5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Add support for HMAC DRBG from SP800-90. Update algorithm and POST
11 *) Add GCM support to TLS library. Some custom code is needed to split
12 the IV between the fixed (from PRF) and explicit (from TLS record)
13 portions. This adds all GCM ciphersuites supported by RFC5288 and
14 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
15 add a special AESGCM string for GCM only.
18 *) Expand range of ctrls for AES GCM. Permit setting invocation
19 field on decrypt and retrieval of invocation field only on encrypt.
22 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
23 As required by RFC5289 these ciphersuites cannot be used if for
24 versions of TLS earlier than 1.2.
27 *) Add functions FIPS_module_version() and FIPS_module_version_text()
28 to return numberical and string versions of the FIPS module number.
31 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
32 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
33 outside the validated module in the FIPS capable OpenSSL.
36 *) Minor change to DRBG entropy callback semantics. In some cases
37 there is no mutiple of the block length between min_len and
38 max_len. Allow the callback to return more than max_len bytes
39 of entropy but discard any extra: it is the callback's responsibility
40 to ensure that the extra data discarded does not impact the
41 requested amount of entropy.
44 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
45 information in FIPS186-3, SP800-57 and SP800-131A.
48 *) CCM support via EVP. Interface is very similar to GCM case except we
49 must supply all data in one chunk (i.e. no update, final) and the
50 message length must be supplied if AAD is used. Add algorithm test
54 *) Initial version of POST overhaul. Add POST callback to allow the status
55 of POST to be monitored and/or failures induced. Modify fips_test_suite
56 to use callback. Always run all selftests even if one fails.
59 *) XTS support including algorithm test driver in the fips_gcmtest program.
60 Note: this does increase the maximum key length from 32 to 64 bytes but
61 there should be no binary compatibility issues as existing applications
62 will never use XTS mode.
65 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
66 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
67 performs algorithm blocking for unapproved PRNG types. Also do not
68 set PRNG type in FIPS_mode_set(): leave this to the application.
69 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
70 the standard OpenSSL PRNG: set additional data to a date time vector.
73 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
74 This shouldn't present any incompatibility problems because applications
75 shouldn't be using these directly and any that are will need to rethink
76 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
79 *) Extensive self tests and health checking required by SP800-90 DRBG.
80 Remove strength parameter from FIPS_drbg_instantiate and always
81 instantiate at maximum supported strength.
84 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
87 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
90 *) New function DH_compute_key_padded() to compute a DH key and pad with
91 leading zeroes if needed: this complies with SP800-56A et al.
94 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
95 anything, incomplete, subject to change and largely untested at present.
98 *) Modify fipscanisteronly build option to only build the necessary object
99 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
102 *) Add experimental option FIPSSYMS to give all symbols in
103 fipscanister.o and FIPS or fips prefix. This will avoid
104 conflicts with future versions of OpenSSL. Add perl script
105 util/fipsas.pl to preprocess assembly language source files
106 and rename any affected symbols.
109 *) Add selftest checks and algorithm block of non-fips algorithms in
110 FIPS mode. Remove DES2 from selftests.
113 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
114 return internal method without any ENGINE dependencies. Add new
115 tiny fips sign and verify functions.
118 *) New build option no-ec2m to disable characteristic 2 code.
121 *) New build option "fipscanisteronly". This only builds fipscanister.o
122 and (currently) associated fips utilities. Uses the file Makefile.fips
123 instead of Makefile.org as the prototype.
126 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
127 Update fips_gcmtest to use IV generator.
130 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
131 setting output buffer to NULL. The *Final function must be
132 called although it will not retrieve any additional data. The tag
133 can be set or retrieved with a ctrl. The IV length is by default 12
134 bytes (96 bits) but can be set to an alternative value. If the IV
135 length exceeds the maximum IV length (currently 16 bytes) it cannot be
139 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
140 underlying do_cipher function handles all cipher semantics itself
141 including padding and finalisation. This is useful if (for example)
142 an ENGINE cipher handles block padding itself. The behaviour of
143 do_cipher is subtly changed if this flag is set: the return value
144 is the number of characters written to the output buffer (zero is
145 no longer an error code) or a negative error code. Also if the
146 input buffer is NULL and length 0 finalisation should be performed.
149 *) If a candidate issuer certificate is already part of the constructed
150 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
153 *) Improve forward-security support: add functions
155 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
156 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
158 for use by SSL/TLS servers; the callback function will be called whenever a
159 new session is created, and gets to decide whether the session may be
160 cached to make it resumable (return 0) or not (return 1). (As by the
161 SSL/TLS protocol specifications, the session_id sent by the server will be
162 empty to indicate that the session is not resumable; also, the server will
163 not generate RFC 4507 (RFC 5077) session tickets.)
165 A simple reasonable callback implementation is to return is_forward_secure.
166 This parameter will be set to 1 or 0 depending on the ciphersuite selected
167 by the SSL/TLS server library, indicating whether it can provide forward
169 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
171 *) Add Next Protocol Negotiation,
172 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
173 disabled with a no-npn flag to config or Configure. Code donated
175 [Adam Langley <agl@google.com> and Ben Laurie]
177 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
178 all platforms. Move ssize_t definition from e_os.h to the public
179 header file e_os2.h as it now appears in public header file cms.h
182 *) New function OPENSSL_gmtime_diff to find the difference in days
183 and seconds between two tm structures. This will be used to provide
184 additional functionality for ASN1_TIME.
187 *) New -sigopt option to the ca, req and x509 utilities. Additional
188 signature parameters can be passed using this option and in
192 *) Add RSA PSS signing function. This will generate and set the
193 appropriate AlgorithmIdentifiers for PSS based on those in the
194 corresponding EVP_MD_CTX structure. No application support yet.
197 *) Support for companion algorithm specific ASN1 signing routines.
198 New function ASN1_item_sign_ctx() signs a pre-initialised
199 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
200 the appropriate parameters.
203 *) Add new algorithm specific ASN1 verification initialisation function
204 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
205 handling will be the same no matter what EVP_PKEY_METHOD is used.
206 Add a PSS handler to support verification of PSS signatures: checked
207 against a number of sample certificates.
210 *) Add signature printing for PSS. Add PSS OIDs.
211 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
213 *) Add algorithm specific signature printing. An individual ASN1 method
214 can now print out signatures instead of the standard hex dump.
216 More complex signatures (e.g. PSS) can print out more meaningful
217 information. Include DSA version that prints out the signature
221 *) Add -trusted_first option which attempts to find certificates in the
222 trusted store even if an untrusted chain is also supplied.
225 *) Initial experimental support for explicitly trusted non-root CAs.
226 OpenSSL still tries to build a complete chain to a root but if an
227 intermediate CA has a trust setting included that is used. The first
228 setting is used: whether to trust or reject.
231 *) New -verify_name option in command line utilities to set verification
235 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
236 Add CMAC pkey methods.
239 *) Experiemental regnegotiation in s_server -www mode. If the client
240 browses /reneg connection is renegotiated. If /renegcert it is
241 renegotiated requesting a certificate.
244 *) Add an "external" session cache for debugging purposes to s_server. This
245 should help trace issues which normally are only apparent in deployed
246 multi-process servers.
249 *) Experiemental password based recipient info support for CMS library:
250 implementing RFC3211.
253 *) Split password based encryption into PBES2 and PBKDF2 functions. This
254 neatly separates the code into cipher and PBE sections and is required
255 for some algorithms that split PBES2 into separate pieces (such as
259 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
260 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
261 BIO_set_cipher() and some obscure PEM functions were changed so they
262 can now return an error. The RAND changes required a change to the
263 RAND_METHOD structure.
266 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
267 a gcc attribute to warn if the result of a function is ignored. This
268 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
269 whose return value is often ignored.
272 Changes between 1.0.0e and 1.0.1 [xx XXX xxxx]
274 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
275 ENGINE is used then we cannot handle that in the FIPS module so we
276 keep original code iff non-FIPS operations are allowed.
279 *) Add -attime option to openssl verify.
280 [Peter Eckersley <pde@eff.org> and Ben Laurie]
282 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
285 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
286 FIPS EC methods unconditionally for now.
289 *) New build option no-ec2m to disable characteristic 2 code.
292 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
293 all cases can be covered as some introduce binary incompatibilities.
296 *) Redirect RSA operations to FIPS module including keygen,
297 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
300 *) Add similar low level API blocking to ciphers.
303 *) Low level digest APIs are not approved in FIPS mode: any attempt
304 to use these will cause a fatal error. Applications that *really* want
305 to use them can use the private_* version instead.
308 *) Redirect cipher operations to FIPS module for FIPS builds.
311 *) Redirect digest operations to FIPS module for FIPS builds.
314 *) Update build system to add "fips" flag which will link in fipscanister.o
315 for static and shared library builds embedding a signature if needed.
318 *) Output TLS supported curves in preference order instead of numerical
319 order. This is currently hardcoded for the highest order curves first.
320 This should be configurable so applications can judge speed vs strength.
323 *) Add TLS v1.2 server support for client authentication.
326 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
330 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
331 FIPS modules versions.
334 *) Add TLS v1.2 client side support for client authentication. Keep cache
335 of handshake records longer as we don't know the hash algorithm to use
336 until after the certificate request message is received.
339 *) Initial TLS v1.2 client support. Add a default signature algorithms
340 extension including all the algorithms we support. Parse new signature
341 format in client key exchange. Relax some ECC signing restrictions for
342 TLS v1.2 as indicated in RFC5246.
345 *) Add server support for TLS v1.2 signature algorithms extension. Switch
346 to new signature format when needed using client digest preference.
347 All server ciphersuites should now work correctly in TLS v1.2. No client
348 support yet and no support for client certificates.
351 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
352 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
353 ciphersuites. At present only RSA key exchange ciphersuites work with
354 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
355 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
356 and version checking.
359 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
360 with this defined it will not be affected by any changes to ssl internal
361 structures. Add several utility functions to allow openssl application
362 to work with OPENSSL_NO_SSL_INTERN defined.
366 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
368 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
371 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
372 elliptic curve NIST-P224 with constant-time single point multiplication on
373 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
374 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
375 flexible implementations).
377 The implementation requires support for the nonstandard type __uint128_t,
378 and so is disabled by default. To include this in your build of OpenSSL,
379 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
380 and run "make depend" (or "make update").
381 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
383 *) Permit abbreviated handshakes when renegotiating using the function
384 SSL_renegotiate_abbreviated().
385 [Robin Seggelmann <seggelmann@fh-muenster.de>]
387 *) Add call to ENGINE_register_all_complete() to
388 ENGINE_load_builtin_engines(), so some implementations get used
389 automatically instead of needing explicit application support.
392 *) Add support for TLS key exporter as described in RFC5705.
393 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
395 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
396 a few changes are required:
398 Add SSL_OP_NO_TLSv1_1 flag.
400 Update version checking logic to handle version 1.1.
401 Add explicit IV handling (ported from DTLS code).
402 Add command line options to s_client/s_server.
405 Changes between 1.0.0d and 1.0.0e [xx XXX xxxx]
407 *) Add protection against ECDSA timing attacks as mentioned in the paper
408 by Billy Bob Brumley and Nicola Tuveri, see:
410 http://eprint.iacr.org/2011/232.pdf
412 [Billy Bob Brumley and Nicola Tuveri]
414 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
416 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
417 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
419 *) Fix bug in string printing code: if *any* escaping is enabled we must
420 escape the escape character (backslash) or the resulting string is
424 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
426 *) Disable code workaround for ancient and obsolete Netscape browsers
427 and servers: an attacker can use it in a ciphersuite downgrade attack.
428 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
431 *) Fixed J-PAKE implementation error, originally discovered by
432 Sebastien Martini, further info and confirmation from Stefan
433 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
436 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
438 *) Fix extension code to avoid race conditions which can result in a buffer
439 overrun vulnerability: resumed sessions must not be modified as they can
440 be shared by multiple threads. CVE-2010-3864
443 *) Fix WIN32 build system to correctly link an ENGINE directory into
447 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
449 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
451 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
453 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
455 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
456 context. The operation can be customised via the ctrl mechanism in
457 case ENGINEs want to include additional functionality.
460 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
463 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
464 output hashes compatible with older versions of OpenSSL.
465 [Willy Weisz <weisz@vcpc.univie.ac.at>]
467 *) Fix compression algorithm handling: if resuming a session use the
468 compression algorithm of the resumed session instead of determining
469 it from client hello again. Don't allow server to change algorithm.
472 *) Add load_crls() function to apps tidying load_certs() too. Add option
473 to verify utility to allow additional CRLs to be included.
476 *) Update OCSP request code to permit adding custom headers to the request:
477 some responders need this.
480 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
482 [Julia Lawall <julia@diku.dk>]
484 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
485 needlessly dereferenced structures, used obsolete functions and
486 didn't handle all updated verify codes correctly.
489 *) Disable MD2 in the default configuration.
492 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
493 indicate the initial BIO being pushed or popped. This makes it possible
494 to determine whether the BIO is the one explicitly called or as a result
495 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
496 it handles reference counts correctly and doesn't zero out the I/O bio
497 when it is not being explicitly popped. WARNING: applications which
498 included workarounds for the old buggy behaviour will need to be modified
499 or they could free up already freed BIOs.
502 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
503 renaming to all platforms (within the 0.9.8 branch, this was
504 done conditionally on Netware platforms to avoid a name clash).
505 [Guenter <lists@gknw.net>]
507 *) Add ECDHE and PSK support to DTLS.
508 [Michael Tuexen <tuexen@fh-muenster.de>]
510 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
514 *) Add "missing" function EVP_MD_flags() (without this the only way to
515 retrieve a digest flags is by accessing the structure directly. Update
516 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
517 or cipher is registered as in the "from" argument. Print out all
518 registered digests in the dgst usage message instead of manually
519 attempting to work them out.
522 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
523 this allows the use of compression and extensions. Change default cipher
524 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
525 by default unless an application cipher string requests it.
528 *) Alter match criteria in PKCS12_parse(). It used to try to use local
529 key ids to find matching certificates and keys but some PKCS#12 files
530 don't follow the (somewhat unwritten) rules and this strategy fails.
531 Now just gather all certificates together and the first private key
532 then look for the first certificate that matches the key.
535 *) Support use of registered digest and cipher names for dgst and cipher
536 commands instead of having to add each one as a special case. So now
543 openssl dgst -sha256 foo
545 and this works for ENGINE based algorithms too.
549 *) Update Gost ENGINE to support parameter files.
550 [Victor B. Wagner <vitus@cryptocom.ru>]
552 *) Support GeneralizedTime in ca utility.
553 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
555 *) Enhance the hash format used for certificate directory links. The new
556 form uses the canonical encoding (meaning equivalent names will work
557 even if they aren't identical) and uses SHA1 instead of MD5. This form
558 is incompatible with the older format and as a result c_rehash should
559 be used to rebuild symbolic links.
562 *) Make PKCS#8 the default write format for private keys, replacing the
563 traditional format. This form is standardised, more secure and doesn't
564 include an implicit MD5 dependency.
567 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
568 committed to OpenSSL should pass this lot as a minimum.
571 *) Add session ticket override functionality for use by EAP-FAST.
572 [Jouni Malinen <j@w1.fi>]
574 *) Modify HMAC functions to return a value. Since these can be implemented
575 in an ENGINE errors can occur.
