5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) More extensive health check for DRBG checking many more failure modes.
8 New function FIPS_selftest_drbg_all() to handle every possible DRBG
9 combination: call this in fips_test_suite.
12 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
13 and POST to handle Dual EC cases.
16 *) Add support for canonical generation of DSA parameter 'g'. See
19 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
20 POST to handle HMAC cases.
23 *) Add functions FIPS_module_version() and FIPS_module_version_text()
24 to return numberical and string versions of the FIPS module number.
27 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
28 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
29 outside the validated module in the FIPS capable OpenSSL.
32 *) Minor change to DRBG entropy callback semantics. In some cases
33 there is no mutiple of the block length between min_len and
34 max_len. Allow the callback to return more than max_len bytes
35 of entropy but discard any extra: it is the callback's responsibility
36 to ensure that the extra data discarded does not impact the
37 requested amount of entropy.
40 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
41 information in FIPS186-3, SP800-57 and SP800-131A.
44 *) CCM support via EVP. Interface is very similar to GCM case except we
45 must supply all data in one chunk (i.e. no update, final) and the
46 message length must be supplied if AAD is used. Add algorithm test
50 *) Initial version of POST overhaul. Add POST callback to allow the status
51 of POST to be monitored and/or failures induced. Modify fips_test_suite
52 to use callback. Always run all selftests even if one fails.
55 *) XTS support including algorithm test driver in the fips_gcmtest program.
56 Note: this does increase the maximum key length from 32 to 64 bytes but
57 there should be no binary compatibility issues as existing applications
58 will never use XTS mode.
61 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
62 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
63 performs algorithm blocking for unapproved PRNG types. Also do not
64 set PRNG type in FIPS_mode_set(): leave this to the application.
65 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
66 the standard OpenSSL PRNG: set additional data to a date time vector.
69 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
70 This shouldn't present any incompatibility problems because applications
71 shouldn't be using these directly and any that are will need to rethink
72 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
75 *) Extensive self tests and health checking required by SP800-90 DRBG.
76 Remove strength parameter from FIPS_drbg_instantiate and always
77 instantiate at maximum supported strength.
80 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
83 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
86 *) New function DH_compute_key_padded() to compute a DH key and pad with
87 leading zeroes if needed: this complies with SP800-56A et al.
90 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
91 anything, incomplete, subject to change and largely untested at present.
94 *) Modify fipscanisteronly build option to only build the necessary object
95 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
98 *) Add experimental option FIPSSYMS to give all symbols in
99 fipscanister.o and FIPS or fips prefix. This will avoid
100 conflicts with future versions of OpenSSL. Add perl script
101 util/fipsas.pl to preprocess assembly language source files
102 and rename any affected symbols.
105 *) Add selftest checks and algorithm block of non-fips algorithms in
106 FIPS mode. Remove DES2 from selftests.
109 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
110 return internal method without any ENGINE dependencies. Add new
111 tiny fips sign and verify functions.
114 *) New build option no-ec2m to disable characteristic 2 code.
117 *) New build option "fipscanisteronly". This only builds fipscanister.o
118 and (currently) associated fips utilities. Uses the file Makefile.fips
119 instead of Makefile.org as the prototype.
122 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
123 Update fips_gcmtest to use IV generator.
126 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
127 setting output buffer to NULL. The *Final function must be
128 called although it will not retrieve any additional data. The tag
129 can be set or retrieved with a ctrl. The IV length is by default 12
130 bytes (96 bits) but can be set to an alternative value. If the IV
131 length exceeds the maximum IV length (currently 16 bytes) it cannot be
135 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
136 underlying do_cipher function handles all cipher semantics itself
137 including padding and finalisation. This is useful if (for example)
138 an ENGINE cipher handles block padding itself. The behaviour of
139 do_cipher is subtly changed if this flag is set: the return value
140 is the number of characters written to the output buffer (zero is
141 no longer an error code) or a negative error code. Also if the
142 input buffer is NULL and length 0 finalisation should be performed.
145 *) If a candidate issuer certificate is already part of the constructed
146 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
149 *) Improve forward-security support: add functions
151 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
152 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
154 for use by SSL/TLS servers; the callback function will be called whenever a
155 new session is created, and gets to decide whether the session may be
156 cached to make it resumable (return 0) or not (return 1). (As by the
157 SSL/TLS protocol specifications, the session_id sent by the server will be
158 empty to indicate that the session is not resumable; also, the server will
159 not generate RFC 4507 (RFC 5077) session tickets.)
161 A simple reasonable callback implementation is to return is_forward_secure.
162 This parameter will be set to 1 or 0 depending on the ciphersuite selected
163 by the SSL/TLS server library, indicating whether it can provide forward
165 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
167 *) Add Next Protocol Negotiation,
168 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
169 disabled with a no-npn flag to config or Configure. Code donated
171 [Adam Langley <agl@google.com> and Ben Laurie]
173 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
174 all platforms. Move ssize_t definition from e_os.h to the public
175 header file e_os2.h as it now appears in public header file cms.h
178 *) New function OPENSSL_gmtime_diff to find the difference in days
179 and seconds between two tm structures. This will be used to provide
180 additional functionality for ASN1_TIME.
183 *) New -sigopt option to the ca, req and x509 utilities. Additional
184 signature parameters can be passed using this option and in
188 *) Add RSA PSS signing function. This will generate and set the
189 appropriate AlgorithmIdentifiers for PSS based on those in the
190 corresponding EVP_MD_CTX structure. No application support yet.
193 *) Support for companion algorithm specific ASN1 signing routines.
194 New function ASN1_item_sign_ctx() signs a pre-initialised
195 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
196 the appropriate parameters.
199 *) Add new algorithm specific ASN1 verification initialisation function
200 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
201 handling will be the same no matter what EVP_PKEY_METHOD is used.
202 Add a PSS handler to support verification of PSS signatures: checked
203 against a number of sample certificates.
206 *) Add signature printing for PSS. Add PSS OIDs.
207 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
209 *) Add algorithm specific signature printing. An individual ASN1 method
210 can now print out signatures instead of the standard hex dump.
212 More complex signatures (e.g. PSS) can print out more meaningful
213 information. Include DSA version that prints out the signature
217 *) Add -trusted_first option which attempts to find certificates in the
218 trusted store even if an untrusted chain is also supplied.
221 *) Initial experimental support for explicitly trusted non-root CAs.
222 OpenSSL still tries to build a complete chain to a root but if an
223 intermediate CA has a trust setting included that is used. The first
224 setting is used: whether to trust or reject.
227 *) New -verify_name option in command line utilities to set verification
231 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
232 Add CMAC pkey methods.
235 *) Experiemental regnegotiation in s_server -www mode. If the client
236 browses /reneg connection is renegotiated. If /renegcert it is
237 renegotiated requesting a certificate.
240 *) Add an "external" session cache for debugging purposes to s_server. This
241 should help trace issues which normally are only apparent in deployed
242 multi-process servers.
245 *) Experiemental password based recipient info support for CMS library:
246 implementing RFC3211.
249 *) Split password based encryption into PBES2 and PBKDF2 functions. This
250 neatly separates the code into cipher and PBE sections and is required
251 for some algorithms that split PBES2 into separate pieces (such as
255 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
256 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
257 BIO_set_cipher() and some obscure PEM functions were changed so they
258 can now return an error. The RAND changes required a change to the
259 RAND_METHOD structure.
262 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
263 a gcc attribute to warn if the result of a function is ignored. This
264 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
265 whose return value is often ignored.
268 Changes between 1.0.0e and 1.0.1 [xx XXX xxxx]
270 *) Session-handling fixes:
271 - Fix handling of connections that are resuming with a session ID,
272 but also support Session Tickets.
273 - Fix a bug that suppressed issuing of a new ticket if the client
274 presented a ticket with an expired session.
275 - Try to set the ticket lifetime hint to something reasonable.
276 - Make tickets shorter by excluding irrelevant information.
277 - On the client side, don't ignore renewed tickets.
278 [Adam Langley, Bodo Moeller (Google)]
280 *) Fix PSK session representation.
283 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
285 This work was sponsored by Intel.
288 *) Add GCM support to TLS library. Some custom code is needed to split
289 the IV between the fixed (from PRF) and explicit (from TLS record)
290 portions. This adds all GCM ciphersuites supported by RFC5288 and
291 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
292 add a special AESGCM string for GCM only.
295 *) Expand range of ctrls for AES GCM. Permit setting invocation
296 field on decrypt and retrieval of invocation field only on encrypt.
299 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
300 As required by RFC5289 these ciphersuites cannot be used if for
301 versions of TLS earlier than 1.2.
304 *) For FIPS capable OpenSSL interpret a NULL default public key method
305 as unset and return the appopriate default but do *not* set the default.
306 This means we can return the appopriate method in applications that
307 swicth between FIPS and non-FIPS modes.
310 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
311 ENGINE is used then we cannot handle that in the FIPS module so we
312 keep original code iff non-FIPS operations are allowed.
315 *) Add -attime option to openssl verify.
316 [Peter Eckersley <pde@eff.org> and Ben Laurie]
318 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
321 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
322 FIPS EC methods unconditionally for now.
325 *) New build option no-ec2m to disable characteristic 2 code.
328 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
329 all cases can be covered as some introduce binary incompatibilities.
332 *) Redirect RSA operations to FIPS module including keygen,
333 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
336 *) Add similar low level API blocking to ciphers.
339 *) Low level digest APIs are not approved in FIPS mode: any attempt
340 to use these will cause a fatal error. Applications that *really* want
341 to use them can use the private_* version instead.
344 *) Redirect cipher operations to FIPS module for FIPS builds.
347 *) Redirect digest operations to FIPS module for FIPS builds.
350 *) Update build system to add "fips" flag which will link in fipscanister.o
351 for static and shared library builds embedding a signature if needed.
354 *) Output TLS supported curves in preference order instead of numerical
355 order. This is currently hardcoded for the highest order curves first.
356 This should be configurable so applications can judge speed vs strength.
359 *) Add TLS v1.2 server support for client authentication.
362 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
366 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
367 FIPS modules versions.
370 *) Add TLS v1.2 client side support for client authentication. Keep cache
371 of handshake records longer as we don't know the hash algorithm to use
372 until after the certificate request message is received.
375 *) Initial TLS v1.2 client support. Add a default signature algorithms
376 extension including all the algorithms we support. Parse new signature
377 format in client key exchange. Relax some ECC signing restrictions for
378 TLS v1.2 as indicated in RFC5246.
381 *) Add server support for TLS v1.2 signature algorithms extension. Switch
382 to new signature format when needed using client digest preference.
383 All server ciphersuites should now work correctly in TLS v1.2. No client
384 support yet and no support for client certificates.
387 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
388 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
389 ciphersuites. At present only RSA key exchange ciphersuites work with
390 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
391 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
392 and version checking.
395 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
396 with this defined it will not be affected by any changes to ssl internal
397 structures. Add several utility functions to allow openssl application
398 to work with OPENSSL_NO_SSL_INTERN defined.
402 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
404 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
407 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
408 elliptic curve NIST-P224 with constant-time single point multiplication on
409 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
410 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
411 flexible implementations).
413 The implementation requires support for the nonstandard type __uint128_t,
414 and so is disabled by default. To include this in your build of OpenSSL,
415 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
416 and run "make depend" (or "make update").
417 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
419 *) Permit abbreviated handshakes when renegotiating using the function
420 SSL_renegotiate_abbreviated().
421 [Robin Seggelmann <seggelmann@fh-muenster.de>]
423 *) Add call to ENGINE_register_all_complete() to
424 ENGINE_load_builtin_engines(), so some implementations get used
425 automatically instead of needing explicit application support.
428 *) Add support for TLS key exporter as described in RFC5705.
429 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
431 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
432 a few changes are required:
434 Add SSL_OP_NO_TLSv1_1 flag.
436 Update version checking logic to handle version 1.1.
437 Add explicit IV handling (ported from DTLS code).
438 Add command line options to s_client/s_server.
441 Changes between 1.0.0d and 1.0.0e [xx XXX xxxx]
443 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
444 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
445 [Kaspar Brand <ossl@velox.ch>]
447 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
448 for multi-threaded use of ECDH. (CVE-2011-3210)
449 [Adam Langley (Google)]
451 *) Fix x509_name_ex_d2i memory leak on bad inputs.
454 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
455 signature public key algorithm by using OID xref utilities instead.
456 Before this you could only use some ECC ciphersuites with SHA1 only.
459 *) Add protection against ECDSA timing attacks as mentioned in the paper
460 by Billy Bob Brumley and Nicola Tuveri, see:
462 http://eprint.iacr.org/2011/232.pdf
464 [Billy Bob Brumley and Nicola Tuveri]
466 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
468 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
469 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
471 *) Fix bug in string printing code: if *any* escaping is enabled we must
472 escape the escape character (backslash) or the resulting string is
476 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
478 *) Disable code workaround for ancient and obsolete Netscape browsers
479 and servers: an attacker can use it in a ciphersuite downgrade attack.
