5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
8 and POST to handle Dual EC cases.
11 *) Add support for canonical generation of DSA parameter 'g'. See
14 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
15 POST to handle HMAC cases.
18 *) Add functions FIPS_module_version() and FIPS_module_version_text()
19 to return numberical and string versions of the FIPS module number.
22 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
23 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
24 outside the validated module in the FIPS capable OpenSSL.
27 *) Minor change to DRBG entropy callback semantics. In some cases
28 there is no mutiple of the block length between min_len and
29 max_len. Allow the callback to return more than max_len bytes
30 of entropy but discard any extra: it is the callback's responsibility
31 to ensure that the extra data discarded does not impact the
32 requested amount of entropy.
35 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
36 information in FIPS186-3, SP800-57 and SP800-131A.
39 *) CCM support via EVP. Interface is very similar to GCM case except we
40 must supply all data in one chunk (i.e. no update, final) and the
41 message length must be supplied if AAD is used. Add algorithm test
45 *) Initial version of POST overhaul. Add POST callback to allow the status
46 of POST to be monitored and/or failures induced. Modify fips_test_suite
47 to use callback. Always run all selftests even if one fails.
50 *) XTS support including algorithm test driver in the fips_gcmtest program.
51 Note: this does increase the maximum key length from 32 to 64 bytes but
52 there should be no binary compatibility issues as existing applications
53 will never use XTS mode.
56 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
57 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
58 performs algorithm blocking for unapproved PRNG types. Also do not
59 set PRNG type in FIPS_mode_set(): leave this to the application.
60 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
61 the standard OpenSSL PRNG: set additional data to a date time vector.
64 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
65 This shouldn't present any incompatibility problems because applications
66 shouldn't be using these directly and any that are will need to rethink
67 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
70 *) Extensive self tests and health checking required by SP800-90 DRBG.
71 Remove strength parameter from FIPS_drbg_instantiate and always
72 instantiate at maximum supported strength.
75 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
78 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
81 *) New function DH_compute_key_padded() to compute a DH key and pad with
82 leading zeroes if needed: this complies with SP800-56A et al.
85 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
86 anything, incomplete, subject to change and largely untested at present.
89 *) Modify fipscanisteronly build option to only build the necessary object
90 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
93 *) Add experimental option FIPSSYMS to give all symbols in
94 fipscanister.o and FIPS or fips prefix. This will avoid
95 conflicts with future versions of OpenSSL. Add perl script
96 util/fipsas.pl to preprocess assembly language source files
97 and rename any affected symbols.
100 *) Add selftest checks and algorithm block of non-fips algorithms in
101 FIPS mode. Remove DES2 from selftests.
104 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
105 return internal method without any ENGINE dependencies. Add new
106 tiny fips sign and verify functions.
109 *) New build option no-ec2m to disable characteristic 2 code.
112 *) New build option "fipscanisteronly". This only builds fipscanister.o
113 and (currently) associated fips utilities. Uses the file Makefile.fips
114 instead of Makefile.org as the prototype.
117 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
118 Update fips_gcmtest to use IV generator.
121 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
122 setting output buffer to NULL. The *Final function must be
123 called although it will not retrieve any additional data. The tag
124 can be set or retrieved with a ctrl. The IV length is by default 12
125 bytes (96 bits) but can be set to an alternative value. If the IV
126 length exceeds the maximum IV length (currently 16 bytes) it cannot be
130 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
131 underlying do_cipher function handles all cipher semantics itself
132 including padding and finalisation. This is useful if (for example)
133 an ENGINE cipher handles block padding itself. The behaviour of
134 do_cipher is subtly changed if this flag is set: the return value
135 is the number of characters written to the output buffer (zero is
136 no longer an error code) or a negative error code. Also if the
137 input buffer is NULL and length 0 finalisation should be performed.
140 *) If a candidate issuer certificate is already part of the constructed
141 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
144 *) Improve forward-security support: add functions
146 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
147 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
149 for use by SSL/TLS servers; the callback function will be called whenever a
150 new session is created, and gets to decide whether the session may be
151 cached to make it resumable (return 0) or not (return 1). (As by the
152 SSL/TLS protocol specifications, the session_id sent by the server will be
153 empty to indicate that the session is not resumable; also, the server will
154 not generate RFC 4507 (RFC 5077) session tickets.)
156 A simple reasonable callback implementation is to return is_forward_secure.
157 This parameter will be set to 1 or 0 depending on the ciphersuite selected
158 by the SSL/TLS server library, indicating whether it can provide forward
160 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
162 *) Add Next Protocol Negotiation,
163 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
164 disabled with a no-npn flag to config or Configure. Code donated
166 [Adam Langley <agl@google.com> and Ben Laurie]
168 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
169 all platforms. Move ssize_t definition from e_os.h to the public
170 header file e_os2.h as it now appears in public header file cms.h
173 *) New function OPENSSL_gmtime_diff to find the difference in days
174 and seconds between two tm structures. This will be used to provide
175 additional functionality for ASN1_TIME.
178 *) New -sigopt option to the ca, req and x509 utilities. Additional
179 signature parameters can be passed using this option and in
183 *) Add RSA PSS signing function. This will generate and set the
184 appropriate AlgorithmIdentifiers for PSS based on those in the
185 corresponding EVP_MD_CTX structure. No application support yet.
188 *) Support for companion algorithm specific ASN1 signing routines.
189 New function ASN1_item_sign_ctx() signs a pre-initialised
190 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
191 the appropriate parameters.
194 *) Add new algorithm specific ASN1 verification initialisation function
195 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
196 handling will be the same no matter what EVP_PKEY_METHOD is used.
197 Add a PSS handler to support verification of PSS signatures: checked
198 against a number of sample certificates.
201 *) Add signature printing for PSS. Add PSS OIDs.
202 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
204 *) Add algorithm specific signature printing. An individual ASN1 method
205 can now print out signatures instead of the standard hex dump.
207 More complex signatures (e.g. PSS) can print out more meaningful
208 information. Include DSA version that prints out the signature
212 *) Add -trusted_first option which attempts to find certificates in the
213 trusted store even if an untrusted chain is also supplied.
216 *) Initial experimental support for explicitly trusted non-root CAs.
217 OpenSSL still tries to build a complete chain to a root but if an
218 intermediate CA has a trust setting included that is used. The first
219 setting is used: whether to trust or reject.
222 *) New -verify_name option in command line utilities to set verification
226 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
227 Add CMAC pkey methods.
230 *) Experiemental regnegotiation in s_server -www mode. If the client
231 browses /reneg connection is renegotiated. If /renegcert it is
232 renegotiated requesting a certificate.
235 *) Add an "external" session cache for debugging purposes to s_server. This
236 should help trace issues which normally are only apparent in deployed
237 multi-process servers.
240 *) Experiemental password based recipient info support for CMS library:
241 implementing RFC3211.
244 *) Split password based encryption into PBES2 and PBKDF2 functions. This
245 neatly separates the code into cipher and PBE sections and is required
246 for some algorithms that split PBES2 into separate pieces (such as
250 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
251 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
252 BIO_set_cipher() and some obscure PEM functions were changed so they
253 can now return an error. The RAND changes required a change to the
254 RAND_METHOD structure.
257 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
258 a gcc attribute to warn if the result of a function is ignored. This
259 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
260 whose return value is often ignored.
263 Changes between 1.0.0e and 1.0.1 [xx XXX xxxx]
265 *) Session-handling fixes:
266 - Fix handling of connections that are resuming with a session ID,
267 but also support Session Tickets.
268 - Fix a bug that suppressed issuing of a new ticket if the client
269 presented a ticket with an expired session.
270 - Try to set the ticket lifetime hint to something reasonable.
271 - Make tickets shorter by excluding irrelevant information.
272 - On the client side, don't ignore renewed tickets.
273 [Adam Langley, Bodo Moeller (Google)]
275 *) Fix PSK session representation.
278 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
280 This work was sponsored by Intel.
283 *) Add GCM support to TLS library. Some custom code is needed to split
284 the IV between the fixed (from PRF) and explicit (from TLS record)
285 portions. This adds all GCM ciphersuites supported by RFC5288 and
286 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
287 add a special AESGCM string for GCM only.
290 *) Expand range of ctrls for AES GCM. Permit setting invocation
291 field on decrypt and retrieval of invocation field only on encrypt.
294 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
295 As required by RFC5289 these ciphersuites cannot be used if for
296 versions of TLS earlier than 1.2.
299 *) For FIPS capable OpenSSL interpret a NULL default public key method
300 as unset and return the appopriate default but do *not* set the default.
301 This means we can return the appopriate method in applications that
302 swicth between FIPS and non-FIPS modes.
305 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
306 ENGINE is used then we cannot handle that in the FIPS module so we
307 keep original code iff non-FIPS operations are allowed.
310 *) Add -attime option to openssl verify.
311 [Peter Eckersley <pde@eff.org> and Ben Laurie]
313 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
316 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
317 FIPS EC methods unconditionally for now.
320 *) New build option no-ec2m to disable characteristic 2 code.
323 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
324 all cases can be covered as some introduce binary incompatibilities.
327 *) Redirect RSA operations to FIPS module including keygen,
328 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
331 *) Add similar low level API blocking to ciphers.
334 *) Low level digest APIs are not approved in FIPS mode: any attempt
335 to use these will cause a fatal error. Applications that *really* want
336 to use them can use the private_* version instead.
339 *) Redirect cipher operations to FIPS module for FIPS builds.
342 *) Redirect digest operations to FIPS module for FIPS builds.
345 *) Update build system to add "fips" flag which will link in fipscanister.o
346 for static and shared library builds embedding a signature if needed.
349 *) Output TLS supported curves in preference order instead of numerical
350 order. This is currently hardcoded for the highest order curves first.
351 This should be configurable so applications can judge speed vs strength.
354 *) Add TLS v1.2 server support for client authentication.
357 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
361 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
362 FIPS modules versions.
365 *) Add TLS v1.2 client side support for client authentication. Keep cache
366 of handshake records longer as we don't know the hash algorithm to use
367 until after the certificate request message is received.
370 *) Initial TLS v1.2 client support. Add a default signature algorithms
371 extension including all the algorithms we support. Parse new signature
372 format in client key exchange. Relax some ECC signing restrictions for
373 TLS v1.2 as indicated in RFC5246.
376 *) Add server support for TLS v1.2 signature algorithms extension. Switch
377 to new signature format when needed using client digest preference.
378 All server ciphersuites should now work correctly in TLS v1.2. No client
379 support yet and no support for client certificates.
382 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
383 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
384 ciphersuites. At present only RSA key exchange ciphersuites work with
385 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
386 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
387 and version checking.
390 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
391 with this defined it will not be affected by any changes to ssl internal
392 structures. Add several utility functions to allow openssl application
393 to work with OPENSSL_NO_SSL_INTERN defined.
397 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
399 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
402 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
403 elliptic curve NIST-P224 with constant-time single point multiplication on
404 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
405 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
406 flexible implementations).
408 The implementation requires support for the nonstandard type __uint128_t,
409 and so is disabled by default. To include this in your build of OpenSSL,
410 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
411 and run "make depend" (or "make update").
412 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
414 *) Permit abbreviated handshakes when renegotiating using the function
415 SSL_renegotiate_abbreviated().
416 [Robin Seggelmann <seggelmann@fh-muenster.de>]
418 *) Add call to ENGINE_register_all_complete() to
419 ENGINE_load_builtin_engines(), so some implementations get used
420 automatically instead of needing explicit application support.
423 *) Add support for TLS key exporter as described in RFC5705.
424 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
426 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
427 a few changes are required:
429 Add SSL_OP_NO_TLSv1_1 flag.
431 Update version checking logic to handle version 1.1.
432 Add explicit IV handling (ported from DTLS code).
433 Add command line options to s_client/s_server.
436 Changes between 1.0.0d and 1.0.0e [xx XXX xxxx]
438 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
439 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
440 [Kaspar Brand <ossl@velox.ch>]
442 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
443 for multi-threaded use of ECDH. (CVE-2011-3210)
444 [Adam Langley (Google)]
446 *) Fix x509_name_ex_d2i memory leak on bad inputs.
449 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
450 signature public key algorithm by using OID xref utilities instead.
451 Before this you could only use some ECC ciphersuites with SHA1 only.
454 *) Add protection against ECDSA timing attacks as mentioned in the paper
455 by Billy Bob Brumley and Nicola Tuveri, see:
457 http://eprint.iacr.org/2011/232.pdf
459 [Billy Bob Brumley and Nicola Tuveri]
461 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
463 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
464 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
466 *) Fix bug in string printing code: if *any* escaping is enabled we must
467 escape the escape character (backslash) or the resulting string is
471 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
473 *) Disable code workaround for ancient and obsolete Netscape browsers
474 and servers: an attacker can use it in a ciphersuite downgrade attack.