578 *) Type-checked OBJ_bsearch_ex.
581 *) Type-checked OBJ_bsearch. Also some constification necessitated
582 by type-checking. Still to come: TXT_DB, bsearch(?),
583 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
587 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
588 seconds to a tm structure directly, instead of going through OS
589 specific date routines. This avoids any issues with OS routines such
590 as the year 2038 bug. New *_adj() functions for ASN1 time structures
591 and X509_time_adj_ex() to cover the extended range. The existing
592 X509_time_adj() is still usable and will no longer have any date issues.
595 *) Delta CRL support. New use deltas option which will attempt to locate
596 and search any appropriate delta CRLs available.
598 This work was sponsored by Google.
601 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
602 code and add additional score elements. Validate alternate CRL paths
603 as part of the CRL checking and indicate a new error "CRL path validation
604 error" in this case. Applications wanting additional details can use
605 the verify callback and check the new "parent" field. If this is not
606 NULL CRL path validation is taking place. Existing applications wont
607 see this because it requires extended CRL support which is off by
610 This work was sponsored by Google.
613 *) Support for freshest CRL extension.
615 This work was sponsored by Google.
618 *) Initial indirect CRL support. Currently only supported in the CRLs
619 passed directly and not via lookup. Process certificate issuer
620 CRL entry extension and lookup CRL entries by bother issuer name
621 and serial number. Check and process CRL issuer entry in IDP extension.
623 This work was sponsored by Google.
626 *) Add support for distinct certificate and CRL paths. The CRL issuer
627 certificate is validated separately in this case. Only enabled if
628 an extended CRL support flag is set: this flag will enable additional
629 CRL functionality in future.
631 This work was sponsored by Google.
634 *) Add support for policy mappings extension.
636 This work was sponsored by Google.
639 *) Fixes to pathlength constraint, self issued certificate handling,
640 policy processing to align with RFC3280 and PKITS tests.
642 This work was sponsored by Google.
645 *) Support for name constraints certificate extension. DN, email, DNS
646 and URI types are currently supported.
648 This work was sponsored by Google.
651 *) To cater for systems that provide a pointer-based thread ID rather
652 than numeric, deprecate the current numeric thread ID mechanism and
653 replace it with a structure and associated callback type. This
654 mechanism allows a numeric "hash" to be extracted from a thread ID in
655 either case, and on platforms where pointers are larger than 'long',
656 mixing is done to help ensure the numeric 'hash' is usable even if it
657 can't be guaranteed unique. The default mechanism is to use "&errno"
658 as a pointer-based thread ID to distinguish between threads.
660 Applications that want to provide their own thread IDs should now use
661 CRYPTO_THREADID_set_callback() to register a callback that will call
662 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
664 Note that ERR_remove_state() is now deprecated, because it is tied
665 to the assumption that thread IDs are numeric. ERR_remove_state(0)
666 to free the current thread's error state should be replaced by
667 ERR_remove_thread_state(NULL).
669 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
670 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
671 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
672 application was previously providing a numeric thread callback that
673 was inappropriate for distinguishing threads, then uniqueness might
674 have been obtained with &errno that happened immediately in the
675 intermediate development versions of OpenSSL; this is no longer the
676 case, the numeric thread callback will now override the automatic use
678 [Geoff Thorpe, with help from Bodo Moeller]
680 *) Initial support for different CRL issuing certificates. This covers a
681 simple case where the self issued certificates in the chain exist and
682 the real CRL issuer is higher in the existing chain.
684 This work was sponsored by Google.
687 *) Removed effectively defunct crypto/store from the build.
690 *) Revamp of STACK to provide stronger type-checking. Still to come:
691 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
692 ASN1_STRING, CONF_VALUE.
695 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
696 RAM on SSL connections. This option can save about 34k per idle SSL.
699 *) Revamp of LHASH to provide stronger type-checking. Still to come:
700 STACK, TXT_DB, bsearch, qsort.
703 *) Initial support for Cryptographic Message Syntax (aka CMS) based
704 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
705 support for data, signedData, compressedData, digestedData and
706 encryptedData, envelopedData types included. Scripts to check against
707 RFC4134 examples draft and interop and consistency checks of many
708 content types and variants.
711 *) Add options to enc utility to support use of zlib compression BIO.
714 *) Extend mk1mf to support importing of options and assembly language
715 files from Configure script, currently only included in VC-WIN32.
716 The assembly language rules can now optionally generate the source
717 files from the associated perl scripts.
720 *) Implement remaining functionality needed to support GOST ciphersuites.
721 Interop testing has been performed using CryptoPro implementations.
722 [Victor B. Wagner <vitus@cryptocom.ru>]
724 *) s390x assembler pack.
727 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
731 *) Implement Opaque PRF Input TLS extension as specified in
732 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
733 official specification yet and no extension type assignment by
734 IANA exists, this extension (for now) will have to be explicitly
735 enabled when building OpenSSL by providing the extension number
736 to use. For example, specify an option
738 -DTLSEXT_TYPE_opaque_prf_input=0x9527
740 to the "config" or "Configure" script to enable the extension,
741 assuming extension number 0x9527 (which is a completely arbitrary
742 and unofficial assignment based on the MD5 hash of the Internet
743 Draft). Note that by doing so, you potentially lose
744 interoperability with other TLS implementations since these might
745 be using the same extension number for other purposes.
747 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
748 opaque PRF input value to use in the handshake. This will create
749 an interal copy of the length-'len' string at 'src', and will
750 return non-zero for success.
752 To get more control and flexibility, provide a callback function
755 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
756 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
760 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
763 Callback function 'cb' will be called in handshakes, and is
764 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
765 Argument 'arg' is for application purposes (the value as given to
766 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
767 be provided to the callback function). The callback function
768 has to return non-zero to report success: usually 1 to use opaque
769 PRF input just if possible, or 2 to enforce use of the opaque PRF
770 input. In the latter case, the library will abort the handshake
771 if opaque PRF input is not successfully negotiated.
773 Arguments 'peerinput' and 'len' given to the callback function
774 will always be NULL and 0 in the case of a client. A server will
775 see the client's opaque PRF input through these variables if
776 available (NULL and 0 otherwise). Note that if the server
777 provides an opaque PRF input, the length must be the same as the
778 length of the client's opaque PRF input.
780 Note that the callback function will only be called when creating
781 a new session (session resumption can resume whatever was
782 previously negotiated), and will not be called in SSL 2.0
783 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
784 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
785 for applications that need to enforce opaque PRF input.
789 *) Update ssl code to support digests other than SHA1+MD5 for handshake
792 [Victor B. Wagner <vitus@cryptocom.ru>]
794 *) Add RFC4507 support to OpenSSL. This includes the corrections in
795 RFC4507bis. The encrypted ticket format is an encrypted encoded
796 SSL_SESSION structure, that way new session features are automatically
799 If a client application caches session in an SSL_SESSION structure
800 support is transparent because tickets are now stored in the encoded
803 The SSL_CTX structure automatically generates keys for ticket
804 protection in servers so again support should be possible
805 with no application modification.
807 If a client or server wishes to disable RFC4507 support then the option
808 SSL_OP_NO_TICKET can be set.
810 Add a TLS extension debugging callback to allow the contents of any client
811 or server extensions to be examined.
813 This work was sponsored by Google.
816 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
817 OpenSSL should now compile cleanly on gcc 4.2
818 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
820 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
821 support including streaming MAC support: this is required for GOST
823 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
825 *) Add option -stream to use PKCS#7 streaming in smime utility. New
826 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
827 to output in BER and PEM format.
830 *) Experimental support for use of HMAC via EVP_PKEY interface. This
831 allows HMAC to be handled via the EVP_DigestSign*() interface. The
832 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
833 ENGINE support for HMAC keys which are unextractable. New -mac and
834 -macopt options to dgst utility.
837 *) New option -sigopt to dgst utility. Update dgst to use
838 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
839 alternative signing paramaters such as X9.31 or PSS in the dgst
843 *) Change ssl_cipher_apply_rule(), the internal function that does
844 the work each time a ciphersuite string requests enabling
845 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
846 removing ("!foo+bar") a class of ciphersuites: Now it maintains
847 the order of disabled ciphersuites such that those ciphersuites
848 that most recently went from enabled to disabled not only stay
849 in order with respect to each other, but also have higher priority
850 than other disabled ciphersuites the next time ciphersuites are
853 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
854 the same ciphersuites as with "HIGH" alone, but in a specific
855 order where the PSK ciphersuites come first (since they are the
856 most recently disabled ciphersuites when "HIGH" is parsed).
858 Also, change ssl_create_cipher_list() (using this new
859 funcionality) such that between otherwise identical
860 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
864 *) Change ssl_create_cipher_list() so that it automatically
865 arranges the ciphersuites in reasonable order before starting
866 to process the rule string. Thus, the definition for "DEFAULT"
867 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
868 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
869 This makes it much easier to arrive at a reasonable default order
870 in applications for which anonymous ciphers are OK (meaning
871 that you can't actually use DEFAULT).
872 [Bodo Moeller; suggested by Victor Duchovni]
874 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
875 processing) into multiple integers instead of setting
876 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
877 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
878 (These masks as well as the individual bit definitions are hidden
879 away into the non-exported interface ssl/ssl_locl.h, so this
880 change to the definition of the SSL_CIPHER structure shouldn't
881 affect applications.) This give us more bits for each of these
882 categories, so there is no longer a need to coagulate AES128 and
883 AES256 into a single algorithm bit, and to coagulate Camellia128
884 and Camellia256 into a single algorithm bit, which has led to all
887 Thus, among other things, the kludge introduced in 0.9.7m and
888 0.9.8e for masking out AES256 independently of AES128 or masking
889 out Camellia256 independently of AES256 is not needed here in 0.9.9.
891 With the change, we also introduce new ciphersuite aliases that
892 so far were missing: "AES128", "AES256", "CAMELLIA128", and
896 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
897 Use the leftmost N bytes of the signature input if the input is
898 larger than the prime q (with N being the size in bytes of q).
901 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
902 it yet and it is largely untested.
905 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
908 *) Initial incomplete changes to avoid need for function casts in OpenSSL
909 some compilers (gcc 4.2 and later) reject their use. Safestack is
910 reimplemented. Update ASN1 to avoid use of legacy functions.
913 *) Win32/64 targets are linked with Winsock2.
916 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
917 to external functions. This can be used to increase CRL handling
918 efficiency especially when CRLs are very large by (for example) storing
919 the CRL revoked certificates in a database.
922 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
923 new CRLs added to a directory can be used. New command line option
924 -verify_return_error to s_client and s_server. This causes real errors
925 to be returned by the verify callback instead of carrying on no matter
926 what. This reflects the way a "real world" verify callback would behave.
929 *) GOST engine, supporting several GOST algorithms and public key formats.
930 Kindly donated by Cryptocom.
933 *) Partial support for Issuing Distribution Point CRL extension. CRLs
934 partitioned by DP are handled but no indirect CRL or reason partitioning
935 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
936 selected via a scoring technique which handles IDP and AKID in CRLs.
939 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
940 will ultimately be used for all verify operations: this will remove the
941 X509_STORE dependency on certificate verification and allow alternative
942 lookup methods. X509_STORE based implementations of these two callbacks.
945 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
946 Modify get_crl() to find a valid (unexpired) CRL if possible.
949 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
950 this would be called X509_CRL_cmp() but that name is already used by
951 a function that just compares CRL issuer names. Cache several CRL
952 extensions in X509_CRL structure and cache CRLDP in X509.
955 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
956 this maps equivalent X509_NAME structures into a consistent structure.
957 Name comparison can then be performed rapidly using memcmp().
960 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
964 *) Allow digests to supply their own micalg string for S/MIME type using
965 the ctrl EVP_MD_CTRL_MICALG.
968 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
969 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
970 ctrl. It can then customise the structure before and/or after signing
974 *) New function OBJ_add_sigid() to allow application defined signature OIDs
975 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
976 to free up any added signature OIDs.
979 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
980 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
981 digest and cipher tables. New options added to openssl utility:
982 list-message-digest-algorithms and list-cipher-algorithms.
985 *) Change the array representation of binary polynomials: the list
986 of degrees of non-zero coefficients is now terminated with -1.
987 Previously it was terminated with 0, which was also part of the
988 value; thus, the array representation was not applicable to
989 polynomials where t^0 has coefficient zero. This change makes
990 the array representation useful in a more general context.
993 *) Various modifications and fixes to SSL/TLS cipher string
994 handling. For ECC, the code now distinguishes between fixed ECDH
995 with RSA certificates on the one hand and with ECDSA certificates
996 on the other hand, since these are separate ciphersuites. The
997 unused code for Fortezza ciphersuites has been removed.
999 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1000 (not "ECDHE"). For consistency with the code for DH
1001 certificates, use of ECDH certificates is now considered ECDH
1002 authentication, not RSA or ECDSA authentication (the latter is
1003 merely the CA's signing algorithm and not actively used in the
1006 The temporary ciphersuite alias "ECCdraft" is no longer
1007 available, and ECC ciphersuites are no longer excluded from "ALL"
1008 and "DEFAULT". The following aliases now exist for RFC 4492
1009 ciphersuites, most of these by analogy with the DH case:
1011 kECDHr - ECDH cert, signed with RSA
1012 kECDHe - ECDH cert, signed with ECDSA
1013 kECDH - ECDH cert (signed with either RSA or ECDSA)
1014 kEECDH - ephemeral ECDH
1015 ECDH - ECDH cert or ephemeral ECDH
1021 AECDH - anonymous ECDH
1022 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1026 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1027 Use correct micalg parameters depending on digest(s) in signed message.
1030 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1031 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1034 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1035 an engine to register a method. Add ENGINE lookups for methods and
1036 functional reference processing.
1039 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1040 EVP_{Sign,Verify}* which allow an application to customise the signature
1044 *) New -resign option to smime utility. This adds one or more signers
1045 to an existing PKCS#7 signedData structure. Also -md option to use an
1046 alternative message digest algorithm for signing.
1049 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1050 create PKCS7 structures containing multiple signers. Update smime
1051 application to support multiple signers.
1054 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1058 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1059 Reorganize PBE internals to lookup from a static table using NIDs,
1060 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1061 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1062 PRF which will be automatically used with PBES2.
1065 *) Replace the algorithm specific calls to generate keys in "req" with the
1069 *) Update PKCS#7 enveloped data routines to use new API. This is now
1070 supported by any public key method supporting the encrypt operation. A
1071 ctrl is added to allow the public key algorithm to examine or modify
1072 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1076 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1077 a default digest type to use. In most cases this will be SHA1 but some
1078 algorithms (such as GOST) need to specify an alternative digest. The
1079 return value indicates how strong the prefernce is 1 means optional and
1080 2 is mandatory (that is it is the only supported type). Modify
1081 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1082 use the default md. Update openssl utilities to use the default digest
1083 type for signing if it is not explicitly indicated.
1086 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1087 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1088 signing method from the key type. This effectively removes the link
1089 between digests and public key types.
1092 *) Add an OID cross reference table and utility functions. Its purpose is to
1093 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1094 rsaEncryption. This will allow some of the algorithm specific hackery
1095 needed to use the correct OID to be removed.
