5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Support for automatic EC temporary key parameter selection. If enabled
8 the most preferred EC parameters are automatically used instead of
9 hardcoded fixed parameters. Now a server just has to call:
10 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
11 support ECDH and use the most appropriate parameters.
14 *) Enhance and tidy EC curve and point format TLS extension code. Use
15 static structures instead of allocation if default values are used.
16 New ctrls to set curves we wish to support and to retrieve shared curves.
17 Print out shared curves in s_server. New options to s_server and s_client
18 to set list of supported curves.
21 *) New ctrls to retrieve supported signature algorithms and
22 supported curve values as an array of NIDs. Extend openssl utility
23 to print out received values.
26 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
27 between NIDs and the more common NIST names such as "P-256". Enhance
28 ecparam utility and ECC method to recognise the NIST names for curves.
31 *) Enhance SSL/TLS certificate chain handling to support different
32 chains for each certificate instead of one chain in the parent SSL_CTX.
35 *) Support for fixed DH ciphersuite client authentication: where both
36 server and client use DH certificates with common parameters.
39 *) Support for fixed DH ciphersuites: those requiring DH server
43 *) Transparently support X9.42 DH parameters when calling
44 PEM_read_bio_DHparameters. This means existing applications can handle
45 the new parameter format automatically.
48 *) Initial experimental support for X9.42 DH parameter format: mainly
49 to support use of 'q' parameter for RFC5114 parameters.
52 *) Add DH parameters from RFC5114 including test data to dhtest.
55 *) Update fips_test_suite to support multiple command line options. New
56 test to induce all self test errors in sequence and check expected
60 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
61 sign or verify all in one operation.
64 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
65 test programs and fips_test_suite. Includes functionality to parse
66 the minimal script output of fipsalgest.pl directly.
69 *) Add authorisation parameter to FIPS_module_mode_set().
72 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
75 *) Use separate DRBG fields for internal and external flags. New function
76 FIPS_drbg_health_check() to perform on demand health checking. Add
77 generation tests to fips_test_suite with reduced health check interval to
78 demonstrate periodic health checking. Add "nodh" option to
79 fips_test_suite to skip very slow DH test.
82 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
86 *) More extensive health check for DRBG checking many more failure modes.
87 New function FIPS_selftest_drbg_all() to handle every possible DRBG
88 combination: call this in fips_test_suite.
91 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
92 and POST to handle Dual EC cases.
95 *) Add support for canonical generation of DSA parameter 'g'. See
98 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
99 POST to handle HMAC cases.
102 *) Add functions FIPS_module_version() and FIPS_module_version_text()
103 to return numberical and string versions of the FIPS module number.
106 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
107 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
108 outside the validated module in the FIPS capable OpenSSL.
111 *) Minor change to DRBG entropy callback semantics. In some cases
112 there is no mutiple of the block length between min_len and
113 max_len. Allow the callback to return more than max_len bytes
114 of entropy but discard any extra: it is the callback's responsibility
115 to ensure that the extra data discarded does not impact the
116 requested amount of entropy.
119 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
120 information in FIPS186-3, SP800-57 and SP800-131A.
123 *) CCM support via EVP. Interface is very similar to GCM case except we
124 must supply all data in one chunk (i.e. no update, final) and the
125 message length must be supplied if AAD is used. Add algorithm test
129 *) Initial version of POST overhaul. Add POST callback to allow the status
130 of POST to be monitored and/or failures induced. Modify fips_test_suite
131 to use callback. Always run all selftests even if one fails.
134 *) XTS support including algorithm test driver in the fips_gcmtest program.
135 Note: this does increase the maximum key length from 32 to 64 bytes but
136 there should be no binary compatibility issues as existing applications
137 will never use XTS mode.
140 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
141 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
142 performs algorithm blocking for unapproved PRNG types. Also do not
143 set PRNG type in FIPS_mode_set(): leave this to the application.
144 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
145 the standard OpenSSL PRNG: set additional data to a date time vector.
148 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
149 This shouldn't present any incompatibility problems because applications
150 shouldn't be using these directly and any that are will need to rethink
151 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
154 *) Extensive self tests and health checking required by SP800-90 DRBG.
155 Remove strength parameter from FIPS_drbg_instantiate and always
156 instantiate at maximum supported strength.
159 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
162 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
165 *) New function DH_compute_key_padded() to compute a DH key and pad with
166 leading zeroes if needed: this complies with SP800-56A et al.
169 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
170 anything, incomplete, subject to change and largely untested at present.
173 *) Modify fipscanisteronly build option to only build the necessary object
174 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
177 *) Add experimental option FIPSSYMS to give all symbols in
178 fipscanister.o and FIPS or fips prefix. This will avoid
179 conflicts with future versions of OpenSSL. Add perl script
180 util/fipsas.pl to preprocess assembly language source files
181 and rename any affected symbols.
184 *) Add selftest checks and algorithm block of non-fips algorithms in
185 FIPS mode. Remove DES2 from selftests.
188 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
189 return internal method without any ENGINE dependencies. Add new
190 tiny fips sign and verify functions.
193 *) New build option no-ec2m to disable characteristic 2 code.
196 *) New build option "fipscanisteronly". This only builds fipscanister.o
197 and (currently) associated fips utilities. Uses the file Makefile.fips
198 instead of Makefile.org as the prototype.
201 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
202 Update fips_gcmtest to use IV generator.
205 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
206 setting output buffer to NULL. The *Final function must be
207 called although it will not retrieve any additional data. The tag
208 can be set or retrieved with a ctrl. The IV length is by default 12
209 bytes (96 bits) but can be set to an alternative value. If the IV
210 length exceeds the maximum IV length (currently 16 bytes) it cannot be
214 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
215 underlying do_cipher function handles all cipher semantics itself
216 including padding and finalisation. This is useful if (for example)
217 an ENGINE cipher handles block padding itself. The behaviour of
218 do_cipher is subtly changed if this flag is set: the return value
219 is the number of characters written to the output buffer (zero is
220 no longer an error code) or a negative error code. Also if the
221 input buffer is NULL and length 0 finalisation should be performed.
224 *) If a candidate issuer certificate is already part of the constructed
225 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
228 *) Improve forward-security support: add functions
230 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
231 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
233 for use by SSL/TLS servers; the callback function will be called whenever a
234 new session is created, and gets to decide whether the session may be
235 cached to make it resumable (return 0) or not (return 1). (As by the
236 SSL/TLS protocol specifications, the session_id sent by the server will be
237 empty to indicate that the session is not resumable; also, the server will
238 not generate RFC 4507 (RFC 5077) session tickets.)
240 A simple reasonable callback implementation is to return is_forward_secure.
241 This parameter will be set to 1 or 0 depending on the ciphersuite selected
242 by the SSL/TLS server library, indicating whether it can provide forward
244 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
246 *) New function OPENSSL_gmtime_diff to find the difference in days
247 and seconds between two tm structures. This will be used to provide
248 additional functionality for ASN1_TIME.
251 *) Add -trusted_first option which attempts to find certificates in the
252 trusted store even if an untrusted chain is also supplied.
255 *) Initial experimental support for explicitly trusted non-root CAs.
256 OpenSSL still tries to build a complete chain to a root but if an
257 intermediate CA has a trust setting included that is used. The first
258 setting is used: whether to trust or reject.
261 *) New -verify_name option in command line utilities to set verification
265 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
266 Add CMAC pkey methods.
269 *) Experimental regnegotiation in s_server -www mode. If the client
270 browses /reneg connection is renegotiated. If /renegcert it is
271 renegotiated requesting a certificate.
274 *) Add an "external" session cache for debugging purposes to s_server. This
275 should help trace issues which normally are only apparent in deployed
276 multi-process servers.
279 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
280 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
281 BIO_set_cipher() and some obscure PEM functions were changed so they
282 can now return an error. The RAND changes required a change to the
283 RAND_METHOD structure.
286 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
287 a gcc attribute to warn if the result of a function is ignored. This
288 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
289 whose return value is often ignored.
292 Changes between 1.0.1 and 1.0.1a [xx XXX xxxx]
294 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
297 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
299 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
300 STRING form instead of a DigestInfo.
303 *) The format used for MDC2 RSA signatures is inconsistent between EVP
304 and the RSA_sign/RSA_verify functions. This was made more apparent when
305 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
306 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
307 the correct format in RSA_verify so both forms transparently work.
310 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
311 STRING form instead of a DigestInfo.
314 *) Some servers which support TLS 1.0 can choke if we initially indicate
315 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
316 encrypted premaster secret. As a workaround use the maximum pemitted
317 client version in client hello, this should keep such servers happy
318 and still work with previous versions of OpenSSL.
321 *) Add support for TLS/DTLS heartbeats.
322 [Robin Seggelmann <seggelmann@fh-muenster.de>]
324 *) Add support for SCTP.
325 [Robin Seggelmann <seggelmann@fh-muenster.de>]
327 *) Improved PRNG seeding for VOS.
328 [Paul Green <Paul.Green@stratus.com>]
330 *) Extensive assembler packs updates, most notably:
332 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
333 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
334 - x86_64: bit-sliced AES implementation;
335 - ARM: NEON support, contemporary platforms optimizations;
336 - s390x: z196 support;
337 - *: GHASH and GF(2^m) multiplication implementations;
341 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
342 (removal of unnecessary code)
343 [Peter Sylvester <peter.sylvester@edelweb.fr>]
345 *) Add TLS key material exporter from RFC 5705.
348 *) Add DTLS-SRTP negotiation from RFC 5764.
351 *) Add Next Protocol Negotiation,
352 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
353 disabled with a no-npn flag to config or Configure. Code donated
355 [Adam Langley <agl@google.com> and Ben Laurie]
357 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
358 NIST-P256, NIST-P521, with constant-time single point multiplication on
359 typical inputs. Compiler support for the nonstandard type __uint128_t is
360 required to use this (present in gcc 4.4 and later, for 64-bit builds).
361 Code made available under Apache License version 2.0.
363 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
364 line to include this in your build of OpenSSL, and run "make depend" (or
365 "make update"). This enables the following EC_METHODs:
367 EC_GFp_nistp224_method()
368 EC_GFp_nistp256_method()
369 EC_GFp_nistp521_method()
371 EC_GROUP_new_by_curve_name() will automatically use these (while
372 EC_GROUP_new_curve_GFp() currently prefers the more flexible
374 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
376 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
377 all platforms. Move ssize_t definition from e_os.h to the public
378 header file e_os2.h as it now appears in public header file cms.h
381 *) New -sigopt option to the ca, req and x509 utilities. Additional
382 signature parameters can be passed using this option and in
386 *) Add RSA PSS signing function. This will generate and set the
387 appropriate AlgorithmIdentifiers for PSS based on those in the
388 corresponding EVP_MD_CTX structure. No application support yet.
391 *) Support for companion algorithm specific ASN1 signing routines.
392 New function ASN1_item_sign_ctx() signs a pre-initialised
393 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
394 the appropriate parameters.
397 *) Add new algorithm specific ASN1 verification initialisation function
398 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
399 handling will be the same no matter what EVP_PKEY_METHOD is used.
400 Add a PSS handler to support verification of PSS signatures: checked
401 against a number of sample certificates.
404 *) Add signature printing for PSS. Add PSS OIDs.
405 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
407 *) Add algorithm specific signature printing. An individual ASN1 method
408 can now print out signatures instead of the standard hex dump.
410 More complex signatures (e.g. PSS) can print out more meaningful
411 information. Include DSA version that prints out the signature
415 *) Password based recipient info support for CMS library: implementing
419 *) Split password based encryption into PBES2 and PBKDF2 functions. This
420 neatly separates the code into cipher and PBE sections and is required
421 for some algorithms that split PBES2 into separate pieces (such as
425 *) Session-handling fixes:
426 - Fix handling of connections that are resuming with a session ID,
427 but also support Session Tickets.
428 - Fix a bug that suppressed issuing of a new ticket if the client
429 presented a ticket with an expired session.
430 - Try to set the ticket lifetime hint to something reasonable.
431 - Make tickets shorter by excluding irrelevant information.
432 - On the client side, don't ignore renewed tickets.
433 [Adam Langley, Bodo Moeller (Google)]
435 *) Fix PSK session representation.
438 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
440 This work was sponsored by Intel.
443 *) Add GCM support to TLS library. Some custom code is needed to split
444 the IV between the fixed (from PRF) and explicit (from TLS record)
445 portions. This adds all GCM ciphersuites supported by RFC5288 and
446 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
447 add a special AESGCM string for GCM only.
450 *) Expand range of ctrls for AES GCM. Permit setting invocation
451 field on decrypt and retrieval of invocation field only on encrypt.
454 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
455 As required by RFC5289 these ciphersuites cannot be used if for
456 versions of TLS earlier than 1.2.
459 *) For FIPS capable OpenSSL interpret a NULL default public key method
460 as unset and return the appopriate default but do *not* set the default.
461 This means we can return the appopriate method in applications that
462 swicth between FIPS and non-FIPS modes.
465 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
466 ENGINE is used then we cannot handle that in the FIPS module so we
467 keep original code iff non-FIPS operations are allowed.
470 *) Add -attime option to openssl utilities.
471 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
473 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
476 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
477 FIPS EC methods unconditionally for now.
480 *) New build option no-ec2m to disable characteristic 2 code.
483 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
484 all cases can be covered as some introduce binary incompatibilities.
487 *) Redirect RSA operations to FIPS module including keygen,
488 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
491 *) Add similar low level API blocking to ciphers.
494 *) Low level digest APIs are not approved in FIPS mode: any attempt
495 to use these will cause a fatal error. Applications that *really* want
496 to use them can use the private_* version instead.
499 *) Redirect cipher operations to FIPS module for FIPS builds.
502 *) Redirect digest operations to FIPS module for FIPS builds.
505 *) Update build system to add "fips" flag which will link in fipscanister.o
506 for static and shared library builds embedding a signature if needed.
509 *) Output TLS supported curves in preference order instead of numerical
510 order. This is currently hardcoded for the highest order curves first.
511 This should be configurable so applications can judge speed vs strength.
514 *) Add TLS v1.2 server support for client authentication.
517 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
521 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
522 FIPS modules versions.
525 *) Add TLS v1.2 client side support for client authentication. Keep cache
526 of handshake records longer as we don't know the hash algorithm to use
527 until after the certificate request message is received.
530 *) Initial TLS v1.2 client support. Add a default signature algorithms
531 extension including all the algorithms we support. Parse new signature
532 format in client key exchange. Relax some ECC signing restrictions for
533 TLS v1.2 as indicated in RFC5246.
536 *) Add server support for TLS v1.2 signature algorithms extension. Switch
537 to new signature format when needed using client digest preference.
538 All server ciphersuites should now work correctly in TLS v1.2. No client
539 support yet and no support for client certificates.
542 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
543 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
544 ciphersuites. At present only RSA key exchange ciphersuites work with
545 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
546 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
547 and version checking.
550 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
551 with this defined it will not be affected by any changes to ssl internal
552 structures. Add several utility functions to allow openssl application
553 to work with OPENSSL_NO_SSL_INTERN defined.