475 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
478 *) Fixed J-PAKE implementation error, originally discovered by
479 Sebastien Martini, further info and confirmation from Stefan
480 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
483 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
485 *) Fix extension code to avoid race conditions which can result in a buffer
486 overrun vulnerability: resumed sessions must not be modified as they can
487 be shared by multiple threads. CVE-2010-3864
490 *) Fix WIN32 build system to correctly link an ENGINE directory into
494 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
496 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
498 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
500 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
502 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
503 context. The operation can be customised via the ctrl mechanism in
504 case ENGINEs want to include additional functionality.
507 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
510 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
511 output hashes compatible with older versions of OpenSSL.
512 [Willy Weisz <weisz@vcpc.univie.ac.at>]
514 *) Fix compression algorithm handling: if resuming a session use the
515 compression algorithm of the resumed session instead of determining
516 it from client hello again. Don't allow server to change algorithm.
519 *) Add load_crls() function to apps tidying load_certs() too. Add option
520 to verify utility to allow additional CRLs to be included.
523 *) Update OCSP request code to permit adding custom headers to the request:
524 some responders need this.
527 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
529 [Julia Lawall <julia@diku.dk>]
531 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
532 needlessly dereferenced structures, used obsolete functions and
533 didn't handle all updated verify codes correctly.
536 *) Disable MD2 in the default configuration.
539 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
540 indicate the initial BIO being pushed or popped. This makes it possible
541 to determine whether the BIO is the one explicitly called or as a result
542 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
543 it handles reference counts correctly and doesn't zero out the I/O bio
544 when it is not being explicitly popped. WARNING: applications which
545 included workarounds for the old buggy behaviour will need to be modified
546 or they could free up already freed BIOs.
549 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
550 renaming to all platforms (within the 0.9.8 branch, this was
551 done conditionally on Netware platforms to avoid a name clash).
552 [Guenter <lists@gknw.net>]
554 *) Add ECDHE and PSK support to DTLS.
555 [Michael Tuexen <tuexen@fh-muenster.de>]
557 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
561 *) Add "missing" function EVP_MD_flags() (without this the only way to
562 retrieve a digest flags is by accessing the structure directly. Update
563 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
564 or cipher is registered as in the "from" argument. Print out all
565 registered digests in the dgst usage message instead of manually
566 attempting to work them out.
569 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
570 this allows the use of compression and extensions. Change default cipher
571 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
572 by default unless an application cipher string requests it.
575 *) Alter match criteria in PKCS12_parse(). It used to try to use local
576 key ids to find matching certificates and keys but some PKCS#12 files
577 don't follow the (somewhat unwritten) rules and this strategy fails.
578 Now just gather all certificates together and the first private key
579 then look for the first certificate that matches the key.
582 *) Support use of registered digest and cipher names for dgst and cipher
583 commands instead of having to add each one as a special case. So now
590 openssl dgst -sha256 foo
592 and this works for ENGINE based algorithms too.
596 *) Update Gost ENGINE to support parameter files.
597 [Victor B. Wagner <vitus@cryptocom.ru>]
599 *) Support GeneralizedTime in ca utility.
600 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
602 *) Enhance the hash format used for certificate directory links. The new
603 form uses the canonical encoding (meaning equivalent names will work
604 even if they aren't identical) and uses SHA1 instead of MD5. This form
605 is incompatible with the older format and as a result c_rehash should
606 be used to rebuild symbolic links.
609 *) Make PKCS#8 the default write format for private keys, replacing the
610 traditional format. This form is standardised, more secure and doesn't
611 include an implicit MD5 dependency.
614 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
615 committed to OpenSSL should pass this lot as a minimum.
618 *) Add session ticket override functionality for use by EAP-FAST.
619 [Jouni Malinen <j@w1.fi>]
621 *) Modify HMAC functions to return a value. Since these can be implemented
622 in an ENGINE errors can occur.
625 *) Type-checked OBJ_bsearch_ex.
628 *) Type-checked OBJ_bsearch. Also some constification necessitated
629 by type-checking. Still to come: TXT_DB, bsearch(?),
630 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
634 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
635 seconds to a tm structure directly, instead of going through OS
636 specific date routines. This avoids any issues with OS routines such
637 as the year 2038 bug. New *_adj() functions for ASN1 time structures
638 and X509_time_adj_ex() to cover the extended range. The existing
639 X509_time_adj() is still usable and will no longer have any date issues.
642 *) Delta CRL support. New use deltas option which will attempt to locate
643 and search any appropriate delta CRLs available.
645 This work was sponsored by Google.
648 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
649 code and add additional score elements. Validate alternate CRL paths
650 as part of the CRL checking and indicate a new error "CRL path validation
651 error" in this case. Applications wanting additional details can use
652 the verify callback and check the new "parent" field. If this is not
653 NULL CRL path validation is taking place. Existing applications wont
654 see this because it requires extended CRL support which is off by
657 This work was sponsored by Google.
660 *) Support for freshest CRL extension.
662 This work was sponsored by Google.
665 *) Initial indirect CRL support. Currently only supported in the CRLs
666 passed directly and not via lookup. Process certificate issuer
667 CRL entry extension and lookup CRL entries by bother issuer name
668 and serial number. Check and process CRL issuer entry in IDP extension.
670 This work was sponsored by Google.
673 *) Add support for distinct certificate and CRL paths. The CRL issuer
674 certificate is validated separately in this case. Only enabled if
675 an extended CRL support flag is set: this flag will enable additional
676 CRL functionality in future.
678 This work was sponsored by Google.
681 *) Add support for policy mappings extension.
683 This work was sponsored by Google.
686 *) Fixes to pathlength constraint, self issued certificate handling,
687 policy processing to align with RFC3280 and PKITS tests.
689 This work was sponsored by Google.
692 *) Support for name constraints certificate extension. DN, email, DNS
693 and URI types are currently supported.
695 This work was sponsored by Google.
698 *) To cater for systems that provide a pointer-based thread ID rather
699 than numeric, deprecate the current numeric thread ID mechanism and
700 replace it with a structure and associated callback type. This
701 mechanism allows a numeric "hash" to be extracted from a thread ID in
702 either case, and on platforms where pointers are larger than 'long',
703 mixing is done to help ensure the numeric 'hash' is usable even if it
704 can't be guaranteed unique. The default mechanism is to use "&errno"
705 as a pointer-based thread ID to distinguish between threads.
707 Applications that want to provide their own thread IDs should now use
708 CRYPTO_THREADID_set_callback() to register a callback that will call
709 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
711 Note that ERR_remove_state() is now deprecated, because it is tied
712 to the assumption that thread IDs are numeric. ERR_remove_state(0)
713 to free the current thread's error state should be replaced by
714 ERR_remove_thread_state(NULL).
716 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
717 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
718 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
719 application was previously providing a numeric thread callback that
720 was inappropriate for distinguishing threads, then uniqueness might
721 have been obtained with &errno that happened immediately in the
722 intermediate development versions of OpenSSL; this is no longer the
723 case, the numeric thread callback will now override the automatic use
725 [Geoff Thorpe, with help from Bodo Moeller]
727 *) Initial support for different CRL issuing certificates. This covers a
728 simple case where the self issued certificates in the chain exist and
729 the real CRL issuer is higher in the existing chain.
731 This work was sponsored by Google.
734 *) Removed effectively defunct crypto/store from the build.
737 *) Revamp of STACK to provide stronger type-checking. Still to come:
738 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
739 ASN1_STRING, CONF_VALUE.
742 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
743 RAM on SSL connections. This option can save about 34k per idle SSL.
746 *) Revamp of LHASH to provide stronger type-checking. Still to come:
747 STACK, TXT_DB, bsearch, qsort.
750 *) Initial support for Cryptographic Message Syntax (aka CMS) based
751 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
752 support for data, signedData, compressedData, digestedData and
753 encryptedData, envelopedData types included. Scripts to check against
754 RFC4134 examples draft and interop and consistency checks of many
755 content types and variants.
758 *) Add options to enc utility to support use of zlib compression BIO.
761 *) Extend mk1mf to support importing of options and assembly language
762 files from Configure script, currently only included in VC-WIN32.
763 The assembly language rules can now optionally generate the source
764 files from the associated perl scripts.
767 *) Implement remaining functionality needed to support GOST ciphersuites.
768 Interop testing has been performed using CryptoPro implementations.
769 [Victor B. Wagner <vitus@cryptocom.ru>]
771 *) s390x assembler pack.
774 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
778 *) Implement Opaque PRF Input TLS extension as specified in
779 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
780 official specification yet and no extension type assignment by
781 IANA exists, this extension (for now) will have to be explicitly
782 enabled when building OpenSSL by providing the extension number
783 to use. For example, specify an option
785 -DTLSEXT_TYPE_opaque_prf_input=0x9527
787 to the "config" or "Configure" script to enable the extension,
788 assuming extension number 0x9527 (which is a completely arbitrary
789 and unofficial assignment based on the MD5 hash of the Internet
790 Draft). Note that by doing so, you potentially lose
791 interoperability with other TLS implementations since these might
792 be using the same extension number for other purposes.
794 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
795 opaque PRF input value to use in the handshake. This will create
796 an interal copy of the length-'len' string at 'src', and will
797 return non-zero for success.
799 To get more control and flexibility, provide a callback function
802 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
803 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
807 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
810 Callback function 'cb' will be called in handshakes, and is
811 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
812 Argument 'arg' is for application purposes (the value as given to
813 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
814 be provided to the callback function). The callback function
815 has to return non-zero to report success: usually 1 to use opaque
816 PRF input just if possible, or 2 to enforce use of the opaque PRF
817 input. In the latter case, the library will abort the handshake
818 if opaque PRF input is not successfully negotiated.
820 Arguments 'peerinput' and 'len' given to the callback function
821 will always be NULL and 0 in the case of a client. A server will
822 see the client's opaque PRF input through these variables if
823 available (NULL and 0 otherwise). Note that if the server
824 provides an opaque PRF input, the length must be the same as the
825 length of the client's opaque PRF input.
827 Note that the callback function will only be called when creating
828 a new session (session resumption can resume whatever was
829 previously negotiated), and will not be called in SSL 2.0
830 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
831 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
832 for applications that need to enforce opaque PRF input.
836 *) Update ssl code to support digests other than SHA1+MD5 for handshake
839 [Victor B. Wagner <vitus@cryptocom.ru>]
841 *) Add RFC4507 support to OpenSSL. This includes the corrections in
842 RFC4507bis. The encrypted ticket format is an encrypted encoded
843 SSL_SESSION structure, that way new session features are automatically
846 If a client application caches session in an SSL_SESSION structure
847 support is transparent because tickets are now stored in the encoded
850 The SSL_CTX structure automatically generates keys for ticket
851 protection in servers so again support should be possible
852 with no application modification.
854 If a client or server wishes to disable RFC4507 support then the option
855 SSL_OP_NO_TICKET can be set.
857 Add a TLS extension debugging callback to allow the contents of any client
858 or server extensions to be examined.
860 This work was sponsored by Google.
863 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
864 OpenSSL should now compile cleanly on gcc 4.2
865 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
867 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
868 support including streaming MAC support: this is required for GOST
870 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
872 *) Add option -stream to use PKCS#7 streaming in smime utility. New
873 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
874 to output in BER and PEM format.
877 *) Experimental support for use of HMAC via EVP_PKEY interface. This
878 allows HMAC to be handled via the EVP_DigestSign*() interface. The
879 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
880 ENGINE support for HMAC keys which are unextractable. New -mac and
881 -macopt options to dgst utility.
884 *) New option -sigopt to dgst utility. Update dgst to use
885 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
886 alternative signing paramaters such as X9.31 or PSS in the dgst
890 *) Change ssl_cipher_apply_rule(), the internal function that does
891 the work each time a ciphersuite string requests enabling
892 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
893 removing ("!foo+bar") a class of ciphersuites: Now it maintains
894 the order of disabled ciphersuites such that those ciphersuites
895 that most recently went from enabled to disabled not only stay
896 in order with respect to each other, but also have higher priority
897 than other disabled ciphersuites the next time ciphersuites are
900 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
901 the same ciphersuites as with "HIGH" alone, but in a specific
902 order where the PSK ciphersuites come first (since they are the
903 most recently disabled ciphersuites when "HIGH" is parsed).
905 Also, change ssl_create_cipher_list() (using this new
906 funcionality) such that between otherwise identical
907 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
911 *) Change ssl_create_cipher_list() so that it automatically
912 arranges the ciphersuites in reasonable order before starting
913 to process the rule string. Thus, the definition for "DEFAULT"
914 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
915 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
916 This makes it much easier to arrive at a reasonable default order
917 in applications for which anonymous ciphers are OK (meaning
918 that you can't actually use DEFAULT).