1098 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1099 structures for PKCS7_sign(). They are now set up by the relevant public
1103 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1106 *) Add support for key derivation (agreement) in the API, DH method and
1110 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1111 public and private key formats. As a side effect these add additional
1112 command line functionality not previously available: DSA signatures can be
1113 generated and verified using pkeyutl and DH key support and generation in
1118 [Oliver Tappe <zooey@hirschkaefer.de>]
1120 *) New make target "install_html_docs" installs HTML renditions of the
1122 [Oliver Tappe <zooey@hirschkaefer.de>]
1124 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1125 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1126 support key and parameter generation and add initial key generation
1127 functionality for RSA.
1130 *) Add functions for main EVP_PKEY_method operations. The undocumented
1131 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1132 EVP_PKEY_{encrypt,decrypt}_old.
1135 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1136 key API, doesn't do much yet.
1139 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1140 public key algorithms. New option to openssl utility:
1141 "list-public-key-algorithms" to print out info.
1144 *) Implement the Supported Elliptic Curves Extension for
1145 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1148 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1149 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1152 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1153 utilities such as rsa, dsa, dsaparam etc except they process any key
1157 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1158 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1159 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1163 *) Initial support for pluggable public key ASN1.
1164 De-spaghettify the public key ASN1 handling. Move public and private
1165 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1166 algorithm specific handling to a single module within the relevant
1167 algorithm directory. Add functions to allow (near) opaque processing
1168 of public and private key structures.
1171 *) Implement the Supported Point Formats Extension for
1172 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1175 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1176 for the psk identity [hint] and the psk callback functions to the
1177 SSL_SESSION, SSL and SSL_CTX structure.
1180 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1184 SSL_CTX_use_psk_identity_hint
1185 SSL_get_psk_identity_hint
1186 SSL_get_psk_identity
1187 SSL_use_psk_identity_hint
1189 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1191 *) Add RFC 3161 compliant time stamp request creation, response generation
1192 and response verification functionality.
1193 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1195 *) Add initial support for TLS extensions, specifically for the server_name
1196 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1197 have new members for a host name. The SSL data structure has an
1198 additional member SSL_CTX *initial_ctx so that new sessions can be
1199 stored in that context to allow for session resumption, even after the
1200 SSL has been switched to a new SSL_CTX in reaction to a client's
1201 server_name extension.
1203 New functions (subject to change):
1205 SSL_get_servername()
1206 SSL_get_servername_type()
1209 New CTRL codes and macros (subject to change):
1211 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1212 - SSL_CTX_set_tlsext_servername_callback()
1213 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1214 - SSL_CTX_set_tlsext_servername_arg()
1215 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1217 openssl s_client has a new '-servername ...' option.
1219 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1220 '-key2 ...', '-servername_fatal' (subject to change). This allows
1221 testing the HostName extension for a specific single host name ('-cert'
1222 and '-key' remain fallbacks for handshakes without HostName
1223 negotiation). If the unrecogninzed_name alert has to be sent, this by
1224 default is a warning; it becomes fatal with the '-servername_fatal'
1227 [Peter Sylvester, Remy Allais, Christophe Renou]
1229 *) Whirlpool hash implementation is added.
1232 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1233 bn(64,32). Because of instruction set limitations it doesn't have
1234 any negative impact on performance. This was done mostly in order
1235 to make it possible to share assembler modules, such as bn_mul_mont
1236 implementations, between 32- and 64-bit builds without hassle.
1239 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1240 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1244 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1245 dedicated Montgomery multiplication procedure, is introduced.
1246 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1247 "64-bit" performance on certain 32-bit targets.
1250 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1251 in SSL structures. New SSL ctrl to set maximum send fragment size.
1252 Save memory by seeting the I/O buffer sizes dynamically instead of
1253 using the maximum available value.
1256 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1257 in addition to the text details.
1260 *) Very, very preliminary EXPERIMENTAL support for printing of general
1261 ASN1 structures. This currently produces rather ugly output and doesn't
1262 handle several customised structures at all.
1265 *) Integrated support for PVK file format and some related formats such
1266 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1267 these in the 'rsa' and 'dsa' utilities.
1270 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1273 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1274 place for the (very old) "NETSCAPE" format certificates which are now
1275 handled using new ASN1 code equivalents.
1278 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1279 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1280 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1283 *) Modify CRL distribution points extension code to print out previously
1284 unsupported fields. Enhance extension setting code to allow setting of
1288 *) Add print and set support for Issuing Distribution Point CRL extension.
1291 *) Change 'Configure' script to enable Camellia by default.
1294 Changes between 0.9.8r and 0.9.8s [xx XXX xxxx]
1296 *) Add protection against ECDSA timing attacks as mentioned in the paper
1297 by Billy Bob Brumley and Nicola Tuveri, see:
1299 http://eprint.iacr.org/2011/232.pdf
1301 [Billy Bob Brumley and Nicola Tuveri]
1303 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1305 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1306 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1308 *) Fix bug in string printing code: if *any* escaping is enabled we must
1309 escape the escape character (backslash) or the resulting string is
1313 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1315 *) Disable code workaround for ancient and obsolete Netscape browsers
1316 and servers: an attacker can use it in a ciphersuite downgrade attack.
1317 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1320 *) Fixed J-PAKE implementation error, originally discovered by
1321 Sebastien Martini, further info and confirmation from Stefan
1322 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1325 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1327 *) Fix extension code to avoid race conditions which can result in a buffer
1328 overrun vulnerability: resumed sessions must not be modified as they can
1329 be shared by multiple threads. CVE-2010-3864
1332 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1335 *) Don't reencode certificate when calculating signature: cache and use
1336 the original encoding instead. This makes signature verification of
1337 some broken encodings work correctly.
1340 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1341 is also one of the inputs.
1342 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1344 *) Don't repeatedly append PBE algorithms to table if they already exist.
1345 Sort table on each new add. This effectively makes the table read only
1346 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1350 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1352 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1355 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1356 access or freeing data twice (CVE-2010-0742)
1357 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1359 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1360 common in certificates and some applications which only call
1361 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1365 Reduce copying into .apps and .test in makevms.com
1366 Don't try to use blank CA certificate in CA.com
1367 Allow use of C files from original directories in maketests.com
1368 [Steven M. Schweda" <sms@antinode.info>]
1370 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1372 *) When rejecting SSL/TLS records due to an incorrect version number, never
1373 update s->server with a new major version number. As of
1374 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1375 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1376 the previous behavior could result in a read attempt at NULL when
1377 receiving specific incorrect SSL/TLS records once record payload
1378 protection is active. (CVE-2010-0740)
1379 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1381 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1382 could be crashed if the relevant tables were not present (e.g. chrooted).
1383 [Tomas Hoger <thoger@redhat.com>]
1385 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1387 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1388 [Martin Olsson, Neel Mehta]
1390 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1391 accommodate for stack sorting, always a write lock!).
1394 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1395 excessive delays in the RAND_poll(): over a minute. As a workaround
1396 include a time check in the inner Heap32Next loop too.
1399 *) The code that handled flushing of data in SSL/TLS originally used the
1400 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1401 the problem outlined in PR#1949. The fix suggested there however can
1402 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1403 of Apache). So instead simplify the code to flush unconditionally.
1404 This should be fine since flushing with no data to flush is a no op.
1407 *) Handle TLS versions 2.0 and later properly and correctly use the
1408 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1409 off ancient servers have a habit of sticking around for a while...
1412 *) Modify compression code so it frees up structures without using the
1413 ex_data callbacks. This works around a problem where some applications
1414 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1415 restarting) then use compression (e.g. SSL with compression) later.
1416 This results in significant per-connection memory leaks and
1417 has caused some security issues including CVE-2008-1678 and
1421 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1422 change when encrypting or decrypting.
1425 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1426 connect and renegotiate with servers which do not support RI.
1427 Until RI is more widely deployed this option is enabled by default.
1430 *) Add "missing" ssl ctrls to clear options and mode.
1433 *) If client attempts to renegotiate and doesn't support RI respond with
1434 a no_renegotiation alert as required by RFC5746. Some renegotiating
1435 TLS clients will continue a connection gracefully when they receive
1436 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1437 waiting for a server hello which it will never receive. Now we treat a
1438 received no_renegotiation alert as a fatal error. This is because
1439 applications requesting a renegotiation might well expect it to succeed
1440 and would have no code in place to handle the server denying it so the
1441 only safe thing to do is to terminate the connection.
1444 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1445 peer supports secure renegotiation and 0 otherwise. Print out peer
1446 renegotiation support in s_client/s_server.
1449 *) Replace the highly broken and deprecated SPKAC certification method with
1450 the updated NID creation version. This should correctly handle UTF8.
1453 *) Implement RFC5746. Re-enable renegotiation but require the extension
1454 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1455 turns out to be a bad idea. It has been replaced by
1456 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1457 SSL_CTX_set_options(). This is really not recommended unless you
1458 know what you are doing.
1459 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1461 *) Fixes to stateless session resumption handling. Use initial_ctx when
1462 issuing and attempting to decrypt tickets in case it has changed during
1463 servername handling. Use a non-zero length session ID when attempting
1464 stateless session resumption: this makes it possible to determine if
1465 a resumption has occurred immediately after receiving server hello
1466 (several places in OpenSSL subtly assume this) instead of later in
1470 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1471 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1472 fixes for a few places where the return code is not checked
1474 [Julia Lawall <julia@diku.dk>]
1476 *) Add --strict-warnings option to Configure script to include devteam
1477 warnings in other configurations.
1480 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1481 makes it possible to install openssl libraries in locations which
1482 have names other than "lib", for example "/usr/lib64" which some
1484 [Steve Henson, based on patch from Jeremy Utley]
1486 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1487 X690 8.9.12 and can produce some misleading textual output of OIDs.
1488 [Steve Henson, reported by Dan Kaminsky]
1490 *) Delete MD2 from algorithm tables. This follows the recommendation in
1491 several standards that it is not used in new applications due to
1492 several cryptographic weaknesses. For binary compatibility reasons
1493 the MD2 API is still compiled in by default.
1496 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1500 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1501 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1503 [Guenter <lists@gknw.net>]
1505 *) Fix the server certificate chain building code to use X509_verify_cert(),
1506 it used to have an ad-hoc builder which was unable to cope with anything
1507 other than a simple chain.
1508 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1510 *) Don't check self signed certificate signatures in X509_verify_cert()
1511 by default (a flag can override this): it just wastes time without
1512 adding any security. As a useful side effect self signed root CAs
1513 with non-FIPS digests are now usable in FIPS mode.
1516 *) In dtls1_process_out_of_seq_message() the check if the current message
1517 is already buffered was missing. For every new message was memory
1518 allocated, allowing an attacker to perform an denial of service attack
1519 with sending out of seq handshake messages until there is no memory
1520 left. Additionally every future messege was buffered, even if the
1521 sequence number made no sense and would be part of another handshake.
1522 So only messages with sequence numbers less than 10 in advance will be
1523 buffered. (CVE-2009-1378)
1524 [Robin Seggelmann, discovered by Daniel Mentz]
1526 *) Records are buffered if they arrive with a future epoch to be
1527 processed after finishing the corresponding handshake. There is
1528 currently no limitation to this buffer allowing an attacker to perform
1529 a DOS attack with sending records with future epochs until there is no
1530 memory left. This patch adds the pqueue_size() function to detemine
1531 the size of a buffer and limits the record buffer to 100 entries.
1533 [Robin Seggelmann, discovered by Daniel Mentz]
1535 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1536 parent structure is freed. (CVE-2009-1379)
1539 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1540 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1543 [Ilya O. <vrghost@gmail.com>]
1545 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1547 *) Disable renegotiation completely - this fixes a severe security
1548 problem (CVE-2009-3555) at the cost of breaking all
1549 renegotiation. Renegotiation can be re-enabled by setting
1550 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1551 run-time. This is really not recommended unless you know what
1555 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1557 *) Don't set val to NULL when freeing up structures, it is freed up by
1558 underlying code. If sizeof(void *) > sizeof(long) this can result in
1559 zeroing past the valid field. (CVE-2009-0789)
1560 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1562 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1563 checked correctly. This would allow some invalid signed attributes to
1564 appear to verify correctly. (CVE-2009-0591)
1565 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1567 *) Reject UniversalString and BMPString types with invalid lengths. This
1568 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1569 a legal length. (CVE-2009-0590)
1572 *) Set S/MIME signing as the default purpose rather than setting it
1573 unconditionally. This allows applications to override it at the store
1577 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1578 to handle some structures.
1581 *) Improve efficiency of mem_gets: don't search whole buffer each time
1583 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1585 *) New -hex option for openssl rand.
1588 *) Print out UTF8String and NumericString when parsing ASN1.
1591 *) Support NumericString type for name components.
1594 *) Allow CC in the environment to override the automatically chosen
1595 compiler. Note that nothing is done to ensure flags work with the
1599 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1601 *) Properly check EVP_VerifyFinal() and similar return values
1603 [Ben Laurie, Bodo Moeller, Google Security Team]
1605 *) Enable TLS extensions by default.
1608 *) Allow the CHIL engine to be loaded, whether the application is
1609 multithreaded or not. (This does not release the developer from the
1610 obligation to set up the dynamic locking callbacks.)
1611 [Sander Temme <sander@temme.net>]
1613 *) Use correct exit code if there is an error in dgst command.
1614 [Steve Henson; problem pointed out by Roland Dirlewanger]
1616 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1617 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1620 *) Add experimental JPAKE support, including demo authentication in
1621 s_client and s_server.
1624 *) Set the comparison function in v3_addr_canonize().
1625 [Rob Austein <sra@hactrn.net>]
1627 *) Add support for XMPP STARTTLS in s_client.
1628 [Philip Paeps <philip@freebsd.org>]
1630 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1631 to ensure that even with this option, only ciphersuites in the
1632 server's preference list will be accepted. (Note that the option
1633 applies only when resuming a session, so the earlier behavior was
1634 just about the algorithm choice for symmetric cryptography.)
1637 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1639 *) Fix NULL pointer dereference if a DTLS server received
1640 ChangeCipherSpec as first record (CVE-2009-1386).
1643 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1644 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1647 *) The fix in 0.9.8c that supposedly got rid of unsafe
1648 double-checked locking was incomplete for RSA blinding,
1649 addressing just one layer of what turns out to have been
1650 doubly unsafe triple-checked locking.
1652 So now fix this for real by retiring the MONT_HELPER macro
1653 in crypto/rsa/rsa_eay.c.
1655 [Bodo Moeller; problem pointed out by Marius Schilder]
1657 *) Various precautionary measures:
1659 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1661 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1662 (NB: This would require knowledge of the secret session ticket key
1663 to exploit, in which case you'd be SOL either way.)
1665 - Change bn_nist.c so that it will properly handle input BIGNUMs
1666 outside the expected range.
1668 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1671 [Neel Mehta, Bodo Moeller]
1673 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1674 the load fails. Useful for distros.
1675 [Ben Laurie and the FreeBSD team]
1677 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1680 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1683 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1685 This work was sponsored by Logica.
1688 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1689 keystores. Support for SSL/TLS client authentication too.
1690 Not compiled unless enable-capieng specified to Configure.
1692 This work was sponsored by Logica.
1695 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1696 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1697 attribute creation routines such as certifcate requests and PKCS#12
1701 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1703 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1704 handshake which could lead to a cilent crash as found using the
1705 Codenomicon TLS test suite (CVE-2008-1672)
1706 [Steve Henson, Mark Cox]
1708 *) Fix double free in TLS server name extensions which could lead to
1709 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1712 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1714 Clear the error queue to ensure that error entries left from
1715 older function calls do not interfere with the correct operation.
