5 This is a high-level summary of the most important changes.
6 For a full list of changes, see the git commit log; for example,
7 https://github.com/openssl/openssl/commits/ and pick the appropriate
10 Changes between 1.1.1 and 3.0.0 [xx XXX xxxx]
12 *) Switch to a new version scheme using three numbers MAJOR.MINOR.PATCH.
14 o Major releases (indicated by incrementing the MAJOR release number)
15 may introduce incompatible API/ABI changes.
16 o Minor releases (indicated by incrementing the MINOR release number)
17 may introduce new features but retain API/ABI compatibility.
18 o Patch releases (indicated by incrementing the PATCH number)
19 are intended for bug fixes and other improvements of existing
20 features only (like improving performance or adding documentation)
21 and retain API/ABI compatibility.
24 *) Remove the 'dist' target and add a tarball building script. The
25 'dist' target has fallen out of use, and it shouldn't be
26 necessary to configure just to create a source distribution.
29 *) Recreate the OS390-Unix config target. It no longer relies on a
30 special script like it did for OpenSSL pre-1.1.0.
33 *) Instead of having the source directories listed in Configure, add
34 a 'build.info' keyword SUBDIRS to indicate what sub-directories to
38 *) Add GMAC to EVP_MAC.
41 *) Ported the HMAC, CMAC and SipHash EVP_PKEY_METHODs to EVP_MAC.
44 *) Added EVP_MAC, an EVP layer MAC API, to simplify adding MAC
45 implementations. This includes a generic EVP_PKEY to EVP_MAC bridge,
46 to facilitate the continued use of MACs through raw private keys in
47 functionality such as EVP_DigestSign* and EVP_DigestVerify*.
50 *) Deprecate ECDH_KDF_X9_62() and mark its replacement as internal. Users
51 should use the EVP interface instead (EVP_PKEY_CTX_set_ecdh_kdf_type).
54 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for
55 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names
56 are retained for backwards compatibility.
59 *) AES-XTS mode now enforces that its two keys are different to mitigate
60 the attacked described in "Efficient Instantiations of Tweakable
61 Blockciphers and Refinements to Modes OCB and PMAC" by Phillip Rogaway.
62 Details of this attack can be obtained from:
63 http://web.cs.ucdavis.edu/%7Erogaway/papers/offsets.pdf
66 *) Rename the object files, i.e. give them other names than in previous
67 versions. Their names now include the name of the final product, as
68 well as its type mnemonic (bin, lib, shlib).
71 *) Added new option for 'openssl list', '-objects', which will display the
72 list of built in objects, i.e. OIDs with names.
75 Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
77 *) Timing vulnerability in DSA signature generation
79 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
80 timing side channel attack. An attacker could use variations in the signing
81 algorithm to recover the private key.
83 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
87 *) Timing vulnerability in ECDSA signature generation
89 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a
90 timing side channel attack. An attacker could use variations in the signing
91 algorithm to recover the private key.
93 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser.
97 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input
98 if its length exceeds 4096 bytes. The limit has been raised to a buffer size
99 of two gigabytes and the error handling improved.
101 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been
102 categorized as a normal bug, not a security issue, because the DRBG reseeds
103 automatically and is fully functional even without additional randomness
104 provided by the application.
106 Changes between 1.1.0i and 1.1.1 [11 Sep 2018]
108 *) Add a new ClientHello callback. Provides a callback interface that gives
109 the application the ability to adjust the nascent SSL object at the
110 earliest stage of ClientHello processing, immediately after extensions have
111 been collected but before they have been processed. In particular, this
112 callback can adjust the supported TLS versions in response to the contents
116 *) Add SM2 base algorithm support.
119 *) s390x assembly pack: add (improved) hardware-support for the following
120 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb,
121 aes-cfb/cfb8, aes-ecb.
124 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
125 parameter is no longer accepted, as it leads to a corrupt table. NULL
126 pem_str is reserved for alias entries only.
129 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
130 step for prime curves. The new implementation is based on formulae from
131 differential addition-and-doubling in homogeneous projective coordinates
132 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant
133 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves
134 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified
135 to work in projective coordinates.
136 [Billy Bob Brumley, Nicola Tuveri]
138 *) Change generating and checking of primes so that the error rate of not
139 being prime depends on the intended use based on the size of the input.
140 For larger primes this will result in more rounds of Miller-Rabin.
141 The maximal error rate for primes with more than 1080 bits is lowered
143 [Kurt Roeckx, Annie Yousar]
145 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
148 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when
149 moving between systems, and to avoid confusion when a Windows build is
150 done with mingw vs with MSVC. For POSIX installs, there's still a
151 symlink or copy named 'tsget' to avoid that confusion as well.
154 *) Revert blinding in ECDSA sign and instead make problematic addition
155 length-invariant. Switch even to fixed-length Montgomery multiplication.
158 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder
159 step for binary curves. The new implementation is based on formulae from
160 differential addition-and-doubling in mixed Lopez-Dahab projective
161 coordinates, modified to independently blind the operands.
162 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
164 *) Add a scaffold to optionally enhance the Montgomery ladder implementation
165 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing
166 EC_METHODs to implement their own specialized "ladder step", to take
167 advantage of more favorable coordinate systems or more efficient
168 differential addition-and-doubling algorithms.
169 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri]
171 *) Modified the random device based seed sources to keep the relevant
172 file descriptors open rather than reopening them on each access.
173 This allows such sources to operate in a chroot() jail without
174 the associated device nodes being available. This behaviour can be
175 controlled using RAND_keep_random_devices_open().
178 *) Numerous side-channel attack mitigations have been applied. This may have
179 performance impacts for some algorithms for the benefit of improved
180 security. Specific changes are noted in this change log by their respective
184 *) AIX shared library support overhaul. Switch to AIX "natural" way of
185 handling shared libraries, which means collecting shared objects of
186 different versions and bitnesses in one common archive. This allows to
187 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
188 doesn't affect the way 3rd party applications are linked, only how
189 multi-version installation is managed.
192 *) Make ec_group_do_inverse_ord() more robust and available to other
193 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
194 mitigations are applied to the fallback BN_mod_inverse().
195 When using this function rather than BN_mod_inverse() directly, new
196 EC cryptosystem implementations are then safer-by-default.
199 *) Add coordinate blinding for EC_POINT and implement projective
200 coordinate blinding for generic prime curves as a countermeasure to
201 chosen point SCA attacks.
202 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
204 *) Add blinding to ECDSA and DSA signatures to protect against side channel
205 attacks discovered by Keegan Ryan (NCC Group).
208 *) Enforce checking in the pkeyutl command line app to ensure that the input
209 length does not exceed the maximum supported digest length when performing
210 a sign, verify or verifyrecover operation.
213 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
214 I/O in combination with something like select() or poll() will hang. This
215 can be turned off again using SSL_CTX_clear_mode().
216 Many applications do not properly handle non-application data records, and
217 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
218 around the problems in those applications, but can also break some.
219 It's recommended to read the manpages about SSL_read(), SSL_write(),
220 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
221 SSL_CTX_set_read_ahead() again.
224 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
225 now allow empty (zero character) pass phrases.
228 *) Apply blinding to binary field modular inversion and remove patent
229 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
232 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
233 binary and prime elliptic curves.
236 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
237 constant time fixed point multiplication.
240 *) Revise elliptic curve scalar multiplication with timing attack
241 defenses: ec_wNAF_mul redirects to a constant time implementation
242 when computing fixed point and variable point multiplication (which
243 in OpenSSL are mostly used with secret scalars in keygen, sign,
244 ECDH derive operations).
245 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida GarcÃa,
248 *) Updated CONTRIBUTING
251 *) Updated DRBG / RAND to request nonce and additional low entropy
252 randomness from the system.
253 [Matthias St. Pierre]
255 *) Updated 'openssl rehash' to use OpenSSL consistent default.
258 *) Moved the load of the ssl_conf module to libcrypto, which helps
259 loading engines that libssl uses before libssl is initialised.
262 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
265 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
266 [Ingo Schwarze, Rich Salz]
268 *) Added output of accepting IP address and port for 'openssl s_server'
271 *) Added a new API for TLSv1.3 ciphersuites:
272 SSL_CTX_set_ciphersuites()
273 SSL_set_ciphersuites()
276 *) Memory allocation failures consistenly add an error to the error
280 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
281 in libcrypto when run as setuid/setgid.
284 *) Load any config file by default when libssl is used.
287 *) Added new public header file <openssl/rand_drbg.h> and documentation
288 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
289 [Matthias St. Pierre]
291 *) QNX support removed (cannot find contributors to get their approval
292 for the license change).
295 *) TLSv1.3 replay protection for early data has been implemented. See the
296 SSL_read_early_data() man page for further details.
299 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
300 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
301 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
302 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
303 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
304 configuration has been separated out. See the ciphers man page or the
305 SSL_CTX_set_ciphersuites() man page for more information.
308 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
309 in responder mode now supports the new "-multi" option, which
310 spawns the specified number of child processes to handle OCSP
311 requests. The "-timeout" option now also limits the OCSP
312 responder's patience to wait to receive the full client request
313 on a newly accepted connection. Child processes are respawned
314 as needed, and the CA index file is automatically reloaded
315 when changed. This makes it possible to run the "ocsp" responder
316 as a long-running service, making the OpenSSL CA somewhat more
317 feature-complete. In this mode, most diagnostic messages logged
318 after entering the event loop are logged via syslog(3) rather than
322 *) Added support for X448 and Ed448. Heavily based on original work by
326 *) Extend OSSL_STORE with capabilities to search and to narrow the set of
327 objects loaded. This adds the functions OSSL_STORE_expect() and
328 OSSL_STORE_find() as well as needed tools to construct searches and
329 get the search data out of them.
332 *) Support for TLSv1.3 added. Note that users upgrading from an earlier
333 version of OpenSSL should review their configuration settings to ensure
334 that they are still appropriate for TLSv1.3. For further information see:
335 https://wiki.openssl.org/index.php/TLS1.3
338 *) Grand redesign of the OpenSSL random generator
340 The default RAND method now utilizes an AES-CTR DRBG according to
341 NIST standard SP 800-90Ar1. The new random generator is essentially
342 a port of the default random generator from the OpenSSL FIPS 2.0
343 object module. It is a hybrid deterministic random bit generator
344 using an AES-CTR bit stream and which seeds and reseeds itself
345 automatically using trusted system entropy sources.
347 Some of its new features are:
348 o Support for multiple DRBG instances with seed chaining.
349 o The default RAND method makes use of a DRBG.
350 o There is a public and private DRBG instance.
351 o The DRBG instances are fork-safe.
352 o Keep all global DRBG instances on the secure heap if it is enabled.
353 o The public and private DRBG instance are per thread for lock free
355 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
357 *) Changed Configure so it only says what it does and doesn't dump
358 so much data. Instead, ./configdata.pm should be used as a script
359 to display all sorts of configuration data.
362 *) Added processing of "make variables" to Configure.
365 *) Added SHA512/224 and SHA512/256 algorithm support.
368 *) The last traces of Netware support, first removed in 1.1.0, have
372 *) Get rid of Makefile.shared, and in the process, make the processing
373 of certain files (rc.obj, or the .def/.map/.opt files produced from
374 the ordinal files) more visible and hopefully easier to trace and
375 debug (or make silent).
378 *) Make it possible to have environment variable assignments as
379 arguments to config / Configure.
382 *) Add multi-prime RSA (RFC 8017) support.
385 *) Add SM3 implemented according to GB/T 32905-2016
386 [ Jack Lloyd <jack.lloyd@ribose.com>,
387 Ronald Tse <ronald.tse@ribose.com>,
388 Erick Borsboom <erick.borsboom@ribose.com> ]
390 *) Add 'Maximum Fragment Length' TLS extension negotiation and support
391 as documented in RFC6066.
392 Based on a patch from Tomasz Moń
393 [Filipe Raimundo da Silva]
395 *) Add SM4 implemented according to GB/T 32907-2016.
396 [ Jack Lloyd <jack.lloyd@ribose.com>,
397 Ronald Tse <ronald.tse@ribose.com>,
398 Erick Borsboom <erick.borsboom@ribose.com> ]
400 *) Reimplement -newreq-nodes and ERR_error_string_n; the
401 original author does not agree with the license change.
404 *) Add ARIA AEAD TLS support.
407 *) Some macro definitions to support VS6 have been removed. Visual
408 Studio 6 has not worked since 1.1.0
411 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
412 without clearing the errors.
415 *) Add "atfork" functions. If building on a system that without
416 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
417 requirements. The RAND facility now uses/requires this.
423 *) The UI API becomes a permanent and integral part of libcrypto, i.e.
424 not possible to disable entirely. However, it's still possible to
425 disable the console reading UI method, UI_OpenSSL() (use UI_null()
428 To disable, configure with 'no-ui-console'. 'no-ui' is still
429 possible to use as an alias. Check at compile time with the
430 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
431 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
434 *) Add a STORE module, which implements a uniform and URI based reader of
435 stores that can contain keys, certificates, CRLs and numerous other
436 objects. The main API is loosely based on a few stdio functions,
437 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
438 OSSL_STORE_error and OSSL_STORE_close.
439 The implementation uses backends called "loaders" to implement arbitrary
440 URI schemes. There is one built in "loader" for the 'file' scheme.
443 *) Add devcrypto engine. This has been implemented against cryptodev-linux,
444 then adjusted to work on FreeBSD 8.4 as well.
445 Enable by configuring with 'enable-devcryptoeng'. This is done by default
446 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
449 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
450 util/mkerr.pl, which is adapted to allow those prefixes, leading to
451 error code calls like this:
453 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
455 With this change, we claim the namespaces OSSL and OPENSSL in a manner
456 that can be encoded in C. For the foreseeable future, this will only
458 [Richard Levitte and Tim Hudson]
460 *) Removed BSD cryptodev engine.
463 *) Add a build target 'build_all_generated', to build all generated files
464 and only that. This can be used to prepare everything that requires
465 things like perl for a system that lacks perl and then move everything
466 to that system and do the rest of the build there.
469 *) In the UI interface, make it possible to duplicate the user data. This
470 can be used by engines that need to retain the data for a longer time
471 than just the call where this user data is passed.
474 *) Ignore the '-named_curve auto' value for compatibility of applications
476 [Tomas Mraz <tmraz@fedoraproject.org>]
478 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
479 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
480 alerts across multiple records (some of which could be empty). In practice
481 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
482 prohibts this altogether and other libraries (BoringSSL, NSS) do not
483 support this at all. Supporting it adds significant complexity to the
484 record layer, and its removal is unlikely to cause inter-operability
488 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
489 with Z. These are meant to replace LONG and ZLONG and to be size safe.
490 The use of LONG and ZLONG is discouraged and scheduled for deprecation
494 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
495 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
496 [Richard Levitte, Andy Polyakov]
498 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
502 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
503 platform rather than 'mingw'.
506 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
507 success if they are asked to add an object which already exists
508 in the store. This change cascades to other functions which load
509 certificates and CRLs.
512 *) x86_64 assembly pack: annotate code with DWARF CFI directives to
513 facilitate stack unwinding even from assembly subroutines.
516 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
517 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
520 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
521 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
522 which is the minimum version we support.
525 *) Certificate time validation (X509_cmp_time) enforces stricter
526 compliance with RFC 5280. Fractional seconds and timezone offsets
527 are no longer allowed.
530 *) Add support for ARIA
533 *) s_client will now send the Server Name Indication (SNI) extension by
534 default unless the new "-noservername" option is used. The server name is
535 based on the host provided to the "-connect" option unless overridden by
539 *) Add support for SipHash
542 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
543 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
544 prevent issues where no progress is being made and the peer continually
545 sends unrecognised record types, using up resources processing them.
548 *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
549 using the algorithm defined in
550 https://www.akkadia.org/drepper/SHA-crypt.txt
553 *) Heartbeat support has been removed; the ABI is changed for now.
554 [Richard Levitte, Rich Salz]
556 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
559 *) The RSA "null" method, which was partially supported to avoid patent
560 issues, has been replaced to always returns NULL.
564 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
566 *) Client DoS due to large DH parameter
568 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
569 malicious server can send a very large prime value to the client. This will
570 cause the client to spend an unreasonably long period of time generating a
571 key for this prime resulting in a hang until the client has finished. This
572 could be exploited in a Denial Of Service attack.
574 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
578 *) Cache timing vulnerability in RSA Key Generation
580 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
581 a cache timing side channel attack. An attacker with sufficient access to
582 mount cache timing attacks during the RSA key generation process could
583 recover the private key.
585 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
586 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
590 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
591 parameter is no longer accepted, as it leads to a corrupt table. NULL
592 pem_str is reserved for alias entries only.
595 *) Revert blinding in ECDSA sign and instead make problematic addition
596 length-invariant. Switch even to fixed-length Montgomery multiplication.
599 *) Change generating and checking of primes so that the error rate of not
600 being prime depends on the intended use based on the size of the input.
601 For larger primes this will result in more rounds of Miller-Rabin.
602 The maximal error rate for primes with more than 1080 bits is lowered
604 [Kurt Roeckx, Annie Yousar]
606 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
609 *) Add blinding to ECDSA and DSA signatures to protect against side channel
610 attacks discovered by Keegan Ryan (NCC Group).
613 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
614 now allow empty (zero character) pass phrases.
617 *) Certificate time validation (X509_cmp_time) enforces stricter
618 compliance with RFC 5280. Fractional seconds and timezone offsets
619 are no longer allowed.
622 *) Fixed a text canonicalisation bug in CMS
624 Where a CMS detached signature is used with text content the text goes
625 through a canonicalisation process first prior to signing or verifying a
626 signature. This process strips trailing space at the end of lines, converts
627 line terminators to CRLF and removes additional trailing line terminators
628 at the end of a file. A bug in the canonicalisation process meant that
629 some characters, such as form-feed, were incorrectly treated as whitespace
630 and removed. This is contrary to the specification (RFC5485). This fix
631 could mean that detached text data signed with an earlier version of
632 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
633 signed with a fixed OpenSSL may fail to verify with an earlier version of
634 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
635 and use the "-binary" flag (for the "cms" command line application) or set
636 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
639 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
641 *) Constructed ASN.1 types with a recursive definition could exceed the stack
643 Constructed ASN.1 types with a recursive definition (such as can be found
644 in PKCS7) could eventually exceed the stack given malicious input with
645 excessive recursion. This could result in a Denial Of Service attack. There
646 are no such structures used within SSL/TLS that come from untrusted sources
647 so this is considered safe.
649 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
654 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
656 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
657 effectively reduced to only comparing the least significant bit of each
658 byte. This allows an attacker to forge messages that would be considered as
659 authenticated in an amount of tries lower than that guaranteed by the
660 security claims of the scheme. The module can only be compiled by the
661 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
663 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
668 *) Add a build target 'build_all_generated', to build all generated files
669 and only that. This can be used to prepare everything that requires
670 things like perl for a system that lacks perl and then move everything
671 to that system and do the rest of the build there.
674 *) Backport SSL_OP_NO_RENGOTIATION
676 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
677 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
678 changes this is no longer possible in 1.1.0. Therefore the new
679 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
680 1.1.0 to provide equivalent functionality.
682 Note that if an application built against 1.1.0h headers (or above) is run
683 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
684 accepted but nothing will happen, i.e. renegotiation will not be prevented.
687 *) Removed the OS390-Unix config target. It relied on a script that doesn't
691 *) rsaz_1024_mul_avx2 overflow bug on x86_64
693 There is an overflow bug in the AVX2 Montgomery multiplication procedure
694 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
695 Analysis suggests that attacks against RSA and DSA as a result of this
696 defect would be very difficult to perform and are not believed likely.
697 Attacks against DH1024 are considered just feasible, because most of the
698 work necessary to deduce information about a private key may be performed
699 offline. The amount of resources required for such an attack would be
700 significant. However, for an attack on TLS to be meaningful, the server
701 would have to share the DH1024 private key among multiple clients, which is
702 no longer an option since CVE-2016-0701.
704 This only affects processors that support the AVX2 but not ADX extensions
705 like Intel Haswell (4th generation).
707 This issue was reported to OpenSSL by David Benjamin (Google). The issue
708 was originally found via the OSS-Fuzz project.
712 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
714 *) bn_sqrx8x_internal carry bug on x86_64
716 There is a carry propagating bug in the x86_64 Montgomery squaring
717 procedure. No EC algorithms are affected. Analysis suggests that attacks
718 against RSA and DSA as a result of this defect would be very difficult to
719 perform and are not believed likely. Attacks against DH are considered just
720 feasible (although very difficult) because most of the work necessary to
721 deduce information about a private key may be performed offline. The amount
722 of resources required for such an attack would be very significant and
723 likely only accessible to a limited number of attackers. An attacker would
724 additionally need online access to an unpatched system using the target
725 private key in a scenario with persistent DH parameters and a private
726 key that is shared between multiple clients.
728 This only affects processors that support the BMI1, BMI2 and ADX extensions
729 like Intel Broadwell (5th generation) and later or AMD Ryzen.
731 This issue was reported to OpenSSL by the OSS-Fuzz project.
735 *) Malformed X.509 IPAddressFamily could cause OOB read
737 If an X.509 certificate has a malformed IPAddressFamily extension,
738 OpenSSL could do a one-byte buffer overread. The most likely result
739 would be an erroneous display of the certificate in text format.
741 This issue was reported to OpenSSL by the OSS-Fuzz project.
745 Changes between 1.1.0e and 1.1.0f [25 May 2017]
747 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
748 platform rather than 'mingw'.
751 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
752 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
753 which is the minimum version we support.
756 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
758 *) Encrypt-Then-Mac renegotiation crash
760 During a renegotiation handshake if the Encrypt-Then-Mac extension is
761 negotiated where it was not in the original handshake (or vice-versa) then
762 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
763 and servers are affected.
765 This issue was reported to OpenSSL by Joe Orton (Red Hat).
769 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
771 *) Truncated packet could crash via OOB read
773 If one side of an SSL/TLS path is running on a 32-bit host and a specific
774 cipher is being used, then a truncated packet can cause that host to
775 perform an out-of-bounds read, usually resulting in a crash.
777 This issue was reported to OpenSSL by Robert Święcki of Google.
781 *) Bad (EC)DHE parameters cause a client crash
783 If a malicious server supplies bad parameters for a DHE or ECDHE key
784 exchange then this can result in the client attempting to dereference a
785 NULL pointer leading to a client crash. This could be exploited in a Denial
788 This issue was reported to OpenSSL by Guido Vranken.
792 *) BN_mod_exp may produce incorrect results on x86_64
794 There is a carry propagating bug in the x86_64 Montgomery squaring
795 procedure. No EC algorithms are affected. Analysis suggests that attacks
796 against RSA and DSA as a result of this defect would be very difficult to
797 perform and are not believed likely. Attacks against DH are considered just
798 feasible (although very difficult) because most of the work necessary to
799 deduce information about a private key may be performed offline. The amount
800 of resources required for such an attack would be very significant and
801 likely only accessible to a limited number of attackers. An attacker would
802 additionally need online access to an unpatched system using the target
803 private key in a scenario with persistent DH parameters and a private
804 key that is shared between multiple clients. For example this can occur by
805 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
806 similar to CVE-2015-3193 but must be treated as a separate problem.
808 This issue was reported to OpenSSL by the OSS-Fuzz project.
812 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
814 *) ChaCha20/Poly1305 heap-buffer-overflow
816 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
817 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
818 crash. This issue is not considered to be exploitable beyond a DoS.
820 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
824 *) CMS Null dereference
826 Applications parsing invalid CMS structures can crash with a NULL pointer
827 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
828 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
829 structure callback if an attempt is made to free certain invalid encodings.
830 Only CHOICE structures using a callback which do not handle NULL value are
833 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
837 *) Montgomery multiplication may produce incorrect results
839 There is a carry propagating bug in the Broadwell-specific Montgomery
840 multiplication procedure that handles input lengths divisible by, but
841 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
842 and DH private keys are impossible. This is because the subroutine in
843 question is not used in operations with the private key itself and an input
844 of the attacker's direct choice. Otherwise the bug can manifest itself as
845 transient authentication and key negotiation failures or reproducible
846 erroneous outcome of public-key operations with specially crafted input.
847 Among EC algorithms only Brainpool P-512 curves are affected and one
848 presumably can attack ECDH key negotiation. Impact was not analyzed in
849 detail, because pre-requisites for attack are considered unlikely. Namely
850 multiple clients have to choose the curve in question and the server has to
851 share the private key among them, neither of which is default behaviour.
852 Even then only clients that chose the curve will be affected.
854 This issue was publicly reported as transient failures and was not
855 initially recognized as a security issue. Thanks to Richard Morgan for
856 providing reproducible case.
860 *) Removed automatic addition of RPATH in shared libraries and executables,
861 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
864 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
866 *) Fix Use After Free for large message sizes
868 The patch applied to address CVE-2016-6307 resulted in an issue where if a
869 message larger than approx 16k is received then the underlying buffer to
870 store the incoming message is reallocated and moved. Unfortunately a
871 dangling pointer to the old location is left which results in an attempt to
872 write to the previously freed location. This is likely to result in a
873 crash, however it could potentially lead to execution of arbitrary code.
875 This issue only affects OpenSSL 1.1.0a.
877 This issue was reported to OpenSSL by Robert Święcki.
881 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
883 *) OCSP Status Request extension unbounded memory growth
885 A malicious client can send an excessively large OCSP Status Request
886 extension. If that client continually requests renegotiation, sending a
887 large OCSP Status Request extension each time, then there will be unbounded
888 memory growth on the server. This will eventually lead to a Denial Of
889 Service attack through memory exhaustion. Servers with a default
890 configuration are vulnerable even if they do not support OCSP. Builds using
891 the "no-ocsp" build time option are not affected.
893 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
897 *) SSL_peek() hang on empty record
899 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
900 sends an empty record. This could be exploited by a malicious peer in a
901 Denial Of Service attack.
903 This issue was reported to OpenSSL by Alex Gaynor.
907 *) Excessive allocation of memory in tls_get_message_header() and
908 dtls1_preprocess_fragment()
910 A (D)TLS message includes 3 bytes for its length in the header for the
911 message. This would allow for messages up to 16Mb in length. Messages of
912 this length are excessive and OpenSSL includes a check to ensure that a
913 peer is sending reasonably sized messages in order to avoid too much memory
914 being consumed to service a connection. A flaw in the logic of version
915 1.1.0 means that memory for the message is allocated too early, prior to
916 the excessive message length check. Due to way memory is allocated in
917 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
918 to service a connection. This could lead to a Denial of Service through
919 memory exhaustion. However, the excessive message length check still takes
920 place, and this would cause the connection to immediately fail. Assuming
921 that the application calls SSL_free() on the failed connection in a timely
922 manner then the 21Mb of allocated memory will then be immediately freed
923 again. Therefore the excessive memory allocation will be transitory in
924 nature. This then means that there is only a security impact if:
926 1) The application does not call SSL_free() in a timely manner in the event
927 that the connection fails
929 2) The application is working in a constrained environment where there is
930 very little free memory
932 3) The attacker initiates multiple connection attempts such that there are
933 multiple connections in a state where memory has been allocated for the
934 connection; SSL_free() has not yet been called; and there is insufficient
935 memory to service the multiple requests.
937 Except in the instance of (1) above any Denial Of Service is likely to be
938 transitory because as soon as the connection fails the memory is
939 subsequently freed again in the SSL_free() call. However there is an
940 increased risk during this period of application crashes due to the lack of
941 memory - which would then mean a more serious Denial of Service.
943 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
944 (CVE-2016-6307 and CVE-2016-6308)
947 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
948 had to be removed. Primary reason is that vendor assembler can't
949 assemble our modules with -KPIC flag. As result it, assembly
950 support, was not even available as option. But its lack means
951 lack of side-channel resistant code, which is incompatible with
952 security by todays standards. Fortunately gcc is readily available
953 prepackaged option, which we firmly point at...
956 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
958 *) Windows command-line tool supports UTF-8 opt-in option for arguments
959 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
960 (to any value) allows Windows user to access PKCS#12 file generated
961 with Windows CryptoAPI and protected with non-ASCII password, as well
962 as files generated under UTF-8 locale on Linux also protected with
966 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
967 have been disabled by default and removed from DEFAULT, just like RC4.
968 See the RC4 item below to re-enable both.
971 *) The method for finding the storage location for the Windows RAND seed file
972 has changed. First we check %RANDFILE%. If that is not set then we check
973 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
974 all else fails we fall back to C:\.
977 *) The EVP_EncryptUpdate() function has had its return type changed from void
978 to int. A return of 0 indicates and error while a return of 1 indicates
982 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
983 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
984 off the constant time implementation for RSA, DSA and DH have been made
985 no-ops and deprecated.
988 *) Windows RAND implementation was simplified to only get entropy by
989 calling CryptGenRandom(). Various other RAND-related tickets
991 [Joseph Wylie Yandle, Rich Salz]
993 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
994 and OPENSSL_LH_, respectively. The old names are available
995 with API compatibility. They new names are now completely documented.
998 *) Unify TYPE_up_ref(obj) methods signature.
999 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
1000 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
1001 int (instead of void) like all others TYPE_up_ref() methods.
1002 So now these methods also check the return value of CRYPTO_atomic_add(),
1003 and the validity of object reference counter.
1004 [fdasilvayy@gmail.com]
1006 *) With Windows Visual Studio builds, the .pdb files are installed
1007 alongside the installed libraries and executables. For a static
1008 library installation, ossl_static.pdb is the associate compiler
1009 generated .pdb file to be used when linking programs.
1012 *) Remove openssl.spec. Packaging files belong with the packagers.
1015 *) Automatic Darwin/OSX configuration has had a refresh, it will now
1016 recognise x86_64 architectures automatically. You can still decide
1017 to build for a different bitness with the environment variable
1018 KERNEL_BITS (can be 32 or 64), for example:
1020 KERNEL_BITS=32 ./config
1024 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
1025 256 bit AES and HMAC with SHA256.
1028 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
1031 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
1034 *) To enable users to have their own config files and build file templates,
1035 Configure looks in the directory indicated by the environment variable
1036 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
1037 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
1038 name and is used as is.
1041 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
1042 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
1043 X509_CERT_FILE_CTX was removed.
1046 *) "shared" builds are now the default. To create only static libraries use
1047 the "no-shared" Configure option.
1050 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
1051 All of these option have not worked for some while and are fundamental
1055 *) Make various cleanup routines no-ops and mark them as deprecated. Most
1056 global cleanup functions are no longer required because they are handled
1057 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
1058 Explicitly de-initing can cause problems (e.g. where a library that uses
1059 OpenSSL de-inits, but an application is still using it). The affected
1060 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
1061 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
1062 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
1063 COMP_zlib_cleanup().
1066 *) --strict-warnings no longer enables runtime debugging options
1067 such as REF_DEBUG. Instead, debug options are automatically
1068 enabled with '--debug' builds.
1069 [Andy Polyakov, Emilia Käsper]
1071 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
1072 have been moved out of the public header files. New functions for managing
1073 these have been added.
1076 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
1077 objects have been moved out of the public header files. New
1078 functions for managing these have been added.
1081 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
1082 have been moved out of the public header files. New functions for managing
1083 these have been added.
1086 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
1087 moved out of the public header files. New functions for managing these
1091 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
1094 *) Removed the mk1mf build scripts.
1097 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
1098 it is always safe to #include a header now.
1101 *) Removed the aged BC-32 config and all its supporting scripts
1104 *) Removed support for Ultrix, Netware, and OS/2.
1107 *) Add support for HKDF.
1108 [Alessandro Ghedini]
1110 *) Add support for blake2b and blake2s
1113 *) Added support for "pipelining". Ciphers that have the
1114 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
1115 encryptions/decryptions simultaneously. There are currently no built-in
1116 ciphers with this property but the expectation is that engines will be able
1117 to offer it to significantly improve throughput. Support has been extended
1118 into libssl so that multiple records for a single connection can be
1119 processed in one go (for >=TLS 1.1).
1122 *) Added the AFALG engine. This is an async capable engine which is able to
1123 offload work to the Linux kernel. In this initial version it only supports
1124 AES128-CBC. The kernel must be version 4.1.0 or greater.
1127 *) OpenSSL now uses a new threading API. It is no longer necessary to
1128 set locking callbacks to use OpenSSL in a multi-threaded environment. There
1129 are two supported threading models: pthreads and windows threads. It is
1130 also possible to configure OpenSSL at compile time for "no-threads". The
1131 old threading API should no longer be used. The functions have been
1132 replaced with "no-op" compatibility macros.
1133 [Alessandro Ghedini, Matt Caswell]
1135 *) Modify behavior of ALPN to invoke callback after SNI/servername
1136 callback, such that updates to the SSL_CTX affect ALPN.
1139 *) Add SSL_CIPHER queries for authentication and key-exchange.
1142 *) Changes to the DEFAULT cipherlist:
1143 - Prefer (EC)DHE handshakes over plain RSA.
1144 - Prefer AEAD ciphers over legacy ciphers.
1145 - Prefer ECDSA over RSA when both certificates are available.
1146 - Prefer TLSv1.2 ciphers/PRF.
1147 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
1151 *) Change the ECC default curve list to be this, in order: x25519,
1152 secp256r1, secp521r1, secp384r1.
1155 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
1156 disabled by default. They can be re-enabled using the
1157 enable-weak-ssl-ciphers option to Configure.
1160 *) If the server has ALPN configured, but supports no protocols that the
1161 client advertises, send a fatal "no_application_protocol" alert.
1162 This behaviour is SHALL in RFC 7301, though it isn't universally
1163 implemented by other servers.
1166 *) Add X25519 support.
1167 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
1168 for public and private key encoding using the format documented in
1169 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
1170 key generation and key derivation.
1172 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
1176 *) Deprecate SRP_VBASE_get_by_user.
1177 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1178 In order to fix an unavoidable memory leak (CVE-2016-0798),
1179 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
1180 seed, even if the seed is configured.
1182 Users should use SRP_VBASE_get1_by_user instead. Note that in
1183 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1184 also that even though configuring the SRP seed attempts to hide
1185 invalid usernames by continuing the handshake with fake
1186 credentials, this behaviour is not constant time and no strong
1187 guarantees are made that the handshake is indistinguishable from
1188 that of a valid user.
1191 *) Configuration change; it's now possible to build dynamic engines
1192 without having to build shared libraries and vice versa. This
1193 only applies to the engines in engines/, those in crypto/engine/
1194 will always be built into libcrypto (i.e. "static").
1196 Building dynamic engines is enabled by default; to disable, use
1197 the configuration option "disable-dynamic-engine".
1199 The only requirements for building dynamic engines are the
1200 presence of the DSO module and building with position independent
1201 code, so they will also automatically be disabled if configuring
1202 with "disable-dso" or "disable-pic".
1204 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
1205 are also taken away from openssl/opensslconf.h, as they are
1209 *) Configuration change; if there is a known flag to compile
1210 position independent code, it will always be applied on the
1211 libcrypto and libssl object files, and never on the application
1212 object files. This means other libraries that use routines from
1213 libcrypto / libssl can be made into shared libraries regardless
1214 of how OpenSSL was configured.
1216 If this isn't desirable, the configuration options "disable-pic"
1217 or "no-pic" can be used to disable the use of PIC. This will
1218 also disable building shared libraries and dynamic engines.
1221 *) Removed JPAKE code. It was experimental and has no wide use.
1224 *) The INSTALL_PREFIX Makefile variable has been renamed to
1225 DESTDIR. That makes for less confusion on what this variable
1226 is for. Also, the configuration option --install_prefix is
1230 *) Heartbeat for TLS has been removed and is disabled by default
1231 for DTLS; configure with enable-heartbeats. Code that uses the
1232 old #define's might need to be updated.
1233 [Emilia Käsper, Rich Salz]
1235 *) Rename REF_CHECK to REF_DEBUG.
1238 *) New "unified" build system
1240 The "unified" build system is aimed to be a common system for all
1241 platforms we support. With it comes new support for VMS.
1243 This system builds supports building in a different directory tree
1244 than the source tree. It produces one Makefile (for unix family
1245 or lookalikes), or one descrip.mms (for VMS).
1247 The source of information to make the Makefile / descrip.mms is
1248 small files called 'build.info', holding the necessary
1249 information for each directory with source to compile, and a
1250 template in Configurations, like unix-Makefile.tmpl or
1253 With this change, the library names were also renamed on Windows
1254 and on VMS. They now have names that are closer to the standard
1255 on Unix, and include the major version number, and in certain
1256 cases, the architecture they are built for. See "Notes on shared
1257 libraries" in INSTALL.
1259 We rely heavily on the perl module Text::Template.
1262 *) Added support for auto-initialisation and de-initialisation of the library.
1263 OpenSSL no longer requires explicit init or deinit routines to be called,
1264 except in certain circumstances. See the OPENSSL_init_crypto() and
1265 OPENSSL_init_ssl() man pages for further information.
1268 *) The arguments to the DTLSv1_listen function have changed. Specifically the
1269 "peer" argument is now expected to be a BIO_ADDR object.
1271 *) Rewrite of BIO networking library. The BIO library lacked consistent
1272 support of IPv6, and adding it required some more extensive
1273 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
1274 which hold all types of addresses and chains of address information.
1275 It also introduces a new API, with functions like BIO_socket,
1276 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
1277 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
1278 have been adapted accordingly.
1281 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
1285 *) CRIME protection: disable compression by default, even if OpenSSL is
1286 compiled with zlib enabled. Applications can still enable compression
1287 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
1288 using the SSL_CONF library to configure compression.
1291 *) The signature of the session callback configured with
1292 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
1293 was explicitly marked as 'const unsigned char*' instead of
1297 *) Always DPURIFY. Remove the use of uninitialized memory in the
1298 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
1301 *) Removed many obsolete configuration items, including
1302 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
1303 MD2_CHAR, MD2_INT, MD2_LONG
1305 IDEA_SHORT, IDEA_LONG
1306 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
1307 [Rich Salz, with advice from Andy Polyakov]
1309 *) Many BN internals have been moved to an internal header file.
1310 [Rich Salz with help from Andy Polyakov]
1312 *) Configuration and writing out the results from it has changed.
1313 Files such as Makefile include/openssl/opensslconf.h and are now
1314 produced through general templates, such as Makefile.in and
1315 crypto/opensslconf.h.in and some help from the perl module
1318 Also, the center of configuration information is no longer
1319 Makefile. Instead, Configure produces a perl module in
1320 configdata.pm which holds most of the config data (in the hash
1321 table %config), the target data that comes from the target
1322 configuration in one of the Configurations/*.conf files (in
1326 *) To clarify their intended purposes, the Configure options
1327 --prefix and --openssldir change their semantics, and become more
1328 straightforward and less interdependent.
1330 --prefix shall be used exclusively to give the location INSTALLTOP
1331 where programs, scripts, libraries, include files and manuals are
1332 going to be installed. The default is now /usr/local.
1334 --openssldir shall be used exclusively to give the default
1335 location OPENSSLDIR where certificates, private keys, CRLs are
1336 managed. This is also where the default openssl.cnf gets
1338 If the directory given with this option is a relative path, the
1339 values of both the --prefix value and the --openssldir value will
1340 be combined to become OPENSSLDIR.
1341 The default for --openssldir is INSTALLTOP/ssl.
1343 Anyone who uses --openssldir to specify where OpenSSL is to be
1344 installed MUST change to use --prefix instead.
1347 *) The GOST engine was out of date and therefore it has been removed. An up
1348 to date GOST engine is now being maintained in an external repository.