919 [Bodo Moeller; suggested by Victor Duchovni]
921 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
922 processing) into multiple integers instead of setting
923 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
924 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
925 (These masks as well as the individual bit definitions are hidden
926 away into the non-exported interface ssl/ssl_locl.h, so this
927 change to the definition of the SSL_CIPHER structure shouldn't
928 affect applications.) This give us more bits for each of these
929 categories, so there is no longer a need to coagulate AES128 and
930 AES256 into a single algorithm bit, and to coagulate Camellia128
931 and Camellia256 into a single algorithm bit, which has led to all
934 Thus, among other things, the kludge introduced in 0.9.7m and
935 0.9.8e for masking out AES256 independently of AES128 or masking
936 out Camellia256 independently of AES256 is not needed here in 0.9.9.
938 With the change, we also introduce new ciphersuite aliases that
939 so far were missing: "AES128", "AES256", "CAMELLIA128", and
943 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
944 Use the leftmost N bytes of the signature input if the input is
945 larger than the prime q (with N being the size in bytes of q).
948 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
949 it yet and it is largely untested.
952 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
955 *) Initial incomplete changes to avoid need for function casts in OpenSSL
956 some compilers (gcc 4.2 and later) reject their use. Safestack is
957 reimplemented. Update ASN1 to avoid use of legacy functions.
960 *) Win32/64 targets are linked with Winsock2.
963 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
964 to external functions. This can be used to increase CRL handling
965 efficiency especially when CRLs are very large by (for example) storing
966 the CRL revoked certificates in a database.
969 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
970 new CRLs added to a directory can be used. New command line option
971 -verify_return_error to s_client and s_server. This causes real errors
972 to be returned by the verify callback instead of carrying on no matter
973 what. This reflects the way a "real world" verify callback would behave.
976 *) GOST engine, supporting several GOST algorithms and public key formats.
977 Kindly donated by Cryptocom.
980 *) Partial support for Issuing Distribution Point CRL extension. CRLs
981 partitioned by DP are handled but no indirect CRL or reason partitioning
982 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
983 selected via a scoring technique which handles IDP and AKID in CRLs.
986 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
987 will ultimately be used for all verify operations: this will remove the
988 X509_STORE dependency on certificate verification and allow alternative
989 lookup methods. X509_STORE based implementations of these two callbacks.
992 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
993 Modify get_crl() to find a valid (unexpired) CRL if possible.
996 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
997 this would be called X509_CRL_cmp() but that name is already used by
998 a function that just compares CRL issuer names. Cache several CRL
999 extensions in X509_CRL structure and cache CRLDP in X509.
1002 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1003 this maps equivalent X509_NAME structures into a consistent structure.
1004 Name comparison can then be performed rapidly using memcmp().
1007 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1011 *) Allow digests to supply their own micalg string for S/MIME type using
1012 the ctrl EVP_MD_CTRL_MICALG.
1015 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1016 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1017 ctrl. It can then customise the structure before and/or after signing
1021 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1022 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1023 to free up any added signature OIDs.
1026 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1027 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1028 digest and cipher tables. New options added to openssl utility:
1029 list-message-digest-algorithms and list-cipher-algorithms.
1032 *) Change the array representation of binary polynomials: the list
1033 of degrees of non-zero coefficients is now terminated with -1.
1034 Previously it was terminated with 0, which was also part of the
1035 value; thus, the array representation was not applicable to
1036 polynomials where t^0 has coefficient zero. This change makes
1037 the array representation useful in a more general context.
1040 *) Various modifications and fixes to SSL/TLS cipher string
1041 handling. For ECC, the code now distinguishes between fixed ECDH
1042 with RSA certificates on the one hand and with ECDSA certificates
1043 on the other hand, since these are separate ciphersuites. The
1044 unused code for Fortezza ciphersuites has been removed.
1046 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1047 (not "ECDHE"). For consistency with the code for DH
1048 certificates, use of ECDH certificates is now considered ECDH
1049 authentication, not RSA or ECDSA authentication (the latter is
1050 merely the CA's signing algorithm and not actively used in the
1053 The temporary ciphersuite alias "ECCdraft" is no longer
1054 available, and ECC ciphersuites are no longer excluded from "ALL"
1055 and "DEFAULT". The following aliases now exist for RFC 4492
1056 ciphersuites, most of these by analogy with the DH case:
1058 kECDHr - ECDH cert, signed with RSA
1059 kECDHe - ECDH cert, signed with ECDSA
1060 kECDH - ECDH cert (signed with either RSA or ECDSA)
1061 kEECDH - ephemeral ECDH
1062 ECDH - ECDH cert or ephemeral ECDH
1068 AECDH - anonymous ECDH
1069 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1073 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1074 Use correct micalg parameters depending on digest(s) in signed message.
1077 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1078 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1081 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1082 an engine to register a method. Add ENGINE lookups for methods and
1083 functional reference processing.
1086 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1087 EVP_{Sign,Verify}* which allow an application to customise the signature
1091 *) New -resign option to smime utility. This adds one or more signers
1092 to an existing PKCS#7 signedData structure. Also -md option to use an
1093 alternative message digest algorithm for signing.
1096 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1097 create PKCS7 structures containing multiple signers. Update smime
1098 application to support multiple signers.
1101 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1105 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1106 Reorganize PBE internals to lookup from a static table using NIDs,
1107 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1108 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1109 PRF which will be automatically used with PBES2.
1112 *) Replace the algorithm specific calls to generate keys in "req" with the
1116 *) Update PKCS#7 enveloped data routines to use new API. This is now
1117 supported by any public key method supporting the encrypt operation. A
1118 ctrl is added to allow the public key algorithm to examine or modify
1119 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1123 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1124 a default digest type to use. In most cases this will be SHA1 but some
1125 algorithms (such as GOST) need to specify an alternative digest. The
1126 return value indicates how strong the prefernce is 1 means optional and
1127 2 is mandatory (that is it is the only supported type). Modify
1128 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1129 use the default md. Update openssl utilities to use the default digest
1130 type for signing if it is not explicitly indicated.
1133 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1134 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1135 signing method from the key type. This effectively removes the link
1136 between digests and public key types.
1139 *) Add an OID cross reference table and utility functions. Its purpose is to
1140 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1141 rsaEncryption. This will allow some of the algorithm specific hackery
1142 needed to use the correct OID to be removed.
1145 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1146 structures for PKCS7_sign(). They are now set up by the relevant public
1150 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1153 *) Add support for key derivation (agreement) in the API, DH method and
1157 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1158 public and private key formats. As a side effect these add additional
1159 command line functionality not previously available: DSA signatures can be
1160 generated and verified using pkeyutl and DH key support and generation in
1165 [Oliver Tappe <zooey@hirschkaefer.de>]
1167 *) New make target "install_html_docs" installs HTML renditions of the
1169 [Oliver Tappe <zooey@hirschkaefer.de>]
1171 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1172 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1173 support key and parameter generation and add initial key generation
1174 functionality for RSA.
1177 *) Add functions for main EVP_PKEY_method operations. The undocumented
1178 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1179 EVP_PKEY_{encrypt,decrypt}_old.
1182 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1183 key API, doesn't do much yet.
1186 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1187 public key algorithms. New option to openssl utility:
1188 "list-public-key-algorithms" to print out info.
1191 *) Implement the Supported Elliptic Curves Extension for
1192 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1195 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1196 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1199 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1200 utilities such as rsa, dsa, dsaparam etc except they process any key
1204 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1205 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1206 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1210 *) Initial support for pluggable public key ASN1.
1211 De-spaghettify the public key ASN1 handling. Move public and private
1212 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1213 algorithm specific handling to a single module within the relevant
1214 algorithm directory. Add functions to allow (near) opaque processing
1215 of public and private key structures.
1218 *) Implement the Supported Point Formats Extension for
1219 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1222 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1223 for the psk identity [hint] and the psk callback functions to the
1224 SSL_SESSION, SSL and SSL_CTX structure.
1227 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1231 SSL_CTX_use_psk_identity_hint
1232 SSL_get_psk_identity_hint
1233 SSL_get_psk_identity
1234 SSL_use_psk_identity_hint
1236 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1238 *) Add RFC 3161 compliant time stamp request creation, response generation
1239 and response verification functionality.
1240 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1242 *) Add initial support for TLS extensions, specifically for the server_name
1243 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1244 have new members for a host name. The SSL data structure has an
1245 additional member SSL_CTX *initial_ctx so that new sessions can be
1246 stored in that context to allow for session resumption, even after the
1247 SSL has been switched to a new SSL_CTX in reaction to a client's
1248 server_name extension.
1250 New functions (subject to change):
1252 SSL_get_servername()
1253 SSL_get_servername_type()
1256 New CTRL codes and macros (subject to change):
1258 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1259 - SSL_CTX_set_tlsext_servername_callback()
1260 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1261 - SSL_CTX_set_tlsext_servername_arg()
1262 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1264 openssl s_client has a new '-servername ...' option.
1266 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1267 '-key2 ...', '-servername_fatal' (subject to change). This allows
1268 testing the HostName extension for a specific single host name ('-cert'
1269 and '-key' remain fallbacks for handshakes without HostName
1270 negotiation). If the unrecogninzed_name alert has to be sent, this by
1271 default is a warning; it becomes fatal with the '-servername_fatal'
1274 [Peter Sylvester, Remy Allais, Christophe Renou]
1276 *) Whirlpool hash implementation is added.
1279 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1280 bn(64,32). Because of instruction set limitations it doesn't have
1281 any negative impact on performance. This was done mostly in order
1282 to make it possible to share assembler modules, such as bn_mul_mont
1283 implementations, between 32- and 64-bit builds without hassle.
1286 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1287 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1291 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1292 dedicated Montgomery multiplication procedure, is introduced.
1293 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1294 "64-bit" performance on certain 32-bit targets.
1297 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1298 in SSL structures. New SSL ctrl to set maximum send fragment size.
1299 Save memory by seeting the I/O buffer sizes dynamically instead of
1300 using the maximum available value.
1303 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1304 in addition to the text details.
1307 *) Very, very preliminary EXPERIMENTAL support for printing of general
1308 ASN1 structures. This currently produces rather ugly output and doesn't
1309 handle several customised structures at all.
1312 *) Integrated support for PVK file format and some related formats such
1313 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1314 these in the 'rsa' and 'dsa' utilities.
1317 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1320 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1321 place for the (very old) "NETSCAPE" format certificates which are now
1322 handled using new ASN1 code equivalents.
1325 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1326 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1327 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1330 *) Modify CRL distribution points extension code to print out previously
1331 unsupported fields. Enhance extension setting code to allow setting of
1335 *) Add print and set support for Issuing Distribution Point CRL extension.
1338 *) Change 'Configure' script to enable Camellia by default.
1341 Changes between 0.9.8r and 0.9.8s [xx XXX xxxx]
1343 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1344 for multi-threaded use of ECDH.
1345 [Adam Langley (Google)]
1347 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1350 *) Add protection against ECDSA timing attacks as mentioned in the paper
1351 by Billy Bob Brumley and Nicola Tuveri, see:
1353 http://eprint.iacr.org/2011/232.pdf
1355 [Billy Bob Brumley and Nicola Tuveri]
1357 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1359 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1360 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1362 *) Fix bug in string printing code: if *any* escaping is enabled we must
1363 escape the escape character (backslash) or the resulting string is
1367 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1369 *) Disable code workaround for ancient and obsolete Netscape browsers
1370 and servers: an attacker can use it in a ciphersuite downgrade attack.
1371 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1374 *) Fixed J-PAKE implementation error, originally discovered by
1375 Sebastien Martini, further info and confirmation from Stefan
1376 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1379 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1381 *) Fix extension code to avoid race conditions which can result in a buffer
1382 overrun vulnerability: resumed sessions must not be modified as they can
1383 be shared by multiple threads. CVE-2010-3864
1386 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1389 *) Don't reencode certificate when calculating signature: cache and use
1390 the original encoding instead. This makes signature verification of
1391 some broken encodings work correctly.
1394 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1395 is also one of the inputs.
1396 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1398 *) Don't repeatedly append PBE algorithms to table if they already exist.
1399 Sort table on each new add. This effectively makes the table read only
1400 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1404 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1406 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1409 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1410 access or freeing data twice (CVE-2010-0742)
1411 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1413 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1414 common in certificates and some applications which only call
1415 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1419 Reduce copying into .apps and .test in makevms.com
1420 Don't try to use blank CA certificate in CA.com
1421 Allow use of C files from original directories in maketests.com
1422 [Steven M. Schweda" <sms@antinode.info>]
1424 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1426 *) When rejecting SSL/TLS records due to an incorrect version number, never
1427 update s->server with a new major version number. As of
1428 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1429 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1430 the previous behavior could result in a read attempt at NULL when
1431 receiving specific incorrect SSL/TLS records once record payload
1432 protection is active. (CVE-2010-0740)
1433 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1435 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1436 could be crashed if the relevant tables were not present (e.g. chrooted).