1716 [Lutz Jaenicke, Erik de Castro Lopo]
1718 *) Remove root CA certificates of commercial CAs:
1720 The OpenSSL project does not recommend any specific CA and does not
1721 have any policy with respect to including or excluding any CA.
1722 Therefore it does not make any sense to ship an arbitrary selection
1723 of root CA certificates with the OpenSSL software.
1726 *) RSA OAEP patches to fix two separate invalid memory reads.
1727 The first one involves inputs when 'lzero' is greater than
1728 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1729 before the beginning of from). The second one involves inputs where
1730 the 'db' section contains nothing but zeroes (there is a one-byte
1731 invalid read after the end of 'db').
1732 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1734 *) Partial backport from 0.9.9-dev:
1736 Introduce bn_mul_mont (dedicated Montgomery multiplication
1737 procedure) as a candidate for BIGNUM assembler implementation.
1738 While 0.9.9-dev uses assembler for various architectures, only
1739 x86_64 is available by default here in the 0.9.8 branch, and
1740 32-bit x86 is available through a compile-time setting.
1742 To try the 32-bit x86 assembler implementation, use Configure
1743 option "enable-montasm" (which exists only for this backport).
1745 As "enable-montasm" for 32-bit x86 disclaims code stability
1746 anyway, in this constellation we activate additional code
1747 backported from 0.9.9-dev for further performance improvements,
1748 namely BN_from_montgomery_word. (To enable this otherwise,
1749 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1751 [Andy Polyakov (backport partially by Bodo Moeller)]
1753 *) Add TLS session ticket callback. This allows an application to set
1754 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1755 values. This is useful for key rollover for example where several key
1756 sets may exist with different names.
1759 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1760 This was broken until now in 0.9.8 releases, such that the only way
1761 a registered ENGINE could be used (assuming it initialises
1762 successfully on the host) was to explicitly set it as the default
1763 for the relevant algorithms. This is in contradiction with 0.9.7
1764 behaviour and the documentation. With this fix, when an ENGINE is
1765 registered into a given algorithm's table of implementations, the
1766 'uptodate' flag is reset so that auto-discovery will be used next
1767 time a new context for that algorithm attempts to select an
1769 [Ian Lister (tweaked by Geoff Thorpe)]
1771 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1772 implemention in the following ways:
1774 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1777 Lack of BER streaming support means one pass streaming processing is
1778 only supported if data is detached: setting the streaming flag is
1779 ignored for embedded content.
1781 CMS support is disabled by default and must be explicitly enabled
1782 with the enable-cms configuration option.
1785 *) Update the GMP engine glue to do direct copies between BIGNUM and
1786 mpz_t when openssl and GMP use the same limb size. Otherwise the
1787 existing "conversion via a text string export" trick is still used.
1788 [Paul Sheer <paulsheer@gmail.com>]
1790 *) Zlib compression BIO. This is a filter BIO which compressed and
1791 uncompresses any data passed through it.
1794 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1795 RFC3394 compatible AES key wrapping.
1798 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1799 sets string data without copying. X509_ALGOR_set0() and
1800 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1801 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1802 from an X509_ATTRIBUTE structure optionally checking it occurs only
1803 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1807 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1808 to get the expected BN_FLG_CONSTTIME behavior.
1809 [Bodo Moeller (Google)]
1813 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1814 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1815 - added some more tests to do_tests.pl
1816 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1817 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1818 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1819 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1820 - various changes to netware.pl to enable gcc-cross builds on Win32
1822 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1823 - various changes to fix missing prototype warnings
1824 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1825 - added AES, WHIRLPOOL and CPUID assembler code to build files
1826 - added missing AES assembler make rules to mk1mf.pl
1827 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1828 [Guenter Knauf <eflash@gmx.net>]
1830 *) Implement certificate status request TLS extension defined in RFC3546.
1831 A client can set the appropriate parameters and receive the encoded
1832 OCSP response via a callback. A server can query the supplied parameters
1833 and set the encoded OCSP response in the callback. Add simplified examples
1834 to s_client and s_server.
1837 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1839 *) Fix various bugs:
1840 + Binary incompatibility of ssl_ctx_st structure
1841 + DTLS interoperation with non-compliant servers
1842 + Don't call get_session_cb() without proposed session
1843 + Fix ia64 assembler code
1844 [Andy Polyakov, Steve Henson]
1846 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1848 *) DTLS Handshake overhaul. There were longstanding issues with
1849 OpenSSL DTLS implementation, which were making it impossible for
1850 RFC 4347 compliant client to communicate with OpenSSL server.
1851 Unfortunately just fixing these incompatibilities would "cut off"
1852 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1853 server keeps tolerating non RFC compliant syntax. The opposite is
1854 not true, 0.9.8f client can not communicate with earlier server.
1855 This update even addresses CVE-2007-4995.
1858 *) Changes to avoid need for function casts in OpenSSL: some compilers
1859 (gcc 4.2 and later) reject their use.
1860 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1863 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1864 RFC4507bis. The encrypted ticket format is an encrypted encoded
1865 SSL_SESSION structure, that way new session features are automatically
1868 If a client application caches session in an SSL_SESSION structure
1869 support is transparent because tickets are now stored in the encoded
1872 The SSL_CTX structure automatically generates keys for ticket
1873 protection in servers so again support should be possible
1874 with no application modification.
1876 If a client or server wishes to disable RFC4507 support then the option
1877 SSL_OP_NO_TICKET can be set.
1879 Add a TLS extension debugging callback to allow the contents of any client
1880 or server extensions to be examined.
1882 This work was sponsored by Google.
1885 *) Add initial support for TLS extensions, specifically for the server_name
1886 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1887 have new members for a host name. The SSL data structure has an
1888 additional member SSL_CTX *initial_ctx so that new sessions can be
1889 stored in that context to allow for session resumption, even after the
1890 SSL has been switched to a new SSL_CTX in reaction to a client's
1891 server_name extension.
1893 New functions (subject to change):
1895 SSL_get_servername()
1896 SSL_get_servername_type()
1899 New CTRL codes and macros (subject to change):
1901 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1902 - SSL_CTX_set_tlsext_servername_callback()
1903 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1904 - SSL_CTX_set_tlsext_servername_arg()
1905 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1907 openssl s_client has a new '-servername ...' option.
1909 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1910 '-key2 ...', '-servername_fatal' (subject to change). This allows
1911 testing the HostName extension for a specific single host name ('-cert'
1912 and '-key' remain fallbacks for handshakes without HostName
1913 negotiation). If the unrecogninzed_name alert has to be sent, this by
1914 default is a warning; it becomes fatal with the '-servername_fatal'
1917 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1919 *) Add AES and SSE2 assembly language support to VC++ build.
1922 *) Mitigate attack on final subtraction in Montgomery reduction.
1925 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1926 (which previously caused an internal error).
1929 *) Squeeze another 10% out of IGE mode when in != out.
1932 *) AES IGE mode speedup.
1933 [Dean Gaudet (Google)]
1935 *) Add the Korean symmetric 128-bit cipher SEED (see
1936 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1937 add SEED ciphersuites from RFC 4162:
1939 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1940 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1941 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1942 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1944 To minimize changes between patchlevels in the OpenSSL 0.9.8
1945 series, SEED remains excluded from compilation unless OpenSSL
1946 is configured with 'enable-seed'.
1947 [KISA, Bodo Moeller]
1949 *) Mitigate branch prediction attacks, which can be practical if a
1950 single processor is shared, allowing a spy process to extract
1951 information. For detailed background information, see
1952 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1953 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1954 and Necessary Software Countermeasures"). The core of the change
1955 are new versions BN_div_no_branch() and
1956 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1957 respectively, which are slower, but avoid the security-relevant
1958 conditional branches. These are automatically called by BN_div()
1959 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1960 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1961 remove a conditional branch.
1963 BN_FLG_CONSTTIME is the new name for the previous
1964 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1965 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1966 in the exponent causes BN_mod_exp_mont() to use the alternative
1967 implementation in BN_mod_exp_mont_consttime().) The old name
1968 remains as a deprecated alias.
1970 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1971 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1972 constant-time implementations for more than just exponentiation.
1973 Here too the old name is kept as a deprecated alias.
1975 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1976 the BN_BLINDING structure gets an independent copy of the
1977 modulus. This means that the previous "BIGNUM *m" argument to
1978 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1979 essentially becomes "const BIGNUM *m", although we can't actually
1980 change this in the header file before 0.9.9. It allows
1981 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1982 enable BN_FLG_CONSTTIME.
1984 [Matthew D Wood (Intel Corp)]
1986 *) In the SSL/TLS server implementation, be strict about session ID
1987 context matching (which matters if an application uses a single
1988 external cache for different purposes). Previously,
1989 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1990 set. This did ensure strict client verification, but meant that,
1991 with applications using a single external cache for quite
1992 different requirements, clients could circumvent ciphersuite
1993 restrictions for a given session ID context by starting a session
1994 in a different context.
1997 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1998 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1999 authentication-only ciphersuites.
2002 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2003 not complete and could lead to a possible single byte overflow
2004 (CVE-2007-5135) [Ben Laurie]
2006 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2008 *) Since AES128 and AES256 (and similarly Camellia128 and
2009 Camellia256) share a single mask bit in the logic of
2010 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2011 kludge to work properly if AES128 is available and AES256 isn't
2012 (or if Camellia128 is available and Camellia256 isn't).
2015 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2016 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2017 When a point or a seed is encoded in a BIT STRING, we need to
2018 prevent the removal of trailing zero bits to get the proper DER
2019 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2020 of a NamedBitList, for which trailing 0 bits need to be removed.)
2023 *) Have SSL/TLS server implementation tolerate "mismatched" record
2024 protocol version while receiving ClientHello even if the
2025 ClientHello is fragmented. (The server can't insist on the
2026 particular protocol version it has chosen before the ServerHello
2027 message has informed the client about his choice.)
2030 *) Add RFC 3779 support.
2031 [Rob Austein for ARIN, Ben Laurie]
2033 *) Load error codes if they are not already present instead of using a
2034 static variable. This allows them to be cleanly unloaded and reloaded.
2035 Improve header file function name parsing.
2038 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2039 or CAPABILITY handshake as required by RFCs.
2042 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2044 *) Introduce limits to prevent malicious keys being able to
2045 cause a denial of service. (CVE-2006-2940)
2046 [Steve Henson, Bodo Moeller]
2048 *) Fix ASN.1 parsing of certain invalid structures that can result
2049 in a denial of service. (CVE-2006-2937) [Steve Henson]
2051 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2052 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2054 *) Fix SSL client code which could crash if connecting to a
2055 malicious SSLv2 server. (CVE-2006-4343)
2056 [Tavis Ormandy and Will Drewry, Google Security Team]
2058 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2059 match only those. Before that, "AES256-SHA" would be interpreted
2060 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2061 the same strength classification in 0.9.7h) as we currently only
2062 have a single AES bit in the ciphersuite description bitmap.
2063 That change, however, also applied to ciphersuite strings such as
2064 "RC4-MD5" that intentionally matched multiple ciphersuites --
2065 namely, SSL 2.0 ciphersuites in addition to the more common ones
2066 from SSL 3.0/TLS 1.0.
2068 So we change the selection algorithm again: Naming an explicit
2069 ciphersuite selects this one ciphersuite, and any other similar
2070 ciphersuite (same bitmap) from *other* protocol versions.
2071 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2072 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2074 Since SSL 2.0 does not have any ciphersuites for which the
2075 128/256 bit distinction would be relevant, this works for now.
2076 The proper fix will be to use different bits for AES128 and
2077 AES256, which would have avoided the problems from the beginning;
2078 however, bits are scarce, so we can only do this in a new release
2079 (not just a patchlevel) when we can change the SSL_CIPHER
2080 definition to split the single 'unsigned long mask' bitmap into
2081 multiple values to extend the available space.
2085 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2087 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2088 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2090 *) Add AES IGE and biIGE modes.
2093 *) Change the Unix randomness entropy gathering to use poll() when
2094 possible instead of select(), since the latter has some
2095 undesirable limitations.
2096 [Darryl Miles via Richard Levitte and Bodo Moeller]
2098 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2099 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2100 cannot be implicitly activated as part of, e.g., the "AES" alias.
2101 However, please upgrade to OpenSSL 0.9.9[-dev] for
2102 non-experimental use of the ECC ciphersuites to get TLS extension
2103 support, which is required for curve and point format negotiation
2104 to avoid potential handshake problems.
2107 *) Disable rogue ciphersuites:
2109 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2110 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2111 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2113 The latter two were purportedly from
2114 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2117 Also deactivate the remaining ciphersuites from
2118 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2119 unofficial, and the ID has long expired.
2122 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2123 dual-core machines) and other potential thread-safety issues.
2126 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2127 versions), which is now available for royalty-free use
2128 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2129 Also, add Camellia TLS ciphersuites from RFC 4132.
2131 To minimize changes between patchlevels in the OpenSSL 0.9.8
2132 series, Camellia remains excluded from compilation unless OpenSSL
2133 is configured with 'enable-camellia'.
2136 *) Disable the padding bug check when compression is in use. The padding
2137 bug check assumes the first packet is of even length, this is not
2138 necessarily true if compresssion is enabled and can result in false
2139 positives causing handshake failure. The actual bug test is ancient
2140 code so it is hoped that implementations will either have fixed it by
2141 now or any which still have the bug do not support compression.
2144 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2146 *) When applying a cipher rule check to see if string match is an explicit
2147 cipher suite and only match that one cipher suite if it is.
2150 *) Link in manifests for VC++ if needed.
2151 [Austin Ziegler <halostatue@gmail.com>]
2153 *) Update support for ECC-based TLS ciphersuites according to
2154 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2155 TLS extensions, which are supported starting with the 0.9.9
2156 branch, not in the OpenSSL 0.9.8 branch).
2159 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2160 opaque EVP_CIPHER_CTX handling.
2163 *) Fixes and enhancements to zlib compression code. We now only use
2164 "zlib1.dll" and use the default __cdecl calling convention on Win32
2165 to conform with the standards mentioned here:
2166 http://www.zlib.net/DLL_FAQ.txt
2167 Static zlib linking now works on Windows and the new --with-zlib-include
2168 --with-zlib-lib options to Configure can be used to supply the location
2169 of the headers and library. Gracefully handle case where zlib library
2173 *) Several fixes and enhancements to the OID generation code. The old code
2174 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2175 handle numbers larger than ULONG_MAX, truncated printing and had a
2176 non standard OBJ_obj2txt() behaviour.
2179 *) Add support for building of engines under engine/ as shared libraries
2180 under VC++ build system.
2183 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2184 Hopefully, we will not see any false combination of paths any more.
2187 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2189 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2190 (part of SSL_OP_ALL). This option used to disable the
2191 countermeasure against man-in-the-middle protocol-version
2192 rollback in the SSL 2.0 server implementation, which is a bad
2193 idea. (CVE-2005-2969)
2195 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2196 for Information Security, National Institute of Advanced Industrial
2197 Science and Technology [AIST], Japan)]
2199 *) Add two function to clear and return the verify parameter flags.
