Laurie (CHATS)]
3907 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3908 [Ben Laurie (CHATS)]
3910 *) Fix off-by-one error in EGD path.
3911 [Ben Laurie (CHATS)]
3913 *) If RANDFILE path is too long, ignore instead of truncating.
3914 [Ben Laurie (CHATS)]
3916 *) Eliminate unused and incorrectly sized X.509 structure
3918 [Ben Laurie (CHATS)]
3920 *) Eliminate unused and dangerous function knumber().
3921 [Ben Laurie (CHATS)]
3923 *) Eliminate unused and dangerous structure, KSSL_ERR.
3924 [Ben Laurie (CHATS)]
3926 *) Protect against overlong session ID context length in an encoded
3927 session object. Since these are local, this does not appear to be
3929 [Ben Laurie (CHATS)]
3931 *) Change from security patch (see 0.9.6e below) that did not affect
3932 the 0.9.6 release series:
3934 Remote buffer overflow in SSL3 protocol - an attacker could
3935 supply an oversized master key in Kerberos-enabled versions.
3937 [Ben Laurie (CHATS)]
3939 *) Change the SSL kerb5 codes to match RFC 2712.
3942 *) Make -nameopt work fully for req and add -reqopt switch.
3943 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3945 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3946 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3948 *) Make sure tests can be performed even if the corresponding algorithms
3949 have been removed entirely. This was also the last step to make
3950 OpenSSL compilable with DJGPP under all reasonable conditions.
3951 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3953 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3954 to allow version independent disabling of normally unselected ciphers,
3955 which may be activated as a side-effect of selecting a single cipher.
3957 (E.g., cipher list string "RSA" enables ciphersuites that are left
3958 out of "ALL" because they do not provide symmetric encryption.
3959 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3960 [Lutz Jaenicke, Bodo Moeller]
3962 *) Add appropriate support for separate platform-dependent build
3963 directories. The recommended way to make a platform-dependent
3964 build directory is the following (tested on Linux), maybe with
3967 # Place yourself outside of the OpenSSL source tree. In
3968 # this example, the environment variable OPENSSL_SOURCE
3969 # is assumed to contain the absolute OpenSSL source directory.
3970 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3971 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3972 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3973 mkdir -p `dirname $F`
3974 ln -s $OPENSSL_SOURCE/$F $F
3977 To be absolutely sure not to disturb the source tree, a "make clean"
3978 is a good thing. If it isn't successfull, don't worry about it,
3979 it probably means the source directory is very clean.
3982 *) Make sure any ENGINE control commands make local copies of string
3983 pointers passed to them whenever necessary. Otherwise it is possible
3984 the caller may have overwritten (or deallocated) the original string
3985 data when a later ENGINE operation tries to use the stored values.
3986 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3988 *) Improve diagnostics in file reading and command-line digests.
3989 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3991 *) Add AES modes CFB and OFB to the object database. Correct an
3992 error in AES-CFB decryption.
3995 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3996 allows existing EVP_CIPHER_CTX structures to be reused after
3997 calling EVP_*Final(). This behaviour is used by encryption
3998 BIOs and some applications. This has the side effect that
3999 applications must explicitly clean up cipher contexts with
4000 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4003 *) Check the values of dna and dnb in bn_mul_recursive before calling
4004 bn_mul_comba (a non zero value means the a or b arrays do not contain
4005 n2 elements) and fallback to bn_mul_normal if either is not zero.
4008 *) Fix escaping of non-ASCII characters when using the -subj option
4009 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4012 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4013 form for "surname", serialNumber has no short form.
4014 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4015 therefore remove "mail" short name for "internet 7".
4016 The OID for unique identifiers in X509 certificates is
4017 x500UniqueIdentifier, not uniqueIdentifier.
4018 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4021 *) Add an "init" command to the ENGINE config module and auto initialize
4022 ENGINEs. Without any "init" command the ENGINE will be initialized
4023 after all ctrl commands have been executed on it. If init=1 the
4024 ENGINE is initailized at that point (ctrls before that point are run
4025 on the uninitialized ENGINE and after on the initialized one). If
4026 init=0 then the ENGINE will not be iniatialized at all.
4029 *) Fix the 'app_verify_callback' interface so that the user-defined
4030 argument is actually passed to the callback: In the
4031 SSL_CTX_set_cert_verify_callback() prototype, the callback
4032 declaration has been changed from
4035 int (*cb)(X509_STORE_CTX *,void *);
4036 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4037 i=s->ctx->app_verify_callback(&ctx)
4038 has been changed into
4039 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4041 To update applications using SSL_CTX_set_cert_verify_callback(),
4042 a dummy argument can be added to their callback functions.
4043 [D. K. Smetters <smetters@parc.xerox.com>]
4045 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4046 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4048 *) Add and OPENSSL_LOAD_CONF define which will cause
4049 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4050 This allows older applications to transparently support certain
4051 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4052 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4053 load the config file and OPENSSL_add_all_algorithms_conf() which will
4054 always load it have also been added.
4057 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4058 Adjust NIDs and EVP layer.
4059 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4061 *) Config modules support in openssl utility.
4063 Most commands now load modules from the config file,
4064 though in a few (such as version) this isn't done
4065 because it couldn't be used for anything.
4067 In the case of ca and req the config file used is
4068 the same as the utility itself: that is the -config
4069 command line option can be used to specify an
4073 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4074 use "openssl_conf" if filename is NULL use default openssl config file.
4077 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4078 config section name. Add a new flag to tolerate a missing config file
4079 and move code to CONF_modules_load_file().