1437 [Tomas Hoger <thoger@redhat.com>]
1439 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1441 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1442 [Martin Olsson, Neel Mehta]
1444 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1445 accommodate for stack sorting, always a write lock!).
1448 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1449 excessive delays in the RAND_poll(): over a minute. As a workaround
1450 include a time check in the inner Heap32Next loop too.
1453 *) The code that handled flushing of data in SSL/TLS originally used the
1454 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1455 the problem outlined in PR#1949. The fix suggested there however can
1456 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1457 of Apache). So instead simplify the code to flush unconditionally.
1458 This should be fine since flushing with no data to flush is a no op.
1461 *) Handle TLS versions 2.0 and later properly and correctly use the
1462 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1463 off ancient servers have a habit of sticking around for a while...
1466 *) Modify compression code so it frees up structures without using the
1467 ex_data callbacks. This works around a problem where some applications
1468 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1469 restarting) then use compression (e.g. SSL with compression) later.
1470 This results in significant per-connection memory leaks and
1471 has caused some security issues including CVE-2008-1678 and
1475 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1476 change when encrypting or decrypting.
1479 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1480 connect and renegotiate with servers which do not support RI.
1481 Until RI is more widely deployed this option is enabled by default.
1484 *) Add "missing" ssl ctrls to clear options and mode.
1487 *) If client attempts to renegotiate and doesn't support RI respond with
1488 a no_renegotiation alert as required by RFC5746. Some renegotiating
1489 TLS clients will continue a connection gracefully when they receive
1490 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1491 waiting for a server hello which it will never receive. Now we treat a
1492 received no_renegotiation alert as a fatal error. This is because
1493 applications requesting a renegotiation might well expect it to succeed
1494 and would have no code in place to handle the server denying it so the
1495 only safe thing to do is to terminate the connection.
1498 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1499 peer supports secure renegotiation and 0 otherwise. Print out peer
1500 renegotiation support in s_client/s_server.
1503 *) Replace the highly broken and deprecated SPKAC certification method with
1504 the updated NID creation version. This should correctly handle UTF8.
1507 *) Implement RFC5746. Re-enable renegotiation but require the extension
1508 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1509 turns out to be a bad idea. It has been replaced by
1510 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1511 SSL_CTX_set_options(). This is really not recommended unless you
1512 know what you are doing.
1513 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1515 *) Fixes to stateless session resumption handling. Use initial_ctx when
1516 issuing and attempting to decrypt tickets in case it has changed during
1517 servername handling. Use a non-zero length session ID when attempting
1518 stateless session resumption: this makes it possible to determine if
1519 a resumption has occurred immediately after receiving server hello
1520 (several places in OpenSSL subtly assume this) instead of later in
1524 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1525 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1526 fixes for a few places where the return code is not checked
1528 [Julia Lawall <julia@diku.dk>]
1530 *) Add --strict-warnings option to Configure script to include devteam
1531 warnings in other configurations.
1534 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1535 makes it possible to install openssl libraries in locations which
1536 have names other than "lib", for example "/usr/lib64" which some
1538 [Steve Henson, based on patch from Jeremy Utley]
1540 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1541 X690 8.9.12 and can produce some misleading textual output of OIDs.
1542 [Steve Henson, reported by Dan Kaminsky]
1544 *) Delete MD2 from algorithm tables. This follows the recommendation in
1545 several standards that it is not used in new applications due to
1546 several cryptographic weaknesses. For binary compatibility reasons
1547 the MD2 API is still compiled in by default.
1550 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1554 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1555 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1557 [Guenter <lists@gknw.net>]
1559 *) Fix the server certificate chain building code to use X509_verify_cert(),
1560 it used to have an ad-hoc builder which was unable to cope with anything
1561 other than a simple chain.
1562 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1564 *) Don't check self signed certificate signatures in X509_verify_cert()
1565 by default (a flag can override this): it just wastes time without
1566 adding any security. As a useful side effect self signed root CAs
1567 with non-FIPS digests are now usable in FIPS mode.
1570 *) In dtls1_process_out_of_seq_message() the check if the current message
1571 is already buffered was missing. For every new message was memory
1572 allocated, allowing an attacker to perform an denial of service attack
1573 with sending out of seq handshake messages until there is no memory
1574 left. Additionally every future messege was buffered, even if the
1575 sequence number made no sense and would be part of another handshake.
1576 So only messages with sequence numbers less than 10 in advance will be
1577 buffered. (CVE-2009-1378)
1578 [Robin Seggelmann, discovered by Daniel Mentz]
1580 *) Records are buffered if they arrive with a future epoch to be
1581 processed after finishing the corresponding handshake. There is
1582 currently no limitation to this buffer allowing an attacker to perform
1583 a DOS attack with sending records with future epochs until there is no
1584 memory left. This patch adds the pqueue_size() function to detemine
1585 the size of a buffer and limits the record buffer to 100 entries.
1587 [Robin Seggelmann, discovered by Daniel Mentz]
1589 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1590 parent structure is freed. (CVE-2009-1379)
1593 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1594 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1597 [Ilya O. <vrghost@gmail.com>]
1599 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1601 *) Disable renegotiation completely - this fixes a severe security
1602 problem (CVE-2009-3555) at the cost of breaking all
1603 renegotiation. Renegotiation can be re-enabled by setting
1604 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1605 run-time. This is really not recommended unless you know what
1609 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1611 *) Don't set val to NULL when freeing up structures, it is freed up by
1612 underlying code. If sizeof(void *) > sizeof(long) this can result in
1613 zeroing past the valid field. (CVE-2009-0789)
1614 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1616 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1617 checked correctly. This would allow some invalid signed attributes to
1618 appear to verify correctly. (CVE-2009-0591)
1619 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1621 *) Reject UniversalString and BMPString types with invalid lengths. This
1622 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1623 a legal length. (CVE-2009-0590)
1626 *) Set S/MIME signing as the default purpose rather than setting it
1627 unconditionally. This allows applications to override it at the store
1631 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1632 to handle some structures.
1635 *) Improve efficiency of mem_gets: don't search whole buffer each time
1637 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1639 *) New -hex option for openssl rand.
1642 *) Print out UTF8String and NumericString when parsing ASN1.
1645 *) Support NumericString type for name components.
1648 *) Allow CC in the environment to override the automatically chosen
1649 compiler. Note that nothing is done to ensure flags work with the
1653 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1655 *) Properly check EVP_VerifyFinal() and similar return values
1657 [Ben Laurie, Bodo Moeller, Google Security Team]
1659 *) Enable TLS extensions by default.
1662 *) Allow the CHIL engine to be loaded, whether the application is
1663 multithreaded or not. (This does not release the developer from the
1664 obligation to set up the dynamic locking callbacks.)
1665 [Sander Temme <sander@temme.net>]
1667 *) Use correct exit code if there is an error in dgst command.
1668 [Steve Henson; problem pointed out by Roland Dirlewanger]
1670 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1671 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1674 *) Add experimental JPAKE support, including demo authentication in
1675 s_client and s_server.
1678 *) Set the comparison function in v3_addr_canonize().
1679 [Rob Austein <sra@hactrn.net>]
1681 *) Add support for XMPP STARTTLS in s_client.
1682 [Philip Paeps <philip@freebsd.org>]
1684 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1685 to ensure that even with this option, only ciphersuites in the
1686 server's preference list will be accepted. (Note that the option
1687 applies only when resuming a session, so the earlier behavior was
1688 just about the algorithm choice for symmetric cryptography.)
1691 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1693 *) Fix NULL pointer dereference if a DTLS server received
1694 ChangeCipherSpec as first record (CVE-2009-1386).
1697 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1698 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1701 *) The fix in 0.9.8c that supposedly got rid of unsafe
1702 double-checked locking was incomplete for RSA blinding,
1703 addressing just one layer of what turns out to have been
1704 doubly unsafe triple-checked locking.
1706 So now fix this for real by retiring the MONT_HELPER macro
1707 in crypto/rsa/rsa_eay.c.
1709 [Bodo Moeller; problem pointed out by Marius Schilder]
1711 *) Various precautionary measures:
1713 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1715 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1716 (NB: This would require knowledge of the secret session ticket key
1717 to exploit, in which case you'd be SOL either way.)
1719 - Change bn_nist.c so that it will properly handle input BIGNUMs
1720 outside the expected range.
1722 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1725 [Neel Mehta, Bodo Moeller]
1727 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1728 the load fails. Useful for distros.
1729 [Ben Laurie and the FreeBSD team]
1731 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1734 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1737 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1739 This work was sponsored by Logica.
1742 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1743 keystores. Support for SSL/TLS client authentication too.
1744 Not compiled unless enable-capieng specified to Configure.
1746 This work was sponsored by Logica.
1749 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1750 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1751 attribute creation routines such as certifcate requests and PKCS#12
1755 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1757 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1758 handshake which could lead to a cilent crash as found using the
1759 Codenomicon TLS test suite (CVE-2008-1672)
1760 [Steve Henson, Mark Cox]
1762 *) Fix double free in TLS server name extensions which could lead to
1763 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1766 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1768 Clear the error queue to ensure that error entries left from
1769 older function calls do not interfere with the correct operation.
1770 [Lutz Jaenicke, Erik de Castro Lopo]
1772 *) Remove root CA certificates of commercial CAs:
1774 The OpenSSL project does not recommend any specific CA and does not
1775 have any policy with respect to including or excluding any CA.
1776 Therefore it does not make any sense to ship an arbitrary selection
1777 of root CA certificates with the OpenSSL software.
1780 *) RSA OAEP patches to fix two separate invalid memory reads.
1781 The first one involves inputs when 'lzero' is greater than
1782 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1783 before the beginning of from). The second one involves inputs where
1784 the 'db' section contains nothing but zeroes (there is a one-byte
1785 invalid read after the end of 'db').
1786 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1788 *) Partial backport from 0.9.9-dev:
1790 Introduce bn_mul_mont (dedicated Montgomery multiplication
1791 procedure) as a candidate for BIGNUM assembler implementation.
1792 While 0.9.9-dev uses assembler for various architectures, only
1793 x86_64 is available by default here in the 0.9.8 branch, and
1794 32-bit x86 is available through a compile-time setting.
1796 To try the 32-bit x86 assembler implementation, use Configure
1797 option "enable-montasm" (which exists only for this backport).
1799 As "enable-montasm" for 32-bit x86 disclaims code stability
1800 anyway, in this constellation we activate additional code
1801 backported from 0.9.9-dev for further performance improvements,
1802 namely BN_from_montgomery_word. (To enable this otherwise,
1803 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1805 [Andy Polyakov (backport partially by Bodo Moeller)]
1807 *) Add TLS session ticket callback. This allows an application to set
1808 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1809 values. This is useful for key rollover for example where several key
1810 sets may exist with different names.
1813 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1814 This was broken until now in 0.9.8 releases, such that the only way
1815 a registered ENGINE could be used (assuming it initialises
1816 successfully on the host) was to explicitly set it as the default
1817 for the relevant algorithms. This is in contradiction with 0.9.7
1818 behaviour and the documentation. With this fix, when an ENGINE is
1819 registered into a given algorithm's table of implementations, the
1820 'uptodate' flag is reset so that auto-discovery will be used next
1821 time a new context for that algorithm attempts to select an
1823 [Ian Lister (tweaked by Geoff Thorpe)]
1825 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1826 implemention in the following ways:
1828 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1831 Lack of BER streaming support means one pass streaming processing is
1832 only supported if data is detached: setting the streaming flag is
1833 ignored for embedded content.
1835 CMS support is disabled by default and must be explicitly enabled
1836 with the enable-cms configuration option.
1839 *) Update the GMP engine glue to do direct copies between BIGNUM and
1840 mpz_t when openssl and GMP use the same limb size. Otherwise the
1841 existing "conversion via a text string export" trick is still used.
1842 [Paul Sheer <paulsheer@gmail.com>]
1844 *) Zlib compression BIO. This is a filter BIO which compressed and
1845 uncompresses any data passed through it.
1848 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1849 RFC3394 compatible AES key wrapping.
1852 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1853 sets string data without copying. X509_ALGOR_set0() and
1854 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1855 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1856 from an X509_ATTRIBUTE structure optionally checking it occurs only
1857 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1861 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1862 to get the expected BN_FLG_CONSTTIME behavior.
1863 [Bodo Moeller (Google)]
1867 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1868 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1869 - added some more tests to do_tests.pl
1870 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1871 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1872 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1873 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1874 - various changes to netware.pl to enable gcc-cross builds on Win32
1876 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1877 - various changes to fix missing prototype warnings
1878 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1879 - added AES, WHIRLPOOL and CPUID assembler code to build files
1880 - added missing AES assembler make rules to mk1mf.pl
1881 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1882 [Guenter Knauf <eflash@gmx.net>]
1884 *) Implement certificate status request TLS extension defined in RFC3546.