1349 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
1350 support for GOST ciphersuites (these are only activated if a GOST engine
1354 *) EGD is no longer supported by default; use enable-egd when
1356 [Ben Kaduk and Rich Salz]
1358 *) The distribution now has Makefile.in files, which are used to
1359 create Makefile's when Configure is run. *Configure must be run
1360 before trying to build now.*
1363 *) The return value for SSL_CIPHER_description() for error conditions
1367 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
1369 Obtaining and performing DNSSEC validation of TLSA records is
1370 the application's responsibility. The application provides
1371 the TLSA records of its choice to OpenSSL, and these are then
1372 used to authenticate the peer.
1374 The TLSA records need not even come from DNS. They can, for
1375 example, be used to implement local end-entity certificate or
1376 trust-anchor "pinning", where the "pin" data takes the form
1377 of TLSA records, which can augment or replace verification
1378 based on the usual WebPKI public certification authorities.
1381 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
1382 continues to support deprecated interfaces in default builds.
1383 However, applications are strongly advised to compile their
1384 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
1385 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
1386 or the 1.1.0 releases.
1388 In environments in which all applications have been ported to
1389 not use any deprecated interfaces OpenSSL's Configure script
1390 should be used with the --api=1.1.0 option to entirely remove
1391 support for the deprecated features from the library and
1392 unconditionally disable them in the installed headers.
1393 Essentially the same effect can be achieved with the "no-deprecated"
1394 argument to Configure, except that this will always restrict
1395 the build to just the latest API, rather than a fixed API
1398 As applications are ported to future revisions of the API,
1399 they should update their compile-time OPENSSL_API_COMPAT define
1400 accordingly, but in most cases should be able to continue to
1401 compile with later releases.
1403 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
1404 0x10000000L and 0x00908000L, respectively. However those
1405 versions did not support the OPENSSL_API_COMPAT feature, and
1406 so applications are not typically tested for explicit support
1407 of just the undeprecated features of either release.
1410 *) Add support for setting the minimum and maximum supported protocol.
1411 It can bet set via the SSL_set_min_proto_version() and
1412 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
1413 MaxProtocol. It's recommended to use the new APIs to disable
1414 protocols instead of disabling individual protocols using
1415 SSL_set_options() or SSL_CONF's Protocol. This change also
1416 removes support for disabling TLS 1.2 in the OpenSSL TLS
1417 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
1420 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
1423 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
1424 and integrates ECDSA and ECDH functionality into EC. Implementations can
1425 now redirect key generation and no longer need to convert to or from
1428 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
1429 include the ec.h header file instead.
1432 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
1433 ciphers who are no longer supported and drops support the ephemeral RSA key
1434 exchange. The LOW ciphers currently doesn't have any ciphers in it.
1437 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
1438 opaque. For HMAC_CTX, the following constructors and destructors
1441 HMAC_CTX *HMAC_CTX_new(void);
1442 void HMAC_CTX_free(HMAC_CTX *ctx);
1444 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
1445 destroy such methods has been added. See EVP_MD_meth_new(3) and
1446 EVP_CIPHER_meth_new(3) for documentation.
1449 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
1450 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
1451 EVP_MD_CTX_reset() should be called instead to reinitialise
1452 an already created structure.
1453 2) For consistency with the majority of our object creators and
1454 destructors, EVP_MD_CTX_(create|destroy) were renamed to
1455 EVP_MD_CTX_(new|free). The old names are retained as macros
1456 for deprecated builds.
1459 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
1460 cryptographic operations to be performed asynchronously as long as an
1461 asynchronous capable engine is used. See the ASYNC_start_job() man page for
1462 further details. Libssl has also had this capability integrated with the
1463 introduction of the new mode SSL_MODE_ASYNC and associated error
1464 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
1465 pages. This work was developed in partnership with Intel Corp.
1468 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
1469 always enabled now. If you want to disable the support you should
1470 exclude it using the list of supported ciphers. This also means that the
1471 "-no_ecdhe" option has been removed from s_server.
1474 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
1475 SSL_{CTX_}set1_curves() which can set a list.
1478 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
1479 curve you want to support using SSL_{CTX_}set1_curves().
1482 *) State machine rewrite. The state machine code has been significantly
1483 refactored in order to remove much duplication of code and solve issues
1484 with the old code (see ssl/statem/README for further details). This change
1485 does have some associated API changes. Notably the SSL_state() function
1486 has been removed and replaced by SSL_get_state which now returns an
1487 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
1488 altogether. The previous handshake states defined in ssl.h and ssl3.h have
1492 *) All instances of the string "ssleay" in the public API were replaced
1493 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
1494 Some error codes related to internal RSA_eay API's were renamed.
1497 *) The demo files in crypto/threads were moved to demo/threads.
1500 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
1502 [Matt Caswell, Rich Salz]
1504 *) New ASN.1 embed macro.
1506 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
1507 structure is not allocated: it is part of the parent. That is instead of
1515 This reduces memory fragmentation and make it impossible to accidentally
1516 set a mandatory field to NULL.
1518 This currently only works for some fields specifically a SEQUENCE, CHOICE,
1519 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
1520 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
1524 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
1527 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
1528 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
1529 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
1530 DES and RC4 ciphersuites.
1533 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
1534 This changes the decoding behaviour for some invalid messages,
1535 though the change is mostly in the more lenient direction, and
1536 legacy behaviour is preserved as much as possible.
1539 *) Fix no-stdio build.
1540 [ David Woodhouse <David.Woodhouse@intel.com> and also
1541 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
1543 *) New testing framework
1544 The testing framework has been largely rewritten and is now using
1545 perl and the perl modules Test::Harness and an extended variant of
1546 Test::More called OpenSSL::Test to do its work. All test scripts in
1547 test/ have been rewritten into test recipes, and all direct calls to
1548 executables in test/Makefile have become individual recipes using the
1549 simplified testing OpenSSL::Test::Simple.
1551 For documentation on our testing modules, do:
1553 perldoc test/testlib/OpenSSL/Test/Simple.pm
1554 perldoc test/testlib/OpenSSL/Test.pm
1558 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
1559 are used; the latter aborts on memory leaks (usually checked on exit).
1560 Some undocumented "set malloc, etc., hooks" functions were removed
1561 and others were changed. All are now documented.
1564 *) In DSA_generate_parameters_ex, if the provided seed is too short,
1566 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
1568 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
1569 from RFC4279, RFC4785, RFC5487, RFC5489.
1571 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
1572 original RSA_PSK patch.
1575 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
1576 era flag was never set throughout the codebase (only read). Also removed
1577 SSL3_FLAGS_POP_BUFFER which was only used if
1578 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
1581 *) Changed the default name options in the "ca", "crl", "req" and "x509"
1582 to be "oneline" instead of "compat".
1585 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
1586 not aware of clients that still exhibit this bug, and the workaround
1587 hasn't been working properly for a while.
1590 *) The return type of BIO_number_read() and BIO_number_written() as well as
1591 the corresponding num_read and num_write members in the BIO structure has
1592 changed from unsigned long to uint64_t. On platforms where an unsigned
1593 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
1597 *) Given the pervasive nature of TLS extensions it is inadvisable to run
1598 OpenSSL without support for them. It also means that maintaining
1599 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
1600 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
1603 *) Removed support for the two export grade static DH ciphersuites
1604 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
1605 were newly added (along with a number of other static DH ciphersuites) to
1606 1.0.2. However the two export ones have *never* worked since they were
1607 introduced. It seems strange in any case to be adding new export
1608 ciphersuites, and given "logjam" it also does not seem correct to fix them.
1611 *) Version negotiation has been rewritten. In particular SSLv23_method(),
1612 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
1613 and turned into macros which simply call the new preferred function names
1614 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
1615 should use the new names instead. Also as part of this change the ssl23.h
1616 header file has been removed.
1619 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
1620 code and the associated standard is no longer considered fit-for-purpose.
1623 *) RT2547 was closed. When generating a private key, try to make the
1624 output file readable only by the owner. This behavior change might
1625 be noticeable when interacting with other software.
1627 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
1631 *) Added HTTP GET support to the ocsp command.
1634 *) Changed default digest for the dgst and enc commands from MD5 to
1638 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
1641 *) Added support for TLS extended master secret from
1642 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
1643 initial patch which was a great help during development.
1646 *) All libssl internal structures have been removed from the public header
1647 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
1648 now redundant). Users should not attempt to access internal structures
1649 directly. Instead they should use the provided API functions.
1652 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
1653 Access to deprecated functions can be re-enabled by running config with
1654 "enable-deprecated". In addition applications wishing to use deprecated
1655 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
1656 will, by default, disable some transitive includes that previously existed
1657 in the header files (e.g. ec.h will no longer, by default, include bn.h)
1660 *) Added support for OCB mode. OpenSSL has been granted a patent license
1661 compatible with the OpenSSL license for use of OCB. Details are available
1662 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
1663 for OCB can be removed by calling config with no-ocb.
1666 *) SSLv2 support has been removed. It still supports receiving a SSLv2
1667 compatible client hello.
1670 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
1671 done while fixing the error code for the key-too-small case.
1672 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
1674 *) CA.sh has been removed; use CA.pl instead.
1677 *) Removed old DES API.
1680 *) Remove various unsupported platforms:
1686 Sinix/ReliantUNIX RM400
1691 16-bit platforms such as WIN16
1694 *) Clean up OPENSSL_NO_xxx #define's
1695 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
1696 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
1697 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
1698 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
1699 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
1700 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
1701 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
1702 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
1703 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
1704 Remove MS_STATIC; it's a relic from platforms <32 bits.
1707 *) Cleaned up dead code
1708 Remove all but one '#ifdef undef' which is to be looked at.
1711 *) Clean up calling of xxx_free routines.
1712 Just like free(), fix most of the xxx_free routines to accept
1713 NULL. Remove the non-null checks from callers. Save much code.
1716 *) Add secure heap for storage of private keys (when possible).
1717 Add BIO_s_secmem(), CBIGNUM, etc.
1718 Contributed by Akamai Technologies under our Corporate CLA.
1721 *) Experimental support for a new, fast, unbiased prime candidate generator,
1722 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
1723 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
1725 *) New output format NSS in the sess_id command line tool. This allows
1726 exporting the session id and the master key in NSS keylog format.
1727 [Martin Kaiser <martin@kaiser.cx>]
1729 *) Harmonize version and its documentation. -f flag is used to display
1731 [mancha <mancha1@zoho.com>]
1733 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1734 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
1735 [mancha <mancha1@zoho.com>]
1737 *) Fix some double frees. These are not thought to be exploitable.
1738 [mancha <mancha1@zoho.com>]
1740 *) A missing bounds check in the handling of the TLS heartbeat extension
1741 can be used to reveal up to 64k of memory to a connected client or
1744 Thanks for Neel Mehta of Google Security for discovering this bug and to
1745 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1746 preparing the fix (CVE-2014-0160)
1747 [Adam Langley, Bodo Moeller]
1749 *) Fix for the attack described in the paper "Recovering OpenSSL
1750 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1751 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1752 http://eprint.iacr.org/2014/140
1754 Thanks to Yuval Yarom and Naomi Benger for discovering this
1755 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1756 [Yuval Yarom and Naomi Benger]
1758 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
1759 this fixes a limitation in previous versions of OpenSSL.
1762 *) Experimental encrypt-then-mac support.
1764 Experimental support for encrypt then mac from
1765 draft-gutmann-tls-encrypt-then-mac-02.txt
1767 To enable it set the appropriate extension number (0x42 for the test
1768 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
1770 For non-compliant peers (i.e. just about everything) this should have no
1773 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
1777 *) Add EVP support for key wrapping algorithms, to avoid problems with
1778 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
1779 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
1780 algorithms and include tests cases.
1783 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
1787 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
1788 MGF1 digest and OAEP label.
1791 *) Make openssl verify return errors.
1792 [Chris Palmer <palmer@google.com> and Ben Laurie]
1794 *) New function ASN1_TIME_diff to calculate the difference between two
1795 ASN1_TIME structures or one structure and the current time.
1798 *) Update fips_test_suite to support multiple command line options. New
1799 test to induce all self test errors in sequence and check expected
1803 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
1804 sign or verify all in one operation.
1807 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
1808 test programs and fips_test_suite. Includes functionality to parse
1809 the minimal script output of fipsalgest.pl directly.
1812 *) Add authorisation parameter to FIPS_module_mode_set().
1815 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
1818 *) Use separate DRBG fields for internal and external flags. New function
1819 FIPS_drbg_health_check() to perform on demand health checking. Add
1820 generation tests to fips_test_suite with reduced health check interval to
1821 demonstrate periodic health checking. Add "nodh" option to
1822 fips_test_suite to skip very slow DH test.
1825 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
1829 *) More extensive health check for DRBG checking many more failure modes.
1830 New function FIPS_selftest_drbg_all() to handle every possible DRBG
1831 combination: call this in fips_test_suite.
1834 *) Add support for canonical generation of DSA parameter 'g'. See
1837 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
1838 POST to handle HMAC cases.
1841 *) Add functions FIPS_module_version() and FIPS_module_version_text()
1842 to return numerical and string versions of the FIPS module number.
1845 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
1846 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
1847 outside the validated module in the FIPS capable OpenSSL.
1850 *) Minor change to DRBG entropy callback semantics. In some cases
1851 there is no multiple of the block length between min_len and
1852 max_len. Allow the callback to return more than max_len bytes
1853 of entropy but discard any extra: it is the callback's responsibility
1854 to ensure that the extra data discarded does not impact the
1855 requested amount of entropy.
1858 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
1859 information in FIPS186-3, SP800-57 and SP800-131A.
1862 *) CCM support via EVP. Interface is very similar to GCM case except we
1863 must supply all data in one chunk (i.e. no update, final) and the
1864 message length must be supplied if AAD is used. Add algorithm test
1868 *) Initial version of POST overhaul. Add POST callback to allow the status
1869 of POST to be monitored and/or failures induced. Modify fips_test_suite
1870 to use callback. Always run all selftests even if one fails.
1873 *) XTS support including algorithm test driver in the fips_gcmtest program.
1874 Note: this does increase the maximum key length from 32 to 64 bytes but
1875 there should be no binary compatibility issues as existing applications
1876 will never use XTS mode.
1879 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
1880 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
1881 performs algorithm blocking for unapproved PRNG types. Also do not
1882 set PRNG type in FIPS_mode_set(): leave this to the application.
1883 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
1884 the standard OpenSSL PRNG: set additional data to a date time vector.
1887 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
1888 This shouldn't present any incompatibility problems because applications
1889 shouldn't be using these directly and any that are will need to rethink
1890 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
1893 *) Extensive self tests and health checking required by SP800-90 DRBG.
1894 Remove strength parameter from FIPS_drbg_instantiate and always
1895 instantiate at maximum supported strength.
1898 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
1901 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
1904 *) New function DH_compute_key_padded() to compute a DH key and pad with
1905 leading zeroes if needed: this complies with SP800-56A et al.
1908 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
1909 anything, incomplete, subject to change and largely untested at present.
1912 *) Modify fipscanisteronly build option to only build the necessary object
1913 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
1916 *) Add experimental option FIPSSYMS to give all symbols in
1917 fipscanister.o and FIPS or fips prefix. This will avoid
1918 conflicts with future versions of OpenSSL. Add perl script
1919 util/fipsas.pl to preprocess assembly language source files
1920 and rename any affected symbols.
1923 *) Add selftest checks and algorithm block of non-fips algorithms in
1924 FIPS mode. Remove DES2 from selftests.
1927 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
1928 return internal method without any ENGINE dependencies. Add new
1929 tiny fips sign and verify functions.
1932 *) New build option no-ec2m to disable characteristic 2 code.
1935 *) New build option "fipscanisteronly". This only builds fipscanister.o
1936 and (currently) associated fips utilities. Uses the file Makefile.fips
1937 instead of Makefile.org as the prototype.
1940 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
1941 Update fips_gcmtest to use IV generator.
1944 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
1945 setting output buffer to NULL. The *Final function must be
1946 called although it will not retrieve any additional data. The tag
1947 can be set or retrieved with a ctrl. The IV length is by default 12
1948 bytes (96 bits) but can be set to an alternative value. If the IV
1949 length exceeds the maximum IV length (currently 16 bytes) it cannot be
1953 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
1954 underlying do_cipher function handles all cipher semantics itself
1955 including padding and finalisation. This is useful if (for example)
1956 an ENGINE cipher handles block padding itself. The behaviour of
1957 do_cipher is subtly changed if this flag is set: the return value
1958 is the number of characters written to the output buffer (zero is
1959 no longer an error code) or a negative error code. Also if the
1960 input buffer is NULL and length 0 finalisation should be performed.
1963 *) If a candidate issuer certificate is already part of the constructed
1964 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
1967 *) Improve forward-security support: add functions
1969 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
1970 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
1972 for use by SSL/TLS servers; the callback function will be called whenever a
1973 new session is created, and gets to decide whether the session may be
1974 cached to make it resumable (return 0) or not (return 1). (As by the
1975 SSL/TLS protocol specifications, the session_id sent by the server will be
1976 empty to indicate that the session is not resumable; also, the server will
1977 not generate RFC 4507 (RFC 5077) session tickets.)
1979 A simple reasonable callback implementation is to return is_forward_secure.
1980 This parameter will be set to 1 or 0 depending on the ciphersuite selected
1981 by the SSL/TLS server library, indicating whether it can provide forward
1983 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1985 *) New -verify_name option in command line utilities to set verification
1989 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
1990 Add CMAC pkey methods.
1993 *) Experimental renegotiation in s_server -www mode. If the client
1994 browses /reneg connection is renegotiated. If /renegcert it is
1995 renegotiated requesting a certificate.
1998 *) Add an "external" session cache for debugging purposes to s_server. This
1999 should help trace issues which normally are only apparent in deployed
2000 multi-process servers.
2003 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
2004 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
2005 BIO_set_cipher() and some obscure PEM functions were changed so they
2006 can now return an error. The RAND changes required a change to the
2007 RAND_METHOD structure.
2010 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
2011 a gcc attribute to warn if the result of a function is ignored. This
2012 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
2013 whose return value is often ignored.
2016 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
2017 These allow SCTs (signed certificate timestamps) to be requested and
2018 validated when establishing a connection.
2019 [Rob Percival <robpercival@google.com>]
2021 Changes between 1.0.2g and 1.0.2h [3 May 2016]
2023 *) Prevent padding oracle in AES-NI CBC MAC check
2025 A MITM attacker can use a padding oracle attack to decrypt traffic
2026 when the connection uses an AES CBC cipher and the server support
2029 This issue was introduced as part of the fix for Lucky 13 padding
2030 attack (CVE-2013-0169). The padding check was rewritten to be in
2031 constant time by making sure that always the same bytes are read and
2032 compared against either the MAC or padding bytes. But it no longer
2033 checked that there was enough data to have both the MAC and padding
2036 This issue was reported by Juraj Somorovsky using TLS-Attacker.
2040 *) Fix EVP_EncodeUpdate overflow
2042 An overflow can occur in the EVP_EncodeUpdate() function which is used for
2043 Base64 encoding of binary data. If an attacker is able to supply very large
2044 amounts of input data then a length check can overflow resulting in a heap
2047 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
2048 the PEM_write_bio* family of functions. These are mainly used within the
2049 OpenSSL command line applications, so any application which processes data
2050 from an untrusted source and outputs it as a PEM file should be considered
2051 vulnerable to this issue. User applications that call these APIs directly
2052 with large amounts of untrusted data may also be vulnerable.
2054 This issue was reported by Guido Vranken.
2058 *) Fix EVP_EncryptUpdate overflow
2060 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
2061 is able to supply very large amounts of input data after a previous call to
2062 EVP_EncryptUpdate() with a partial block then a length check can overflow
2063 resulting in a heap corruption. Following an analysis of all OpenSSL
2064 internal usage of the EVP_EncryptUpdate() function all usage is one of two
2065 forms. The first form is where the EVP_EncryptUpdate() call is known to be
2066 the first called function after an EVP_EncryptInit(), and therefore that
2067 specific call must be safe. The second form is where the length passed to
2068 EVP_EncryptUpdate() can be seen from the code to be some small value and
2069 therefore there is no possibility of an overflow. Since all instances are
2070 one of these two forms, it is believed that there can be no overflows in
2071 internal code due to this problem. It should be noted that
2072 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
2073 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
2074 of these calls have also been analysed too and it is believed there are no
2075 instances in internal usage where an overflow could occur.
2077 This issue was reported by Guido Vranken.
2081 *) Prevent ASN.1 BIO excessive memory allocation
2083 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
2084 a short invalid encoding can cause allocation of large amounts of memory
2085 potentially consuming excessive resources or exhausting memory.
2087 Any application parsing untrusted data through d2i BIO functions is
2088 affected. The memory based functions such as d2i_X509() are *not* affected.
2089 Since the memory based functions are used by the TLS library, TLS
2090 applications are not affected.
2092 This issue was reported by Brian Carpenter.
2098 ASN1 Strings that are over 1024 bytes can cause an overread in applications
2099 using the X509_NAME_oneline() function on EBCDIC systems. This could result
2100 in arbitrary stack data being returned in the buffer.
2102 This issue was reported by Guido Vranken.
2106 *) Modify behavior of ALPN to invoke callback after SNI/servername
2107 callback, such that updates to the SSL_CTX affect ALPN.
2110 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
2114 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
2115 methods are enabled and ssl2 is disabled the methods return NULL.
2118 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
2120 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
2121 Builds that are not configured with "enable-weak-ssl-ciphers" will not
2122 provide any "EXPORT" or "LOW" strength ciphers.
2125 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
2126 is by default disabled at build-time. Builds that are not configured with
2127 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
2128 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
2129 will need to explicitly call either of:
2131 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
2133 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
2135 as appropriate. Even if either of those is used, or the application
2136 explicitly uses the version-specific SSLv2_method() or its client and
2137 server variants, SSLv2 ciphers vulnerable to exhaustive search key
2138 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
2139 ciphers, and SSLv2 56-bit DES are no longer available.
2143 *) Fix a double-free in DSA code
2145 A double free bug was discovered when OpenSSL parses malformed DSA private
2146 keys and could lead to a DoS attack or memory corruption for applications
2147 that receive DSA private keys from untrusted sources. This scenario is
2150 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
2155 *) Disable SRP fake user seed to address a server memory leak.
2157 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
2159 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
2160 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
2161 was changed to ignore the "fake user" SRP seed, even if the seed
2164 Users should use SRP_VBASE_get1_by_user instead. Note that in
2165 SRP_VBASE_get1_by_user, caller must free the returned value. Note
2166 also that even though configuring the SRP seed attempts to hide
2167 invalid usernames by continuing the handshake with fake
2168 credentials, this behaviour is not constant time and no strong
2169 guarantees are made that the handshake is indistinguishable from
2170 that of a valid user.
2174 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
2176 In the BN_hex2bn function the number of hex digits is calculated using an
2177 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
2178 large values of |i| this can result in |bn_expand| not allocating any
2179 memory because |i * 4| is negative. This can leave the internal BIGNUM data
2180 field as NULL leading to a subsequent NULL ptr deref. For very large values
2181 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
2182 In this case memory is allocated to the internal BIGNUM data field, but it
2183 is insufficiently sized leading to heap corruption. A similar issue exists
2184 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
2185 is ever called by user applications with very large untrusted hex/dec data.
2186 This is anticipated to be a rare occurrence.
2188 All OpenSSL internal usage of these functions use data that is not expected
2189 to be untrusted, e.g. config file data or application command line
2190 arguments. If user developed applications generate config file data based
2191 on untrusted data then it is possible that this could also lead to security
2192 consequences. This is also anticipated to be rare.
2194 This issue was reported to OpenSSL by Guido Vranken.
2198 *) Fix memory issues in BIO_*printf functions
2200 The internal |fmtstr| function used in processing a "%s" format string in
2201 the BIO_*printf functions could overflow while calculating the length of a
2202 string and cause an OOB read when printing very long strings.
2204 Additionally the internal |doapr_outch| function can attempt to write to an
2205 OOB memory location (at an offset from the NULL pointer) in the event of a
2206 memory allocation failure. In 1.0.2 and below this could be caused where
2207 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
2208 could be in processing a very long "%s" format string. Memory leaks can
2211 The first issue may mask the second issue dependent on compiler behaviour.
2212 These problems could enable attacks where large amounts of untrusted data
2213 is passed to the BIO_*printf functions. If applications use these functions
2214 in this way then they could be vulnerable. OpenSSL itself uses these
2215 functions when printing out human-readable dumps of ASN.1 data. Therefore
2216 applications that print this data could be vulnerable if the data is from
2217 untrusted sources. OpenSSL command line applications could also be
2218 vulnerable where they print out ASN.1 data, or if untrusted data is passed
2219 as command line arguments.
2221 Libssl is not considered directly vulnerable. Additionally certificates etc
2222 received via remote connections via libssl are also unlikely to be able to
2223 trigger these issues because of message size limits enforced within libssl.
2225 This issue was reported to OpenSSL Guido Vranken.
2229 *) Side channel attack on modular exponentiation
2231 A side-channel attack was found which makes use of cache-bank conflicts on
2232 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
2233 of RSA keys. The ability to exploit this issue is limited as it relies on
2234 an attacker who has control of code in a thread running on the same
2235 hyper-threaded core as the victim thread which is performing decryptions.
2237 This issue was reported to OpenSSL by Yuval Yarom, The University of
2238 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
2239 Nadia Heninger, University of Pennsylvania with more information at
2240 http://cachebleed.info.
2244 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
2245 if no keysize is specified with default_bits. This fixes an
2246 omission in an earlier change that changed all RSA/DSA key generation
2247 apps to use 2048 bits by default.
2250 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
2251 *) DH small subgroups
2253 Historically OpenSSL only ever generated DH parameters based on "safe"
2254 primes. More recently (in version 1.0.2) support was provided for
2255 generating X9.42 style parameter files such as those required for RFC 5114
2256 support. The primes used in such files may not be "safe". Where an
2257 application is using DH configured with parameters based on primes that are
2258 not "safe" then an attacker could use this fact to find a peer's private
2259 DH exponent. This attack requires that the attacker complete multiple
2260 handshakes in which the peer uses the same private DH exponent. For example
2261 this could be used to discover a TLS server's private DH exponent if it's
2262 reusing the private DH exponent or it's using a static DH ciphersuite.
2264 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
2265 TLS. It is not on by default. If the option is not set then the server
2266 reuses the same private DH exponent for the life of the server process and
2267 would be vulnerable to this attack. It is believed that many popular
2268 applications do set this option and would therefore not be at risk.
2270 The fix for this issue adds an additional check where a "q" parameter is
2271 available (as is the case in X9.42 based parameters). This detects the
2272 only known attack, and is the only possible defense for static DH
2273 ciphersuites. This could have some performance impact.
2275 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
2276 default and cannot be disabled. This could have some performance impact.
2278 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
2282 *) SSLv2 doesn't block disabled ciphers
2284 A malicious client can negotiate SSLv2 ciphers that have been disabled on
2285 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
2286 been disabled, provided that the SSLv2 protocol was not also disabled via
2289 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
2290 and Sebastian Schinzel.
2294 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
2296 *) BN_mod_exp may produce incorrect results on x86_64
2298 There is a carry propagating bug in the x86_64 Montgomery squaring
2299 procedure. No EC algorithms are affected. Analysis suggests that attacks
2300 against RSA and DSA as a result of this defect would be very difficult to
2301 perform and are not believed likely. Attacks against DH are considered just
2302 feasible (although very difficult) because most of the work necessary to
2303 deduce information about a private key may be performed offline. The amount
2304 of resources required for such an attack would be very significant and
2305 likely only accessible to a limited number of attackers. An attacker would
2306 additionally need online access to an unpatched system using the target
2307 private key in a scenario with persistent DH parameters and a private
2308 key that is shared between multiple clients. For example this can occur by
2309 default in OpenSSL DHE based SSL/TLS ciphersuites.
2311 This issue was reported to OpenSSL by Hanno Böck.
2315 *) Certificate verify crash with missing PSS parameter
2317 The signature verification routines will crash with a NULL pointer
2318 dereference if presented with an ASN.1 signature using the RSA PSS
2319 algorithm and absent mask generation function parameter. Since these
2320 routines are used to verify certificate signature algorithms this can be
2321 used to crash any certificate verification operation and exploited in a
2322 DoS attack. Any application which performs certificate verification is
2323 vulnerable including OpenSSL clients and servers which enable client
2326 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
2330 *) X509_ATTRIBUTE memory leak
2332 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
2333 memory. This structure is used by the PKCS#7 and CMS routines so any
2334 application which reads PKCS#7 or CMS data from untrusted sources is
2335 affected. SSL/TLS is not affected.
2337 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
2342 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2343 This changes the decoding behaviour for some invalid messages,
2344 though the change is mostly in the more lenient direction, and
2345 legacy behaviour is preserved as much as possible.
2348 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2350 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2352 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
2354 *) Alternate chains certificate forgery
2356 During certificate verification, OpenSSL will attempt to find an
2357 alternative certificate chain if the first attempt to build such a chain
2358 fails. An error in the implementation of this logic can mean that an
2359 attacker could cause certain checks on untrusted certificates to be
2360 bypassed, such as the CA flag, enabling them to use a valid leaf
2361 certificate to act as a CA and "issue" an invalid certificate.
2363 This issue was reported to OpenSSL by Adam Langley/David Benjamin
2367 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
2369 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
2370 incompatibility in the handling of HMAC. The previous ABI has now been
2374 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
2376 *) Malformed ECParameters causes infinite loop
2378 When processing an ECParameters structure OpenSSL enters an infinite loop
2379 if the curve specified is over a specially malformed binary polynomial
2382 This can be used to perform denial of service against any
2383 system which processes public keys, certificate requests or
2384 certificates. This includes TLS clients and TLS servers with
2385 client authentication enabled.
2387 This issue was reported to OpenSSL by Joseph Barr-Pixton.
2391 *) Exploitable out-of-bounds read in X509_cmp_time
2393 X509_cmp_time does not properly check the length of the ASN1_TIME
2394 string and can read a few bytes out of bounds. In addition,
2395 X509_cmp_time accepts an arbitrary number of fractional seconds in the
2398 An attacker can use this to craft malformed certificates and CRLs of
2399 various sizes and potentially cause a segmentation fault, resulting in
2400 a DoS on applications that verify certificates or CRLs. TLS clients
2401 that verify CRLs are affected. TLS clients and servers with client
2402 authentication enabled may be affected if they use custom verification
2405 This issue was reported to OpenSSL by Robert Swiecki (Google), and
2406 independently by Hanno Böck.
2410 *) PKCS7 crash with missing EnvelopedContent
2412 The PKCS#7 parsing code does not handle missing inner EncryptedContent
2413 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
2414 with missing content and trigger a NULL pointer dereference on parsing.
2416 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
2417 structures from untrusted sources are affected. OpenSSL clients and
2418 servers are not affected.
2420 This issue was reported to OpenSSL by Michal Zalewski (Google).
2424 *) CMS verify infinite loop with unknown hash function
2426 When verifying a signedData message the CMS code can enter an infinite loop
2427 if presented with an unknown hash function OID. This can be used to perform
2428 denial of service against any system which verifies signedData messages using
2430 This issue was reported to OpenSSL by Johannes Bauer.
2434 *) Race condition handling NewSessionTicket
2436 If a NewSessionTicket is received by a multi-threaded client when attempting to
2437 reuse a previous ticket then a race condition can occur potentially leading to
2438 a double free of the ticket data.
2442 *) Only support 256-bit or stronger elliptic curves with the
2443 'ecdh_auto' setting (server) or by default (client). Of supported
2444 curves, prefer P-256 (both).
2447 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
2449 *) ClientHello sigalgs DoS fix
2451 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
2452 invalid signature algorithms extension a NULL pointer dereference will
2453 occur. This can be exploited in a DoS attack against the server.
2455 This issue was was reported to OpenSSL by David Ramos of Stanford
2458 [Stephen Henson and Matt Caswell]
2460 *) Multiblock corrupted pointer fix
2462 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
2463 feature only applies on 64 bit x86 architecture platforms that support AES
2464 NI instructions. A defect in the implementation of "multiblock" can cause
2465 OpenSSL's internal write buffer to become incorrectly set to NULL when
2466 using non-blocking IO. Typically, when the user application is using a
2467 socket BIO for writing, this will only result in a failed connection.
2468 However if some other BIO is used then it is likely that a segmentation
2469 fault will be triggered, thus enabling a potential DoS attack.
2471 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
2475 *) Segmentation fault in DTLSv1_listen fix
2477 The DTLSv1_listen function is intended to be stateless and processes the
2478 initial ClientHello from many peers. It is common for user code to loop
2479 over the call to DTLSv1_listen until a valid ClientHello is received with
2480 an associated cookie. A defect in the implementation of DTLSv1_listen means
2481 that state is preserved in the SSL object from one invocation to the next
2482 that can lead to a segmentation fault. Errors processing the initial
2483 ClientHello can trigger this scenario. An example of such an error could be
2484 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
2487 This issue was reported to OpenSSL by Per Allansson.
2491 *) Segmentation fault in ASN1_TYPE_cmp fix
2493 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
2494 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
2495 certificate signature algorithm consistency this can be used to crash any
2496 certificate verification operation and exploited in a DoS attack. Any
2497 application which performs certificate verification is vulnerable including
2498 OpenSSL clients and servers which enable client authentication.
2502 *) Segmentation fault for invalid PSS parameters fix
2504 The signature verification routines will crash with a NULL pointer
2505 dereference if presented with an ASN.1 signature using the RSA PSS
2506 algorithm and invalid parameters. Since these routines are used to verify
2507 certificate signature algorithms this can be used to crash any
2508 certificate verification operation and exploited in a DoS attack. Any
2509 application which performs certificate verification is vulnerable including
2510 OpenSSL clients and servers which enable client authentication.
2512 This issue was was reported to OpenSSL by Brian Carpenter.
2516 *) ASN.1 structure reuse memory corruption fix
2518 Reusing a structure in ASN.1 parsing may allow an attacker to cause
2519 memory corruption via an invalid write. Such reuse is and has been
2520 strongly discouraged and is believed to be rare.
2522 Applications that parse structures containing CHOICE or ANY DEFINED BY
2523 components may be affected. Certificate parsing (d2i_X509 and related
2524 functions) are however not affected. OpenSSL clients and servers are
2529 *) PKCS7 NULL pointer dereferences fix
2531 The PKCS#7 parsing code does not handle missing outer ContentInfo
2532 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
2533 missing content and trigger a NULL pointer dereference on parsing.
2535 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
2536 otherwise parse PKCS#7 structures from untrusted sources are
2537 affected. OpenSSL clients and servers are not affected.
2539 This issue was reported to OpenSSL by Michal Zalewski (Google).
2543 *) DoS via reachable assert in SSLv2 servers fix
2545 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
2546 servers that both support SSLv2 and enable export cipher suites by sending
2547 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
2549 This issue was discovered by Sean Burford (Google) and Emilia Käsper
2550 (OpenSSL development team).
2554 *) Empty CKE with client auth and DHE fix
2556 If client auth is used then a server can seg fault in the event of a DHE
2557 ciphersuite being selected and a zero length ClientKeyExchange message
2558 being sent by the client. This could be exploited in a DoS attack.
2562 *) Handshake with unseeded PRNG fix
2564 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
2565 with an unseeded PRNG. The conditions are:
2566 - The client is on a platform where the PRNG has not been seeded
2567 automatically, and the user has not seeded manually
2568 - A protocol specific client method version has been used (i.e. not
2569 SSL_client_methodv23)
2570 - A ciphersuite is used that does not require additional random data from
2571 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
2573 If the handshake succeeds then the client random that has been used will
2574 have been generated from a PRNG with insufficient entropy and therefore the
2575 output may be predictable.
2577 For example using the following command with an unseeded openssl will
2578 succeed on an unpatched platform:
2580 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
2584 *) Use After Free following d2i_ECPrivatekey error fix
2586 A malformed EC private key file consumed via the d2i_ECPrivateKey function
2587 could cause a use after free condition. This, in turn, could cause a double
2588 free in several private key parsing functions (such as d2i_PrivateKey
2589 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
2590 for applications that receive EC private keys from untrusted
2591 sources. This scenario is considered rare.
2593 This issue was discovered by the BoringSSL project and fixed in their
2598 *) X509_to_X509_REQ NULL pointer deref fix
2600 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
2601 the certificate key is invalid. This function is rarely used in practice.
2603 This issue was discovered by Brian Carpenter.
2607 *) Removed the export ciphers from the DEFAULT ciphers
2610 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
2612 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
2613 ARMv5 through ARMv8, as opposite to "locking" it to single one.
2614 So far those who have to target multiple platforms would compromise
2615 and argue that binary targeting say ARMv5 would still execute on
2616 ARMv8. "Universal" build resolves this compromise by providing
2617 near-optimal performance even on newer platforms.
2620 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
2621 (other platforms pending).
2622 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
2624 *) Add support for the SignedCertificateTimestampList certificate and
2625 OCSP response extensions from RFC6962.
2628 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
2629 for corner cases. (Certain input points at infinity could lead to
2630 bogus results, with non-infinity inputs mapped to infinity too.)
2633 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
2634 This covers AES, SHA256/512 and GHASH. "Initial" means that most
2635 common cases are optimized and there still is room for further
2636 improvements. Vector Permutation AES for Altivec is also added.
2639 *) Add support for little-endian ppc64 Linux target.
2640 [Marcelo Cerri (IBM)]
2642 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
2643 SHA1, SHA256 and GHASH. "Initial" means that most common cases
2644 are optimized and there still is room for further improvements.
2645 Both 32- and 64-bit modes are supported.
2646 [Andy Polyakov, Ard Biesheuvel (Linaro)]
2648 *) Improved ARMv7 NEON support.
2651 *) Support for SPARC Architecture 2011 crypto extensions, first
2652 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
2653 SHA256/512, MD5, GHASH and modular exponentiation.
2654 [Andy Polyakov, David Miller]
2656 *) Accelerated modular exponentiation for Intel processors, a.k.a.
2658 [Shay Gueron & Vlad Krasnov (Intel Corp)]
2660 *) Support for new and upcoming Intel processors, including AVX2,
2661 BMI and SHA ISA extensions. This includes additional "stitched"
2662 implementations, AESNI-SHA256 and GCM, and multi-buffer support
2665 This work was sponsored by Intel Corp.
2668 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
2669 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
2670 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
2673 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2674 this fixes a limitation in previous versions of OpenSSL.
2677 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2678 MGF1 digest and OAEP label.
2681 *) Add EVP support for key wrapping algorithms, to avoid problems with
2682 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2683 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2684 algorithms and include tests cases.
2687 *) Add functions to allocate and set the fields of an ECDSA_METHOD
2689 [Douglas E. Engert, Steve Henson]
2691 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
2692 difference in days and seconds between two tm or ASN1_TIME structures.
2695 *) Add -rev test option to s_server to just reverse order of characters
2696 received by client and send back to server. Also prints an abbreviated
2697 summary of the connection parameters.
2700 *) New option -brief for s_client and s_server to print out a brief summary
2701 of connection parameters.
2704 *) Add callbacks for arbitrary TLS extensions.
2705 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
2707 *) New option -crl_download in several openssl utilities to download CRLs
2708 from CRLDP extension in certificates.
2711 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
2714 *) New function X509_CRL_diff to generate a delta CRL from the difference
2715 of two full CRLs. Add support to "crl" utility.