480 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
483 *) Fixed J-PAKE implementation error, originally discovered by
484 Sebastien Martini, further info and confirmation from Stefan
485 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
488 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
490 *) Fix extension code to avoid race conditions which can result in a buffer
491 overrun vulnerability: resumed sessions must not be modified as they can
492 be shared by multiple threads. CVE-2010-3864
495 *) Fix WIN32 build system to correctly link an ENGINE directory into
499 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
501 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
503 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
505 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
507 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
508 context. The operation can be customised via the ctrl mechanism in
509 case ENGINEs want to include additional functionality.
512 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
515 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
516 output hashes compatible with older versions of OpenSSL.
517 [Willy Weisz <weisz@vcpc.univie.ac.at>]
519 *) Fix compression algorithm handling: if resuming a session use the
520 compression algorithm of the resumed session instead of determining
521 it from client hello again. Don't allow server to change algorithm.
524 *) Add load_crls() function to apps tidying load_certs() too. Add option
525 to verify utility to allow additional CRLs to be included.
528 *) Update OCSP request code to permit adding custom headers to the request:
529 some responders need this.
532 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
534 [Julia Lawall <julia@diku.dk>]
536 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
537 needlessly dereferenced structures, used obsolete functions and
538 didn't handle all updated verify codes correctly.
541 *) Disable MD2 in the default configuration.
544 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
545 indicate the initial BIO being pushed or popped. This makes it possible
546 to determine whether the BIO is the one explicitly called or as a result
547 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
548 it handles reference counts correctly and doesn't zero out the I/O bio
549 when it is not being explicitly popped. WARNING: applications which
550 included workarounds for the old buggy behaviour will need to be modified
551 or they could free up already freed BIOs.
554 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
555 renaming to all platforms (within the 0.9.8 branch, this was
556 done conditionally on Netware platforms to avoid a name clash).
557 [Guenter <lists@gknw.net>]
559 *) Add ECDHE and PSK support to DTLS.
560 [Michael Tuexen <tuexen@fh-muenster.de>]
562 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
566 *) Add "missing" function EVP_MD_flags() (without this the only way to
567 retrieve a digest flags is by accessing the structure directly. Update
568 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
569 or cipher is registered as in the "from" argument. Print out all
570 registered digests in the dgst usage message instead of manually
571 attempting to work them out.
574 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
575 this allows the use of compression and extensions. Change default cipher
576 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
577 by default unless an application cipher string requests it.
580 *) Alter match criteria in PKCS12_parse(). It used to try to use local
581 key ids to find matching certificates and keys but some PKCS#12 files
582 don't follow the (somewhat unwritten) rules and this strategy fails.
583 Now just gather all certificates together and the first private key
584 then look for the first certificate that matches the key.
587 *) Support use of registered digest and cipher names for dgst and cipher
588 commands instead of having to add each one as a special case. So now
595 openssl dgst -sha256 foo
597 and this works for ENGINE based algorithms too.
601 *) Update Gost ENGINE to support parameter files.
602 [Victor B. Wagner <vitus@cryptocom.ru>]
604 *) Support GeneralizedTime in ca utility.
605 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
607 *) Enhance the hash format used for certificate directory links. The new
608 form uses the canonical encoding (meaning equivalent names will work
609 even if they aren't identical) and uses SHA1 instead of MD5. This form
610 is incompatible with the older format and as a result c_rehash should
611 be used to rebuild symbolic links.
614 *) Make PKCS#8 the default write format for private keys, replacing the
615 traditional format. This form is standardised, more secure and doesn't
616 include an implicit MD5 dependency.
619 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
620 committed to OpenSSL should pass this lot as a minimum.
623 *) Add session ticket override functionality for use by EAP-FAST.
624 [Jouni Malinen <j@w1.fi>]
626 *) Modify HMAC functions to return a value. Since these can be implemented
627 in an ENGINE errors can occur.
630 *) Type-checked OBJ_bsearch_ex.
633 *) Type-checked OBJ_bsearch. Also some constification necessitated
634 by type-checking. Still to come: TXT_DB, bsearch(?),
635 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
639 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
640 seconds to a tm structure directly, instead of going through OS
641 specific date routines. This avoids any issues with OS routines such
642 as the year 2038 bug. New *_adj() functions for ASN1 time structures
643 and X509_time_adj_ex() to cover the extended range. The existing
644 X509_time_adj() is still usable and will no longer have any date issues.
647 *) Delta CRL support. New use deltas option which will attempt to locate
648 and search any appropriate delta CRLs available.
650 This work was sponsored by Google.
653 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
654 code and add additional score elements. Validate alternate CRL paths
655 as part of the CRL checking and indicate a new error "CRL path validation
656 error" in this case. Applications wanting additional details can use
657 the verify callback and check the new "parent" field. If this is not
658 NULL CRL path validation is taking place. Existing applications wont
659 see this because it requires extended CRL support which is off by
662 This work was sponsored by Google.
665 *) Support for freshest CRL extension.
667 This work was sponsored by Google.
670 *) Initial indirect CRL support. Currently only supported in the CRLs
671 passed directly and not via lookup. Process certificate issuer
672 CRL entry extension and lookup CRL entries by bother issuer name
673 and serial number. Check and process CRL issuer entry in IDP extension.
675 This work was sponsored by Google.
678 *) Add support for distinct certificate and CRL paths. The CRL issuer
679 certificate is validated separately in this case. Only enabled if
680 an extended CRL support flag is set: this flag will enable additional
681 CRL functionality in future.
683 This work was sponsored by Google.
686 *) Add support for policy mappings extension.
688 This work was sponsored by Google.
691 *) Fixes to pathlength constraint, self issued certificate handling,
692 policy processing to align with RFC3280 and PKITS tests.
694 This work was sponsored by Google.
697 *) Support for name constraints certificate extension. DN, email, DNS
698 and URI types are currently supported.
700 This work was sponsored by Google.
703 *) To cater for systems that provide a pointer-based thread ID rather
704 than numeric, deprecate the current numeric thread ID mechanism and
705 replace it with a structure and associated callback type. This
706 mechanism allows a numeric "hash" to be extracted from a thread ID in
707 either case, and on platforms where pointers are larger than 'long',
708 mixing is done to help ensure the numeric 'hash' is usable even if it
709 can't be guaranteed unique. The default mechanism is to use "&errno"
710 as a pointer-based thread ID to distinguish between threads.
712 Applications that want to provide their own thread IDs should now use
713 CRYPTO_THREADID_set_callback() to register a callback that will call
714 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
716 Note that ERR_remove_state() is now deprecated, because it is tied
717 to the assumption that thread IDs are numeric. ERR_remove_state(0)
718 to free the current thread's error state should be replaced by
719 ERR_remove_thread_state(NULL).
721 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
722 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
723 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
724 application was previously providing a numeric thread callback that
725 was inappropriate for distinguishing threads, then uniqueness might
726 have been obtained with &errno that happened immediately in the
727 intermediate development versions of OpenSSL; this is no longer the
728 case, the numeric thread callback will now override the automatic use
730 [Geoff Thorpe, with help from Bodo Moeller]
732 *) Initial support for different CRL issuing certificates. This covers a
733 simple case where the self issued certificates in the chain exist and
734 the real CRL issuer is higher in the existing chain.
736 This work was sponsored by Google.
739 *) Removed effectively defunct crypto/store from the build.
742 *) Revamp of STACK to provide stronger type-checking. Still to come:
743 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
744 ASN1_STRING, CONF_VALUE.
747 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
748 RAM on SSL connections. This option can save about 34k per idle SSL.
751 *) Revamp of LHASH to provide stronger type-checking. Still to come:
752 STACK, TXT_DB, bsearch, qsort.
755 *) Initial support for Cryptographic Message Syntax (aka CMS) based
756 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
757 support for data, signedData, compressedData, digestedData and
758 encryptedData, envelopedData types included. Scripts to check against
759 RFC4134 examples draft and interop and consistency checks of many
760 content types and variants.
763 *) Add options to enc utility to support use of zlib compression BIO.
766 *) Extend mk1mf to support importing of options and assembly language
767 files from Configure script, currently only included in VC-WIN32.
768 The assembly language rules can now optionally generate the source
769 files from the associated perl scripts.
772 *) Implement remaining functionality needed to support GOST ciphersuites.
773 Interop testing has been performed using CryptoPro implementations.
774 [Victor B. Wagner <vitus@cryptocom.ru>]
776 *) s390x assembler pack.
779 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
783 *) Implement Opaque PRF Input TLS extension as specified in
784 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
785 official specification yet and no extension type assignment by
786 IANA exists, this extension (for now) will have to be explicitly
787 enabled when building OpenSSL by providing the extension number
788 to use. For example, specify an option
790 -DTLSEXT_TYPE_opaque_prf_input=0x9527
792 to the "config" or "Configure" script to enable the extension,
793 assuming extension number 0x9527 (which is a completely arbitrary
794 and unofficial assignment based on the MD5 hash of the Internet
795 Draft). Note that by doing so, you potentially lose
796 interoperability with other TLS implementations since these might
797 be using the same extension number for other purposes.
799 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
800 opaque PRF input value to use in the handshake. This will create
801 an interal copy of the length-'len' string at 'src', and will
802 return non-zero for success.
804 To get more control and flexibility, provide a callback function
807 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
808 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
812 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
815 Callback function 'cb' will be called in handshakes, and is
816 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
817 Argument 'arg' is for application purposes (the value as given to
818 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
819 be provided to the callback function). The callback function
820 has to return non-zero to report success: usually 1 to use opaque
821 PRF input just if possible, or 2 to enforce use of the opaque PRF
822 input. In the latter case, the library will abort the handshake
823 if opaque PRF input is not successfully negotiated.
825 Arguments 'peerinput' and 'len' given to the callback function
826 will always be NULL and 0 in the case of a client. A server will
827 see the client's opaque PRF input through these variables if
828 available (NULL and 0 otherwise). Note that if the server
829 provides an opaque PRF input, the length must be the same as the
830 length of the client's opaque PRF input.
832 Note that the callback function will only be called when creating
833 a new session (session resumption can resume whatever was
834 previously negotiated), and will not be called in SSL 2.0
835 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
836 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
837 for applications that need to enforce opaque PRF input.
841 *) Update ssl code to support digests other than SHA1+MD5 for handshake
844 [Victor B. Wagner <vitus@cryptocom.ru>]
846 *) Add RFC4507 support to OpenSSL. This includes the corrections in
847 RFC4507bis. The encrypted ticket format is an encrypted encoded
848 SSL_SESSION structure, that way new session features are automatically
851 If a client application caches session in an SSL_SESSION structure
852 support is transparent because tickets are now stored in the encoded
855 The SSL_CTX structure automatically generates keys for ticket
856 protection in servers so again support should be possible
857 with no application modification.
859 If a client or server wishes to disable RFC4507 support then the option
860 SSL_OP_NO_TICKET can be set.
862 Add a TLS extension debugging callback to allow the contents of any client
863 or server extensions to be examined.
865 This work was sponsored by Google.
868 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
869 OpenSSL should now compile cleanly on gcc 4.2
870 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
872 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
873 support including streaming MAC support: this is required for GOST
875 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
877 *) Add option -stream to use PKCS#7 streaming in smime utility. New
878 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
879 to output in BER and PEM format.
882 *) Experimental support for use of HMAC via EVP_PKEY interface. This
883 allows HMAC to be handled via the EVP_DigestSign*() interface. The
884 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
885 ENGINE support for HMAC keys which are unextractable. New -mac and
886 -macopt options to dgst utility.
889 *) New option -sigopt to dgst utility. Update dgst to use
890 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
891 alternative signing paramaters such as X9.31 or PSS in the dgst
895 *) Change ssl_cipher_apply_rule(), the internal function that does
896 the work each time a ciphersuite string requests enabling
897 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
898 removing ("!foo+bar") a class of ciphersuites: Now it maintains
899 the order of disabled ciphersuites such that those ciphersuites
900 that most recently went from enabled to disabled not only stay
901 in order with respect to each other, but also have higher priority
902 than other disabled ciphersuites the next time ciphersuites are
905 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
906 the same ciphersuites as with "HIGH" alone, but in a specific
907 order where the PSK ciphersuites come first (since they are the
908 most recently disabled ciphersuites when "HIGH" is parsed).
910 Also, change ssl_create_cipher_list() (using this new
911 funcionality) such that between otherwise identical
912 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
916 *) Change ssl_create_cipher_list() so that it automatically
917 arranges the ciphersuites in reasonable order before starting
918 to process the rule string. Thus, the definition for "DEFAULT"
919 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
920 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
921 This makes it much easier to arrive at a reasonable default order
922 in applications for which anonymous ciphers are OK (meaning
923 that you can't actually use DEFAULT).