557 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
559 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
562 *) Permit abbreviated handshakes when renegotiating using the function
563 SSL_renegotiate_abbreviated().
564 [Robin Seggelmann <seggelmann@fh-muenster.de>]
566 *) Add call to ENGINE_register_all_complete() to
567 ENGINE_load_builtin_engines(), so some implementations get used
568 automatically instead of needing explicit application support.
571 *) Add support for TLS key exporter as described in RFC5705.
572 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
574 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
575 a few changes are required:
577 Add SSL_OP_NO_TLSv1_1 flag.
579 Update version checking logic to handle version 1.1.
580 Add explicit IV handling (ported from DTLS code).
581 Add command line options to s_client/s_server.
584 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
586 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
587 in CMS and PKCS7 code. When RSA decryption fails use a random key for
588 content decryption and always return the same error. Note: this attack
589 needs on average 2^20 messages so it only affects automated senders. The
590 old behaviour can be reenabled in the CMS code by setting the
591 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
592 an MMA defence is not necessary.
593 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
594 this issue. (CVE-2012-0884)
597 *) Fix CVE-2011-4619: make sure we really are receiving a
598 client hello before rejecting multiple SGC restarts. Thanks to
599 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
602 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
604 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
605 Thanks to Antonio Martin, Enterprise Secure Access Research and
606 Development, Cisco Systems, Inc. for discovering this bug and
607 preparing a fix. (CVE-2012-0050)
610 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
612 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
613 of the Vaudenay padding oracle attack on CBC mode encryption
614 which enables an efficient plaintext recovery attack against
615 the OpenSSL implementation of DTLS. Their attack exploits timing
616 differences arising during decryption processing. A research
617 paper describing this attack can be found at:
618 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
619 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
620 Security Group at Royal Holloway, University of London
621 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
622 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
623 for preparing the fix. (CVE-2011-4108)
624 [Robin Seggelmann, Michael Tuexen]
626 *) Clear bytes used for block padding of SSL 3.0 records.
628 [Adam Langley (Google)]
630 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
631 Kadianakis <desnacked@gmail.com> for discovering this issue and
632 Adam Langley for preparing the fix. (CVE-2011-4619)
633 [Adam Langley (Google)]
635 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
636 [Andrey Kulikov <amdeich@gmail.com>]
638 *) Prevent malformed RFC3779 data triggering an assertion failure.
639 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
640 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
641 [Rob Austein <sra@hactrn.net>]
643 *) Improved PRNG seeding for VOS.
644 [Paul Green <Paul.Green@stratus.com>]
646 *) Fix ssl_ciph.c set-up race.
647 [Adam Langley (Google)]
649 *) Fix spurious failures in ecdsatest.c.
650 [Emilia Käsper (Google)]
652 *) Fix the BIO_f_buffer() implementation (which was mixing different
653 interpretations of the '..._len' fields).
654 [Adam Langley (Google)]
656 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
657 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
658 threads won't reuse the same blinding coefficients.
660 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
661 lock to call BN_BLINDING_invert_ex, and avoids one use of
662 BN_BLINDING_update for each BN_BLINDING structure (previously,
663 the last update always remained unused).
664 [Emilia Käsper (Google)]
666 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
667 [Bob Buckholz (Google)]
669 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
671 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
672 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
673 [Kaspar Brand <ossl@velox.ch>]
675 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
676 for multi-threaded use of ECDH. (CVE-2011-3210)
677 [Adam Langley (Google)]
679 *) Fix x509_name_ex_d2i memory leak on bad inputs.
682 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
683 signature public key algorithm by using OID xref utilities instead.
684 Before this you could only use some ECC ciphersuites with SHA1 only.
687 *) Add protection against ECDSA timing attacks as mentioned in the paper
688 by Billy Bob Brumley and Nicola Tuveri, see:
690 http://eprint.iacr.org/2011/232.pdf
692 [Billy Bob Brumley and Nicola Tuveri]
694 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
696 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
697 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
699 *) Fix bug in string printing code: if *any* escaping is enabled we must
700 escape the escape character (backslash) or the resulting string is
704 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
706 *) Disable code workaround for ancient and obsolete Netscape browsers
707 and servers: an attacker can use it in a ciphersuite downgrade attack.
708 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
711 *) Fixed J-PAKE implementation error, originally discovered by
712 Sebastien Martini, further info and confirmation from Stefan
713 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
716 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
718 *) Fix extension code to avoid race conditions which can result in a buffer
719 overrun vulnerability: resumed sessions must not be modified as they can
720 be shared by multiple threads. CVE-2010-3864
723 *) Fix WIN32 build system to correctly link an ENGINE directory into
727 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
729 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
731 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
733 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
735 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
736 context. The operation can be customised via the ctrl mechanism in
737 case ENGINEs want to include additional functionality.
740 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
743 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
744 output hashes compatible with older versions of OpenSSL.
745 [Willy Weisz <weisz@vcpc.univie.ac.at>]
747 *) Fix compression algorithm handling: if resuming a session use the
748 compression algorithm of the resumed session instead of determining
749 it from client hello again. Don't allow server to change algorithm.
752 *) Add load_crls() function to apps tidying load_certs() too. Add option
753 to verify utility to allow additional CRLs to be included.
756 *) Update OCSP request code to permit adding custom headers to the request:
757 some responders need this.
760 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
762 [Julia Lawall <julia@diku.dk>]
764 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
765 needlessly dereferenced structures, used obsolete functions and
766 didn't handle all updated verify codes correctly.
769 *) Disable MD2 in the default configuration.
772 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
773 indicate the initial BIO being pushed or popped. This makes it possible
774 to determine whether the BIO is the one explicitly called or as a result
775 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
776 it handles reference counts correctly and doesn't zero out the I/O bio
777 when it is not being explicitly popped. WARNING: applications which
778 included workarounds for the old buggy behaviour will need to be modified
779 or they could free up already freed BIOs.
782 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
783 renaming to all platforms (within the 0.9.8 branch, this was
784 done conditionally on Netware platforms to avoid a name clash).
785 [Guenter <lists@gknw.net>]
787 *) Add ECDHE and PSK support to DTLS.
788 [Michael Tuexen <tuexen@fh-muenster.de>]
790 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
794 *) Add "missing" function EVP_MD_flags() (without this the only way to
795 retrieve a digest flags is by accessing the structure directly. Update
796 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
797 or cipher is registered as in the "from" argument. Print out all
798 registered digests in the dgst usage message instead of manually
799 attempting to work them out.
802 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
803 this allows the use of compression and extensions. Change default cipher
804 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
805 by default unless an application cipher string requests it.
808 *) Alter match criteria in PKCS12_parse(). It used to try to use local
809 key ids to find matching certificates and keys but some PKCS#12 files
810 don't follow the (somewhat unwritten) rules and this strategy fails.
811 Now just gather all certificates together and the first private key
812 then look for the first certificate that matches the key.
815 *) Support use of registered digest and cipher names for dgst and cipher
816 commands instead of having to add each one as a special case. So now
823 openssl dgst -sha256 foo
825 and this works for ENGINE based algorithms too.
829 *) Update Gost ENGINE to support parameter files.
830 [Victor B. Wagner <vitus@cryptocom.ru>]
832 *) Support GeneralizedTime in ca utility.
833 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
835 *) Enhance the hash format used for certificate directory links. The new
836 form uses the canonical encoding (meaning equivalent names will work
837 even if they aren't identical) and uses SHA1 instead of MD5. This form
838 is incompatible with the older format and as a result c_rehash should
839 be used to rebuild symbolic links.
842 *) Make PKCS#8 the default write format for private keys, replacing the
843 traditional format. This form is standardised, more secure and doesn't
844 include an implicit MD5 dependency.
847 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
848 committed to OpenSSL should pass this lot as a minimum.
851 *) Add session ticket override functionality for use by EAP-FAST.
852 [Jouni Malinen <j@w1.fi>]
854 *) Modify HMAC functions to return a value. Since these can be implemented
855 in an ENGINE errors can occur.
858 *) Type-checked OBJ_bsearch_ex.
861 *) Type-checked OBJ_bsearch. Also some constification necessitated
862 by type-checking. Still to come: TXT_DB, bsearch(?),
863 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
867 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
868 seconds to a tm structure directly, instead of going through OS
869 specific date routines. This avoids any issues with OS routines such
870 as the year 2038 bug. New *_adj() functions for ASN1 time structures
871 and X509_time_adj_ex() to cover the extended range. The existing
872 X509_time_adj() is still usable and will no longer have any date issues.
875 *) Delta CRL support. New use deltas option which will attempt to locate
876 and search any appropriate delta CRLs available.
878 This work was sponsored by Google.
881 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
882 code and add additional score elements. Validate alternate CRL paths
883 as part of the CRL checking and indicate a new error "CRL path validation
884 error" in this case. Applications wanting additional details can use
885 the verify callback and check the new "parent" field. If this is not
886 NULL CRL path validation is taking place. Existing applications wont
887 see this because it requires extended CRL support which is off by
890 This work was sponsored by Google.
893 *) Support for freshest CRL extension.
895 This work was sponsored by Google.
898 *) Initial indirect CRL support. Currently only supported in the CRLs
899 passed directly and not via lookup. Process certificate issuer
900 CRL entry extension and lookup CRL entries by bother issuer name
901 and serial number. Check and process CRL issuer entry in IDP extension.
903 This work was sponsored by Google.
906 *) Add support for distinct certificate and CRL paths. The CRL issuer
907 certificate is validated separately in this case. Only enabled if
908 an extended CRL support flag is set: this flag will enable additional
909 CRL functionality in future.
911 This work was sponsored by Google.
914 *) Add support for policy mappings extension.
916 This work was sponsored by Google.
919 *) Fixes to pathlength constraint, self issued certificate handling,
920 policy processing to align with RFC3280 and PKITS tests.
922 This work was sponsored by Google.
925 *) Support for name constraints certificate extension. DN, email, DNS
926 and URI types are currently supported.
928 This work was sponsored by Google.
931 *) To cater for systems that provide a pointer-based thread ID rather
932 than numeric, deprecate the current numeric thread ID mechanism and
933 replace it with a structure and associated callback type. This
934 mechanism allows a numeric "hash" to be extracted from a thread ID in
935 either case, and on platforms where pointers are larger than 'long',
936 mixing is done to help ensure the numeric 'hash' is usable even if it
937 can't be guaranteed unique. The default mechanism is to use "&errno"
938 as a pointer-based thread ID to distinguish between threads.
940 Applications that want to provide their own thread IDs should now use
941 CRYPTO_THREADID_set_callback() to register a callback that will call
942 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
944 Note that ERR_remove_state() is now deprecated, because it is tied
945 to the assumption that thread IDs are numeric. ERR_remove_state(0)
946 to free the current thread's error state should be replaced by
947 ERR_remove_thread_state(NULL).
949 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
950 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
951 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
952 application was previously providing a numeric thread callback that
953 was inappropriate for distinguishing threads, then uniqueness might
954 have been obtained with &errno that happened immediately in the
955 intermediate development versions of OpenSSL; this is no longer the
956 case, the numeric thread callback will now override the automatic use
958 [Geoff Thorpe, with help from Bodo Moeller]
960 *) Initial support for different CRL issuing certificates. This covers a
961 simple case where the self issued certificates in the chain exist and
962 the real CRL issuer is higher in the existing chain.
964 This work was sponsored by Google.
967 *) Removed effectively defunct crypto/store from the build.
970 *) Revamp of STACK to provide stronger type-checking. Still to come:
971 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
972 ASN1_STRING, CONF_VALUE.
975 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
976 RAM on SSL connections. This option can save about 34k per idle SSL.
979 *) Revamp of LHASH to provide stronger type-checking. Still to come:
980 STACK, TXT_DB, bsearch, qsort.
983 *) Initial support for Cryptographic Message Syntax (aka CMS) based
984 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
985 support for data, signedData, compressedData, digestedData and
986 encryptedData, envelopedData types included. Scripts to check against
987 RFC4134 examples draft and interop and consistency checks of many
988 content types and variants.
991 *) Add options to enc utility to support use of zlib compression BIO.
994 *) Extend mk1mf to support importing of options and assembly language
995 files from Configure script, currently only included in VC-WIN32.
996 The assembly language rules can now optionally generate the source
997 files from the associated perl scripts.
1000 *) Implement remaining functionality needed to support GOST ciphersuites.
1001 Interop testing has been performed using CryptoPro implementations.
1002 [Victor B. Wagner <vitus@cryptocom.ru>]
1004 *) s390x assembler pack.
1007 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
1011 *) Implement Opaque PRF Input TLS extension as specified in
1012 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
1013 official specification yet and no extension type assignment by
1014 IANA exists, this extension (for now) will have to be explicitly
1015 enabled when building OpenSSL by providing the extension number
1016 to use. For example, specify an option
1018 -DTLSEXT_TYPE_opaque_prf_input=0x9527
1020 to the "config" or "Configure" script to enable the extension,
1021 assuming extension number 0x9527 (which is a completely arbitrary
1022 and unofficial assignment based on the MD5 hash of the Internet
1023 Draft). Note that by doing so, you potentially lose
1024 interoperability with other TLS implementations since these might
1025 be using the same extension number for other purposes.
1027 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1028 opaque PRF input value to use in the handshake. This will create
1029 an interal copy of the length-'len' string at 'src', and will
1030 return non-zero for success.
1032 To get more control and flexibility, provide a callback function
1035 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1036 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1040 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1043 Callback function 'cb' will be called in handshakes, and is
1044 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1045 Argument 'arg' is for application purposes (the value as given to
1046 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1047 be provided to the callback function). The callback function
1048 has to return non-zero to report success: usually 1 to use opaque
1049 PRF input just if possible, or 2 to enforce use of the opaque PRF
1050 input. In the latter case, the library will abort the handshake
1051 if opaque PRF input is not successfully negotiated.
1053 Arguments 'peerinput' and 'len' given to the callback function
1054 will always be NULL and 0 in the case of a client. A server will
1055 see the client's opaque PRF input through these variables if
1056 available (NULL and 0 otherwise). Note that if the server
1057 provides an opaque PRF input, the length must be the same as the
1058 length of the client's opaque PRF input.
1060 Note that the callback function will only be called when creating
1061 a new session (session resumption can resume whatever was
1062 previously negotiated), and will not be called in SSL 2.0
1063 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1064 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1065 for applications that need to enforce opaque PRF input.
1069 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1072 [Victor B. Wagner <vitus@cryptocom.ru>]
1074 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1075 RFC4507bis. The encrypted ticket format is an encrypted encoded
1076 SSL_SESSION structure, that way new session features are automatically
1079 If a client application caches session in an SSL_SESSION structure
1080 support is transparent because tickets are now stored in the encoded
1083 The SSL_CTX structure automatically generates keys for ticket
1084 protection in servers so again support should be possible
1085 with no application modification.
1087 If a client or server wishes to disable RFC4507 support then the option
1088 SSL_OP_NO_TICKET can be set.
1090 Add a TLS extension debugging callback to allow the contents of any client
1091 or server extensions to be examined.
1093 This work was sponsored by Google.
1096 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1097 OpenSSL should now compile cleanly on gcc 4.2
1098 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1100 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1101 support including streaming MAC support: this is required for GOST
1102 ciphersuite support.