2718 *) New functions to set lookup_crls function and to retrieve
2719 X509_STORE from X509_STORE_CTX.
2722 *) Print out deprecated issuer and subject unique ID fields in
2726 *) Extend OCSP I/O functions so they can be used for simple general purpose
2727 HTTP as well as OCSP. New wrapper function which can be used to download
2728 CRLs using the OCSP API.
2731 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
2734 *) SSL_CONF* functions. These provide a common framework for application
2735 configuration using configuration files or command lines.
2738 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
2739 message callback and prints the results. Needs compile time option
2740 "enable-ssl-trace". New options to s_client and s_server to enable
2744 *) New ctrl and macro to retrieve supported points extensions.
2745 Print out extension in s_server and s_client.
2748 *) New functions to retrieve certificate signature and signature
2752 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
2756 *) New Suite B modes for TLS code. These use and enforce the requirements
2757 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
2758 only use Suite B curves. The Suite B modes can be set by using the
2759 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
2762 *) New chain verification flags for Suite B levels of security. Check
2763 algorithms are acceptable when flags are set in X509_verify_cert.
2766 *) Make tls1_check_chain return a set of flags indicating checks passed
2767 by a certificate chain. Add additional tests to handle client
2768 certificates: checks for matching certificate type and issuer name
2772 *) If an attempt is made to use a signature algorithm not in the peer
2773 preference list abort the handshake. If client has no suitable
2774 signature algorithms in response to a certificate request do not
2775 use the certificate.
2778 *) If server EC tmp key is not in client preference list abort handshake.
2781 *) Add support for certificate stores in CERT structure. This makes it
2782 possible to have different stores per SSL structure or one store in
2783 the parent SSL_CTX. Include distinct stores for certificate chain
2784 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
2785 to build and store a certificate chain in CERT structure: returning
2786 an error if the chain cannot be built: this will allow applications
2787 to test if a chain is correctly configured.
2789 Note: if the CERT based stores are not set then the parent SSL_CTX
2790 store is used to retain compatibility with existing behaviour.
2794 *) New function ssl_set_client_disabled to set a ciphersuite disabled
2795 mask based on the current session, check mask when sending client
2796 hello and checking the requested ciphersuite.
2799 *) New ctrls to retrieve and set certificate types in a certificate
2800 request message. Print out received values in s_client. If certificate
2801 types is not set with custom values set sensible values based on
2802 supported signature algorithms.
2805 *) Support for distinct client and server supported signature algorithms.
2808 *) Add certificate callback. If set this is called whenever a certificate
2809 is required by client or server. An application can decide which
2810 certificate chain to present based on arbitrary criteria: for example
2811 supported signature algorithms. Add very simple example to s_server.
2812 This fixes many of the problems and restrictions of the existing client
2813 certificate callback: for example you can now clear an existing
2814 certificate and specify the whole chain.
2817 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
2818 the certificate can be used for (if anything). Set valid_flags field
2819 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
2820 to have similar checks in it.
2822 Add new "cert_flags" field to CERT structure and include a "strict mode".
2823 This enforces some TLS certificate requirements (such as only permitting
2824 certificate signature algorithms contained in the supported algorithms
2825 extension) which some implementations ignore: this option should be used
2826 with caution as it could cause interoperability issues.
2829 *) Update and tidy signature algorithm extension processing. Work out
2830 shared signature algorithms based on preferences and peer algorithms
2831 and print them out in s_client and s_server. Abort handshake if no
2832 shared signature algorithms.
2835 *) Add new functions to allow customised supported signature algorithms
2836 for SSL and SSL_CTX structures. Add options to s_client and s_server
2840 *) New function SSL_certs_clear() to delete all references to certificates
2841 from an SSL structure. Before this once a certificate had been added
2842 it couldn't be removed.
2845 *) Integrate hostname, email address and IP address checking with certificate
2846 verification. New verify options supporting checking in openssl utility.
2849 *) Fixes and wildcard matching support to hostname and email checking
2850 functions. Add manual page.
2851 [Florian Weimer (Red Hat Product Security Team)]
2853 *) New functions to check a hostname email or IP address against a
2854 certificate. Add options x509 utility to print results of checks against
2858 *) Fix OCSP checking.
2859 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
2861 *) Initial experimental support for explicitly trusted non-root CAs.
2862 OpenSSL still tries to build a complete chain to a root but if an
2863 intermediate CA has a trust setting included that is used. The first
2864 setting is used: whether to trust (e.g., -addtrust option to the x509
2868 *) Add -trusted_first option which attempts to find certificates in the
2869 trusted store even if an untrusted chain is also supplied.
2872 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
2873 platform support for Linux and Android.
2876 *) Support for linux-x32, ILP32 environment in x86_64 framework.
2879 *) Experimental multi-implementation support for FIPS capable OpenSSL.
2880 When in FIPS mode the approved implementations are used as normal,
2881 when not in FIPS mode the internal unapproved versions are used instead.
2882 This means that the FIPS capable OpenSSL isn't forced to use the
2883 (often lower performance) FIPS implementations outside FIPS mode.
2886 *) Transparently support X9.42 DH parameters when calling
2887 PEM_read_bio_DHparameters. This means existing applications can handle
2888 the new parameter format automatically.
2891 *) Initial experimental support for X9.42 DH parameter format: mainly
2892 to support use of 'q' parameter for RFC5114 parameters.
2895 *) Add DH parameters from RFC5114 including test data to dhtest.
2898 *) Support for automatic EC temporary key parameter selection. If enabled
2899 the most preferred EC parameters are automatically used instead of
2900 hardcoded fixed parameters. Now a server just has to call:
2901 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
2902 support ECDH and use the most appropriate parameters.
2905 *) Enhance and tidy EC curve and point format TLS extension code. Use
2906 static structures instead of allocation if default values are used.
2907 New ctrls to set curves we wish to support and to retrieve shared curves.
2908 Print out shared curves in s_server. New options to s_server and s_client
2909 to set list of supported curves.
2912 *) New ctrls to retrieve supported signature algorithms and
2913 supported curve values as an array of NIDs. Extend openssl utility
2914 to print out received values.
2917 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
2918 between NIDs and the more common NIST names such as "P-256". Enhance
2919 ecparam utility and ECC method to recognise the NIST names for curves.
2922 *) Enhance SSL/TLS certificate chain handling to support different
2923 chains for each certificate instead of one chain in the parent SSL_CTX.
2926 *) Support for fixed DH ciphersuite client authentication: where both
2927 server and client use DH certificates with common parameters.
2930 *) Support for fixed DH ciphersuites: those requiring DH server
2934 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
2936 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
2937 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
2938 X509_CINF_get_signature were reverted post internal team review.
2940 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
2942 *) Build fixes for the Windows and OpenVMS platforms
2943 [Matt Caswell and Richard Levitte]
2945 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
2947 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
2948 message can cause a segmentation fault in OpenSSL due to a NULL pointer
2949 dereference. This could lead to a Denial Of Service attack. Thanks to
2950 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
2954 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
2955 dtls1_buffer_record function under certain conditions. In particular this
2956 could occur if an attacker sent repeated DTLS records with the same
2957 sequence number but for the next epoch. The memory leak could be exploited
2958 by an attacker in a Denial of Service attack through memory exhaustion.
2959 Thanks to Chris Mueller for reporting this issue.
2963 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
2964 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
2965 method would be set to NULL which could later result in a NULL pointer
2966 dereference. Thanks to Frank Schmirler for reporting this issue.
2970 *) Abort handshake if server key exchange message is omitted for ephemeral
2973 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
2974 reporting this issue.
2978 *) Remove non-export ephemeral RSA code on client and server. This code
2979 violated the TLS standard by allowing the use of temporary RSA keys in
2980 non-export ciphersuites and could be used by a server to effectively
2981 downgrade the RSA key length used to a value smaller than the server
2982 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
2983 INRIA or reporting this issue.
2987 *) Fixed issue where DH client certificates are accepted without verification.
2988 An OpenSSL server will accept a DH certificate for client authentication
2989 without the certificate verify message. This effectively allows a client to
2990 authenticate without the use of a private key. This only affects servers
2991 which trust a client certificate authority which issues certificates
2992 containing DH keys: these are extremely rare and hardly ever encountered.
2993 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
2998 *) Ensure that the session ID context of an SSL is updated when its
2999 SSL_CTX is updated via SSL_set_SSL_CTX.
3001 The session ID context is typically set from the parent SSL_CTX,
3002 and can vary with the CTX.
3005 *) Fix various certificate fingerprint issues.
3007 By using non-DER or invalid encodings outside the signed portion of a
3008 certificate the fingerprint can be changed without breaking the signature.
3009 Although no details of the signed portion of the certificate can be changed
3010 this can cause problems with some applications: e.g. those using the
3011 certificate fingerprint for blacklists.
3013 1. Reject signatures with non zero unused bits.
3015 If the BIT STRING containing the signature has non zero unused bits reject
3016 the signature. All current signature algorithms require zero unused bits.
3018 2. Check certificate algorithm consistency.
3020 Check the AlgorithmIdentifier inside TBS matches the one in the
3021 certificate signature. NB: this will result in signature failure
3022 errors for some broken certificates.
3024 Thanks to Konrad Kraszewski from Google for reporting this issue.
3026 3. Check DSA/ECDSA signatures use DER.
3028 Re-encode DSA/ECDSA signatures and compare with the original received
3029 signature. Return an error if there is a mismatch.
3031 This will reject various cases including garbage after signature
3032 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
3033 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
3034 (negative or with leading zeroes).
3036 Further analysis was conducted and fixes were developed by Stephen Henson
3037 of the OpenSSL core team.
3042 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
3043 results on some platforms, including x86_64. This bug occurs at random
3044 with a very low probability, and is not known to be exploitable in any
3045 way, though its exact impact is difficult to determine. Thanks to Pieter
3046 Wuille (Blockstream) who reported this issue and also suggested an initial
3047 fix. Further analysis was conducted by the OpenSSL development team and
3048 Adam Langley of Google. The final fix was developed by Andy Polyakov of
3049 the OpenSSL core team.
3053 *) Do not resume sessions on the server if the negotiated protocol
3054 version does not match the session's version. Resuming with a different
3055 version, while not strictly forbidden by the RFC, is of questionable
3056 sanity and breaks all known clients.
3057 [David Benjamin, Emilia Käsper]
3059 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
3060 early CCS messages during renegotiation. (Note that because
3061 renegotiation is encrypted, this early CCS was not exploitable.)
3064 *) Tighten client-side session ticket handling during renegotiation:
3065 ensure that the client only accepts a session ticket if the server sends
3066 the extension anew in the ServerHello. Previously, a TLS client would
3067 reuse the old extension state and thus accept a session ticket if one was
3068 announced in the initial ServerHello.
3070 Similarly, ensure that the client requires a session ticket if one
3071 was advertised in the ServerHello. Previously, a TLS client would
3072 ignore a missing NewSessionTicket message.
3075 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
3077 *) SRTP Memory Leak.
3079 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
3080 sends a carefully crafted handshake message, to cause OpenSSL to fail
3081 to free up to 64k of memory causing a memory leak. This could be
3082 exploited in a Denial Of Service attack. This issue affects OpenSSL
3083 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
3084 whether SRTP is used or configured. Implementations of OpenSSL that
3085 have been compiled with OPENSSL_NO_SRTP defined are not affected.
3087 The fix was developed by the OpenSSL team.
3091 *) Session Ticket Memory Leak.
3093 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
3094 integrity of that ticket is first verified. In the event of a session
3095 ticket integrity check failing, OpenSSL will fail to free memory
3096 causing a memory leak. By sending a large number of invalid session
3097 tickets an attacker could exploit this issue in a Denial Of Service
3102 *) Build option no-ssl3 is incomplete.
3104 When OpenSSL is configured with "no-ssl3" as a build option, servers
3105 could accept and complete a SSL 3.0 handshake, and clients could be
3106 configured to send them.
3108 [Akamai and the OpenSSL team]
3110 *) Add support for TLS_FALLBACK_SCSV.
3111 Client applications doing fallback retries should call
3112 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
3114 [Adam Langley, Bodo Moeller]
3116 *) Add additional DigestInfo checks.
3118 Re-encode DigestInto in DER and check against the original when
3119 verifying RSA signature: this will reject any improperly encoded
3120 DigestInfo structures.
3122 Note: this is a precautionary measure and no attacks are currently known.
3126 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
3128 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
3129 SRP code can be overrun an internal buffer. Add sanity check that
3130 g, A, B < N to SRP code.
3132 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
3133 Group for discovering this issue.
3137 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
3138 TLS 1.0 instead of higher protocol versions when the ClientHello message
3139 is badly fragmented. This allows a man-in-the-middle attacker to force a
3140 downgrade to TLS 1.0 even if both the server and the client support a
3141 higher protocol version, by modifying the client's TLS records.
3143 Thanks to David Benjamin and Adam Langley (Google) for discovering and
3144 researching this issue.
3148 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
3149 to a denial of service attack. A malicious server can crash the client
3150 with a null pointer dereference (read) by specifying an anonymous (EC)DH
3151 ciphersuite and sending carefully crafted handshake messages.
3153 Thanks to Felix Gröbert (Google) for discovering and researching this
3158 *) By sending carefully crafted DTLS packets an attacker could cause openssl
3159 to leak memory. This can be exploited through a Denial of Service attack.
3160 Thanks to Adam Langley for discovering and researching this issue.
3164 *) An attacker can force openssl to consume large amounts of memory whilst
3165 processing DTLS handshake messages. This can be exploited through a
3166 Denial of Service attack.
3167 Thanks to Adam Langley for discovering and researching this issue.
3171 *) An attacker can force an error condition which causes openssl to crash
3172 whilst processing DTLS packets due to memory being freed twice. This
3173 can be exploited through a Denial of Service attack.
3174 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
3179 *) If a multithreaded client connects to a malicious server using a resumed
3180 session and the server sends an ec point format extension it could write
3181 up to 255 bytes to freed memory.
3183 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
3188 *) A malicious server can crash an OpenSSL client with a null pointer
3189 dereference (read) by specifying an SRP ciphersuite even though it was not
3190 properly negotiated with the client. This can be exploited through a
3191 Denial of Service attack.
3193 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
3194 discovering and researching this issue.
3198 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
3199 X509_name_oneline, X509_name_print_ex et al. to leak some information
3200 from the stack. Applications may be affected if they echo pretty printing
3201 output to the attacker.
3203 Thanks to Ivan Fratric (Google) for discovering this issue.
3205 [Emilia Käsper, and Steve Henson]
3207 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3208 for corner cases. (Certain input points at infinity could lead to
3209 bogus results, with non-infinity inputs mapped to infinity too.)
3212 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
3214 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
3215 handshake can force the use of weak keying material in OpenSSL
3216 SSL/TLS clients and servers.
3218 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
3219 researching this issue. (CVE-2014-0224)
3220 [KIKUCHI Masashi, Steve Henson]
3222 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
3223 OpenSSL DTLS client the code can be made to recurse eventually crashing
3226 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
3228 [Imre Rad, Steve Henson]
3230 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
3231 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
3232 client or server. This is potentially exploitable to run arbitrary
3233 code on a vulnerable client or server.
3235 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
3236 [Jüri Aedla, Steve Henson]
3238 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
3239 are subject to a denial of service attack.
3241 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
3242 this issue. (CVE-2014-3470)
3243 [Felix Gröbert, Ivan Fratric, Steve Henson]
3245 *) Harmonize version and its documentation. -f flag is used to display
3247 [mancha <mancha1@zoho.com>]
3249 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
3250 in i2d_ECPrivateKey.
3251 [mancha <mancha1@zoho.com>]
3253 *) Fix some double frees. These are not thought to be exploitable.
3254 [mancha <mancha1@zoho.com>]
3256 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
3258 *) A missing bounds check in the handling of the TLS heartbeat extension
3259 can be used to reveal up to 64k of memory to a connected client or
3262 Thanks for Neel Mehta of Google Security for discovering this bug and to
3263 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
3264 preparing the fix (CVE-2014-0160)
3265 [Adam Langley, Bodo Moeller]
3267 *) Fix for the attack described in the paper "Recovering OpenSSL
3268 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
3269 by Yuval Yarom and Naomi Benger. Details can be obtained from:
3270 http://eprint.iacr.org/2014/140
3272 Thanks to Yuval Yarom and Naomi Benger for discovering this
3273 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
3274 [Yuval Yarom and Naomi Benger]
3276 *) TLS pad extension: draft-agl-tls-padding-03
3278 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
3279 TLS client Hello record length value would otherwise be > 255 and
3280 less that 512 pad with a dummy extension containing zeroes so it
3281 is at least 512 bytes long.
3283 [Adam Langley, Steve Henson]
3285 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
3287 *) Fix for TLS record tampering bug. A carefully crafted invalid
3288 handshake could crash OpenSSL with a NULL pointer exception.
3289 Thanks to Anton Johansson for reporting this issues.
3292 *) Keep original DTLS digest and encryption contexts in retransmission
3293 structures so we can use the previous session parameters if they need
3294 to be resent. (CVE-2013-6450)
3297 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
3298 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
3299 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
3300 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
3301 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
3302 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
3303 [Rob Stradling, Adam Langley]
3305 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
3307 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
3308 supporting platforms or when small records were transferred.
3309 [Andy Polyakov, Steve Henson]
3311 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
3313 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
3315 This addresses the flaw in CBC record processing discovered by
3316 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
3317 at: http://www.isg.rhul.ac.uk/tls/
3319 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3320 Security Group at Royal Holloway, University of London
3321 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
3322 Emilia Käsper for the initial patch.
3324 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
3326 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
3327 ciphersuites which can be exploited in a denial of service attack.
3328 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
3329 and detecting this bug and to Wolfgang Ettlinger
3330 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
3334 *) Return an error when checking OCSP signatures when key is NULL.
3335 This fixes a DoS attack. (CVE-2013-0166)
3338 *) Make openssl verify return errors.
3339 [Chris Palmer <palmer@google.com> and Ben Laurie]
3341 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
3342 the right response is stapled. Also change SSL_get_certificate()
3343 so it returns the certificate actually sent.
3344 See http://rt.openssl.org/Ticket/Display.html?id=2836.
3345 [Rob Stradling <rob.stradling@comodo.com>]
3347 *) Fix possible deadlock when decoding public keys.
3350 *) Don't use TLS 1.0 record version number in initial client hello
3354 Changes between 1.0.1b and 1.0.1c [10 May 2012]
3356 *) Sanity check record length before skipping explicit IV in TLS
3357 1.2, 1.1 and DTLS to fix DoS attack.
3359 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
3360 fuzzing as a service testing platform.
3364 *) Initialise tkeylen properly when encrypting CMS messages.
3365 Thanks to Solar Designer of Openwall for reporting this issue.
3368 *) In FIPS mode don't try to use composite ciphers as they are not
3372 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
3374 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
3375 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
3376 mean any application compiled against OpenSSL 1.0.0 headers setting
3377 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
3378 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
3379 0x10000000L Any application which was previously compiled against
3380 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
3381 will need to be recompiled as a result. Letting be results in
3382 inability to disable specifically TLS 1.1 and in client context,
3383 in unlike event, limit maximum offered version to TLS 1.0 [see below].
3386 *) In order to ensure interoperability SSL_OP_NO_protocolX does not
3387 disable just protocol X, but all protocols above X *if* there are
3388 protocols *below* X still enabled. In more practical terms it means
3389 that if application wants to disable TLS1.0 in favor of TLS1.1 and
3390 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
3391 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
3395 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
3397 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
3398 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
3399 in CRYPTO_realloc_clean.
3401 Thanks to Tavis Ormandy, Google Security Team, for discovering this
3402 issue and to Adam Langley <agl@chromium.org> for fixing it.
3404 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
3406 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
3409 *) Workarounds for some broken servers that "hang" if a client hello
3410 record length exceeds 255 bytes.
3412 1. Do not use record version number > TLS 1.0 in initial client
3413 hello: some (but not all) hanging servers will now work.
3414 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
3415 the number of ciphers sent in the client hello. This should be
3416 set to an even number, such as 50, for example by passing:
3417 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
3418 Most broken servers should now work.
3419 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
3420 TLS 1.2 client support entirely.
3423 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
3426 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
3428 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
3429 STRING form instead of a DigestInfo.
3432 *) The format used for MDC2 RSA signatures is inconsistent between EVP
3433 and the RSA_sign/RSA_verify functions. This was made more apparent when
3434 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
3435 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
3436 the correct format in RSA_verify so both forms transparently work.
3439 *) Some servers which support TLS 1.0 can choke if we initially indicate
3440 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
3441 encrypted premaster secret. As a workaround use the maximum permitted
3442 client version in client hello, this should keep such servers happy
3443 and still work with previous versions of OpenSSL.
3446 *) Add support for TLS/DTLS heartbeats.
3447 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3449 *) Add support for SCTP.
3450 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3452 *) Improved PRNG seeding for VOS.
3453 [Paul Green <Paul.Green@stratus.com>]
3455 *) Extensive assembler packs updates, most notably:
3457 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
3458 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
3459 - x86_64: bit-sliced AES implementation;
3460 - ARM: NEON support, contemporary platforms optimizations;
3461 - s390x: z196 support;
3462 - *: GHASH and GF(2^m) multiplication implementations;
3466 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
3467 (removal of unnecessary code)
3468 [Peter Sylvester <peter.sylvester@edelweb.fr>]
3470 *) Add TLS key material exporter from RFC 5705.
3473 *) Add DTLS-SRTP negotiation from RFC 5764.
3476 *) Add Next Protocol Negotiation,
3477 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
3478 disabled with a no-npn flag to config or Configure. Code donated
3480 [Adam Langley <agl@google.com> and Ben Laurie]
3482 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
3483 NIST-P256, NIST-P521, with constant-time single point multiplication on
3484 typical inputs. Compiler support for the nonstandard type __uint128_t is
3485 required to use this (present in gcc 4.4 and later, for 64-bit builds).
3486 Code made available under Apache License version 2.0.
3488 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
3489 line to include this in your build of OpenSSL, and run "make depend" (or
3490 "make update"). This enables the following EC_METHODs:
3492 EC_GFp_nistp224_method()
3493 EC_GFp_nistp256_method()
3494 EC_GFp_nistp521_method()
3496 EC_GROUP_new_by_curve_name() will automatically use these (while
3497 EC_GROUP_new_curve_GFp() currently prefers the more flexible
3499 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
3501 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
3502 all platforms. Move ssize_t definition from e_os.h to the public
3503 header file e_os2.h as it now appears in public header file cms.h
3506 *) New -sigopt option to the ca, req and x509 utilities. Additional
3507 signature parameters can be passed using this option and in
3511 *) Add RSA PSS signing function. This will generate and set the
3512 appropriate AlgorithmIdentifiers for PSS based on those in the
3513 corresponding EVP_MD_CTX structure. No application support yet.
3516 *) Support for companion algorithm specific ASN1 signing routines.
3517 New function ASN1_item_sign_ctx() signs a pre-initialised
3518 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
3519 the appropriate parameters.
3522 *) Add new algorithm specific ASN1 verification initialisation function
3523 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
3524 handling will be the same no matter what EVP_PKEY_METHOD is used.
3525 Add a PSS handler to support verification of PSS signatures: checked
3526 against a number of sample certificates.
3529 *) Add signature printing for PSS. Add PSS OIDs.
3530 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
3532 *) Add algorithm specific signature printing. An individual ASN1 method
3533 can now print out signatures instead of the standard hex dump.
3535 More complex signatures (e.g. PSS) can print out more meaningful
3536 information. Include DSA version that prints out the signature
3540 *) Password based recipient info support for CMS library: implementing
3544 *) Split password based encryption into PBES2 and PBKDF2 functions. This
3545 neatly separates the code into cipher and PBE sections and is required
3546 for some algorithms that split PBES2 into separate pieces (such as
3547 password based CMS).
3550 *) Session-handling fixes:
3551 - Fix handling of connections that are resuming with a session ID,
3552 but also support Session Tickets.
3553 - Fix a bug that suppressed issuing of a new ticket if the client
3554 presented a ticket with an expired session.
3555 - Try to set the ticket lifetime hint to something reasonable.
3556 - Make tickets shorter by excluding irrelevant information.
3557 - On the client side, don't ignore renewed tickets.
3558 [Adam Langley, Bodo Moeller (Google)]
3560 *) Fix PSK session representation.
3563 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
3565 This work was sponsored by Intel.
3568 *) Add GCM support to TLS library. Some custom code is needed to split
3569 the IV between the fixed (from PRF) and explicit (from TLS record)
3570 portions. This adds all GCM ciphersuites supported by RFC5288 and
3571 RFC5289. Generalise some AES* cipherstrings to include GCM and
3572 add a special AESGCM string for GCM only.
3575 *) Expand range of ctrls for AES GCM. Permit setting invocation
3576 field on decrypt and retrieval of invocation field only on encrypt.
3579 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
3580 As required by RFC5289 these ciphersuites cannot be used if for
3581 versions of TLS earlier than 1.2.
3584 *) For FIPS capable OpenSSL interpret a NULL default public key method
3585 as unset and return the appropriate default but do *not* set the default.
3586 This means we can return the appropriate method in applications that
3587 switch between FIPS and non-FIPS modes.
3590 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
3591 ENGINE is used then we cannot handle that in the FIPS module so we
3592 keep original code iff non-FIPS operations are allowed.
3595 *) Add -attime option to openssl utilities.
3596 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
3598 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
3601 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
3602 FIPS EC methods unconditionally for now.
3605 *) New build option no-ec2m to disable characteristic 2 code.
3608 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
3609 all cases can be covered as some introduce binary incompatibilities.
3612 *) Redirect RSA operations to FIPS module including keygen,
3613 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
3616 *) Add similar low level API blocking to ciphers.
3619 *) Low level digest APIs are not approved in FIPS mode: any attempt
3620 to use these will cause a fatal error. Applications that *really* want
3621 to use them can use the private_* version instead.
3624 *) Redirect cipher operations to FIPS module for FIPS builds.
3627 *) Redirect digest operations to FIPS module for FIPS builds.
3630 *) Update build system to add "fips" flag which will link in fipscanister.o
3631 for static and shared library builds embedding a signature if needed.
3634 *) Output TLS supported curves in preference order instead of numerical
3635 order. This is currently hardcoded for the highest order curves first.
3636 This should be configurable so applications can judge speed vs strength.
3639 *) Add TLS v1.2 server support for client authentication.
3642 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
3646 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
3647 FIPS modules versions.
3650 *) Add TLS v1.2 client side support for client authentication. Keep cache
3651 of handshake records longer as we don't know the hash algorithm to use
3652 until after the certificate request message is received.
3655 *) Initial TLS v1.2 client support. Add a default signature algorithms
3656 extension including all the algorithms we support. Parse new signature
3657 format in client key exchange. Relax some ECC signing restrictions for
3658 TLS v1.2 as indicated in RFC5246.
3661 *) Add server support for TLS v1.2 signature algorithms extension. Switch
3662 to new signature format when needed using client digest preference.
3663 All server ciphersuites should now work correctly in TLS v1.2. No client
3664 support yet and no support for client certificates.
3667 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
3668 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
3669 ciphersuites. At present only RSA key exchange ciphersuites work with
3670 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
3671 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
3672 and version checking.
3675 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
3676 with this defined it will not be affected by any changes to ssl internal
3677 structures. Add several utility functions to allow openssl application
3678 to work with OPENSSL_NO_SSL_INTERN defined.
3681 *) A long standing patch to add support for SRP from EdelWeb (Peter
3682 Sylvester and Christophe Renou) was integrated.
3683 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
3684 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
3687 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
3690 *) Permit abbreviated handshakes when renegotiating using the function
3691 SSL_renegotiate_abbreviated().
3692 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3694 *) Add call to ENGINE_register_all_complete() to
3695 ENGINE_load_builtin_engines(), so some implementations get used
3696 automatically instead of needing explicit application support.
3699 *) Add support for TLS key exporter as described in RFC5705.
3700 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
3702 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
3703 a few changes are required:
3705 Add SSL_OP_NO_TLSv1_1 flag.
3706 Add TLSv1_1 methods.
3707 Update version checking logic to handle version 1.1.
3708 Add explicit IV handling (ported from DTLS code).
3709 Add command line options to s_client/s_server.
3712 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
3714 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
3715 in CMS and PKCS7 code. When RSA decryption fails use a random key for
3716 content decryption and always return the same error. Note: this attack
3717 needs on average 2^20 messages so it only affects automated senders. The
3718 old behaviour can be re-enabled in the CMS code by setting the
3719 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
3720 an MMA defence is not necessary.
3721 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
3722 this issue. (CVE-2012-0884)
3725 *) Fix CVE-2011-4619: make sure we really are receiving a
3726 client hello before rejecting multiple SGC restarts. Thanks to
3727 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
3730 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
3732 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
3733 Thanks to Antonio Martin, Enterprise Secure Access Research and
3734 Development, Cisco Systems, Inc. for discovering this bug and
3735 preparing a fix. (CVE-2012-0050)
3738 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
3740 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
3741 of the Vaudenay padding oracle attack on CBC mode encryption
3742 which enables an efficient plaintext recovery attack against
3743 the OpenSSL implementation of DTLS. Their attack exploits timing
3744 differences arising during decryption processing. A research
3745 paper describing this attack can be found at:
3746 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
3747 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3748 Security Group at Royal Holloway, University of London
3749 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
3750 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
3751 for preparing the fix. (CVE-2011-4108)
3752 [Robin Seggelmann, Michael Tuexen]
3754 *) Clear bytes used for block padding of SSL 3.0 records.
3756 [Adam Langley (Google)]
3758 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
3759 Kadianakis <desnacked@gmail.com> for discovering this issue and
3760 Adam Langley for preparing the fix. (CVE-2011-4619)
3761 [Adam Langley (Google)]
3763 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
3764 [Andrey Kulikov <amdeich@gmail.com>]
3766 *) Prevent malformed RFC3779 data triggering an assertion failure.
3767 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
3768 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
3769 [Rob Austein <sra@hactrn.net>]
3771 *) Improved PRNG seeding for VOS.
3772 [Paul Green <Paul.Green@stratus.com>]
3774 *) Fix ssl_ciph.c set-up race.
3775 [Adam Langley (Google)]
3777 *) Fix spurious failures in ecdsatest.c.
3778 [Emilia Käsper (Google)]
3780 *) Fix the BIO_f_buffer() implementation (which was mixing different
3781 interpretations of the '..._len' fields).
3782 [Adam Langley (Google)]
3784 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
3785 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
3786 threads won't reuse the same blinding coefficients.
3788 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
3789 lock to call BN_BLINDING_invert_ex, and avoids one use of
3790 BN_BLINDING_update for each BN_BLINDING structure (previously,
3791 the last update always remained unused).
3792 [Emilia Käsper (Google)]
3794 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
3795 [Bob Buckholz (Google)]
3797 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
3799 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
3800 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
3801 [Kaspar Brand <ossl@velox.ch>]
3803 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
3804 for multi-threaded use of ECDH. (CVE-2011-3210)
3805 [Adam Langley (Google)]
3807 *) Fix x509_name_ex_d2i memory leak on bad inputs.
3810 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
3811 signature public key algorithm by using OID xref utilities instead.
3812 Before this you could only use some ECC ciphersuites with SHA1 only.
3815 *) Add protection against ECDSA timing attacks as mentioned in the paper
3816 by Billy Bob Brumley and Nicola Tuveri, see:
3818 http://eprint.iacr.org/2011/232.pdf
3820 [Billy Bob Brumley and Nicola Tuveri]
3822 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
3824 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
3825 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
3827 *) Fix bug in string printing code: if *any* escaping is enabled we must
3828 escape the escape character (backslash) or the resulting string is
3832 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
3834 *) Disable code workaround for ancient and obsolete Netscape browsers
3835 and servers: an attacker can use it in a ciphersuite downgrade attack.
3836 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
3839 *) Fixed J-PAKE implementation error, originally discovered by
3840 Sebastien Martini, further info and confirmation from Stefan
3841 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
3844 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
3846 *) Fix extension code to avoid race conditions which can result in a buffer
3847 overrun vulnerability: resumed sessions must not be modified as they can
3848 be shared by multiple threads. CVE-2010-3864
3851 *) Fix WIN32 build system to correctly link an ENGINE directory into
3855 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
3857 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
3859 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
3861 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
3863 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
3864 context. The operation can be customised via the ctrl mechanism in
3865 case ENGINEs want to include additional functionality.
3868 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
3871 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
3872 output hashes compatible with older versions of OpenSSL.
3873 [Willy Weisz <weisz@vcpc.univie.ac.at>]
3875 *) Fix compression algorithm handling: if resuming a session use the
3876 compression algorithm of the resumed session instead of determining
3877 it from client hello again. Don't allow server to change algorithm.
3880 *) Add load_crls() function to apps tidying load_certs() too. Add option
3881 to verify utility to allow additional CRLs to be included.
3884 *) Update OCSP request code to permit adding custom headers to the request:
3885 some responders need this.
3888 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
3890 [Julia Lawall <julia@diku.dk>]
3892 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
3893 needlessly dereferenced structures, used obsolete functions and
3894 didn't handle all updated verify codes correctly.
3897 *) Disable MD2 in the default configuration.
3900 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
3901 indicate the initial BIO being pushed or popped. This makes it possible
3902 to determine whether the BIO is the one explicitly called or as a result
3903 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
3904 it handles reference counts correctly and doesn't zero out the I/O bio
3905 when it is not being explicitly popped. WARNING: applications which
3906 included workarounds for the old buggy behaviour will need to be modified
3907 or they could free up already freed BIOs.
3910 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
3911 renaming to all platforms (within the 0.9.8 branch, this was
3912 done conditionally on Netware platforms to avoid a name clash).
3913 [Guenter <lists@gknw.net>]
3915 *) Add ECDHE and PSK support to DTLS.
3916 [Michael Tuexen <tuexen@fh-muenster.de>]
3918 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
3922 *) Add "missing" function EVP_MD_flags() (without this the only way to
3923 retrieve a digest flags is by accessing the structure directly. Update
3924 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
3925 or cipher is registered as in the "from" argument. Print out all
3926 registered digests in the dgst usage message instead of manually
3927 attempting to work them out.
3930 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
3931 this allows the use of compression and extensions. Change default cipher
3932 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
3933 by default unless an application cipher string requests it.
3936 *) Alter match criteria in PKCS12_parse(). It used to try to use local
3937 key ids to find matching certificates and keys but some PKCS#12 files
3938 don't follow the (somewhat unwritten) rules and this strategy fails.
3939 Now just gather all certificates together and the first private key
3940 then look for the first certificate that matches the key.
3943 *) Support use of registered digest and cipher names for dgst and cipher
3944 commands instead of having to add each one as a special case. So now
3951 openssl dgst -sha256 foo
3953 and this works for ENGINE based algorithms too.
3957 *) Update Gost ENGINE to support parameter files.
3958 [Victor B. Wagner <vitus@cryptocom.ru>]
3960 *) Support GeneralizedTime in ca utility.
3961 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
3963 *) Enhance the hash format used for certificate directory links. The new
3964 form uses the canonical encoding (meaning equivalent names will work
3965 even if they aren't identical) and uses SHA1 instead of MD5. This form
3966 is incompatible with the older format and as a result c_rehash should
3967 be used to rebuild symbolic links.
3970 *) Make PKCS#8 the default write format for private keys, replacing the
3971 traditional format. This form is standardised, more secure and doesn't
3972 include an implicit MD5 dependency.
3975 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
3976 committed to OpenSSL should pass this lot as a minimum.
3979 *) Add session ticket override functionality for use by EAP-FAST.
3980 [Jouni Malinen <j@w1.fi>]
3982 *) Modify HMAC functions to return a value. Since these can be implemented
3983 in an ENGINE errors can occur.
3986 *) Type-checked OBJ_bsearch_ex.
3989 *) Type-checked OBJ_bsearch. Also some constification necessitated
3990 by type-checking. Still to come: TXT_DB, bsearch(?),
3991 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
3995 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
3996 seconds to a tm structure directly, instead of going through OS
3997 specific date routines. This avoids any issues with OS routines such
3998 as the year 2038 bug. New *_adj() functions for ASN1 time structures
3999 and X509_time_adj_ex() to cover the extended range. The existing
4000 X509_time_adj() is still usable and will no longer have any date issues.
4003 *) Delta CRL support. New use deltas option which will attempt to locate
4004 and search any appropriate delta CRLs available.
4006 This work was sponsored by Google.
4009 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
4010 code and add additional score elements. Validate alternate CRL paths
4011 as part of the CRL checking and indicate a new error "CRL path validation
4012 error" in this case. Applications wanting additional details can use
4013 the verify callback and check the new "parent" field. If this is not
4014 NULL CRL path validation is taking place. Existing applications won't
4015 see this because it requires extended CRL support which is off by
4018 This work was sponsored by Google.
4021 *) Support for freshest CRL extension.
4023 This work was sponsored by Google.
4026 *) Initial indirect CRL support. Currently only supported in the CRLs
4027 passed directly and not via lookup. Process certificate issuer
4028 CRL entry extension and lookup CRL entries by bother issuer name
4029 and serial number. Check and process CRL issuer entry in IDP extension.
4031 This work was sponsored by Google.
4034 *) Add support for distinct certificate and CRL paths. The CRL issuer
4035 certificate is validated separately in this case. Only enabled if
4036 an extended CRL support flag is set: this flag will enable additional
4037 CRL functionality in future.
4039 This work was sponsored by Google.
4042 *) Add support for policy mappings extension.
4044 This work was sponsored by Google.
4047 *) Fixes to pathlength constraint, self issued certificate handling,
4048 policy processing to align with RFC3280 and PKITS tests.
4050 This work was sponsored by Google.
4053 *) Support for name constraints certificate extension. DN, email, DNS
4054 and URI types are currently supported.
4056 This work was sponsored by Google.
4059 *) To cater for systems that provide a pointer-based thread ID rather
4060 than numeric, deprecate the current numeric thread ID mechanism and
4061 replace it with a structure and associated callback type. This
4062 mechanism allows a numeric "hash" to be extracted from a thread ID in
4063 either case, and on platforms where pointers are larger than 'long',
4064 mixing is done to help ensure the numeric 'hash' is usable even if it
4065 can't be guaranteed unique. The default mechanism is to use "&errno"
4066 as a pointer-based thread ID to distinguish between threads.
4068 Applications that want to provide their own thread IDs should now use
4069 CRYPTO_THREADID_set_callback() to register a callback that will call
4070 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
4072 Note that ERR_remove_state() is now deprecated, because it is tied
4073 to the assumption that thread IDs are numeric. ERR_remove_state(0)
4074 to free the current thread's error state should be replaced by
4075 ERR_remove_thread_state(NULL).
4077 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
4078 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
4079 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
4080 application was previously providing a numeric thread callback that
4081 was inappropriate for distinguishing threads, then uniqueness might
4082 have been obtained with &errno that happened immediately in the
4083 intermediate development versions of OpenSSL; this is no longer the
4084 case, the numeric thread callback will now override the automatic use
4086 [Geoff Thorpe, with help from Bodo Moeller]
4088 *) Initial support for different CRL issuing certificates. This covers a
4089 simple case where the self issued certificates in the chain exist and
4090 the real CRL issuer is higher in the existing chain.
4092 This work was sponsored by Google.
4095 *) Removed effectively defunct crypto/store from the build.