4082 *) Support for crypto accelerator cards from Accelerated Encryption
4083 Processing, www.aep.ie. (Use engine 'aep')
4084 The support was copied from 0.9.6c [engine] and adapted/corrected
4085 to work with the new engine framework.
4086 [AEP Inc. and Richard Levitte]
4088 *) Support for SureWare crypto accelerator cards from Baltimore
4089 Technologies. (Use engine 'sureware')
4090 The support was copied from 0.9.6c [engine] and adapted
4091 to work with the new engine framework.
4094 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4095 make the newer ENGINE framework commands for the CHIL engine work.
4096 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4098 *) Make it possible to produce shared libraries on ReliantUNIX.
4099 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4101 *) Add the configuration target debug-linux-ppro.
4102 Make 'openssl rsa' use the general key loading routines
4103 implemented in apps.c, and make those routines able to
4104 handle the key format FORMAT_NETSCAPE and the variant
4106 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4108 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4109 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4111 *) Add -keyform to rsautl, and document -engine.
4112 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4114 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4115 BIO_R_NO_SUCH_FILE error code rather than the generic
4116 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4119 *) Add new functions
4121 ERR_peek_last_error_line
4122 ERR_peek_last_error_line_data.
4123 These are similar to
4126 ERR_peek_error_line_data,
4127 but report on the latest error recorded rather than the first one
4128 still in the error queue.
4129 [Ben Laurie, Bodo Moeller]
4131 *) default_algorithms option in ENGINE config module. This allows things
4133 default_algorithms = ALL
4134 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4137 *) Prelminary ENGINE config module.
4140 *) New experimental application configuration code.
4143 *) Change the AES code to follow the same name structure as all other
4144 symmetric ciphers, and behave the same way. Move everything to
4145 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4146 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4148 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4149 [Ben Laurie and Theo de Raadt]
4151 *) Add option to output public keys in req command.
4152 [Massimiliano Pala madwolf@openca.org]
4154 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4155 (up to about 10% better than before for P-192 and P-224).
4158 *) New functions/macros
4160 SSL_CTX_set_msg_callback(ctx, cb)
4161 SSL_CTX_set_msg_callback_arg(ctx, arg)
4162 SSL_set_msg_callback(ssl, cb)
4163 SSL_set_msg_callback_arg(ssl, arg)
4165 to request calling a callback function
4167 void cb(int write_p, int version, int content_type,
4168 const void *buf, size_t len, SSL *ssl, void *arg)
4170 whenever a protocol message has been completely received
4171 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4172 protocol version according to which the SSL library interprets
4173 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4174 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4175 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4176 specification (change_cipher_spec(20), alert(21), handshake(22)).
4177 'buf' and 'len' point to the actual message, 'ssl' to the
4178 SSL object, and 'arg' is the application-defined value set by
4179 SSL[_CTX]_set_msg_callback_arg().
4181 'openssl s_client' and 'openssl s_server' have new '-msg' options
4182 to enable a callback that displays all protocol messages.
4185 *) Change the shared library support so shared libraries are built as
4186 soon as the corresponding static library is finished, and thereby get
4187 openssl and the test programs linked against the shared library.
4188 This still only happens when the keyword "shard" has been given to
4189 the configuration scripts.
4191 NOTE: shared library support is still an experimental thing, and
4192 backward binary compatibility is still not guaranteed.
4193 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4195 *) Add support for Subject Information Access extension.
4196 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4198 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4199 additional bytes when new memory had to be allocated, not just
4200 when reusing an existing buffer.
4203 *) New command line and configuration option 'utf8' for the req command.
4204 This allows field values to be specified as UTF8 strings.
4207 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4208 runs for the former and machine-readable output for the latter.
4211 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4212 of the e-mail address in the DN (i.e., it will go into a certificate
4213 extension only). The new configuration file option 'email_in_dn = no'
4214 has the same effect.
4215 [Massimiliano Pala madwolf@openca.org]
4217 *) Change all functions with names starting with des_ to be starting
4218 with DES_ instead. Add wrappers that are compatible with libdes,
4219 but are named _ossl_old_des_*. Finally, add macros that map the
4220 des_* symbols to the corresponding _ossl_old_des_* if libdes
4221 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4222 desired, the des_* symbols will be mapped to DES_*, with one
4225 Since we provide two compatibility mappings, the user needs to
4226 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4227 compatibility is desired. The default (i.e., when that macro
4228 isn't defined) is OpenSSL 0.9.6c compatibility.
4230 There are also macros that enable and disable the support of old
4231 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4232 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4233 are defined, the default will apply: to support the old des routines.
4235 In either case, one must include openssl/des.h to get the correct
4236 definitions. Do not try to just include openssl/des_old.h, that
4239 NOTE: This is a major break of an old API into a new one. Software
4240 authors are encouraged to switch to the DES_ style functions. Some
4241 time in the future, des_old.h and the libdes compatibility functions
4242 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4243 default), and then completely removed.
4246 *) Test for certificates which contain unsupported critical extensions.
4247 If such a certificate is found during a verify operation it is
4248 rejected by default: this behaviour can be overridden by either
4249 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4250 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4251 X509_supported_extension() has also been added which returns 1 if a
4252 particular extension is supported.
4255 *) Modify the behaviour of EVP cipher functions in similar way to digests
4256 to retain compatibility with existing code.
4259 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4260 compatibility with existing code. In particular the 'ctx' parameter does
4261 not have to be to be initialized before the call to EVP_DigestInit() and
4262 it is tidied up after a call to EVP_DigestFinal(). New function
4263 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4264 EVP_MD_CTX_copy() changed to not require the destination to be
4265 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4266 requires the destination to be valid.
4268 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4269 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4272 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
projects / openssl.git / blob