2202 *) Keep cipherlists sorted in the source instead of sorting them at
2203 runtime, thus removing the need for a lock.
2206 *) Avoid some small subgroup attacks in Diffie-Hellman.
2207 [Nick Mathewson and Ben Laurie]
2209 *) Add functions for well-known primes.
2212 *) Extended Windows CE support.
2213 [Satoshi Nakamura and Andy Polyakov]
2215 *) Initialize SSL_METHOD structures at compile time instead of during
2216 runtime, thus removing the need for a lock.
2219 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2220 attempting to decrypt each encrypted key in turn. Add support to
2224 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2226 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2229 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2232 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2233 key into the same file any more.
2236 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2239 *) Add -utf8 command line and config file option to 'ca'.
2240 [Stefan <stf@udoma.org]
2242 *) Removed the macro des_crypt(), as it seems to conflict with some
2243 libraries. Use DES_crypt().
2246 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2247 involves renaming the source and generated shared-libs for
2248 both. The engines will accept the corrected or legacy ids
2249 ('ncipher' and '4758_cca' respectively) when binding. NB,
2250 this only applies when building 'shared'.
2251 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2253 *) Add attribute functions to EVP_PKEY structure. Modify
2254 PKCS12_create() to recognize a CSP name attribute and
2255 use it. Make -CSP option work again in pkcs12 utility.
2258 *) Add new functionality to the bn blinding code:
2259 - automatic re-creation of the BN_BLINDING parameters after
2260 a fixed number of uses (currently 32)
2261 - add new function for parameter creation
2262 - introduce flags to control the update behaviour of the
2263 BN_BLINDING parameters
2264 - hide BN_BLINDING structure
2265 Add a second BN_BLINDING slot to the RSA structure to improve
2266 performance when a single RSA object is shared among several
2270 *) Add support for DTLS.
2271 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2273 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2274 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2277 *) Remove buggy and incompletet DH cert support from
2278 ssl/ssl_rsa.c and ssl/s3_both.c
2281 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2282 the apps/openssl applications.
2285 *) Compile clean with "-Wall -Wmissing-prototypes
2286 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2287 DEBUG_SAFESTACK must also be set.
2290 *) Change ./Configure so that certain algorithms can be disabled by default.
2291 The new counterpiece to "no-xxx" is "enable-xxx".
2293 The patented RC5 and MDC2 algorithms will now be disabled unless
2294 "enable-rc5" and "enable-mdc2", respectively, are specified.
2296 (IDEA remains enabled despite being patented. This is because IDEA
2297 is frequently required for interoperability, and there is no license
2298 fee for non-commercial use. As before, "no-idea" can be used to
2299 avoid this algorithm.)
2303 *) Add processing of proxy certificates (see RFC 3820). This work was
2304 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2305 EGEE (Enabling Grids for E-science in Europe).
2308 *) RC4 performance overhaul on modern architectures/implementations, such
2309 as Intel P4, IA-64 and AMD64.
2312 *) New utility extract-section.pl. This can be used specify an alternative
2313 section number in a pod file instead of having to treat each file as
2314 a separate case in Makefile. This can be done by adding two lines to the
2317 =for comment openssl_section:XXX
2319 The blank line is mandatory.
2323 *) New arguments -certform, -keyform and -pass for s_client and s_server
2324 to allow alternative format key and certificate files and passphrase
2328 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2329 update associated structures and add various utility functions.
2331 Add new policy related verify parameters, include policy checking in
2332 standard verify code. Enhance 'smime' application with extra parameters
2333 to support policy checking and print out.
2336 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2337 Nehemiah processors. These extensions support AES encryption in hardware
2338 as well as RNG (though RNG support is currently disabled).
2339 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2341 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2344 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2345 [Andy Polyakov and a number of other people]
2347 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2348 implementation contributed by IBM.
2349 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2351 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2352 exponent rather than 'unsigned long'. There is a corresponding change to
2353 the new 'rsa_keygen' element of the RSA_METHOD structure.
2354 [Jelte Jansen, Geoff Thorpe]
2356 *) Functionality for creating the initial serial number file is now
2357 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2359 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2360 number file to 1, which is bound to cause problems. To avoid
2361 the problems while respecting compatibility between different 0.9.7
2362 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2363 CA.pl for serial number initialization. With the new release 0.9.8,
2364 we can fix the problem directly in the 'ca' utility.)
2367 *) Reduced header interdepencies by declaring more opaque objects in
2368 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2369 give fewer recursive includes, which could break lazy source code - so
2370 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2371 developers should define this symbol when building and using openssl to
2372 ensure they track the recommended behaviour, interfaces, [etc], but
2373 backwards-compatible behaviour prevails when this isn't defined.
2376 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2379 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2380 This will generate a random key of the appropriate length based on the
2381 cipher context. The EVP_CIPHER can provide its own random key generation
2382 routine to support keys of a specific form. This is used in the des and
2383 3des routines to generate a key of the correct parity. Update S/MIME
2384 code to use new functions and hence generate correct parity DES keys.
2385 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2386 valid (weak or incorrect parity).
2389 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2390 as looking them up. This is useful when the verified structure may contain
2391 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2392 present unless the new PKCS7_NO_CRL flag is asserted.
2395 *) Extend ASN1 oid configuration module. It now additionally accepts the
2398 shortName = some long name, 1.2.3.4
2401 *) Reimplemented the BN_CTX implementation. There is now no more static
2402 limitation on the number of variables it can handle nor the depth of the
2403 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2404 information can now expand as required, and rather than having a single
2405 static array of bignums, BN_CTX now uses a linked-list of such arrays
2406 allowing it to expand on demand whilst maintaining the usefulness of
2407 BN_CTX's "bundling".
2410 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2411 to allow all RSA operations to function using a single BN_CTX.
2414 *) Preliminary support for certificate policy evaluation and checking. This
2415 is initially intended to pass the tests outlined in "Conformance Testing
2416 of Relying Party Client Certificate Path Processing Logic" v1.07.
2419 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2420 remained unused and not that useful. A variety of other little bignum
2421 tweaks and fixes have also been made continuing on from the audit (see
2425 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2426 associated ASN1, EVP and SSL functions and old ASN1 macros.
2429 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2430 and this should never fail. So the return value from the use of
2431 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2432 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2435 *) BN_CTX_get() should return zero-valued bignums, providing the same
2436 initialised value as BN_new().
2437 [Geoff Thorpe, suggested by Ulf Möller]
2439 *) Support for inhibitAnyPolicy certificate extension.
2442 *) An audit of the BIGNUM code is underway, for which debugging code is
2443 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2444 is considered valid when processing BIGNUMs, and causes execution to
2445 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2446 further steps are taken to deliberately pollute unused data in BIGNUM
2447 structures to try and expose faulty code further on. For now, openssl will
2448 (in its default mode of operation) continue to tolerate the inconsistent
2449 forms that it has tolerated in the past, but authors and packagers should
2450 consider trying openssl and their own applications when compiled with
2451 these debugging symbols defined. It will help highlight potential bugs in
2452 their own code, and will improve the test coverage for OpenSSL itself. At
2453 some point, these tighter rules will become openssl's default to improve
2454 maintainability, though the assert()s and other overheads will remain only
2455 in debugging configurations. See bn.h for more details.
2456 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2458 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2459 that can only be obtained through BN_CTX_new() (which implicitly
2460 initialises it). The presence of this function only made it possible
2461 to overwrite an existing structure (and cause memory leaks).
2464 *) Because of the callback-based approach for implementing LHASH as a
2465 template type, lh_insert() adds opaque objects to hash-tables and
2466 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2467 to clean up those corresponding objects before destroying the hash table
2468 (and losing the object pointers). So some over-zealous constifications in
2469 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2470 objects as "const" and the lh_doall[_arg] callback wrappers are not
2471 prototyped to have "const" restrictions on the object pointers they are
2472 given (and so aren't required to cast them away any more).
2475 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2476 (speed) prefers to use its own implementation. The two implementations
2477 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2478 its object type properly exposed (MS_TM) instead of casting to/from "char
2479 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2480 aren't necessarily the greatest nomenclatures - but this is what was used
2481 internally to the implementation so I've used that for now.
2484 *) Ensure that deprecated functions do not get compiled when
2485 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2486 the self-tests were still using deprecated key-generation functions so
2487 these have been updated also.
2490 *) Reorganise PKCS#7 code to separate the digest location functionality
2491 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2492 New function PKCS7_set_digest() to set the digest type for PKCS#7
2493 digestedData type. Add additional code to correctly generate the
2494 digestedData type and add support for this type in PKCS7 initialization
2498 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2499 structure of type "other".
2502 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2503 sure the loop does correctly stop and breaking ("division by zero")
2504 modulus operations are not performed. The (pre-generated) prime
2505 table crypto/bn/bn_prime.h was already correct, but it could not be
2506 re-generated on some platforms because of the "division by zero"
2507 situation in the script.
2508 [Ralf S. Engelschall]
2510 *) Update support for ECC-based TLS ciphersuites according to
2511 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2512 SHA-1 now is only used for "small" curves (where the
2513 representation of a field element takes up to 24 bytes); for
2514 larger curves, the field element resulting from ECDH is directly
2515 used as premaster secret.
2516 [Douglas Stebila (Sun Microsystems Laboratories)]
2518 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2519 curve secp160r1 to the tests.
2520 [Douglas Stebila (Sun Microsystems Laboratories)]
2522 *) Add the possibility to load symbols globally with DSO.
2523 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2525 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2526 control of the error stack.
2529 *) Add support for STORE in ENGINE.
2532 *) Add the STORE type. The intention is to provide a common interface
2533 to certificate and key stores, be they simple file-based stores, or
2534 HSM-type store, or LDAP stores, or...
2535 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2538 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2539 pass a list of arguments to any function as well as provide a way
2540 for a function to pass data back to the caller.
2543 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2544 works like BUF_strdup() but can be used to duplicate a portion of
2545 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2549 *) Add the function sk_find_ex() which works like sk_find(), but will
2550 return an index to an element even if an exact match couldn't be
2551 found. The index is guaranteed to point at the element where the
2552 searched-for key would be inserted to preserve sorting order.
2555 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2556 takes an extra flags argument for optional functionality. Currently,
2557 the following flags are defined:
2559 OBJ_BSEARCH_VALUE_ON_NOMATCH
2560 This one gets OBJ_bsearch_ex() to return a pointer to the first
2561 element where the comparing function returns a negative or zero
2564 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2565 This one gets OBJ_bsearch_ex() to return a pointer to the first
2566 element where the comparing function returns zero. This is useful
2567 if there are more than one element where the comparing function
2571 *) Make it possible to create self-signed certificates with 'openssl ca'
2572 in such a way that the self-signed certificate becomes part of the
2573 CA database and uses the same mechanisms for serial number generation
2574 as all other certificate signing. The new flag '-selfsign' enables
2575 this functionality. Adapt CA.sh and CA.pl.in.
2578 *) Add functionality to check the public key of a certificate request
2579 against a given private. This is useful to check that a certificate
2580 request can be signed by that key (self-signing).
2583 *) Make it possible to have multiple active certificates with the same
2584 subject in the CA index file. This is done only if the keyword
2585 'unique_subject' is set to 'no' in the main CA section (default
2586 if 'CA_default') of the configuration file. The value is saved
2587 with the database itself in a separate index attribute file,
2588 named like the index file with '.attr' appended to the name.
2591 *) Generate muti valued AVAs using '+' notation in config files for
2595 *) Support for nameConstraints certificate extension.
2598 *) Support for policyConstraints certificate extension.
2601 *) Support for policyMappings certificate extension.
2604 *) Make sure the default DSA_METHOD implementation only uses its
2605 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2606 and change its own handlers to be NULL so as to remove unnecessary
2607 indirection. This lets alternative implementations fallback to the
2608 default implementation more easily.
2611 *) Support for directoryName in GeneralName related extensions
2615 *) Make it possible to link applications using Makefile.shared.
2616 Make that possible even when linking against static libraries!
2619 *) Support for single pass processing for S/MIME signing. This now
2620 means that S/MIME signing can be done from a pipe, in addition
2621 cleartext signing (multipart/signed type) is effectively streaming
2622 and the signed data does not need to be all held in memory.
2624 This is done with a new flag PKCS7_STREAM. When this flag is set
2625 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2626 is done after the data is output (and digests calculated) in
2627 SMIME_write_PKCS7().
2630 *) Add full support for -rpath/-R, both in shared libraries and
2631 applications, at least on the platforms where it's known how
2635 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2636 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2637 will now compute a table of multiples of the generator that
2638 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2639 faster (notably in the case of a single point multiplication,
2640 scalar * generator).
2641 [Nils Larsch, Bodo Moeller]
2643 *) IPv6 support for certificate extensions. The various extensions
2644 which use the IP:a.b.c.d can now take IPv6 addresses using the
2645 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2649 *) Added an ENGINE that implements RSA by performing private key
2650 exponentiations with the GMP library. The conversions to and from
2651 GMP's mpz_t format aren't optimised nor are any montgomery forms
2652 cached, and on x86 it appears OpenSSL's own performance has caught up.
2653 However there are likely to be other architectures where GMP could
2654 provide a boost. This ENGINE is not built in by default, but it can be
2655 specified at Configure time and should be accompanied by the necessary
2656 linker additions, eg;
2657 ./config -DOPENSSL_USE_GMP -lgmp
2660 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2661 testing availability of engines with "-t" - the old behaviour is
2662 produced by increasing the feature's verbosity with "-tt".
2665 *) ECDSA routines: under certain error conditions uninitialized BN objects
2666 could be freed. Solution: make sure initialization is performed early
2667 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2671 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2672 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2673 software implementations. For DSA and DH, parameter generation can
2674 also be overriden by providing the appropriate method callbacks.
2677 *) Change the "progress" mechanism used in key-generation and
2678 primality testing to functions that take a new BN_GENCB pointer in
2679 place of callback/argument pairs. The new API functions have "_ex"
2680 postfixes and the older functions are reimplemented as wrappers for
2681 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2682 declarations of the old functions to help (graceful) attempts to
2683 migrate to the new functions. Also, the new key-generation API
2684 functions operate on a caller-supplied key-structure and return
2685 success/failure rather than returning a key or NULL - this is to
2686 help make "keygen" another member function of RSA_METHOD etc.
2688 Example for using the new callback interface:
2690 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2694 BN_GENCB_set(&my_cb, my_callback, my_arg);
2696 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2697 /* For the meaning of a, b in calls to my_callback(), see the
2698 * documentation of the function that calls the callback.
2699 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2700 * my_callback should return 1 if it wants BN_is_prime_ex()
2701 * to continue, or 0 to stop.
2706 *) Change the ZLIB compression method to be stateful, and make it
2707 available to TLS with the number defined in
2708 draft-ietf-tls-compression-04.txt.
2711 *) Add the ASN.1 structures and functions for CertificatePair, which
2712 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2714 CertificatePair ::= SEQUENCE {
2715 forward [0] Certificate OPTIONAL,
2716 reverse [1] Certificate OPTIONAL,
2717 -- at least one of the pair shall be present -- }
2719 Also implement the PEM functions to read and write certificate
2720 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2722 This needed to be defined, mostly for the sake of the LDAP
2723 attribute crossCertificatePair, but may prove useful elsewhere as
2727 *) Make it possible to inhibit symlinking of shared libraries in
2728 Makefile.shared, for Cygwin's sake.
2731 *) Extend the BIGNUM API by creating a function
2732 void BN_set_negative(BIGNUM *a, int neg);
2733 and a macro that behave like
2734 int BN_is_negative(const BIGNUM *a);
2736 to avoid the need to access 'a->neg' directly in applications.