924 [Bodo Moeller; suggested by Victor Duchovni]
926 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
927 processing) into multiple integers instead of setting
928 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
929 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
930 (These masks as well as the individual bit definitions are hidden
931 away into the non-exported interface ssl/ssl_locl.h, so this
932 change to the definition of the SSL_CIPHER structure shouldn't
933 affect applications.) This give us more bits for each of these
934 categories, so there is no longer a need to coagulate AES128 and
935 AES256 into a single algorithm bit, and to coagulate Camellia128
936 and Camellia256 into a single algorithm bit, which has led to all
939 Thus, among other things, the kludge introduced in 0.9.7m and
940 0.9.8e for masking out AES256 independently of AES128 or masking
941 out Camellia256 independently of AES256 is not needed here in 0.9.9.
943 With the change, we also introduce new ciphersuite aliases that
944 so far were missing: "AES128", "AES256", "CAMELLIA128", and
948 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
949 Use the leftmost N bytes of the signature input if the input is
950 larger than the prime q (with N being the size in bytes of q).
953 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
954 it yet and it is largely untested.
957 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
960 *) Initial incomplete changes to avoid need for function casts in OpenSSL
961 some compilers (gcc 4.2 and later) reject their use. Safestack is
962 reimplemented. Update ASN1 to avoid use of legacy functions.
965 *) Win32/64 targets are linked with Winsock2.
968 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
969 to external functions. This can be used to increase CRL handling
970 efficiency especially when CRLs are very large by (for example) storing
971 the CRL revoked certificates in a database.
974 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
975 new CRLs added to a directory can be used. New command line option
976 -verify_return_error to s_client and s_server. This causes real errors
977 to be returned by the verify callback instead of carrying on no matter
978 what. This reflects the way a "real world" verify callback would behave.
981 *) GOST engine, supporting several GOST algorithms and public key formats.
982 Kindly donated by Cryptocom.
985 *) Partial support for Issuing Distribution Point CRL extension. CRLs
986 partitioned by DP are handled but no indirect CRL or reason partitioning
987 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
988 selected via a scoring technique which handles IDP and AKID in CRLs.
991 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
992 will ultimately be used for all verify operations: this will remove the
993 X509_STORE dependency on certificate verification and allow alternative
994 lookup methods. X509_STORE based implementations of these two callbacks.
997 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
998 Modify get_crl() to find a valid (unexpired) CRL if possible.
1001 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1002 this would be called X509_CRL_cmp() but that name is already used by
1003 a function that just compares CRL issuer names. Cache several CRL
1004 extensions in X509_CRL structure and cache CRLDP in X509.
1007 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1008 this maps equivalent X509_NAME structures into a consistent structure.
1009 Name comparison can then be performed rapidly using memcmp().
1012 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1016 *) Allow digests to supply their own micalg string for S/MIME type using
1017 the ctrl EVP_MD_CTRL_MICALG.
1020 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1021 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1022 ctrl. It can then customise the structure before and/or after signing
1026 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1027 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1028 to free up any added signature OIDs.
1031 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1032 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1033 digest and cipher tables. New options added to openssl utility:
1034 list-message-digest-algorithms and list-cipher-algorithms.
1037 *) Change the array representation of binary polynomials: the list
1038 of degrees of non-zero coefficients is now terminated with -1.
1039 Previously it was terminated with 0, which was also part of the
1040 value; thus, the array representation was not applicable to
1041 polynomials where t^0 has coefficient zero. This change makes
1042 the array representation useful in a more general context.
1045 *) Various modifications and fixes to SSL/TLS cipher string
1046 handling. For ECC, the code now distinguishes between fixed ECDH
1047 with RSA certificates on the one hand and with ECDSA certificates
1048 on the other hand, since these are separate ciphersuites. The
1049 unused code for Fortezza ciphersuites has been removed.
1051 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1052 (not "ECDHE"). For consistency with the code for DH
1053 certificates, use of ECDH certificates is now considered ECDH
1054 authentication, not RSA or ECDSA authentication (the latter is
1055 merely the CA's signing algorithm and not actively used in the
1058 The temporary ciphersuite alias "ECCdraft" is no longer
1059 available, and ECC ciphersuites are no longer excluded from "ALL"
1060 and "DEFAULT". The following aliases now exist for RFC 4492
1061 ciphersuites, most of these by analogy with the DH case:
1063 kECDHr - ECDH cert, signed with RSA
1064 kECDHe - ECDH cert, signed with ECDSA
1065 kECDH - ECDH cert (signed with either RSA or ECDSA)
1066 kEECDH - ephemeral ECDH
1067 ECDH - ECDH cert or ephemeral ECDH
1073 AECDH - anonymous ECDH
1074 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1078 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1079 Use correct micalg parameters depending on digest(s) in signed message.
1082 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1083 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1086 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1087 an engine to register a method. Add ENGINE lookups for methods and
1088 functional reference processing.
1091 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1092 EVP_{Sign,Verify}* which allow an application to customise the signature
1096 *) New -resign option to smime utility. This adds one or more signers
1097 to an existing PKCS#7 signedData structure. Also -md option to use an
1098 alternative message digest algorithm for signing.
1101 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1102 create PKCS7 structures containing multiple signers. Update smime
1103 application to support multiple signers.
1106 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1110 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1111 Reorganize PBE internals to lookup from a static table using NIDs,
1112 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1113 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1114 PRF which will be automatically used with PBES2.
1117 *) Replace the algorithm specific calls to generate keys in "req" with the
1121 *) Update PKCS#7 enveloped data routines to use new API. This is now
1122 supported by any public key method supporting the encrypt operation. A
1123 ctrl is added to allow the public key algorithm to examine or modify
1124 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1128 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1129 a default digest type to use. In most cases this will be SHA1 but some
1130 algorithms (such as GOST) need to specify an alternative digest. The
1131 return value indicates how strong the prefernce is 1 means optional and
1132 2 is mandatory (that is it is the only supported type). Modify
1133 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1134 use the default md. Update openssl utilities to use the default digest
1135 type for signing if it is not explicitly indicated.
1138 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1139 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1140 signing method from the key type. This effectively removes the link
1141 between digests and public key types.
1144 *) Add an OID cross reference table and utility functions. Its purpose is to
1145 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1146 rsaEncryption. This will allow some of the algorithm specific hackery
1147 needed to use the correct OID to be removed.
1150 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1151 structures for PKCS7_sign(). They are now set up by the relevant public
1155 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1158 *) Add support for key derivation (agreement) in the API, DH method and
1162 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1163 public and private key formats. As a side effect these add additional
1164 command line functionality not previously available: DSA signatures can be
1165 generated and verified using pkeyutl and DH key support and generation in
1170 [Oliver Tappe <zooey@hirschkaefer.de>]
1172 *) New make target "install_html_docs" installs HTML renditions of the
1174 [Oliver Tappe <zooey@hirschkaefer.de>]
1176 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1177 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1178 support key and parameter generation and add initial key generation
1179 functionality for RSA.
1182 *) Add functions for main EVP_PKEY_method operations. The undocumented
1183 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1184 EVP_PKEY_{encrypt,decrypt}_old.
1187 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1188 key API, doesn't do much yet.
1191 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1192 public key algorithms. New option to openssl utility:
1193 "list-public-key-algorithms" to print out info.
1196 *) Implement the Supported Elliptic Curves Extension for
1197 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1200 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1201 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1204 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1205 utilities such as rsa, dsa, dsaparam etc except they process any key
1209 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1210 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1211 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1215 *) Initial support for pluggable public key ASN1.
1216 De-spaghettify the public key ASN1 handling. Move public and private
1217 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1218 algorithm specific handling to a single module within the relevant
1219 algorithm directory. Add functions to allow (near) opaque processing
1220 of public and private key structures.
1223 *) Implement the Supported Point Formats Extension for
1224 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1227 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1228 for the psk identity [hint] and the psk callback functions to the
1229 SSL_SESSION, SSL and SSL_CTX structure.
1232 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1236 SSL_CTX_use_psk_identity_hint
1237 SSL_get_psk_identity_hint
1238 SSL_get_psk_identity
1239 SSL_use_psk_identity_hint
1241 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1243 *) Add RFC 3161 compliant time stamp request creation, response generation
1244 and response verification functionality.
1245 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1247 *) Add initial support for TLS extensions, specifically for the server_name
1248 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1249 have new members for a host name. The SSL data structure has an
1250 additional member SSL_CTX *initial_ctx so that new sessions can be
1251 stored in that context to allow for session resumption, even after the
1252 SSL has been switched to a new SSL_CTX in reaction to a client's
1253 server_name extension.
1255 New functions (subject to change):
1257 SSL_get_servername()
1258 SSL_get_servername_type()
1261 New CTRL codes and macros (subject to change):
1263 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1264 - SSL_CTX_set_tlsext_servername_callback()
1265 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1266 - SSL_CTX_set_tlsext_servername_arg()
1267 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1269 openssl s_client has a new '-servername ...' option.
1271 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1272 '-key2 ...', '-servername_fatal' (subject to change). This allows
1273 testing the HostName extension for a specific single host name ('-cert'
1274 and '-key' remain fallbacks for handshakes without HostName
1275 negotiation). If the unrecogninzed_name alert has to be sent, this by
1276 default is a warning; it becomes fatal with the '-servername_fatal'
1279 [Peter Sylvester, Remy Allais, Christophe Renou]
1281 *) Whirlpool hash implementation is added.
1284 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1285 bn(64,32). Because of instruction set limitations it doesn't have
1286 any negative impact on performance. This was done mostly in order
1287 to make it possible to share assembler modules, such as bn_mul_mont
1288 implementations, between 32- and 64-bit builds without hassle.
1291 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1292 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1296 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1297 dedicated Montgomery multiplication procedure, is introduced.
1298 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1299 "64-bit" performance on certain 32-bit targets.
1302 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1303 in SSL structures. New SSL ctrl to set maximum send fragment size.
1304 Save memory by seeting the I/O buffer sizes dynamically instead of
1305 using the maximum available value.
1308 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1309 in addition to the text details.
1312 *) Very, very preliminary EXPERIMENTAL support for printing of general
1313 ASN1 structures. This currently produces rather ugly output and doesn't
1314 handle several customised structures at all.
1317 *) Integrated support for PVK file format and some related formats such
1318 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1319 these in the 'rsa' and 'dsa' utilities.
1322 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1325 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1326 place for the (very old) "NETSCAPE" format certificates which are now
1327 handled using new ASN1 code equivalents.
1330 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1331 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1332 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1335 *) Modify CRL distribution points extension code to print out previously
1336 unsupported fields. Enhance extension setting code to allow setting of
1340 *) Add print and set support for Issuing Distribution Point CRL extension.
1343 *) Change 'Configure' script to enable Camellia by default.
1346 Changes between 0.9.8r and 0.9.8s [xx XXX xxxx]
1348 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1349 for multi-threaded use of ECDH.
1350 [Adam Langley (Google)]
1352 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1355 *) Add protection against ECDSA timing attacks as mentioned in the paper
1356 by Billy Bob Brumley and Nicola Tuveri, see:
1358 http://eprint.iacr.org/2011/232.pdf
1360 [Billy Bob Brumley and Nicola Tuveri]
1362 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1364 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1365 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1367 *) Fix bug in string printing code: if *any* escaping is enabled we must
1368 escape the escape character (backslash) or the resulting string is
1372 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1374 *) Disable code workaround for ancient and obsolete Netscape browsers
1375 and servers: an attacker can use it in a ciphersuite downgrade attack.
1376 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1379 *) Fixed J-PAKE implementation error, originally discovered by
1380 Sebastien Martini, further info and confirmation from Stefan
1381 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1384 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1386 *) Fix extension code to avoid race conditions which can result in a buffer
1387 overrun vulnerability: resumed sessions must not be modified as they can
1388 be shared by multiple threads. CVE-2010-3864
1391 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1394 *) Don't reencode certificate when calculating signature: cache and use
1395 the original encoding instead. This makes signature verification of
1396 some broken encodings work correctly.
1399 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1400 is also one of the inputs.
1401 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1403 *) Don't repeatedly append PBE algorithms to table if they already exist.
1404 Sort table on each new add. This effectively makes the table read only
1405 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1409 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1411 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1414 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1415 access or freeing data twice (CVE-2010-0742)
1416 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1418 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1419 common in certificates and some applications which only call
1420 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1424 Reduce copying into .apps and .test in makevms.com
1425 Don't try to use blank CA certificate in CA.com
1426 Allow use of C files from original directories in maketests.com
1427 [Steven M. Schweda" <sms@antinode.info>]
1429 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1431 *) When rejecting SSL/TLS records due to an incorrect version number, never
1432 update s->server with a new major version number. As of
1433 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1434 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1435 the previous behavior could result in a read attempt at NULL when
1436 receiving specific incorrect SSL/TLS records once record payload
1437 protection is active. (CVE-2010-0740)
1438 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1440 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1441 could be crashed if the relevant tables were not present (e.g. chrooted).