1103 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1105 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1106 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1107 to output in BER and PEM format.
1110 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1111 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1112 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1113 ENGINE support for HMAC keys which are unextractable. New -mac and
1114 -macopt options to dgst utility.
1117 *) New option -sigopt to dgst utility. Update dgst to use
1118 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1119 alternative signing paramaters such as X9.31 or PSS in the dgst
1123 *) Change ssl_cipher_apply_rule(), the internal function that does
1124 the work each time a ciphersuite string requests enabling
1125 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1126 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1127 the order of disabled ciphersuites such that those ciphersuites
1128 that most recently went from enabled to disabled not only stay
1129 in order with respect to each other, but also have higher priority
1130 than other disabled ciphersuites the next time ciphersuites are
1133 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1134 the same ciphersuites as with "HIGH" alone, but in a specific
1135 order where the PSK ciphersuites come first (since they are the
1136 most recently disabled ciphersuites when "HIGH" is parsed).
1138 Also, change ssl_create_cipher_list() (using this new
1139 funcionality) such that between otherwise identical
1140 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1144 *) Change ssl_create_cipher_list() so that it automatically
1145 arranges the ciphersuites in reasonable order before starting
1146 to process the rule string. Thus, the definition for "DEFAULT"
1147 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1148 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1149 This makes it much easier to arrive at a reasonable default order
1150 in applications for which anonymous ciphers are OK (meaning
1151 that you can't actually use DEFAULT).
1152 [Bodo Moeller; suggested by Victor Duchovni]
1154 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1155 processing) into multiple integers instead of setting
1156 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1157 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1158 (These masks as well as the individual bit definitions are hidden
1159 away into the non-exported interface ssl/ssl_locl.h, so this
1160 change to the definition of the SSL_CIPHER structure shouldn't
1161 affect applications.) This give us more bits for each of these
1162 categories, so there is no longer a need to coagulate AES128 and
1163 AES256 into a single algorithm bit, and to coagulate Camellia128
1164 and Camellia256 into a single algorithm bit, which has led to all
1167 Thus, among other things, the kludge introduced in 0.9.7m and
1168 0.9.8e for masking out AES256 independently of AES128 or masking
1169 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1171 With the change, we also introduce new ciphersuite aliases that
1172 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1176 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1177 Use the leftmost N bytes of the signature input if the input is
1178 larger than the prime q (with N being the size in bytes of q).
1181 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1182 it yet and it is largely untested.
1185 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1188 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1189 some compilers (gcc 4.2 and later) reject their use. Safestack is
1190 reimplemented. Update ASN1 to avoid use of legacy functions.
1193 *) Win32/64 targets are linked with Winsock2.
1196 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1197 to external functions. This can be used to increase CRL handling
1198 efficiency especially when CRLs are very large by (for example) storing
1199 the CRL revoked certificates in a database.
1202 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1203 new CRLs added to a directory can be used. New command line option
1204 -verify_return_error to s_client and s_server. This causes real errors
1205 to be returned by the verify callback instead of carrying on no matter
1206 what. This reflects the way a "real world" verify callback would behave.
1209 *) GOST engine, supporting several GOST algorithms and public key formats.
1210 Kindly donated by Cryptocom.
1213 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1214 partitioned by DP are handled but no indirect CRL or reason partitioning
1215 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1216 selected via a scoring technique which handles IDP and AKID in CRLs.
1219 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1220 will ultimately be used for all verify operations: this will remove the
1221 X509_STORE dependency on certificate verification and allow alternative
1222 lookup methods. X509_STORE based implementations of these two callbacks.
1225 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1226 Modify get_crl() to find a valid (unexpired) CRL if possible.
1229 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1230 this would be called X509_CRL_cmp() but that name is already used by
1231 a function that just compares CRL issuer names. Cache several CRL
1232 extensions in X509_CRL structure and cache CRLDP in X509.
1235 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1236 this maps equivalent X509_NAME structures into a consistent structure.
1237 Name comparison can then be performed rapidly using memcmp().
1240 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1244 *) Allow digests to supply their own micalg string for S/MIME type using
1245 the ctrl EVP_MD_CTRL_MICALG.
1248 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1249 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1250 ctrl. It can then customise the structure before and/or after signing
1254 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1255 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1256 to free up any added signature OIDs.
1259 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1260 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1261 digest and cipher tables. New options added to openssl utility:
1262 list-message-digest-algorithms and list-cipher-algorithms.
1265 *) Change the array representation of binary polynomials: the list
1266 of degrees of non-zero coefficients is now terminated with -1.
1267 Previously it was terminated with 0, which was also part of the
1268 value; thus, the array representation was not applicable to
1269 polynomials where t^0 has coefficient zero. This change makes
1270 the array representation useful in a more general context.
1273 *) Various modifications and fixes to SSL/TLS cipher string
1274 handling. For ECC, the code now distinguishes between fixed ECDH
1275 with RSA certificates on the one hand and with ECDSA certificates
1276 on the other hand, since these are separate ciphersuites. The
1277 unused code for Fortezza ciphersuites has been removed.
1279 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1280 (not "ECDHE"). For consistency with the code for DH
1281 certificates, use of ECDH certificates is now considered ECDH
1282 authentication, not RSA or ECDSA authentication (the latter is
1283 merely the CA's signing algorithm and not actively used in the
1286 The temporary ciphersuite alias "ECCdraft" is no longer
1287 available, and ECC ciphersuites are no longer excluded from "ALL"
1288 and "DEFAULT". The following aliases now exist for RFC 4492
1289 ciphersuites, most of these by analogy with the DH case:
1291 kECDHr - ECDH cert, signed with RSA
1292 kECDHe - ECDH cert, signed with ECDSA
1293 kECDH - ECDH cert (signed with either RSA or ECDSA)
1294 kEECDH - ephemeral ECDH
1295 ECDH - ECDH cert or ephemeral ECDH
1301 AECDH - anonymous ECDH
1302 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1306 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1307 Use correct micalg parameters depending on digest(s) in signed message.
1310 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1311 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1314 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1315 an engine to register a method. Add ENGINE lookups for methods and
1316 functional reference processing.
1319 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1320 EVP_{Sign,Verify}* which allow an application to customise the signature
1324 *) New -resign option to smime utility. This adds one or more signers
1325 to an existing PKCS#7 signedData structure. Also -md option to use an
1326 alternative message digest algorithm for signing.
1329 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1330 create PKCS7 structures containing multiple signers. Update smime
1331 application to support multiple signers.
1334 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1338 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1339 Reorganize PBE internals to lookup from a static table using NIDs,
1340 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1341 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1342 PRF which will be automatically used with PBES2.
1345 *) Replace the algorithm specific calls to generate keys in "req" with the
1349 *) Update PKCS#7 enveloped data routines to use new API. This is now
1350 supported by any public key method supporting the encrypt operation. A
1351 ctrl is added to allow the public key algorithm to examine or modify
1352 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1356 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1357 a default digest type to use. In most cases this will be SHA1 but some
1358 algorithms (such as GOST) need to specify an alternative digest. The
1359 return value indicates how strong the prefernce is 1 means optional and
1360 2 is mandatory (that is it is the only supported type). Modify
1361 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1362 use the default md. Update openssl utilities to use the default digest
1363 type for signing if it is not explicitly indicated.
1366 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1367 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1368 signing method from the key type. This effectively removes the link
1369 between digests and public key types.
1372 *) Add an OID cross reference table and utility functions. Its purpose is to
1373 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1374 rsaEncryption. This will allow some of the algorithm specific hackery
1375 needed to use the correct OID to be removed.
1378 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1379 structures for PKCS7_sign(). They are now set up by the relevant public
1383 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1386 *) Add support for key derivation (agreement) in the API, DH method and
1390 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1391 public and private key formats. As a side effect these add additional
1392 command line functionality not previously available: DSA signatures can be
1393 generated and verified using pkeyutl and DH key support and generation in
1398 [Oliver Tappe <zooey@hirschkaefer.de>]
1400 *) New make target "install_html_docs" installs HTML renditions of the
1402 [Oliver Tappe <zooey@hirschkaefer.de>]
1404 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1405 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1406 support key and parameter generation and add initial key generation
1407 functionality for RSA.
1410 *) Add functions for main EVP_PKEY_method operations. The undocumented
1411 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1412 EVP_PKEY_{encrypt,decrypt}_old.
1415 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1416 key API, doesn't do much yet.
1419 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1420 public key algorithms. New option to openssl utility:
1421 "list-public-key-algorithms" to print out info.
1424 *) Implement the Supported Elliptic Curves Extension for
1425 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1428 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1429 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1432 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1433 utilities such as rsa, dsa, dsaparam etc except they process any key
1437 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1438 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1439 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1443 *) Initial support for pluggable public key ASN1.
1444 De-spaghettify the public key ASN1 handling. Move public and private
1445 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1446 algorithm specific handling to a single module within the relevant
1447 algorithm directory. Add functions to allow (near) opaque processing
1448 of public and private key structures.
1451 *) Implement the Supported Point Formats Extension for
1452 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1455 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1456 for the psk identity [hint] and the psk callback functions to the
1457 SSL_SESSION, SSL and SSL_CTX structure.
1460 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1464 SSL_CTX_use_psk_identity_hint
1465 SSL_get_psk_identity_hint
1466 SSL_get_psk_identity
1467 SSL_use_psk_identity_hint
1469 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1471 *) Add RFC 3161 compliant time stamp request creation, response generation
1472 and response verification functionality.
1473 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1475 *) Add initial support for TLS extensions, specifically for the server_name
1476 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1477 have new members for a host name. The SSL data structure has an
1478 additional member SSL_CTX *initial_ctx so that new sessions can be
1479 stored in that context to allow for session resumption, even after the
1480 SSL has been switched to a new SSL_CTX in reaction to a client's
1481 server_name extension.
1483 New functions (subject to change):
1485 SSL_get_servername()
1486 SSL_get_servername_type()
1489 New CTRL codes and macros (subject to change):
1491 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1492 - SSL_CTX_set_tlsext_servername_callback()
1493 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1494 - SSL_CTX_set_tlsext_servername_arg()
1495 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1497 openssl s_client has a new '-servername ...' option.
1499 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1500 '-key2 ...', '-servername_fatal' (subject to change). This allows
1501 testing the HostName extension for a specific single host name ('-cert'
1502 and '-key' remain fallbacks for handshakes without HostName
1503 negotiation). If the unrecogninzed_name alert has to be sent, this by
1504 default is a warning; it becomes fatal with the '-servername_fatal'
1507 [Peter Sylvester, Remy Allais, Christophe Renou]
1509 *) Whirlpool hash implementation is added.
1512 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1513 bn(64,32). Because of instruction set limitations it doesn't have
1514 any negative impact on performance. This was done mostly in order
1515 to make it possible to share assembler modules, such as bn_mul_mont
1516 implementations, between 32- and 64-bit builds without hassle.
1519 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1520 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1524 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1525 dedicated Montgomery multiplication procedure, is introduced.
1526 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1527 "64-bit" performance on certain 32-bit targets.
1530 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1531 in SSL structures. New SSL ctrl to set maximum send fragment size.
1532 Save memory by seeting the I/O buffer sizes dynamically instead of
1533 using the maximum available value.
1536 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1537 in addition to the text details.
1540 *) Very, very preliminary EXPERIMENTAL support for printing of general
1541 ASN1 structures. This currently produces rather ugly output and doesn't
1542 handle several customised structures at all.
1545 *) Integrated support for PVK file format and some related formats such
1546 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1547 these in the 'rsa' and 'dsa' utilities.
1550 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1553 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1554 place for the (very old) "NETSCAPE" format certificates which are now
1555 handled using new ASN1 code equivalents.
1558 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1559 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1560 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1563 *) Modify CRL distribution points extension code to print out previously
1564 unsupported fields. Enhance extension setting code to allow setting of
1568 *) Add print and set support for Issuing Distribution Point CRL extension.
1571 *) Change 'Configure' script to enable Camellia by default.
1574 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
1576 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1577 Thanks to Antonio Martin, Enterprise Secure Access Research and
1578 Development, Cisco Systems, Inc. for discovering this bug and
1579 preparing a fix. (CVE-2012-0050)
1582 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1584 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1585 of the Vaudenay padding oracle attack on CBC mode encryption
1586 which enables an efficient plaintext recovery attack against
1587 the OpenSSL implementation of DTLS. Their attack exploits timing
1588 differences arising during decryption processing. A research
1589 paper describing this attack can be found at:
1590 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1591 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1592 Security Group at Royal Holloway, University of London
1593 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1594 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1595 for preparing the fix. (CVE-2011-4108)
1596 [Robin Seggelmann, Michael Tuexen]
1598 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1599 [Ben Laurie, Kasper <ekasper@google.com>]
1601 *) Clear bytes used for block padding of SSL 3.0 records.
1603 [Adam Langley (Google)]
1605 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1606 Kadianakis <desnacked@gmail.com> for discovering this issue and
1607 Adam Langley for preparing the fix. (CVE-2011-4619)
1608 [Adam Langley (Google)]
1610 *) Prevent malformed RFC3779 data triggering an assertion failure.
1611 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1612 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1613 [Rob Austein <sra@hactrn.net>]
1615 *) Fix ssl_ciph.c set-up race.
1616 [Adam Langley (Google)]
1618 *) Fix spurious failures in ecdsatest.c.
1619 [Emilia Käsper (Google)]
1621 *) Fix the BIO_f_buffer() implementation (which was mixing different
1622 interpretations of the '..._len' fields).
1623 [Adam Langley (Google)]
1625 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1626 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1627 threads won't reuse the same blinding coefficients.
1629 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1630 lock to call BN_BLINDING_invert_ex, and avoids one use of
1631 BN_BLINDING_update for each BN_BLINDING structure (previously,
1632 the last update always remained unused).
1633 [Emilia Käsper (Google)]
1635 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1636 for multi-threaded use of ECDH.
1637 [Adam Langley (Google)]
1639 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1642 *) Add protection against ECDSA timing attacks as mentioned in the paper
1643 by Billy Bob Brumley and Nicola Tuveri, see:
1645 http://eprint.iacr.org/2011/232.pdf
1647 [Billy Bob Brumley and Nicola Tuveri]
1649 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1651 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1652 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1654 *) Fix bug in string printing code: if *any* escaping is enabled we must
1655 escape the escape character (backslash) or the resulting string is
1659 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1661 *) Disable code workaround for ancient and obsolete Netscape browsers
1662 and servers: an attacker can use it in a ciphersuite downgrade attack.
1663 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1666 *) Fixed J-PAKE implementation error, originally discovered by
1667 Sebastien Martini, further info and confirmation from Stefan
1668 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1671 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1673 *) Fix extension code to avoid race conditions which can result in a buffer
1674 overrun vulnerability: resumed sessions must not be modified as they can
1675 be shared by multiple threads. CVE-2010-3864
1678 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1681 *) Don't reencode certificate when calculating signature: cache and use
1682 the original encoding instead. This makes signature verification of
1683 some broken encodings work correctly.
1686 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1687 is also one of the inputs.