4098 *) Revamp of STACK to provide stronger type-checking. Still to come:
4099 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
4100 ASN1_STRING, CONF_VALUE.
4103 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
4104 RAM on SSL connections. This option can save about 34k per idle SSL.
4107 *) Revamp of LHASH to provide stronger type-checking. Still to come:
4108 STACK, TXT_DB, bsearch, qsort.
4111 *) Initial support for Cryptographic Message Syntax (aka CMS) based
4112 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
4113 support for data, signedData, compressedData, digestedData and
4114 encryptedData, envelopedData types included. Scripts to check against
4115 RFC4134 examples draft and interop and consistency checks of many
4116 content types and variants.
4119 *) Add options to enc utility to support use of zlib compression BIO.
4122 *) Extend mk1mf to support importing of options and assembly language
4123 files from Configure script, currently only included in VC-WIN32.
4124 The assembly language rules can now optionally generate the source
4125 files from the associated perl scripts.
4128 *) Implement remaining functionality needed to support GOST ciphersuites.
4129 Interop testing has been performed using CryptoPro implementations.
4130 [Victor B. Wagner <vitus@cryptocom.ru>]
4132 *) s390x assembler pack.
4135 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
4139 *) Implement Opaque PRF Input TLS extension as specified in
4140 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
4141 official specification yet and no extension type assignment by
4142 IANA exists, this extension (for now) will have to be explicitly
4143 enabled when building OpenSSL by providing the extension number
4144 to use. For example, specify an option
4146 -DTLSEXT_TYPE_opaque_prf_input=0x9527
4148 to the "config" or "Configure" script to enable the extension,
4149 assuming extension number 0x9527 (which is a completely arbitrary
4150 and unofficial assignment based on the MD5 hash of the Internet
4151 Draft). Note that by doing so, you potentially lose
4152 interoperability with other TLS implementations since these might
4153 be using the same extension number for other purposes.
4155 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
4156 opaque PRF input value to use in the handshake. This will create
4157 an internal copy of the length-'len' string at 'src', and will
4158 return non-zero for success.
4160 To get more control and flexibility, provide a callback function
4163 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
4164 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
4168 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
4171 Callback function 'cb' will be called in handshakes, and is
4172 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
4173 Argument 'arg' is for application purposes (the value as given to
4174 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
4175 be provided to the callback function). The callback function
4176 has to return non-zero to report success: usually 1 to use opaque
4177 PRF input just if possible, or 2 to enforce use of the opaque PRF
4178 input. In the latter case, the library will abort the handshake
4179 if opaque PRF input is not successfully negotiated.
4181 Arguments 'peerinput' and 'len' given to the callback function
4182 will always be NULL and 0 in the case of a client. A server will
4183 see the client's opaque PRF input through these variables if
4184 available (NULL and 0 otherwise). Note that if the server
4185 provides an opaque PRF input, the length must be the same as the
4186 length of the client's opaque PRF input.
4188 Note that the callback function will only be called when creating
4189 a new session (session resumption can resume whatever was
4190 previously negotiated), and will not be called in SSL 2.0
4191 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
4192 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
4193 for applications that need to enforce opaque PRF input.
4197 *) Update ssl code to support digests other than SHA1+MD5 for handshake
4200 [Victor B. Wagner <vitus@cryptocom.ru>]
4202 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4203 RFC4507bis. The encrypted ticket format is an encrypted encoded
4204 SSL_SESSION structure, that way new session features are automatically
4207 If a client application caches session in an SSL_SESSION structure
4208 support is transparent because tickets are now stored in the encoded
4211 The SSL_CTX structure automatically generates keys for ticket
4212 protection in servers so again support should be possible
4213 with no application modification.
4215 If a client or server wishes to disable RFC4507 support then the option
4216 SSL_OP_NO_TICKET can be set.
4218 Add a TLS extension debugging callback to allow the contents of any client
4219 or server extensions to be examined.
4221 This work was sponsored by Google.
4224 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
4225 OpenSSL should now compile cleanly on gcc 4.2
4226 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
4228 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
4229 support including streaming MAC support: this is required for GOST
4230 ciphersuite support.
4231 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
4233 *) Add option -stream to use PKCS#7 streaming in smime utility. New
4234 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
4235 to output in BER and PEM format.
4238 *) Experimental support for use of HMAC via EVP_PKEY interface. This
4239 allows HMAC to be handled via the EVP_DigestSign*() interface. The
4240 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
4241 ENGINE support for HMAC keys which are unextractable. New -mac and
4242 -macopt options to dgst utility.
4245 *) New option -sigopt to dgst utility. Update dgst to use
4246 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
4247 alternative signing parameters such as X9.31 or PSS in the dgst
4251 *) Change ssl_cipher_apply_rule(), the internal function that does
4252 the work each time a ciphersuite string requests enabling
4253 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
4254 removing ("!foo+bar") a class of ciphersuites: Now it maintains
4255 the order of disabled ciphersuites such that those ciphersuites
4256 that most recently went from enabled to disabled not only stay
4257 in order with respect to each other, but also have higher priority
4258 than other disabled ciphersuites the next time ciphersuites are
4261 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
4262 the same ciphersuites as with "HIGH" alone, but in a specific
4263 order where the PSK ciphersuites come first (since they are the
4264 most recently disabled ciphersuites when "HIGH" is parsed).
4266 Also, change ssl_create_cipher_list() (using this new
4267 functionality) such that between otherwise identical
4268 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
4272 *) Change ssl_create_cipher_list() so that it automatically
4273 arranges the ciphersuites in reasonable order before starting
4274 to process the rule string. Thus, the definition for "DEFAULT"
4275 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
4276 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
4277 This makes it much easier to arrive at a reasonable default order
4278 in applications for which anonymous ciphers are OK (meaning
4279 that you can't actually use DEFAULT).
4280 [Bodo Moeller; suggested by Victor Duchovni]
4282 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
4283 processing) into multiple integers instead of setting
4284 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
4285 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
4286 (These masks as well as the individual bit definitions are hidden
4287 away into the non-exported interface ssl/ssl_locl.h, so this
4288 change to the definition of the SSL_CIPHER structure shouldn't
4289 affect applications.) This give us more bits for each of these
4290 categories, so there is no longer a need to coagulate AES128 and
4291 AES256 into a single algorithm bit, and to coagulate Camellia128
4292 and Camellia256 into a single algorithm bit, which has led to all
4295 Thus, among other things, the kludge introduced in 0.9.7m and
4296 0.9.8e for masking out AES256 independently of AES128 or masking
4297 out Camellia256 independently of AES256 is not needed here in 0.9.9.
4299 With the change, we also introduce new ciphersuite aliases that
4300 so far were missing: "AES128", "AES256", "CAMELLIA128", and
4304 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
4305 Use the leftmost N bytes of the signature input if the input is
4306 larger than the prime q (with N being the size in bytes of q).
4309 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
4310 it yet and it is largely untested.
4313 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
4316 *) Initial incomplete changes to avoid need for function casts in OpenSSL
4317 some compilers (gcc 4.2 and later) reject their use. Safestack is
4318 reimplemented. Update ASN1 to avoid use of legacy functions.
4321 *) Win32/64 targets are linked with Winsock2.
4324 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
4325 to external functions. This can be used to increase CRL handling
4326 efficiency especially when CRLs are very large by (for example) storing
4327 the CRL revoked certificates in a database.
4330 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
4331 new CRLs added to a directory can be used. New command line option
4332 -verify_return_error to s_client and s_server. This causes real errors
4333 to be returned by the verify callback instead of carrying on no matter
4334 what. This reflects the way a "real world" verify callback would behave.
4337 *) GOST engine, supporting several GOST algorithms and public key formats.
4338 Kindly donated by Cryptocom.
4341 *) Partial support for Issuing Distribution Point CRL extension. CRLs
4342 partitioned by DP are handled but no indirect CRL or reason partitioning
4343 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
4344 selected via a scoring technique which handles IDP and AKID in CRLs.
4347 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
4348 will ultimately be used for all verify operations: this will remove the
4349 X509_STORE dependency on certificate verification and allow alternative
4350 lookup methods. X509_STORE based implementations of these two callbacks.
4353 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
4354 Modify get_crl() to find a valid (unexpired) CRL if possible.
4357 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
4358 this would be called X509_CRL_cmp() but that name is already used by
4359 a function that just compares CRL issuer names. Cache several CRL
4360 extensions in X509_CRL structure and cache CRLDP in X509.
4363 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
4364 this maps equivalent X509_NAME structures into a consistent structure.
4365 Name comparison can then be performed rapidly using memcmp().
4368 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
4372 *) Allow digests to supply their own micalg string for S/MIME type using
4373 the ctrl EVP_MD_CTRL_MICALG.
4376 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
4377 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
4378 ctrl. It can then customise the structure before and/or after signing
4382 *) New function OBJ_add_sigid() to allow application defined signature OIDs
4383 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
4384 to free up any added signature OIDs.
4387 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
4388 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
4389 digest and cipher tables. New options added to openssl utility:
4390 list-message-digest-algorithms and list-cipher-algorithms.
4393 *) Change the array representation of binary polynomials: the list
4394 of degrees of non-zero coefficients is now terminated with -1.
4395 Previously it was terminated with 0, which was also part of the
4396 value; thus, the array representation was not applicable to
4397 polynomials where t^0 has coefficient zero. This change makes
4398 the array representation useful in a more general context.
4401 *) Various modifications and fixes to SSL/TLS cipher string
4402 handling. For ECC, the code now distinguishes between fixed ECDH
4403 with RSA certificates on the one hand and with ECDSA certificates
4404 on the other hand, since these are separate ciphersuites. The
4405 unused code for Fortezza ciphersuites has been removed.
4407 For consistency with EDH, ephemeral ECDH is now called "EECDH"
4408 (not "ECDHE"). For consistency with the code for DH
4409 certificates, use of ECDH certificates is now considered ECDH
4410 authentication, not RSA or ECDSA authentication (the latter is
4411 merely the CA's signing algorithm and not actively used in the
4414 The temporary ciphersuite alias "ECCdraft" is no longer
4415 available, and ECC ciphersuites are no longer excluded from "ALL"
4416 and "DEFAULT". The following aliases now exist for RFC 4492
4417 ciphersuites, most of these by analogy with the DH case:
4419 kECDHr - ECDH cert, signed with RSA
4420 kECDHe - ECDH cert, signed with ECDSA
4421 kECDH - ECDH cert (signed with either RSA or ECDSA)
4422 kEECDH - ephemeral ECDH
4423 ECDH - ECDH cert or ephemeral ECDH
4429 AECDH - anonymous ECDH
4430 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
4434 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
4435 Use correct micalg parameters depending on digest(s) in signed message.
4438 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
4439 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
4442 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
4443 an engine to register a method. Add ENGINE lookups for methods and
4444 functional reference processing.
4447 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
4448 EVP_{Sign,Verify}* which allow an application to customise the signature
4452 *) New -resign option to smime utility. This adds one or more signers
4453 to an existing PKCS#7 signedData structure. Also -md option to use an
4454 alternative message digest algorithm for signing.
4457 *) Tidy up PKCS#7 routines and add new functions to make it easier to
4458 create PKCS7 structures containing multiple signers. Update smime
4459 application to support multiple signers.
4462 *) New -macalg option to pkcs12 utility to allow setting of an alternative
4466 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
4467 Reorganize PBE internals to lookup from a static table using NIDs,
4468 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
4469 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
4470 PRF which will be automatically used with PBES2.
4473 *) Replace the algorithm specific calls to generate keys in "req" with the
4477 *) Update PKCS#7 enveloped data routines to use new API. This is now
4478 supported by any public key method supporting the encrypt operation. A
4479 ctrl is added to allow the public key algorithm to examine or modify
4480 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
4484 *) Add a ctrl to asn1 method to allow a public key algorithm to express
4485 a default digest type to use. In most cases this will be SHA1 but some
4486 algorithms (such as GOST) need to specify an alternative digest. The
4487 return value indicates how strong the preference is 1 means optional and
4488 2 is mandatory (that is it is the only supported type). Modify
4489 ASN1_item_sign() to accept a NULL digest argument to indicate it should
4490 use the default md. Update openssl utilities to use the default digest
4491 type for signing if it is not explicitly indicated.
4494 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
4495 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
4496 signing method from the key type. This effectively removes the link
4497 between digests and public key types.
4500 *) Add an OID cross reference table and utility functions. Its purpose is to
4501 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
4502 rsaEncryption. This will allow some of the algorithm specific hackery
4503 needed to use the correct OID to be removed.
4506 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
4507 structures for PKCS7_sign(). They are now set up by the relevant public
4511 *) Add provisional EC pkey method with support for ECDSA and ECDH.
4514 *) Add support for key derivation (agreement) in the API, DH method and
4518 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
4519 public and private key formats. As a side effect these add additional
4520 command line functionality not previously available: DSA signatures can be
4521 generated and verified using pkeyutl and DH key support and generation in
4526 [Oliver Tappe <zooey@hirschkaefer.de>]
4528 *) New make target "install_html_docs" installs HTML renditions of the
4530 [Oliver Tappe <zooey@hirschkaefer.de>]
4532 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
4533 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
4534 support key and parameter generation and add initial key generation
4535 functionality for RSA.
4538 *) Add functions for main EVP_PKEY_method operations. The undocumented
4539 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
4540 EVP_PKEY_{encrypt,decrypt}_old.
4543 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
4544 key API, doesn't do much yet.
4547 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
4548 public key algorithms. New option to openssl utility:
4549 "list-public-key-algorithms" to print out info.
4552 *) Implement the Supported Elliptic Curves Extension for
4553 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
4556 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
4557 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
4560 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
4561 utilities such as rsa, dsa, dsaparam etc except they process any key
4565 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
4566 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
4567 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
4571 *) Initial support for pluggable public key ASN1.
4572 De-spaghettify the public key ASN1 handling. Move public and private
4573 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
4574 algorithm specific handling to a single module within the relevant
4575 algorithm directory. Add functions to allow (near) opaque processing
4576 of public and private key structures.
4579 *) Implement the Supported Point Formats Extension for
4580 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
4583 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
4584 for the psk identity [hint] and the psk callback functions to the
4585 SSL_SESSION, SSL and SSL_CTX structure.
4588 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
4592 SSL_CTX_use_psk_identity_hint
4593 SSL_get_psk_identity_hint
4594 SSL_get_psk_identity
4595 SSL_use_psk_identity_hint
4597 [Mika Kousa and Pasi Eronen of Nokia Corporation]
4599 *) Add RFC 3161 compliant time stamp request creation, response generation
4600 and response verification functionality.
4601 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
4603 *) Add initial support for TLS extensions, specifically for the server_name
4604 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
4605 have new members for a host name. The SSL data structure has an
4606 additional member SSL_CTX *initial_ctx so that new sessions can be
4607 stored in that context to allow for session resumption, even after the
4608 SSL has been switched to a new SSL_CTX in reaction to a client's
4609 server_name extension.
4611 New functions (subject to change):
4613 SSL_get_servername()
4614 SSL_get_servername_type()
4617 New CTRL codes and macros (subject to change):
4619 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
4620 - SSL_CTX_set_tlsext_servername_callback()
4621 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
4622 - SSL_CTX_set_tlsext_servername_arg()
4623 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
4625 openssl s_client has a new '-servername ...' option.
4627 openssl s_server has new options '-servername_host ...', '-cert2 ...',
4628 '-key2 ...', '-servername_fatal' (subject to change). This allows
4629 testing the HostName extension for a specific single host name ('-cert'
4630 and '-key' remain fallbacks for handshakes without HostName
4631 negotiation). If the unrecognized_name alert has to be sent, this by
4632 default is a warning; it becomes fatal with the '-servername_fatal'
4635 [Peter Sylvester, Remy Allais, Christophe Renou]
4637 *) Whirlpool hash implementation is added.
4640 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
4641 bn(64,32). Because of instruction set limitations it doesn't have
4642 any negative impact on performance. This was done mostly in order
4643 to make it possible to share assembler modules, such as bn_mul_mont
4644 implementations, between 32- and 64-bit builds without hassle.
4647 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
4648 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
4652 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
4653 dedicated Montgomery multiplication procedure, is introduced.
4654 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
4655 "64-bit" performance on certain 32-bit targets.
4658 *) New option SSL_OP_NO_COMP to disable use of compression selectively
4659 in SSL structures. New SSL ctrl to set maximum send fragment size.
4660 Save memory by setting the I/O buffer sizes dynamically instead of
4661 using the maximum available value.
4664 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
4665 in addition to the text details.
4668 *) Very, very preliminary EXPERIMENTAL support for printing of general
4669 ASN1 structures. This currently produces rather ugly output and doesn't
4670 handle several customised structures at all.
4673 *) Integrated support for PVK file format and some related formats such
4674 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
4675 these in the 'rsa' and 'dsa' utilities.
4678 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
4681 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
4682 place for the (very old) "NETSCAPE" format certificates which are now
4683 handled using new ASN1 code equivalents.
4686 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
4687 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
4688 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
4691 *) Modify CRL distribution points extension code to print out previously
4692 unsupported fields. Enhance extension setting code to allow setting of
4696 *) Add print and set support for Issuing Distribution Point CRL extension.
4699 *) Change 'Configure' script to enable Camellia by default.
4702 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
4704 *) When rejecting SSL/TLS records due to an incorrect version number, never
4705 update s->server with a new major version number. As of
4706 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
4707 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
4708 the previous behavior could result in a read attempt at NULL when
4709 receiving specific incorrect SSL/TLS records once record payload
4710 protection is active. (CVE-2010-0740)
4711 [Bodo Moeller, Adam Langley <agl@chromium.org>]
4713 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
4714 could be crashed if the relevant tables were not present (e.g. chrooted).
4715 [Tomas Hoger <thoger@redhat.com>]
4717 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
4719 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
4720 [Martin Olsson, Neel Mehta]
4722 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
4723 accommodate for stack sorting, always a write lock!).
4726 *) On some versions of WIN32 Heap32Next is very slow. This can cause
4727 excessive delays in the RAND_poll(): over a minute. As a workaround
4728 include a time check in the inner Heap32Next loop too.
4731 *) The code that handled flushing of data in SSL/TLS originally used the
4732 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
4733 the problem outlined in PR#1949. The fix suggested there however can
4734 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
4735 of Apache). So instead simplify the code to flush unconditionally.
4736 This should be fine since flushing with no data to flush is a no op.
4739 *) Handle TLS versions 2.0 and later properly and correctly use the
4740 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
4741 off ancient servers have a habit of sticking around for a while...
4744 *) Modify compression code so it frees up structures without using the
4745 ex_data callbacks. This works around a problem where some applications
4746 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
4747 restarting) then use compression (e.g. SSL with compression) later.
4748 This results in significant per-connection memory leaks and
4749 has caused some security issues including CVE-2008-1678 and
4753 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
4754 change when encrypting or decrypting.
4757 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
4758 connect and renegotiate with servers which do not support RI.
4759 Until RI is more widely deployed this option is enabled by default.
4762 *) Add "missing" ssl ctrls to clear options and mode.
4765 *) If client attempts to renegotiate and doesn't support RI respond with
4766 a no_renegotiation alert as required by RFC5746. Some renegotiating
4767 TLS clients will continue a connection gracefully when they receive
4768 the alert. Unfortunately OpenSSL mishandled this alert and would hang
4769 waiting for a server hello which it will never receive. Now we treat a
4770 received no_renegotiation alert as a fatal error. This is because
4771 applications requesting a renegotiation might well expect it to succeed
4772 and would have no code in place to handle the server denying it so the
4773 only safe thing to do is to terminate the connection.
4776 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
4777 peer supports secure renegotiation and 0 otherwise. Print out peer
4778 renegotiation support in s_client/s_server.
4781 *) Replace the highly broken and deprecated SPKAC certification method with
4782 the updated NID creation version. This should correctly handle UTF8.
4785 *) Implement RFC5746. Re-enable renegotiation but require the extension
4786 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
4787 turns out to be a bad idea. It has been replaced by
4788 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
4789 SSL_CTX_set_options(). This is really not recommended unless you
4790 know what you are doing.
4791 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
4793 *) Fixes to stateless session resumption handling. Use initial_ctx when
4794 issuing and attempting to decrypt tickets in case it has changed during
4795 servername handling. Use a non-zero length session ID when attempting
4796 stateless session resumption: this makes it possible to determine if
4797 a resumption has occurred immediately after receiving server hello
4798 (several places in OpenSSL subtly assume this) instead of later in
4802 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
4803 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
4804 fixes for a few places where the return code is not checked
4806 [Julia Lawall <julia@diku.dk>]
4808 *) Add --strict-warnings option to Configure script to include devteam
4809 warnings in other configurations.
4812 *) Add support for --libdir option and LIBDIR variable in makefiles. This
4813 makes it possible to install openssl libraries in locations which
4814 have names other than "lib", for example "/usr/lib64" which some
4816 [Steve Henson, based on patch from Jeremy Utley]
4818 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
4819 X690 8.9.12 and can produce some misleading textual output of OIDs.
4820 [Steve Henson, reported by Dan Kaminsky]
4822 *) Delete MD2 from algorithm tables. This follows the recommendation in
4823 several standards that it is not used in new applications due to
4824 several cryptographic weaknesses. For binary compatibility reasons
4825 the MD2 API is still compiled in by default.
4828 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
4832 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
4833 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
4835 [Guenter <lists@gknw.net>]
4837 *) Fix the server certificate chain building code to use X509_verify_cert(),
4838 it used to have an ad-hoc builder which was unable to cope with anything
4839 other than a simple chain.
4840 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
4842 *) Don't check self signed certificate signatures in X509_verify_cert()
4843 by default (a flag can override this): it just wastes time without
4844 adding any security. As a useful side effect self signed root CAs
4845 with non-FIPS digests are now usable in FIPS mode.
4848 *) In dtls1_process_out_of_seq_message() the check if the current message
4849 is already buffered was missing. For every new message was memory
4850 allocated, allowing an attacker to perform an denial of service attack
4851 with sending out of seq handshake messages until there is no memory
4852 left. Additionally every future message was buffered, even if the
4853 sequence number made no sense and would be part of another handshake.
4854 So only messages with sequence numbers less than 10 in advance will be
4855 buffered. (CVE-2009-1378)
4856 [Robin Seggelmann, discovered by Daniel Mentz]
4858 *) Records are buffered if they arrive with a future epoch to be
4859 processed after finishing the corresponding handshake. There is
4860 currently no limitation to this buffer allowing an attacker to perform
4861 a DOS attack with sending records with future epochs until there is no
4862 memory left. This patch adds the pqueue_size() function to determine
4863 the size of a buffer and limits the record buffer to 100 entries.
4865 [Robin Seggelmann, discovered by Daniel Mentz]
4867 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
4868 parent structure is freed. (CVE-2009-1379)
4871 *) Handle non-blocking I/O properly in SSL_shutdown() call.
4872 [Darryl Miles <darryl-mailinglists@netbauds.net>]
4875 [Ilya O. <vrghost@gmail.com>]
4877 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
4879 *) Disable renegotiation completely - this fixes a severe security
4880 problem (CVE-2009-3555) at the cost of breaking all
4881 renegotiation. Renegotiation can be re-enabled by setting
4882 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
4883 run-time. This is really not recommended unless you know what
4887 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
4889 *) Don't set val to NULL when freeing up structures, it is freed up by
4890 underlying code. If sizeof(void *) > sizeof(long) this can result in
4891 zeroing past the valid field. (CVE-2009-0789)
4892 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
4894 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
4895 checked correctly. This would allow some invalid signed attributes to
4896 appear to verify correctly. (CVE-2009-0591)
4897 [Ivan Nestlerode <inestlerode@us.ibm.com>]
4899 *) Reject UniversalString and BMPString types with invalid lengths. This
4900 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
4901 a legal length. (CVE-2009-0590)
4904 *) Set S/MIME signing as the default purpose rather than setting it
4905 unconditionally. This allows applications to override it at the store
4909 *) Permit restricted recursion of ASN1 strings. This is needed in practice
4910 to handle some structures.
4913 *) Improve efficiency of mem_gets: don't search whole buffer each time
4915 [Jeremy Shapiro <jnshapir@us.ibm.com>]
4917 *) New -hex option for openssl rand.
4920 *) Print out UTF8String and NumericString when parsing ASN1.
4923 *) Support NumericString type for name components.
4926 *) Allow CC in the environment to override the automatically chosen
4927 compiler. Note that nothing is done to ensure flags work with the
4931 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
4933 *) Properly check EVP_VerifyFinal() and similar return values
4935 [Ben Laurie, Bodo Moeller, Google Security Team]
4937 *) Enable TLS extensions by default.
4940 *) Allow the CHIL engine to be loaded, whether the application is
4941 multithreaded or not. (This does not release the developer from the
4942 obligation to set up the dynamic locking callbacks.)
4943 [Sander Temme <sander@temme.net>]
4945 *) Use correct exit code if there is an error in dgst command.
4946 [Steve Henson; problem pointed out by Roland Dirlewanger]
4948 *) Tweak Configure so that you need to say "experimental-jpake" to enable
4949 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
4952 *) Add experimental JPAKE support, including demo authentication in
4953 s_client and s_server.
4956 *) Set the comparison function in v3_addr_canonize().
4957 [Rob Austein <sra@hactrn.net>]
4959 *) Add support for XMPP STARTTLS in s_client.
4960 [Philip Paeps <philip@freebsd.org>]
4962 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
4963 to ensure that even with this option, only ciphersuites in the
4964 server's preference list will be accepted. (Note that the option
4965 applies only when resuming a session, so the earlier behavior was
4966 just about the algorithm choice for symmetric cryptography.)
4969 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
4971 *) Fix NULL pointer dereference if a DTLS server received
4972 ChangeCipherSpec as first record (CVE-2009-1386).
4975 *) Fix a state transition in s3_srvr.c and d1_srvr.c
4976 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
4979 *) The fix in 0.9.8c that supposedly got rid of unsafe
4980 double-checked locking was incomplete for RSA blinding,
4981 addressing just one layer of what turns out to have been
4982 doubly unsafe triple-checked locking.
4984 So now fix this for real by retiring the MONT_HELPER macro
4985 in crypto/rsa/rsa_eay.c.
4987 [Bodo Moeller; problem pointed out by Marius Schilder]
4989 *) Various precautionary measures:
4991 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
4993 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
4994 (NB: This would require knowledge of the secret session ticket key
4995 to exploit, in which case you'd be SOL either way.)
4997 - Change bn_nist.c so that it will properly handle input BIGNUMs
4998 outside the expected range.
5000 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
5003 [Neel Mehta, Bodo Moeller]
5005 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
5006 the load fails. Useful for distros.
5007 [Ben Laurie and the FreeBSD team]
5009 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
5012 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
5015 *) Expand ENGINE to support engine supplied SSL client certificate functions.
5017 This work was sponsored by Logica.
5020 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
5021 keystores. Support for SSL/TLS client authentication too.
5022 Not compiled unless enable-capieng specified to Configure.
5024 This work was sponsored by Logica.
5027 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
5028 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
5029 attribute creation routines such as certificate requests and PKCS#12
5033 Changes between 0.9.8g and 0.9.8h [28 May 2008]
5035 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
5036 handshake which could lead to a client crash as found using the
5037 Codenomicon TLS test suite (CVE-2008-1672)
5038 [Steve Henson, Mark Cox]
5040 *) Fix double free in TLS server name extensions which could lead to
5041 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
5044 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
5046 Clear the error queue to ensure that error entries left from
5047 older function calls do not interfere with the correct operation.
5048 [Lutz Jaenicke, Erik de Castro Lopo]
5050 *) Remove root CA certificates of commercial CAs:
5052 The OpenSSL project does not recommend any specific CA and does not
5053 have any policy with respect to including or excluding any CA.
5054 Therefore it does not make any sense to ship an arbitrary selection
5055 of root CA certificates with the OpenSSL software.
5058 *) RSA OAEP patches to fix two separate invalid memory reads.
5059 The first one involves inputs when 'lzero' is greater than
5060 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
5061 before the beginning of from). The second one involves inputs where
5062 the 'db' section contains nothing but zeroes (there is a one-byte
5063 invalid read after the end of 'db').
5064 [Ivan Nestlerode <inestlerode@us.ibm.com>]
5066 *) Partial backport from 0.9.9-dev:
5068 Introduce bn_mul_mont (dedicated Montgomery multiplication
5069 procedure) as a candidate for BIGNUM assembler implementation.
5070 While 0.9.9-dev uses assembler for various architectures, only
5071 x86_64 is available by default here in the 0.9.8 branch, and
5072 32-bit x86 is available through a compile-time setting.
5074 To try the 32-bit x86 assembler implementation, use Configure
5075 option "enable-montasm" (which exists only for this backport).
5077 As "enable-montasm" for 32-bit x86 disclaims code stability
5078 anyway, in this constellation we activate additional code
5079 backported from 0.9.9-dev for further performance improvements,
5080 namely BN_from_montgomery_word. (To enable this otherwise,
5081 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
5083 [Andy Polyakov (backport partially by Bodo Moeller)]
5085 *) Add TLS session ticket callback. This allows an application to set
5086 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
5087 values. This is useful for key rollover for example where several key
5088 sets may exist with different names.
5091 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
5092 This was broken until now in 0.9.8 releases, such that the only way
5093 a registered ENGINE could be used (assuming it initialises
5094 successfully on the host) was to explicitly set it as the default
5095 for the relevant algorithms. This is in contradiction with 0.9.7
5096 behaviour and the documentation. With this fix, when an ENGINE is
5097 registered into a given algorithm's table of implementations, the
5098 'uptodate' flag is reset so that auto-discovery will be used next
5099 time a new context for that algorithm attempts to select an
5101 [Ian Lister (tweaked by Geoff Thorpe)]
5103 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
5104 implementation in the following ways:
5106 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
5109 Lack of BER streaming support means one pass streaming processing is
5110 only supported if data is detached: setting the streaming flag is
5111 ignored for embedded content.
5113 CMS support is disabled by default and must be explicitly enabled
5114 with the enable-cms configuration option.
5117 *) Update the GMP engine glue to do direct copies between BIGNUM and
5118 mpz_t when openssl and GMP use the same limb size. Otherwise the
5119 existing "conversion via a text string export" trick is still used.
5120 [Paul Sheer <paulsheer@gmail.com>]
5122 *) Zlib compression BIO. This is a filter BIO which compressed and
5123 uncompresses any data passed through it.
5126 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
5127 RFC3394 compatible AES key wrapping.
5130 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
5131 sets string data without copying. X509_ALGOR_set0() and
5132 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
5133 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
5134 from an X509_ATTRIBUTE structure optionally checking it occurs only
5135 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
5139 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
5140 to get the expected BN_FLG_CONSTTIME behavior.
5141 [Bodo Moeller (Google)]
5145 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
5146 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
5147 - added some more tests to do_tests.pl
5148 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
5149 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
5150 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
5151 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
5152 - various changes to netware.pl to enable gcc-cross builds on Win32
5154 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
5155 - various changes to fix missing prototype warnings
5156 - fixed x86nasm.pl to create correct asm files for NASM COFF output
5157 - added AES, WHIRLPOOL and CPUID assembler code to build files
5158 - added missing AES assembler make rules to mk1mf.pl
5159 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
5160 [Guenter Knauf <eflash@gmx.net>]
5162 *) Implement certificate status request TLS extension defined in RFC3546.
5163 A client can set the appropriate parameters and receive the encoded
5164 OCSP response via a callback. A server can query the supplied parameters
5165 and set the encoded OCSP response in the callback. Add simplified examples
5166 to s_client and s_server.
5169 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
5171 *) Fix various bugs:
5172 + Binary incompatibility of ssl_ctx_st structure
5173 + DTLS interoperation with non-compliant servers
5174 + Don't call get_session_cb() without proposed session
5175 + Fix ia64 assembler code
5176 [Andy Polyakov, Steve Henson]
5178 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
5180 *) DTLS Handshake overhaul. There were longstanding issues with
5181 OpenSSL DTLS implementation, which were making it impossible for
5182 RFC 4347 compliant client to communicate with OpenSSL server.
5183 Unfortunately just fixing these incompatibilities would "cut off"
5184 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
5185 server keeps tolerating non RFC compliant syntax. The opposite is
5186 not true, 0.9.8f client can not communicate with earlier server.
5187 This update even addresses CVE-2007-4995.
5190 *) Changes to avoid need for function casts in OpenSSL: some compilers
5191 (gcc 4.2 and later) reject their use.
5192 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
5195 *) Add RFC4507 support to OpenSSL. This includes the corrections in
5196 RFC4507bis. The encrypted ticket format is an encrypted encoded
5197 SSL_SESSION structure, that way new session features are automatically
5200 If a client application caches session in an SSL_SESSION structure
5201 support is transparent because tickets are now stored in the encoded
5204 The SSL_CTX structure automatically generates keys for ticket
5205 protection in servers so again support should be possible
5206 with no application modification.
5208 If a client or server wishes to disable RFC4507 support then the option
5209 SSL_OP_NO_TICKET can be set.
5211 Add a TLS extension debugging callback to allow the contents of any client
5212 or server extensions to be examined.
5214 This work was sponsored by Google.
5217 *) Add initial support for TLS extensions, specifically for the server_name
5218 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5219 have new members for a host name. The SSL data structure has an
5220 additional member SSL_CTX *initial_ctx so that new sessions can be
5221 stored in that context to allow for session resumption, even after the
5222 SSL has been switched to a new SSL_CTX in reaction to a client's
5223 server_name extension.
5225 New functions (subject to change):
5227 SSL_get_servername()
5228 SSL_get_servername_type()
5231 New CTRL codes and macros (subject to change):
5233 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5234 - SSL_CTX_set_tlsext_servername_callback()
5235 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5236 - SSL_CTX_set_tlsext_servername_arg()
5237 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5239 openssl s_client has a new '-servername ...' option.
5241 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5242 '-key2 ...', '-servername_fatal' (subject to change). This allows
5243 testing the HostName extension for a specific single host name ('-cert'
5244 and '-key' remain fallbacks for handshakes without HostName
5245 negotiation). If the unrecognized_name alert has to be sent, this by
5246 default is a warning; it becomes fatal with the '-servername_fatal'
5249 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
5251 *) Add AES and SSE2 assembly language support to VC++ build.
5254 *) Mitigate attack on final subtraction in Montgomery reduction.
5257 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
5258 (which previously caused an internal error).
5261 *) Squeeze another 10% out of IGE mode when in != out.
5264 *) AES IGE mode speedup.
5265 [Dean Gaudet (Google)]
5267 *) Add the Korean symmetric 128-bit cipher SEED (see
5268 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
5269 add SEED ciphersuites from RFC 4162:
5271 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
5272 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
5273 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
5274 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
5276 To minimize changes between patchlevels in the OpenSSL 0.9.8
5277 series, SEED remains excluded from compilation unless OpenSSL
5278 is configured with 'enable-seed'.
5279 [KISA, Bodo Moeller]
5281 *) Mitigate branch prediction attacks, which can be practical if a
5282 single processor is shared, allowing a spy process to extract
5283 information. For detailed background information, see
5284 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
5285 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
5286 and Necessary Software Countermeasures"). The core of the change
5287 are new versions BN_div_no_branch() and
5288 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
5289 respectively, which are slower, but avoid the security-relevant
5290 conditional branches. These are automatically called by BN_div()
5291 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
5292 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
5293 remove a conditional branch.
5295 BN_FLG_CONSTTIME is the new name for the previous
5296 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
5297 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
5298 in the exponent causes BN_mod_exp_mont() to use the alternative
5299 implementation in BN_mod_exp_mont_consttime().) The old name
5300 remains as a deprecated alias.
5302 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
5303 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
5304 constant-time implementations for more than just exponentiation.
5305 Here too the old name is kept as a deprecated alias.
5307 BN_BLINDING_new() will now use BN_dup() for the modulus so that
5308 the BN_BLINDING structure gets an independent copy of the
5309 modulus. This means that the previous "BIGNUM *m" argument to
5310 BN_BLINDING_new() and to BN_BLINDING_create_param() now
5311 essentially becomes "const BIGNUM *m", although we can't actually
5312 change this in the header file before 0.9.9. It allows
5313 RSA_setup_blinding() to use BN_with_flags() on the modulus to
5314 enable BN_FLG_CONSTTIME.
5316 [Matthew D Wood (Intel Corp)]
5318 *) In the SSL/TLS server implementation, be strict about session ID
5319 context matching (which matters if an application uses a single
5320 external cache for different purposes). Previously,
5321 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
5322 set. This did ensure strict client verification, but meant that,
5323 with applications using a single external cache for quite
5324 different requirements, clients could circumvent ciphersuite
5325 restrictions for a given session ID context by starting a session
5326 in a different context.
5329 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5330 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5331 authentication-only ciphersuites.
5334 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
5335 not complete and could lead to a possible single byte overflow
5336 (CVE-2007-5135) [Ben Laurie]
5338 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
5340 *) Since AES128 and AES256 (and similarly Camellia128 and
5341 Camellia256) share a single mask bit in the logic of
5342 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5343 kludge to work properly if AES128 is available and AES256 isn't
5344 (or if Camellia128 is available and Camellia256 isn't).
5347 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
5348 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
5349 When a point or a seed is encoded in a BIT STRING, we need to
5350 prevent the removal of trailing zero bits to get the proper DER
5351 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
5352 of a NamedBitList, for which trailing 0 bits need to be removed.)
5355 *) Have SSL/TLS server implementation tolerate "mismatched" record
5356 protocol version while receiving ClientHello even if the
5357 ClientHello is fragmented. (The server can't insist on the
5358 particular protocol version it has chosen before the ServerHello
5359 message has informed the client about his choice.)
5362 *) Add RFC 3779 support.
5363 [Rob Austein for ARIN, Ben Laurie]
5365 *) Load error codes if they are not already present instead of using a
5366 static variable. This allows them to be cleanly unloaded and reloaded.
5367 Improve header file function name parsing.
5370 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
5371 or CAPABILITY handshake as required by RFCs.
5374 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
5376 *) Introduce limits to prevent malicious keys being able to
5377 cause a denial of service. (CVE-2006-2940)
5378 [Steve Henson, Bodo Moeller]
5380 *) Fix ASN.1 parsing of certain invalid structures that can result
5381 in a denial of service. (CVE-2006-2937) [Steve Henson]
5383 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5384 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5386 *) Fix SSL client code which could crash if connecting to a
5387 malicious SSLv2 server. (CVE-2006-4343)
5388 [Tavis Ormandy and Will Drewry, Google Security Team]
5390 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
5391 match only those. Before that, "AES256-SHA" would be interpreted
5392 as a pattern and match "AES128-SHA" too (since AES128-SHA got
5393 the same strength classification in 0.9.7h) as we currently only
5394 have a single AES bit in the ciphersuite description bitmap.
5395 That change, however, also applied to ciphersuite strings such as
5396 "RC4-MD5" that intentionally matched multiple ciphersuites --
5397 namely, SSL 2.0 ciphersuites in addition to the more common ones
5398 from SSL 3.0/TLS 1.0.
5400 So we change the selection algorithm again: Naming an explicit
5401 ciphersuite selects this one ciphersuite, and any other similar
5402 ciphersuite (same bitmap) from *other* protocol versions.
5403 Thus, "RC4-MD5" again will properly select both the SSL 2.0
5404 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
5406 Since SSL 2.0 does not have any ciphersuites for which the
5407 128/256 bit distinction would be relevant, this works for now.
5408 The proper fix will be to use different bits for AES128 and
5409 AES256, which would have avoided the problems from the beginning;
5410 however, bits are scarce, so we can only do this in a new release
5411 (not just a patchlevel) when we can change the SSL_CIPHER
5412 definition to split the single 'unsigned long mask' bitmap into
5413 multiple values to extend the available space.
5417 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
5419 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5420 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5422 *) Add AES IGE and biIGE modes.