1442 [Tomas Hoger <thoger@redhat.com>]
1444 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1446 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1447 [Martin Olsson, Neel Mehta]
1449 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1450 accommodate for stack sorting, always a write lock!).
1453 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1454 excessive delays in the RAND_poll(): over a minute. As a workaround
1455 include a time check in the inner Heap32Next loop too.
1458 *) The code that handled flushing of data in SSL/TLS originally used the
1459 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1460 the problem outlined in PR#1949. The fix suggested there however can
1461 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1462 of Apache). So instead simplify the code to flush unconditionally.
1463 This should be fine since flushing with no data to flush is a no op.
1466 *) Handle TLS versions 2.0 and later properly and correctly use the
1467 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1468 off ancient servers have a habit of sticking around for a while...
1471 *) Modify compression code so it frees up structures without using the
1472 ex_data callbacks. This works around a problem where some applications
1473 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1474 restarting) then use compression (e.g. SSL with compression) later.
1475 This results in significant per-connection memory leaks and
1476 has caused some security issues including CVE-2008-1678 and
1480 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1481 change when encrypting or decrypting.
1484 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1485 connect and renegotiate with servers which do not support RI.
1486 Until RI is more widely deployed this option is enabled by default.
1489 *) Add "missing" ssl ctrls to clear options and mode.
1492 *) If client attempts to renegotiate and doesn't support RI respond with
1493 a no_renegotiation alert as required by RFC5746. Some renegotiating
1494 TLS clients will continue a connection gracefully when they receive
1495 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1496 waiting for a server hello which it will never receive. Now we treat a
1497 received no_renegotiation alert as a fatal error. This is because
1498 applications requesting a renegotiation might well expect it to succeed
1499 and would have no code in place to handle the server denying it so the
1500 only safe thing to do is to terminate the connection.
1503 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1504 peer supports secure renegotiation and 0 otherwise. Print out peer
1505 renegotiation support in s_client/s_server.
1508 *) Replace the highly broken and deprecated SPKAC certification method with
1509 the updated NID creation version. This should correctly handle UTF8.
1512 *) Implement RFC5746. Re-enable renegotiation but require the extension
1513 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1514 turns out to be a bad idea. It has been replaced by
1515 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1516 SSL_CTX_set_options(). This is really not recommended unless you
1517 know what you are doing.
1518 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1520 *) Fixes to stateless session resumption handling. Use initial_ctx when
1521 issuing and attempting to decrypt tickets in case it has changed during
1522 servername handling. Use a non-zero length session ID when attempting
1523 stateless session resumption: this makes it possible to determine if
1524 a resumption has occurred immediately after receiving server hello
1525 (several places in OpenSSL subtly assume this) instead of later in
1529 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1530 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1531 fixes for a few places where the return code is not checked
1533 [Julia Lawall <julia@diku.dk>]
1535 *) Add --strict-warnings option to Configure script to include devteam
1536 warnings in other configurations.
1539 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1540 makes it possible to install openssl libraries in locations which
1541 have names other than "lib", for example "/usr/lib64" which some
1543 [Steve Henson, based on patch from Jeremy Utley]
1545 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1546 X690 8.9.12 and can produce some misleading textual output of OIDs.
1547 [Steve Henson, reported by Dan Kaminsky]
1549 *) Delete MD2 from algorithm tables. This follows the recommendation in
1550 several standards that it is not used in new applications due to
1551 several cryptographic weaknesses. For binary compatibility reasons
1552 the MD2 API is still compiled in by default.
1555 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1559 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1560 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1562 [Guenter <lists@gknw.net>]
1564 *) Fix the server certificate chain building code to use X509_verify_cert(),
1565 it used to have an ad-hoc builder which was unable to cope with anything
1566 other than a simple chain.
1567 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1569 *) Don't check self signed certificate signatures in X509_verify_cert()
1570 by default (a flag can override this): it just wastes time without
1571 adding any security. As a useful side effect self signed root CAs
1572 with non-FIPS digests are now usable in FIPS mode.
1575 *) In dtls1_process_out_of_seq_message() the check if the current message
1576 is already buffered was missing. For every new message was memory
1577 allocated, allowing an attacker to perform an denial of service attack
1578 with sending out of seq handshake messages until there is no memory
1579 left. Additionally every future messege was buffered, even if the
1580 sequence number made no sense and would be part of another handshake.
1581 So only messages with sequence numbers less than 10 in advance will be
1582 buffered. (CVE-2009-1378)
1583 [Robin Seggelmann, discovered by Daniel Mentz]
1585 *) Records are buffered if they arrive with a future epoch to be
1586 processed after finishing the corresponding handshake. There is
1587 currently no limitation to this buffer allowing an attacker to perform
1588 a DOS attack with sending records with future epochs until there is no
1589 memory left. This patch adds the pqueue_size() function to detemine
1590 the size of a buffer and limits the record buffer to 100 entries.
1592 [Robin Seggelmann, discovered by Daniel Mentz]
1594 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1595 parent structure is freed. (CVE-2009-1379)
1598 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1599 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1602 [Ilya O. <vrghost@gmail.com>]
1604 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1606 *) Disable renegotiation completely - this fixes a severe security
1607 problem (CVE-2009-3555) at the cost of breaking all
1608 renegotiation. Renegotiation can be re-enabled by setting
1609 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1610 run-time. This is really not recommended unless you know what
1614 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1616 *) Don't set val to NULL when freeing up structures, it is freed up by
1617 underlying code. If sizeof(void *) > sizeof(long) this can result in
1618 zeroing past the valid field. (CVE-2009-0789)
1619 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1621 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1622 checked correctly. This would allow some invalid signed attributes to
1623 appear to verify correctly. (CVE-2009-0591)
1624 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1626 *) Reject UniversalString and BMPString types with invalid lengths. This
1627 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1628 a legal length. (CVE-2009-0590)
1631 *) Set S/MIME signing as the default purpose rather than setting it
1632 unconditionally. This allows applications to override it at the store
1636 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1637 to handle some structures.
1640 *) Improve efficiency of mem_gets: don't search whole buffer each time
1642 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1644 *) New -hex option for openssl rand.
1647 *) Print out UTF8String and NumericString when parsing ASN1.
1650 *) Support NumericString type for name components.
1653 *) Allow CC in the environment to override the automatically chosen
1654 compiler. Note that nothing is done to ensure flags work with the
1658 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1660 *) Properly check EVP_VerifyFinal() and similar return values
1662 [Ben Laurie, Bodo Moeller, Google Security Team]
1664 *) Enable TLS extensions by default.
1667 *) Allow the CHIL engine to be loaded, whether the application is
1668 multithreaded or not. (This does not release the developer from the
1669 obligation to set up the dynamic locking callbacks.)
1670 [Sander Temme <sander@temme.net>]
1672 *) Use correct exit code if there is an error in dgst command.
1673 [Steve Henson; problem pointed out by Roland Dirlewanger]
1675 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1676 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1679 *) Add experimental JPAKE support, including demo authentication in
1680 s_client and s_server.
1683 *) Set the comparison function in v3_addr_canonize().
1684 [Rob Austein <sra@hactrn.net>]
1686 *) Add support for XMPP STARTTLS in s_client.
1687 [Philip Paeps <philip@freebsd.org>]
1689 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1690 to ensure that even with this option, only ciphersuites in the
1691 server's preference list will be accepted. (Note that the option
1692 applies only when resuming a session, so the earlier behavior was
1693 just about the algorithm choice for symmetric cryptography.)
1696 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1698 *) Fix NULL pointer dereference if a DTLS server received
1699 ChangeCipherSpec as first record (CVE-2009-1386).
1702 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1703 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1706 *) The fix in 0.9.8c that supposedly got rid of unsafe
1707 double-checked locking was incomplete for RSA blinding,
1708 addressing just one layer of what turns out to have been
1709 doubly unsafe triple-checked locking.
1711 So now fix this for real by retiring the MONT_HELPER macro
1712 in crypto/rsa/rsa_eay.c.
1714 [Bodo Moeller; problem pointed out by Marius Schilder]
1716 *) Various precautionary measures:
1718 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1720 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1721 (NB: This would require knowledge of the secret session ticket key
1722 to exploit, in which case you'd be SOL either way.)
1724 - Change bn_nist.c so that it will properly handle input BIGNUMs
1725 outside the expected range.
1727 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1730 [Neel Mehta, Bodo Moeller]
1732 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1733 the load fails. Useful for distros.
1734 [Ben Laurie and the FreeBSD team]
1736 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1739 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1742 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1744 This work was sponsored by Logica.
1747 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1748 keystores. Support for SSL/TLS client authentication too.
1749 Not compiled unless enable-capieng specified to Configure.
1751 This work was sponsored by Logica.
1754 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1755 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1756 attribute creation routines such as certifcate requests and PKCS#12
1760 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1762 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1763 handshake which could lead to a cilent crash as found using the
1764 Codenomicon TLS test suite (CVE-2008-1672)
1765 [Steve Henson, Mark Cox]
1767 *) Fix double free in TLS server name extensions which could lead to
1768 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1771 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1773 Clear the error queue to ensure that error entries left from
1774 older function calls do not interfere with the correct operation.
1775 [Lutz Jaenicke, Erik de Castro Lopo]
1777 *) Remove root CA certificates of commercial CAs:
1779 The OpenSSL project does not recommend any specific CA and does not
1780 have any policy with respect to including or excluding any CA.
1781 Therefore it does not make any sense to ship an arbitrary selection
1782 of root CA certificates with the OpenSSL software.
1785 *) RSA OAEP patches to fix two separate invalid memory reads.
1786 The first one involves inputs when 'lzero' is greater than
1787 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1788 before the beginning of from). The second one involves inputs where
1789 the 'db' section contains nothing but zeroes (there is a one-byte
1790 invalid read after the end of 'db').
1791 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1793 *) Partial backport from 0.9.9-dev:
1795 Introduce bn_mul_mont (dedicated Montgomery multiplication
1796 procedure) as a candidate for BIGNUM assembler implementation.
1797 While 0.9.9-dev uses assembler for various architectures, only
1798 x86_64 is available by default here in the 0.9.8 branch, and
1799 32-bit x86 is available through a compile-time setting.
1801 To try the 32-bit x86 assembler implementation, use Configure
1802 option "enable-montasm" (which exists only for this backport).
1804 As "enable-montasm" for 32-bit x86 disclaims code stability
1805 anyway, in this constellation we activate additional code
1806 backported from 0.9.9-dev for further performance improvements,
1807 namely BN_from_montgomery_word. (To enable this otherwise,
1808 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1810 [Andy Polyakov (backport partially by Bodo Moeller)]
1812 *) Add TLS session ticket callback. This allows an application to set
1813 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1814 values. This is useful for key rollover for example where several key
1815 sets may exist with different names.
1818 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1819 This was broken until now in 0.9.8 releases, such that the only way
1820 a registered ENGINE could be used (assuming it initialises
1821 successfully on the host) was to explicitly set it as the default
1822 for the relevant algorithms. This is in contradiction with 0.9.7
1823 behaviour and the documentation. With this fix, when an ENGINE is
1824 registered into a given algorithm's table of implementations, the
1825 'uptodate' flag is reset so that auto-discovery will be used next
1826 time a new context for that algorithm attempts to select an
1828 [Ian Lister (tweaked by Geoff Thorpe)]
1830 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1831 implemention in the following ways:
1833 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1836 Lack of BER streaming support means one pass streaming processing is
1837 only supported if data is detached: setting the streaming flag is
1838 ignored for embedded content.
1840 CMS support is disabled by default and must be explicitly enabled
1841 with the enable-cms configuration option.
1844 *) Update the GMP engine glue to do direct copies between BIGNUM and
1845 mpz_t when openssl and GMP use the same limb size. Otherwise the
1846 existing "conversion via a text string export" trick is still used.
1847 [Paul Sheer <paulsheer@gmail.com>]
1849 *) Zlib compression BIO. This is a filter BIO which compressed and
1850 uncompresses any data passed through it.
1853 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1854 RFC3394 compatible AES key wrapping.
1857 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1858 sets string data without copying. X509_ALGOR_set0() and
1859 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1860 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1861 from an X509_ATTRIBUTE structure optionally checking it occurs only
1862 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1866 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1867 to get the expected BN_FLG_CONSTTIME behavior.
1868 [Bodo Moeller (Google)]
1872 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1873 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1874 - added some more tests to do_tests.pl
1875 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1876 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1877 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1878 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1879 - various changes to netware.pl to enable gcc-cross builds on Win32
1881 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1882 - various changes to fix missing prototype warnings
1883 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1884 - added AES, WHIRLPOOL and CPUID assembler code to build files
1885 - added missing AES assembler make rules to mk1mf.pl
1886 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1887 [Guenter Knauf <eflash@gmx.net>]
1889 *) Implement certificate status request TLS extension defined in RFC3546.