1688 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1690 *) Don't repeatedly append PBE algorithms to table if they already exist.
1691 Sort table on each new add. This effectively makes the table read only
1692 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1696 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1698 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1701 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1702 access or freeing data twice (CVE-2010-0742)
1703 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1705 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1706 common in certificates and some applications which only call
1707 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1711 Reduce copying into .apps and .test in makevms.com
1712 Don't try to use blank CA certificate in CA.com
1713 Allow use of C files from original directories in maketests.com
1714 [Steven M. Schweda" <sms@antinode.info>]
1716 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1718 *) When rejecting SSL/TLS records due to an incorrect version number, never
1719 update s->server with a new major version number. As of
1720 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1721 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1722 the previous behavior could result in a read attempt at NULL when
1723 receiving specific incorrect SSL/TLS records once record payload
1724 protection is active. (CVE-2010-0740)
1725 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1727 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1728 could be crashed if the relevant tables were not present (e.g. chrooted).
1729 [Tomas Hoger <thoger@redhat.com>]
1731 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1733 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1734 [Martin Olsson, Neel Mehta]
1736 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1737 accommodate for stack sorting, always a write lock!).
1740 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1741 excessive delays in the RAND_poll(): over a minute. As a workaround
1742 include a time check in the inner Heap32Next loop too.
1745 *) The code that handled flushing of data in SSL/TLS originally used the
1746 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1747 the problem outlined in PR#1949. The fix suggested there however can
1748 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1749 of Apache). So instead simplify the code to flush unconditionally.
1750 This should be fine since flushing with no data to flush is a no op.
1753 *) Handle TLS versions 2.0 and later properly and correctly use the
1754 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1755 off ancient servers have a habit of sticking around for a while...
1758 *) Modify compression code so it frees up structures without using the
1759 ex_data callbacks. This works around a problem where some applications
1760 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1761 restarting) then use compression (e.g. SSL with compression) later.
1762 This results in significant per-connection memory leaks and
1763 has caused some security issues including CVE-2008-1678 and
1767 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1768 change when encrypting or decrypting.
1771 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1772 connect and renegotiate with servers which do not support RI.
1773 Until RI is more widely deployed this option is enabled by default.
1776 *) Add "missing" ssl ctrls to clear options and mode.
1779 *) If client attempts to renegotiate and doesn't support RI respond with
1780 a no_renegotiation alert as required by RFC5746. Some renegotiating
1781 TLS clients will continue a connection gracefully when they receive
1782 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1783 waiting for a server hello which it will never receive. Now we treat a
1784 received no_renegotiation alert as a fatal error. This is because
1785 applications requesting a renegotiation might well expect it to succeed
1786 and would have no code in place to handle the server denying it so the
1787 only safe thing to do is to terminate the connection.
1790 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1791 peer supports secure renegotiation and 0 otherwise. Print out peer
1792 renegotiation support in s_client/s_server.
1795 *) Replace the highly broken and deprecated SPKAC certification method with
1796 the updated NID creation version. This should correctly handle UTF8.
1799 *) Implement RFC5746. Re-enable renegotiation but require the extension
1800 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1801 turns out to be a bad idea. It has been replaced by
1802 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1803 SSL_CTX_set_options(). This is really not recommended unless you
1804 know what you are doing.
1805 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1807 *) Fixes to stateless session resumption handling. Use initial_ctx when
1808 issuing and attempting to decrypt tickets in case it has changed during
1809 servername handling. Use a non-zero length session ID when attempting
1810 stateless session resumption: this makes it possible to determine if
1811 a resumption has occurred immediately after receiving server hello
1812 (several places in OpenSSL subtly assume this) instead of later in
1816 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1817 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1818 fixes for a few places where the return code is not checked
1820 [Julia Lawall <julia@diku.dk>]
1822 *) Add --strict-warnings option to Configure script to include devteam
1823 warnings in other configurations.
1826 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1827 makes it possible to install openssl libraries in locations which
1828 have names other than "lib", for example "/usr/lib64" which some
1830 [Steve Henson, based on patch from Jeremy Utley]
1832 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1833 X690 8.9.12 and can produce some misleading textual output of OIDs.
1834 [Steve Henson, reported by Dan Kaminsky]
1836 *) Delete MD2 from algorithm tables. This follows the recommendation in
1837 several standards that it is not used in new applications due to
1838 several cryptographic weaknesses. For binary compatibility reasons
1839 the MD2 API is still compiled in by default.
1842 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1846 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1847 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1849 [Guenter <lists@gknw.net>]
1851 *) Fix the server certificate chain building code to use X509_verify_cert(),
1852 it used to have an ad-hoc builder which was unable to cope with anything
1853 other than a simple chain.
1854 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1856 *) Don't check self signed certificate signatures in X509_verify_cert()
1857 by default (a flag can override this): it just wastes time without
1858 adding any security. As a useful side effect self signed root CAs
1859 with non-FIPS digests are now usable in FIPS mode.
1862 *) In dtls1_process_out_of_seq_message() the check if the current message
1863 is already buffered was missing. For every new message was memory
1864 allocated, allowing an attacker to perform an denial of service attack
1865 with sending out of seq handshake messages until there is no memory
1866 left. Additionally every future messege was buffered, even if the
1867 sequence number made no sense and would be part of another handshake.
1868 So only messages with sequence numbers less than 10 in advance will be
1869 buffered. (CVE-2009-1378)
1870 [Robin Seggelmann, discovered by Daniel Mentz]
1872 *) Records are buffered if they arrive with a future epoch to be
1873 processed after finishing the corresponding handshake. There is
1874 currently no limitation to this buffer allowing an attacker to perform
1875 a DOS attack with sending records with future epochs until there is no
1876 memory left. This patch adds the pqueue_size() function to detemine
1877 the size of a buffer and limits the record buffer to 100 entries.
1879 [Robin Seggelmann, discovered by Daniel Mentz]
1881 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1882 parent structure is freed. (CVE-2009-1379)
1885 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1886 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1889 [Ilya O. <vrghost@gmail.com>]
1891 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1893 *) Disable renegotiation completely - this fixes a severe security
1894 problem (CVE-2009-3555) at the cost of breaking all
1895 renegotiation. Renegotiation can be re-enabled by setting
1896 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1897 run-time. This is really not recommended unless you know what
1901 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1903 *) Don't set val to NULL when freeing up structures, it is freed up by
1904 underlying code. If sizeof(void *) > sizeof(long) this can result in
1905 zeroing past the valid field. (CVE-2009-0789)
1906 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1908 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1909 checked correctly. This would allow some invalid signed attributes to
1910 appear to verify correctly. (CVE-2009-0591)
1911 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1913 *) Reject UniversalString and BMPString types with invalid lengths. This
1914 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1915 a legal length. (CVE-2009-0590)
1918 *) Set S/MIME signing as the default purpose rather than setting it
1919 unconditionally. This allows applications to override it at the store
1923 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1924 to handle some structures.
1927 *) Improve efficiency of mem_gets: don't search whole buffer each time
1929 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1931 *) New -hex option for openssl rand.
1934 *) Print out UTF8String and NumericString when parsing ASN1.
1937 *) Support NumericString type for name components.
1940 *) Allow CC in the environment to override the automatically chosen
1941 compiler. Note that nothing is done to ensure flags work with the
1945 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1947 *) Properly check EVP_VerifyFinal() and similar return values
1949 [Ben Laurie, Bodo Moeller, Google Security Team]
1951 *) Enable TLS extensions by default.
1954 *) Allow the CHIL engine to be loaded, whether the application is
1955 multithreaded or not. (This does not release the developer from the
1956 obligation to set up the dynamic locking callbacks.)
1957 [Sander Temme <sander@temme.net>]
1959 *) Use correct exit code if there is an error in dgst command.
1960 [Steve Henson; problem pointed out by Roland Dirlewanger]
1962 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1963 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1966 *) Add experimental JPAKE support, including demo authentication in
1967 s_client and s_server.
1970 *) Set the comparison function in v3_addr_canonize().
1971 [Rob Austein <sra@hactrn.net>]
1973 *) Add support for XMPP STARTTLS in s_client.
1974 [Philip Paeps <philip@freebsd.org>]
1976 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1977 to ensure that even with this option, only ciphersuites in the
1978 server's preference list will be accepted. (Note that the option
1979 applies only when resuming a session, so the earlier behavior was
1980 just about the algorithm choice for symmetric cryptography.)
1983 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1985 *) Fix NULL pointer dereference if a DTLS server received
1986 ChangeCipherSpec as first record (CVE-2009-1386).
1989 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1990 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1993 *) The fix in 0.9.8c that supposedly got rid of unsafe
1994 double-checked locking was incomplete for RSA blinding,
1995 addressing just one layer of what turns out to have been
1996 doubly unsafe triple-checked locking.
1998 So now fix this for real by retiring the MONT_HELPER macro
1999 in crypto/rsa/rsa_eay.c.
2001 [Bodo Moeller; problem pointed out by Marius Schilder]
2003 *) Various precautionary measures:
2005 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2007 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2008 (NB: This would require knowledge of the secret session ticket key
2009 to exploit, in which case you'd be SOL either way.)
2011 - Change bn_nist.c so that it will properly handle input BIGNUMs
2012 outside the expected range.
2014 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2017 [Neel Mehta, Bodo Moeller]
2019 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2020 the load fails. Useful for distros.
2021 [Ben Laurie and the FreeBSD team]
2023 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2026 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2029 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2031 This work was sponsored by Logica.
2034 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2035 keystores. Support for SSL/TLS client authentication too.
2036 Not compiled unless enable-capieng specified to Configure.
2038 This work was sponsored by Logica.
2041 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2042 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2043 attribute creation routines such as certifcate requests and PKCS#12
2047 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2049 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2050 handshake which could lead to a cilent crash as found using the
2051 Codenomicon TLS test suite (CVE-2008-1672)
2052 [Steve Henson, Mark Cox]
2054 *) Fix double free in TLS server name extensions which could lead to
2055 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2058 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2060 Clear the error queue to ensure that error entries left from
2061 older function calls do not interfere with the correct operation.
2062 [Lutz Jaenicke, Erik de Castro Lopo]
2064 *) Remove root CA certificates of commercial CAs:
2066 The OpenSSL project does not recommend any specific CA and does not
2067 have any policy with respect to including or excluding any CA.
2068 Therefore it does not make any sense to ship an arbitrary selection
2069 of root CA certificates with the OpenSSL software.
2072 *) RSA OAEP patches to fix two separate invalid memory reads.
2073 The first one involves inputs when 'lzero' is greater than
2074 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2075 before the beginning of from). The second one involves inputs where
2076 the 'db' section contains nothing but zeroes (there is a one-byte
2077 invalid read after the end of 'db').
2078 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2080 *) Partial backport from 0.9.9-dev:
2082 Introduce bn_mul_mont (dedicated Montgomery multiplication
2083 procedure) as a candidate for BIGNUM assembler implementation.
2084 While 0.9.9-dev uses assembler for various architectures, only
2085 x86_64 is available by default here in the 0.9.8 branch, and
2086 32-bit x86 is available through a compile-time setting.
2088 To try the 32-bit x86 assembler implementation, use Configure
2089 option "enable-montasm" (which exists only for this backport).
2091 As "enable-montasm" for 32-bit x86 disclaims code stability
2092 anyway, in this constellation we activate additional code
2093 backported from 0.9.9-dev for further performance improvements,
2094 namely BN_from_montgomery_word. (To enable this otherwise,
2095 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2097 [Andy Polyakov (backport partially by Bodo Moeller)]
2099 *) Add TLS session ticket callback. This allows an application to set
2100 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2101 values. This is useful for key rollover for example where several key
2102 sets may exist with different names.
2105 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2106 This was broken until now in 0.9.8 releases, such that the only way
2107 a registered ENGINE could be used (assuming it initialises
2108 successfully on the host) was to explicitly set it as the default
2109 for the relevant algorithms. This is in contradiction with 0.9.7
2110 behaviour and the documentation. With this fix, when an ENGINE is
2111 registered into a given algorithm's table of implementations, the
2112 'uptodate' flag is reset so that auto-discovery will be used next
2113 time a new context for that algorithm attempts to select an
2115 [Ian Lister (tweaked by Geoff Thorpe)]
2117 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2118 implemention in the following ways:
2120 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2123 Lack of BER streaming support means one pass streaming processing is
2124 only supported if data is detached: setting the streaming flag is
2125 ignored for embedded content.
2127 CMS support is disabled by default and must be explicitly enabled
2128 with the enable-cms configuration option.
2131 *) Update the GMP engine glue to do direct copies between BIGNUM and
2132 mpz_t when openssl and GMP use the same limb size. Otherwise the
2133 existing "conversion via a text string export" trick is still used.
2134 [Paul Sheer <paulsheer@gmail.com>]
2136 *) Zlib compression BIO. This is a filter BIO which compressed and
2137 uncompresses any data passed through it.
2140 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2141 RFC3394 compatible AES key wrapping.
2144 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2145 sets string data without copying. X509_ALGOR_set0() and
2146 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2147 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2148 from an X509_ATTRIBUTE structure optionally checking it occurs only
2149 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2153 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2154 to get the expected BN_FLG_CONSTTIME behavior.
2155 [Bodo Moeller (Google)]
2159 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2160 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2161 - added some more tests to do_tests.pl
2162 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2163 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2164 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2165 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2166 - various changes to netware.pl to enable gcc-cross builds on Win32
2168 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2169 - various changes to fix missing prototype warnings
2170 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2171 - added AES, WHIRLPOOL and CPUID assembler code to build files
2172 - added missing AES assembler make rules to mk1mf.pl
2173 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2174 [Guenter Knauf <eflash@gmx.net>]
2176 *) Implement certificate status request TLS extension defined in RFC3546.
2177 A client can set the appropriate parameters and receive the encoded
2178 OCSP response via a callback. A server can query the supplied parameters
2179 and set the encoded OCSP response in the callback. Add simplified examples
2180 to s_client and s_server.
2183 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2185 *) Fix various bugs:
2186 + Binary incompatibility of ssl_ctx_st structure
2187 + DTLS interoperation with non-compliant servers
2188 + Don't call get_session_cb() without proposed session
2189 + Fix ia64 assembler code
2190 [Andy Polyakov, Steve Henson]
2192 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2194 *) DTLS Handshake overhaul. There were longstanding issues with
2195 OpenSSL DTLS implementation, which were making it impossible for
2196 RFC 4347 compliant client to communicate with OpenSSL server.
2197 Unfortunately just fixing these incompatibilities would "cut off"
2198 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2199 server keeps tolerating non RFC compliant syntax. The opposite is
2200 not true, 0.9.8f client can not communicate with earlier server.
2201 This update even addresses CVE-2007-4995.
2204 *) Changes to avoid need for function casts in OpenSSL: some compilers
2205 (gcc 4.2 and later) reject their use.
2206 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2209 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2210 RFC4507bis. The encrypted ticket format is an encrypted encoded
2211 SSL_SESSION structure, that way new session features are automatically
2214 If a client application caches session in an SSL_SESSION structure
2215 support is transparent because tickets are now stored in the encoded
2218 The SSL_CTX structure automatically generates keys for ticket
2219 protection in servers so again support should be possible
2220 with no application modification.