1885 A client can set the appropriate parameters and receive the encoded
1886 OCSP response via a callback. A server can query the supplied parameters
1887 and set the encoded OCSP response in the callback. Add simplified examples
1888 to s_client and s_server.
1891 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1893 *) Fix various bugs:
1894 + Binary incompatibility of ssl_ctx_st structure
1895 + DTLS interoperation with non-compliant servers
1896 + Don't call get_session_cb() without proposed session
1897 + Fix ia64 assembler code
1898 [Andy Polyakov, Steve Henson]
1900 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1902 *) DTLS Handshake overhaul. There were longstanding issues with
1903 OpenSSL DTLS implementation, which were making it impossible for
1904 RFC 4347 compliant client to communicate with OpenSSL server.
1905 Unfortunately just fixing these incompatibilities would "cut off"
1906 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1907 server keeps tolerating non RFC compliant syntax. The opposite is
1908 not true, 0.9.8f client can not communicate with earlier server.
1909 This update even addresses CVE-2007-4995.
1912 *) Changes to avoid need for function casts in OpenSSL: some compilers
1913 (gcc 4.2 and later) reject their use.
1914 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1917 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1918 RFC4507bis. The encrypted ticket format is an encrypted encoded
1919 SSL_SESSION structure, that way new session features are automatically
1922 If a client application caches session in an SSL_SESSION structure
1923 support is transparent because tickets are now stored in the encoded
1926 The SSL_CTX structure automatically generates keys for ticket
1927 protection in servers so again support should be possible
1928 with no application modification.
1930 If a client or server wishes to disable RFC4507 support then the option
1931 SSL_OP_NO_TICKET can be set.
1933 Add a TLS extension debugging callback to allow the contents of any client
1934 or server extensions to be examined.
1936 This work was sponsored by Google.
1939 *) Add initial support for TLS extensions, specifically for the server_name
1940 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1941 have new members for a host name. The SSL data structure has an
1942 additional member SSL_CTX *initial_ctx so that new sessions can be
1943 stored in that context to allow for session resumption, even after the
1944 SSL has been switched to a new SSL_CTX in reaction to a client's
1945 server_name extension.
1947 New functions (subject to change):
1949 SSL_get_servername()
1950 SSL_get_servername_type()
1953 New CTRL codes and macros (subject to change):
1955 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1956 - SSL_CTX_set_tlsext_servername_callback()
1957 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1958 - SSL_CTX_set_tlsext_servername_arg()
1959 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1961 openssl s_client has a new '-servername ...' option.
1963 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1964 '-key2 ...', '-servername_fatal' (subject to change). This allows
1965 testing the HostName extension for a specific single host name ('-cert'
1966 and '-key' remain fallbacks for handshakes without HostName
1967 negotiation). If the unrecogninzed_name alert has to be sent, this by
1968 default is a warning; it becomes fatal with the '-servername_fatal'
1971 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1973 *) Add AES and SSE2 assembly language support to VC++ build.
1976 *) Mitigate attack on final subtraction in Montgomery reduction.
1979 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1980 (which previously caused an internal error).
1983 *) Squeeze another 10% out of IGE mode when in != out.
1986 *) AES IGE mode speedup.
1987 [Dean Gaudet (Google)]
1989 *) Add the Korean symmetric 128-bit cipher SEED (see
1990 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1991 add SEED ciphersuites from RFC 4162:
1993 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1994 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1995 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1996 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1998 To minimize changes between patchlevels in the OpenSSL 0.9.8
1999 series, SEED remains excluded from compilation unless OpenSSL
2000 is configured with 'enable-seed'.
2001 [KISA, Bodo Moeller]
2003 *) Mitigate branch prediction attacks, which can be practical if a
2004 single processor is shared, allowing a spy process to extract
2005 information. For detailed background information, see
2006 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2007 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2008 and Necessary Software Countermeasures"). The core of the change
2009 are new versions BN_div_no_branch() and
2010 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2011 respectively, which are slower, but avoid the security-relevant
2012 conditional branches. These are automatically called by BN_div()
2013 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2014 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2015 remove a conditional branch.
2017 BN_FLG_CONSTTIME is the new name for the previous
2018 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2019 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2020 in the exponent causes BN_mod_exp_mont() to use the alternative
2021 implementation in BN_mod_exp_mont_consttime().) The old name
2022 remains as a deprecated alias.
2024 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2025 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2026 constant-time implementations for more than just exponentiation.
2027 Here too the old name is kept as a deprecated alias.
2029 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2030 the BN_BLINDING structure gets an independent copy of the
2031 modulus. This means that the previous "BIGNUM *m" argument to
2032 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2033 essentially becomes "const BIGNUM *m", although we can't actually
2034 change this in the header file before 0.9.9. It allows
2035 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2036 enable BN_FLG_CONSTTIME.
2038 [Matthew D Wood (Intel Corp)]
2040 *) In the SSL/TLS server implementation, be strict about session ID
2041 context matching (which matters if an application uses a single
2042 external cache for different purposes). Previously,
2043 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2044 set. This did ensure strict client verification, but meant that,
2045 with applications using a single external cache for quite
2046 different requirements, clients could circumvent ciphersuite
2047 restrictions for a given session ID context by starting a session
2048 in a different context.
2051 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2052 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2053 authentication-only ciphersuites.
2056 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2057 not complete and could lead to a possible single byte overflow
2058 (CVE-2007-5135) [Ben Laurie]
2060 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2062 *) Since AES128 and AES256 (and similarly Camellia128 and
2063 Camellia256) share a single mask bit in the logic of
2064 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2065 kludge to work properly if AES128 is available and AES256 isn't
2066 (or if Camellia128 is available and Camellia256 isn't).
2069 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2070 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2071 When a point or a seed is encoded in a BIT STRING, we need to
2072 prevent the removal of trailing zero bits to get the proper DER
2073 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2074 of a NamedBitList, for which trailing 0 bits need to be removed.)
2077 *) Have SSL/TLS server implementation tolerate "mismatched" record
2078 protocol version while receiving ClientHello even if the
2079 ClientHello is fragmented. (The server can't insist on the
2080 particular protocol version it has chosen before the ServerHello
2081 message has informed the client about his choice.)
2084 *) Add RFC 3779 support.
2085 [Rob Austein for ARIN, Ben Laurie]
2087 *) Load error codes if they are not already present instead of using a
2088 static variable. This allows them to be cleanly unloaded and reloaded.
2089 Improve header file function name parsing.
2092 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2093 or CAPABILITY handshake as required by RFCs.
2096 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2098 *) Introduce limits to prevent malicious keys being able to
2099 cause a denial of service. (CVE-2006-2940)
2100 [Steve Henson, Bodo Moeller]
2102 *) Fix ASN.1 parsing of certain invalid structures that can result
2103 in a denial of service. (CVE-2006-2937) [Steve Henson]
2105 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2106 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2108 *) Fix SSL client code which could crash if connecting to a
2109 malicious SSLv2 server. (CVE-2006-4343)
2110 [Tavis Ormandy and Will Drewry, Google Security Team]
2112 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2113 match only those. Before that, "AES256-SHA" would be interpreted
2114 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2115 the same strength classification in 0.9.7h) as we currently only
2116 have a single AES bit in the ciphersuite description bitmap.
2117 That change, however, also applied to ciphersuite strings such as
2118 "RC4-MD5" that intentionally matched multiple ciphersuites --
2119 namely, SSL 2.0 ciphersuites in addition to the more common ones
2120 from SSL 3.0/TLS 1.0.
2122 So we change the selection algorithm again: Naming an explicit
2123 ciphersuite selects this one ciphersuite, and any other similar
2124 ciphersuite (same bitmap) from *other* protocol versions.
2125 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2126 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2128 Since SSL 2.0 does not have any ciphersuites for which the
2129 128/256 bit distinction would be relevant, this works for now.
2130 The proper fix will be to use different bits for AES128 and
2131 AES256, which would have avoided the problems from the beginning;
2132 however, bits are scarce, so we can only do this in a new release
2133 (not just a patchlevel) when we can change the SSL_CIPHER
2134 definition to split the single 'unsigned long mask' bitmap into
2135 multiple values to extend the available space.
2139 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2141 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2142 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2144 *) Add AES IGE and biIGE modes.
2147 *) Change the Unix randomness entropy gathering to use poll() when
2148 possible instead of select(), since the latter has some
2149 undesirable limitations.
2150 [Darryl Miles via Richard Levitte and Bodo Moeller]
2152 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2153 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2154 cannot be implicitly activated as part of, e.g., the "AES" alias.
2155 However, please upgrade to OpenSSL 0.9.9[-dev] for
2156 non-experimental use of the ECC ciphersuites to get TLS extension
2157 support, which is required for curve and point format negotiation
2158 to avoid potential handshake problems.
2161 *) Disable rogue ciphersuites:
2163 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2164 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2165 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2167 The latter two were purportedly from
2168 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2171 Also deactivate the remaining ciphersuites from
2172 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2173 unofficial, and the ID has long expired.
2176 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2177 dual-core machines) and other potential thread-safety issues.
2180 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2181 versions), which is now available for royalty-free use
2182 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2183 Also, add Camellia TLS ciphersuites from RFC 4132.
2185 To minimize changes between patchlevels in the OpenSSL 0.9.8
2186 series, Camellia remains excluded from compilation unless OpenSSL
2187 is configured with 'enable-camellia'.
2190 *) Disable the padding bug check when compression is in use. The padding
2191 bug check assumes the first packet is of even length, this is not
2192 necessarily true if compresssion is enabled and can result in false
2193 positives causing handshake failure. The actual bug test is ancient
2194 code so it is hoped that implementations will either have fixed it by
2195 now or any which still have the bug do not support compression.
2198 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2200 *) When applying a cipher rule check to see if string match is an explicit
2201 cipher suite and only match that one cipher suite if it is.
2204 *) Link in manifests for VC++ if needed.
2205 [Austin Ziegler <halostatue@gmail.com>]
2207 *) Update support for ECC-based TLS ciphersuites according to
2208 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2209 TLS extensions, which are supported starting with the 0.9.9
2210 branch, not in the OpenSSL 0.9.8 branch).
2213 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2214 opaque EVP_CIPHER_CTX handling.
2217 *) Fixes and enhancements to zlib compression code. We now only use
2218 "zlib1.dll" and use the default __cdecl calling convention on Win32
2219 to conform with the standards mentioned here:
2220 http://www.zlib.net/DLL_FAQ.txt
2221 Static zlib linking now works on Windows and the new --with-zlib-include
2222 --with-zlib-lib options to Configure can be used to supply the location
2223 of the headers and library. Gracefully handle case where zlib library
2227 *) Several fixes and enhancements to the OID generation code. The old code
2228 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2229 handle numbers larger than ULONG_MAX, truncated printing and had a
2230 non standard OBJ_obj2txt() behaviour.
2233 *) Add support for building of engines under engine/ as shared libraries
2234 under VC++ build system.
2237 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2238 Hopefully, we will not see any false combination of paths any more.
2241 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2243 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2244 (part of SSL_OP_ALL). This option used to disable the
2245 countermeasure against man-in-the-middle protocol-version
2246 rollback in the SSL 2.0 server implementation, which is a bad
2247 idea. (CVE-2005-2969)
2249 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2250 for Information Security, National Institute of Advanced Industrial
2251 Science and Technology [AIST], Japan)]
2253 *) Add two function to clear and return the verify parameter flags.
2256 *) Keep cipherlists sorted in the source instead of sorting them at
2257 runtime, thus removing the need for a lock.
2260 *) Avoid some small subgroup attacks in Diffie-Hellman.
2261 [Nick Mathewson and Ben Laurie]
2263 *) Add functions for well-known primes.
2266 *) Extended Windows CE support.
2267 [Satoshi Nakamura and Andy Polyakov]
2269 *) Initialize SSL_METHOD structures at compile time instead of during
2270 runtime, thus removing the need for a lock.
2273 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2274 attempting to decrypt each encrypted key in turn. Add support to
2278 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2280 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2283 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2286 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2287 key into the same file any more.
2290 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2293 *) Add -utf8 command line and config file option to 'ca'.
2294 [Stefan <stf@udoma.org]
2296 *) Removed the macro des_crypt(), as it seems to conflict with some
2297 libraries. Use DES_crypt().
2300 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2301 involves renaming the source and generated shared-libs for
2302 both. The engines will accept the corrected or legacy ids
2303 ('ncipher' and '4758_cca' respectively) when binding. NB,
2304 this only applies when building 'shared'.
2305 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2307 *) Add attribute functions to EVP_PKEY structure. Modify
2308 PKCS12_create() to recognize a CSP name attribute and
2309 use it. Make -CSP option work again in pkcs12 utility.