2739 *) Implement fast modular reduction for pseudo-Mersenne primes
2740 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2741 EC_GROUP_new_curve_GFp() will now automatically use this
2743 [Nils Larsch <nla@trustcenter.de>]
2745 *) Add new lock type (CRYPTO_LOCK_BN).
2748 *) Change the ENGINE framework to automatically load engines
2749 dynamically from specific directories unless they could be
2750 found to already be built in or loaded. Move all the
2751 current engines except for the cryptodev one to a new
2753 The engines in engines/ are built as shared libraries if
2754 the "shared" options was given to ./Configure or ./config.
2755 Otherwise, they are inserted in libcrypto.a.
2756 /usr/local/ssl/engines is the default directory for dynamic
2757 engines, but that can be overriden at configure time through
2758 the usual use of --prefix and/or --openssldir, and at run
2759 time with the environment variable OPENSSL_ENGINES.
2760 [Geoff Thorpe and Richard Levitte]
2762 *) Add Makefile.shared, a helper makefile to build shared
2763 libraries. Addapt Makefile.org.
2766 *) Add version info to Win32 DLLs.
2767 [Peter 'Luna' Runestig" <peter@runestig.com>]
2769 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2770 can be added using this API to created arbitrary PKCS#12
2771 files while avoiding the low level API.
2773 New options to PKCS12_create(), key or cert can be NULL and
2774 will then be omitted from the output file. The encryption
2775 algorithm NIDs can be set to -1 for no encryption, the mac
2776 iteration count can be set to 0 to omit the mac.
2778 Enhance pkcs12 utility by making the -nokeys and -nocerts
2779 options work when creating a PKCS#12 file. New option -nomac
2780 to omit the mac, NONE can be set for an encryption algorithm.
2781 New code is modified to use the enhanced PKCS12_create()
2782 instead of the low level API.
2785 *) Extend ASN1 encoder to support indefinite length constructed
2786 encoding. This can output sequences tags and octet strings in
2787 this form. Modify pk7_asn1.c to support indefinite length
2788 encoding. This is experimental and needs additional code to
2789 be useful, such as an ASN1 bio and some enhanced streaming
2792 Extend template encode functionality so that tagging is passed
2793 down to the template encoder.
2796 *) Let 'openssl req' fail if an argument to '-newkey' is not
2797 recognized instead of using RSA as a default.
2800 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2801 As these are not official, they are not included in "ALL";
2802 the "ECCdraft" ciphersuite group alias can be used to select them.
2803 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2805 *) Add ECDH engine support.
2806 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2808 *) Add ECDH in new directory crypto/ecdh/.
2809 [Douglas Stebila (Sun Microsystems Laboratories)]
2811 *) Let BN_rand_range() abort with an error after 100 iterations
2812 without success (which indicates a broken PRNG).
2815 *) Change BN_mod_sqrt() so that it verifies that the input value
2816 is really the square of the return value. (Previously,
2817 BN_mod_sqrt would show GIGO behaviour.)
2820 *) Add named elliptic curves over binary fields from X9.62, SECG,
2821 and WAP/WTLS; add OIDs that were still missing.
2823 [Sheueling Chang Shantz and Douglas Stebila
2824 (Sun Microsystems Laboratories)]
2826 *) Extend the EC library for elliptic curves over binary fields
2827 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2830 EC_GF2m_simple_method
2834 EC_GROUP_new_curve_GF2m
2835 EC_GROUP_set_curve_GF2m
2836 EC_GROUP_get_curve_GF2m
2837 EC_POINT_set_affine_coordinates_GF2m
2838 EC_POINT_get_affine_coordinates_GF2m
2839 EC_POINT_set_compressed_coordinates_GF2m
2841 Point compression for binary fields is disabled by default for
2842 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2845 As binary polynomials are represented as BIGNUMs, various members
2846 of the EC_GROUP and EC_POINT data structures can be shared
2847 between the implementations for prime fields and binary fields;
2848 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2849 are essentially identical to their ..._GFp counterparts.
2850 (For simplicity, the '..._GFp' prefix has been dropped from
2851 various internal method names.)
2853 An internal 'field_div' method (similar to 'field_mul' and
2854 'field_sqr') has been added; this is used only for binary fields.
2856 [Sheueling Chang Shantz and Douglas Stebila
2857 (Sun Microsystems Laboratories)]
2859 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2860 through methods ('mul', 'precompute_mult').
2862 The generic implementations (now internally called 'ec_wNAF_mul'
2863 and 'ec_wNAF_precomputed_mult') remain the default if these
2864 methods are undefined.
2866 [Sheueling Chang Shantz and Douglas Stebila
2867 (Sun Microsystems Laboratories)]
2869 *) New function EC_GROUP_get_degree, which is defined through
2870 EC_METHOD. For curves over prime fields, this returns the bit
2871 length of the modulus.
2873 [Sheueling Chang Shantz and Douglas Stebila
2874 (Sun Microsystems Laboratories)]
2876 *) New functions EC_GROUP_dup, EC_POINT_dup.
2877 (These simply call ..._new and ..._copy).
2879 [Sheueling Chang Shantz and Douglas Stebila
2880 (Sun Microsystems Laboratories)]
2882 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2883 Polynomials are represented as BIGNUMs (where the sign bit is not
2884 used) in the following functions [macros]:
2887 BN_GF2m_sub [= BN_GF2m_add]
2888 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2889 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2890 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2892 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2893 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2894 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2895 BN_GF2m_cmp [= BN_ucmp]
2897 (Note that only the 'mod' functions are actually for fields GF(2^m).
2898 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2900 For some functions, an the irreducible polynomial defining a
2901 field can be given as an 'unsigned int[]' with strictly
2902 decreasing elements giving the indices of those bits that are set;
2903 i.e., p[] represents the polynomial
2904 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2906 p[0] > p[1] > ... > p[k] = 0.
2907 This applies to the following functions:
2912 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2913 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2915 BN_GF2m_mod_sqrt_arr
2916 BN_GF2m_mod_solve_quad_arr
2920 Conversion can be performed by the following functions:
2925 bntest.c has additional tests for binary polynomial arithmetic.
2927 Two implementations for BN_GF2m_mod_div() are available.
2928 The default algorithm simply uses BN_GF2m_mod_inv() and
2929 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2930 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2931 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2933 [Sheueling Chang Shantz and Douglas Stebila
2934 (Sun Microsystems Laboratories)]
2936 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2937 functionality is disabled at compile-time.
2938 [Douglas Stebila <douglas.stebila@sun.com>]
2940 *) Change default behaviour of 'openssl asn1parse' so that more
2941 information is visible when viewing, e.g., a certificate:
2943 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2944 mode the content of non-printable OCTET STRINGs is output in a
2945 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2946 avoid the appearance of a printable string.
2947 [Nils Larsch <nla@trustcenter.de>]
2949 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2951 EC_GROUP_set_asn1_flag()
2952 EC_GROUP_get_asn1_flag()
2953 EC_GROUP_set_point_conversion_form()
2954 EC_GROUP_get_point_conversion_form()
2955 These control ASN1 encoding details:
2956 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2957 has been set to OPENSSL_EC_NAMED_CURVE.
2958 - Points are encoded in uncompressed form by default; options for
2959 asn1_for are as for point2oct, namely
2960 POINT_CONVERSION_COMPRESSED
2961 POINT_CONVERSION_UNCOMPRESSED
2962 POINT_CONVERSION_HYBRID
2964 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2967 EC_GROUP_get0_seed()
2968 EC_GROUP_get_seed_len()
2969 This is used only for ASN1 purposes (so far).
2970 [Nils Larsch <nla@trustcenter.de>]
2972 *) Add 'field_type' member to EC_METHOD, which holds the NID
2973 of the appropriate field type OID. The new function
2974 EC_METHOD_get_field_type() returns this value.
2975 [Nils Larsch <nla@trustcenter.de>]
2980 EC_POINT_point2hex()
2981 EC_POINT_hex2point()
2982 providing useful interfaces to EC_POINT_point2oct() and
2983 EC_POINT_oct2point().
2984 [Nils Larsch <nla@trustcenter.de>]
2986 *) Change internals of the EC library so that the functions
2987 EC_GROUP_set_generator()
2988 EC_GROUP_get_generator()
2989 EC_GROUP_get_order()
2990 EC_GROUP_get_cofactor()
2991 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2992 to methods, which would lead to unnecessary code duplication when
2993 adding different types of curves.
2994 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2996 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2997 arithmetic, and such that modified wNAFs are generated
2998 (which avoid length expansion in many cases).
3001 *) Add a function EC_GROUP_check_discriminant() (defined via
3002 EC_METHOD) that verifies that the curve discriminant is non-zero.
3004 Add a function EC_GROUP_check() that makes some sanity tests
3005 on a EC_GROUP, its generator and order. This includes
3006 EC_GROUP_check_discriminant().
3007 [Nils Larsch <nla@trustcenter.de>]
3009 *) Add ECDSA in new directory crypto/ecdsa/.
3011 Add applications 'openssl ecparam' and 'openssl ecdsa'
3012 (these are based on 'openssl dsaparam' and 'openssl dsa').
3014 ECDSA support is also included in various other files across the
3015 library. Most notably,
3016 - 'openssl req' now has a '-newkey ecdsa:file' option;
3017 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3018 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3019 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3020 them suitable for ECDSA where domain parameters must be
3021 extracted before the specific public key;
3022 - ECDSA engine support has been added.
3023 [Nils Larsch <nla@trustcenter.de>]
3025 *) Include some named elliptic curves, and add OIDs from X9.62,
3026 SECG, and WAP/WTLS. Each curve can be obtained from the new
3028 EC_GROUP_new_by_curve_name(),
3029 and the list of available named curves can be obtained with
3030 EC_get_builtin_curves().
3031 Also add a 'curve_name' member to EC_GROUP objects, which can be
3033 EC_GROUP_set_curve_name()
3034 EC_GROUP_get_curve_name()
3035 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3037 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3038 was actually never needed) and in BN_mul(). The removal in BN_mul()
3039 required a small change in bn_mul_part_recursive() and the addition
3040 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3041 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3042 bn_sub_words() and bn_add_words() except they take arrays with
3046 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3048 *) Cleanse PEM buffers before freeing them since they may contain
3050 [Benjamin Bennett <ben@psc.edu>]
3052 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3053 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3054 authentication-only ciphersuites.
3057 *) Since AES128 and AES256 share a single mask bit in the logic of
3058 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3059 kludge to work properly if AES128 is available and AES256 isn't.
3062 *) Expand security boundary to match 1.1.1 module.
3065 *) Remove redundant features: hash file source, editing of test vectors
3066 modify fipsld to use external fips_premain.c signature.
3069 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3070 run algorithm test programs.
3073 *) Make algorithm test programs more tolerant of whitespace.
3076 *) Have SSL/TLS server implementation tolerate "mismatched" record
3077 protocol version while receiving ClientHello even if the
3078 ClientHello is fragmented. (The server can't insist on the
3079 particular protocol version it has chosen before the ServerHello
3080 message has informed the client about his choice.)
3083 *) Load error codes if they are not already present instead of using a
3084 static variable. This allows them to be cleanly unloaded and reloaded.
3087 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3089 *) Introduce limits to prevent malicious keys being able to
3090 cause a denial of service. (CVE-2006-2940)
3091 [Steve Henson, Bodo Moeller]
3093 *) Fix ASN.1 parsing of certain invalid structures that can result
3094 in a denial of service. (CVE-2006-2937) [Steve Henson]
3096 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3097 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3099 *) Fix SSL client code which could crash if connecting to a
3100 malicious SSLv2 server. (CVE-2006-4343)
3101 [Tavis Ormandy and Will Drewry, Google Security Team]
3103 *) Change ciphersuite string processing so that an explicit
3104 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3105 will no longer include "AES128-SHA"), and any other similar
3106 ciphersuite (same bitmap) from *other* protocol versions (so that
3107 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3108 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3109 changes from 0.9.8b and 0.9.8d.
3112 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3114 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3115 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3117 *) Change the Unix randomness entropy gathering to use poll() when
3118 possible instead of select(), since the latter has some
3119 undesirable limitations.
3120 [Darryl Miles via Richard Levitte and Bodo Moeller]
3122 *) Disable rogue ciphersuites:
3124 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3125 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3126 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3128 The latter two were purportedly from
3129 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3132 Also deactive the remaining ciphersuites from
3133 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3134 unofficial, and the ID has long expired.
3137 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3138 dual-core machines) and other potential thread-safety issues.
3141 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3143 *) Adapt fipsld and the build system to link against the validated FIPS
3144 module in FIPS mode.
3147 *) Fixes for VC++ 2005 build under Windows.
3150 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3151 from a Windows bash shell such as MSYS. It is autodetected from the
3152 "config" script when run from a VC++ environment. Modify standard VC++
3153 build to use fipscanister.o from the GNU make build.
3156 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3158 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3159 The value now differs depending on if you build for FIPS or not.
3160 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3161 safely run with a non-FIPSed libcrypto, as it may crash because of
3162 the difference induced by this change.
3165 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3167 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3168 (part of SSL_OP_ALL). This option used to disable the
3169 countermeasure against man-in-the-middle protocol-version
3170 rollback in the SSL 2.0 server implementation, which is a bad
3171 idea. (CVE-2005-2969)
3173 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3174 for Information Security, National Institute of Advanced Industrial
3175 Science and Technology [AIST], Japan)]
3177 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3178 mainly for FIPS compliance and not fully integrated at this stage.
3181 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3182 the exponentiation using a fixed-length exponent. (Otherwise,
3183 the information leaked through timing could expose the secret key
3184 after many signatures; cf. Bleichenbacher's attack on DSA with
3188 *) Make a new fixed-window mod_exp implementation the default for
3189 RSA, DSA, and DH private-key operations so that the sequence of
3190 squares and multiplies and the memory access pattern are
3191 independent of the particular secret key. This will mitigate
3192 cache-timing and potential related attacks.
3194 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3195 and this is automatically used by BN_mod_exp_mont() if the new flag
3196 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3197 will use this BN flag for private exponents unless the flag
3198 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3199 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3201 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3203 *) Change the client implementation for SSLv23_method() and
3204 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3205 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3206 (Previously, the SSL 2.0 backwards compatible Client Hello
3207 message format would be used even with SSL_OP_NO_SSLv2.)
3210 *) Add support for smime-type MIME parameter in S/MIME messages which some
3214 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3215 a threadsafe manner. Modify rsa code to use new function and add calls
3216 to dsa and dh code (which had race conditions before).
3219 *) Include the fixed error library code in the C error file definitions
3220 instead of fixing them up at runtime. This keeps the error code
3221 structures constant.
3224 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3226 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3229 *) Fixes for newer kerberos headers. NB: the casts are needed because
3230 the 'length' field is signed on one version and unsigned on another
3231 with no (?) obvious way to tell the difference, without these VC++
3232 complains. Also the "definition" of FAR (blank) is no longer included
3233 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3234 some needed definitions.
3237 *) Undo Cygwin change.