2222 If a client or server wishes to disable RFC4507 support then the option
2223 SSL_OP_NO_TICKET can be set.
2225 Add a TLS extension debugging callback to allow the contents of any client
2226 or server extensions to be examined.
2228 This work was sponsored by Google.
2231 *) Add initial support for TLS extensions, specifically for the server_name
2232 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2233 have new members for a host name. The SSL data structure has an
2234 additional member SSL_CTX *initial_ctx so that new sessions can be
2235 stored in that context to allow for session resumption, even after the
2236 SSL has been switched to a new SSL_CTX in reaction to a client's
2237 server_name extension.
2239 New functions (subject to change):
2241 SSL_get_servername()
2242 SSL_get_servername_type()
2245 New CTRL codes and macros (subject to change):
2247 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2248 - SSL_CTX_set_tlsext_servername_callback()
2249 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2250 - SSL_CTX_set_tlsext_servername_arg()
2251 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2253 openssl s_client has a new '-servername ...' option.
2255 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2256 '-key2 ...', '-servername_fatal' (subject to change). This allows
2257 testing the HostName extension for a specific single host name ('-cert'
2258 and '-key' remain fallbacks for handshakes without HostName
2259 negotiation). If the unrecogninzed_name alert has to be sent, this by
2260 default is a warning; it becomes fatal with the '-servername_fatal'
2263 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2265 *) Add AES and SSE2 assembly language support to VC++ build.
2268 *) Mitigate attack on final subtraction in Montgomery reduction.
2271 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2272 (which previously caused an internal error).
2275 *) Squeeze another 10% out of IGE mode when in != out.
2278 *) AES IGE mode speedup.
2279 [Dean Gaudet (Google)]
2281 *) Add the Korean symmetric 128-bit cipher SEED (see
2282 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2283 add SEED ciphersuites from RFC 4162:
2285 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2286 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2287 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2288 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2290 To minimize changes between patchlevels in the OpenSSL 0.9.8
2291 series, SEED remains excluded from compilation unless OpenSSL
2292 is configured with 'enable-seed'.
2293 [KISA, Bodo Moeller]
2295 *) Mitigate branch prediction attacks, which can be practical if a
2296 single processor is shared, allowing a spy process to extract
2297 information. For detailed background information, see
2298 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2299 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2300 and Necessary Software Countermeasures"). The core of the change
2301 are new versions BN_div_no_branch() and
2302 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2303 respectively, which are slower, but avoid the security-relevant
2304 conditional branches. These are automatically called by BN_div()
2305 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2306 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2307 remove a conditional branch.
2309 BN_FLG_CONSTTIME is the new name for the previous
2310 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2311 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2312 in the exponent causes BN_mod_exp_mont() to use the alternative
2313 implementation in BN_mod_exp_mont_consttime().) The old name
2314 remains as a deprecated alias.
2316 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2317 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2318 constant-time implementations for more than just exponentiation.
2319 Here too the old name is kept as a deprecated alias.
2321 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2322 the BN_BLINDING structure gets an independent copy of the
2323 modulus. This means that the previous "BIGNUM *m" argument to
2324 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2325 essentially becomes "const BIGNUM *m", although we can't actually
2326 change this in the header file before 0.9.9. It allows
2327 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2328 enable BN_FLG_CONSTTIME.
2330 [Matthew D Wood (Intel Corp)]
2332 *) In the SSL/TLS server implementation, be strict about session ID
2333 context matching (which matters if an application uses a single
2334 external cache for different purposes). Previously,
2335 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2336 set. This did ensure strict client verification, but meant that,
2337 with applications using a single external cache for quite
2338 different requirements, clients could circumvent ciphersuite
2339 restrictions for a given session ID context by starting a session
2340 in a different context.
2343 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2344 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2345 authentication-only ciphersuites.
2348 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2349 not complete and could lead to a possible single byte overflow
2350 (CVE-2007-5135) [Ben Laurie]
2352 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2354 *) Since AES128 and AES256 (and similarly Camellia128 and
2355 Camellia256) share a single mask bit in the logic of
2356 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2357 kludge to work properly if AES128 is available and AES256 isn't
2358 (or if Camellia128 is available and Camellia256 isn't).
2361 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2362 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2363 When a point or a seed is encoded in a BIT STRING, we need to
2364 prevent the removal of trailing zero bits to get the proper DER
2365 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2366 of a NamedBitList, for which trailing 0 bits need to be removed.)
2369 *) Have SSL/TLS server implementation tolerate "mismatched" record
2370 protocol version while receiving ClientHello even if the
2371 ClientHello is fragmented. (The server can't insist on the
2372 particular protocol version it has chosen before the ServerHello
2373 message has informed the client about his choice.)
2376 *) Add RFC 3779 support.
2377 [Rob Austein for ARIN, Ben Laurie]
2379 *) Load error codes if they are not already present instead of using a
2380 static variable. This allows them to be cleanly unloaded and reloaded.
2381 Improve header file function name parsing.
2384 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2385 or CAPABILITY handshake as required by RFCs.
2388 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2390 *) Introduce limits to prevent malicious keys being able to
2391 cause a denial of service. (CVE-2006-2940)
2392 [Steve Henson, Bodo Moeller]
2394 *) Fix ASN.1 parsing of certain invalid structures that can result
2395 in a denial of service. (CVE-2006-2937) [Steve Henson]
2397 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2398 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2400 *) Fix SSL client code which could crash if connecting to a
2401 malicious SSLv2 server. (CVE-2006-4343)
2402 [Tavis Ormandy and Will Drewry, Google Security Team]
2404 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2405 match only those. Before that, "AES256-SHA" would be interpreted
2406 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2407 the same strength classification in 0.9.7h) as we currently only
2408 have a single AES bit in the ciphersuite description bitmap.
2409 That change, however, also applied to ciphersuite strings such as
2410 "RC4-MD5" that intentionally matched multiple ciphersuites --
2411 namely, SSL 2.0 ciphersuites in addition to the more common ones
2412 from SSL 3.0/TLS 1.0.
2414 So we change the selection algorithm again: Naming an explicit
2415 ciphersuite selects this one ciphersuite, and any other similar
2416 ciphersuite (same bitmap) from *other* protocol versions.
2417 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2418 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2420 Since SSL 2.0 does not have any ciphersuites for which the
2421 128/256 bit distinction would be relevant, this works for now.
2422 The proper fix will be to use different bits for AES128 and
2423 AES256, which would have avoided the problems from the beginning;
2424 however, bits are scarce, so we can only do this in a new release
2425 (not just a patchlevel) when we can change the SSL_CIPHER
2426 definition to split the single 'unsigned long mask' bitmap into
2427 multiple values to extend the available space.
2431 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2433 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2434 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2436 *) Add AES IGE and biIGE modes.
2439 *) Change the Unix randomness entropy gathering to use poll() when
2440 possible instead of select(), since the latter has some
2441 undesirable limitations.
2442 [Darryl Miles via Richard Levitte and Bodo Moeller]
2444 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2445 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2446 cannot be implicitly activated as part of, e.g., the "AES" alias.
2447 However, please upgrade to OpenSSL 0.9.9[-dev] for
2448 non-experimental use of the ECC ciphersuites to get TLS extension
2449 support, which is required for curve and point format negotiation
2450 to avoid potential handshake problems.
2453 *) Disable rogue ciphersuites:
2455 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2456 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2457 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2459 The latter two were purportedly from
2460 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2463 Also deactivate the remaining ciphersuites from
2464 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2465 unofficial, and the ID has long expired.
2468 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2469 dual-core machines) and other potential thread-safety issues.
2472 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2473 versions), which is now available for royalty-free use
2474 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2475 Also, add Camellia TLS ciphersuites from RFC 4132.
2477 To minimize changes between patchlevels in the OpenSSL 0.9.8
2478 series, Camellia remains excluded from compilation unless OpenSSL
2479 is configured with 'enable-camellia'.
2482 *) Disable the padding bug check when compression is in use. The padding
2483 bug check assumes the first packet is of even length, this is not
2484 necessarily true if compresssion is enabled and can result in false
2485 positives causing handshake failure. The actual bug test is ancient
2486 code so it is hoped that implementations will either have fixed it by
2487 now or any which still have the bug do not support compression.
2490 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2492 *) When applying a cipher rule check to see if string match is an explicit
2493 cipher suite and only match that one cipher suite if it is.
2496 *) Link in manifests for VC++ if needed.
2497 [Austin Ziegler <halostatue@gmail.com>]
2499 *) Update support for ECC-based TLS ciphersuites according to
2500 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2501 TLS extensions, which are supported starting with the 0.9.9
2502 branch, not in the OpenSSL 0.9.8 branch).
2505 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2506 opaque EVP_CIPHER_CTX handling.
2509 *) Fixes and enhancements to zlib compression code. We now only use
2510 "zlib1.dll" and use the default __cdecl calling convention on Win32
2511 to conform with the standards mentioned here:
2512 http://www.zlib.net/DLL_FAQ.txt
2513 Static zlib linking now works on Windows and the new --with-zlib-include
2514 --with-zlib-lib options to Configure can be used to supply the location
2515 of the headers and library. Gracefully handle case where zlib library
2519 *) Several fixes and enhancements to the OID generation code. The old code
2520 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2521 handle numbers larger than ULONG_MAX, truncated printing and had a
2522 non standard OBJ_obj2txt() behaviour.
2525 *) Add support for building of engines under engine/ as shared libraries
2526 under VC++ build system.
2529 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2530 Hopefully, we will not see any false combination of paths any more.
2533 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2535 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2536 (part of SSL_OP_ALL). This option used to disable the
2537 countermeasure against man-in-the-middle protocol-version
2538 rollback in the SSL 2.0 server implementation, which is a bad
2539 idea. (CVE-2005-2969)
2541 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2542 for Information Security, National Institute of Advanced Industrial
2543 Science and Technology [AIST], Japan)]
2545 *) Add two function to clear and return the verify parameter flags.
2548 *) Keep cipherlists sorted in the source instead of sorting them at
2549 runtime, thus removing the need for a lock.
2552 *) Avoid some small subgroup attacks in Diffie-Hellman.
2553 [Nick Mathewson and Ben Laurie]
2555 *) Add functions for well-known primes.
2558 *) Extended Windows CE support.
2559 [Satoshi Nakamura and Andy Polyakov]
2561 *) Initialize SSL_METHOD structures at compile time instead of during
2562 runtime, thus removing the need for a lock.
2565 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2566 attempting to decrypt each encrypted key in turn. Add support to
2570 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2572 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2575 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2578 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2579 key into the same file any more.
2582 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2585 *) Add -utf8 command line and config file option to 'ca'.
2586 [Stefan <stf@udoma.org]
2588 *) Removed the macro des_crypt(), as it seems to conflict with some
2589 libraries. Use DES_crypt().
2592 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2593 involves renaming the source and generated shared-libs for
2594 both. The engines will accept the corrected or legacy ids
2595 ('ncipher' and '4758_cca' respectively) when binding. NB,
2596 this only applies when building 'shared'.
2597 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2599 *) Add attribute functions to EVP_PKEY structure. Modify
2600 PKCS12_create() to recognize a CSP name attribute and
2601 use it. Make -CSP option work again in pkcs12 utility.
2604 *) Add new functionality to the bn blinding code:
2605 - automatic re-creation of the BN_BLINDING parameters after
2606 a fixed number of uses (currently 32)
2607 - add new function for parameter creation
2608 - introduce flags to control the update behaviour of the
2609 BN_BLINDING parameters
2610 - hide BN_BLINDING structure
2611 Add a second BN_BLINDING slot to the RSA structure to improve
2612 performance when a single RSA object is shared among several
2616 *) Add support for DTLS.
2617 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2619 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2620 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2623 *) Remove buggy and incompletet DH cert support from
2624 ssl/ssl_rsa.c and ssl/s3_both.c
2627 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2628 the apps/openssl applications.
2631 *) Compile clean with "-Wall -Wmissing-prototypes
2632 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2633 DEBUG_SAFESTACK must also be set.
2636 *) Change ./Configure so that certain algorithms can be disabled by default.
2637 The new counterpiece to "no-xxx" is "enable-xxx".
2639 The patented RC5 and MDC2 algorithms will now be disabled unless
2640 "enable-rc5" and "enable-mdc2", respectively, are specified.
2642 (IDEA remains enabled despite being patented. This is because IDEA
2643 is frequently required for interoperability, and there is no license
2644 fee for non-commercial use. As before, "no-idea" can be used to
2645 avoid this algorithm.)
2649 *) Add processing of proxy certificates (see RFC 3820). This work was
2650 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2651 EGEE (Enabling Grids for E-science in Europe).
2654 *) RC4 performance overhaul on modern architectures/implementations, such
2655 as Intel P4, IA-64 and AMD64.
2658 *) New utility extract-section.pl. This can be used specify an alternative
2659 section number in a pod file instead of having to treat each file as
2660 a separate case in Makefile. This can be done by adding two lines to the
2663 =for comment openssl_section:XXX
2665 The blank line is mandatory.
2669 *) New arguments -certform, -keyform and -pass for s_client and s_server
2670 to allow alternative format key and certificate files and passphrase
2674 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2675 update associated structures and add various utility functions.
2677 Add new policy related verify parameters, include policy checking in
2678 standard verify code. Enhance 'smime' application with extra parameters
2679 to support policy checking and print out.
2682 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2683 Nehemiah processors. These extensions support AES encryption in hardware
2684 as well as RNG (though RNG support is currently disabled).
2685 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2687 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2690 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2691 [Andy Polyakov and a number of other people]
2693 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2694 implementation contributed by IBM.
2695 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2697 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2698 exponent rather than 'unsigned long'. There is a corresponding change to
2699 the new 'rsa_keygen' element of the RSA_METHOD structure.
2700 [Jelte Jansen, Geoff Thorpe]
2702 *) Functionality for creating the initial serial number file is now
2703 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2705 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2706 number file to 1, which is bound to cause problems. To avoid
2707 the problems while respecting compatibility between different 0.9.7
2708 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2709 CA.pl for serial number initialization. With the new release 0.9.8,
2710 we can fix the problem directly in the 'ca' utility.)
2713 *) Reduced header interdepencies by declaring more opaque objects in
2714 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2715 give fewer recursive includes, which could break lazy source code - so
2716 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2717 developers should define this symbol when building and using openssl to
2718 ensure they track the recommended behaviour, interfaces, [etc], but
2719 backwards-compatible behaviour prevails when this isn't defined.
2722 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2725 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2726 This will generate a random key of the appropriate length based on the
2727 cipher context. The EVP_CIPHER can provide its own random key generation
2728 routine to support keys of a specific form. This is used in the des and
2729 3des routines to generate a key of the correct parity. Update S/MIME
2730 code to use new functions and hence generate correct parity DES keys.
2731 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2732 valid (weak or incorrect parity).
2735 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2736 as looking them up. This is useful when the verified structure may contain
2737 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2738 present unless the new PKCS7_NO_CRL flag is asserted.