2312 *) Add new functionality to the bn blinding code:
2313 - automatic re-creation of the BN_BLINDING parameters after
2314 a fixed number of uses (currently 32)
2315 - add new function for parameter creation
2316 - introduce flags to control the update behaviour of the
2317 BN_BLINDING parameters
2318 - hide BN_BLINDING structure
2319 Add a second BN_BLINDING slot to the RSA structure to improve
2320 performance when a single RSA object is shared among several
2324 *) Add support for DTLS.
2325 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2327 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2328 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2331 *) Remove buggy and incompletet DH cert support from
2332 ssl/ssl_rsa.c and ssl/s3_both.c
2335 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2336 the apps/openssl applications.
2339 *) Compile clean with "-Wall -Wmissing-prototypes
2340 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2341 DEBUG_SAFESTACK must also be set.
2344 *) Change ./Configure so that certain algorithms can be disabled by default.
2345 The new counterpiece to "no-xxx" is "enable-xxx".
2347 The patented RC5 and MDC2 algorithms will now be disabled unless
2348 "enable-rc5" and "enable-mdc2", respectively, are specified.
2350 (IDEA remains enabled despite being patented. This is because IDEA
2351 is frequently required for interoperability, and there is no license
2352 fee for non-commercial use. As before, "no-idea" can be used to
2353 avoid this algorithm.)
2357 *) Add processing of proxy certificates (see RFC 3820). This work was
2358 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2359 EGEE (Enabling Grids for E-science in Europe).
2362 *) RC4 performance overhaul on modern architectures/implementations, such
2363 as Intel P4, IA-64 and AMD64.
2366 *) New utility extract-section.pl. This can be used specify an alternative
2367 section number in a pod file instead of having to treat each file as
2368 a separate case in Makefile. This can be done by adding two lines to the
2371 =for comment openssl_section:XXX
2373 The blank line is mandatory.
2377 *) New arguments -certform, -keyform and -pass for s_client and s_server
2378 to allow alternative format key and certificate files and passphrase
2382 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2383 update associated structures and add various utility functions.
2385 Add new policy related verify parameters, include policy checking in
2386 standard verify code. Enhance 'smime' application with extra parameters
2387 to support policy checking and print out.
2390 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2391 Nehemiah processors. These extensions support AES encryption in hardware
2392 as well as RNG (though RNG support is currently disabled).
2393 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2395 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2398 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2399 [Andy Polyakov and a number of other people]
2401 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2402 implementation contributed by IBM.
2403 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2405 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2406 exponent rather than 'unsigned long'. There is a corresponding change to
2407 the new 'rsa_keygen' element of the RSA_METHOD structure.
2408 [Jelte Jansen, Geoff Thorpe]
2410 *) Functionality for creating the initial serial number file is now
2411 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2413 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2414 number file to 1, which is bound to cause problems. To avoid
2415 the problems while respecting compatibility between different 0.9.7
2416 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2417 CA.pl for serial number initialization. With the new release 0.9.8,
2418 we can fix the problem directly in the 'ca' utility.)
2421 *) Reduced header interdepencies by declaring more opaque objects in
2422 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2423 give fewer recursive includes, which could break lazy source code - so
2424 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2425 developers should define this symbol when building and using openssl to
2426 ensure they track the recommended behaviour, interfaces, [etc], but
2427 backwards-compatible behaviour prevails when this isn't defined.
2430 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2433 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2434 This will generate a random key of the appropriate length based on the
2435 cipher context. The EVP_CIPHER can provide its own random key generation
2436 routine to support keys of a specific form. This is used in the des and
2437 3des routines to generate a key of the correct parity. Update S/MIME
2438 code to use new functions and hence generate correct parity DES keys.
2439 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2440 valid (weak or incorrect parity).
2443 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2444 as looking them up. This is useful when the verified structure may contain
2445 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2446 present unless the new PKCS7_NO_CRL flag is asserted.
2449 *) Extend ASN1 oid configuration module. It now additionally accepts the
2452 shortName = some long name, 1.2.3.4
2455 *) Reimplemented the BN_CTX implementation. There is now no more static
2456 limitation on the number of variables it can handle nor the depth of the
2457 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2458 information can now expand as required, and rather than having a single
2459 static array of bignums, BN_CTX now uses a linked-list of such arrays
2460 allowing it to expand on demand whilst maintaining the usefulness of
2461 BN_CTX's "bundling".
2464 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2465 to allow all RSA operations to function using a single BN_CTX.
2468 *) Preliminary support for certificate policy evaluation and checking. This
2469 is initially intended to pass the tests outlined in "Conformance Testing
2470 of Relying Party Client Certificate Path Processing Logic" v1.07.
2473 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2474 remained unused and not that useful. A variety of other little bignum
2475 tweaks and fixes have also been made continuing on from the audit (see
2479 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2480 associated ASN1, EVP and SSL functions and old ASN1 macros.
2483 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2484 and this should never fail. So the return value from the use of
2485 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2486 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2489 *) BN_CTX_get() should return zero-valued bignums, providing the same
2490 initialised value as BN_new().
2491 [Geoff Thorpe, suggested by Ulf Möller]
2493 *) Support for inhibitAnyPolicy certificate extension.
2496 *) An audit of the BIGNUM code is underway, for which debugging code is
2497 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2498 is considered valid when processing BIGNUMs, and causes execution to
2499 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2500 further steps are taken to deliberately pollute unused data in BIGNUM
2501 structures to try and expose faulty code further on. For now, openssl will
2502 (in its default mode of operation) continue to tolerate the inconsistent
2503 forms that it has tolerated in the past, but authors and packagers should
2504 consider trying openssl and their own applications when compiled with
2505 these debugging symbols defined. It will help highlight potential bugs in
2506 their own code, and will improve the test coverage for OpenSSL itself. At
2507 some point, these tighter rules will become openssl's default to improve
2508 maintainability, though the assert()s and other overheads will remain only
2509 in debugging configurations. See bn.h for more details.
2510 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2512 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2513 that can only be obtained through BN_CTX_new() (which implicitly
2514 initialises it). The presence of this function only made it possible
2515 to overwrite an existing structure (and cause memory leaks).
2518 *) Because of the callback-based approach for implementing LHASH as a
2519 template type, lh_insert() adds opaque objects to hash-tables and
2520 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2521 to clean up those corresponding objects before destroying the hash table
2522 (and losing the object pointers). So some over-zealous constifications in
2523 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2524 objects as "const" and the lh_doall[_arg] callback wrappers are not
2525 prototyped to have "const" restrictions on the object pointers they are
2526 given (and so aren't required to cast them away any more).
2529 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2530 (speed) prefers to use its own implementation. The two implementations
2531 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2532 its object type properly exposed (MS_TM) instead of casting to/from "char
2533 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2534 aren't necessarily the greatest nomenclatures - but this is what was used
2535 internally to the implementation so I've used that for now.
2538 *) Ensure that deprecated functions do not get compiled when
2539 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2540 the self-tests were still using deprecated key-generation functions so
2541 these have been updated also.
2544 *) Reorganise PKCS#7 code to separate the digest location functionality
2545 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2546 New function PKCS7_set_digest() to set the digest type for PKCS#7
2547 digestedData type. Add additional code to correctly generate the
2548 digestedData type and add support for this type in PKCS7 initialization
2552 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2553 structure of type "other".
2556 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2557 sure the loop does correctly stop and breaking ("division by zero")
2558 modulus operations are not performed. The (pre-generated) prime
2559 table crypto/bn/bn_prime.h was already correct, but it could not be
2560 re-generated on some platforms because of the "division by zero"
2561 situation in the script.
2562 [Ralf S. Engelschall]
2564 *) Update support for ECC-based TLS ciphersuites according to
2565 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2566 SHA-1 now is only used for "small" curves (where the
2567 representation of a field element takes up to 24 bytes); for
2568 larger curves, the field element resulting from ECDH is directly
2569 used as premaster secret.
2570 [Douglas Stebila (Sun Microsystems Laboratories)]
2572 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2573 curve secp160r1 to the tests.
2574 [Douglas Stebila (Sun Microsystems Laboratories)]
2576 *) Add the possibility to load symbols globally with DSO.
2577 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2579 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2580 control of the error stack.
2583 *) Add support for STORE in ENGINE.
2586 *) Add the STORE type. The intention is to provide a common interface
2587 to certificate and key stores, be they simple file-based stores, or
2588 HSM-type store, or LDAP stores, or...
2589 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2592 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2593 pass a list of arguments to any function as well as provide a way
2594 for a function to pass data back to the caller.
2597 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2598 works like BUF_strdup() but can be used to duplicate a portion of
2599 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2603 *) Add the function sk_find_ex() which works like sk_find(), but will
2604 return an index to an element even if an exact match couldn't be
2605 found. The index is guaranteed to point at the element where the
2606 searched-for key would be inserted to preserve sorting order.
2609 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2610 takes an extra flags argument for optional functionality. Currently,
2611 the following flags are defined:
2613 OBJ_BSEARCH_VALUE_ON_NOMATCH
2614 This one gets OBJ_bsearch_ex() to return a pointer to the first
2615 element where the comparing function returns a negative or zero
2618 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2619 This one gets OBJ_bsearch_ex() to return a pointer to the first
2620 element where the comparing function returns zero. This is useful
2621 if there are more than one element where the comparing function
2625 *) Make it possible to create self-signed certificates with 'openssl ca'
2626 in such a way that the self-signed certificate becomes part of the
2627 CA database and uses the same mechanisms for serial number generation
2628 as all other certificate signing. The new flag '-selfsign' enables
2629 this functionality. Adapt CA.sh and CA.pl.in.
2632 *) Add functionality to check the public key of a certificate request
2633 against a given private. This is useful to check that a certificate
2634 request can be signed by that key (self-signing).
2637 *) Make it possible to have multiple active certificates with the same
2638 subject in the CA index file. This is done only if the keyword
2639 'unique_subject' is set to 'no' in the main CA section (default
2640 if 'CA_default') of the configuration file. The value is saved
2641 with the database itself in a separate index attribute file,
2642 named like the index file with '.attr' appended to the name.
2645 *) Generate muti valued AVAs using '+' notation in config files for
2649 *) Support for nameConstraints certificate extension.
2652 *) Support for policyConstraints certificate extension.
2655 *) Support for policyMappings certificate extension.
2658 *) Make sure the default DSA_METHOD implementation only uses its
2659 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2660 and change its own handlers to be NULL so as to remove unnecessary
2661 indirection. This lets alternative implementations fallback to the
2662 default implementation more easily.
2665 *) Support for directoryName in GeneralName related extensions
2669 *) Make it possible to link applications using Makefile.shared.
2670 Make that possible even when linking against static libraries!
2673 *) Support for single pass processing for S/MIME signing. This now
2674 means that S/MIME signing can be done from a pipe, in addition
2675 cleartext signing (multipart/signed type) is effectively streaming
2676 and the signed data does not need to be all held in memory.
2678 This is done with a new flag PKCS7_STREAM. When this flag is set
2679 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2680 is done after the data is output (and digests calculated) in
2681 SMIME_write_PKCS7().
2684 *) Add full support for -rpath/-R, both in shared libraries and
2685 applications, at least on the platforms where it's known how
2689 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2690 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2691 will now compute a table of multiples of the generator that
2692 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2693 faster (notably in the case of a single point multiplication,
2694 scalar * generator).
2695 [Nils Larsch, Bodo Moeller]
2697 *) IPv6 support for certificate extensions. The various extensions
2698 which use the IP:a.b.c.d can now take IPv6 addresses using the
2699 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2703 *) Added an ENGINE that implements RSA by performing private key
2704 exponentiations with the GMP library. The conversions to and from
2705 GMP's mpz_t format aren't optimised nor are any montgomery forms
2706 cached, and on x86 it appears OpenSSL's own performance has caught up.
2707 However there are likely to be other architectures where GMP could
2708 provide a boost. This ENGINE is not built in by default, but it can be
2709 specified at Configure time and should be accompanied by the necessary
2710 linker additions, eg;
2711 ./config -DOPENSSL_USE_GMP -lgmp
2714 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2715 testing availability of engines with "-t" - the old behaviour is
2716 produced by increasing the feature's verbosity with "-tt".
2719 *) ECDSA routines: under certain error conditions uninitialized BN objects
2720 could be freed. Solution: make sure initialization is performed early
2721 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2725 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2726 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2727 software implementations. For DSA and DH, parameter generation can
2728 also be overriden by providing the appropriate method callbacks.
2731 *) Change the "progress" mechanism used in key-generation and
2732 primality testing to functions that take a new BN_GENCB pointer in
2733 place of callback/argument pairs. The new API functions have "_ex"
2734 postfixes and the older functions are reimplemented as wrappers for
2735 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2736 declarations of the old functions to help (graceful) attempts to
2737 migrate to the new functions. Also, the new key-generation API
2738 functions operate on a caller-supplied key-structure and return
2739 success/failure rather than returning a key or NULL - this is to
2740 help make "keygen" another member function of RSA_METHOD etc.