1890 A client can set the appropriate parameters and receive the encoded
1891 OCSP response via a callback. A server can query the supplied parameters
1892 and set the encoded OCSP response in the callback. Add simplified examples
1893 to s_client and s_server.
1896 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1898 *) Fix various bugs:
1899 + Binary incompatibility of ssl_ctx_st structure
1900 + DTLS interoperation with non-compliant servers
1901 + Don't call get_session_cb() without proposed session
1902 + Fix ia64 assembler code
1903 [Andy Polyakov, Steve Henson]
1905 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1907 *) DTLS Handshake overhaul. There were longstanding issues with
1908 OpenSSL DTLS implementation, which were making it impossible for
1909 RFC 4347 compliant client to communicate with OpenSSL server.
1910 Unfortunately just fixing these incompatibilities would "cut off"
1911 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1912 server keeps tolerating non RFC compliant syntax. The opposite is
1913 not true, 0.9.8f client can not communicate with earlier server.
1914 This update even addresses CVE-2007-4995.
1917 *) Changes to avoid need for function casts in OpenSSL: some compilers
1918 (gcc 4.2 and later) reject their use.
1919 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1922 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1923 RFC4507bis. The encrypted ticket format is an encrypted encoded
1924 SSL_SESSION structure, that way new session features are automatically
1927 If a client application caches session in an SSL_SESSION structure
1928 support is transparent because tickets are now stored in the encoded
1931 The SSL_CTX structure automatically generates keys for ticket
1932 protection in servers so again support should be possible
1933 with no application modification.
1935 If a client or server wishes to disable RFC4507 support then the option
1936 SSL_OP_NO_TICKET can be set.
1938 Add a TLS extension debugging callback to allow the contents of any client
1939 or server extensions to be examined.
1941 This work was sponsored by Google.
1944 *) Add initial support for TLS extensions, specifically for the server_name
1945 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1946 have new members for a host name. The SSL data structure has an
1947 additional member SSL_CTX *initial_ctx so that new sessions can be
1948 stored in that context to allow for session resumption, even after the
1949 SSL has been switched to a new SSL_CTX in reaction to a client's
1950 server_name extension.
1952 New functions (subject to change):
1954 SSL_get_servername()
1955 SSL_get_servername_type()
1958 New CTRL codes and macros (subject to change):
1960 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1961 - SSL_CTX_set_tlsext_servername_callback()
1962 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1963 - SSL_CTX_set_tlsext_servername_arg()
1964 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1966 openssl s_client has a new '-servername ...' option.
1968 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1969 '-key2 ...', '-servername_fatal' (subject to change). This allows
1970 testing the HostName extension for a specific single host name ('-cert'
1971 and '-key' remain fallbacks for handshakes without HostName
1972 negotiation). If the unrecogninzed_name alert has to be sent, this by
1973 default is a warning; it becomes fatal with the '-servername_fatal'
1976 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1978 *) Add AES and SSE2 assembly language support to VC++ build.
1981 *) Mitigate attack on final subtraction in Montgomery reduction.
1984 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1985 (which previously caused an internal error).
1988 *) Squeeze another 10% out of IGE mode when in != out.
1991 *) AES IGE mode speedup.
1992 [Dean Gaudet (Google)]
1994 *) Add the Korean symmetric 128-bit cipher SEED (see
1995 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1996 add SEED ciphersuites from RFC 4162:
1998 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1999 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2000 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2001 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2003 To minimize changes between patchlevels in the OpenSSL 0.9.8
2004 series, SEED remains excluded from compilation unless OpenSSL
2005 is configured with 'enable-seed'.
2006 [KISA, Bodo Moeller]
2008 *) Mitigate branch prediction attacks, which can be practical if a
2009 single processor is shared, allowing a spy process to extract
2010 information. For detailed background information, see
2011 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2012 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2013 and Necessary Software Countermeasures"). The core of the change
2014 are new versions BN_div_no_branch() and
2015 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2016 respectively, which are slower, but avoid the security-relevant
2017 conditional branches. These are automatically called by BN_div()
2018 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2019 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2020 remove a conditional branch.
2022 BN_FLG_CONSTTIME is the new name for the previous
2023 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2024 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2025 in the exponent causes BN_mod_exp_mont() to use the alternative
2026 implementation in BN_mod_exp_mont_consttime().) The old name
2027 remains as a deprecated alias.
2029 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2030 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2031 constant-time implementations for more than just exponentiation.
2032 Here too the old name is kept as a deprecated alias.
2034 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2035 the BN_BLINDING structure gets an independent copy of the
2036 modulus. This means that the previous "BIGNUM *m" argument to
2037 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2038 essentially becomes "const BIGNUM *m", although we can't actually
2039 change this in the header file before 0.9.9. It allows
2040 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2041 enable BN_FLG_CONSTTIME.
2043 [Matthew D Wood (Intel Corp)]
2045 *) In the SSL/TLS server implementation, be strict about session ID
2046 context matching (which matters if an application uses a single
2047 external cache for different purposes). Previously,
2048 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2049 set. This did ensure strict client verification, but meant that,
2050 with applications using a single external cache for quite
2051 different requirements, clients could circumvent ciphersuite
2052 restrictions for a given session ID context by starting a session
2053 in a different context.
2056 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2057 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2058 authentication-only ciphersuites.
2061 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2062 not complete and could lead to a possible single byte overflow
2063 (CVE-2007-5135) [Ben Laurie]
2065 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2067 *) Since AES128 and AES256 (and similarly Camellia128 and
2068 Camellia256) share a single mask bit in the logic of
2069 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2070 kludge to work properly if AES128 is available and AES256 isn't
2071 (or if Camellia128 is available and Camellia256 isn't).
2074 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2075 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2076 When a point or a seed is encoded in a BIT STRING, we need to
2077 prevent the removal of trailing zero bits to get the proper DER
2078 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2079 of a NamedBitList, for which trailing 0 bits need to be removed.)
2082 *) Have SSL/TLS server implementation tolerate "mismatched" record
2083 protocol version while receiving ClientHello even if the
2084 ClientHello is fragmented. (The server can't insist on the
2085 particular protocol version it has chosen before the ServerHello
2086 message has informed the client about his choice.)
2089 *) Add RFC 3779 support.
2090 [Rob Austein for ARIN, Ben Laurie]
2092 *) Load error codes if they are not already present instead of using a
2093 static variable. This allows them to be cleanly unloaded and reloaded.
2094 Improve header file function name parsing.
2097 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2098 or CAPABILITY handshake as required by RFCs.
2101 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2103 *) Introduce limits to prevent malicious keys being able to
2104 cause a denial of service. (CVE-2006-2940)
2105 [Steve Henson, Bodo Moeller]
2107 *) Fix ASN.1 parsing of certain invalid structures that can result
2108 in a denial of service. (CVE-2006-2937) [Steve Henson]
2110 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2111 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2113 *) Fix SSL client code which could crash if connecting to a
2114 malicious SSLv2 server. (CVE-2006-4343)
2115 [Tavis Ormandy and Will Drewry, Google Security Team]
2117 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2118 match only those. Before that, "AES256-SHA" would be interpreted
2119 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2120 the same strength classification in 0.9.7h) as we currently only
2121 have a single AES bit in the ciphersuite description bitmap.
2122 That change, however, also applied to ciphersuite strings such as
2123 "RC4-MD5" that intentionally matched multiple ciphersuites --
2124 namely, SSL 2.0 ciphersuites in addition to the more common ones
2125 from SSL 3.0/TLS 1.0.
2127 So we change the selection algorithm again: Naming an explicit
2128 ciphersuite selects this one ciphersuite, and any other similar
2129 ciphersuite (same bitmap) from *other* protocol versions.
2130 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2131 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2133 Since SSL 2.0 does not have any ciphersuites for which the
2134 128/256 bit distinction would be relevant, this works for now.
2135 The proper fix will be to use different bits for AES128 and
2136 AES256, which would have avoided the problems from the beginning;
2137 however, bits are scarce, so we can only do this in a new release
2138 (not just a patchlevel) when we can change the SSL_CIPHER
2139 definition to split the single 'unsigned long mask' bitmap into
2140 multiple values to extend the available space.
2144 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2146 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2147 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2149 *) Add AES IGE and biIGE modes.
2152 *) Change the Unix randomness entropy gathering to use poll() when
2153 possible instead of select(), since the latter has some
2154 undesirable limitations.
2155 [Darryl Miles via Richard Levitte and Bodo Moeller]
2157 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2158 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2159 cannot be implicitly activated as part of, e.g., the "AES" alias.
2160 However, please upgrade to OpenSSL 0.9.9[-dev] for
2161 non-experimental use of the ECC ciphersuites to get TLS extension
2162 support, which is required for curve and point format negotiation
2163 to avoid potential handshake problems.
2166 *) Disable rogue ciphersuites:
2168 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2169 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2170 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2172 The latter two were purportedly from
2173 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2176 Also deactivate the remaining ciphersuites from
2177 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2178 unofficial, and the ID has long expired.
2181 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2182 dual-core machines) and other potential thread-safety issues.
2185 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2186 versions), which is now available for royalty-free use
2187 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2188 Also, add Camellia TLS ciphersuites from RFC 4132.
2190 To minimize changes between patchlevels in the OpenSSL 0.9.8
2191 series, Camellia remains excluded from compilation unless OpenSSL
2192 is configured with 'enable-camellia'.
2195 *) Disable the padding bug check when compression is in use. The padding
2196 bug check assumes the first packet is of even length, this is not
2197 necessarily true if compresssion is enabled and can result in false
2198 positives causing handshake failure. The actual bug test is ancient
2199 code so it is hoped that implementations will either have fixed it by
2200 now or any which still have the bug do not support compression.
2203 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2205 *) When applying a cipher rule check to see if string match is an explicit
2206 cipher suite and only match that one cipher suite if it is.
2209 *) Link in manifests for VC++ if needed.
2210 [Austin Ziegler <halostatue@gmail.com>]
2212 *) Update support for ECC-based TLS ciphersuites according to
2213 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2214 TLS extensions, which are supported starting with the 0.9.9
2215 branch, not in the OpenSSL 0.9.8 branch).
2218 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2219 opaque EVP_CIPHER_CTX handling.
2222 *) Fixes and enhancements to zlib compression code. We now only use
2223 "zlib1.dll" and use the default __cdecl calling convention on Win32
2224 to conform with the standards mentioned here:
2225 http://www.zlib.net/DLL_FAQ.txt
2226 Static zlib linking now works on Windows and the new --with-zlib-include
2227 --with-zlib-lib options to Configure can be used to supply the location
2228 of the headers and library. Gracefully handle case where zlib library
2232 *) Several fixes and enhancements to the OID generation code. The old code
2233 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2234 handle numbers larger than ULONG_MAX, truncated printing and had a
2235 non standard OBJ_obj2txt() behaviour.
2238 *) Add support for building of engines under engine/ as shared libraries
2239 under VC++ build system.
2242 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2243 Hopefully, we will not see any false combination of paths any more.
2246 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2248 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2249 (part of SSL_OP_ALL). This option used to disable the
2250 countermeasure against man-in-the-middle protocol-version
2251 rollback in the SSL 2.0 server implementation, which is a bad
2252 idea. (CVE-2005-2969)
2254 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2255 for Information Security, National Institute of Advanced Industrial
2256 Science and Technology [AIST], Japan)]
2258 *) Add two function to clear and return the verify parameter flags.
2261 *) Keep cipherlists sorted in the source instead of sorting them at
2262 runtime, thus removing the need for a lock.
2265 *) Avoid some small subgroup attacks in Diffie-Hellman.
2266 [Nick Mathewson and Ben Laurie]
2268 *) Add functions for well-known primes.
2271 *) Extended Windows CE support.
2272 [Satoshi Nakamura and Andy Polyakov]
2274 *) Initialize SSL_METHOD structures at compile time instead of during
2275 runtime, thus removing the need for a lock.
2278 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2279 attempting to decrypt each encrypted key in turn. Add support to
2283 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2285 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2288 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2291 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2292 key into the same file any more.
2295 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2298 *) Add -utf8 command line and config file option to 'ca'.
2299 [Stefan <stf@udoma.org]
2301 *) Removed the macro des_crypt(), as it seems to conflict with some
2302 libraries. Use DES_crypt().
2305 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2306 involves renaming the source and generated shared-libs for
2307 both. The engines will accept the corrected or legacy ids
2308 ('ncipher' and '4758_cca' respectively) when binding. NB,
2309 this only applies when building 'shared'.
2310 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2312 *) Add attribute functions to EVP_PKEY structure. Modify
2313 PKCS12_create() to recognize a CSP name attribute and
2314 use it. Make -CSP option work again in pkcs12 utility.