2741 *) Extend ASN1 oid configuration module. It now additionally accepts the
2744 shortName = some long name, 1.2.3.4
2747 *) Reimplemented the BN_CTX implementation. There is now no more static
2748 limitation on the number of variables it can handle nor the depth of the
2749 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2750 information can now expand as required, and rather than having a single
2751 static array of bignums, BN_CTX now uses a linked-list of such arrays
2752 allowing it to expand on demand whilst maintaining the usefulness of
2753 BN_CTX's "bundling".
2756 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2757 to allow all RSA operations to function using a single BN_CTX.
2760 *) Preliminary support for certificate policy evaluation and checking. This
2761 is initially intended to pass the tests outlined in "Conformance Testing
2762 of Relying Party Client Certificate Path Processing Logic" v1.07.
2765 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2766 remained unused and not that useful. A variety of other little bignum
2767 tweaks and fixes have also been made continuing on from the audit (see
2771 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2772 associated ASN1, EVP and SSL functions and old ASN1 macros.
2775 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2776 and this should never fail. So the return value from the use of
2777 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2778 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2781 *) BN_CTX_get() should return zero-valued bignums, providing the same
2782 initialised value as BN_new().
2783 [Geoff Thorpe, suggested by Ulf Möller]
2785 *) Support for inhibitAnyPolicy certificate extension.
2788 *) An audit of the BIGNUM code is underway, for which debugging code is
2789 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2790 is considered valid when processing BIGNUMs, and causes execution to
2791 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2792 further steps are taken to deliberately pollute unused data in BIGNUM
2793 structures to try and expose faulty code further on. For now, openssl will
2794 (in its default mode of operation) continue to tolerate the inconsistent
2795 forms that it has tolerated in the past, but authors and packagers should
2796 consider trying openssl and their own applications when compiled with
2797 these debugging symbols defined. It will help highlight potential bugs in
2798 their own code, and will improve the test coverage for OpenSSL itself. At
2799 some point, these tighter rules will become openssl's default to improve
2800 maintainability, though the assert()s and other overheads will remain only
2801 in debugging configurations. See bn.h for more details.
2802 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2804 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2805 that can only be obtained through BN_CTX_new() (which implicitly
2806 initialises it). The presence of this function only made it possible
2807 to overwrite an existing structure (and cause memory leaks).
2810 *) Because of the callback-based approach for implementing LHASH as a
2811 template type, lh_insert() adds opaque objects to hash-tables and
2812 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2813 to clean up those corresponding objects before destroying the hash table
2814 (and losing the object pointers). So some over-zealous constifications in
2815 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2816 objects as "const" and the lh_doall[_arg] callback wrappers are not
2817 prototyped to have "const" restrictions on the object pointers they are
2818 given (and so aren't required to cast them away any more).
2821 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2822 (speed) prefers to use its own implementation. The two implementations
2823 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2824 its object type properly exposed (MS_TM) instead of casting to/from "char
2825 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2826 aren't necessarily the greatest nomenclatures - but this is what was used
2827 internally to the implementation so I've used that for now.
2830 *) Ensure that deprecated functions do not get compiled when
2831 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2832 the self-tests were still using deprecated key-generation functions so
2833 these have been updated also.
2836 *) Reorganise PKCS#7 code to separate the digest location functionality
2837 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2838 New function PKCS7_set_digest() to set the digest type for PKCS#7
2839 digestedData type. Add additional code to correctly generate the
2840 digestedData type and add support for this type in PKCS7 initialization
2844 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2845 structure of type "other".
2848 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2849 sure the loop does correctly stop and breaking ("division by zero")
2850 modulus operations are not performed. The (pre-generated) prime
2851 table crypto/bn/bn_prime.h was already correct, but it could not be
2852 re-generated on some platforms because of the "division by zero"
2853 situation in the script.
2854 [Ralf S. Engelschall]
2856 *) Update support for ECC-based TLS ciphersuites according to
2857 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2858 SHA-1 now is only used for "small" curves (where the
2859 representation of a field element takes up to 24 bytes); for
2860 larger curves, the field element resulting from ECDH is directly
2861 used as premaster secret.
2862 [Douglas Stebila (Sun Microsystems Laboratories)]
2864 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2865 curve secp160r1 to the tests.
2866 [Douglas Stebila (Sun Microsystems Laboratories)]
2868 *) Add the possibility to load symbols globally with DSO.
2869 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2871 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2872 control of the error stack.
2875 *) Add support for STORE in ENGINE.
2878 *) Add the STORE type. The intention is to provide a common interface
2879 to certificate and key stores, be they simple file-based stores, or
2880 HSM-type store, or LDAP stores, or...
2881 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2884 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2885 pass a list of arguments to any function as well as provide a way
2886 for a function to pass data back to the caller.
2889 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2890 works like BUF_strdup() but can be used to duplicate a portion of
2891 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2895 *) Add the function sk_find_ex() which works like sk_find(), but will
2896 return an index to an element even if an exact match couldn't be
2897 found. The index is guaranteed to point at the element where the
2898 searched-for key would be inserted to preserve sorting order.
2901 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2902 takes an extra flags argument for optional functionality. Currently,
2903 the following flags are defined:
2905 OBJ_BSEARCH_VALUE_ON_NOMATCH
2906 This one gets OBJ_bsearch_ex() to return a pointer to the first
2907 element where the comparing function returns a negative or zero
2910 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2911 This one gets OBJ_bsearch_ex() to return a pointer to the first
2912 element where the comparing function returns zero. This is useful
2913 if there are more than one element where the comparing function
2917 *) Make it possible to create self-signed certificates with 'openssl ca'
2918 in such a way that the self-signed certificate becomes part of the
2919 CA database and uses the same mechanisms for serial number generation
2920 as all other certificate signing. The new flag '-selfsign' enables
2921 this functionality. Adapt CA.sh and CA.pl.in.
2924 *) Add functionality to check the public key of a certificate request
2925 against a given private. This is useful to check that a certificate
2926 request can be signed by that key (self-signing).
2929 *) Make it possible to have multiple active certificates with the same
2930 subject in the CA index file. This is done only if the keyword
2931 'unique_subject' is set to 'no' in the main CA section (default
2932 if 'CA_default') of the configuration file. The value is saved
2933 with the database itself in a separate index attribute file,
2934 named like the index file with '.attr' appended to the name.
2937 *) Generate muti valued AVAs using '+' notation in config files for
2941 *) Support for nameConstraints certificate extension.
2944 *) Support for policyConstraints certificate extension.
2947 *) Support for policyMappings certificate extension.
2950 *) Make sure the default DSA_METHOD implementation only uses its
2951 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2952 and change its own handlers to be NULL so as to remove unnecessary
2953 indirection. This lets alternative implementations fallback to the
2954 default implementation more easily.
2957 *) Support for directoryName in GeneralName related extensions
2961 *) Make it possible to link applications using Makefile.shared.
2962 Make that possible even when linking against static libraries!
2965 *) Support for single pass processing for S/MIME signing. This now
2966 means that S/MIME signing can be done from a pipe, in addition
2967 cleartext signing (multipart/signed type) is effectively streaming
2968 and the signed data does not need to be all held in memory.
2970 This is done with a new flag PKCS7_STREAM. When this flag is set
2971 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2972 is done after the data is output (and digests calculated) in
2973 SMIME_write_PKCS7().
2976 *) Add full support for -rpath/-R, both in shared libraries and
2977 applications, at least on the platforms where it's known how
2981 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2982 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2983 will now compute a table of multiples of the generator that
2984 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2985 faster (notably in the case of a single point multiplication,
2986 scalar * generator).
2987 [Nils Larsch, Bodo Moeller]
2989 *) IPv6 support for certificate extensions. The various extensions
2990 which use the IP:a.b.c.d can now take IPv6 addresses using the
2991 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2995 *) Added an ENGINE that implements RSA by performing private key
2996 exponentiations with the GMP library. The conversions to and from
2997 GMP's mpz_t format aren't optimised nor are any montgomery forms
2998 cached, and on x86 it appears OpenSSL's own performance has caught up.
2999 However there are likely to be other architectures where GMP could
3000 provide a boost. This ENGINE is not built in by default, but it can be
3001 specified at Configure time and should be accompanied by the necessary
3002 linker additions, eg;
3003 ./config -DOPENSSL_USE_GMP -lgmp
3006 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3007 testing availability of engines with "-t" - the old behaviour is
3008 produced by increasing the feature's verbosity with "-tt".
3011 *) ECDSA routines: under certain error conditions uninitialized BN objects
3012 could be freed. Solution: make sure initialization is performed early
3013 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3017 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3018 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3019 software implementations. For DSA and DH, parameter generation can
3020 also be overriden by providing the appropriate method callbacks.
3023 *) Change the "progress" mechanism used in key-generation and
3024 primality testing to functions that take a new BN_GENCB pointer in
3025 place of callback/argument pairs. The new API functions have "_ex"
3026 postfixes and the older functions are reimplemented as wrappers for
3027 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3028 declarations of the old functions to help (graceful) attempts to
3029 migrate to the new functions. Also, the new key-generation API
3030 functions operate on a caller-supplied key-structure and return
3031 success/failure rather than returning a key or NULL - this is to
3032 help make "keygen" another member function of RSA_METHOD etc.
3034 Example for using the new callback interface:
3036 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3040 BN_GENCB_set(&my_cb, my_callback, my_arg);
3042 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3043 /* For the meaning of a, b in calls to my_callback(), see the
3044 * documentation of the function that calls the callback.
3045 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3046 * my_callback should return 1 if it wants BN_is_prime_ex()
3047 * to continue, or 0 to stop.
3052 *) Change the ZLIB compression method to be stateful, and make it
3053 available to TLS with the number defined in
3054 draft-ietf-tls-compression-04.txt.
3057 *) Add the ASN.1 structures and functions for CertificatePair, which
3058 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3060 CertificatePair ::= SEQUENCE {
3061 forward [0] Certificate OPTIONAL,
3062 reverse [1] Certificate OPTIONAL,
3063 -- at least one of the pair shall be present -- }
3065 Also implement the PEM functions to read and write certificate
3066 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3068 This needed to be defined, mostly for the sake of the LDAP
3069 attribute crossCertificatePair, but may prove useful elsewhere as
3073 *) Make it possible to inhibit symlinking of shared libraries in
3074 Makefile.shared, for Cygwin's sake.
3077 *) Extend the BIGNUM API by creating a function
3078 void BN_set_negative(BIGNUM *a, int neg);
3079 and a macro that behave like
3080 int BN_is_negative(const BIGNUM *a);
3082 to avoid the need to access 'a->neg' directly in applications.
3085 *) Implement fast modular reduction for pseudo-Mersenne primes
3086 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3087 EC_GROUP_new_curve_GFp() will now automatically use this
3089 [Nils Larsch <nla@trustcenter.de>]
3091 *) Add new lock type (CRYPTO_LOCK_BN).
3094 *) Change the ENGINE framework to automatically load engines
3095 dynamically from specific directories unless they could be
3096 found to already be built in or loaded. Move all the
3097 current engines except for the cryptodev one to a new
3099 The engines in engines/ are built as shared libraries if
3100 the "shared" options was given to ./Configure or ./config.
3101 Otherwise, they are inserted in libcrypto.a.
3102 /usr/local/ssl/engines is the default directory for dynamic
3103 engines, but that can be overriden at configure time through
3104 the usual use of --prefix and/or --openssldir, and at run
3105 time with the environment variable OPENSSL_ENGINES.
3106 [Geoff Thorpe and Richard Levitte]
3108 *) Add Makefile.shared, a helper makefile to build shared
3109 libraries. Addapt Makefile.org.
3112 *) Add version info to Win32 DLLs.
3113 [Peter 'Luna' Runestig" <peter@runestig.com>]
3115 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3116 can be added using this API to created arbitrary PKCS#12
3117 files while avoiding the low level API.
3119 New options to PKCS12_create(), key or cert can be NULL and
3120 will then be omitted from the output file. The encryption
3121 algorithm NIDs can be set to -1 for no encryption, the mac
3122 iteration count can be set to 0 to omit the mac.
3124 Enhance pkcs12 utility by making the -nokeys and -nocerts
3125 options work when creating a PKCS#12 file. New option -nomac
3126 to omit the mac, NONE can be set for an encryption algorithm.
3127 New code is modified to use the enhanced PKCS12_create()
3128 instead of the low level API.
3131 *) Extend ASN1 encoder to support indefinite length constructed
3132 encoding. This can output sequences tags and octet strings in
3133 this form. Modify pk7_asn1.c to support indefinite length
3134 encoding. This is experimental and needs additional code to
3135 be useful, such as an ASN1 bio and some enhanced streaming
3138 Extend template encode functionality so that tagging is passed
3139 down to the template encoder.
3142 *) Let 'openssl req' fail if an argument to '-newkey' is not
3143 recognized instead of using RSA as a default.
3146 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3147 As these are not official, they are not included in "ALL";
3148 the "ECCdraft" ciphersuite group alias can be used to select them.
3149 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3151 *) Add ECDH engine support.
3152 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3154 *) Add ECDH in new directory crypto/ecdh/.
3155 [Douglas Stebila (Sun Microsystems Laboratories)]
3157 *) Let BN_rand_range() abort with an error after 100 iterations
3158 without success (which indicates a broken PRNG).
3161 *) Change BN_mod_sqrt() so that it verifies that the input value
3162 is really the square of the return value. (Previously,
3163 BN_mod_sqrt would show GIGO behaviour.)
3166 *) Add named elliptic curves over binary fields from X9.62, SECG,
3167 and WAP/WTLS; add OIDs that were still missing.
3169 [Sheueling Chang Shantz and Douglas Stebila
3170 (Sun Microsystems Laboratories)]
3172 *) Extend the EC library for elliptic curves over binary fields
3173 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3176 EC_GF2m_simple_method
3180 EC_GROUP_new_curve_GF2m
3181 EC_GROUP_set_curve_GF2m
3182 EC_GROUP_get_curve_GF2m
3183 EC_POINT_set_affine_coordinates_GF2m
3184 EC_POINT_get_affine_coordinates_GF2m
3185 EC_POINT_set_compressed_coordinates_GF2m
3187 Point compression for binary fields is disabled by default for
3188 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3191 As binary polynomials are represented as BIGNUMs, various members
3192 of the EC_GROUP and EC_POINT data structures can be shared
3193 between the implementations for prime fields and binary fields;
3194 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3195 are essentially identical to their ..._GFp counterparts.
3196 (For simplicity, the '..._GFp' prefix has been dropped from
3197 various internal method names.)
3199 An internal 'field_div' method (similar to 'field_mul' and
3200 'field_sqr') has been added; this is used only for binary fields.
3202 [Sheueling Chang Shantz and Douglas Stebila
3203 (Sun Microsystems Laboratories)]
3205 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3206 through methods ('mul', 'precompute_mult').
3208 The generic implementations (now internally called 'ec_wNAF_mul'
3209 and 'ec_wNAF_precomputed_mult') remain the default if these
3210 methods are undefined.
3212 [Sheueling Chang Shantz and Douglas Stebila
3213 (Sun Microsystems Laboratories)]
3215 *) New function EC_GROUP_get_degree, which is defined through
3216 EC_METHOD. For curves over prime fields, this returns the bit
3217 length of the modulus.