2742 Example for using the new callback interface:
2744 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2748 BN_GENCB_set(&my_cb, my_callback, my_arg);
2750 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2751 /* For the meaning of a, b in calls to my_callback(), see the
2752 * documentation of the function that calls the callback.
2753 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2754 * my_callback should return 1 if it wants BN_is_prime_ex()
2755 * to continue, or 0 to stop.
2760 *) Change the ZLIB compression method to be stateful, and make it
2761 available to TLS with the number defined in
2762 draft-ietf-tls-compression-04.txt.
2765 *) Add the ASN.1 structures and functions for CertificatePair, which
2766 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2768 CertificatePair ::= SEQUENCE {
2769 forward [0] Certificate OPTIONAL,
2770 reverse [1] Certificate OPTIONAL,
2771 -- at least one of the pair shall be present -- }
2773 Also implement the PEM functions to read and write certificate
2774 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2776 This needed to be defined, mostly for the sake of the LDAP
2777 attribute crossCertificatePair, but may prove useful elsewhere as
2781 *) Make it possible to inhibit symlinking of shared libraries in
2782 Makefile.shared, for Cygwin's sake.
2785 *) Extend the BIGNUM API by creating a function
2786 void BN_set_negative(BIGNUM *a, int neg);
2787 and a macro that behave like
2788 int BN_is_negative(const BIGNUM *a);
2790 to avoid the need to access 'a->neg' directly in applications.
2793 *) Implement fast modular reduction for pseudo-Mersenne primes
2794 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2795 EC_GROUP_new_curve_GFp() will now automatically use this
2797 [Nils Larsch <nla@trustcenter.de>]
2799 *) Add new lock type (CRYPTO_LOCK_BN).
2802 *) Change the ENGINE framework to automatically load engines
2803 dynamically from specific directories unless they could be
2804 found to already be built in or loaded. Move all the
2805 current engines except for the cryptodev one to a new
2807 The engines in engines/ are built as shared libraries if
2808 the "shared" options was given to ./Configure or ./config.
2809 Otherwise, they are inserted in libcrypto.a.
2810 /usr/local/ssl/engines is the default directory for dynamic
2811 engines, but that can be overriden at configure time through
2812 the usual use of --prefix and/or --openssldir, and at run
2813 time with the environment variable OPENSSL_ENGINES.
2814 [Geoff Thorpe and Richard Levitte]
2816 *) Add Makefile.shared, a helper makefile to build shared
2817 libraries. Addapt Makefile.org.
2820 *) Add version info to Win32 DLLs.
2821 [Peter 'Luna' Runestig" <peter@runestig.com>]
2823 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2824 can be added using this API to created arbitrary PKCS#12
2825 files while avoiding the low level API.
2827 New options to PKCS12_create(), key or cert can be NULL and
2828 will then be omitted from the output file. The encryption
2829 algorithm NIDs can be set to -1 for no encryption, the mac
2830 iteration count can be set to 0 to omit the mac.
2832 Enhance pkcs12 utility by making the -nokeys and -nocerts
2833 options work when creating a PKCS#12 file. New option -nomac
2834 to omit the mac, NONE can be set for an encryption algorithm.
2835 New code is modified to use the enhanced PKCS12_create()
2836 instead of the low level API.
2839 *) Extend ASN1 encoder to support indefinite length constructed
2840 encoding. This can output sequences tags and octet strings in
2841 this form. Modify pk7_asn1.c to support indefinite length
2842 encoding. This is experimental and needs additional code to
2843 be useful, such as an ASN1 bio and some enhanced streaming
2846 Extend template encode functionality so that tagging is passed
2847 down to the template encoder.
2850 *) Let 'openssl req' fail if an argument to '-newkey' is not
2851 recognized instead of using RSA as a default.
2854 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2855 As these are not official, they are not included in "ALL";
2856 the "ECCdraft" ciphersuite group alias can be used to select them.
2857 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2859 *) Add ECDH engine support.
2860 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2862 *) Add ECDH in new directory crypto/ecdh/.
2863 [Douglas Stebila (Sun Microsystems Laboratories)]
2865 *) Let BN_rand_range() abort with an error after 100 iterations
2866 without success (which indicates a broken PRNG).
2869 *) Change BN_mod_sqrt() so that it verifies that the input value
2870 is really the square of the return value. (Previously,
2871 BN_mod_sqrt would show GIGO behaviour.)
2874 *) Add named elliptic curves over binary fields from X9.62, SECG,
2875 and WAP/WTLS; add OIDs that were still missing.
2877 [Sheueling Chang Shantz and Douglas Stebila
2878 (Sun Microsystems Laboratories)]
2880 *) Extend the EC library for elliptic curves over binary fields
2881 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2884 EC_GF2m_simple_method
2888 EC_GROUP_new_curve_GF2m
2889 EC_GROUP_set_curve_GF2m
2890 EC_GROUP_get_curve_GF2m
2891 EC_POINT_set_affine_coordinates_GF2m
2892 EC_POINT_get_affine_coordinates_GF2m
2893 EC_POINT_set_compressed_coordinates_GF2m
2895 Point compression for binary fields is disabled by default for
2896 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2899 As binary polynomials are represented as BIGNUMs, various members
2900 of the EC_GROUP and EC_POINT data structures can be shared
2901 between the implementations for prime fields and binary fields;
2902 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2903 are essentially identical to their ..._GFp counterparts.
2904 (For simplicity, the '..._GFp' prefix has been dropped from
2905 various internal method names.)
2907 An internal 'field_div' method (similar to 'field_mul' and
2908 'field_sqr') has been added; this is used only for binary fields.
2910 [Sheueling Chang Shantz and Douglas Stebila
2911 (Sun Microsystems Laboratories)]
2913 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2914 through methods ('mul', 'precompute_mult').
2916 The generic implementations (now internally called 'ec_wNAF_mul'
2917 and 'ec_wNAF_precomputed_mult') remain the default if these
2918 methods are undefined.
2920 [Sheueling Chang Shantz and Douglas Stebila
2921 (Sun Microsystems Laboratories)]
2923 *) New function EC_GROUP_get_degree, which is defined through
2924 EC_METHOD. For curves over prime fields, this returns the bit
2925 length of the modulus.
2927 [Sheueling Chang Shantz and Douglas Stebila
2928 (Sun Microsystems Laboratories)]
2930 *) New functions EC_GROUP_dup, EC_POINT_dup.
2931 (These simply call ..._new and ..._copy).
2933 [Sheueling Chang Shantz and Douglas Stebila
2934 (Sun Microsystems Laboratories)]
2936 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2937 Polynomials are represented as BIGNUMs (where the sign bit is not
2938 used) in the following functions [macros]:
2941 BN_GF2m_sub [= BN_GF2m_add]
2942 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2943 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2944 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2946 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2947 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2948 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2949 BN_GF2m_cmp [= BN_ucmp]
2951 (Note that only the 'mod' functions are actually for fields GF(2^m).
2952 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2954 For some functions, an the irreducible polynomial defining a
2955 field can be given as an 'unsigned int[]' with strictly
2956 decreasing elements giving the indices of those bits that are set;
2957 i.e., p[] represents the polynomial
2958 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2960 p[0] > p[1] > ... > p[k] = 0.
2961 This applies to the following functions:
2966 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2967 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2969 BN_GF2m_mod_sqrt_arr
2970 BN_GF2m_mod_solve_quad_arr
2974 Conversion can be performed by the following functions:
2979 bntest.c has additional tests for binary polynomial arithmetic.
2981 Two implementations for BN_GF2m_mod_div() are available.
2982 The default algorithm simply uses BN_GF2m_mod_inv() and
2983 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2984 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2985 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2987 [Sheueling Chang Shantz and Douglas Stebila
2988 (Sun Microsystems Laboratories)]
2990 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2991 functionality is disabled at compile-time.
2992 [Douglas Stebila <douglas.stebila@sun.com>]
2994 *) Change default behaviour of 'openssl asn1parse' so that more
2995 information is visible when viewing, e.g., a certificate:
2997 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2998 mode the content of non-printable OCTET STRINGs is output in a
2999 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3000 avoid the appearance of a printable string.
3001 [Nils Larsch <nla@trustcenter.de>]
3003 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3005 EC_GROUP_set_asn1_flag()
3006 EC_GROUP_get_asn1_flag()
3007 EC_GROUP_set_point_conversion_form()
3008 EC_GROUP_get_point_conversion_form()
3009 These control ASN1 encoding details:
3010 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3011 has been set to OPENSSL_EC_NAMED_CURVE.
3012 - Points are encoded in uncompressed form by default; options for
3013 asn1_for are as for point2oct, namely
3014 POINT_CONVERSION_COMPRESSED
3015 POINT_CONVERSION_UNCOMPRESSED
3016 POINT_CONVERSION_HYBRID
3018 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3021 EC_GROUP_get0_seed()
3022 EC_GROUP_get_seed_len()
3023 This is used only for ASN1 purposes (so far).
3024 [Nils Larsch <nla@trustcenter.de>]
3026 *) Add 'field_type' member to EC_METHOD, which holds the NID
3027 of the appropriate field type OID. The new function
3028 EC_METHOD_get_field_type() returns this value.
3029 [Nils Larsch <nla@trustcenter.de>]
3034 EC_POINT_point2hex()
3035 EC_POINT_hex2point()
3036 providing useful interfaces to EC_POINT_point2oct() and
3037 EC_POINT_oct2point().
3038 [Nils Larsch <nla@trustcenter.de>]
3040 *) Change internals of the EC library so that the functions
3041 EC_GROUP_set_generator()
3042 EC_GROUP_get_generator()
3043 EC_GROUP_get_order()
3044 EC_GROUP_get_cofactor()
3045 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3046 to methods, which would lead to unnecessary code duplication when
3047 adding different types of curves.
3048 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3050 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3051 arithmetic, and such that modified wNAFs are generated
3052 (which avoid length expansion in many cases).
3055 *) Add a function EC_GROUP_check_discriminant() (defined via
3056 EC_METHOD) that verifies that the curve discriminant is non-zero.
3058 Add a function EC_GROUP_check() that makes some sanity tests
3059 on a EC_GROUP, its generator and order. This includes
3060 EC_GROUP_check_discriminant().
3061 [Nils Larsch <nla@trustcenter.de>]
3063 *) Add ECDSA in new directory crypto/ecdsa/.
3065 Add applications 'openssl ecparam' and 'openssl ecdsa'
3066 (these are based on 'openssl dsaparam' and 'openssl dsa').
3068 ECDSA support is also included in various other files across the
3069 library. Most notably,
3070 - 'openssl req' now has a '-newkey ecdsa:file' option;
3071 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3072 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3073 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3074 them suitable for ECDSA where domain parameters must be
3075 extracted before the specific public key;
3076 - ECDSA engine support has been added.
3077 [Nils Larsch <nla@trustcenter.de>]
3079 *) Include some named elliptic curves, and add OIDs from X9.62,
3080 SECG, and WAP/WTLS. Each curve can be obtained from the new
3082 EC_GROUP_new_by_curve_name(),
3083 and the list of available named curves can be obtained with
3084 EC_get_builtin_curves().
3085 Also add a 'curve_name' member to EC_GROUP objects, which can be
3087 EC_GROUP_set_curve_name()
3088 EC_GROUP_get_curve_name()
3089 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3091 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3092 was actually never needed) and in BN_mul(). The removal in BN_mul()
3093 required a small change in bn_mul_part_recursive() and the addition
3094 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3095 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3096 bn_sub_words() and bn_add_words() except they take arrays with
3100 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3102 *) Cleanse PEM buffers before freeing them since they may contain
3104 [Benjamin Bennett <ben@psc.edu>]
3106 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3107 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3108 authentication-only ciphersuites.
3111 *) Since AES128 and AES256 share a single mask bit in the logic of
3112 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3113 kludge to work properly if AES128 is available and AES256 isn't.
3116 *) Expand security boundary to match 1.1.1 module.
3119 *) Remove redundant features: hash file source, editing of test vectors
3120 modify fipsld to use external fips_premain.c signature.
3123 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3124 run algorithm test programs.
3127 *) Make algorithm test programs more tolerant of whitespace.
3130 *) Have SSL/TLS server implementation tolerate "mismatched" record
3131 protocol version while receiving ClientHello even if the
3132 ClientHello is fragmented. (The server can't insist on the
3133 particular protocol version it has chosen before the ServerHello
3134 message has informed the client about his choice.)
3137 *) Load error codes if they are not already present instead of using a
3138 static variable. This allows them to be cleanly unloaded and reloaded.