5425 *) Change the Unix randomness entropy gathering to use poll() when
5426 possible instead of select(), since the latter has some
5427 undesirable limitations.
5428 [Darryl Miles via Richard Levitte and Bodo Moeller]
5430 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
5431 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
5432 cannot be implicitly activated as part of, e.g., the "AES" alias.
5433 However, please upgrade to OpenSSL 0.9.9[-dev] for
5434 non-experimental use of the ECC ciphersuites to get TLS extension
5435 support, which is required for curve and point format negotiation
5436 to avoid potential handshake problems.
5439 *) Disable rogue ciphersuites:
5441 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5442 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5443 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5445 The latter two were purportedly from
5446 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5449 Also deactivate the remaining ciphersuites from
5450 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5451 unofficial, and the ID has long expired.
5454 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5455 dual-core machines) and other potential thread-safety issues.
5458 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
5459 versions), which is now available for royalty-free use
5460 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
5461 Also, add Camellia TLS ciphersuites from RFC 4132.
5463 To minimize changes between patchlevels in the OpenSSL 0.9.8
5464 series, Camellia remains excluded from compilation unless OpenSSL
5465 is configured with 'enable-camellia'.
5468 *) Disable the padding bug check when compression is in use. The padding
5469 bug check assumes the first packet is of even length, this is not
5470 necessarily true if compression is enabled and can result in false
5471 positives causing handshake failure. The actual bug test is ancient
5472 code so it is hoped that implementations will either have fixed it by
5473 now or any which still have the bug do not support compression.
5476 Changes between 0.9.8a and 0.9.8b [04 May 2006]
5478 *) When applying a cipher rule check to see if string match is an explicit
5479 cipher suite and only match that one cipher suite if it is.
5482 *) Link in manifests for VC++ if needed.
5483 [Austin Ziegler <halostatue@gmail.com>]
5485 *) Update support for ECC-based TLS ciphersuites according to
5486 draft-ietf-tls-ecc-12.txt with proposed changes (but without
5487 TLS extensions, which are supported starting with the 0.9.9
5488 branch, not in the OpenSSL 0.9.8 branch).
5491 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
5492 opaque EVP_CIPHER_CTX handling.
5495 *) Fixes and enhancements to zlib compression code. We now only use
5496 "zlib1.dll" and use the default __cdecl calling convention on Win32
5497 to conform with the standards mentioned here:
5498 http://www.zlib.net/DLL_FAQ.txt
5499 Static zlib linking now works on Windows and the new --with-zlib-include
5500 --with-zlib-lib options to Configure can be used to supply the location
5501 of the headers and library. Gracefully handle case where zlib library
5505 *) Several fixes and enhancements to the OID generation code. The old code
5506 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
5507 handle numbers larger than ULONG_MAX, truncated printing and had a
5508 non standard OBJ_obj2txt() behaviour.
5511 *) Add support for building of engines under engine/ as shared libraries
5512 under VC++ build system.
5515 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
5516 Hopefully, we will not see any false combination of paths any more.
5519 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
5521 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5522 (part of SSL_OP_ALL). This option used to disable the
5523 countermeasure against man-in-the-middle protocol-version
5524 rollback in the SSL 2.0 server implementation, which is a bad
5525 idea. (CVE-2005-2969)
5527 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5528 for Information Security, National Institute of Advanced Industrial
5529 Science and Technology [AIST], Japan)]
5531 *) Add two function to clear and return the verify parameter flags.
5534 *) Keep cipherlists sorted in the source instead of sorting them at
5535 runtime, thus removing the need for a lock.
5538 *) Avoid some small subgroup attacks in Diffie-Hellman.
5539 [Nick Mathewson and Ben Laurie]
5541 *) Add functions for well-known primes.
5544 *) Extended Windows CE support.
5545 [Satoshi Nakamura and Andy Polyakov]
5547 *) Initialize SSL_METHOD structures at compile time instead of during
5548 runtime, thus removing the need for a lock.
5551 *) Make PKCS7_decrypt() work even if no certificate is supplied by
5552 attempting to decrypt each encrypted key in turn. Add support to
5556 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
5558 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
5561 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
5564 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
5565 key into the same file any more.
5568 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
5571 *) Add -utf8 command line and config file option to 'ca'.
5572 [Stefan <stf@udoma.org]
5574 *) Removed the macro des_crypt(), as it seems to conflict with some
5575 libraries. Use DES_crypt().
5578 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
5579 involves renaming the source and generated shared-libs for
5580 both. The engines will accept the corrected or legacy ids
5581 ('ncipher' and '4758_cca' respectively) when binding. NB,
5582 this only applies when building 'shared'.
5583 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
5585 *) Add attribute functions to EVP_PKEY structure. Modify
5586 PKCS12_create() to recognize a CSP name attribute and
5587 use it. Make -CSP option work again in pkcs12 utility.
5590 *) Add new functionality to the bn blinding code:
5591 - automatic re-creation of the BN_BLINDING parameters after
5592 a fixed number of uses (currently 32)
5593 - add new function for parameter creation
5594 - introduce flags to control the update behaviour of the
5595 BN_BLINDING parameters
5596 - hide BN_BLINDING structure
5597 Add a second BN_BLINDING slot to the RSA structure to improve
5598 performance when a single RSA object is shared among several
5602 *) Add support for DTLS.
5603 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
5605 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
5606 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
5609 *) Remove buggy and incomplete DH cert support from
5610 ssl/ssl_rsa.c and ssl/s3_both.c
5613 *) Use SHA-1 instead of MD5 as the default digest algorithm for
5614 the apps/openssl applications.
5617 *) Compile clean with "-Wall -Wmissing-prototypes
5618 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
5619 DEBUG_SAFESTACK must also be set.
5622 *) Change ./Configure so that certain algorithms can be disabled by default.
5623 The new counterpiece to "no-xxx" is "enable-xxx".
5625 The patented RC5 and MDC2 algorithms will now be disabled unless
5626 "enable-rc5" and "enable-mdc2", respectively, are specified.
5628 (IDEA remains enabled despite being patented. This is because IDEA
5629 is frequently required for interoperability, and there is no license
5630 fee for non-commercial use. As before, "no-idea" can be used to
5631 avoid this algorithm.)
5635 *) Add processing of proxy certificates (see RFC 3820). This work was
5636 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
5637 EGEE (Enabling Grids for E-science in Europe).
5640 *) RC4 performance overhaul on modern architectures/implementations, such
5641 as Intel P4, IA-64 and AMD64.
5644 *) New utility extract-section.pl. This can be used specify an alternative
5645 section number in a pod file instead of having to treat each file as
5646 a separate case in Makefile. This can be done by adding two lines to the
5649 =for comment openssl_section:XXX
5651 The blank line is mandatory.
5655 *) New arguments -certform, -keyform and -pass for s_client and s_server
5656 to allow alternative format key and certificate files and passphrase
5660 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
5661 update associated structures and add various utility functions.
5663 Add new policy related verify parameters, include policy checking in
5664 standard verify code. Enhance 'smime' application with extra parameters
5665 to support policy checking and print out.
5668 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
5669 Nehemiah processors. These extensions support AES encryption in hardware
5670 as well as RNG (though RNG support is currently disabled).
5671 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
5673 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
5676 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
5677 [Andy Polyakov and a number of other people]
5679 *) Improved PowerPC platform support. Most notably BIGNUM assembler
5680 implementation contributed by IBM.
5681 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
5683 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
5684 exponent rather than 'unsigned long'. There is a corresponding change to
5685 the new 'rsa_keygen' element of the RSA_METHOD structure.
5686 [Jelte Jansen, Geoff Thorpe]
5688 *) Functionality for creating the initial serial number file is now
5689 moved from CA.pl to the 'ca' utility with a new option -create_serial.
5691 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
5692 number file to 1, which is bound to cause problems. To avoid
5693 the problems while respecting compatibility between different 0.9.7
5694 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
5695 CA.pl for serial number initialization. With the new release 0.9.8,
5696 we can fix the problem directly in the 'ca' utility.)
5699 *) Reduced header interdependencies by declaring more opaque objects in
5700 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
5701 give fewer recursive includes, which could break lazy source code - so
5702 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
5703 developers should define this symbol when building and using openssl to
5704 ensure they track the recommended behaviour, interfaces, [etc], but
5705 backwards-compatible behaviour prevails when this isn't defined.
5708 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
5711 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
5712 This will generate a random key of the appropriate length based on the
5713 cipher context. The EVP_CIPHER can provide its own random key generation
5714 routine to support keys of a specific form. This is used in the des and
5715 3des routines to generate a key of the correct parity. Update S/MIME
5716 code to use new functions and hence generate correct parity DES keys.
5717 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
5718 valid (weak or incorrect parity).
5721 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
5722 as looking them up. This is useful when the verified structure may contain
5723 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
5724 present unless the new PKCS7_NO_CRL flag is asserted.
5727 *) Extend ASN1 oid configuration module. It now additionally accepts the
5730 shortName = some long name, 1.2.3.4
5733 *) Reimplemented the BN_CTX implementation. There is now no more static
5734 limitation on the number of variables it can handle nor the depth of the
5735 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
5736 information can now expand as required, and rather than having a single
5737 static array of bignums, BN_CTX now uses a linked-list of such arrays
5738 allowing it to expand on demand whilst maintaining the usefulness of
5739 BN_CTX's "bundling".
5742 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
5743 to allow all RSA operations to function using a single BN_CTX.
5746 *) Preliminary support for certificate policy evaluation and checking. This
5747 is initially intended to pass the tests outlined in "Conformance Testing
5748 of Relying Party Client Certificate Path Processing Logic" v1.07.
5751 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
5752 remained unused and not that useful. A variety of other little bignum
5753 tweaks and fixes have also been made continuing on from the audit (see
5757 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
5758 associated ASN1, EVP and SSL functions and old ASN1 macros.
5761 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
5762 and this should never fail. So the return value from the use of
5763 BN_set_word() (which can fail due to needless expansion) is now deprecated;
5764 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
5767 *) BN_CTX_get() should return zero-valued bignums, providing the same
5768 initialised value as BN_new().
5769 [Geoff Thorpe, suggested by Ulf Möller]
5771 *) Support for inhibitAnyPolicy certificate extension.
5774 *) An audit of the BIGNUM code is underway, for which debugging code is
5775 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
5776 is considered valid when processing BIGNUMs, and causes execution to
5777 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
5778 further steps are taken to deliberately pollute unused data in BIGNUM
5779 structures to try and expose faulty code further on. For now, openssl will
5780 (in its default mode of operation) continue to tolerate the inconsistent
5781 forms that it has tolerated in the past, but authors and packagers should
5782 consider trying openssl and their own applications when compiled with
5783 these debugging symbols defined. It will help highlight potential bugs in
5784 their own code, and will improve the test coverage for OpenSSL itself. At
5785 some point, these tighter rules will become openssl's default to improve
5786 maintainability, though the assert()s and other overheads will remain only
5787 in debugging configurations. See bn.h for more details.
5788 [Geoff Thorpe, Nils Larsch, Ulf Möller]
5790 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
5791 that can only be obtained through BN_CTX_new() (which implicitly
5792 initialises it). The presence of this function only made it possible
5793 to overwrite an existing structure (and cause memory leaks).
5796 *) Because of the callback-based approach for implementing LHASH as a
5797 template type, lh_insert() adds opaque objects to hash-tables and
5798 lh_doall() or lh_doall_arg() are typically used with a destructor callback
5799 to clean up those corresponding objects before destroying the hash table
5800 (and losing the object pointers). So some over-zealous constifications in
5801 LHASH have been relaxed so that lh_insert() does not take (nor store) the
5802 objects as "const" and the lh_doall[_arg] callback wrappers are not
5803 prototyped to have "const" restrictions on the object pointers they are
5804 given (and so aren't required to cast them away any more).
5807 *) The tmdiff.h API was so ugly and minimal that our own timing utility
5808 (speed) prefers to use its own implementation. The two implementations
5809 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
5810 its object type properly exposed (MS_TM) instead of casting to/from "char
5811 *". This may still change yet if someone realises MS_TM and "ms_time_***"
5812 aren't necessarily the greatest nomenclatures - but this is what was used
5813 internally to the implementation so I've used that for now.
5816 *) Ensure that deprecated functions do not get compiled when
5817 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
5818 the self-tests were still using deprecated key-generation functions so
5819 these have been updated also.
5822 *) Reorganise PKCS#7 code to separate the digest location functionality
5823 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
5824 New function PKCS7_set_digest() to set the digest type for PKCS#7
5825 digestedData type. Add additional code to correctly generate the
5826 digestedData type and add support for this type in PKCS7 initialization
5830 *) New function PKCS7_set0_type_other() this initializes a PKCS7
5831 structure of type "other".
5834 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
5835 sure the loop does correctly stop and breaking ("division by zero")
5836 modulus operations are not performed. The (pre-generated) prime
5837 table crypto/bn/bn_prime.h was already correct, but it could not be
5838 re-generated on some platforms because of the "division by zero"
5839 situation in the script.
5840 [Ralf S. Engelschall]
5842 *) Update support for ECC-based TLS ciphersuites according to
5843 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
5844 SHA-1 now is only used for "small" curves (where the
5845 representation of a field element takes up to 24 bytes); for
5846 larger curves, the field element resulting from ECDH is directly
5847 used as premaster secret.
5848 [Douglas Stebila (Sun Microsystems Laboratories)]
5850 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
5851 curve secp160r1 to the tests.
5852 [Douglas Stebila (Sun Microsystems Laboratories)]
5854 *) Add the possibility to load symbols globally with DSO.
5855 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
5857 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
5858 control of the error stack.
5861 *) Add support for STORE in ENGINE.
5864 *) Add the STORE type. The intention is to provide a common interface
5865 to certificate and key stores, be they simple file-based stores, or
5866 HSM-type store, or LDAP stores, or...
5867 NOTE: The code is currently UNTESTED and isn't really used anywhere.
5870 *) Add a generic structure called OPENSSL_ITEM. This can be used to
5871 pass a list of arguments to any function as well as provide a way
5872 for a function to pass data back to the caller.
5875 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
5876 works like BUF_strdup() but can be used to duplicate a portion of
5877 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
5881 *) Add the function sk_find_ex() which works like sk_find(), but will
5882 return an index to an element even if an exact match couldn't be
5883 found. The index is guaranteed to point at the element where the
5884 searched-for key would be inserted to preserve sorting order.
5887 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
5888 takes an extra flags argument for optional functionality. Currently,
5889 the following flags are defined:
5891 OBJ_BSEARCH_VALUE_ON_NOMATCH
5892 This one gets OBJ_bsearch_ex() to return a pointer to the first
5893 element where the comparing function returns a negative or zero
5896 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
5897 This one gets OBJ_bsearch_ex() to return a pointer to the first
5898 element where the comparing function returns zero. This is useful
5899 if there are more than one element where the comparing function
5903 *) Make it possible to create self-signed certificates with 'openssl ca'
5904 in such a way that the self-signed certificate becomes part of the
5905 CA database and uses the same mechanisms for serial number generation
5906 as all other certificate signing. The new flag '-selfsign' enables
5907 this functionality. Adapt CA.sh and CA.pl.in.
5910 *) Add functionality to check the public key of a certificate request
5911 against a given private. This is useful to check that a certificate
5912 request can be signed by that key (self-signing).
5915 *) Make it possible to have multiple active certificates with the same
5916 subject in the CA index file. This is done only if the keyword
5917 'unique_subject' is set to 'no' in the main CA section (default
5918 if 'CA_default') of the configuration file. The value is saved
5919 with the database itself in a separate index attribute file,
5920 named like the index file with '.attr' appended to the name.
5923 *) Generate multi-valued AVAs using '+' notation in config files for
5927 *) Support for nameConstraints certificate extension.
5930 *) Support for policyConstraints certificate extension.
5933 *) Support for policyMappings certificate extension.
5936 *) Make sure the default DSA_METHOD implementation only uses its
5937 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
5938 and change its own handlers to be NULL so as to remove unnecessary
5939 indirection. This lets alternative implementations fallback to the
5940 default implementation more easily.
5943 *) Support for directoryName in GeneralName related extensions
5947 *) Make it possible to link applications using Makefile.shared.
5948 Make that possible even when linking against static libraries!
5951 *) Support for single pass processing for S/MIME signing. This now
5952 means that S/MIME signing can be done from a pipe, in addition
5953 cleartext signing (multipart/signed type) is effectively streaming
5954 and the signed data does not need to be all held in memory.
5956 This is done with a new flag PKCS7_STREAM. When this flag is set
5957 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
5958 is done after the data is output (and digests calculated) in
5959 SMIME_write_PKCS7().
5962 *) Add full support for -rpath/-R, both in shared libraries and
5963 applications, at least on the platforms where it's known how
5967 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
5968 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
5969 will now compute a table of multiples of the generator that
5970 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
5971 faster (notably in the case of a single point multiplication,
5972 scalar * generator).
5973 [Nils Larsch, Bodo Moeller]
5975 *) IPv6 support for certificate extensions. The various extensions
5976 which use the IP:a.b.c.d can now take IPv6 addresses using the
5977 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
5981 *) Added an ENGINE that implements RSA by performing private key
5982 exponentiations with the GMP library. The conversions to and from
5983 GMP's mpz_t format aren't optimised nor are any montgomery forms
5984 cached, and on x86 it appears OpenSSL's own performance has caught up.
5985 However there are likely to be other architectures where GMP could
5986 provide a boost. This ENGINE is not built in by default, but it can be
5987 specified at Configure time and should be accompanied by the necessary
5988 linker additions, eg;
5989 ./config -DOPENSSL_USE_GMP -lgmp
5992 *) "openssl engine" will not display ENGINE/DSO load failure errors when
5993 testing availability of engines with "-t" - the old behaviour is
5994 produced by increasing the feature's verbosity with "-tt".
5997 *) ECDSA routines: under certain error conditions uninitialized BN objects
5998 could be freed. Solution: make sure initialization is performed early
5999 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
6003 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
6004 and DH_METHOD (eg. by ENGINE implementations) to override the normal
6005 software implementations. For DSA and DH, parameter generation can
6006 also be overridden by providing the appropriate method callbacks.
6009 *) Change the "progress" mechanism used in key-generation and
6010 primality testing to functions that take a new BN_GENCB pointer in
6011 place of callback/argument pairs. The new API functions have "_ex"
6012 postfixes and the older functions are reimplemented as wrappers for
6013 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
6014 declarations of the old functions to help (graceful) attempts to
6015 migrate to the new functions. Also, the new key-generation API
6016 functions operate on a caller-supplied key-structure and return
6017 success/failure rather than returning a key or NULL - this is to
6018 help make "keygen" another member function of RSA_METHOD etc.
6020 Example for using the new callback interface:
6022 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
6026 BN_GENCB_set(&my_cb, my_callback, my_arg);
6028 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
6029 /* For the meaning of a, b in calls to my_callback(), see the
6030 * documentation of the function that calls the callback.
6031 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
6032 * my_callback should return 1 if it wants BN_is_prime_ex()
6033 * to continue, or 0 to stop.
6038 *) Change the ZLIB compression method to be stateful, and make it
6039 available to TLS with the number defined in
6040 draft-ietf-tls-compression-04.txt.
6043 *) Add the ASN.1 structures and functions for CertificatePair, which
6044 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
6046 CertificatePair ::= SEQUENCE {
6047 forward [0] Certificate OPTIONAL,
6048 reverse [1] Certificate OPTIONAL,
6049 -- at least one of the pair shall be present -- }
6051 Also implement the PEM functions to read and write certificate
6052 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
6054 This needed to be defined, mostly for the sake of the LDAP
6055 attribute crossCertificatePair, but may prove useful elsewhere as
6059 *) Make it possible to inhibit symlinking of shared libraries in
6060 Makefile.shared, for Cygwin's sake.
6063 *) Extend the BIGNUM API by creating a function
6064 void BN_set_negative(BIGNUM *a, int neg);
6065 and a macro that behave like
6066 int BN_is_negative(const BIGNUM *a);
6068 to avoid the need to access 'a->neg' directly in applications.
6071 *) Implement fast modular reduction for pseudo-Mersenne primes
6072 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
6073 EC_GROUP_new_curve_GFp() will now automatically use this
6075 [Nils Larsch <nla@trustcenter.de>]
6077 *) Add new lock type (CRYPTO_LOCK_BN).
6080 *) Change the ENGINE framework to automatically load engines
6081 dynamically from specific directories unless they could be
6082 found to already be built in or loaded. Move all the
6083 current engines except for the cryptodev one to a new
6085 The engines in engines/ are built as shared libraries if
6086 the "shared" options was given to ./Configure or ./config.
6087 Otherwise, they are inserted in libcrypto.a.
6088 /usr/local/ssl/engines is the default directory for dynamic
6089 engines, but that can be overridden at configure time through
6090 the usual use of --prefix and/or --openssldir, and at run
6091 time with the environment variable OPENSSL_ENGINES.
6092 [Geoff Thorpe and Richard Levitte]
6094 *) Add Makefile.shared, a helper makefile to build shared
6095 libraries. Adapt Makefile.org.
6098 *) Add version info to Win32 DLLs.
6099 [Peter 'Luna' Runestig" <peter@runestig.com>]
6101 *) Add new 'medium level' PKCS#12 API. Certificates and keys
6102 can be added using this API to created arbitrary PKCS#12
6103 files while avoiding the low level API.
6105 New options to PKCS12_create(), key or cert can be NULL and
6106 will then be omitted from the output file. The encryption
6107 algorithm NIDs can be set to -1 for no encryption, the mac
6108 iteration count can be set to 0 to omit the mac.
6110 Enhance pkcs12 utility by making the -nokeys and -nocerts
6111 options work when creating a PKCS#12 file. New option -nomac
6112 to omit the mac, NONE can be set for an encryption algorithm.
6113 New code is modified to use the enhanced PKCS12_create()
6114 instead of the low level API.
6117 *) Extend ASN1 encoder to support indefinite length constructed
6118 encoding. This can output sequences tags and octet strings in
6119 this form. Modify pk7_asn1.c to support indefinite length
6120 encoding. This is experimental and needs additional code to
6121 be useful, such as an ASN1 bio and some enhanced streaming
6124 Extend template encode functionality so that tagging is passed
6125 down to the template encoder.
6128 *) Let 'openssl req' fail if an argument to '-newkey' is not
6129 recognized instead of using RSA as a default.
6132 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
6133 As these are not official, they are not included in "ALL";
6134 the "ECCdraft" ciphersuite group alias can be used to select them.
6135 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
6137 *) Add ECDH engine support.
6138 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
6140 *) Add ECDH in new directory crypto/ecdh/.
6141 [Douglas Stebila (Sun Microsystems Laboratories)]
6143 *) Let BN_rand_range() abort with an error after 100 iterations
6144 without success (which indicates a broken PRNG).
6147 *) Change BN_mod_sqrt() so that it verifies that the input value
6148 is really the square of the return value. (Previously,
6149 BN_mod_sqrt would show GIGO behaviour.)
6152 *) Add named elliptic curves over binary fields from X9.62, SECG,
6153 and WAP/WTLS; add OIDs that were still missing.
6155 [Sheueling Chang Shantz and Douglas Stebila
6156 (Sun Microsystems Laboratories)]
6158 *) Extend the EC library for elliptic curves over binary fields
6159 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
6162 EC_GF2m_simple_method
6166 EC_GROUP_new_curve_GF2m
6167 EC_GROUP_set_curve_GF2m
6168 EC_GROUP_get_curve_GF2m
6169 EC_POINT_set_affine_coordinates_GF2m
6170 EC_POINT_get_affine_coordinates_GF2m
6171 EC_POINT_set_compressed_coordinates_GF2m
6173 Point compression for binary fields is disabled by default for
6174 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
6177 As binary polynomials are represented as BIGNUMs, various members
6178 of the EC_GROUP and EC_POINT data structures can be shared
6179 between the implementations for prime fields and binary fields;
6180 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
6181 are essentially identical to their ..._GFp counterparts.
6182 (For simplicity, the '..._GFp' prefix has been dropped from
6183 various internal method names.)
6185 An internal 'field_div' method (similar to 'field_mul' and
6186 'field_sqr') has been added; this is used only for binary fields.
6188 [Sheueling Chang Shantz and Douglas Stebila
6189 (Sun Microsystems Laboratories)]
6191 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
6192 through methods ('mul', 'precompute_mult').
6194 The generic implementations (now internally called 'ec_wNAF_mul'
6195 and 'ec_wNAF_precomputed_mult') remain the default if these
6196 methods are undefined.
6198 [Sheueling Chang Shantz and Douglas Stebila
6199 (Sun Microsystems Laboratories)]
6201 *) New function EC_GROUP_get_degree, which is defined through
6202 EC_METHOD. For curves over prime fields, this returns the bit
6203 length of the modulus.
6205 [Sheueling Chang Shantz and Douglas Stebila
6206 (Sun Microsystems Laboratories)]
6208 *) New functions EC_GROUP_dup, EC_POINT_dup.
6209 (These simply call ..._new and ..._copy).
6211 [Sheueling Chang Shantz and Douglas Stebila
6212 (Sun Microsystems Laboratories)]
6214 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
6215 Polynomials are represented as BIGNUMs (where the sign bit is not
6216 used) in the following functions [macros]:
6219 BN_GF2m_sub [= BN_GF2m_add]
6220 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
6221 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
6222 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
6224 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
6225 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
6226 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
6227 BN_GF2m_cmp [= BN_ucmp]
6229 (Note that only the 'mod' functions are actually for fields GF(2^m).
6230 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
6232 For some functions, an the irreducible polynomial defining a
6233 field can be given as an 'unsigned int[]' with strictly
6234 decreasing elements giving the indices of those bits that are set;
6235 i.e., p[] represents the polynomial
6236 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
6238 p[0] > p[1] > ... > p[k] = 0.
6239 This applies to the following functions:
6244 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
6245 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
6247 BN_GF2m_mod_sqrt_arr
6248 BN_GF2m_mod_solve_quad_arr
6252 Conversion can be performed by the following functions:
6257 bntest.c has additional tests for binary polynomial arithmetic.
6259 Two implementations for BN_GF2m_mod_div() are available.
6260 The default algorithm simply uses BN_GF2m_mod_inv() and
6261 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
6262 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
6263 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
6265 [Sheueling Chang Shantz and Douglas Stebila
6266 (Sun Microsystems Laboratories)]
6268 *) Add new error code 'ERR_R_DISABLED' that can be used when some
6269 functionality is disabled at compile-time.
6270 [Douglas Stebila <douglas.stebila@sun.com>]
6272 *) Change default behaviour of 'openssl asn1parse' so that more
6273 information is visible when viewing, e.g., a certificate:
6275 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
6276 mode the content of non-printable OCTET STRINGs is output in a
6277 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
6278 avoid the appearance of a printable string.
6279 [Nils Larsch <nla@trustcenter.de>]
6281 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
6283 EC_GROUP_set_asn1_flag()
6284 EC_GROUP_get_asn1_flag()
6285 EC_GROUP_set_point_conversion_form()
6286 EC_GROUP_get_point_conversion_form()
6287 These control ASN1 encoding details:
6288 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
6289 has been set to OPENSSL_EC_NAMED_CURVE.
6290 - Points are encoded in uncompressed form by default; options for
6291 asn1_for are as for point2oct, namely
6292 POINT_CONVERSION_COMPRESSED
6293 POINT_CONVERSION_UNCOMPRESSED
6294 POINT_CONVERSION_HYBRID
6296 Also add 'seed' and 'seed_len' members to EC_GROUP with access
6299 EC_GROUP_get0_seed()
6300 EC_GROUP_get_seed_len()
6301 This is used only for ASN1 purposes (so far).
6302 [Nils Larsch <nla@trustcenter.de>]
6304 *) Add 'field_type' member to EC_METHOD, which holds the NID
6305 of the appropriate field type OID. The new function
6306 EC_METHOD_get_field_type() returns this value.
6307 [Nils Larsch <nla@trustcenter.de>]
6312 EC_POINT_point2hex()
6313 EC_POINT_hex2point()
6314 providing useful interfaces to EC_POINT_point2oct() and
6315 EC_POINT_oct2point().
6316 [Nils Larsch <nla@trustcenter.de>]
6318 *) Change internals of the EC library so that the functions
6319 EC_GROUP_set_generator()
6320 EC_GROUP_get_generator()
6321 EC_GROUP_get_order()
6322 EC_GROUP_get_cofactor()
6323 are implemented directly in crypto/ec/ec_lib.c and not dispatched
6324 to methods, which would lead to unnecessary code duplication when
6325 adding different types of curves.
6326 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
6328 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
6329 arithmetic, and such that modified wNAFs are generated
6330 (which avoid length expansion in many cases).
6333 *) Add a function EC_GROUP_check_discriminant() (defined via
6334 EC_METHOD) that verifies that the curve discriminant is non-zero.
6336 Add a function EC_GROUP_check() that makes some sanity tests
6337 on a EC_GROUP, its generator and order. This includes
6338 EC_GROUP_check_discriminant().
6339 [Nils Larsch <nla@trustcenter.de>]
6341 *) Add ECDSA in new directory crypto/ecdsa/.
6343 Add applications 'openssl ecparam' and 'openssl ecdsa'
6344 (these are based on 'openssl dsaparam' and 'openssl dsa').
6346 ECDSA support is also included in various other files across the
6347 library. Most notably,
6348 - 'openssl req' now has a '-newkey ecdsa:file' option;
6349 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
6350 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
6351 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
6352 them suitable for ECDSA where domain parameters must be
6353 extracted before the specific public key;
6354 - ECDSA engine support has been added.
6355 [Nils Larsch <nla@trustcenter.de>]
6357 *) Include some named elliptic curves, and add OIDs from X9.62,
6358 SECG, and WAP/WTLS. Each curve can be obtained from the new
6360 EC_GROUP_new_by_curve_name(),
6361 and the list of available named curves can be obtained with
6362 EC_get_builtin_curves().
6363 Also add a 'curve_name' member to EC_GROUP objects, which can be
6365 EC_GROUP_set_curve_name()
6366 EC_GROUP_get_curve_name()
6367 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
6369 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6370 was actually never needed) and in BN_mul(). The removal in BN_mul()
6371 required a small change in bn_mul_part_recursive() and the addition
6372 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6373 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6374 bn_sub_words() and bn_add_words() except they take arrays with
6378 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
6380 *) Cleanse PEM buffers before freeing them since they may contain
6382 [Benjamin Bennett <ben@psc.edu>]
6384 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
6385 a ciphersuite string such as "DEFAULT:RSA" cannot enable
6386 authentication-only ciphersuites.
6389 *) Since AES128 and AES256 share a single mask bit in the logic of
6390 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
6391 kludge to work properly if AES128 is available and AES256 isn't.
6394 *) Expand security boundary to match 1.1.1 module.
6397 *) Remove redundant features: hash file source, editing of test vectors
6398 modify fipsld to use external fips_premain.c signature.
6401 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
6402 run algorithm test programs.
6405 *) Make algorithm test programs more tolerant of whitespace.
6408 *) Have SSL/TLS server implementation tolerate "mismatched" record
6409 protocol version while receiving ClientHello even if the
6410 ClientHello is fragmented. (The server can't insist on the
6411 particular protocol version it has chosen before the ServerHello
6412 message has informed the client about his choice.)
6415 *) Load error codes if they are not already present instead of using a
6416 static variable. This allows them to be cleanly unloaded and reloaded.
6419 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
6421 *) Introduce limits to prevent malicious keys being able to
6422 cause a denial of service. (CVE-2006-2940)
6423 [Steve Henson, Bodo Moeller]
6425 *) Fix ASN.1 parsing of certain invalid structures that can result
6426 in a denial of service. (CVE-2006-2937) [Steve Henson]
6428 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
6429 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
6431 *) Fix SSL client code which could crash if connecting to a
6432 malicious SSLv2 server. (CVE-2006-4343)
6433 [Tavis Ormandy and Will Drewry, Google Security Team]
6435 *) Change ciphersuite string processing so that an explicit
6436 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
6437 will no longer include "AES128-SHA"), and any other similar
6438 ciphersuite (same bitmap) from *other* protocol versions (so that
6439 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
6440 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
6441 changes from 0.9.8b and 0.9.8d.
6444 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
6446 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
6447 (CVE-2006-4339) [Ben Laurie and Google Security Team]
6449 *) Change the Unix randomness entropy gathering to use poll() when
6450 possible instead of select(), since the latter has some
6451 undesirable limitations.
6452 [Darryl Miles via Richard Levitte and Bodo Moeller]
6454 *) Disable rogue ciphersuites:
6456 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
6457 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
6458 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
6460 The latter two were purportedly from
6461 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
6464 Also deactivate the remaining ciphersuites from
6465 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
6466 unofficial, and the ID has long expired.
6469 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
6470 dual-core machines) and other potential thread-safety issues.
6473 Changes between 0.9.7i and 0.9.7j [04 May 2006]
6475 *) Adapt fipsld and the build system to link against the validated FIPS
6476 module in FIPS mode.
6479 *) Fixes for VC++ 2005 build under Windows.
6482 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
6483 from a Windows bash shell such as MSYS. It is autodetected from the
6484 "config" script when run from a VC++ environment. Modify standard VC++
6485 build to use fipscanister.o from the GNU make build.
6488 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
6490 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
6491 The value now differs depending on if you build for FIPS or not.
6492 BEWARE! A program linked with a shared FIPSed libcrypto can't be
6493 safely run with a non-FIPSed libcrypto, as it may crash because of
6494 the difference induced by this change.
6497 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
6499 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
6500 (part of SSL_OP_ALL). This option used to disable the
6501 countermeasure against man-in-the-middle protocol-version
6502 rollback in the SSL 2.0 server implementation, which is a bad
6503 idea. (CVE-2005-2969)
6505 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
6506 for Information Security, National Institute of Advanced Industrial
6507 Science and Technology [AIST], Japan)]
6509 *) Minimal support for X9.31 signatures and PSS padding modes. This is
6510 mainly for FIPS compliance and not fully integrated at this stage.
6513 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
6514 the exponentiation using a fixed-length exponent. (Otherwise,
6515 the information leaked through timing could expose the secret key
6516 after many signatures; cf. Bleichenbacher's attack on DSA with
6520 *) Make a new fixed-window mod_exp implementation the default for
6521 RSA, DSA, and DH private-key operations so that the sequence of
6522 squares and multiplies and the memory access pattern are
6523 independent of the particular secret key. This will mitigate
6524 cache-timing and potential related attacks.
6526 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
6527 and this is automatically used by BN_mod_exp_mont() if the new flag
6528 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
6529 will use this BN flag for private exponents unless the flag
6530 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
6531 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
6533 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
6535 *) Change the client implementation for SSLv23_method() and
6536 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
6537 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
6538 (Previously, the SSL 2.0 backwards compatible Client Hello
6539 message format would be used even with SSL_OP_NO_SSLv2.)
6542 *) Add support for smime-type MIME parameter in S/MIME messages which some
6546 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
6547 a threadsafe manner. Modify rsa code to use new function and add calls
6548 to dsa and dh code (which had race conditions before).
6551 *) Include the fixed error library code in the C error file definitions
6552 instead of fixing them up at runtime. This keeps the error code
6553 structures constant.
6556 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
6558 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
6561 *) Fixes for newer kerberos headers. NB: the casts are needed because
6562 the 'length' field is signed on one version and unsigned on another
6563 with no (?) obvious way to tell the difference, without these VC++
6564 complains. Also the "definition" of FAR (blank) is no longer included
6565 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
6566 some needed definitions.
6569 *) Undo Cygwin change.
6572 *) Added support for proxy certificates according to RFC 3820.
6573 Because they may be a security thread to unaware applications,
6574 they must be explicitly allowed in run-time. See
6575 docs/HOWTO/proxy_certificates.txt for further information.
6578 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
6580 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
6581 server and client random values. Previously
6582 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
6583 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
6585 This change has negligible security impact because:
6587 1. Server and client random values still have 24 bytes of pseudo random
6590 2. Server and client random values are sent in the clear in the initial
6593 3. The master secret is derived using the premaster secret (48 bytes in
6594 size for static RSA ciphersuites) as well as client server and random
6597 The OpenSSL team would like to thank the UK NISCC for bringing this issue
6600 [Stephen Henson, reported by UK NISCC]
6602 *) Use Windows randomness collection on Cygwin.
6605 *) Fix hang in EGD/PRNGD query when communication socket is closed
6606 prematurely by EGD/PRNGD.
6607 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
6609 *) Prompt for pass phrases when appropriate for PKCS12 input format.
6612 *) Back-port of selected performance improvements from development
6613 branch, as well as improved support for PowerPC platforms.
6616 *) Add lots of checks for memory allocation failure, error codes to indicate
6617 failure and freeing up memory if a failure occurs.
6618 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
6620 *) Add new -passin argument to dgst.
6623 *) Perform some character comparisons of different types in X509_NAME_cmp:
6624 this is needed for some certificates that re-encode DNs into UTF8Strings
6625 (in violation of RFC3280) and can't or won't issue name rollover
6629 *) Make an explicit check during certificate validation to see that
6630 the CA setting in each certificate on the chain is correct. As a
6631 side effect always do the following basic checks on extensions,
6632 not just when there's an associated purpose to the check:
6634 - if there is an unhandled critical extension (unless the user
6635 has chosen to ignore this fault)
6636 - if the path length has been exceeded (if one is set at all)
6637 - that certain extensions fit the associated purpose (if one has
6641 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
6643 *) Avoid a race condition when CRLs are checked in a multi threaded
6644 environment. This would happen due to the reordering of the revoked
6645 entries during signature checking and serial number lookup. Now the
6646 encoding is cached and the serial number sort performed under a lock.
6647 Add new STACK function sk_is_sorted().
6650 *) Add Delta CRL to the extension code.
6653 *) Various fixes to s3_pkt.c so alerts are sent properly.
6654 [David Holmes <d.holmes@f5.com>]
6656 *) Reduce the chances of duplicate issuer name and serial numbers (in
6657 violation of RFC3280) using the OpenSSL certificate creation utilities.
6658 This is done by creating a random 64 bit value for the initial serial
6659 number when a serial number file is created or when a self signed
6660 certificate is created using 'openssl req -x509'. The initial serial
6661 number file is created using 'openssl x509 -next_serial' in CA.pl
6662 rather than being initialized to 1.
6665 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
6667 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6668 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6669 [Joe Orton, Steve Henson]
6671 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
6673 [Joe Orton, Steve Henson]
6675 *) Make it possible to have multiple active certificates with the same
6676 subject in the CA index file. This is done only if the keyword
6677 'unique_subject' is set to 'no' in the main CA section (default
6678 if 'CA_default') of the configuration file. The value is saved
6679 with the database itself in a separate index attribute file,
6680 named like the index file with '.attr' appended to the name.
6683 *) X509 verify fixes. Disable broken certificate workarounds when
6684 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
6685 keyUsage extension present. Don't accept CRLs with unhandled critical
6686 extensions: since verify currently doesn't process CRL extensions this
6687 rejects a CRL with *any* critical extensions. Add new verify error codes
6691 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
6692 A clarification of RFC2560 will require the use of OCTET STRINGs and
6693 some implementations cannot handle the current raw format. Since OpenSSL
6694 copies and compares OCSP nonces as opaque blobs without any attempt at
6695 parsing them this should not create any compatibility issues.
6698 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
6699 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
6700 this HMAC (and other) operations are several times slower than OpenSSL
6704 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
6705 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
6707 *) Use the correct content when signing type "other".