2317 *) Add new functionality to the bn blinding code:
2318 - automatic re-creation of the BN_BLINDING parameters after
2319 a fixed number of uses (currently 32)
2320 - add new function for parameter creation
2321 - introduce flags to control the update behaviour of the
2322 BN_BLINDING parameters
2323 - hide BN_BLINDING structure
2324 Add a second BN_BLINDING slot to the RSA structure to improve
2325 performance when a single RSA object is shared among several
2329 *) Add support for DTLS.
2330 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2332 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2333 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2336 *) Remove buggy and incompletet DH cert support from
2337 ssl/ssl_rsa.c and ssl/s3_both.c
2340 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2341 the apps/openssl applications.
2344 *) Compile clean with "-Wall -Wmissing-prototypes
2345 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2346 DEBUG_SAFESTACK must also be set.
2349 *) Change ./Configure so that certain algorithms can be disabled by default.
2350 The new counterpiece to "no-xxx" is "enable-xxx".
2352 The patented RC5 and MDC2 algorithms will now be disabled unless
2353 "enable-rc5" and "enable-mdc2", respectively, are specified.
2355 (IDEA remains enabled despite being patented. This is because IDEA
2356 is frequently required for interoperability, and there is no license
2357 fee for non-commercial use. As before, "no-idea" can be used to
2358 avoid this algorithm.)
2362 *) Add processing of proxy certificates (see RFC 3820). This work was
2363 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2364 EGEE (Enabling Grids for E-science in Europe).
2367 *) RC4 performance overhaul on modern architectures/implementations, such
2368 as Intel P4, IA-64 and AMD64.
2371 *) New utility extract-section.pl. This can be used specify an alternative
2372 section number in a pod file instead of having to treat each file as
2373 a separate case in Makefile. This can be done by adding two lines to the
2376 =for comment openssl_section:XXX
2378 The blank line is mandatory.
2382 *) New arguments -certform, -keyform and -pass for s_client and s_server
2383 to allow alternative format key and certificate files and passphrase
2387 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2388 update associated structures and add various utility functions.
2390 Add new policy related verify parameters, include policy checking in
2391 standard verify code. Enhance 'smime' application with extra parameters
2392 to support policy checking and print out.
2395 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2396 Nehemiah processors. These extensions support AES encryption in hardware
2397 as well as RNG (though RNG support is currently disabled).
2398 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2400 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2403 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2404 [Andy Polyakov and a number of other people]
2406 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2407 implementation contributed by IBM.
2408 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2410 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2411 exponent rather than 'unsigned long'. There is a corresponding change to
2412 the new 'rsa_keygen' element of the RSA_METHOD structure.
2413 [Jelte Jansen, Geoff Thorpe]
2415 *) Functionality for creating the initial serial number file is now
2416 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2418 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2419 number file to 1, which is bound to cause problems. To avoid
2420 the problems while respecting compatibility between different 0.9.7
2421 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2422 CA.pl for serial number initialization. With the new release 0.9.8,
2423 we can fix the problem directly in the 'ca' utility.)
2426 *) Reduced header interdepencies by declaring more opaque objects in
2427 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2428 give fewer recursive includes, which could break lazy source code - so
2429 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2430 developers should define this symbol when building and using openssl to
2431 ensure they track the recommended behaviour, interfaces, [etc], but
2432 backwards-compatible behaviour prevails when this isn't defined.
2435 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2438 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2439 This will generate a random key of the appropriate length based on the
2440 cipher context. The EVP_CIPHER can provide its own random key generation
2441 routine to support keys of a specific form. This is used in the des and
2442 3des routines to generate a key of the correct parity. Update S/MIME
2443 code to use new functions and hence generate correct parity DES keys.
2444 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2445 valid (weak or incorrect parity).
2448 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2449 as looking them up. This is useful when the verified structure may contain
2450 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2451 present unless the new PKCS7_NO_CRL flag is asserted.
2454 *) Extend ASN1 oid configuration module. It now additionally accepts the
2457 shortName = some long name, 1.2.3.4
2460 *) Reimplemented the BN_CTX implementation. There is now no more static
2461 limitation on the number of variables it can handle nor the depth of the
2462 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2463 information can now expand as required, and rather than having a single
2464 static array of bignums, BN_CTX now uses a linked-list of such arrays
2465 allowing it to expand on demand whilst maintaining the usefulness of
2466 BN_CTX's "bundling".
2469 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2470 to allow all RSA operations to function using a single BN_CTX.
2473 *) Preliminary support for certificate policy evaluation and checking. This
2474 is initially intended to pass the tests outlined in "Conformance Testing
2475 of Relying Party Client Certificate Path Processing Logic" v1.07.
2478 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2479 remained unused and not that useful. A variety of other little bignum
2480 tweaks and fixes have also been made continuing on from the audit (see
2484 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2485 associated ASN1, EVP and SSL functions and old ASN1 macros.
2488 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2489 and this should never fail. So the return value from the use of
2490 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2491 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2494 *) BN_CTX_get() should return zero-valued bignums, providing the same
2495 initialised value as BN_new().
2496 [Geoff Thorpe, suggested by Ulf Möller]
2498 *) Support for inhibitAnyPolicy certificate extension.
2501 *) An audit of the BIGNUM code is underway, for which debugging code is
2502 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2503 is considered valid when processing BIGNUMs, and causes execution to
2504 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2505 further steps are taken to deliberately pollute unused data in BIGNUM
2506 structures to try and expose faulty code further on. For now, openssl will
2507 (in its default mode of operation) continue to tolerate the inconsistent
2508 forms that it has tolerated in the past, but authors and packagers should
2509 consider trying openssl and their own applications when compiled with
2510 these debugging symbols defined. It will help highlight potential bugs in
2511 their own code, and will improve the test coverage for OpenSSL itself. At
2512 some point, these tighter rules will become openssl's default to improve
2513 maintainability, though the assert()s and other overheads will remain only
2514 in debugging configurations. See bn.h for more details.
2515 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2517 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2518 that can only be obtained through BN_CTX_new() (which implicitly
2519 initialises it). The presence of this function only made it possible
2520 to overwrite an existing structure (and cause memory leaks).
2523 *) Because of the callback-based approach for implementing LHASH as a
2524 template type, lh_insert() adds opaque objects to hash-tables and
2525 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2526 to clean up those corresponding objects before destroying the hash table
2527 (and losing the object pointers). So some over-zealous constifications in
2528 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2529 objects as "const" and the lh_doall[_arg] callback wrappers are not
2530 prototyped to have "const" restrictions on the object pointers they are
2531 given (and so aren't required to cast them away any more).
2534 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2535 (speed) prefers to use its own implementation. The two implementations
2536 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2537 its object type properly exposed (MS_TM) instead of casting to/from "char
2538 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2539 aren't necessarily the greatest nomenclatures - but this is what was used
2540 internally to the implementation so I've used that for now.
2543 *) Ensure that deprecated functions do not get compiled when
2544 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2545 the self-tests were still using deprecated key-generation functions so
2546 these have been updated also.
2549 *) Reorganise PKCS#7 code to separate the digest location functionality
2550 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2551 New function PKCS7_set_digest() to set the digest type for PKCS#7
2552 digestedData type. Add additional code to correctly generate the
2553 digestedData type and add support for this type in PKCS7 initialization
2557 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2558 structure of type "other".
2561 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2562 sure the loop does correctly stop and breaking ("division by zero")
2563 modulus operations are not performed. The (pre-generated) prime
2564 table crypto/bn/bn_prime.h was already correct, but it could not be
2565 re-generated on some platforms because of the "division by zero"
2566 situation in the script.
2567 [Ralf S. Engelschall]
2569 *) Update support for ECC-based TLS ciphersuites according to
2570 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2571 SHA-1 now is only used for "small" curves (where the
2572 representation of a field element takes up to 24 bytes); for
2573 larger curves, the field element resulting from ECDH is directly
2574 used as premaster secret.
2575 [Douglas Stebila (Sun Microsystems Laboratories)]
2577 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2578 curve secp160r1 to the tests.
2579 [Douglas Stebila (Sun Microsystems Laboratories)]
2581 *) Add the possibility to load symbols globally with DSO.
2582 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2584 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2585 control of the error stack.
2588 *) Add support for STORE in ENGINE.
2591 *) Add the STORE type. The intention is to provide a common interface
2592 to certificate and key stores, be they simple file-based stores, or
2593 HSM-type store, or LDAP stores, or...
2594 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2597 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2598 pass a list of arguments to any function as well as provide a way
2599 for a function to pass data back to the caller.
2602 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2603 works like BUF_strdup() but can be used to duplicate a portion of
2604 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2608 *) Add the function sk_find_ex() which works like sk_find(), but will
2609 return an index to an element even if an exact match couldn't be
2610 found. The index is guaranteed to point at the element where the
2611 searched-for key would be inserted to preserve sorting order.
2614 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2615 takes an extra flags argument for optional functionality. Currently,
2616 the following flags are defined:
2618 OBJ_BSEARCH_VALUE_ON_NOMATCH
2619 This one gets OBJ_bsearch_ex() to return a pointer to the first
2620 element where the comparing function returns a negative or zero
2623 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2624 This one gets OBJ_bsearch_ex() to return a pointer to the first
2625 element where the comparing function returns zero. This is useful
2626 if there are more than one element where the comparing function
2630 *) Make it possible to create self-signed certificates with 'openssl ca'
2631 in such a way that the self-signed certificate becomes part of the
2632 CA database and uses the same mechanisms for serial number generation
2633 as all other certificate signing. The new flag '-selfsign' enables
2634 this functionality. Adapt CA.sh and CA.pl.in.
2637 *) Add functionality to check the public key of a certificate request
2638 against a given private. This is useful to check that a certificate
2639 request can be signed by that key (self-signing).
2642 *) Make it possible to have multiple active certificates with the same
2643 subject in the CA index file. This is done only if the keyword
2644 'unique_subject' is set to 'no' in the main CA section (default
2645 if 'CA_default') of the configuration file. The value is saved
2646 with the database itself in a separate index attribute file,
2647 named like the index file with '.attr' appended to the name.
2650 *) Generate muti valued AVAs using '+' notation in config files for
2654 *) Support for nameConstraints certificate extension.
2657 *) Support for policyConstraints certificate extension.
2660 *) Support for policyMappings certificate extension.
2663 *) Make sure the default DSA_METHOD implementation only uses its
2664 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2665 and change its own handlers to be NULL so as to remove unnecessary
2666 indirection. This lets alternative implementations fallback to the
2667 default implementation more easily.
2670 *) Support for directoryName in GeneralName related extensions
2674 *) Make it possible to link applications using Makefile.shared.
2675 Make that possible even when linking against static libraries!
2678 *) Support for single pass processing for S/MIME signing. This now
2679 means that S/MIME signing can be done from a pipe, in addition
2680 cleartext signing (multipart/signed type) is effectively streaming
2681 and the signed data does not need to be all held in memory.
2683 This is done with a new flag PKCS7_STREAM. When this flag is set
2684 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2685 is done after the data is output (and digests calculated) in
2686 SMIME_write_PKCS7().
2689 *) Add full support for -rpath/-R, both in shared libraries and
2690 applications, at least on the platforms where it's known how
2694 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2695 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2696 will now compute a table of multiples of the generator that
2697 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2698 faster (notably in the case of a single point multiplication,
2699 scalar * generator).
2700 [Nils Larsch, Bodo Moeller]
2702 *) IPv6 support for certificate extensions. The various extensions
2703 which use the IP:a.b.c.d can now take IPv6 addresses using the
2704 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2708 *) Added an ENGINE that implements RSA by performing private key
2709 exponentiations with the GMP library. The conversions to and from
2710 GMP's mpz_t format aren't optimised nor are any montgomery forms
2711 cached, and on x86 it appears OpenSSL's own performance has caught up.
2712 However there are likely to be other architectures where GMP could
2713 provide a boost. This ENGINE is not built in by default, but it can be
2714 specified at Configure time and should be accompanied by the necessary
2715 linker additions, eg;
2716 ./config -DOPENSSL_USE_GMP -lgmp
2719 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2720 testing availability of engines with "-t" - the old behaviour is
2721 produced by increasing the feature's verbosity with "-tt".
2724 *) ECDSA routines: under certain error conditions uninitialized BN objects
2725 could be freed. Solution: make sure initialization is performed early
2726 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2730 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2731 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2732 software implementations. For DSA and DH, parameter generation can
2733 also be overriden by providing the appropriate method callbacks.
2736 *) Change the "progress" mechanism used in key-generation and
2737 primality testing to functions that take a new BN_GENCB pointer in
2738 place of callback/argument pairs. The new API functions have "_ex"
2739 postfixes and the older functions are reimplemented as wrappers for
2740 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2741 declarations of the old functions to help (graceful) attempts to
2742 migrate to the new functions. Also, the new key-generation API
2743 functions operate on a caller-supplied key-structure and return
2744 success/failure rather than returning a key or NULL - this is to
2745 help make "keygen" another member function of RSA_METHOD etc.