3219 [Sheueling Chang Shantz and Douglas Stebila
3220 (Sun Microsystems Laboratories)]
3222 *) New functions EC_GROUP_dup, EC_POINT_dup.
3223 (These simply call ..._new and ..._copy).
3225 [Sheueling Chang Shantz and Douglas Stebila
3226 (Sun Microsystems Laboratories)]
3228 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3229 Polynomials are represented as BIGNUMs (where the sign bit is not
3230 used) in the following functions [macros]:
3233 BN_GF2m_sub [= BN_GF2m_add]
3234 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3235 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3236 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3238 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3239 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3240 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3241 BN_GF2m_cmp [= BN_ucmp]
3243 (Note that only the 'mod' functions are actually for fields GF(2^m).
3244 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3246 For some functions, an the irreducible polynomial defining a
3247 field can be given as an 'unsigned int[]' with strictly
3248 decreasing elements giving the indices of those bits that are set;
3249 i.e., p[] represents the polynomial
3250 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3252 p[0] > p[1] > ... > p[k] = 0.
3253 This applies to the following functions:
3258 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3259 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3261 BN_GF2m_mod_sqrt_arr
3262 BN_GF2m_mod_solve_quad_arr
3266 Conversion can be performed by the following functions:
3271 bntest.c has additional tests for binary polynomial arithmetic.
3273 Two implementations for BN_GF2m_mod_div() are available.
3274 The default algorithm simply uses BN_GF2m_mod_inv() and
3275 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3276 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3277 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3279 [Sheueling Chang Shantz and Douglas Stebila
3280 (Sun Microsystems Laboratories)]
3282 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3283 functionality is disabled at compile-time.
3284 [Douglas Stebila <douglas.stebila@sun.com>]
3286 *) Change default behaviour of 'openssl asn1parse' so that more
3287 information is visible when viewing, e.g., a certificate:
3289 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3290 mode the content of non-printable OCTET STRINGs is output in a
3291 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3292 avoid the appearance of a printable string.
3293 [Nils Larsch <nla@trustcenter.de>]
3295 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3297 EC_GROUP_set_asn1_flag()
3298 EC_GROUP_get_asn1_flag()
3299 EC_GROUP_set_point_conversion_form()
3300 EC_GROUP_get_point_conversion_form()
3301 These control ASN1 encoding details:
3302 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3303 has been set to OPENSSL_EC_NAMED_CURVE.
3304 - Points are encoded in uncompressed form by default; options for
3305 asn1_for are as for point2oct, namely
3306 POINT_CONVERSION_COMPRESSED
3307 POINT_CONVERSION_UNCOMPRESSED
3308 POINT_CONVERSION_HYBRID
3310 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3313 EC_GROUP_get0_seed()
3314 EC_GROUP_get_seed_len()
3315 This is used only for ASN1 purposes (so far).
3316 [Nils Larsch <nla@trustcenter.de>]
3318 *) Add 'field_type' member to EC_METHOD, which holds the NID
3319 of the appropriate field type OID. The new function
3320 EC_METHOD_get_field_type() returns this value.
3321 [Nils Larsch <nla@trustcenter.de>]
3326 EC_POINT_point2hex()
3327 EC_POINT_hex2point()
3328 providing useful interfaces to EC_POINT_point2oct() and
3329 EC_POINT_oct2point().
3330 [Nils Larsch <nla@trustcenter.de>]
3332 *) Change internals of the EC library so that the functions
3333 EC_GROUP_set_generator()
3334 EC_GROUP_get_generator()
3335 EC_GROUP_get_order()
3336 EC_GROUP_get_cofactor()
3337 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3338 to methods, which would lead to unnecessary code duplication when
3339 adding different types of curves.
3340 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3342 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3343 arithmetic, and such that modified wNAFs are generated
3344 (which avoid length expansion in many cases).
3347 *) Add a function EC_GROUP_check_discriminant() (defined via
3348 EC_METHOD) that verifies that the curve discriminant is non-zero.
3350 Add a function EC_GROUP_check() that makes some sanity tests
3351 on a EC_GROUP, its generator and order. This includes
3352 EC_GROUP_check_discriminant().
3353 [Nils Larsch <nla@trustcenter.de>]
3355 *) Add ECDSA in new directory crypto/ecdsa/.
3357 Add applications 'openssl ecparam' and 'openssl ecdsa'
3358 (these are based on 'openssl dsaparam' and 'openssl dsa').
3360 ECDSA support is also included in various other files across the
3361 library. Most notably,
3362 - 'openssl req' now has a '-newkey ecdsa:file' option;
3363 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3364 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3365 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3366 them suitable for ECDSA where domain parameters must be
3367 extracted before the specific public key;
3368 - ECDSA engine support has been added.
3369 [Nils Larsch <nla@trustcenter.de>]
3371 *) Include some named elliptic curves, and add OIDs from X9.62,
3372 SECG, and WAP/WTLS. Each curve can be obtained from the new
3374 EC_GROUP_new_by_curve_name(),
3375 and the list of available named curves can be obtained with
3376 EC_get_builtin_curves().
3377 Also add a 'curve_name' member to EC_GROUP objects, which can be
3379 EC_GROUP_set_curve_name()
3380 EC_GROUP_get_curve_name()
3381 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3383 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3384 was actually never needed) and in BN_mul(). The removal in BN_mul()
3385 required a small change in bn_mul_part_recursive() and the addition
3386 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3387 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3388 bn_sub_words() and bn_add_words() except they take arrays with
3392 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3394 *) Cleanse PEM buffers before freeing them since they may contain
3396 [Benjamin Bennett <ben@psc.edu>]
3398 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3399 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3400 authentication-only ciphersuites.
3403 *) Since AES128 and AES256 share a single mask bit in the logic of
3404 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3405 kludge to work properly if AES128 is available and AES256 isn't.
3408 *) Expand security boundary to match 1.1.1 module.
3411 *) Remove redundant features: hash file source, editing of test vectors
3412 modify fipsld to use external fips_premain.c signature.
3415 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3416 run algorithm test programs.
3419 *) Make algorithm test programs more tolerant of whitespace.
3422 *) Have SSL/TLS server implementation tolerate "mismatched" record
3423 protocol version while receiving ClientHello even if the
3424 ClientHello is fragmented. (The server can't insist on the
3425 particular protocol version it has chosen before the ServerHello
3426 message has informed the client about his choice.)
3429 *) Load error codes if they are not already present instead of using a
3430 static variable. This allows them to be cleanly unloaded and reloaded.
3433 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3435 *) Introduce limits to prevent malicious keys being able to
3436 cause a denial of service. (CVE-2006-2940)
3437 [Steve Henson, Bodo Moeller]
3439 *) Fix ASN.1 parsing of certain invalid structures that can result
3440 in a denial of service. (CVE-2006-2937) [Steve Henson]
3442 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3443 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3445 *) Fix SSL client code which could crash if connecting to a
3446 malicious SSLv2 server. (CVE-2006-4343)
3447 [Tavis Ormandy and Will Drewry, Google Security Team]
3449 *) Change ciphersuite string processing so that an explicit
3450 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3451 will no longer include "AES128-SHA"), and any other similar
3452 ciphersuite (same bitmap) from *other* protocol versions (so that
3453 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3454 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3455 changes from 0.9.8b and 0.9.8d.
3458 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3460 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3461 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3463 *) Change the Unix randomness entropy gathering to use poll() when
3464 possible instead of select(), since the latter has some
3465 undesirable limitations.
3466 [Darryl Miles via Richard Levitte and Bodo Moeller]
3468 *) Disable rogue ciphersuites:
3470 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3471 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3472 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3474 The latter two were purportedly from
3475 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3478 Also deactive the remaining ciphersuites from
3479 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3480 unofficial, and the ID has long expired.
3483 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3484 dual-core machines) and other potential thread-safety issues.
3487 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3489 *) Adapt fipsld and the build system to link against the validated FIPS
3490 module in FIPS mode.
3493 *) Fixes for VC++ 2005 build under Windows.
3496 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3497 from a Windows bash shell such as MSYS. It is autodetected from the
3498 "config" script when run from a VC++ environment. Modify standard VC++
3499 build to use fipscanister.o from the GNU make build.
3502 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3504 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3505 The value now differs depending on if you build for FIPS or not.
3506 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3507 safely run with a non-FIPSed libcrypto, as it may crash because of
3508 the difference induced by this change.
3511 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3513 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3514 (part of SSL_OP_ALL). This option used to disable the
3515 countermeasure against man-in-the-middle protocol-version
3516 rollback in the SSL 2.0 server implementation, which is a bad
3517 idea. (CVE-2005-2969)
3519 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3520 for Information Security, National Institute of Advanced Industrial
3521 Science and Technology [AIST], Japan)]
3523 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3524 mainly for FIPS compliance and not fully integrated at this stage.
3527 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3528 the exponentiation using a fixed-length exponent. (Otherwise,
3529 the information leaked through timing could expose the secret key
3530 after many signatures; cf. Bleichenbacher's attack on DSA with
3534 *) Make a new fixed-window mod_exp implementation the default for
3535 RSA, DSA, and DH private-key operations so that the sequence of
3536 squares and multiplies and the memory access pattern are
3537 independent of the particular secret key. This will mitigate
3538 cache-timing and potential related attacks.
3540 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3541 and this is automatically used by BN_mod_exp_mont() if the new flag
3542 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3543 will use this BN flag for private exponents unless the flag
3544 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3545 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3547 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3549 *) Change the client implementation for SSLv23_method() and
3550 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3551 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3552 (Previously, the SSL 2.0 backwards compatible Client Hello
3553 message format would be used even with SSL_OP_NO_SSLv2.)
3556 *) Add support for smime-type MIME parameter in S/MIME messages which some
3560 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3561 a threadsafe manner. Modify rsa code to use new function and add calls
3562 to dsa and dh code (which had race conditions before).
3565 *) Include the fixed error library code in the C error file definitions
3566 instead of fixing them up at runtime. This keeps the error code
3567 structures constant.
3570 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3572 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3575 *) Fixes for newer kerberos headers. NB: the casts are needed because
3576 the 'length' field is signed on one version and unsigned on another
3577 with no (?) obvious way to tell the difference, without these VC++
3578 complains. Also the "definition" of FAR (blank) is no longer included
3579 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3580 some needed definitions.
3583 *) Undo Cygwin change.
3586 *) Added support for proxy certificates according to RFC 3820.
3587 Because they may be a security thread to unaware applications,
3588 they must be explicitely allowed in run-time. See
3589 docs/HOWTO/proxy_certificates.txt for further information.
3592 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3594 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3595 server and client random values. Previously
3596 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3597 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3599 This change has negligible security impact because:
3601 1. Server and client random values still have 24 bytes of pseudo random
3604 2. Server and client random values are sent in the clear in the initial
3607 3. The master secret is derived using the premaster secret (48 bytes in
3608 size for static RSA ciphersuites) as well as client server and random
3611 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3614 [Stephen Henson, reported by UK NISCC]
3616 *) Use Windows randomness collection on Cygwin.
3619 *) Fix hang in EGD/PRNGD query when communication socket is closed
3620 prematurely by EGD/PRNGD.
3621 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3623 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3626 *) Back-port of selected performance improvements from development
3627 branch, as well as improved support for PowerPC platforms.
3630 *) Add lots of checks for memory allocation failure, error codes to indicate
3631 failure and freeing up memory if a failure occurs.
3632 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3634 *) Add new -passin argument to dgst.
3637 *) Perform some character comparisons of different types in X509_NAME_cmp:
3638 this is needed for some certificates that reencode DNs into UTF8Strings
3639 (in violation of RFC3280) and can't or wont issue name rollover
3643 *) Make an explicit check during certificate validation to see that
3644 the CA setting in each certificate on the chain is correct. As a
3645 side effect always do the following basic checks on extensions,
3646 not just when there's an associated purpose to the check:
3648 - if there is an unhandled critical extension (unless the user
3649 has chosen to ignore this fault)
3650 - if the path length has been exceeded (if one is set at all)
3651 - that certain extensions fit the associated purpose (if one has
3655 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3657 *) Avoid a race condition when CRLs are checked in a multi threaded
3658 environment. This would happen due to the reordering of the revoked
3659 entries during signature checking and serial number lookup. Now the
3660 encoding is cached and the serial number sort performed under a lock.
3661 Add new STACK function sk_is_sorted().
3664 *) Add Delta CRL to the extension code.
3667 *) Various fixes to s3_pkt.c so alerts are sent properly.
3668 [David Holmes <d.holmes@f5.com>]
3670 *) Reduce the chances of duplicate issuer name and serial numbers (in
3671 violation of RFC3280) using the OpenSSL certificate creation utilities.
3672 This is done by creating a random 64 bit value for the initial serial
3673 number when a serial number file is created or when a self signed
3674 certificate is created using 'openssl req -x509'. The initial serial
3675 number file is created using 'openssl x509 -next_serial' in CA.pl
3676 rather than being initialized to 1.
3679 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3681 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3682 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3683 [Joe Orton, Steve Henson]
3685 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3687 [Joe Orton, Steve Henson]
3689 *) Make it possible to have multiple active certificates with the same
3690 subject in the CA index file. This is done only if the keyword
3691 'unique_subject' is set to 'no' in the main CA section (default
3692 if 'CA_default') of the configuration file. The value is saved
3693 with the database itself in a separate index attribute file,
3694 named like the index file with '.attr' appended to the name.
3697 *) X509 verify fixes. Disable broken certificate workarounds when
3698 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3699 keyUsage extension present. Don't accept CRLs with unhandled critical
3700 extensions: since verify currently doesn't process CRL extensions this
3701 rejects a CRL with *any* critical extensions. Add new verify error codes
3705 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3706 A clarification of RFC2560 will require the use of OCTET STRINGs and
3707 some implementations cannot handle the current raw format. Since OpenSSL
3708 copies and compares OCSP nonces as opaque blobs without any attempt at
3709 parsing them this should not create any compatibility issues.
3712 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3713 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3714 this HMAC (and other) operations are several times slower than OpenSSL
3718 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3719 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3721 *) Use the correct content when signing type "other".
3724 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3726 *) Fix various bugs revealed by running the NISCC test suite:
3728 Stop out of bounds reads in the ASN1 code when presented with
3729 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3731 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3733 If verify callback ignores invalid public key errors don't try to check
3734 certificate signature with the NULL public key.
3738 *) New -ignore_err option in ocsp application to stop the server
3739 exiting on the first error in a request.
3742 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3743 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3747 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3748 extra data after the compression methods not only for TLS 1.0
3749 but also for SSL 3.0 (as required by the specification).
3750 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3752 *) Change X509_certificate_type() to mark the key as exported/exportable
3753 when it's 512 *bits* long, not 512 bytes.
3756 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3757 blocks during encryption.
3760 *) Various fixes to base64 BIO and non blocking I/O. On write
3761 flushes were not handled properly if the BIO retried. On read
3762 data was not being buffered properly and had various logic bugs.