3240 *) Added support for proxy certificates according to RFC 3820.
3241 Because they may be a security thread to unaware applications,
3242 they must be explicitely allowed in run-time. See
3243 docs/HOWTO/proxy_certificates.txt for further information.
3246 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3248 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3249 server and client random values. Previously
3250 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3251 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3253 This change has negligible security impact because:
3255 1. Server and client random values still have 24 bytes of pseudo random
3258 2. Server and client random values are sent in the clear in the initial
3261 3. The master secret is derived using the premaster secret (48 bytes in
3262 size for static RSA ciphersuites) as well as client server and random
3265 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3268 [Stephen Henson, reported by UK NISCC]
3270 *) Use Windows randomness collection on Cygwin.
3273 *) Fix hang in EGD/PRNGD query when communication socket is closed
3274 prematurely by EGD/PRNGD.
3275 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3277 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3280 *) Back-port of selected performance improvements from development
3281 branch, as well as improved support for PowerPC platforms.
3284 *) Add lots of checks for memory allocation failure, error codes to indicate
3285 failure and freeing up memory if a failure occurs.
3286 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3288 *) Add new -passin argument to dgst.
3291 *) Perform some character comparisons of different types in X509_NAME_cmp:
3292 this is needed for some certificates that reencode DNs into UTF8Strings
3293 (in violation of RFC3280) and can't or wont issue name rollover
3297 *) Make an explicit check during certificate validation to see that
3298 the CA setting in each certificate on the chain is correct. As a
3299 side effect always do the following basic checks on extensions,
3300 not just when there's an associated purpose to the check:
3302 - if there is an unhandled critical extension (unless the user
3303 has chosen to ignore this fault)
3304 - if the path length has been exceeded (if one is set at all)
3305 - that certain extensions fit the associated purpose (if one has
3309 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3311 *) Avoid a race condition when CRLs are checked in a multi threaded
3312 environment. This would happen due to the reordering of the revoked
3313 entries during signature checking and serial number lookup. Now the
3314 encoding is cached and the serial number sort performed under a lock.
3315 Add new STACK function sk_is_sorted().
3318 *) Add Delta CRL to the extension code.
3321 *) Various fixes to s3_pkt.c so alerts are sent properly.
3322 [David Holmes <d.holmes@f5.com>]
3324 *) Reduce the chances of duplicate issuer name and serial numbers (in
3325 violation of RFC3280) using the OpenSSL certificate creation utilities.
3326 This is done by creating a random 64 bit value for the initial serial
3327 number when a serial number file is created or when a self signed
3328 certificate is created using 'openssl req -x509'. The initial serial
3329 number file is created using 'openssl x509 -next_serial' in CA.pl
3330 rather than being initialized to 1.
3333 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3335 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3336 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3337 [Joe Orton, Steve Henson]
3339 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3341 [Joe Orton, Steve Henson]
3343 *) Make it possible to have multiple active certificates with the same
3344 subject in the CA index file. This is done only if the keyword
3345 'unique_subject' is set to 'no' in the main CA section (default
3346 if 'CA_default') of the configuration file. The value is saved
3347 with the database itself in a separate index attribute file,
3348 named like the index file with '.attr' appended to the name.
3351 *) X509 verify fixes. Disable broken certificate workarounds when
3352 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3353 keyUsage extension present. Don't accept CRLs with unhandled critical
3354 extensions: since verify currently doesn't process CRL extensions this
3355 rejects a CRL with *any* critical extensions. Add new verify error codes
3359 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3360 A clarification of RFC2560 will require the use of OCTET STRINGs and
3361 some implementations cannot handle the current raw format. Since OpenSSL
3362 copies and compares OCSP nonces as opaque blobs without any attempt at
3363 parsing them this should not create any compatibility issues.
3366 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3367 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3368 this HMAC (and other) operations are several times slower than OpenSSL
3372 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3373 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3375 *) Use the correct content when signing type "other".
3378 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3380 *) Fix various bugs revealed by running the NISCC test suite:
3382 Stop out of bounds reads in the ASN1 code when presented with
3383 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3385 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3387 If verify callback ignores invalid public key errors don't try to check
3388 certificate signature with the NULL public key.
3392 *) New -ignore_err option in ocsp application to stop the server
3393 exiting on the first error in a request.
3396 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3397 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3401 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3402 extra data after the compression methods not only for TLS 1.0
3403 but also for SSL 3.0 (as required by the specification).
3404 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3406 *) Change X509_certificate_type() to mark the key as exported/exportable
3407 when it's 512 *bits* long, not 512 bytes.
3410 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3411 blocks during encryption.
3414 *) Various fixes to base64 BIO and non blocking I/O. On write
3415 flushes were not handled properly if the BIO retried. On read
3416 data was not being buffered properly and had various logic bugs.
3417 This also affects blocking I/O when the data being decoded is a
3421 *) Various S/MIME bugfixes and compatibility changes:
3422 output correct application/pkcs7 MIME type if
3423 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3424 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3425 of files as .eml work). Correctly handle very long lines in MIME
3429 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3431 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3432 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3433 a protocol version number mismatch like a decryption error
3434 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3437 *) Turn on RSA blinding by default in the default implementation
3438 to avoid a timing attack. Applications that don't want it can call
3439 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3440 They would be ill-advised to do so in most cases.
3441 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3443 *) Change RSA blinding code so that it works when the PRNG is not
3444 seeded (in this case, the secret RSA exponent is abused as
3445 an unpredictable seed -- if it is not unpredictable, there
3446 is no point in blinding anyway). Make RSA blinding thread-safe
3447 by remembering the creator's thread ID in rsa->blinding and
3448 having all other threads use local one-time blinding factors
3449 (this requires more computation than sharing rsa->blinding, but
3450 avoids excessive locking; and if an RSA object is not shared
3451 between threads, blinding will still be very fast).
3454 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3455 ENGINE as defaults for all supported algorithms irrespective of
3456 the 'flags' parameter. 'flags' is now honoured, so applications
3457 should make sure they are passing it correctly.
3460 *) Target "mingw" now allows native Windows code to be generated in
3461 the Cygwin environment as well as with the MinGW compiler.
3464 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3466 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3467 via timing by performing a MAC computation even if incorrrect
3468 block cipher padding has been found. This is a countermeasure
3469 against active attacks where the attacker has to distinguish
3470 between bad padding and a MAC verification error. (CVE-2003-0078)
3472 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3473 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3474 Martin Vuagnoux (EPFL, Ilion)]
3476 *) Make the no-err option work as intended. The intention with no-err
3477 is not to have the whole error stack handling routines removed from
3478 libcrypto, it's only intended to remove all the function name and
3479 reason texts, thereby removing some of the footprint that may not
3480 be interesting if those errors aren't displayed anyway.
3482 NOTE: it's still possible for any application or module to have it's
3483 own set of error texts inserted. The routines are there, just not
3484 used by default when no-err is given.
3487 *) Add support for FreeBSD on IA64.
3488 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3490 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3491 Kerberos function mit_des_cbc_cksum(). Before this change,
3492 the value returned by DES_cbc_cksum() was like the one from
3493 mit_des_cbc_cksum(), except the bytes were swapped.
3494 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3496 *) Allow an application to disable the automatic SSL chain building.
3497 Before this a rather primitive chain build was always performed in
3498 ssl3_output_cert_chain(): an application had no way to send the
3499 correct chain if the automatic operation produced an incorrect result.
3501 Now the chain builder is disabled if either:
3503 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3505 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3507 The reasoning behind this is that an application would not want the
3508 auto chain building to take place if extra chain certificates are
3509 present and it might also want a means of sending no additional
3510 certificates (for example the chain has two certificates and the
3514 *) Add the possibility to build without the ENGINE framework.
3515 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3517 *) Under Win32 gmtime() can return NULL: check return value in
3518 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3521 *) DSA routines: under certain error conditions uninitialized BN objects
3522 could be freed. Solution: make sure initialization is performed early
3523 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3524 Nils Larsch <nla@trustcenter.de> via PR#459)
3527 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3528 checked on reconnect on the client side, therefore session resumption
3529 could still fail with a "ssl session id is different" error. This
3530 behaviour is masked when SSL_OP_ALL is used due to
3531 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3532 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3533 followup to PR #377.
3536 *) IA-32 assembler support enhancements: unified ELF targets, support
3537 for SCO/Caldera platforms, fix for Cygwin shared build.
3540 *) Add support for FreeBSD on sparc64. As a consequence, support for
3541 FreeBSD on non-x86 processors is separate from x86 processors on
3542 the config script, much like the NetBSD support.
3543 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3545 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3547 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3550 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3551 code (06) was taken as the first octet of the session ID and the last
3552 octet was ignored consequently. As a result SSLv2 client side session
3553 caching could not have worked due to the session ID mismatch between
3555 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3559 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3560 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3564 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3565 seems that in spite of existing for more than a year, many application
3566 author have done nothing to provide the necessary callbacks, which
3567 means that this particular engine will not work properly anywhere.
3568 This is a very unfortunate situation which forces us, in the name
3569 of usability, to give the hw_ncipher.c a static lock, which is part
3571 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3572 appear in 0.9.8 or later. We EXPECT application authors to have
3573 dealt properly with this when 0.9.8 is released (unless we actually
3574 make such changes in the libcrypto locking code that changes will
3575 have to be made anyway).
3578 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3579 octets have been read, EOF or an error occurs. Without this change
3580 some truncated ASN1 structures will not produce an error.
3583 *) Disable Heimdal support, since it hasn't been fully implemented.
3584 Still give the possibility to force the use of Heimdal, but with
3585 warnings and a request that patches get sent to openssl-dev.
3588 *) Add the VC-CE target, introduce the WINCE sysname, and add
3589 INSTALL.WCE and appropriate conditionals to make it build.
3590 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3592 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3593 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3594 edit numbers of the version.
3595 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3597 *) Introduce safe string copy and catenation functions
3598 (BUF_strlcpy() and BUF_strlcat()).
3599 [Ben Laurie (CHATS) and Richard Levitte]
3601 *) Avoid using fixed-size buffers for one-line DNs.
3602 [Ben Laurie (CHATS)]
3604 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3605 resizing buffers containing secrets, and use where appropriate.
3606 [Ben Laurie (CHATS)]
3608 *) Avoid using fixed size buffers for configuration file location.
3609 [Ben Laurie (CHATS)]
3611 *) Avoid filename truncation for various CA files.
3612 [Ben Laurie (CHATS)]
3614 *) Use sizeof in preference to magic numbers.
3615 [Ben Laurie (CHATS)]
3617 *) Avoid filename truncation in cert requests.
3618 [Ben Laurie (CHATS)]
3620 *) Add assertions to check for (supposedly impossible) buffer
3622 [Ben Laurie (CHATS)]
3624 *) Don't cache truncated DNS entries in the local cache (this could
3625 potentially lead to a spoofing attack).
3626 [Ben Laurie (CHATS)]
3628 *) Fix various buffers to be large enough for hex/decimal
3629 representations in a platform independent manner.
3630 [Ben Laurie (CHATS)]
3632 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3633 resizing buffers containing secrets, and use where appropriate.
3634 [Ben Laurie (CHATS)]
3636 *) Add BIO_indent() to avoid much slightly worrying code to do
3638 [Ben Laurie (CHATS)]
3640 *) Convert sprintf()/BIO_puts() to BIO_printf().
3641 [Ben Laurie (CHATS)]
3643 *) buffer_gets() could terminate with the buffer only half
3645 [Ben Laurie (CHATS)]
3647 *) Add assertions to prevent user-supplied crypto functions from
3648 overflowing internal buffers by having large block sizes, etc.
3649 [Ben Laurie (CHATS)]
3651 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3653 [Ben Laurie (CHATS)]
3655 *) Eliminate unused copy of key in RC4.
3656 [Ben Laurie (CHATS)]
3658 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3659 [Ben Laurie (CHATS)]
3661 *) Fix off-by-one error in EGD path.
3662 [Ben Laurie (CHATS)]
3664 *) If RANDFILE path is too long, ignore instead of truncating.
3665 [Ben Laurie (CHATS)]
3667 *) Eliminate unused and incorrectly sized X.509 structure
3669 [Ben Laurie (CHATS)]
3671 *) Eliminate unused and dangerous function knumber().
3672 [Ben Laurie (CHATS)]
3674 *) Eliminate unused and dangerous structure, KSSL_ERR.
3675 [Ben Laurie (CHATS)]
3677 *) Protect against overlong session ID context length in an encoded
3678 session object. Since these are local, this does not appear to be
3680 [Ben Laurie (CHATS)]
3682 *) Change from security patch (see 0.9.6e below) that did not affect
3683 the 0.9.6 release series:
3685 Remote buffer overflow in SSL3 protocol - an attacker could
3686 supply an oversized master key in Kerberos-enabled versions.
3688 [Ben Laurie (CHATS)]
3690 *) Change the SSL kerb5 codes to match RFC 2712.
3693 *) Make -nameopt work fully for req and add -reqopt switch.
3694 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3696 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3697 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3699 *) Make sure tests can be performed even if the corresponding algorithms
3700 have been removed entirely. This was also the last step to make
3701 OpenSSL compilable with DJGPP under all reasonable conditions.
3702 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3704 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3705 to allow version independent disabling of normally unselected ciphers,
3706 which may be activated as a side-effect of selecting a single cipher.
3708 (E.g., cipher list string "RSA" enables ciphersuites that are left
3709 out of "ALL" because they do not provide symmetric encryption.
3710 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3711 [Lutz Jaenicke, Bodo Moeller]
3713 *) Add appropriate support for separate platform-dependent build
3714 directories. The recommended way to make a platform-dependent
3715 build directory is the following (tested on Linux), maybe with
3718 # Place yourself outside of the OpenSSL source tree. In
3719 # this example, the environment variable OPENSSL_SOURCE
3720 # is assumed to contain the absolute OpenSSL source directory.
3721 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3722 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3723 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3724 mkdir -p `dirname $F`
3725 ln -s $OPENSSL_SOURCE/$F $F
3728 To be absolutely sure not to disturb the source tree, a "make clean"
3729 is a good thing. If it isn't successfull, don't worry about it,
3730 it probably means the source directory is very clean.
3733 *) Make sure any ENGINE control commands make local copies of string
3734 pointers passed to them whenever necessary. Otherwise it is possible
3735 the caller may have overwritten (or deallocated) the original string
3736 data when a later ENGINE operation tries to use the stored values.
3737 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3739 *) Improve diagnostics in file reading and command-line digests.
3740 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3742 *) Add AES modes CFB and OFB to the object database. Correct an
3743 error in AES-CFB decryption.
3746 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3747 allows existing EVP_CIPHER_CTX structures to be reused after
3748 calling EVP_*Final(). This behaviour is used by encryption
3749 BIOs and some applications. This has the side effect that
3750 applications must explicitly clean up cipher contexts with
3751 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3754 *) Check the values of dna and dnb in bn_mul_recursive before calling
3755 bn_mul_comba (a non zero value means the a or b arrays do not contain
3756 n2 elements) and fallback to bn_mul_normal if either is not zero.
3759 *) Fix escaping of non-ASCII characters when using the -subj option
3760 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3763 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3764 form for "surname", serialNumber has no short form.
3765 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3766 therefore remove "mail" short name for "internet 7".
3767 The OID for unique identifiers in X509 certificates is
3768 x500UniqueIdentifier, not uniqueIdentifier.