2747 Example for using the new callback interface:
2749 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2753 BN_GENCB_set(&my_cb, my_callback, my_arg);
2755 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2756 /* For the meaning of a, b in calls to my_callback(), see the
2757 * documentation of the function that calls the callback.
2758 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2759 * my_callback should return 1 if it wants BN_is_prime_ex()
2760 * to continue, or 0 to stop.
2765 *) Change the ZLIB compression method to be stateful, and make it
2766 available to TLS with the number defined in
2767 draft-ietf-tls-compression-04.txt.
2770 *) Add the ASN.1 structures and functions for CertificatePair, which
2771 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2773 CertificatePair ::= SEQUENCE {
2774 forward [0] Certificate OPTIONAL,
2775 reverse [1] Certificate OPTIONAL,
2776 -- at least one of the pair shall be present -- }
2778 Also implement the PEM functions to read and write certificate
2779 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2781 This needed to be defined, mostly for the sake of the LDAP
2782 attribute crossCertificatePair, but may prove useful elsewhere as
2786 *) Make it possible to inhibit symlinking of shared libraries in
2787 Makefile.shared, for Cygwin's sake.
2790 *) Extend the BIGNUM API by creating a function
2791 void BN_set_negative(BIGNUM *a, int neg);
2792 and a macro that behave like
2793 int BN_is_negative(const BIGNUM *a);
2795 to avoid the need to access 'a->neg' directly in applications.
2798 *) Implement fast modular reduction for pseudo-Mersenne primes
2799 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2800 EC_GROUP_new_curve_GFp() will now automatically use this
2802 [Nils Larsch <nla@trustcenter.de>]
2804 *) Add new lock type (CRYPTO_LOCK_BN).
2807 *) Change the ENGINE framework to automatically load engines
2808 dynamically from specific directories unless they could be
2809 found to already be built in or loaded. Move all the
2810 current engines except for the cryptodev one to a new
2812 The engines in engines/ are built as shared libraries if
2813 the "shared" options was given to ./Configure or ./config.
2814 Otherwise, they are inserted in libcrypto.a.
2815 /usr/local/ssl/engines is the default directory for dynamic
2816 engines, but that can be overriden at configure time through
2817 the usual use of --prefix and/or --openssldir, and at run
2818 time with the environment variable OPENSSL_ENGINES.
2819 [Geoff Thorpe and Richard Levitte]
2821 *) Add Makefile.shared, a helper makefile to build shared
2822 libraries. Addapt Makefile.org.
2825 *) Add version info to Win32 DLLs.
2826 [Peter 'Luna' Runestig" <peter@runestig.com>]
2828 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2829 can be added using this API to created arbitrary PKCS#12
2830 files while avoiding the low level API.
2832 New options to PKCS12_create(), key or cert can be NULL and
2833 will then be omitted from the output file. The encryption
2834 algorithm NIDs can be set to -1 for no encryption, the mac
2835 iteration count can be set to 0 to omit the mac.
2837 Enhance pkcs12 utility by making the -nokeys and -nocerts
2838 options work when creating a PKCS#12 file. New option -nomac
2839 to omit the mac, NONE can be set for an encryption algorithm.
2840 New code is modified to use the enhanced PKCS12_create()
2841 instead of the low level API.
2844 *) Extend ASN1 encoder to support indefinite length constructed
2845 encoding. This can output sequences tags and octet strings in
2846 this form. Modify pk7_asn1.c to support indefinite length
2847 encoding. This is experimental and needs additional code to
2848 be useful, such as an ASN1 bio and some enhanced streaming
2851 Extend template encode functionality so that tagging is passed
2852 down to the template encoder.
2855 *) Let 'openssl req' fail if an argument to '-newkey' is not
2856 recognized instead of using RSA as a default.
2859 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2860 As these are not official, they are not included in "ALL";
2861 the "ECCdraft" ciphersuite group alias can be used to select them.
2862 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2864 *) Add ECDH engine support.
2865 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2867 *) Add ECDH in new directory crypto/ecdh/.
2868 [Douglas Stebila (Sun Microsystems Laboratories)]
2870 *) Let BN_rand_range() abort with an error after 100 iterations
2871 without success (which indicates a broken PRNG).
2874 *) Change BN_mod_sqrt() so that it verifies that the input value
2875 is really the square of the return value. (Previously,
2876 BN_mod_sqrt would show GIGO behaviour.)
2879 *) Add named elliptic curves over binary fields from X9.62, SECG,
2880 and WAP/WTLS; add OIDs that were still missing.
2882 [Sheueling Chang Shantz and Douglas Stebila
2883 (Sun Microsystems Laboratories)]
2885 *) Extend the EC library for elliptic curves over binary fields
2886 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2889 EC_GF2m_simple_method
2893 EC_GROUP_new_curve_GF2m
2894 EC_GROUP_set_curve_GF2m
2895 EC_GROUP_get_curve_GF2m
2896 EC_POINT_set_affine_coordinates_GF2m
2897 EC_POINT_get_affine_coordinates_GF2m
2898 EC_POINT_set_compressed_coordinates_GF2m
2900 Point compression for binary fields is disabled by default for
2901 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2904 As binary polynomials are represented as BIGNUMs, various members
2905 of the EC_GROUP and EC_POINT data structures can be shared
2906 between the implementations for prime fields and binary fields;
2907 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2908 are essentially identical to their ..._GFp counterparts.
2909 (For simplicity, the '..._GFp' prefix has been dropped from
2910 various internal method names.)
2912 An internal 'field_div' method (similar to 'field_mul' and
2913 'field_sqr') has been added; this is used only for binary fields.
2915 [Sheueling Chang Shantz and Douglas Stebila
2916 (Sun Microsystems Laboratories)]
2918 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2919 through methods ('mul', 'precompute_mult').
2921 The generic implementations (now internally called 'ec_wNAF_mul'
2922 and 'ec_wNAF_precomputed_mult') remain the default if these
2923 methods are undefined.
2925 [Sheueling Chang Shantz and Douglas Stebila
2926 (Sun Microsystems Laboratories)]
2928 *) New function EC_GROUP_get_degree, which is defined through
2929 EC_METHOD. For curves over prime fields, this returns the bit
2930 length of the modulus.
2932 [Sheueling Chang Shantz and Douglas Stebila
2933 (Sun Microsystems Laboratories)]
2935 *) New functions EC_GROUP_dup, EC_POINT_dup.
2936 (These simply call ..._new and ..._copy).
2938 [Sheueling Chang Shantz and Douglas Stebila
2939 (Sun Microsystems Laboratories)]
2941 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2942 Polynomials are represented as BIGNUMs (where the sign bit is not
2943 used) in the following functions [macros]:
2946 BN_GF2m_sub [= BN_GF2m_add]
2947 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2948 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2949 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2951 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2952 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2953 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2954 BN_GF2m_cmp [= BN_ucmp]
2956 (Note that only the 'mod' functions are actually for fields GF(2^m).
2957 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2959 For some functions, an the irreducible polynomial defining a
2960 field can be given as an 'unsigned int[]' with strictly
2961 decreasing elements giving the indices of those bits that are set;
2962 i.e., p[] represents the polynomial
2963 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2965 p[0] > p[1] > ... > p[k] = 0.
2966 This applies to the following functions:
2971 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2972 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2974 BN_GF2m_mod_sqrt_arr
2975 BN_GF2m_mod_solve_quad_arr
2979 Conversion can be performed by the following functions:
2984 bntest.c has additional tests for binary polynomial arithmetic.
2986 Two implementations for BN_GF2m_mod_div() are available.
2987 The default algorithm simply uses BN_GF2m_mod_inv() and
2988 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2989 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2990 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2992 [Sheueling Chang Shantz and Douglas Stebila
2993 (Sun Microsystems Laboratories)]
2995 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2996 functionality is disabled at compile-time.
2997 [Douglas Stebila <douglas.stebila@sun.com>]
2999 *) Change default behaviour of 'openssl asn1parse' so that more
3000 information is visible when viewing, e.g., a certificate:
3002 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3003 mode the content of non-printable OCTET STRINGs is output in a
3004 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3005 avoid the appearance of a printable string.
3006 [Nils Larsch <nla@trustcenter.de>]
3008 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3010 EC_GROUP_set_asn1_flag()
3011 EC_GROUP_get_asn1_flag()
3012 EC_GROUP_set_point_conversion_form()
3013 EC_GROUP_get_point_conversion_form()
3014 These control ASN1 encoding details:
3015 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3016 has been set to OPENSSL_EC_NAMED_CURVE.
3017 - Points are encoded in uncompressed form by default; options for
3018 asn1_for are as for point2oct, namely
3019 POINT_CONVERSION_COMPRESSED
3020 POINT_CONVERSION_UNCOMPRESSED
3021 POINT_CONVERSION_HYBRID
3023 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3026 EC_GROUP_get0_seed()
3027 EC_GROUP_get_seed_len()
3028 This is used only for ASN1 purposes (so far).
3029 [Nils Larsch <nla@trustcenter.de>]
3031 *) Add 'field_type' member to EC_METHOD, which holds the NID
3032 of the appropriate field type OID. The new function
3033 EC_METHOD_get_field_type() returns this value.
3034 [Nils Larsch <nla@trustcenter.de>]
3039 EC_POINT_point2hex()
3040 EC_POINT_hex2point()
3041 providing useful interfaces to EC_POINT_point2oct() and
3042 EC_POINT_oct2point().
3043 [Nils Larsch <nla@trustcenter.de>]
3045 *) Change internals of the EC library so that the functions
3046 EC_GROUP_set_generator()
3047 EC_GROUP_get_generator()
3048 EC_GROUP_get_order()
3049 EC_GROUP_get_cofactor()
3050 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3051 to methods, which would lead to unnecessary code duplication when
3052 adding different types of curves.
3053 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3055 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3056 arithmetic, and such that modified wNAFs are generated
3057 (which avoid length expansion in many cases).
3060 *) Add a function EC_GROUP_check_discriminant() (defined via
3061 EC_METHOD) that verifies that the curve discriminant is non-zero.
3063 Add a function EC_GROUP_check() that makes some sanity tests
3064 on a EC_GROUP, its generator and order. This includes
3065 EC_GROUP_check_discriminant().
3066 [Nils Larsch <nla@trustcenter.de>]
3068 *) Add ECDSA in new directory crypto/ecdsa/.
3070 Add applications 'openssl ecparam' and 'openssl ecdsa'
3071 (these are based on 'openssl dsaparam' and 'openssl dsa').
3073 ECDSA support is also included in various other files across the
3074 library. Most notably,
3075 - 'openssl req' now has a '-newkey ecdsa:file' option;
3076 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3077 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3078 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3079 them suitable for ECDSA where domain parameters must be
3080 extracted before the specific public key;
3081 - ECDSA engine support has been added.
3082 [Nils Larsch <nla@trustcenter.de>]
3084 *) Include some named elliptic curves, and add OIDs from X9.62,
3085 SECG, and WAP/WTLS. Each curve can be obtained from the new
3087 EC_GROUP_new_by_curve_name(),
3088 and the list of available named curves can be obtained with
3089 EC_get_builtin_curves().
3090 Also add a 'curve_name' member to EC_GROUP objects, which can be
3092 EC_GROUP_set_curve_name()
3093 EC_GROUP_get_curve_name()
3094 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3096 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3097 was actually never needed) and in BN_mul(). The removal in BN_mul()
3098 required a small change in bn_mul_part_recursive() and the addition
3099 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3100 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3101 bn_sub_words() and bn_add_words() except they take arrays with
3105 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3107 *) Cleanse PEM buffers before freeing them since they may contain
3109 [Benjamin Bennett <ben@psc.edu>]
3111 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3112 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3113 authentication-only ciphersuites.
3116 *) Since AES128 and AES256 share a single mask bit in the logic of
3117 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3118 kludge to work properly if AES128 is available and AES256 isn't.
3121 *) Expand security boundary to match 1.1.1 module.
3124 *) Remove redundant features: hash file source, editing of test vectors
3125 modify fipsld to use external fips_premain.c signature.
3128 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3129 run algorithm test programs.
3132 *) Make algorithm test programs more tolerant of whitespace.
3135 *) Have SSL/TLS server implementation tolerate "mismatched" record
3136 protocol version while receiving ClientHello even if the
3137 ClientHello is fragmented. (The server can't insist on the
3138 particular protocol version it has chosen before the ServerHello
3139 message has informed the client about his choice.)
3142 *) Load error codes if they are not already present instead of using a
3143 static variable. This allows them to be cleanly unloaded and reloaded.