3763 This also affects blocking I/O when the data being decoded is a
3767 *) Various S/MIME bugfixes and compatibility changes:
3768 output correct application/pkcs7 MIME type if
3769 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3770 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3771 of files as .eml work). Correctly handle very long lines in MIME
3775 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3777 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3778 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3779 a protocol version number mismatch like a decryption error
3780 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3783 *) Turn on RSA blinding by default in the default implementation
3784 to avoid a timing attack. Applications that don't want it can call
3785 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3786 They would be ill-advised to do so in most cases.
3787 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3789 *) Change RSA blinding code so that it works when the PRNG is not
3790 seeded (in this case, the secret RSA exponent is abused as
3791 an unpredictable seed -- if it is not unpredictable, there
3792 is no point in blinding anyway). Make RSA blinding thread-safe
3793 by remembering the creator's thread ID in rsa->blinding and
3794 having all other threads use local one-time blinding factors
3795 (this requires more computation than sharing rsa->blinding, but
3796 avoids excessive locking; and if an RSA object is not shared
3797 between threads, blinding will still be very fast).
3800 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3801 ENGINE as defaults for all supported algorithms irrespective of
3802 the 'flags' parameter. 'flags' is now honoured, so applications
3803 should make sure they are passing it correctly.
3806 *) Target "mingw" now allows native Windows code to be generated in
3807 the Cygwin environment as well as with the MinGW compiler.
3810 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3812 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3813 via timing by performing a MAC computation even if incorrrect
3814 block cipher padding has been found. This is a countermeasure
3815 against active attacks where the attacker has to distinguish
3816 between bad padding and a MAC verification error. (CVE-2003-0078)
3818 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3819 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3820 Martin Vuagnoux (EPFL, Ilion)]
3822 *) Make the no-err option work as intended. The intention with no-err
3823 is not to have the whole error stack handling routines removed from
3824 libcrypto, it's only intended to remove all the function name and
3825 reason texts, thereby removing some of the footprint that may not
3826 be interesting if those errors aren't displayed anyway.
3828 NOTE: it's still possible for any application or module to have it's
3829 own set of error texts inserted. The routines are there, just not
3830 used by default when no-err is given.
3833 *) Add support for FreeBSD on IA64.
3834 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3836 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3837 Kerberos function mit_des_cbc_cksum(). Before this change,
3838 the value returned by DES_cbc_cksum() was like the one from
3839 mit_des_cbc_cksum(), except the bytes were swapped.
3840 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3842 *) Allow an application to disable the automatic SSL chain building.
3843 Before this a rather primitive chain build was always performed in
3844 ssl3_output_cert_chain(): an application had no way to send the
3845 correct chain if the automatic operation produced an incorrect result.
3847 Now the chain builder is disabled if either:
3849 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3851 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3853 The reasoning behind this is that an application would not want the
3854 auto chain building to take place if extra chain certificates are
3855 present and it might also want a means of sending no additional
3856 certificates (for example the chain has two certificates and the
3860 *) Add the possibility to build without the ENGINE framework.
3861 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3863 *) Under Win32 gmtime() can return NULL: check return value in
3864 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3867 *) DSA routines: under certain error conditions uninitialized BN objects
3868 could be freed. Solution: make sure initialization is performed early
3869 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3870 Nils Larsch <nla@trustcenter.de> via PR#459)
3873 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3874 checked on reconnect on the client side, therefore session resumption
3875 could still fail with a "ssl session id is different" error. This
3876 behaviour is masked when SSL_OP_ALL is used due to
3877 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3878 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3879 followup to PR #377.
3882 *) IA-32 assembler support enhancements: unified ELF targets, support
3883 for SCO/Caldera platforms, fix for Cygwin shared build.
3886 *) Add support for FreeBSD on sparc64. As a consequence, support for
3887 FreeBSD on non-x86 processors is separate from x86 processors on
3888 the config script, much like the NetBSD support.
3889 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3891 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3893 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3896 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3897 code (06) was taken as the first octet of the session ID and the last
3898 octet was ignored consequently. As a result SSLv2 client side session
3899 caching could not have worked due to the session ID mismatch between
3901 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3905 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3906 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3910 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3911 seems that in spite of existing for more than a year, many application
3912 author have done nothing to provide the necessary callbacks, which
3913 means that this particular engine will not work properly anywhere.
3914 This is a very unfortunate situation which forces us, in the name
3915 of usability, to give the hw_ncipher.c a static lock, which is part
3917 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3918 appear in 0.9.8 or later. We EXPECT application authors to have
3919 dealt properly with this when 0.9.8 is released (unless we actually
3920 make such changes in the libcrypto locking code that changes will
3921 have to be made anyway).
3924 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3925 octets have been read, EOF or an error occurs. Without this change
3926 some truncated ASN1 structures will not produce an error.
3929 *) Disable Heimdal support, since it hasn't been fully implemented.
3930 Still give the possibility to force the use of Heimdal, but with
3931 warnings and a request that patches get sent to openssl-dev.
3934 *) Add the VC-CE target, introduce the WINCE sysname, and add
3935 INSTALL.WCE and appropriate conditionals to make it build.
3936 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3938 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3939 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3940 edit numbers of the version.
3941 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3943 *) Introduce safe string copy and catenation functions
3944 (BUF_strlcpy() and BUF_strlcat()).
3945 [Ben Laurie (CHATS) and Richard Levitte]
3947 *) Avoid using fixed-size buffers for one-line DNs.
3948 [Ben Laurie (CHATS)]
3950 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3951 resizing buffers containing secrets, and use where appropriate.
3952 [Ben Laurie (CHATS)]
3954 *) Avoid using fixed size buffers for configuration file location.
3955 [Ben Laurie (CHATS)]
3957 *) Avoid filename truncation for various CA files.
3958 [Ben Laurie (CHATS)]
3960 *) Use sizeof in preference to magic numbers.
3961 [Ben Laurie (CHATS)]
3963 *) Avoid filename truncation in cert requests.
3964 [Ben Laurie (CHATS)]
3966 *) Add assertions to check for (supposedly impossible) buffer
3968 [Ben Laurie (CHATS)]
3970 *) Don't cache truncated DNS entries in the local cache (this could
3971 potentially lead to a spoofing attack).
3972 [Ben Laurie (CHATS)]
3974 *) Fix various buffers to be large enough for hex/decimal
3975 representations in a platform independent manner.
3976 [Ben Laurie (CHATS)]
3978 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3979 resizing buffers containing secrets, and use where appropriate.
3980 [Ben Laurie (CHATS)]
3982 *) Add BIO_indent() to avoid much slightly worrying code to do
3984 [Ben Laurie (CHATS)]
3986 *) Convert sprintf()/BIO_puts() to BIO_printf().
3987 [Ben Laurie (CHATS)]
3989 *) buffer_gets() could terminate with the buffer only half
3991 [Ben Laurie (CHATS)]
3993 *) Add assertions to prevent user-supplied crypto functions from
3994 overflowing internal buffers by having large block sizes, etc.
3995 [Ben Laurie (CHATS)]
3997 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3999 [Ben Laurie (CHATS)]
4001 *) Eliminate unused copy of key in RC4.
4002 [Ben Laurie (CHATS)]
4004 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
4005 [Ben Laurie (CHATS)]
4007 *) Fix off-by-one error in EGD path.
4008 [Ben Laurie (CHATS)]
4010 *) If RANDFILE path is too long, ignore instead of truncating.
4011 [Ben Laurie (CHATS)]
4013 *) Eliminate unused and incorrectly sized X.509 structure
4015 [Ben Laurie (CHATS)]
4017 *) Eliminate unused and dangerous function knumber().
4018 [Ben Laurie (CHATS)]
4020 *) Eliminate unused and dangerous structure, KSSL_ERR.
4021 [Ben Laurie (CHATS)]
4023 *) Protect against overlong session ID context length in an encoded
4024 session object. Since these are local, this does not appear to be
4026 [Ben Laurie (CHATS)]
4028 *) Change from security patch (see 0.9.6e below) that did not affect
4029 the 0.9.6 release series:
4031 Remote buffer overflow in SSL3 protocol - an attacker could
4032 supply an oversized master key in Kerberos-enabled versions.
4034 [Ben Laurie (CHATS)]
4036 *) Change the SSL kerb5 codes to match RFC 2712.
4039 *) Make -nameopt work fully for req and add -reqopt switch.
4040 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
4042 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
4043 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
4045 *) Make sure tests can be performed even if the corresponding algorithms
4046 have been removed entirely. This was also the last step to make
4047 OpenSSL compilable with DJGPP under all reasonable conditions.
4048 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
4050 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
4051 to allow version independent disabling of normally unselected ciphers,
4052 which may be activated as a side-effect of selecting a single cipher.
4054 (E.g., cipher list string "RSA" enables ciphersuites that are left
4055 out of "ALL" because they do not provide symmetric encryption.
4056 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
4057 [Lutz Jaenicke, Bodo Moeller]
4059 *) Add appropriate support for separate platform-dependent build
4060 directories. The recommended way to make a platform-dependent
4061 build directory is the following (tested on Linux), maybe with
4064 # Place yourself outside of the OpenSSL source tree. In
4065 # this example, the environment variable OPENSSL_SOURCE
4066 # is assumed to contain the absolute OpenSSL source directory.
4067 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
4068 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
4069 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
4070 mkdir -p `dirname $F`
4071 ln -s $OPENSSL_SOURCE/$F $F
4074 To be absolutely sure not to disturb the source tree, a "make clean"
4075 is a good thing. If it isn't successfull, don't worry about it,
4076 it probably means the source directory is very clean.
4079 *) Make sure any ENGINE control commands make local copies of string
4080 pointers passed to them whenever necessary. Otherwise it is possible
4081 the caller may have overwritten (or deallocated) the original string
4082 data when a later ENGINE operation tries to use the stored values.
4083 [Götz Babin-Ebell <babinebell@trustcenter.de>]
4085 *) Improve diagnostics in file reading and command-line digests.
4086 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
4088 *) Add AES modes CFB and OFB to the object database. Correct an
4089 error in AES-CFB decryption.
4092 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
4093 allows existing EVP_CIPHER_CTX structures to be reused after
4094 calling EVP_*Final(). This behaviour is used by encryption
4095 BIOs and some applications. This has the side effect that
4096 applications must explicitly clean up cipher contexts with
4097 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4100 *) Check the values of dna and dnb in bn_mul_recursive before calling
4101 bn_mul_comba (a non zero value means the a or b arrays do not contain
4102 n2 elements) and fallback to bn_mul_normal if either is not zero.
4105 *) Fix escaping of non-ASCII characters when using the -subj option
4106 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4109 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4110 form for "surname", serialNumber has no short form.
4111 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4112 therefore remove "mail" short name for "internet 7".
4113 The OID for unique identifiers in X509 certificates is
4114 x500UniqueIdentifier, not uniqueIdentifier.
4115 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4118 *) Add an "init" command to the ENGINE config module and auto initialize
4119 ENGINEs. Without any "init" command the ENGINE will be initialized
4120 after all ctrl commands have been executed on it. If init=1 the
4121 ENGINE is initailized at that point (ctrls before that point are run
4122 on the uninitialized ENGINE and after on the initialized one). If
4123 init=0 then the ENGINE will not be iniatialized at all.
4126 *) Fix the 'app_verify_callback' interface so that the user-defined
4127 argument is actually passed to the callback: In the
4128 SSL_CTX_set_cert_verify_callback() prototype, the callback
4129 declaration has been changed from
4132 int (*cb)(X509_STORE_CTX *,void *);
4133 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4134 i=s->ctx->app_verify_callback(&ctx)
4135 has been changed into
4136 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4138 To update applications using SSL_CTX_set_cert_verify_callback(),
4139 a dummy argument can be added to their callback functions.
4140 [D. K. Smetters <smetters@parc.xerox.com>]
4142 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4143 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4145 *) Add and OPENSSL_LOAD_CONF define which will cause
4146 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4147 This allows older applications to transparently support certain
4148 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4149 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4150 load the config file and OPENSSL_add_all_algorithms_conf() which will
4151 always load it have also been added.
4154 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4155 Adjust NIDs and EVP layer.
4156 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4158 *) Config modules support in openssl utility.
4160 Most commands now load modules from the config file,
4161 though in a few (such as version) this isn't done
4162 because it couldn't be used for anything.
4164 In the case of ca and req the config file used is
4165 the same as the utility itself: that is the -config
4166 command line option can be used to specify an
4170 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4171 use "openssl_conf" if filename is NULL use default openssl config file.
4174 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4175 config section name. Add a new flag to tolerate a missing config file
4176 and move code to CONF_modules_load_file().
4179 *) Support for crypto accelerator cards from Accelerated Encryption
4180 Processing, www.aep.ie. (Use engine 'aep')
4181 The support was copied from 0.9.6c [engine] and adapted/corrected
4182 to work with the new engine framework.
4183 [AEP Inc. and Richard Levitte]
4185 *) Support for SureWare crypto accelerator cards from Baltimore
4186 Technologies. (Use engine 'sureware')
4187 The support was copied from 0.9.6c [engine] and adapted
4188 to work with the new engine framework.
4191 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4192 make the newer ENGINE framework commands for the CHIL engine work.
4193 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4195 *) Make it possible to produce shared libraries on ReliantUNIX.
4196 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4198 *) Add the configuration target debug-linux-ppro.
4199 Make 'openssl rsa' use the general key loading routines
4200 implemented in apps.c, and make those routines able to
4201 handle the key format FORMAT_NETSCAPE and the variant
4203 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4205 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4206 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4208 *) Add -keyform to rsautl, and document -engine.
4209 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4211 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4212 BIO_R_NO_SUCH_FILE error code rather than the generic
4213 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4216 *) Add new functions
4218 ERR_peek_last_error_line
4219 ERR_peek_last_error_line_data.
4220 These are similar to
4223 ERR_peek_error_line_data,
4224 but report on the latest error recorded rather than the first one
4225 still in the error queue.
4226 [Ben Laurie, Bodo Moeller]
4228 *) default_algorithms option in ENGINE config module. This allows things
4230 default_algorithms = ALL
4231 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4234 *) Prelminary ENGINE config module.
4237 *) New experimental application configuration code.
4240 *) Change the AES code to follow the same name structure as all other
4241 symmetric ciphers, and behave the same way. Move everything to
4242 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4243 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4245 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4246 [Ben Laurie and Theo de Raadt]
4248 *) Add option to output public keys in req command.
4249 [Massimiliano Pala madwolf@openca.org]
4251 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4252 (up to about 10% better than before for P-192 and P-224).
4255 *) New functions/macros
4257 SSL_CTX_set_msg_callback(ctx, cb)
4258 SSL_CTX_set_msg_callback_arg(ctx, arg)
4259 SSL_set_msg_callback(ssl, cb)
4260 SSL_set_msg_callback_arg(ssl, arg)
4262 to request calling a callback function
4264 void cb(int write_p, int version, int content_type,
4265 const void *buf, size_t len, SSL *ssl, void *arg)
4267 whenever a protocol message has been completely received
4268 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4269 protocol version according to which the SSL library interprets
4270 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4271 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4272 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4273 specification (change_cipher_spec(20), alert(21), handshake(22)).
4274 'buf' and 'len' point to the actual message, 'ssl' to the
projects / openssl.git / blob