6710 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
6712 *) Fix various bugs revealed by running the NISCC test suite:
6714 Stop out of bounds reads in the ASN1 code when presented with
6715 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6717 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
6719 If verify callback ignores invalid public key errors don't try to check
6720 certificate signature with the NULL public key.
6724 *) New -ignore_err option in ocsp application to stop the server
6725 exiting on the first error in a request.
6728 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6729 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6733 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6734 extra data after the compression methods not only for TLS 1.0
6735 but also for SSL 3.0 (as required by the specification).
6736 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6738 *) Change X509_certificate_type() to mark the key as exported/exportable
6739 when it's 512 *bits* long, not 512 bytes.
6742 *) Change AES_cbc_encrypt() so it outputs exact multiple of
6743 blocks during encryption.
6746 *) Various fixes to base64 BIO and non blocking I/O. On write
6747 flushes were not handled properly if the BIO retried. On read
6748 data was not being buffered properly and had various logic bugs.
6749 This also affects blocking I/O when the data being decoded is a
6753 *) Various S/MIME bugfixes and compatibility changes:
6754 output correct application/pkcs7 MIME type if
6755 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
6756 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
6757 of files as .eml work). Correctly handle very long lines in MIME
6761 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
6763 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6764 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6765 a protocol version number mismatch like a decryption error
6766 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6769 *) Turn on RSA blinding by default in the default implementation
6770 to avoid a timing attack. Applications that don't want it can call
6771 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6772 They would be ill-advised to do so in most cases.
6773 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6775 *) Change RSA blinding code so that it works when the PRNG is not
6776 seeded (in this case, the secret RSA exponent is abused as
6777 an unpredictable seed -- if it is not unpredictable, there
6778 is no point in blinding anyway). Make RSA blinding thread-safe
6779 by remembering the creator's thread ID in rsa->blinding and
6780 having all other threads use local one-time blinding factors
6781 (this requires more computation than sharing rsa->blinding, but
6782 avoids excessive locking; and if an RSA object is not shared
6783 between threads, blinding will still be very fast).
6786 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
6787 ENGINE as defaults for all supported algorithms irrespective of
6788 the 'flags' parameter. 'flags' is now honoured, so applications
6789 should make sure they are passing it correctly.
6792 *) Target "mingw" now allows native Windows code to be generated in
6793 the Cygwin environment as well as with the MinGW compiler.
6796 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
6798 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6799 via timing by performing a MAC computation even if incorrect
6800 block cipher padding has been found. This is a countermeasure
6801 against active attacks where the attacker has to distinguish
6802 between bad padding and a MAC verification error. (CVE-2003-0078)
6804 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6805 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6806 Martin Vuagnoux (EPFL, Ilion)]
6808 *) Make the no-err option work as intended. The intention with no-err
6809 is not to have the whole error stack handling routines removed from
6810 libcrypto, it's only intended to remove all the function name and
6811 reason texts, thereby removing some of the footprint that may not
6812 be interesting if those errors aren't displayed anyway.
6814 NOTE: it's still possible for any application or module to have it's
6815 own set of error texts inserted. The routines are there, just not
6816 used by default when no-err is given.
6819 *) Add support for FreeBSD on IA64.
6820 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
6822 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
6823 Kerberos function mit_des_cbc_cksum(). Before this change,
6824 the value returned by DES_cbc_cksum() was like the one from
6825 mit_des_cbc_cksum(), except the bytes were swapped.
6826 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
6828 *) Allow an application to disable the automatic SSL chain building.
6829 Before this a rather primitive chain build was always performed in
6830 ssl3_output_cert_chain(): an application had no way to send the
6831 correct chain if the automatic operation produced an incorrect result.
6833 Now the chain builder is disabled if either:
6835 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
6837 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
6839 The reasoning behind this is that an application would not want the
6840 auto chain building to take place if extra chain certificates are
6841 present and it might also want a means of sending no additional
6842 certificates (for example the chain has two certificates and the
6846 *) Add the possibility to build without the ENGINE framework.
6847 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
6849 *) Under Win32 gmtime() can return NULL: check return value in
6850 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
6853 *) DSA routines: under certain error conditions uninitialized BN objects
6854 could be freed. Solution: make sure initialization is performed early
6855 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
6856 Nils Larsch <nla@trustcenter.de> via PR#459)
6859 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
6860 checked on reconnect on the client side, therefore session resumption
6861 could still fail with a "ssl session id is different" error. This
6862 behaviour is masked when SSL_OP_ALL is used due to
6863 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
6864 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
6865 followup to PR #377.
6868 *) IA-32 assembler support enhancements: unified ELF targets, support
6869 for SCO/Caldera platforms, fix for Cygwin shared build.
6872 *) Add support for FreeBSD on sparc64. As a consequence, support for
6873 FreeBSD on non-x86 processors is separate from x86 processors on
6874 the config script, much like the NetBSD support.
6875 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
6877 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
6879 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
6882 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
6883 code (06) was taken as the first octet of the session ID and the last
6884 octet was ignored consequently. As a result SSLv2 client side session
6885 caching could not have worked due to the session ID mismatch between
6887 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
6891 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
6892 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
6896 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
6897 seems that in spite of existing for more than a year, many application
6898 author have done nothing to provide the necessary callbacks, which
6899 means that this particular engine will not work properly anywhere.
6900 This is a very unfortunate situation which forces us, in the name
6901 of usability, to give the hw_ncipher.c a static lock, which is part
6903 NOTE: This is for the 0.9.7 series ONLY. This hack will never
6904 appear in 0.9.8 or later. We EXPECT application authors to have
6905 dealt properly with this when 0.9.8 is released (unless we actually
6906 make such changes in the libcrypto locking code that changes will
6907 have to be made anyway).
6910 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
6911 octets have been read, EOF or an error occurs. Without this change
6912 some truncated ASN1 structures will not produce an error.
6915 *) Disable Heimdal support, since it hasn't been fully implemented.
6916 Still give the possibility to force the use of Heimdal, but with
6917 warnings and a request that patches get sent to openssl-dev.
6920 *) Add the VC-CE target, introduce the WINCE sysname, and add
6921 INSTALL.WCE and appropriate conditionals to make it build.
6922 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
6924 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
6925 cygssl-x.y.z.dll, where x, y and z are the major, minor and
6926 edit numbers of the version.
6927 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
6929 *) Introduce safe string copy and catenation functions
6930 (BUF_strlcpy() and BUF_strlcat()).
6931 [Ben Laurie (CHATS) and Richard Levitte]
6933 *) Avoid using fixed-size buffers for one-line DNs.
6934 [Ben Laurie (CHATS)]
6936 *) Add BUF_MEM_grow_clean() to avoid information leakage when
6937 resizing buffers containing secrets, and use where appropriate.
6938 [Ben Laurie (CHATS)]
6940 *) Avoid using fixed size buffers for configuration file location.
6941 [Ben Laurie (CHATS)]
6943 *) Avoid filename truncation for various CA files.
6944 [Ben Laurie (CHATS)]
6946 *) Use sizeof in preference to magic numbers.
6947 [Ben Laurie (CHATS)]
6949 *) Avoid filename truncation in cert requests.
6950 [Ben Laurie (CHATS)]
6952 *) Add assertions to check for (supposedly impossible) buffer
6954 [Ben Laurie (CHATS)]
6956 *) Don't cache truncated DNS entries in the local cache (this could
6957 potentially lead to a spoofing attack).
6958 [Ben Laurie (CHATS)]
6960 *) Fix various buffers to be large enough for hex/decimal
6961 representations in a platform independent manner.
6962 [Ben Laurie (CHATS)]
6964 *) Add CRYPTO_realloc_clean() to avoid information leakage when
6965 resizing buffers containing secrets, and use where appropriate.
6966 [Ben Laurie (CHATS)]
6968 *) Add BIO_indent() to avoid much slightly worrying code to do
6970 [Ben Laurie (CHATS)]
6972 *) Convert sprintf()/BIO_puts() to BIO_printf().
6973 [Ben Laurie (CHATS)]
6975 *) buffer_gets() could terminate with the buffer only half
6977 [Ben Laurie (CHATS)]
6979 *) Add assertions to prevent user-supplied crypto functions from
6980 overflowing internal buffers by having large block sizes, etc.
6981 [Ben Laurie (CHATS)]
6983 *) New OPENSSL_assert() macro (similar to assert(), but enabled
6985 [Ben Laurie (CHATS)]
6987 *) Eliminate unused copy of key in RC4.
6988 [Ben Laurie (CHATS)]
6990 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
6991 [Ben Laurie (CHATS)]
6993 *) Fix off-by-one error in EGD path.
6994 [Ben Laurie (CHATS)]
6996 *) If RANDFILE path is too long, ignore instead of truncating.
6997 [Ben Laurie (CHATS)]
6999 *) Eliminate unused and incorrectly sized X.509 structure
7001 [Ben Laurie (CHATS)]
7003 *) Eliminate unused and dangerous function knumber().
7004 [Ben Laurie (CHATS)]
7006 *) Eliminate unused and dangerous structure, KSSL_ERR.
7007 [Ben Laurie (CHATS)]
7009 *) Protect against overlong session ID context length in an encoded
7010 session object. Since these are local, this does not appear to be
7012 [Ben Laurie (CHATS)]
7014 *) Change from security patch (see 0.9.6e below) that did not affect
7015 the 0.9.6 release series:
7017 Remote buffer overflow in SSL3 protocol - an attacker could
7018 supply an oversized master key in Kerberos-enabled versions.
7020 [Ben Laurie (CHATS)]
7022 *) Change the SSL kerb5 codes to match RFC 2712.
7025 *) Make -nameopt work fully for req and add -reqopt switch.
7026 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
7028 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
7029 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
7031 *) Make sure tests can be performed even if the corresponding algorithms
7032 have been removed entirely. This was also the last step to make
7033 OpenSSL compilable with DJGPP under all reasonable conditions.
7034 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
7036 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
7037 to allow version independent disabling of normally unselected ciphers,
7038 which may be activated as a side-effect of selecting a single cipher.
7040 (E.g., cipher list string "RSA" enables ciphersuites that are left
7041 out of "ALL" because they do not provide symmetric encryption.
7042 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
7043 [Lutz Jaenicke, Bodo Moeller]
7045 *) Add appropriate support for separate platform-dependent build
7046 directories. The recommended way to make a platform-dependent
7047 build directory is the following (tested on Linux), maybe with
7050 # Place yourself outside of the OpenSSL source tree. In
7051 # this example, the environment variable OPENSSL_SOURCE
7052 # is assumed to contain the absolute OpenSSL source directory.
7053 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
7054 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
7055 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
7056 mkdir -p `dirname $F`
7057 ln -s $OPENSSL_SOURCE/$F $F
7060 To be absolutely sure not to disturb the source tree, a "make clean"
7061 is a good thing. If it isn't successful, don't worry about it,
7062 it probably means the source directory is very clean.
7065 *) Make sure any ENGINE control commands make local copies of string
7066 pointers passed to them whenever necessary. Otherwise it is possible
7067 the caller may have overwritten (or deallocated) the original string
7068 data when a later ENGINE operation tries to use the stored values.
7069 [Götz Babin-Ebell <babinebell@trustcenter.de>]
7071 *) Improve diagnostics in file reading and command-line digests.
7072 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
7074 *) Add AES modes CFB and OFB to the object database. Correct an
7075 error in AES-CFB decryption.
7078 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
7079 allows existing EVP_CIPHER_CTX structures to be reused after
7080 calling EVP_*Final(). This behaviour is used by encryption
7081 BIOs and some applications. This has the side effect that
7082 applications must explicitly clean up cipher contexts with
7083 EVP_CIPHER_CTX_cleanup() or they will leak memory.
7086 *) Check the values of dna and dnb in bn_mul_recursive before calling
7087 bn_mul_comba (a non zero value means the a or b arrays do not contain
7088 n2 elements) and fallback to bn_mul_normal if either is not zero.
7091 *) Fix escaping of non-ASCII characters when using the -subj option
7092 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
7095 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
7096 form for "surname", serialNumber has no short form.
7097 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
7098 therefore remove "mail" short name for "internet 7".
7099 The OID for unique identifiers in X509 certificates is
7100 x500UniqueIdentifier, not uniqueIdentifier.
7101 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
7104 *) Add an "init" command to the ENGINE config module and auto initialize
7105 ENGINEs. Without any "init" command the ENGINE will be initialized
7106 after all ctrl commands have been executed on it. If init=1 the
7107 ENGINE is initialized at that point (ctrls before that point are run
7108 on the uninitialized ENGINE and after on the initialized one). If
7109 init=0 then the ENGINE will not be initialized at all.
7112 *) Fix the 'app_verify_callback' interface so that the user-defined
7113 argument is actually passed to the callback: In the
7114 SSL_CTX_set_cert_verify_callback() prototype, the callback
7115 declaration has been changed from
7118 int (*cb)(X509_STORE_CTX *,void *);
7119 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
7120 i=s->ctx->app_verify_callback(&ctx)
7121 has been changed into
7122 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
7124 To update applications using SSL_CTX_set_cert_verify_callback(),
7125 a dummy argument can be added to their callback functions.
7126 [D. K. Smetters <smetters@parc.xerox.com>]
7128 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
7129 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
7131 *) Add and OPENSSL_LOAD_CONF define which will cause
7132 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
7133 This allows older applications to transparently support certain
7134 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
7135 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
7136 load the config file and OPENSSL_add_all_algorithms_conf() which will
7137 always load it have also been added.
7140 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
7141 Adjust NIDs and EVP layer.
7142 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7144 *) Config modules support in openssl utility.
7146 Most commands now load modules from the config file,
7147 though in a few (such as version) this isn't done
7148 because it couldn't be used for anything.
7150 In the case of ca and req the config file used is
7151 the same as the utility itself: that is the -config
7152 command line option can be used to specify an
7156 *) Move default behaviour from OPENSSL_config(). If appname is NULL
7157 use "openssl_conf" if filename is NULL use default openssl config file.
7160 *) Add an argument to OPENSSL_config() to allow the use of an alternative
7161 config section name. Add a new flag to tolerate a missing config file
7162 and move code to CONF_modules_load_file().
7165 *) Support for crypto accelerator cards from Accelerated Encryption
7166 Processing, www.aep.ie. (Use engine 'aep')
7167 The support was copied from 0.9.6c [engine] and adapted/corrected
7168 to work with the new engine framework.
7169 [AEP Inc. and Richard Levitte]
7171 *) Support for SureWare crypto accelerator cards from Baltimore
7172 Technologies. (Use engine 'sureware')
7173 The support was copied from 0.9.6c [engine] and adapted
7174 to work with the new engine framework.
7177 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
7178 make the newer ENGINE framework commands for the CHIL engine work.
7179 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
7181 *) Make it possible to produce shared libraries on ReliantUNIX.
7182 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
7184 *) Add the configuration target debug-linux-ppro.
7185 Make 'openssl rsa' use the general key loading routines
7186 implemented in apps.c, and make those routines able to
7187 handle the key format FORMAT_NETSCAPE and the variant
7189 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7191 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7192 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7194 *) Add -keyform to rsautl, and document -engine.
7195 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
7197 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
7198 BIO_R_NO_SUCH_FILE error code rather than the generic
7199 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
7202 *) Add new functions
7204 ERR_peek_last_error_line
7205 ERR_peek_last_error_line_data.
7206 These are similar to
7209 ERR_peek_error_line_data,
7210 but report on the latest error recorded rather than the first one
7211 still in the error queue.
7212 [Ben Laurie, Bodo Moeller]
7214 *) default_algorithms option in ENGINE config module. This allows things
7216 default_algorithms = ALL
7217 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
7220 *) Preliminary ENGINE config module.
7223 *) New experimental application configuration code.
7226 *) Change the AES code to follow the same name structure as all other
7227 symmetric ciphers, and behave the same way. Move everything to
7228 the directory crypto/aes, thereby obsoleting crypto/rijndael.
7229 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7231 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
7232 [Ben Laurie and Theo de Raadt]
7234 *) Add option to output public keys in req command.
7235 [Massimiliano Pala madwolf@openca.org]
7237 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
7238 (up to about 10% better than before for P-192 and P-224).
7241 *) New functions/macros
7243 SSL_CTX_set_msg_callback(ctx, cb)
7244 SSL_CTX_set_msg_callback_arg(ctx, arg)
7245 SSL_set_msg_callback(ssl, cb)
7246 SSL_set_msg_callback_arg(ssl, arg)
7248 to request calling a callback function
7250 void cb(int write_p, int version, int content_type,
7251 const void *buf, size_t len, SSL *ssl, void *arg)
7253 whenever a protocol message has been completely received
7254 (write_p == 0) or sent (write_p == 1). Here 'version' is the
7255 protocol version according to which the SSL library interprets
7256 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
7257 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
7258 the content type as defined in the SSL 3.0/TLS 1.0 protocol
7259 specification (change_cipher_spec(20), alert(21), handshake(22)).
7260 'buf' and 'len' point to the actual message, 'ssl' to the
7261 SSL object, and 'arg' is the application-defined value set by
7262 SSL[_CTX]_set_msg_callback_arg().
7264 'openssl s_client' and 'openssl s_server' have new '-msg' options
7265 to enable a callback that displays all protocol messages.
7268 *) Change the shared library support so shared libraries are built as
7269 soon as the corresponding static library is finished, and thereby get
7270 openssl and the test programs linked against the shared library.
7271 This still only happens when the keyword "shard" has been given to
7272 the configuration scripts.
7274 NOTE: shared library support is still an experimental thing, and
7275 backward binary compatibility is still not guaranteed.
7276 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
7278 *) Add support for Subject Information Access extension.
7279 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7281 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
7282 additional bytes when new memory had to be allocated, not just
7283 when reusing an existing buffer.
7286 *) New command line and configuration option 'utf8' for the req command.
7287 This allows field values to be specified as UTF8 strings.
7290 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
7291 runs for the former and machine-readable output for the latter.
7294 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
7295 of the e-mail address in the DN (i.e., it will go into a certificate
7296 extension only). The new configuration file option 'email_in_dn = no'
7297 has the same effect.
7298 [Massimiliano Pala madwolf@openca.org]
7300 *) Change all functions with names starting with des_ to be starting
7301 with DES_ instead. Add wrappers that are compatible with libdes,
7302 but are named _ossl_old_des_*. Finally, add macros that map the
7303 des_* symbols to the corresponding _ossl_old_des_* if libdes
7304 compatibility is desired. If OpenSSL 0.9.6c compatibility is
7305 desired, the des_* symbols will be mapped to DES_*, with one
7308 Since we provide two compatibility mappings, the user needs to
7309 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
7310 compatibility is desired. The default (i.e., when that macro
7311 isn't defined) is OpenSSL 0.9.6c compatibility.
7313 There are also macros that enable and disable the support of old
7314 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
7315 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
7316 are defined, the default will apply: to support the old des routines.
7318 In either case, one must include openssl/des.h to get the correct
7319 definitions. Do not try to just include openssl/des_old.h, that
7322 NOTE: This is a major break of an old API into a new one. Software
7323 authors are encouraged to switch to the DES_ style functions. Some
7324 time in the future, des_old.h and the libdes compatibility functions
7325 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
7326 default), and then completely removed.
7329 *) Test for certificates which contain unsupported critical extensions.
7330 If such a certificate is found during a verify operation it is
7331 rejected by default: this behaviour can be overridden by either
7332 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
7333 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
7334 X509_supported_extension() has also been added which returns 1 if a
7335 particular extension is supported.
7338 *) Modify the behaviour of EVP cipher functions in similar way to digests
7339 to retain compatibility with existing code.
7342 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
7343 compatibility with existing code. In particular the 'ctx' parameter does
7344 not have to be to be initialized before the call to EVP_DigestInit() and
7345 it is tidied up after a call to EVP_DigestFinal(). New function
7346 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
7347 EVP_MD_CTX_copy() changed to not require the destination to be
7348 initialized valid and new function EVP_MD_CTX_copy_ex() added which
7349 requires the destination to be valid.
7351 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
7352 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
7355 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
7356 so that complete 'Handshake' protocol structures are kept in memory
7357 instead of overwriting 'msg_type' and 'length' with 'body' data.
7360 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
7361 [Massimo Santin via Richard Levitte]
7363 *) Major restructuring to the underlying ENGINE code. This includes
7364 reduction of linker bloat, separation of pure "ENGINE" manipulation
7365 (initialisation, etc) from functionality dealing with implementations
7366 of specific crypto interfaces. This change also introduces integrated
7367 support for symmetric ciphers and digest implementations - so ENGINEs
7368 can now accelerate these by providing EVP_CIPHER and EVP_MD
7369 implementations of their own. This is detailed in crypto/engine/README
7370 as it couldn't be adequately described here. However, there are a few
7371 API changes worth noting - some RSA, DSA, DH, and RAND functions that
7372 were changed in the original introduction of ENGINE code have now
7373 reverted back - the hooking from this code to ENGINE is now a good
7374 deal more passive and at run-time, operations deal directly with
7375 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
7376 dereferencing through an ENGINE pointer any more. Also, the ENGINE
7377 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
7378 they were not being used by the framework as there is no concept of a
7379 BIGNUM_METHOD and they could not be generalised to the new
7380 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
7381 ENGINE_cpy() has been removed as it cannot be consistently defined in
7385 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
7388 *) Change mkdef.pl to sort symbols that get the same entry number,
7389 and make sure the automatically generated functions ERR_load_*
7390 become part of libeay.num as well.
7393 *) New function SSL_renegotiate_pending(). This returns true once
7394 renegotiation has been requested (either SSL_renegotiate() call
7395 or HelloRequest/ClientHello received from the peer) and becomes
7396 false once a handshake has been completed.
7397 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
7398 sends a HelloRequest, but does not ensure that a handshake takes
7399 place. SSL_renegotiate_pending() is useful for checking if the
7400 client has followed the request.)
7403 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
7404 By default, clients may request session resumption even during
7405 renegotiation (if session ID contexts permit); with this option,
7406 session resumption is possible only in the first handshake.
7408 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
7409 more bits available for options that should not be part of
7410 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
7413 *) Add some demos for certificate and certificate request creation.
7416 *) Make maximum certificate chain size accepted from the peer application
7417 settable (SSL*_get/set_max_cert_list()), as proposed by
7418 "Douglas E. Engert" <deengert@anl.gov>.
7421 *) Add support for shared libraries for Unixware-7
7422 (Boyd Lynn Gerber <gerberb@zenez.com>).
7425 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
7426 be done prior to destruction. Use this to unload error strings from
7427 ENGINEs that load their own error strings. NB: This adds two new API
7428 functions to "get" and "set" this destroy handler in an ENGINE.
7431 *) Alter all existing ENGINE implementations (except "openssl" and
7432 "openbsd") to dynamically instantiate their own error strings. This
7433 makes them more flexible to be built both as statically-linked ENGINEs
7434 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
7435 Also, add stub code to each that makes building them as self-contained
7436 shared-libraries easier (see README.ENGINE).
7439 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
7440 implementations into applications that are completely implemented in
7441 self-contained shared-libraries. The "dynamic" ENGINE exposes control
7442 commands that can be used to configure what shared-library to load and
7443 to control aspects of the way it is handled. Also, made an update to
7444 the README.ENGINE file that brings its information up-to-date and
7445 provides some information and instructions on the "dynamic" ENGINE
7446 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
7449 *) Make it possible to unload ranges of ERR strings with a new
7450 "ERR_unload_strings" function.
7453 *) Add a copy() function to EVP_MD.
7456 *) Make EVP_MD routines take a context pointer instead of just the
7457 md_data void pointer.
7460 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
7461 that the digest can only process a single chunk of data
7462 (typically because it is provided by a piece of
7463 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
7464 is only going to provide a single chunk of data, and hence the
7465 framework needn't accumulate the data for oneshot drivers.
7468 *) As with "ERR", make it possible to replace the underlying "ex_data"
7469 functions. This change also alters the storage and management of global
7470 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
7471 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
7472 index counters. The API functions that use this state have been changed
7473 to take a "class_index" rather than pointers to the class's local STACK
7474 and counter, and there is now an API function to dynamically create new
7475 classes. This centralisation allows us to (a) plug a lot of the
7476 thread-safety problems that existed, and (b) makes it possible to clean
7477 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
7478 such data would previously have always leaked in application code and
7479 workarounds were in place to make the memory debugging turn a blind eye
7480 to it. Application code that doesn't use this new function will still
7481 leak as before, but their memory debugging output will announce it now
7482 rather than letting it slide.
7484 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
7485 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
7486 has a return value to indicate success or failure.
7489 *) Make it possible to replace the underlying "ERR" functions such that the
7490 global state (2 LHASH tables and 2 locks) is only used by the "default"
7491 implementation. This change also adds two functions to "get" and "set"
7492 the implementation prior to it being automatically set the first time
7493 any other ERR function takes place. Ie. an application can call "get",
7494 pass the return value to a module it has just loaded, and that module
7495 can call its own "set" function using that value. This means the
7496 module's "ERR" operations will use (and modify) the error state in the
7497 application and not in its own statically linked copy of OpenSSL code.
7500 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
7501 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
7502 the operation, and provides a more encapsulated way for external code
7503 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
7504 to use these functions rather than manually incrementing the counts.
7506 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
7509 *) Add EVP test program.
7512 *) Add symmetric cipher support to ENGINE. Expect the API to change!
7515 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
7516 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
7517 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
7518 These allow a CRL to be built without having to access X509_CRL fields
7519 directly. Modify 'ca' application to use new functions.
7522 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
7523 bug workarounds. Rollback attack detection is a security feature.
7524 The problem will only arise on OpenSSL servers when TLSv1 is not
7525 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
7526 Software authors not wanting to support TLSv1 will have special reasons
7527 for their choice and can explicitly enable this option.
7528 [Bodo Moeller, Lutz Jaenicke]
7530 *) Rationalise EVP so it can be extended: don't include a union of
7531 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
7532 (similar to those existing for EVP_CIPHER_CTX).
7537 EVP_MD_CTX_init(&md); /* new function call */
7538 EVP_DigestInit(&md, EVP_sha1());
7539 EVP_DigestUpdate(&md, in, len);
7540 EVP_DigestFinal(&md, out, NULL);
7541 EVP_MD_CTX_cleanup(&md); /* new function call */
7545 *) Make DES key schedule conform to the usual scheme, as well as
7546 correcting its structure. This means that calls to DES functions
7547 now have to pass a pointer to a des_key_schedule instead of a
7548 plain des_key_schedule (which was actually always a pointer
7551 des_key_schedule ks;
7553 des_set_key_checked(..., &ks);
7554 des_ncbc_encrypt(..., &ks, ...);
7556 (Note that a later change renames 'des_...' into 'DES_...'.)
7559 *) Initial reduction of linker bloat: the use of some functions, such as
7560 PEM causes large amounts of unused functions to be linked in due to
7561 poor organisation. For example pem_all.c contains every PEM function
7562 which has a knock on effect of linking in large amounts of (unused)
7563 ASN1 code. Grouping together similar functions and splitting unrelated
7564 functions prevents this.
7567 *) Cleanup of EVP macros.
7570 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
7571 correct _ecb suffix.
7574 *) Add initial OCSP responder support to ocsp application. The
7575 revocation information is handled using the text based index
7576 use by the ca application. The responder can either handle
7577 requests generated internally, supplied in files (for example
7578 via a CGI script) or using an internal minimal server.
7581 *) Add configuration choices to get zlib compression for TLS.
7584 *) Changes to Kerberos SSL for RFC 2712 compliance:
7585 1. Implemented real KerberosWrapper, instead of just using
7586 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
7587 2. Implemented optional authenticator field of KerberosWrapper.
7589 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
7590 and authenticator structs; see crypto/krb5/.
7592 Generalized Kerberos calls to support multiple Kerberos libraries.
7593 [Vern Staats <staatsvr@asc.hpc.mil>,
7594 Jeffrey Altman <jaltman@columbia.edu>
7595 via Richard Levitte]
7597 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
7598 already does with RSA. testdsa.h now has 'priv_key/pub_key'
7599 values for each of the key sizes rather than having just
7600 parameters (and 'speed' generating keys each time).
7603 *) Speed up EVP routines.
7606 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
7607 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
7608 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
7609 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
7611 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
7612 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
7613 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
7616 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
7618 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
7621 *) Added the OS2-EMX target.
7622 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
7624 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
7625 to support NCONF routines in extension code. New function CONF_set_nconf()
7626 to allow functions which take an NCONF to also handle the old LHASH
7627 structure: this means that the old CONF compatible routines can be
7628 retained (in particular wrt extensions) without having to duplicate the
7629 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
7632 *) Enhance the general user interface with mechanisms for inner control
7633 and with possibilities to have yes/no kind of prompts.
7636 *) Change all calls to low level digest routines in the library and
7637 applications to use EVP. Add missing calls to HMAC_cleanup() and
7638 don't assume HMAC_CTX can be copied using memcpy().
7639 [Verdon Walker <VWalker@novell.com>, Steve Henson]
7641 *) Add the possibility to control engines through control names but with
7642 arbitrary arguments instead of just a string.
7643 Change the key loaders to take a UI_METHOD instead of a callback
7644 function pointer. NOTE: this breaks binary compatibility with earlier
7645 versions of OpenSSL [engine].
7646 Adapt the nCipher code for these new conditions and add a card insertion
7650 *) Enhance the general user interface with mechanisms to better support
7651 dialog box interfaces, application-defined prompts, the possibility
7652 to use defaults (for example default passwords from somewhere else)
7653 and interrupts/cancellations.
7656 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
7657 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
7660 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
7661 tidy up some unnecessarily weird code in 'sk_new()').
7662 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
7664 *) Change the key loading routines for ENGINEs to use the same kind
7665 callback (pem_password_cb) as all other routines that need this
7669 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
7670 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
7671 than this minimum value is recommended.
7674 *) New random seeder for OpenVMS, using the system process statistics
7675 that are easily reachable.
7678 *) Windows apparently can't transparently handle global
7679 variables defined in DLLs. Initialisations such as:
7681 const ASN1_ITEM *it = &ASN1_INTEGER_it;
7683 won't compile. This is used by the any applications that need to
7684 declare their own ASN1 modules. This was fixed by adding the option
7685 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
7686 needed for static libraries under Win32.
7689 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
7690 setting of purpose and trust fields. New X509_STORE trust and
7691 purpose functions and tidy up setting in other SSL functions.
7694 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
7695 structure. These are inherited by X509_STORE_CTX when it is
7696 initialised. This allows various defaults to be set in the
7697 X509_STORE structure (such as flags for CRL checking and custom
7698 purpose or trust settings) for functions which only use X509_STORE_CTX
7699 internally such as S/MIME.
7701 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
7702 trust settings if they are not set in X509_STORE. This allows X509_STORE
7703 purposes and trust (in S/MIME for example) to override any set by default.
7705 Add command line options for CRL checking to smime, s_client and s_server
7709 *) Initial CRL based revocation checking. If the CRL checking flag(s)
7710 are set then the CRL is looked up in the X509_STORE structure and
7711 its validity and signature checked, then if the certificate is found
7712 in the CRL the verify fails with a revoked error.
7714 Various new CRL related callbacks added to X509_STORE_CTX structure.
7716 Command line options added to 'verify' application to support this.
7718 This needs some additional work, such as being able to handle multiple
7719 CRLs with different times, extension based lookup (rather than just
7720 by subject name) and ultimately more complete V2 CRL extension
7724 *) Add a general user interface API (crypto/ui/). This is designed
7725 to replace things like des_read_password and friends (backward
7726 compatibility functions using this new API are provided).
7727 The purpose is to remove prompting functions from the DES code
7728 section as well as provide for prompting through dialog boxes in
7729 a window system and the like.
7732 *) Add "ex_data" support to ENGINE so implementations can add state at a
7733 per-structure level rather than having to store it globally.
7736 *) Make it possible for ENGINE structures to be copied when retrieved by
7737 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
7738 This causes the "original" ENGINE structure to act like a template,
7739 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
7740 operational state can be localised to each ENGINE structure, despite the
7741 fact they all share the same "methods". New ENGINE structures returned in
7742 this case have no functional references and the return value is the single
7743 structural reference. This matches the single structural reference returned
7744 by ENGINE_by_id() normally, when it is incremented on the pre-existing
7748 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
7749 needs to match any other type at all we need to manually clear the
7753 *) Changes to the "openssl engine" utility to include;
7754 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
7755 about an ENGINE's available control commands.
7756 - executing control commands from command line arguments using the
7757 '-pre' and '-post' switches. '-post' is only used if '-t' is
7758 specified and the ENGINE is successfully initialised. The syntax for
7759 the individual commands are colon-separated, for example;
7760 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
7763 *) New dynamic control command support for ENGINEs. ENGINEs can now
7764 declare their own commands (numbers), names (strings), descriptions,
7765 and input types for run-time discovery by calling applications. A
7766 subset of these commands are implicitly classed as "executable"
7767 depending on their input type, and only these can be invoked through
7768 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
7769 can be based on user input, config files, etc). The distinction is
7770 that "executable" commands cannot return anything other than a boolean
7771 result and can only support numeric or string input, whereas some
7772 discoverable commands may only be for direct use through
7773 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
7774 pointers, or other custom uses. The "executable" commands are to
7775 support parameterisations of ENGINE behaviour that can be
7776 unambiguously defined by ENGINEs and used consistently across any
7777 OpenSSL-based application. Commands have been added to all the
7778 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
7779 control over shared-library paths without source code alterations.
7782 *) Changed all ENGINE implementations to dynamically allocate their
7783 ENGINEs rather than declaring them statically. Apart from this being
7784 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
7785 this also allows the implementations to compile without using the
7786 internal engine_int.h header.
7789 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
7790 'const' value. Any code that should be able to modify a RAND_METHOD
7791 should already have non-const pointers to it (ie. they should only
7792 modify their own ones).
7795 *) Made a variety of little tweaks to the ENGINE code.
7796 - "atalla" and "ubsec" string definitions were moved from header files
7797 to C code. "nuron" string definitions were placed in variables
7798 rather than hard-coded - allowing parameterisation of these values
7799 later on via ctrl() commands.
7800 - Removed unused "#if 0"'d code.
7801 - Fixed engine list iteration code so it uses ENGINE_free() to release
7802 structural references.
7803 - Constified the RAND_METHOD element of ENGINE structures.
7804 - Constified various get/set functions as appropriate and added
7805 missing functions (including a catch-all ENGINE_cpy that duplicates
7806 all ENGINE values onto a new ENGINE except reference counts/state).
7807 - Removed NULL parameter checks in get/set functions. Setting a method
7808 or function to NULL is a way of cancelling out a previously set
7809 value. Passing a NULL ENGINE parameter is just plain stupid anyway
7810 and doesn't justify the extra error symbols and code.
7811 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
7812 flags from engine_int.h to engine.h.
7813 - Changed prototypes for ENGINE handler functions (init(), finish(),
7814 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
7817 *) Implement binary inversion algorithm for BN_mod_inverse in addition
7818 to the algorithm using long division. The binary algorithm can be
7819 used only if the modulus is odd. On 32-bit systems, it is faster
7820 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
7821 roughly 5-15% for 256-bit moduli), so we use it only for moduli
7822 up to 450 bits. In 64-bit environments, the binary algorithm
7823 appears to be advantageous for much longer moduli; here we use it
7824 for moduli up to 2048 bits.
7827 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
7828 could not support the combine flag in choice fields.
7831 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
7832 extensions from a certificate request to the certificate.
7835 *) Allow multiple 'certopt' and 'nameopt' options to be separated
7836 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
7837 file: this allows the display of the certificate about to be
7838 signed to be customised, to allow certain fields to be included
7839 or excluded and extension details. The old system didn't display
7840 multicharacter strings properly, omitted fields not in the policy
7841 and couldn't display additional details such as extensions.
7844 *) Function EC_POINTs_mul for multiple scalar multiplication
7845 of an arbitrary number of elliptic curve points
7846 \sum scalars[i]*points[i],
7847 optionally including the generator defined for the EC_GROUP:
7848 scalar*generator + \sum scalars[i]*points[i].
7850 EC_POINT_mul is a simple wrapper function for the typical case
7851 that the point list has just one item (besides the optional
7855 *) First EC_METHODs for curves over GF(p):
7857 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
7858 operations and provides various method functions that can also
7859 operate with faster implementations of modular arithmetic.
7861 EC_GFp_mont_method() reuses most functions that are part of
7862 EC_GFp_simple_method, but uses Montgomery arithmetic.
7864 [Bodo Moeller; point addition and point doubling
7865 implementation directly derived from source code provided by
7866 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
7868 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
7869 crypto/ec/ec_lib.c):
7871 Curves are EC_GROUP objects (with an optional group generator)
7872 based on EC_METHODs that are built into the library.
7874 Points are EC_POINT objects based on EC_GROUP objects.
7876 Most of the framework would be able to handle curves over arbitrary
7877 finite fields, but as there are no obvious types for fields other
7878 than GF(p), some functions are limited to that for now.
7881 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
7882 that the file contains a complete HTTP response.
7885 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
7886 change the def and num file printf format specifier from "%-40sXXX"
7887 to "%-39s XXX". The latter will always guarantee a space after the
7888 field while the former will cause them to run together if the field
7889 is 40 of more characters long.
7892 *) Constify the cipher and digest 'method' functions and structures
7893 and modify related functions to take constant EVP_MD and EVP_CIPHER
7897 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
7898 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
7901 *) Modify EVP_Digest*() routines so they now return values. Although the
7902 internal software routines can never fail additional hardware versions
7906 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
7908 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
7909 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
7912 ERR_R_NESTED_ASN1_ERROR
7914 ERR_R_MISSING_ASN1_EOS
7915 were 4 .. 9, conflicting with
7916 ERR_LIB_RSA (= ERR_R_RSA_LIB)
7918 ERR_LIB_PEM (= ERR_R_PEM_LIB).
7919 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
7921 Add new error code 'ERR_R_INTERNAL_ERROR'.
7924 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
7928 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
7929 sets the subject name for a new request or supersedes the
7930 subject name in a given request. Formats that can be parsed are
7931 'CN=Some Name, OU=myOU, C=IT'
7933 'CN=Some Name/OU=myOU/C=IT'.
7935 Add options '-batch' and '-verbose' to 'openssl req'.
7936 [Massimiliano Pala <madwolf@hackmasters.net>]
7938 *) Introduce the possibility to access global variables through
7939 functions on platform were that's the best way to handle exporting
7940 global variables in shared libraries. To enable this functionality,
7941 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
7942 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
7943 is normally done by Configure or something similar).
7945 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
7946 in the source file (foo.c) like this:
7948 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
7949 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
7951 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
7952 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
7954 OPENSSL_DECLARE_GLOBAL(int,foo);
7955 #define foo OPENSSL_GLOBAL_REF(foo)
7956 OPENSSL_DECLARE_GLOBAL(double,bar);
7957 #define bar OPENSSL_GLOBAL_REF(bar)
7959 The #defines are very important, and therefore so is including the
7960 header file everywhere where the defined globals are used.
7962 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
7963 of ASN.1 items, but that structure is a bit different.
7965 The largest change is in util/mkdef.pl which has been enhanced with
7966 better and easier to understand logic to choose which symbols should
7967 go into the Windows .def files as well as a number of fixes and code
7968 cleanup (among others, algorithm keywords are now sorted
7969 lexicographically to avoid constant rewrites).
7972 *) In BN_div() keep a copy of the sign of 'num' before writing the
7973 result to 'rm' because if rm==num the value will be overwritten
7974 and produce the wrong result if 'num' is negative: this caused
7975 problems with BN_mod() and BN_nnmod().