3769 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3772 *) Add an "init" command to the ENGINE config module and auto initialize
3773 ENGINEs. Without any "init" command the ENGINE will be initialized
3774 after all ctrl commands have been executed on it. If init=1 the
3775 ENGINE is initailized at that point (ctrls before that point are run
3776 on the uninitialized ENGINE and after on the initialized one). If
3777 init=0 then the ENGINE will not be iniatialized at all.
3780 *) Fix the 'app_verify_callback' interface so that the user-defined
3781 argument is actually passed to the callback: In the
3782 SSL_CTX_set_cert_verify_callback() prototype, the callback
3783 declaration has been changed from
3786 int (*cb)(X509_STORE_CTX *,void *);
3787 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3788 i=s->ctx->app_verify_callback(&ctx)
3789 has been changed into
3790 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3792 To update applications using SSL_CTX_set_cert_verify_callback(),
3793 a dummy argument can be added to their callback functions.
3794 [D. K. Smetters <smetters@parc.xerox.com>]
3796 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3797 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3799 *) Add and OPENSSL_LOAD_CONF define which will cause
3800 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3801 This allows older applications to transparently support certain
3802 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3803 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3804 load the config file and OPENSSL_add_all_algorithms_conf() which will
3805 always load it have also been added.
3808 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3809 Adjust NIDs and EVP layer.
3810 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3812 *) Config modules support in openssl utility.
3814 Most commands now load modules from the config file,
3815 though in a few (such as version) this isn't done
3816 because it couldn't be used for anything.
3818 In the case of ca and req the config file used is
3819 the same as the utility itself: that is the -config
3820 command line option can be used to specify an
3824 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3825 use "openssl_conf" if filename is NULL use default openssl config file.
3828 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3829 config section name. Add a new flag to tolerate a missing config file
3830 and move code to CONF_modules_load_file().
3833 *) Support for crypto accelerator cards from Accelerated Encryption
3834 Processing, www.aep.ie. (Use engine 'aep')
3835 The support was copied from 0.9.6c [engine] and adapted/corrected
3836 to work with the new engine framework.
3837 [AEP Inc. and Richard Levitte]
3839 *) Support for SureWare crypto accelerator cards from Baltimore
3840 Technologies. (Use engine 'sureware')
3841 The support was copied from 0.9.6c [engine] and adapted
3842 to work with the new engine framework.
3845 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3846 make the newer ENGINE framework commands for the CHIL engine work.
3847 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3849 *) Make it possible to produce shared libraries on ReliantUNIX.
3850 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3852 *) Add the configuration target debug-linux-ppro.
3853 Make 'openssl rsa' use the general key loading routines
3854 implemented in apps.c, and make those routines able to
3855 handle the key format FORMAT_NETSCAPE and the variant
3857 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3859 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3860 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3862 *) Add -keyform to rsautl, and document -engine.
3863 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3865 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3866 BIO_R_NO_SUCH_FILE error code rather than the generic
3867 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3870 *) Add new functions
3872 ERR_peek_last_error_line
3873 ERR_peek_last_error_line_data.
3874 These are similar to
3877 ERR_peek_error_line_data,
3878 but report on the latest error recorded rather than the first one
3879 still in the error queue.
3880 [Ben Laurie, Bodo Moeller]
3882 *) default_algorithms option in ENGINE config module. This allows things
3884 default_algorithms = ALL
3885 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3888 *) Prelminary ENGINE config module.
3891 *) New experimental application configuration code.
3894 *) Change the AES code to follow the same name structure as all other
3895 symmetric ciphers, and behave the same way. Move everything to
3896 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3897 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3899 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3900 [Ben Laurie and Theo de Raadt]
3902 *) Add option to output public keys in req command.
3903 [Massimiliano Pala madwolf@openca.org]
3905 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3906 (up to about 10% better than before for P-192 and P-224).
3909 *) New functions/macros
3911 SSL_CTX_set_msg_callback(ctx, cb)
3912 SSL_CTX_set_msg_callback_arg(ctx, arg)
3913 SSL_set_msg_callback(ssl, cb)
3914 SSL_set_msg_callback_arg(ssl, arg)
3916 to request calling a callback function
3918 void cb(int write_p, int version, int content_type,
3919 const void *buf, size_t len, SSL *ssl, void *arg)
3921 whenever a protocol message has been completely received
3922 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3923 protocol version according to which the SSL library interprets
3924 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3925 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3926 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3927 specification (change_cipher_spec(20), alert(21), handshake(22)).
3928 'buf' and 'len' point to the actual message, 'ssl' to the
3929 SSL object, and 'arg' is the application-defined value set by
3930 SSL[_CTX]_set_msg_callback_arg().
3932 'openssl s_client' and 'openssl s_server' have new '-msg' options
3933 to enable a callback that displays all protocol messages.
3936 *) Change the shared library support so shared libraries are built as
3937 soon as the corresponding static library is finished, and thereby get
3938 openssl and the test programs linked against the shared library.
3939 This still only happens when the keyword "shard" has been given to
3940 the configuration scripts.
3942 NOTE: shared library support is still an experimental thing, and
3943 backward binary compatibility is still not guaranteed.
3944 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3946 *) Add support for Subject Information Access extension.
3947 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3949 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3950 additional bytes when new memory had to be allocated, not just
3951 when reusing an existing buffer.
3954 *) New command line and configuration option 'utf8' for the req command.
3955 This allows field values to be specified as UTF8 strings.
3958 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3959 runs for the former and machine-readable output for the latter.
3962 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3963 of the e-mail address in the DN (i.e., it will go into a certificate
3964 extension only). The new configuration file option 'email_in_dn = no'
3965 has the same effect.
3966 [Massimiliano Pala madwolf@openca.org]
3968 *) Change all functions with names starting with des_ to be starting
3969 with DES_ instead. Add wrappers that are compatible with libdes,
3970 but are named _ossl_old_des_*. Finally, add macros that map the
3971 des_* symbols to the corresponding _ossl_old_des_* if libdes
3972 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3973 desired, the des_* symbols will be mapped to DES_*, with one
3976 Since we provide two compatibility mappings, the user needs to
3977 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3978 compatibility is desired. The default (i.e., when that macro
3979 isn't defined) is OpenSSL 0.9.6c compatibility.
3981 There are also macros that enable and disable the support of old
3982 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3983 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3984 are defined, the default will apply: to support the old des routines.
3986 In either case, one must include openssl/des.h to get the correct
3987 definitions. Do not try to just include openssl/des_old.h, that
3990 NOTE: This is a major break of an old API into a new one. Software
3991 authors are encouraged to switch to the DES_ style functions. Some
3992 time in the future, des_old.h and the libdes compatibility functions
3993 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3994 default), and then completely removed.
3997 *) Test for certificates which contain unsupported critical extensions.
3998 If such a certificate is found during a verify operation it is
3999 rejected by default: this behaviour can be overridden by either
4000 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4001 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4002 X509_supported_extension() has also been added which returns 1 if a
4003 particular extension is supported.
4006 *) Modify the behaviour of EVP cipher functions in similar way to digests
4007 to retain compatibility with existing code.
4010 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4011 compatibility with existing code. In particular the 'ctx' parameter does
4012 not have to be to be initialized before the call to EVP_DigestInit() and
4013 it is tidied up after a call to EVP_DigestFinal(). New function
4014 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4015 EVP_MD_CTX_copy() changed to not require the destination to be
4016 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4017 requires the destination to be valid.
4019 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4020 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4023 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4024 so that complete 'Handshake' protocol structures are kept in memory
4025 instead of overwriting 'msg_type' and 'length' with 'body' data.
4028 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4029 [Massimo Santin via Richard Levitte]
4031 *) Major restructuring to the underlying ENGINE code. This includes
4032 reduction of linker bloat, separation of pure "ENGINE" manipulation
4033 (initialisation, etc) from functionality dealing with implementations
4034 of specific crypto iterfaces. This change also introduces integrated
4035 support for symmetric ciphers and digest implementations - so ENGINEs
4036 can now accelerate these by providing EVP_CIPHER and EVP_MD
4037 implementations of their own. This is detailed in crypto/engine/README
4038 as it couldn't be adequately described here. However, there are a few
4039 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4040 were changed in the original introduction of ENGINE code have now
4041 reverted back - the hooking from this code to ENGINE is now a good
4042 deal more passive and at run-time, operations deal directly with
4043 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4044 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4045 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4046 they were not being used by the framework as there is no concept of a
4047 BIGNUM_METHOD and they could not be generalised to the new
4048 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4049 ENGINE_cpy() has been removed as it cannot be consistently defined in
4053 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4056 *) Change mkdef.pl to sort symbols that get the same entry number,
4057 and make sure the automatically generated functions ERR_load_*
4058 become part of libeay.num as well.
4061 *) New function SSL_renegotiate_pending(). This returns true once
4062 renegotiation has been requested (either SSL_renegotiate() call
4063 or HelloRequest/ClientHello receveived from the peer) and becomes
4064 false once a handshake has been completed.
4065 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4066 sends a HelloRequest, but does not ensure that a handshake takes
4067 place. SSL_renegotiate_pending() is useful for checking if the
4068 client has followed the request.)
4071 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4072 By default, clients may request session resumption even during
4073 renegotiation (if session ID contexts permit); with this option,
4074 session resumption is possible only in the first handshake.
4076 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4077 more bits available for options that should not be part of
4078 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4081 *) Add some demos for certificate and certificate request creation.
4084 *) Make maximum certificate chain size accepted from the peer application
4085 settable (SSL*_get/set_max_cert_list()), as proposed by
4086 "Douglas E. Engert" <deengert@anl.gov>.
4089 *) Add support for shared libraries for Unixware-7
4090 (Boyd Lynn Gerber <gerberb@zenez.com>).
4093 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4094 be done prior to destruction. Use this to unload error strings from
4095 ENGINEs that load their own error strings. NB: This adds two new API
4096 functions to "get" and "set" this destroy handler in an ENGINE.
4099 *) Alter all existing ENGINE implementations (except "openssl" and
4100 "openbsd") to dynamically instantiate their own error strings. This
4101 makes them more flexible to be built both as statically-linked ENGINEs
4102 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4103 Also, add stub code to each that makes building them as self-contained
4104 shared-libraries easier (see README.ENGINE).
4107 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4108 implementations into applications that are completely implemented in
4109 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4110 commands that can be used to configure what shared-library to load and
4111 to control aspects of the way it is handled. Also, made an update to
4112 the README.ENGINE file that brings its information up-to-date and
4113 provides some information and instructions on the "dynamic" ENGINE
4114 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4117 *) Make it possible to unload ranges of ERR strings with a new
4118 "ERR_unload_strings" function.
4121 *) Add a copy() function to EVP_MD.
4124 *) Make EVP_MD routines take a context pointer instead of just the
4125 md_data void pointer.
4128 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
4129 that the digest can only process a single chunk of data
4130 (typically because it is provided by a piece of
4131 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
4132 is only going to provide a single chunk of data, and hence the
4133 framework needn't accumulate the data for oneshot drivers.
4136 *) As with "ERR", make it possible to replace the underlying "ex_data"
4137 functions. This change also alters the storage and management of global
4138 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
4139 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
4140 index counters. The API functions that use this state have been changed
4141 to take a "class_index" rather than pointers to the class's local STACK
4142 and counter, and there is now an API function to dynamically create new
4143 classes. This centralisation allows us to (a) plug a lot of the
4144 thread-safety problems that existed, and (b) makes it possible to clean
4145 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
4146 such data would previously have always leaked in application code and
4147 workarounds were in place to make the memory debugging turn a blind eye
4148 to it. Application code that doesn't use this new function will still
4149 leak as before, but their memory debugging output will announce it now
4150 rather than letting it slide.
4152 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
4153 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
4154 has a return value to indicate success or failure.
4157 *) Make it possible to replace the underlying "ERR" functions such that the
4158 global state (2 LHASH tables and 2 locks) is only used by the "default"
4159 implementation. This change also adds two functions to "get" and "set"
4160 the implementation prior to it being automatically set the first time
4161 any other ERR function takes place. Ie. an application can call "get",
4162 pass the return value to a module it has just loaded, and that module
4163 can call its own "set" function using that value. This means the
4164 module's "ERR" operations will use (and modify) the error state in the
4165 application and not in its own statically linked copy of OpenSSL code.
4168 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4169 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4170 the operation, and provides a more encapsulated way for external code
4171 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4172 to use these functions rather than manually incrementing the counts.
4174 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4177 *) Add EVP test program.
4180 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4183 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4184 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4185 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4186 These allow a CRL to be built without having to access X509_CRL fields
4187 directly. Modify 'ca' application to use new functions.
4190 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4191 bug workarounds. Rollback attack detection is a security feature.
4192 The problem will only arise on OpenSSL servers when TLSv1 is not
4193 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4194 Software authors not wanting to support TLSv1 will have special reasons
4195 for their choice and can explicitly enable this option.
4196 [Bodo Moeller, Lutz Jaenicke]
4198 *) Rationalise EVP so it can be extended: don't include a union of
4199 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4200 (similar to those existing for EVP_CIPHER_CTX).
4205 EVP_MD_CTX_init(&md); /* new function call */
4206 EVP_DigestInit(&md, EVP_sha1());
4207 EVP_DigestUpdate(&md, in, len);
4208 EVP_DigestFinal(&md, out, NULL);
4209 EVP_MD_CTX_cleanup(&md); /* new function call */
4213 *) Make DES key schedule conform to the usual scheme, as well as
4214 correcting its structure. This means that calls to DES functions
4215 now have to pass a pointer to a des_key_schedule instead of a
4216 plain des_key_schedule (which was actually always a pointer
4219 des_key_schedule ks;
4221 des_set_key_checked(..., &ks);
4222 des_ncbc_encrypt(..., &ks, ...);
4224 (Note that a later change renames 'des_...' into 'DES_...'.)
4227 *) Initial reduction of linker bloat: the use of some functions, such as
4228 PEM causes large amounts of unused functions to be linked in due to
4229 poor organisation. For example pem_all.c contains every PEM function
4230 which has a knock on effect of linking in large amounts of (unused)
4231 ASN1 code. Grouping together similar functions and splitting unrelated
4232 functions prevents this.
4235 *) Cleanup of EVP macros.
4238 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4239 correct _ecb suffix.
4242 *) Add initial OCSP responder support to ocsp application. The
4243 revocation information is handled using the text based index
4244 use by the ca application. The responder can either handle
4245 requests generated internally, supplied in files (for example
4246 via a CGI script) or using an internal minimal server.
4249 *) Add configuration choices to get zlib compression for TLS.
4252 *) Changes to Kerberos SSL for RFC 2712 compliance:
4253 1. Implemented real KerberosWrapper, instead of just using
4254 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4255 2. Implemented optional authenticator field of KerberosWrapper.
4257 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4258 and authenticator structs; see crypto/krb5/.
4260 Generalized Kerberos calls to support multiple Kerberos libraries.
4261 [Vern Staats <staatsvr@asc.hpc.mil>,
4262 Jeffrey Altman <jaltman@columbia.edu>
4263 via Richard Levitte]
4265 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4266 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4267 values for each of the key sizes rather than having just
4268 parameters (and 'speed' generating keys each time).
4271 *) Speed up EVP routines.
4274 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
projects / openssl.git / blob