3146 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3148 *) Introduce limits to prevent malicious keys being able to
3149 cause a denial of service. (CVE-2006-2940)
3150 [Steve Henson, Bodo Moeller]
3152 *) Fix ASN.1 parsing of certain invalid structures that can result
3153 in a denial of service. (CVE-2006-2937) [Steve Henson]
3155 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3156 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3158 *) Fix SSL client code which could crash if connecting to a
3159 malicious SSLv2 server. (CVE-2006-4343)
3160 [Tavis Ormandy and Will Drewry, Google Security Team]
3162 *) Change ciphersuite string processing so that an explicit
3163 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3164 will no longer include "AES128-SHA"), and any other similar
3165 ciphersuite (same bitmap) from *other* protocol versions (so that
3166 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3167 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3168 changes from 0.9.8b and 0.9.8d.
3171 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3173 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3174 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3176 *) Change the Unix randomness entropy gathering to use poll() when
3177 possible instead of select(), since the latter has some
3178 undesirable limitations.
3179 [Darryl Miles via Richard Levitte and Bodo Moeller]
3181 *) Disable rogue ciphersuites:
3183 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3184 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3185 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3187 The latter two were purportedly from
3188 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3191 Also deactive the remaining ciphersuites from
3192 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3193 unofficial, and the ID has long expired.
3196 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3197 dual-core machines) and other potential thread-safety issues.
3200 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3202 *) Adapt fipsld and the build system to link against the validated FIPS
3203 module in FIPS mode.
3206 *) Fixes for VC++ 2005 build under Windows.
3209 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3210 from a Windows bash shell such as MSYS. It is autodetected from the
3211 "config" script when run from a VC++ environment. Modify standard VC++
3212 build to use fipscanister.o from the GNU make build.
3215 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3217 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3218 The value now differs depending on if you build for FIPS or not.
3219 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3220 safely run with a non-FIPSed libcrypto, as it may crash because of
3221 the difference induced by this change.
3224 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3226 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3227 (part of SSL_OP_ALL). This option used to disable the
3228 countermeasure against man-in-the-middle protocol-version
3229 rollback in the SSL 2.0 server implementation, which is a bad
3230 idea. (CVE-2005-2969)
3232 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3233 for Information Security, National Institute of Advanced Industrial
3234 Science and Technology [AIST], Japan)]
3236 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3237 mainly for FIPS compliance and not fully integrated at this stage.
3240 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3241 the exponentiation using a fixed-length exponent. (Otherwise,
3242 the information leaked through timing could expose the secret key
3243 after many signatures; cf. Bleichenbacher's attack on DSA with
3247 *) Make a new fixed-window mod_exp implementation the default for
3248 RSA, DSA, and DH private-key operations so that the sequence of
3249 squares and multiplies and the memory access pattern are
3250 independent of the particular secret key. This will mitigate
3251 cache-timing and potential related attacks.
3253 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3254 and this is automatically used by BN_mod_exp_mont() if the new flag
3255 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3256 will use this BN flag for private exponents unless the flag
3257 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3258 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3260 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3262 *) Change the client implementation for SSLv23_method() and
3263 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3264 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3265 (Previously, the SSL 2.0 backwards compatible Client Hello
3266 message format would be used even with SSL_OP_NO_SSLv2.)
3269 *) Add support for smime-type MIME parameter in S/MIME messages which some
3273 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3274 a threadsafe manner. Modify rsa code to use new function and add calls
3275 to dsa and dh code (which had race conditions before).
3278 *) Include the fixed error library code in the C error file definitions
3279 instead of fixing them up at runtime. This keeps the error code
3280 structures constant.
3283 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3285 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3288 *) Fixes for newer kerberos headers. NB: the casts are needed because
3289 the 'length' field is signed on one version and unsigned on another
3290 with no (?) obvious way to tell the difference, without these VC++
3291 complains. Also the "definition" of FAR (blank) is no longer included
3292 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3293 some needed definitions.
3296 *) Undo Cygwin change.
3299 *) Added support for proxy certificates according to RFC 3820.
3300 Because they may be a security thread to unaware applications,
3301 they must be explicitely allowed in run-time. See
3302 docs/HOWTO/proxy_certificates.txt for further information.
3305 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3307 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3308 server and client random values. Previously
3309 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3310 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3312 This change has negligible security impact because:
3314 1. Server and client random values still have 24 bytes of pseudo random
3317 2. Server and client random values are sent in the clear in the initial
3320 3. The master secret is derived using the premaster secret (48 bytes in
3321 size for static RSA ciphersuites) as well as client server and random
3324 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3327 [Stephen Henson, reported by UK NISCC]
3329 *) Use Windows randomness collection on Cygwin.
3332 *) Fix hang in EGD/PRNGD query when communication socket is closed
3333 prematurely by EGD/PRNGD.
3334 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3336 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3339 *) Back-port of selected performance improvements from development
3340 branch, as well as improved support for PowerPC platforms.
3343 *) Add lots of checks for memory allocation failure, error codes to indicate
3344 failure and freeing up memory if a failure occurs.
3345 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3347 *) Add new -passin argument to dgst.
3350 *) Perform some character comparisons of different types in X509_NAME_cmp:
3351 this is needed for some certificates that reencode DNs into UTF8Strings
3352 (in violation of RFC3280) and can't or wont issue name rollover
3356 *) Make an explicit check during certificate validation to see that
3357 the CA setting in each certificate on the chain is correct. As a
3358 side effect always do the following basic checks on extensions,
3359 not just when there's an associated purpose to the check:
3361 - if there is an unhandled critical extension (unless the user
3362 has chosen to ignore this fault)
3363 - if the path length has been exceeded (if one is set at all)
3364 - that certain extensions fit the associated purpose (if one has
3368 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3370 *) Avoid a race condition when CRLs are checked in a multi threaded
3371 environment. This would happen due to the reordering of the revoked
3372 entries during signature checking and serial number lookup. Now the
3373 encoding is cached and the serial number sort performed under a lock.
3374 Add new STACK function sk_is_sorted().
3377 *) Add Delta CRL to the extension code.
3380 *) Various fixes to s3_pkt.c so alerts are sent properly.
3381 [David Holmes <d.holmes@f5.com>]
3383 *) Reduce the chances of duplicate issuer name and serial numbers (in
3384 violation of RFC3280) using the OpenSSL certificate creation utilities.
3385 This is done by creating a random 64 bit value for the initial serial
3386 number when a serial number file is created or when a self signed
3387 certificate is created using 'openssl req -x509'. The initial serial
3388 number file is created using 'openssl x509 -next_serial' in CA.pl
3389 rather than being initialized to 1.
3392 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3394 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3395 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3396 [Joe Orton, Steve Henson]
3398 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3400 [Joe Orton, Steve Henson]
3402 *) Make it possible to have multiple active certificates with the same
3403 subject in the CA index file. This is done only if the keyword
3404 'unique_subject' is set to 'no' in the main CA section (default
3405 if 'CA_default') of the configuration file. The value is saved
3406 with the database itself in a separate index attribute file,
3407 named like the index file with '.attr' appended to the name.
3410 *) X509 verify fixes. Disable broken certificate workarounds when
3411 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3412 keyUsage extension present. Don't accept CRLs with unhandled critical
3413 extensions: since verify currently doesn't process CRL extensions this
3414 rejects a CRL with *any* critical extensions. Add new verify error codes
3418 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3419 A clarification of RFC2560 will require the use of OCTET STRINGs and
3420 some implementations cannot handle the current raw format. Since OpenSSL
3421 copies and compares OCSP nonces as opaque blobs without any attempt at
3422 parsing them this should not create any compatibility issues.
3425 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3426 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3427 this HMAC (and other) operations are several times slower than OpenSSL
3431 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3432 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3434 *) Use the correct content when signing type "other".
3437 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3439 *) Fix various bugs revealed by running the NISCC test suite:
3441 Stop out of bounds reads in the ASN1 code when presented with
3442 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3444 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3446 If verify callback ignores invalid public key errors don't try to check
3447 certificate signature with the NULL public key.
3451 *) New -ignore_err option in ocsp application to stop the server
3452 exiting on the first error in a request.
3455 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3456 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3460 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3461 extra data after the compression methods not only for TLS 1.0
3462 but also for SSL 3.0 (as required by the specification).
3463 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3465 *) Change X509_certificate_type() to mark the key as exported/exportable
3466 when it's 512 *bits* long, not 512 bytes.
3469 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3470 blocks during encryption.
3473 *) Various fixes to base64 BIO and non blocking I/O. On write
3474 flushes were not handled properly if the BIO retried. On read
3475 data was not being buffered properly and had various logic bugs.
3476 This also affects blocking I/O when the data being decoded is a
3480 *) Various S/MIME bugfixes and compatibility changes:
3481 output correct application/pkcs7 MIME type if
3482 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3483 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3484 of files as .eml work). Correctly handle very long lines in MIME
3488 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3490 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3491 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3492 a protocol version number mismatch like a decryption error
3493 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3496 *) Turn on RSA blinding by default in the default implementation
3497 to avoid a timing attack. Applications that don't want it can call
3498 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3499 They would be ill-advised to do so in most cases.
3500 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3502 *) Change RSA blinding code so that it works when the PRNG is not
3503 seeded (in this case, the secret RSA exponent is abused as
3504 an unpredictable seed -- if it is not unpredictable, there
3505 is no point in blinding anyway). Make RSA blinding thread-safe
3506 by remembering the creator's thread ID in rsa->blinding and
3507 having all other threads use local one-time blinding factors
3508 (this requires more computation than sharing rsa->blinding, but
3509 avoids excessive locking; and if an RSA object is not shared
3510 between threads, blinding will still be very fast).
3513 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3514 ENGINE as defaults for all supported algorithms irrespective of
3515 the 'flags' parameter. 'flags' is now honoured, so applications
3516 should make sure they are passing it correctly.
3519 *) Target "mingw" now allows native Windows code to be generated in
3520 the Cygwin environment as well as with the MinGW compiler.
3523 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3525 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3526 via timing by performing a MAC computation even if incorrrect
3527 block cipher padding has been found. This is a countermeasure
3528 against active attacks where the attacker has to distinguish
3529 between bad padding and a MAC verification error. (CVE-2003-0078)
3531 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3532 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3533 Martin Vuagnoux (EPFL, Ilion)]
3535 *) Make the no-err option work as intended. The intention with no-err
3536 is not to have the whole error stack handling routines removed from
3537 libcrypto, it's only intended to remove all the function name and
3538 reason texts, thereby removing some of the footprint that may not
3539 be interesting if those errors aren't displayed anyway.
3541 NOTE: it's still possible for any application or module to have it's
3542 own set of error texts inserted. The routines are there, just not
3543 used by default when no-err is given.
3546 *) Add support for FreeBSD on IA64.
3547 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3549 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3550 Kerberos function mit_des_cbc_cksum(). Before this change,
3551 the value returned by DES_cbc_cksum() was like the one from
3552 mit_des_cbc_cksum(), except the bytes were swapped.
3553 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3555 *) Allow an application to disable the automatic SSL chain building.
3556 Before this a rather primitive chain build was always performed in
3557 ssl3_output_cert_chain(): an application had no way to send the
3558 correct chain if the automatic operation produced an incorrect result.
3560 Now the chain builder is disabled if either:
3562 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3564 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3566 The reasoning behind this is that an application would not want the
3567 auto chain building to take place if extra chain certificates are
3568 present and it might also want a means of sending no additional
3569 certificates (for example the chain has two certificates and the
3573 *) Add the possibility to build without the ENGINE framework.
3574 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3576 *) Under Win32 gmtime() can return NULL: check return value in
3577 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3580 *) DSA routines: under certain error conditions uninitialized BN objects
3581 could be freed. Solution: make sure initialization is performed early
3582 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3583 Nils Larsch <nla@trustcenter.de> via PR#459)
3586 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3587 checked on reconnect on the client side, therefore session resumption
3588 could still fail with a "ssl session id is different" error. This
3589 behaviour is masked when SSL_OP_ALL is used due to
3590 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3591 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3592 followup to PR #377.
3595 *) IA-32 assembler support enhancements: unified ELF targets, support
3596 for SCO/Caldera platforms, fix for Cygwin shared build.
3599 *) Add support for FreeBSD on sparc64. As a consequence, support for
3600 FreeBSD on non-x86 processors is separate from x86 processors on
3601 the config script, much like the NetBSD support.
3602 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3604 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3606 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3609 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3610 code (06) was taken as the first octet of the session ID and the last
3611 octet was ignored consequently. As a result SSLv2 client side session
3612 caching could not have worked due to the session ID mismatch between
3614 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3618 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3619 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3623 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3624 seems that in spite of existing for more than a year, many application
3625 author have done nothing to provide the necessary callbacks, which
3626 means that this particular engine will not work properly anywhere.
3627 This is a very unfortunate situation which forces us, in the name
projects / openssl.git / blob