7978 *) Function OCSP_request_verify(). This checks the signature on an
7979 OCSP request and verifies the signer certificate. The signer
7980 certificate is just checked for a generic purpose and OCSP request
7984 *) Add OCSP_check_validity() function to check the validity of OCSP
7985 responses. OCSP responses are prepared in real time and may only
7986 be a few seconds old. Simply checking that the current time lies
7987 between thisUpdate and nextUpdate max reject otherwise valid responses
7988 caused by either OCSP responder or client clock inaccuracy. Instead
7989 we allow thisUpdate and nextUpdate to fall within a certain period of
7990 the current time. The age of the response can also optionally be
7991 checked. Two new options -validity_period and -status_age added to
7995 *) If signature or public key algorithm is unrecognized print out its
7996 OID rather that just UNKNOWN.
7999 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
8000 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
8001 ID to be generated from the issuer certificate alone which can then be
8002 passed to OCSP_id_issuer_cmp().
8005 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
8006 ASN1 modules to export functions returning ASN1_ITEM pointers
8007 instead of the ASN1_ITEM structures themselves. This adds several
8008 new macros which allow the underlying ASN1 function/structure to
8009 be accessed transparently. As a result code should not use ASN1_ITEM
8010 references directly (such as &X509_it) but instead use the relevant
8011 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
8012 use of the new ASN1 code on platforms where exporting structures
8013 is problematical (for example in shared libraries) but exporting
8014 functions returning pointers to structures is not.
8017 *) Add support for overriding the generation of SSL/TLS session IDs.
8018 These callbacks can be registered either in an SSL_CTX or per SSL.
8019 The purpose of this is to allow applications to control, if they wish,
8020 the arbitrary values chosen for use as session IDs, particularly as it
8021 can be useful for session caching in multiple-server environments. A
8022 command-line switch for testing this (and any client code that wishes
8023 to use such a feature) has been added to "s_server".
8024 [Geoff Thorpe, Lutz Jaenicke]
8026 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
8027 of the form '#if defined(...) || defined(...) || ...' and
8028 '#if !defined(...) && !defined(...) && ...'. This also avoids
8029 the growing number of special cases it was previously handling.
8032 *) Make all configuration macros available for application by making
8033 sure they are available in opensslconf.h, by giving them names starting
8034 with "OPENSSL_" to avoid conflicts with other packages and by making
8035 sure e_os2.h will cover all platform-specific cases together with
8037 Additionally, it is now possible to define configuration/platform-
8038 specific names (called "system identities"). In the C code, these
8039 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
8040 macro with the name beginning with "OPENSSL_SYS_", which is determined
8041 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
8045 *) New option -set_serial to 'req' and 'x509' this allows the serial
8046 number to use to be specified on the command line. Previously self
8047 signed certificates were hard coded with serial number 0 and the
8048 CA options of 'x509' had to use a serial number in a file which was
8052 *) New options to 'ca' utility to support V2 CRL entry extensions.
8053 Currently CRL reason, invalidity date and hold instruction are
8054 supported. Add new CRL extensions to V3 code and some new objects.
8057 *) New function EVP_CIPHER_CTX_set_padding() this is used to
8058 disable standard block padding (aka PKCS#5 padding) in the EVP
8059 API, which was previously mandatory. This means that the data is
8060 not padded in any way and so the total length much be a multiple
8061 of the block size, otherwise an error occurs.
8064 *) Initial (incomplete) OCSP SSL support.
8067 *) New function OCSP_parse_url(). This splits up a URL into its host,
8068 port and path components: primarily to parse OCSP URLs. New -url
8069 option to ocsp utility.
8072 *) New nonce behavior. The return value of OCSP_check_nonce() now
8073 reflects the various checks performed. Applications can decide
8074 whether to tolerate certain situations such as an absent nonce
8075 in a response when one was present in a request: the ocsp application
8076 just prints out a warning. New function OCSP_add1_basic_nonce()
8077 this is to allow responders to include a nonce in a response even if
8078 the request is nonce-less.
8081 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
8082 skipped when using openssl x509 multiple times on a single input file,
8083 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
8086 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
8087 set string type: to handle setting ASN1_TIME structures. Fix ca
8088 utility to correctly initialize revocation date of CRLs.
8091 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
8092 the clients preferred ciphersuites and rather use its own preferences.
8093 Should help to work around M$ SGC (Server Gated Cryptography) bug in
8094 Internet Explorer by ensuring unchanged hash method during stepup.
8095 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
8098 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
8099 to aes and add a new 'exist' option to print out symbols that don't
8103 *) Additional options to ocsp utility to allow flags to be set and
8104 additional certificates supplied.
8107 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
8108 OCSP client a number of certificate to only verify the response
8112 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
8113 handle the new API. Currently only ECB, CBC modes supported. Add new
8116 Add TLS AES ciphersuites as described in RFC3268, "Advanced
8117 Encryption Standard (AES) Ciphersuites for Transport Layer
8118 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
8119 not enabled by default and were not part of the "ALL" ciphersuite
8120 alias because they were not yet official; they could be
8121 explicitly requested by specifying the "AESdraft" ciphersuite
8122 group alias. In the final release of OpenSSL 0.9.7, the group
8123 alias is called "AES" and is part of "ALL".)
8124 [Ben Laurie, Steve Henson, Bodo Moeller]
8126 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
8127 request to response.
8130 *) Functions for OCSP responders. OCSP_request_onereq_count(),
8131 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
8132 extract information from a certificate request. OCSP_response_create()
8133 creates a response and optionally adds a basic response structure.
8134 OCSP_basic_add1_status() adds a complete single response to a basic
8135 response and returns the OCSP_SINGLERESP structure just added (to allow
8136 extensions to be included for example). OCSP_basic_add1_cert() adds a
8137 certificate to a basic response and OCSP_basic_sign() signs a basic
8138 response with various flags. New helper functions ASN1_TIME_check()
8139 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
8140 (converts ASN1_TIME to GeneralizedTime).
8143 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
8144 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
8145 structure from a certificate. X509_pubkey_digest() digests the public_key
8146 contents: this is used in various key identifiers.
8149 *) Make sk_sort() tolerate a NULL argument.
8150 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
8152 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
8153 passed by the function are trusted implicitly. If any of them signed the
8154 response then it is assumed to be valid and is not verified.
8157 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
8158 to data. This was previously part of the PKCS7 ASN1 code. This
8159 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
8160 [Steve Henson, reported by Kenneth R. Robinette
8161 <support@securenetterm.com>]
8163 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
8164 routines: without these tracing memory leaks is very painful.
8165 Fix leaks in PKCS12 and PKCS7 routines.
8168 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
8169 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
8170 effectively meant GeneralizedTime would never be used. Now it
8171 is initialised to -1 but X509_time_adj() now has to check the value
8172 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
8173 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
8174 [Steve Henson, reported by Kenneth R. Robinette
8175 <support@securenetterm.com>]
8177 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
8178 result in a zero length in the ASN1_INTEGER structure which was
8179 not consistent with the structure when d2i_ASN1_INTEGER() was used
8180 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
8181 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
8182 where it did not print out a minus for negative ASN1_INTEGER.
8185 *) Add summary printout to ocsp utility. The various functions which
8186 convert status values to strings have been renamed to:
8187 OCSP_response_status_str(), OCSP_cert_status_str() and
8188 OCSP_crl_reason_str() and are no longer static. New options
8189 to verify nonce values and to disable verification. OCSP response
8190 printout format cleaned up.
8193 *) Add additional OCSP certificate checks. These are those specified
8194 in RFC2560. This consists of two separate checks: the CA of the
8195 certificate being checked must either be the OCSP signer certificate
8196 or the issuer of the OCSP signer certificate. In the latter case the
8197 OCSP signer certificate must contain the OCSP signing extended key
8198 usage. This check is performed by attempting to match the OCSP
8199 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
8200 in the OCSP_CERTID structures of the response.
8203 *) Initial OCSP certificate verification added to OCSP_basic_verify()
8204 and related routines. This uses the standard OpenSSL certificate
8205 verify routines to perform initial checks (just CA validity) and
8206 to obtain the certificate chain. Then additional checks will be
8207 performed on the chain. Currently the root CA is checked to see
8208 if it is explicitly trusted for OCSP signing. This is used to set
8209 a root CA as a global signing root: that is any certificate that
8210 chains to that CA is an acceptable OCSP signing certificate.
8213 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
8214 extensions from a separate configuration file.
8215 As when reading extensions from the main configuration file,
8216 the '-extensions ...' option may be used for specifying the
8218 [Massimiliano Pala <madwolf@comune.modena.it>]
8220 *) New OCSP utility. Allows OCSP requests to be generated or
8221 read. The request can be sent to a responder and the output
8222 parsed, outputed or printed in text form. Not complete yet:
8223 still needs to check the OCSP response validity.
8226 *) New subcommands for 'openssl ca':
8227 'openssl ca -status <serial>' prints the status of the cert with
8228 the given serial number (according to the index file).
8229 'openssl ca -updatedb' updates the expiry status of certificates
8231 [Massimiliano Pala <madwolf@comune.modena.it>]
8233 *) New '-newreq-nodes' command option to CA.pl. This is like
8234 '-newreq', but calls 'openssl req' with the '-nodes' option
8235 so that the resulting key is not encrypted.
8236 [Damien Miller <djm@mindrot.org>]
8238 *) New configuration for the GNU Hurd.
8239 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
8241 *) Initial code to implement OCSP basic response verify. This
8242 is currently incomplete. Currently just finds the signer's
8243 certificate and verifies the signature on the response.
8246 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
8247 value of OPENSSLDIR. This is available via the new '-d' option
8248 to 'openssl version', and is also included in 'openssl version -a'.
8251 *) Allowing defining memory allocation callbacks that will be given
8252 file name and line number information in additional arguments
8253 (a const char* and an int). The basic functionality remains, as
8254 well as the original possibility to just replace malloc(),
8255 realloc() and free() by functions that do not know about these
8256 additional arguments. To register and find out the current
8257 settings for extended allocation functions, the following
8258 functions are provided:
8260 CRYPTO_set_mem_ex_functions
8261 CRYPTO_set_locked_mem_ex_functions
8262 CRYPTO_get_mem_ex_functions
8263 CRYPTO_get_locked_mem_ex_functions
8265 These work the same way as CRYPTO_set_mem_functions and friends.
8266 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
8267 extended allocation function is enabled.
8268 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
8269 a conventional allocation function is enabled.
8270 [Richard Levitte, Bodo Moeller]
8272 *) Finish off removing the remaining LHASH function pointer casts.
8273 There should no longer be any prototype-casting required when using
8274 the LHASH abstraction, and any casts that remain are "bugs". See
8275 the callback types and macros at the head of lhash.h for details
8276 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
8279 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
8280 If /dev/[u]random devices are not available or do not return enough
8281 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
8283 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
8284 /etc/entropy will be queried once each in this sequence, querying stops
8285 when enough entropy was collected without querying more sockets.
8288 *) Change the Unix RAND_poll() variant to be able to poll several
8289 random devices, as specified by DEVRANDOM, until a sufficient amount
8290 of data has been collected. We spend at most 10 ms on each file
8291 (select timeout) and read in non-blocking mode. DEVRANDOM now
8292 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
8293 (previously it was just the string "/dev/urandom"), so on typical
8294 platforms the 10 ms delay will never occur.
8295 Also separate out the Unix variant to its own file, rand_unix.c.
8296 For VMS, there's a currently-empty rand_vms.c.
8299 *) Move OCSP client related routines to ocsp_cl.c. These
8300 provide utility functions which an application needing
8301 to issue a request to an OCSP responder and analyse the
8302 response will typically need: as opposed to those which an
8303 OCSP responder itself would need which will be added later.
8305 OCSP_request_sign() signs an OCSP request with an API similar
8306 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
8307 response. OCSP_response_get1_basic() extracts basic response
8308 from response. OCSP_resp_find_status(): finds and extracts status
8309 information from an OCSP_CERTID structure (which will be created
8310 when the request structure is built). These are built from lower
8311 level functions which work on OCSP_SINGLERESP structures but
8312 won't normally be used unless the application wishes to examine
8313 extensions in the OCSP response for example.
8315 Replace nonce routines with a pair of functions.
8316 OCSP_request_add1_nonce() adds a nonce value and optionally
8317 generates a random value. OCSP_check_nonce() checks the
8318 validity of the nonce in an OCSP response.
8321 *) Change function OCSP_request_add() to OCSP_request_add0_id().
8322 This doesn't copy the supplied OCSP_CERTID and avoids the
8323 need to free up the newly created id. Change return type
8324 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
8325 This can then be used to add extensions to the request.
8326 Deleted OCSP_request_new(), since most of its functionality
8327 is now in OCSP_REQUEST_new() (and the case insensitive name
8328 clash) apart from the ability to set the request name which
8329 will be added elsewhere.
8332 *) Update OCSP API. Remove obsolete extensions argument from
8333 various functions. Extensions are now handled using the new
8334 OCSP extension code. New simple OCSP HTTP function which
8335 can be used to send requests and parse the response.
8338 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
8339 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
8340 uses the special reorder version of SET OF to sort the attributes
8341 and reorder them to match the encoded order. This resolves a long
8342 standing problem: a verify on a PKCS7 structure just after signing
8343 it used to fail because the attribute order did not match the
8344 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
8345 it uses the received order. This is necessary to tolerate some broken
8346 software that does not order SET OF. This is handled by encoding
8347 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
8348 to produce the required SET OF.
8351 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
8352 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
8353 files to get correct declarations of the ASN.1 item variables.
8356 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
8357 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
8358 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
8359 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
8360 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
8361 ASN1_ITEM and no wrapper functions.
8364 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
8365 replace the old function pointer based I/O routines. Change most of
8366 the *_d2i_bio() and *_d2i_fp() functions to use these.
8369 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
8370 lines, recognize more "algorithms" that can be deselected, and make
8371 it complain about algorithm deselection that isn't recognised.
8374 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
8375 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
8376 to use new functions. Add NO_ASN1_OLD which can be set to remove
8377 some old style ASN1 functions: this can be used to determine if old
8378 code will still work when these eventually go away.
8381 *) New extension functions for OCSP structures, these follow the
8382 same conventions as certificates and CRLs.
8385 *) New function X509V3_add1_i2d(). This automatically encodes and
8386 adds an extension. Its behaviour can be customised with various
8387 flags to append, replace or delete. Various wrappers added for
8388 certificates and CRLs.
8391 *) Fix to avoid calling the underlying ASN1 print routine when
8392 an extension cannot be parsed. Correct a typo in the
8393 OCSP_SERVICELOC extension. Tidy up print OCSP format.
8396 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
8397 entries for variables.
8400 *) Add functionality to apps/openssl.c for detecting locking
8401 problems: As the program is single-threaded, all we have
8402 to do is register a locking callback using an array for
8403 storing which locks are currently held by the program.
8406 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
8407 SSL_get_ex_data_X509_STORE_idx(), which is used in
8408 ssl_verify_cert_chain() and thus can be called at any time
8409 during TLS/SSL handshakes so that thread-safety is essential.
8410 Unfortunately, the ex_data design is not at all suited
8411 for multi-threaded use, so it probably should be abolished.
8414 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
8415 [Broadcom, tweaked and integrated by Geoff Thorpe]
8417 *) Move common extension printing code to new function
8418 X509V3_print_extensions(). Reorganise OCSP print routines and
8419 implement some needed OCSP ASN1 functions. Add OCSP extensions.
8422 *) New function X509_signature_print() to remove duplication in some
8426 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
8427 set (this was treated exactly the same as SET OF previously). This
8428 is used to reorder the STACK representing the structure to match the
8429 encoding. This will be used to get round a problem where a PKCS7
8430 structure which was signed could not be verified because the STACK
8431 order did not reflect the encoded order.
8434 *) Reimplement the OCSP ASN1 module using the new code.
8437 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
8438 for its ASN1 operations. The old style function pointers still exist
8439 for now but they will eventually go away.
8442 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
8443 completely replaces the old ASN1 functionality with a table driven
8444 encoder and decoder which interprets an ASN1_ITEM structure describing
8445 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
8446 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
8447 has also been converted to the new form.
8450 *) Change BN_mod_exp_recp so that negative moduli are tolerated
8451 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
8452 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
8453 for negative moduli.
8456 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
8457 of not touching the result's sign bit.
8460 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
8464 *) Changed the LHASH code to use prototypes for callbacks, and created
8465 macros to declare and implement thin (optionally static) functions
8466 that provide type-safety and avoid function pointer casting for the
8467 type-specific callbacks.
8470 *) Added Kerberos Cipher Suites to be used with TLS, as written in
8472 [Veers Staats <staatsvr@asc.hpc.mil>,
8473 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
8475 *) Reformat the FAQ so the different questions and answers can be divided
8476 in sections depending on the subject.
8479 *) Have the zlib compression code load ZLIB.DLL dynamically under
8483 *) New function BN_mod_sqrt for computing square roots modulo a prime
8484 (using the probabilistic Tonelli-Shanks algorithm unless
8485 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
8486 be handled deterministically).
8487 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8489 *) Make BN_mod_inverse faster by explicitly handling small quotients
8490 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
8491 512 bits], about 30% for larger ones [1024 or 2048 bits].)
8494 *) New function BN_kronecker.
8497 *) Fix BN_gcd so that it works on negative inputs; the result is
8498 positive unless both parameters are zero.
8499 Previously something reasonably close to an infinite loop was
8500 possible because numbers could be growing instead of shrinking
8501 in the implementation of Euclid's algorithm.
8504 *) Fix BN_is_word() and BN_is_one() macros to take into account the
8505 sign of the number in question.
8507 Fix BN_is_word(a,w) to work correctly for w == 0.
8509 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
8510 because its test if the absolute value of 'a' equals 'w'.
8511 Note that BN_abs_is_word does *not* handle w == 0 reliably;
8512 it exists mostly for use in the implementations of BN_is_zero(),
8513 BN_is_one(), and BN_is_word().
8516 *) New function BN_swap.
8519 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
8520 the exponentiation functions are more likely to produce reasonable
8521 results on negative inputs.
8524 *) Change BN_mod_mul so that the result is always non-negative.
8525 Previously, it could be negative if one of the factors was negative;
8526 I don't think anyone really wanted that behaviour.
8529 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
8530 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
8531 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
8532 and add new functions:
8541 BN_mod_lshift1_quick
8545 These functions always generate non-negative results.
8547 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
8548 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
8550 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
8551 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
8552 be reduced modulo m.
8553 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8556 The following entry accidentally appeared in the CHANGES file
8557 distributed with OpenSSL 0.9.7. The modifications described in
8558 it do *not* apply to OpenSSL 0.9.7.
8560 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
8561 was actually never needed) and in BN_mul(). The removal in BN_mul()
8562 required a small change in bn_mul_part_recursive() and the addition
8563 of the functions bn_cmp_part_words(), bn_sub_part_words() and
8564 bn_add_part_words(), which do the same thing as bn_cmp_words(),
8565 bn_sub_words() and bn_add_words() except they take arrays with
8570 *) In 'openssl passwd', verify passwords read from the terminal
8571 unless the '-salt' option is used (which usually means that
8572 verification would just waste user's time since the resulting
8573 hash is going to be compared with some given password hash)
8574 or the new '-noverify' option is used.
8576 This is an incompatible change, but it does not affect
8577 non-interactive use of 'openssl passwd' (passwords on the command
8578 line, '-stdin' option, '-in ...' option) and thus should not
8582 *) Remove all references to RSAref, since there's no more need for it.
8585 *) Make DSO load along a path given through an environment variable
8586 (SHLIB_PATH) with shl_load().
8589 *) Constify the ENGINE code as a result of BIGNUM constification.
8590 Also constify the RSA code and most things related to it. In a
8591 few places, most notable in the depth of the ASN.1 code, ugly
8592 casts back to non-const were required (to be solved at a later
8596 *) Make it so the openssl application has all engines loaded by default.
8599 *) Constify the BIGNUM routines a little more.
8602 *) Add the following functions:
8604 ENGINE_load_cswift()
8606 ENGINE_load_atalla()
8608 ENGINE_load_builtin_engines()
8610 That way, an application can itself choose if external engines that
8611 are built-in in OpenSSL shall ever be used or not. The benefit is
8612 that applications won't have to be linked with libdl or other dso
8613 libraries unless it's really needed.
8615 Changed 'openssl engine' to load all engines on demand.
8616 Changed the engine header files to avoid the duplication of some
8617 declarations (they differed!).
8620 *) 'openssl engine' can now list capabilities.
8623 *) Better error reporting in 'openssl engine'.
8626 *) Never call load_dh_param(NULL) in s_server.
8629 *) Add engine application. It can currently list engines by name and
8630 identity, and test if they are actually available.
8633 *) Improve RPM specification file by forcing symbolic linking and making
8634 sure the installed documentation is also owned by root.root.
8635 [Damien Miller <djm@mindrot.org>]
8637 *) Give the OpenSSL applications more possibilities to make use of
8638 keys (public as well as private) handled by engines.
8641 *) Add OCSP code that comes from CertCo.
8644 *) Add VMS support for the Rijndael code.
8647 *) Added untested support for Nuron crypto accelerator.
8650 *) Add support for external cryptographic devices. This code was
8651 previously distributed separately as the "engine" branch.
8652 [Geoff Thorpe, Richard Levitte]
8654 *) Rework the filename-translation in the DSO code. It is now possible to
8655 have far greater control over how a "name" is turned into a filename
8656 depending on the operating environment and any oddities about the
8657 different shared library filenames on each system.
8660 *) Support threads on FreeBSD-elf in Configure.
8663 *) Fix for SHA1 assembly problem with MASM: it produces
8664 warnings about corrupt line number information when assembling
8665 with debugging information. This is caused by the overlapping
8667 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
8670 NCONF_get_number() has no error checking at all. As a replacement,
8671 NCONF_get_number_e() is defined (_e for "error checking") and is
8672 promoted strongly. The old NCONF_get_number is kept around for
8673 binary backward compatibility.
8674 Make it possible for methods to load from something other than a BIO,
8675 by providing a function pointer that is given a name instead of a BIO.
8676 For example, this could be used to load configuration data from an
8680 *) Fix for non blocking accept BIOs. Added new I/O special reason
8681 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
8682 with non blocking I/O was not possible because no retry code was
8683 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
8687 *) Added the beginnings of Rijndael support.
8690 *) Fix for bug in DirectoryString mask setting. Add support for
8691 X509_NAME_print_ex() in 'req' and X509_print_ex() function
8692 to allow certificate printing to more controllable, additional
8693 'certopt' option to 'x509' to allow new printing options to be
8697 *) Clean old EAY MD5 hack from e_os.h.
8700 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
8702 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
8703 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
8704 [Joe Orton, Steve Henson]
8706 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
8708 *) Fix additional bug revealed by the NISCC test suite:
8710 Stop bug triggering large recursion when presented with
8711 certain ASN.1 tags (CVE-2003-0851)
8714 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
8716 *) Fix various bugs revealed by running the NISCC test suite:
8718 Stop out of bounds reads in the ASN1 code when presented with
8719 invalid tags (CVE-2003-0543 and CVE-2003-0544).
8721 If verify callback ignores invalid public key errors don't try to check
8722 certificate signature with the NULL public key.
8726 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
8727 if the server requested one: as stated in TLS 1.0 and SSL 3.0
8731 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
8732 extra data after the compression methods not only for TLS 1.0
8733 but also for SSL 3.0 (as required by the specification).
8734 [Bodo Moeller; problem pointed out by Matthias Loepfe]
8736 *) Change X509_certificate_type() to mark the key as exported/exportable
8737 when it's 512 *bits* long, not 512 bytes.
8740 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
8742 *) Countermeasure against the Klima-Pokorny-Rosa extension of
8743 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
8744 a protocol version number mismatch like a decryption error
8745 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
8748 *) Turn on RSA blinding by default in the default implementation
8749 to avoid a timing attack. Applications that don't want it can call
8750 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
8751 They would be ill-advised to do so in most cases.
8752 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
8754 *) Change RSA blinding code so that it works when the PRNG is not
8755 seeded (in this case, the secret RSA exponent is abused as
8756 an unpredictable seed -- if it is not unpredictable, there
8757 is no point in blinding anyway). Make RSA blinding thread-safe
8758 by remembering the creator's thread ID in rsa->blinding and
8759 having all other threads use local one-time blinding factors
8760 (this requires more computation than sharing rsa->blinding, but
8761 avoids excessive locking; and if an RSA object is not shared
8762 between threads, blinding will still be very fast).
8765 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
8767 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
8768 via timing by performing a MAC computation even if incorrect
8769 block cipher padding has been found. This is a countermeasure
8770 against active attacks where the attacker has to distinguish
8771 between bad padding and a MAC verification error. (CVE-2003-0078)
8773 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
8774 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
8775 Martin Vuagnoux (EPFL, Ilion)]
8777 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
8779 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
8780 memory from it's contents. This is done with a counter that will
8781 place alternating values in each byte. This can be used to solve
8782 two issues: 1) the removal of calls to memset() by highly optimizing
8783 compilers, and 2) cleansing with other values than 0, since those can
8784 be read through on certain media, for example a swap space on disk.
8787 *) Bugfix: client side session caching did not work with external caching,
8788 because the session->cipher setting was not restored when reloading
8789 from the external cache. This problem was masked, when
8790 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
8791 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
8794 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
8795 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
8796 [Zeev Lieber <zeev-l@yahoo.com>]
8798 *) Undo an undocumented change introduced in 0.9.6e which caused
8799 repeated calls to OpenSSL_add_all_ciphers() and
8800 OpenSSL_add_all_digests() to be ignored, even after calling
8804 *) Change the default configuration reader to deal with last line not
8805 being properly terminated.
8808 *) Change X509_NAME_cmp() so it applies the special rules on handling
8809 DN values that are of type PrintableString, as well as RDNs of type
8810 emailAddress where the value has the type ia5String.
8811 [stefank@valicert.com via Richard Levitte]
8813 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
8814 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
8815 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
8816 the bitwise-OR of the two for use by the majority of applications
8817 wanting this behaviour, and update the docs. The documented
8818 behaviour and actual behaviour were inconsistent and had been
8819 changing anyway, so this is more a bug-fix than a behavioural
8821 [Geoff Thorpe, diagnosed by Nadav Har'El]
8823 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
8824 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
8827 *) Fix initialization code race conditions in
8828 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
8829 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
8830 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
8831 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
8832 ssl2_get_cipher_by_char(),
8833 ssl3_get_cipher_by_char().
8834 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
8836 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
8837 the cached sessions are flushed, as the remove_cb() might use ex_data
8838 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
8839 (see [openssl.org #212]).
8840 [Geoff Thorpe, Lutz Jaenicke]
8842 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
8843 length, instead of the encoding length to d2i_ASN1_OBJECT.
8846 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
8848 *) [In 0.9.6g-engine release:]
8849 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
8850 [Lynn Gazis <lgazis@rainbow.com>]
8852 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
8854 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
8855 and get fix the header length calculation.
8856 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
8857 Alon Kantor <alonk@checkpoint.com> (and others),
8860 *) Use proper error handling instead of 'assertions' in buffer
8861 overflow checks added in 0.9.6e. This prevents DoS (the
8862 assertions could call abort()).
8863 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
8865 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
8867 *) Add various sanity checks to asn1_get_length() to reject
8868 the ASN1 length bytes if they exceed sizeof(long), will appear
8869 negative or the content length exceeds the length of the
8871 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
8873 *) Fix cipher selection routines: ciphers without encryption had no flags
8874 for the cipher strength set and where therefore not handled correctly
8875 by the selection routines (PR #130).
8878 *) Fix EVP_dsa_sha macro.
8882 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
8883 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
8884 that was added in OpenSSL 0.9.6d.
8886 As the countermeasure turned out to be incompatible with some
8887 broken SSL implementations, the new option is part of SSL_OP_ALL.
8888 SSL_OP_ALL is usually employed when compatibility with weird SSL
8889 implementations is desired (e.g. '-bugs' option to 's_client' and
8890 's_server'), so the new option is automatically set in many
8894 *) Changes in security patch:
8896 Changes marked "(CHATS)" were sponsored by the Defense Advanced
8897 Research Projects Agency (DARPA) and Air Force Research Laboratory,
8898 Air Force Materiel Command, USAF, under agreement number
8901 *) Add various sanity checks to asn1_get_length() to reject
8902 the ASN1 length bytes if they exceed sizeof(long), will appear
8903 negative or the content length exceeds the length of the
8904 supplied buffer. (CVE-2002-0659)
8905 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
8907 *) Assertions for various potential buffer overflows, not known to
8909 [Ben Laurie (CHATS)]
8911 *) Various temporary buffers to hold ASCII versions of integers were
8912 too small for 64 bit platforms. (CVE-2002-0655)
8913 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
8915 *) Remote buffer overflow in SSL3 protocol - an attacker could
8916 supply an oversized session ID to a client. (CVE-2002-0656)
8917 [Ben Laurie (CHATS)]
8919 *) Remote buffer overflow in SSL2 protocol - an attacker could
8920 supply an oversized client master key. (CVE-2002-0656)
8921 [Ben Laurie (CHATS)]
8923 Changes between 0.9.6c and 0.9.6d [9 May 2002]
8925 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
8926 encoded as NULL) with id-dsa-with-sha1.
8927 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
8929 *) Check various X509_...() return values in apps/req.c.
8930 [Nils Larsch <nla@trustcenter.de>]
8932 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
8933 an end-of-file condition would erroneously be flagged, when the CRLF
8934 was just at the end of a processed block. The bug was discovered when
8935 processing data through a buffering memory BIO handing the data to a
8936 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
8937 <ptsekov@syntrex.com> and Nedelcho Stanev.
8940 *) Implement a countermeasure against a vulnerability recently found
8941 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
8942 before application data chunks to avoid the use of known IVs
8943 with data potentially chosen by the attacker.
8946 *) Fix length checks in ssl3_get_client_hello().
8949 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
8950 to prevent ssl3_read_internal() from incorrectly assuming that
8951 ssl3_read_bytes() found application data while handshake
8952 processing was enabled when in fact s->s3->in_read_app_data was
8953 merely automatically cleared during the initial handshake.
8954 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
8956 *) Fix object definitions for Private and Enterprise: they were not
8957 recognized in their shortname (=lowercase) representation. Extend
8958 obj_dat.pl to issue an error when using undefined keywords instead
8959 of silently ignoring the problem (Svenning Sorensen
8960 <sss@sss.dnsalias.net>).
8963 *) Fix DH_generate_parameters() so that it works for 'non-standard'
8964 generators, i.e. generators other than 2 and 5. (Previously, the
8965 code did not properly initialise the 'add' and 'rem' values to
8966 BN_generate_prime().)
8968 In the new general case, we do not insist that 'generator' is
8969 actually a primitive root: This requirement is rather pointless;
8970 a generator of the order-q subgroup is just as good, if not
8974 *) Map new X509 verification errors to alerts. Discovered and submitted by
8975 Tom Wu <tom@arcot.com>.
8978 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
8979 returning non-zero before the data has been completely received
8980 when using non-blocking I/O.
8981 [Bodo Moeller; problem pointed out by John Hughes]
8983 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
8984 [Ben Laurie, Lutz Jaenicke]
8986 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
8987 Yoram Zahavi <YoramZ@gilian.com>).
8990 *) Add information about CygWin 1.3 and on, and preserve proper
8991 configuration for the versions before that.
8992 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
8994 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
8995 check whether we deal with a copy of a session and do not delete from
8996 the cache in this case. Problem reported by "Izhar Shoshani Levi"
8997 <izhar@checkpoint.com>.
9000 *) Do not store session data into the internal session cache, if it
9001 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
9002 flag is set). Proposed by Aslam <aslam@funk.com>.
9005 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
9009 *) [In 0.9.6d-engine release:]
9010 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
9011 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
9013 *) Add the configuration target linux-s390x.
9014 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
9016 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
9017 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
9018 variable as an indication that a ClientHello message has been
9019 received. As the flag value will be lost between multiple
9020 invocations of ssl3_accept when using non-blocking I/O, the
9021 function may not be aware that a handshake has actually taken
9022 place, thus preventing a new session from being added to the
9025 To avoid this problem, we now set s->new_session to 2 instead of
9026 using a local variable.
9027 [Lutz Jaenicke, Bodo Moeller]
9029 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
9030 if the SSL_R_LENGTH_MISMATCH error is detected.
9031 [Geoff Thorpe, Bodo Moeller]
9033 *) New 'shared_ldflag' column in Configure platform table.
9036 *) Fix EVP_CIPHER_mode macro.
9037 ["Dan S. Camper" <dan@bti.net>]
9039 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
9040 type, we must throw them away by setting rr->length to 0.
9041 [D P Chang <dpc@qualys.com>]
9043 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
9045 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
9046 <Dominikus.Scherkl@biodata.com>. (The previous implementation
9047 worked incorrectly for those cases where range = 10..._2 and
9048 3*range is two bits longer than range.)
9051 *) Only add signing time to PKCS7 structures if it is not already
9055 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
9056 OBJ_ld_ce should be OBJ_id_ce.
9057 Also some ip-pda OIDs in crypto/objects/objects.txt were
9058 incorrect (cf. RFC 3039).
9059 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
9061 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
9062 returns early because it has nothing to do.
9063 [Andy Schneider <andy.schneider@bjss.co.uk>]
9065 *) [In 0.9.6c-engine release:]
9066 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
9067 [Andy Schneider <andy.schneider@bjss.co.uk>]
9069 *) [In 0.9.6c-engine release:]
9070 Add support for Cryptographic Appliance's keyserver technology.
9071 (Use engine 'keyclient')
9072 [Cryptographic Appliances and Geoff Thorpe]
9074 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
9075 is called via tools/c89.sh because arguments have to be
9076 rearranged (all '-L' options must appear before the first object
9078 [Richard Shapiro <rshapiro@abinitio.com>]
9080 *) [In 0.9.6c-engine release:]
9081 Add support for Broadcom crypto accelerator cards, backported
9083 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
9085 *) [In 0.9.6c-engine release:]
9086 Add support for SureWare crypto accelerator cards from
9087 Baltimore Technologies. (Use engine 'sureware')
9088 [Baltimore Technologies and Mark Cox]
9090 *) [In 0.9.6c-engine release:]
9091 Add support for crypto accelerator cards from Accelerated
9092 Encryption Processing, www.aep.ie. (Use engine 'aep')
9093 [AEP Inc. and Mark Cox]
9095 *) Add a configuration entry for gcc on UnixWare.
9096 [Gary Benson <gbenson@redhat.com>]
9098 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
9099 messages are stored in a single piece (fixed-length part and
9100 variable-length part combined) and fix various bugs found on the way.
9103 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
9104 instead. BIO_gethostbyname() does not know what timeouts are
9105 appropriate, so entries would stay in cache even when they have
9107 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
9109 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
9110 faced with a pathologically small ClientHello fragment that does
9111 not contain client_version: Instead of aborting with an error,
9112 simply choose the highest available protocol version (i.e.,
9113 TLS 1.0 unless it is disabled). In practice, ClientHello
9114 messages are never sent like this, but this change gives us
9115 strictly correct behaviour at least for TLS.
9118 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
9119 never resets s->method to s->ctx->method when called from within
9120 one of the SSL handshake functions.
9121 [Bodo Moeller; problem pointed out by Niko Baric]
9123 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
9124 (sent using the client's version number) if client_version is
9125 smaller than the protocol version in use. Also change
9126 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
9127 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
9128 the client will at least see that alert.
9131 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
9135 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
9136 client receives HelloRequest while in a handshake.
9137 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
9139 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
9140 should end in 'break', not 'goto end' which circumvents various
9141 cleanups done in state SSL_ST_OK. But session related stuff
9142 must be disabled for SSL_ST_OK in the case that we just sent a
9145 Also avoid some overhead by not calling ssl_init_wbio_buffer()
9146 before just sending a HelloRequest.
9147 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
9149 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
9150 reveal whether illegal block cipher padding was found or a MAC
9151 verification error occurred. (Neither SSLerr() codes nor alerts
9152 are directly visible to potential attackers, but the information
9153 may leak via logfiles.)
9155 Similar changes are not required for the SSL 2.0 implementation
9156 because the number of padding bytes is sent in clear for SSL 2.0,
9157 and the extra bytes are just ignored. However ssl/s2_pkt.c
9158 failed to verify that the purported number of padding bytes is in
9162 *) Add OpenUNIX-8 support including shared libraries
9163 (Boyd Lynn Gerber <gerberb@zenez.com>).
9166 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
9167 'wristwatch attack' using huge encoding parameters (cf.
9168 James H. Manger's CRYPTO 2001 paper). Note that the
9169 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
9170 encoding parameters and hence was not vulnerable.
9173 *) BN_sqr() bug fix.
9174 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
9176 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
9177 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
9178 followed by modular reduction.
9179 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
9181 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
9182 equivalent based on BN_pseudo_rand() instead of BN_rand().
9185 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
9186 This function was broken, as the check for a new client hello message
9187 to handle SGC did not allow these large messages.
9188 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
9191 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
9194 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
9195 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
9198 *) Rework the configuration and shared library support for Tru64 Unix.
9199 The configuration part makes use of modern compiler features and
9200 still retains old compiler behavior for those that run older versions
9201 of the OS. The shared library support part includes a variant that
9202 uses the RPATH feature, and is available through the special
9203 configuration target "alpha-cc-rpath", which will never be selected
9205 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
9207 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
9208 with the same message size as in ssl3_get_certificate_request().
9209 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
9210 messages might inadvertently be reject as too long.
9211 [Petr Lampa <lampa@fee.vutbr.cz>]
9213 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
9216 *) Modified SSL library such that the verify_callback that has been set
9217 specificly for an SSL object with SSL_set_verify() is actually being
9218 used. Before the change, a verify_callback set with this function was
9219 ignored and the verify_callback() set in the SSL_CTX at the time of
9220 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
9221 to allow the necessary settings.
9224 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
9225 explicitly to NULL, as at least on Solaris 8 this seems not always to be
9226 done automatically (in contradiction to the requirements of the C
9227 standard). This made problems when used from OpenSSH.
9230 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
9231 dh->length and always used
9233 BN_rand_range(priv_key, dh->p).
9235 BN_rand_range() is not necessary for Diffie-Hellman, and this
9236 specific range makes Diffie-Hellman unnecessarily inefficient if
9237 dh->length (recommended exponent length) is much smaller than the
9238 length of dh->p. We could use BN_rand_range() if the order of
9239 the subgroup was stored in the DH structure, but we only have
9244 BN_rand(priv_key, l, ...)
9246 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
9252 RSA_eay_public_encrypt
9253 RSA_eay_private_decrypt
9254 RSA_eay_private_encrypt (signing)
9255 RSA_eay_public_decrypt (signature verification)
9257 (default implementations for RSA_public_encrypt,
9258 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
9259 always reject numbers >= n.
9262 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
9263 to synchronize access to 'locking_thread'. This is necessary on
9264 systems where access to 'locking_thread' (an 'unsigned long'
9265 variable) is not atomic.
9268 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
9269 *before* setting the 'crypto_lock_rand' flag. The previous code had
9270 a race condition if 0 is a valid thread ID.
9271 [Travis Vitek <vitek@roguewave.com>]
9273 *) Add support for shared libraries under Irix.
9274 [Albert Chin-A-Young <china@thewrittenword.com>]
9276 *) Add configuration option to build on Linux on both big-endian and
9278 [Ralf Baechle <ralf@uni-koblenz.de>]
9280 *) Add the possibility to create shared libraries on HP-UX.