3141 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3143 *) Introduce limits to prevent malicious keys being able to
3144 cause a denial of service. (CVE-2006-2940)
3145 [Steve Henson, Bodo Moeller]
3147 *) Fix ASN.1 parsing of certain invalid structures that can result
3148 in a denial of service. (CVE-2006-2937) [Steve Henson]
3150 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3151 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3153 *) Fix SSL client code which could crash if connecting to a
3154 malicious SSLv2 server. (CVE-2006-4343)
3155 [Tavis Ormandy and Will Drewry, Google Security Team]
3157 *) Change ciphersuite string processing so that an explicit
3158 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3159 will no longer include "AES128-SHA"), and any other similar
3160 ciphersuite (same bitmap) from *other* protocol versions (so that
3161 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3162 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3163 changes from 0.9.8b and 0.9.8d.
3166 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3168 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3169 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3171 *) Change the Unix randomness entropy gathering to use poll() when
3172 possible instead of select(), since the latter has some
3173 undesirable limitations.
3174 [Darryl Miles via Richard Levitte and Bodo Moeller]
3176 *) Disable rogue ciphersuites:
3178 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3179 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3180 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3182 The latter two were purportedly from
3183 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3186 Also deactive the remaining ciphersuites from
3187 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3188 unofficial, and the ID has long expired.
3191 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3192 dual-core machines) and other potential thread-safety issues.
3195 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3197 *) Adapt fipsld and the build system to link against the validated FIPS
3198 module in FIPS mode.
3201 *) Fixes for VC++ 2005 build under Windows.
3204 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3205 from a Windows bash shell such as MSYS. It is autodetected from the
3206 "config" script when run from a VC++ environment. Modify standard VC++
3207 build to use fipscanister.o from the GNU make build.
3210 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3212 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3213 The value now differs depending on if you build for FIPS or not.
3214 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3215 safely run with a non-FIPSed libcrypto, as it may crash because of
3216 the difference induced by this change.
3219 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3221 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3222 (part of SSL_OP_ALL). This option used to disable the
3223 countermeasure against man-in-the-middle protocol-version
3224 rollback in the SSL 2.0 server implementation, which is a bad
3225 idea. (CVE-2005-2969)
3227 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3228 for Information Security, National Institute of Advanced Industrial
3229 Science and Technology [AIST], Japan)]
3231 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3232 mainly for FIPS compliance and not fully integrated at this stage.
3235 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3236 the exponentiation using a fixed-length exponent. (Otherwise,
3237 the information leaked through timing could expose the secret key
3238 after many signatures; cf. Bleichenbacher's attack on DSA with
3242 *) Make a new fixed-window mod_exp implementation the default for
3243 RSA, DSA, and DH private-key operations so that the sequence of
3244 squares and multiplies and the memory access pattern are
3245 independent of the particular secret key. This will mitigate
3246 cache-timing and potential related attacks.
3248 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3249 and this is automatically used by BN_mod_exp_mont() if the new flag
3250 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3251 will use this BN flag for private exponents unless the flag
3252 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3253 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3255 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3257 *) Change the client implementation for SSLv23_method() and
3258 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3259 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3260 (Previously, the SSL 2.0 backwards compatible Client Hello
3261 message format would be used even with SSL_OP_NO_SSLv2.)
3264 *) Add support for smime-type MIME parameter in S/MIME messages which some
3268 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3269 a threadsafe manner. Modify rsa code to use new function and add calls
3270 to dsa and dh code (which had race conditions before).
3273 *) Include the fixed error library code in the C error file definitions
3274 instead of fixing them up at runtime. This keeps the error code
3275 structures constant.
3278 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3280 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3283 *) Fixes for newer kerberos headers. NB: the casts are needed because
3284 the 'length' field is signed on one version and unsigned on another
3285 with no (?) obvious way to tell the difference, without these VC++
3286 complains. Also the "definition" of FAR (blank) is no longer included
3287 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3288 some needed definitions.
3291 *) Undo Cygwin change.
3294 *) Added support for proxy certificates according to RFC 3820.
3295 Because they may be a security thread to unaware applications,
3296 they must be explicitely allowed in run-time. See
3297 docs/HOWTO/proxy_certificates.txt for further information.
3300 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3302 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3303 server and client random values. Previously
3304 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3305 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3307 This change has negligible security impact because:
3309 1. Server and client random values still have 24 bytes of pseudo random
3312 2. Server and client random values are sent in the clear in the initial
3315 3. The master secret is derived using the premaster secret (48 bytes in
3316 size for static RSA ciphersuites) as well as client server and random
3319 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3322 [Stephen Henson, reported by UK NISCC]
3324 *) Use Windows randomness collection on Cygwin.
3327 *) Fix hang in EGD/PRNGD query when communication socket is closed
3328 prematurely by EGD/PRNGD.
3329 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3331 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3334 *) Back-port of selected performance improvements from development
3335 branch, as well as improved support for PowerPC platforms.
3338 *) Add lots of checks for memory allocation failure, error codes to indicate
3339 failure and freeing up memory if a failure occurs.
3340 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3342 *) Add new -passin argument to dgst.
3345 *) Perform some character comparisons of different types in X509_NAME_cmp:
3346 this is needed for some certificates that reencode DNs into UTF8Strings
3347 (in violation of RFC3280) and can't or wont issue name rollover
3351 *) Make an explicit check during certificate validation to see that
3352 the CA setting in each certificate on the chain is correct. As a
3353 side effect always do the following basic checks on extensions,
3354 not just when there's an associated purpose to the check:
3356 - if there is an unhandled critical extension (unless the user
3357 has chosen to ignore this fault)
3358 - if the path length has been exceeded (if one is set at all)
3359 - that certain extensions fit the associated purpose (if one has
3363 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3365 *) Avoid a race condition when CRLs are checked in a multi threaded
3366 environment. This would happen due to the reordering of the revoked
3367 entries during signature checking and serial number lookup. Now the
3368 encoding is cached and the serial number sort performed under a lock.
3369 Add new STACK function sk_is_sorted().
3372 *) Add Delta CRL to the extension code.
3375 *) Various fixes to s3_pkt.c so alerts are sent properly.
3376 [David Holmes <d.holmes@f5.com>]
3378 *) Reduce the chances of duplicate issuer name and serial numbers (in
3379 violation of RFC3280) using the OpenSSL certificate creation utilities.
3380 This is done by creating a random 64 bit value for the initial serial
3381 number when a serial number file is created or when a self signed
3382 certificate is created using 'openssl req -x509'. The initial serial
3383 number file is created using 'openssl x509 -next_serial' in CA.pl
3384 rather than being initialized to 1.
3387 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3389 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3390 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3391 [Joe Orton, Steve Henson]
3393 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3395 [Joe Orton, Steve Henson]
3397 *) Make it possible to have multiple active certificates with the same
3398 subject in the CA index file. This is done only if the keyword
3399 'unique_subject' is set to 'no' in the main CA section (default
3400 if 'CA_default') of the configuration file. The value is saved
3401 with the database itself in a separate index attribute file,
3402 named like the index file with '.attr' appended to the name.
3405 *) X509 verify fixes. Disable broken certificate workarounds when
3406 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3407 keyUsage extension present. Don't accept CRLs with unhandled critical
3408 extensions: since verify currently doesn't process CRL extensions this
3409 rejects a CRL with *any* critical extensions. Add new verify error codes
3413 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3414 A clarification of RFC2560 will require the use of OCTET STRINGs and
3415 some implementations cannot handle the current raw format. Since OpenSSL
3416 copies and compares OCSP nonces as opaque blobs without any attempt at
3417 parsing them this should not create any compatibility issues.
3420 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3421 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3422 this HMAC (and other) operations are several times slower than OpenSSL
3426 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3427 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3429 *) Use the correct content when signing type "other".
3432 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3434 *) Fix various bugs revealed by running the NISCC test suite:
3436 Stop out of bounds reads in the ASN1 code when presented with
3437 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3439 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3441 If verify callback ignores invalid public key errors don't try to check
3442 certificate signature with the NULL public key.
3446 *) New -ignore_err option in ocsp application to stop the server
3447 exiting on the first error in a request.
3450 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3451 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3455 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3456 extra data after the compression methods not only for TLS 1.0
3457 but also for SSL 3.0 (as required by the specification).
3458 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3460 *) Change X509_certificate_type() to mark the key as exported/exportable
3461 when it's 512 *bits* long, not 512 bytes.
3464 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3465 blocks during encryption.
3468 *) Various fixes to base64 BIO and non blocking I/O. On write
3469 flushes were not handled properly if the BIO retried. On read
3470 data was not being buffered properly and had various logic bugs.
3471 This also affects blocking I/O when the data being decoded is a
3475 *) Various S/MIME bugfixes and compatibility changes:
3476 output correct application/pkcs7 MIME type if
3477 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3478 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3479 of files as .eml work). Correctly handle very long lines in MIME
3483 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3485 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3486 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3487 a protocol version number mismatch like a decryption error
3488 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3491 *) Turn on RSA blinding by default in the default implementation
3492 to avoid a timing attack. Applications that don't want it can call
3493 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3494 They would be ill-advised to do so in most cases.
3495 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3497 *) Change RSA blinding code so that it works when the PRNG is not
3498 seeded (in this case, the secret RSA exponent is abused as
3499 an unpredictable seed -- if it is not unpredictable, there
3500 is no point in blinding anyway). Make RSA blinding thread-safe
3501 by remembering the creator's thread ID in rsa->blinding and
3502 having all other threads use local one-time blinding factors
3503 (this requires more computation than sharing rsa->blinding, but
3504 avoids excessive locking; and if an RSA object is not shared
3505 between threads, blinding will still be very fast).
3508 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3509 ENGINE as defaults for all supported algorithms irrespective of
3510 the 'flags' parameter. 'flags' is now honoured, so applications
3511 should make sure they are passing it correctly.
3514 *) Target "mingw" now allows native Windows code to be generated in
3515 the Cygwin environment as well as with the MinGW compiler.
3518 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3520 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3521 via timing by performing a MAC computation even if incorrrect
3522 block cipher padding has been found. This is a countermeasure
3523 against active attacks where the attacker has to distinguish
3524 between bad padding and a MAC verification error. (CVE-2003-0078)
3526 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3527 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3528 Martin Vuagnoux (EPFL, Ilion)]
3530 *) Make the no-err option work as intended. The intention with no-err
3531 is not to have the whole error stack handling routines removed from
3532 libcrypto, it's only intended to remove all the function name and
3533 reason texts, thereby removing some of the footprint that may not
3534 be interesting if those errors aren't displayed anyway.
3536 NOTE: it's still possible for any application or module to have it's
3537 own set of error texts inserted. The routines are there, just not
3538 used by default when no-err is given.
3541 *) Add support for FreeBSD on IA64.
3542 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3544 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3545 Kerberos function mit_des_cbc_cksum(). Before this change,
3546 the value returned by DES_cbc_cksum() was like the one from
3547 mit_des_cbc_cksum(), except the bytes were swapped.
3548 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3550 *) Allow an application to disable the automatic SSL chain building.
3551 Before this a rather primitive chain build was always performed in
3552 ssl3_output_cert_chain(): an application had no way to send the
3553 correct chain if the automatic operation produced an incorrect result.
3555 Now the chain builder is disabled if either:
3557 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3559 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3561 The reasoning behind this is that an application would not want the
3562 auto chain building to take place if extra chain certificates are
3563 present and it might also want a means of sending no additional
3564 certificates (for example the chain has two certificates and the
3568 *) Add the possibility to build without the ENGINE framework.
3569 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3571 *) Under Win32 gmtime() can return NULL: check return value in
3572 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3575 *) DSA routines: under certain error conditions uninitialized BN objects
3576 could be freed. Solution: make sure initialization is performed early
3577 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3578 Nils Larsch <nla@trustcenter.de> via PR#459)
3581 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3582 checked on reconnect on the client side, therefore session resumption
3583 could still fail with a "ssl session id is different" error. This
3584 behaviour is masked when SSL_OP_ALL is used due to
3585 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3586 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3587 followup to PR #377.
3590 *) IA-32 assembler support enhancements: unified ELF targets, support
3591 for SCO/Caldera platforms, fix for Cygwin shared build.
3594 *) Add support for FreeBSD on sparc64. As a consequence, support for
3595 FreeBSD on non-x86 processors is separate from x86 processors on
3596 the config script, much like the NetBSD support.
3597 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3599 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3601 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3604 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3605 code (06) was taken as the first octet of the session ID and the last
3606 octet was ignored consequently. As a result SSLv2 client side session
3607 caching could not have worked due to the session ID mismatch between
3609 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3613 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3614 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3618 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3619 seems that in spite of existing for more than a year, many application
3620 author have done nothing to provide the necessary callbacks, which
3621 means that this particular engine will not work properly anywhere.
3622 This is a very unfortunate situation which forces us, in the name
3623 of usability, to give the hw_ncipher.c a static lock, which is part
3625 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3626 appear in 0.9.8 or later. We EXPECT application authors to have
3627 dealt properly with this when 0.9.8 is released (unless we actuall
projects / openssl.git / blob