9283 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
9285 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
9286 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
9287 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
9288 PRNG state recovery was possible based on the output of
9289 one PRNG request appropriately sized to gain knowledge on
9290 'md' followed by enough consecutive 1-byte PRNG requests
9291 to traverse all of 'state'.
9293 1. When updating 'md_local' (the current thread's copy of 'md')
9294 during PRNG output generation, hash all of the previous
9295 'md_local' value, not just the half used for PRNG output.
9297 2. Make the number of bytes from 'state' included into the hash
9298 independent from the number of PRNG bytes requested.
9300 The first measure alone would be sufficient to avoid
9301 Markku-Juhani's attack. (Actually it had never occurred
9302 to me that the half of 'md_local' used for chaining was the
9303 half from which PRNG output bytes were taken -- I had always
9304 assumed that the secret half would be used.) The second
9305 measure makes sure that additional data from 'state' is never
9306 mixed into 'md_local' in small portions; this heuristically
9307 further strengthens the PRNG.
9310 *) Fix crypto/bn/asm/mips3.s.
9313 *) When only the key is given to "enc", the IV is undefined. Print out
9314 an error message in this case.
9317 *) Handle special case when X509_NAME is empty in X509 printing routines.
9320 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
9321 positive and less than q.
9324 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
9325 used: it isn't thread safe and the add_lock_callback should handle
9327 [Paul Rose <Paul.Rose@bridge.com>]
9329 *) Verify that incoming data obeys the block size in
9330 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
9334 [Ulf Möller, Bodo Möller]
9336 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
9337 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
9338 when fixing the server behaviour for backwards-compatible 'client
9339 hello' messages. (Note that the attack is impractical against
9340 SSL 3.0 and TLS 1.0 anyway because length and version checking
9341 means that the probability of guessing a valid ciphertext is
9342 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
9345 Before 0.9.5, the countermeasure (hide the error by generating a
9346 random 'decryption result') did not work properly because
9347 ERR_clear_error() was missing, meaning that SSL_get_error() would
9348 detect the supposedly ignored error.
9350 Both problems are now fixed.
9353 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
9354 (previously it was 1024).
9357 *) Fix for compatibility mode trust settings: ignore trust settings
9358 unless some valid trust or reject settings are present.
9361 *) Fix for blowfish EVP: its a variable length cipher.
9364 *) Fix various bugs related to DSA S/MIME verification. Handle missing
9365 parameters in DSA public key structures and return an error in the
9366 DSA routines if parameters are absent.
9369 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
9370 in the current directory if neither $RANDFILE nor $HOME was set.
9371 RAND_file_name() in 0.9.6a returned NULL in this case. This has
9372 caused some confusion to Windows users who haven't defined $HOME.
9373 Thus RAND_file_name() is changed again: e_os.h can define a
9374 DEFAULT_HOME, which will be used if $HOME is not set.
9375 For Windows, we use "C:"; on other platforms, we still require
9376 environment variables.
9378 *) Move 'if (!initialized) RAND_poll()' into regions protected by
9379 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
9380 having multiple threads call RAND_poll() concurrently.
9383 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
9384 combination of a flag and a thread ID variable.
9385 Otherwise while one thread is in ssleay_rand_bytes (which sets the
9386 flag), *other* threads can enter ssleay_add_bytes without obeying
9387 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
9388 that they do not hold after the first thread unsets add_do_not_lock).
9391 *) Change bctest again: '-x' expressions are not available in all
9395 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
9397 *) Fix a couple of memory leaks in PKCS7_dataDecode()
9398 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
9400 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
9401 the default extension for executables, if any. Also, make the perl
9402 scripts that use symlink() to test if it really exists and use "cp"
9403 if it doesn't. All this made OpenSSL compilable and installable in
9407 *) Fix for asn1_GetSequence() for indefinite length constructed data.
9408 If SEQUENCE is length is indefinite just set c->slen to the total
9409 amount of data available.
9410 [Steve Henson, reported by shige@FreeBSD.org]
9411 [This change does not apply to 0.9.7.]
9413 *) Change bctest to avoid here-documents inside command substitution
9414 (workaround for FreeBSD /bin/sh bug).
9415 For compatibility with Ultrix, avoid shell functions (introduced
9416 in the bctest version that searches along $PATH).
9419 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
9420 with des_encrypt() defined on some operating systems, like Solaris
9424 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
9425 On the Importance of Eliminating Errors in Cryptographic
9426 Computations, J. Cryptology 14 (2001) 2, 101-119,
9427 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
9430 *) MIPS assembler BIGNUM division bug fix.
9433 *) Disabled incorrect Alpha assembler code.
9436 *) Fix PKCS#7 decode routines so they correctly update the length
9437 after reading an EOC for the EXPLICIT tag.
9439 [This change does not apply to 0.9.7.]
9441 *) Fix bug in PKCS#12 key generation routines. This was triggered
9442 if a 3DES key was generated with a 0 initial byte. Include
9443 PKCS12_BROKEN_KEYGEN compilation option to retain the old
9444 (but broken) behaviour.
9447 *) Enhance bctest to search for a working bc along $PATH and print
9449 [Tim Rice <tim@multitalents.net> via Richard Levitte]
9451 *) Fix memory leaks in err.c: free err_data string if necessary;
9452 don't write to the wrong index in ERR_set_error_data.
9455 *) Implement ssl23_peek (analogous to ssl23_read), which previously
9459 *) Replace rdtsc with _emit statements for VC++ version 5.
9460 [Jeremy Cooper <jeremy@baymoo.org>]
9462 *) Make it possible to reuse SSLv2 sessions.
9465 *) In copy_email() check for >= 0 as a return value for
9466 X509_NAME_get_index_by_NID() since 0 is a valid index.
9467 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
9469 *) Avoid coredump with unsupported or invalid public keys by checking if
9470 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
9471 PKCS7_verify() fails with non detached data.
9474 *) Don't use getenv in library functions when run as setuid/setgid.
9475 New function OPENSSL_issetugid().
9478 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
9479 due to incorrect handling of multi-threading:
9481 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
9483 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
9485 3. Count how many times MemCheck_off() has been called so that
9486 nested use can be treated correctly. This also avoids
9487 inband-signalling in the previous code (which relied on the
9488 assumption that thread ID 0 is impossible).
9491 *) Add "-rand" option also to s_client and s_server.
9494 *) Fix CPU detection on Irix 6.x.
9495 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
9496 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9498 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
9501 [This change does not apply to 0.9.7.]
9503 *) Use the cached encoding of an X509_NAME structure rather than
9504 copying it. This is apparently the reason for the libsafe "errors"
9505 but the code is actually correct.
9508 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
9509 Bleichenbacher's DSA attack.
9510 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
9511 to be set and top=0 forces the highest bit to be set; top=-1 is new
9512 and leaves the highest bit random.
9513 [Ulf Moeller, Bodo Moeller]
9515 *) In the NCONF_...-based implementations for CONF_... queries
9516 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
9517 a temporary CONF structure with the data component set to NULL
9518 (which gives segmentation faults in lh_retrieve).
9519 Instead, use NULL for the CONF pointer in CONF_get_string and
9520 CONF_get_number (which may use environment variables) and directly
9521 return NULL from CONF_get_section.
9524 *) Fix potential buffer overrun for EBCDIC.
9527 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
9528 keyUsage if basicConstraints absent for a CA.
9531 *) Make SMIME_write_PKCS7() write mail header values with a format that
9532 is more generally accepted (no spaces before the semicolon), since
9533 some programs can't parse those values properly otherwise. Also make
9534 sure BIO's that break lines after each write do not create invalid
9538 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
9539 macros previously used would not encode an empty SEQUENCE OF
9540 and break the signature.
9542 [This change does not apply to 0.9.7.]
9544 *) Zero the premaster secret after deriving the master secret in
9548 *) Add some EVP_add_digest_alias registrations (as found in
9549 OpenSSL_add_all_digests()) to SSL_library_init()
9550 aka OpenSSL_add_ssl_algorithms(). This provides improved
9551 compatibility with peers using X.509 certificates
9552 with unconventional AlgorithmIdentifier OIDs.
9555 *) Fix for Irix with NO_ASM.
9556 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9558 *) ./config script fixes.
9559 [Ulf Moeller, Richard Levitte]
9561 *) Fix 'openssl passwd -1'.
9564 *) Change PKCS12_key_gen_asc() so it can cope with non null
9565 terminated strings whose length is passed in the passlen
9566 parameter, for example from PEM callbacks. This was done
9567 by adding an extra length parameter to asc2uni().
9568 [Steve Henson, reported by <oddissey@samsung.co.kr>]
9570 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
9571 call failed, free the DSA structure.
9574 *) Fix to uni2asc() to cope with zero length Unicode strings.
9575 These are present in some PKCS#12 files.
9578 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
9579 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
9580 when writing a 32767 byte record.
9581 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
9583 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
9584 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
9586 (RSA objects have a reference count access to which is protected
9587 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
9588 so they are meant to be shared between threads.)
9589 [Bodo Moeller, Geoff Thorpe; original patch submitted by
9590 "Reddie, Steven" <Steven.Reddie@ca.com>]
9592 *) Fix a deadlock in CRYPTO_mem_leaks().
9595 *) Use better test patterns in bntest.
9598 *) rand_win.c fix for Borland C.
9601 *) BN_rshift bugfix for n == 0.
9604 *) Add a 'bctest' script that checks for some known 'bc' bugs
9605 so that 'make test' does not abort just because 'bc' is broken.
9608 *) Store verify_result within SSL_SESSION also for client side to
9609 avoid potential security hole. (Re-used sessions on the client side
9610 always resulted in verify_result==X509_V_OK, not using the original
9611 result of the server certificate verification.)
9614 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
9615 SSL3_RT_APPLICATION_DATA, return 0.
9616 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
9620 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
9621 releases, have been re-implemented by renaming the previous
9622 implementations of ssl2_read and ssl3_read to ssl2_read_internal
9623 and ssl3_read_internal, respectively, and adding 'peek' parameters
9624 to them. The new ssl[23]_{read,peek} functions are calls to
9625 ssl[23]_read_internal with the 'peek' flag set appropriately.
9626 A 'peek' parameter has also been added to ssl3_read_bytes, which
9627 does the actual work for ssl3_read_internal.
9630 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
9631 the method-specific "init()" handler. Also clean up ex_data after
9632 calling the method-specific "finish()" handler. Previously, this was
9633 happening the other way round.
9636 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
9637 The previous value, 12, was not always sufficient for BN_mod_exp().
9640 *) Make sure that shared libraries get the internal name engine with
9641 the full version number and not just 0. This should mark the
9642 shared libraries as not backward compatible. Of course, this should
9643 be changed again when we can guarantee backward binary compatibility.
9646 *) Fix typo in get_cert_by_subject() in by_dir.c
9647 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
9649 *) Rework the system to generate shared libraries:
9651 - Make note of the expected extension for the shared libraries and
9652 if there is a need for symbolic links from for example libcrypto.so.0
9653 to libcrypto.so.0.9.7. There is extended info in Configure for
9656 - Make as few rebuilds of the shared libraries as possible.
9658 - Still avoid linking the OpenSSL programs with the shared libraries.
9660 - When installing, install the shared libraries separately from the
9664 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
9666 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
9667 and not in SSL_clear because the latter is also used by the
9668 accept/connect functions; previously, the settings made by
9669 SSL_set_read_ahead would be lost during the handshake.
9670 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
9672 *) Correct util/mkdef.pl to be selective about disabled algorithms.
9673 Previously, it would create entries for disabled algorithms no
9677 *) Added several new manual pages for SSL_* function.
9680 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
9682 *) In ssl23_get_client_hello, generate an error message when faced
9683 with an initial SSL 3.0/TLS record that is too small to contain the
9684 first two bytes of the ClientHello message, i.e. client_version.
9685 (Note that this is a pathologic case that probably has never happened
9686 in real life.) The previous approach was to use the version number
9687 from the record header as a substitute; but our protocol choice
9688 should not depend on that one because it is not authenticated
9689 by the Finished messages.
9692 *) More robust randomness gathering functions for Windows.
9693 [Jeffrey Altman <jaltman@columbia.edu>]
9695 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
9696 not set then we don't setup the error code for issuer check errors
9697 to avoid possibly overwriting other errors which the callback does
9698 handle. If an application does set the flag then we assume it knows
9699 what it is doing and can handle the new informational codes
9703 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
9704 a general "ANY" type, as such it should be able to decode anything
9705 including tagged types. However it didn't check the class so it would
9706 wrongly interpret tagged types in the same way as their universal
9707 counterpart and unknown types were just rejected. Changed so that the
9708 tagged and unknown types are handled in the same way as a SEQUENCE:
9709 that is the encoding is stored intact. There is also a new type
9710 "V_ASN1_OTHER" which is used when the class is not universal, in this
9711 case we have no idea what the actual type is so we just lump them all
9715 *) On VMS, stdout may very well lead to a file that is written to
9716 in a record-oriented fashion. That means that every write() will
9717 write a separate record, which will be read separately by the
9718 programs trying to read from it. This can be very confusing.
9720 The solution is to put a BIO filter in the way that will buffer
9721 text until a linefeed is reached, and then write everything a
9722 line at a time, so every record written will be an actual line,
9723 not chunks of lines and not (usually doesn't happen, but I've
9724 seen it once) several lines in one record. BIO_f_linebuffer() is
9727 Currently, it's a VMS-only method, because that's where it has
9728 been tested well enough.
9731 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
9732 it can return incorrect results.
9733 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
9734 but it was in 0.9.6-beta[12].)
9737 *) Disable the check for content being present when verifying detached
9738 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
9739 include zero length content when signing messages.
9742 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
9743 BIO_ctrl (for BIO pairs).
9746 *) Add DSO method for VMS.
9749 *) Bug fix: Montgomery multiplication could produce results with the
9753 *) Add RPM specification openssl.spec and modify it to build three
9754 packages. The default package contains applications, application
9755 documentation and run-time libraries. The devel package contains
9756 include files, static libraries and function documentation. The
9757 doc package contains the contents of the doc directory. The original
9758 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
9761 *) Add a large number of documentation files for many SSL routines.
9762 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
9764 *) Add a configuration entry for Sony News 4.
9765 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
9767 *) Don't set the two most significant bits to one when generating a
9768 random number < q in the DSA library.
9771 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
9772 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
9773 the underlying transport is blocking) if a handshake took place.
9774 (The default behaviour is needed by applications such as s_client
9775 and s_server that use select() to determine when to use SSL_read;
9776 but for applications that know in advance when to expect data, it
9777 just makes things more complicated.)
9780 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
9784 *) Add a few more EBCDIC conditionals that make `req' and `x509'
9785 work better on such systems.
9786 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9788 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
9789 Update PKCS12_parse() so it copies the friendlyName and the
9790 keyid to the certificates aux info.
9793 *) Fix bug in PKCS7_verify() which caused an infinite loop
9794 if there was more than one signature.
9795 [Sven Uszpelkat <su@celocom.de>]
9797 *) Major change in util/mkdef.pl to include extra information
9798 about each symbol, as well as presenting variables as well
9799 as functions. This change means that there's n more need
9800 to rebuild the .num files when some algorithms are excluded.
9803 *) Allow the verify time to be set by an application,
9804 rather than always using the current time.
9807 *) Phase 2 verify code reorganisation. The certificate
9808 verify code now looks up an issuer certificate by a
9809 number of criteria: subject name, authority key id
9810 and key usage. It also verifies self signed certificates
9811 by the same criteria. The main comparison function is
9812 X509_check_issued() which performs these checks.
9814 Lot of changes were necessary in order to support this
9815 without completely rewriting the lookup code.
9817 Authority and subject key identifier are now cached.
9819 The LHASH 'certs' is X509_STORE has now been replaced
9820 by a STACK_OF(X509_OBJECT). This is mainly because an
9821 LHASH can't store or retrieve multiple objects with
9822 the same hash value.
9824 As a result various functions (which were all internal
9825 use only) have changed to handle the new X509_STORE
9826 structure. This will break anything that messed round
9827 with X509_STORE internally.
9829 The functions X509_STORE_add_cert() now checks for an
9830 exact match, rather than just subject name.
9832 The X509_STORE API doesn't directly support the retrieval
9833 of multiple certificates matching a given criteria, however
9834 this can be worked round by performing a lookup first
9835 (which will fill the cache with candidate certificates)
9836 and then examining the cache for matches. This is probably
9837 the best we can do without throwing out X509_LOOKUP
9838 entirely (maybe later...).
9840 The X509_VERIFY_CTX structure has been enhanced considerably.
9842 All certificate lookup operations now go via a get_issuer()
9843 callback. Although this currently uses an X509_STORE it
9844 can be replaced by custom lookups. This is a simple way
9845 to bypass the X509_STORE hackery necessary to make this
9846 work and makes it possible to use more efficient techniques
9847 in future. A very simple version which uses a simple
9848 STACK for its trusted certificate store is also provided
9849 using X509_STORE_CTX_trusted_stack().
9851 The verify_cb() and verify() callbacks now have equivalents
9852 in the X509_STORE_CTX structure.
9854 X509_STORE_CTX also has a 'flags' field which can be used
9855 to customise the verify behaviour.
9858 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
9859 excludes S/MIME capabilities.
9862 *) When a certificate request is read in keep a copy of the
9863 original encoding of the signed data and use it when outputting
9864 again. Signatures then use the original encoding rather than
9865 a decoded, encoded version which may cause problems if the
9866 request is improperly encoded.
9869 *) For consistency with other BIO_puts implementations, call
9870 buffer_write(b, ...) directly in buffer_puts instead of calling
9873 In BIO_puts, increment b->num_write as in BIO_write.
9874 [Peter.Sylvester@EdelWeb.fr]
9876 *) Fix BN_mul_word for the case where the word is 0. (We have to use
9877 BN_zero, we may not return a BIGNUM with an array consisting of
9881 *) Avoid calling abort() from within the library when problems are
9882 detected, except if preprocessor symbols have been defined
9883 (such as REF_CHECK, BN_DEBUG etc.).
9886 *) New openssl application 'rsautl'. This utility can be
9887 used for low level RSA operations. DER public key
9888 BIO/fp routines also added.
9891 *) New Configure entry and patches for compiling on QNX 4.
9892 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
9894 *) A demo state-machine implementation was sponsored by
9895 Nuron (http://www.nuron.com/) and is now available in
9896 demos/state_machine.
9899 *) New options added to the 'dgst' utility for signature
9900 generation and verification.
9903 *) Unrecognized PKCS#7 content types are now handled via a
9904 catch all ASN1_TYPE structure. This allows unsupported
9905 types to be stored as a "blob" and an application can
9906 encode and decode it manually.
9909 *) Fix various signed/unsigned issues to make a_strex.c
9911 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
9913 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
9914 length if passed a buffer. ASN1_INTEGER_to_BN failed
9915 if passed a NULL BN and its argument was negative.
9916 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
9918 *) Modification to PKCS#7 encoding routines to output definite
9919 length encoding. Since currently the whole structures are in
9920 memory there's not real point in using indefinite length
9921 constructed encoding. However if OpenSSL is compiled with
9922 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
9925 *) Added BIO_vprintf() and BIO_vsnprintf().
9928 *) Added more prefixes to parse for in the strings written
9929 through a logging bio, to cover all the levels that are available
9930 through syslog. The prefixes are now:
9932 PANIC, EMERG, EMR => LOG_EMERG
9933 ALERT, ALR => LOG_ALERT
9934 CRIT, CRI => LOG_CRIT
9935 ERROR, ERR => LOG_ERR
9936 WARNING, WARN, WAR => LOG_WARNING
9937 NOTICE, NOTE, NOT => LOG_NOTICE
9938 INFO, INF => LOG_INFO
9939 DEBUG, DBG => LOG_DEBUG
9941 and as before, if none of those prefixes are present at the
9942 beginning of the string, LOG_ERR is chosen.
9944 On Win32, the LOG_* levels are mapped according to this:
9946 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
9947 LOG_WARNING => EVENTLOG_WARNING_TYPE
9948 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
9952 *) Made it possible to reconfigure with just the configuration
9953 argument "reconf" or "reconfigure". The command line arguments
9954 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
9955 and are retrieved from there when reconfiguring.
9959 [Assar Westerlund <assar@sics.se>, Richard Levitte]
9961 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
9964 *) The obj_dat.pl script was messing up the sorting of object
9965 names. The reason was that it compared the quoted version
9966 of strings as a result "OCSP" > "OCSP Signing" because
9967 " > SPACE. Changed script to store unquoted versions of
9968 names and add quotes on output. It was also omitting some
9969 names from the lookup table if they were given a default
9970 value (that is if SN is missing it is given the same
9971 value as LN and vice versa), these are now added on the
9972 grounds that if an object has a name we should be able to
9973 look it up. Finally added warning output when duplicate
9974 short or long names are found.
9977 *) Changes needed for Tandem NSK.
9978 [Scott Uroff <scott@xypro.com>]
9980 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
9981 RSA_padding_check_SSLv23(), special padding was never detected
9982 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
9983 version rollback attacks was not effective.
9985 In s23_clnt.c, don't use special rollback-attack detection padding
9986 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
9987 client; similarly, in s23_srvr.c, don't do the rollback check if
9988 SSL 2.0 is the only protocol enabled in the server.
9991 *) Make it possible to get hexdumps of unprintable data with 'openssl
9992 asn1parse'. By implication, the functions ASN1_parse_dump() and
9993 BIO_dump_indent() are added.
9996 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
9997 these print out strings and name structures based on various
9998 flags including RFC2253 support and proper handling of
9999 multibyte characters. Added options to the 'x509' utility
10000 to allow the various flags to be set.
10003 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
10004 Also change the functions X509_cmp_current_time() and
10005 X509_gmtime_adj() work with an ASN1_TIME structure,
10006 this will enable certificates using GeneralizedTime in validity
10007 dates to be checked.
10010 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
10011 negative public key encodings) on by default,
10012 NO_NEG_PUBKEY_BUG can be set to disable it.
10015 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
10016 content octets. An i2c_ASN1_OBJECT is unnecessary because
10017 the encoding can be trivially obtained from the structure.
10020 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
10021 not read locks (CRYPTO_r_[un]lock).
10024 *) A first attempt at creating official support for shared
10025 libraries through configuration. I've kept it so the
10026 default is static libraries only, and the OpenSSL programs
10027 are always statically linked for now, but there are
10028 preparations for dynamic linking in place.
10029 This has been tested on Linux and Tru64.
10032 *) Randomness polling function for Win9x, as described in:
10033 Peter Gutmann, Software Generation of Practically Strong
10037 *) Fix so PRNG is seeded in req if using an already existing
10041 *) New options to smime application. -inform and -outform
10042 allow alternative formats for the S/MIME message including
10043 PEM and DER. The -content option allows the content to be
10044 specified separately. This should allow things like Netscape
10045 form signing output easier to verify.
10048 *) Fix the ASN1 encoding of tags using the 'long form'.
10051 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
10052 STRING types. These convert content octets to and from the
10053 underlying type. The actual tag and length octets are
10054 already assumed to have been read in and checked. These
10055 are needed because all other string types have virtually
10056 identical handling apart from the tag. By having versions
10057 of the ASN1 functions that just operate on content octets
10058 IMPLICIT tagging can be handled properly. It also allows
10059 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
10060 and ASN1_INTEGER are identical apart from the tag.
10063 *) Change the handling of OID objects as follows:
10065 - New object identifiers are inserted in objects.txt, following
10066 the syntax given in objects.README.
10067 - objects.pl is used to process obj_mac.num and create a new
10069 - obj_dat.pl is used to create a new obj_dat.h, using the data in
10072 This is currently kind of a hack, and the perl code in objects.pl
10073 isn't very elegant, but it works as I intended. The simplest way
10074 to check that it worked correctly is to look in obj_dat.h and
10075 check the array nid_objs and make sure the objects haven't moved
10076 around (this is important!). Additions are OK, as well as
10077 consistent name changes.
10080 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
10083 *) Addition of the command line parameter '-rand file' to 'openssl req'.
10084 The given file adds to whatever has already been seeded into the
10085 random pool through the RANDFILE configuration file option or
10086 environment variable, or the default random state file.
10089 *) mkstack.pl now sorts each macro group into lexical order.
10090 Previously the output order depended on the order the files
10091 appeared in the directory, resulting in needless rewriting
10095 *) Patches to make OpenSSL compile under Win32 again. Mostly
10096 work arounds for the VC++ problem that it treats func() as
10097 func(void). Also stripped out the parts of mkdef.pl that
10098 added extra typesafe functions: these no longer exist.
10101 *) Reorganisation of the stack code. The macros are now all
10102 collected in safestack.h . Each macro is defined in terms of
10103 a "stack macro" of the form SKM_<name>(type, a, b). The
10104 DEBUG_SAFESTACK is now handled in terms of function casts,
10105 this has the advantage of retaining type safety without the
10106 use of additional functions. If DEBUG_SAFESTACK is not defined
10107 then the non typesafe macros are used instead. Also modified the
10108 mkstack.pl script to handle the new form. Needs testing to see
10109 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
10110 the default if no major problems. Similar behaviour for ASN1_SET_OF
10111 and PKCS12_STACK_OF.
10114 *) When some versions of IIS use the 'NET' form of private key the
10115 key derivation algorithm is different. Normally MD5(password) is
10116 used as a 128 bit RC4 key. In the modified case
10117 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
10118 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
10119 as the old Netscape_RSA functions except they have an additional
10120 'sgckey' parameter which uses the modified algorithm. Also added
10121 an -sgckey command line option to the rsa utility. Thanks to
10122 Adrian Peck <bertie@ncipher.com> for posting details of the modified
10123 algorithm to openssl-dev.
10126 *) The evp_local.h macros were using 'c.##kname' which resulted in
10127 invalid expansion on some systems (SCO 5.0.5 for example).
10128 Corrected to 'c.kname'.
10129 [Phillip Porch <root@theporch.com>]
10131 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
10132 a STACK of email addresses from a certificate or request, these look
10133 in the subject name and the subject alternative name extensions and
10134 omit any duplicate addresses.
10137 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
10138 This makes DSA verification about 2 % faster.
10141 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
10142 (meaning that now 2^5 values will be precomputed, which is only 4 KB
10143 plus overhead for 1024 bit moduli).
10144 This makes exponentiations about 0.5 % faster for 1024 bit
10145 exponents (as measured by "openssl speed rsa2048").
10148 *) Rename memory handling macros to avoid conflicts with other
10150 Malloc => OPENSSL_malloc
10151 Malloc_locked => OPENSSL_malloc_locked
10152 Realloc => OPENSSL_realloc
10153 Free => OPENSSL_free
10156 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
10157 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
10160 *) CygWin32 support.
10161 [John Jarvie <jjarvie@newsguy.com>]
10163 *) The type-safe stack code has been rejigged. It is now only compiled
10164 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
10165 by default all type-specific stack functions are "#define"d back to
10166 standard stack functions. This results in more streamlined output
10167 but retains the type-safety checking possibilities of the original
10171 *) The STACK code has been cleaned up, and certain type declarations
10172 that didn't make a lot of sense have been brought in line. This has
10173 also involved a cleanup of sorts in safestack.h to more correctly
10174 map type-safe stack functions onto their plain stack counterparts.
10175 This work has also resulted in a variety of "const"ifications of
10176 lots of the code, especially "_cmp" operations which should normally
10177 be prototyped with "const" parameters anyway.
10180 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
10181 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
10182 (The PRNG state consists of two parts, the large pool 'state' and 'md',
10183 where all of 'md' is used each time the PRNG is used, but 'state'
10184 is used only indexed by a cyclic counter. As entropy may not be
10185 well distributed from the beginning, 'md' is important as a
10186 chaining variable. However, the output function chains only half
10187 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
10188 all of 'md', and seeding with STATE_SIZE dummy bytes will result
10189 in all of 'state' being rewritten, with the new values depending
10190 on virtually all of 'md'. This overcomes the 80 bit limitation.)
10193 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
10194 the handshake is continued after ssl_verify_cert_chain();
10195 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
10196 can lead to 'unexplainable' connection aborts later.
10197 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
10199 *) Major EVP API cipher revision.
10200 Add hooks for extra EVP features. This allows various cipher
10201 parameters to be set in the EVP interface. Support added for variable
10202 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
10203 setting of RC2 and RC5 parameters.
10205 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
10208 Remove lots of duplicated code from the EVP library. For example *every*
10209 cipher init() function handles the 'iv' in the same way according to the
10210 cipher mode. They also all do nothing if the 'key' parameter is NULL and
10211 for CFB and OFB modes they zero ctx->num.
10213 New functionality allows removal of S/MIME code RC2 hack.
10215 Most of the routines have the same form and so can be declared in terms
10218 By shifting this to the top level EVP_CipherInit() it can be removed from
10219 all individual ciphers. If the cipher wants to handle IVs or keys
10220 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
10223 Change lots of functions like EVP_EncryptUpdate() to now return a
10224 value: although software versions of the algorithms cannot fail
10225 any installed hardware versions can.
10228 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
10229 this option is set, tolerate broken clients that send the negotiated
10230 protocol version number instead of the requested protocol version
10234 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
10235 i.e. non-zero for export ciphersuites, zero otherwise.
10236 Previous versions had this flag inverted, inconsistent with
10237 rsa_tmp_cb (..._TMP_RSA_CB).
10238 [Bodo Moeller; problem reported by Amit Chopra]
10240 *) Add missing DSA library text string. Work around for some IIS
10241 key files with invalid SEQUENCE encoding.
10244 *) Add a document (doc/standards.txt) that list all kinds of standards
10245 and so on that are implemented in OpenSSL.
10248 *) Enhance c_rehash script. Old version would mishandle certificates
10249 with the same subject name hash and wouldn't handle CRLs at all.
10250 Added -fingerprint option to crl utility, to support new c_rehash
10254 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
10257 *) Fix for SSL server purpose checking. Server checking was
10258 rejecting certificates which had extended key usage present
10259 but no ssl client purpose.
10260 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
10262 *) Make PKCS#12 code work with no password. The PKCS#12 spec
10263 is a little unclear about how a blank password is handled.
10264 Since the password in encoded as a BMPString with terminating
10265 double NULL a zero length password would end up as just the
10266 double NULL. However no password at all is different and is
10267 handled differently in the PKCS#12 key generation code. NS
10268 treats a blank password as zero length. MSIE treats it as no
10269 password on export: but it will try both on import. We now do
10270 the same: PKCS12_parse() tries zero length and no password if
10271 the password is set to "" or NULL (NULL is now a valid password:
10272 it wasn't before) as does the pkcs12 application.
10275 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
10276 perror when PEM_read_bio_X509_REQ fails, the error message must
10277 be obtained from the error queue.
10280 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
10281 it in ERR_remove_state if appropriate, and change ERR_get_state
10282 accordingly to avoid race conditions (this is necessary because
10283 thread_hash is no longer constant once set).
10286 *) Bugfix for linux-elf makefile.one.
10289 *) RSA_get_default_method() will now cause a default
10290 RSA_METHOD to be chosen if one doesn't exist already.
10291 Previously this was only set during a call to RSA_new()
10292 or RSA_new_method(NULL) meaning it was possible for
10293 RSA_get_default_method() to return NULL.
10296 *) Added native name translation to the existing DSO code
10297 that will convert (if the flag to do so is set) filenames
10298 that are sufficiently small and have no path information
10299 into a canonical native form. Eg. "blah" converted to
10300 "libblah.so" or "blah.dll" etc.
10303 *) New function ERR_error_string_n(e, buf, len) which is like
10304 ERR_error_string(e, buf), but writes at most 'len' bytes
10305 including the 0 terminator. For ERR_error_string_n, 'buf'
10307 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
10309 *) CONF library reworked to become more general. A new CONF
10310 configuration file reader "class" is implemented as well as a
10311 new functions (NCONF_*, for "New CONF") to handle it. The now
10312 old CONF_* functions are still there, but are reimplemented to
10313 work in terms of the new functions. Also, a set of functions
10314 to handle the internal storage of the configuration data is
10315 provided to make it easier to write new configuration file
10316 reader "classes" (I can definitely see something reading a
10317 configuration file in XML format, for example), called _CONF_*,
10318 or "the configuration storage API"...
10320 The new configuration file reading functions are:
10322 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
10323 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
10325 NCONF_default, NCONF_WIN32
10327 NCONF_dump_fp, NCONF_dump_bio
10329 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
10330 NCONF_new creates a new CONF object. This works in the same way
10331 as other interfaces in OpenSSL, like the BIO interface.
10332 NCONF_dump_* dump the internal storage of the configuration file,
10333 which is useful for debugging. All other functions take the same
10334 arguments as the old CONF_* functions wth the exception of the
10335 first that must be a `CONF *' instead of a `LHASH *'.
10337 To make it easer to use the new classes with the old CONF_* functions,
10338 the function CONF_set_default_method is provided.
10341 *) Add '-tls1' option to 'openssl ciphers', which was already
10342 mentioned in the documentation but had not been implemented.
10343 (This option is not yet really useful because even the additional
10344 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
10347 *) Initial DSO code added into libcrypto for letting OpenSSL (and
10348 OpenSSL-based applications) load shared libraries and bind to
10349 them in a portable way.
10350 [Geoff Thorpe, with contributions from Richard Levitte]
10352 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
10354 *) Make sure _lrotl and _lrotr are only used with MSVC.
10356 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
10357 (the default implementation of RAND_status).
10359 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
10360 to '-clrext' (= clear extensions), as intended and documented.
10361 [Bodo Moeller; inconsistency pointed out by Michael Attili
10362 <attili@amaxo.com>]
10364 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
10365 was larger than the MD block size.
10366 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
10368 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
10369 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
10370 using the passed key: if the passed key was a private key the result
10371 of X509_print(), for example, would be to print out all the private key
10375 *) des_quad_cksum() byte order bug fix.
10376 [Ulf Möller, using the problem description in krb4-0.9.7, where
10377 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
10379 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
10381 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
10383 *) For easily testing in shell scripts whether some command
10384 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
10385 returns with exit code 0 iff no command of the given name is available.
10386 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
10387 the output goes to stdout and nothing is printed to stderr.
10388 Additional arguments are always ignored.
10390 Since for each cipher there is a command of the same name,
10391 the 'no-cipher' compilation switches can be tested this way.
10393 ('openssl no-XXX' is not able to detect pseudo-commands such
10394 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
10397 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
10400 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
10401 is set; it will be thrown away anyway because each handshake creates
10403 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
10404 to parameters -- in previous versions (since OpenSSL 0.9.3) the
10405 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
10406 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
10409 *) New s_client option -ign_eof: EOF at stdin is ignored, and
10410 'Q' and 'R' lose their special meanings (quit/renegotiate).
10411 This is part of what -quiet does; unlike -quiet, -ign_eof
10412 does not suppress any output.
10415 *) Add compatibility options to the purpose and trust code. The
10416 purpose X509_PURPOSE_ANY is "any purpose" which automatically
10417 accepts a certificate or CA, this was the previous behaviour,
10418 with all the associated security issues.
10420 X509_TRUST_COMPAT is the old trust behaviour: only and
10421 automatically trust self signed roots in certificate store. A
10422 new trust setting X509_TRUST_DEFAULT is used to specify that
10423 a purpose has no associated trust setting and it should instead
10424 use the value in the default purpose.
10427 *) Fix the PKCS#8 DSA private key code so it decodes keys again
10428 and fix a memory leak.
10431 *) In util/mkerr.pl (which implements 'make errors'), preserve
10432 reason strings from the previous version of the .c file, as
10433 the default to have only downcase letters (and digits) in
10434 automatically generated reasons codes is not always appropriate.
10437 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
10438 using strerror. Previously, ERR_reason_error_string() returned
10439 library names as reason strings for SYSerr; but SYSerr is a special
10440 case where small numbers are errno values, not library numbers.
10443 *) Add '-dsaparam' option to 'openssl dhparam' application. This
10444 converts DSA parameters into DH parameters. (When creating parameters,
10445 DSA_generate_parameters is used.)
10448 *) Include 'length' (recommended exponent length) in C code generated
10449 by 'openssl dhparam -C'.
10452 *) The second argument to set_label in perlasm was already being used
10453 so couldn't be used as a "file scope" flag. Moved to third argument
10457 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
10458 instead of RAND_bytes for encryption IVs and salts.
10461 *) Include RAND_status() into RAND_METHOD instead of implementing
10462 it only for md_rand.c Otherwise replacing the PRNG by calling
10463 RAND_set_rand_method would be impossible.
10466 *) Don't let DSA_generate_key() enter an infinite loop if the random
10467 number generation fails.
10470 *) New 'rand' application for creating pseudo-random output.
10473 *) Added configuration support for Linux/IA64
10474 [Rolf Haberrecker <rolf@suse.de>]
10476 *) Assembler module support for Mingw32.
10479 *) Shared library support for HPUX (in shlib/).
10480 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
10482 *) Shared library support for Solaris gcc.
10483 [Lutz Behnke <behnke@trustcenter.de>]
10485 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
10487 *) PKCS7_encrypt() was adding text MIME headers twice because they
10488 were added manually and by SMIME_crlf_copy().
10491 *) In bntest.c don't call BN_rand with zero bits argument.
10492 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
10494 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
10495 case was implemented. This caused BN_div_recp() to fail occasionally.
10498 *) Add an optional second argument to the set_label() in the perl
10499 assembly language builder. If this argument exists and is set
10500 to 1 it signals that the assembler should use a symbol whose
10501 scope is the entire file, not just the current function. This
10502 is needed with MASM which uses the format label:: for this scope.
10503 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
10505 *) Change the ASN1 types so they are typedefs by default. Before
10506 almost all types were #define'd to ASN1_STRING which was causing
10507 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
10511 *) Change names of new functions to the new get1/get0 naming
10512 convention: After 'get1', the caller owns a reference count
10513 and has to call ..._free; 'get0' returns a pointer to some
10514 data structure without incrementing reference counters.
10515 (Some of the existing 'get' functions increment a reference
10516 counter, some don't.)
10517 Similarly, 'set1' and 'add1' functions increase reference
10518 counters or duplicate objects.
10521 *) Allow for the possibility of temp RSA key generation failure:
10522 the code used to assume it always worked and crashed on failure.
10525 *) Fix potential buffer overrun problem in BIO_printf().
10526 [Ulf Möller, using public domain code by Patrick Powell; problem
10527 pointed out by David Sacerdote <das33@cornell.edu>]
10529 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
10530 RAND_egd() and RAND_status(). In the command line application,
10531 the EGD socket can be specified like a seed file using RANDFILE
10535 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
10536 Some CAs (e.g. Verisign) distribute certificates in this form.
10539 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
10540 list to exclude them. This means that no special compilation option
10541 is needed to use anonymous DH: it just needs to be included in the
10545 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
10546 EVP_MD_type. The old functionality is available in a new macro called
10547 EVP_MD_md(). Change code that uses it and update docs.
10550 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
10551 where the 'void *' argument is replaced by a function pointer argument.
10552 Previously 'void *' was abused to point to functions, which works on
10553 many platforms, but is not correct. As these functions are usually
10554 called by macros defined in OpenSSL header files, most source code
10555 should work without changes.
10558 *) <openssl/opensslconf.h> (which is created by Configure) now contains
10559 sections with information on -D... compiler switches used for
10560 compiling the library so that applications can see them. To enable
10561 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
10562 must be defined. E.g.,
10563 #define OPENSSL_ALGORITHM_DEFINES
10564 #include <openssl/opensslconf.h>
10565 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
10566 [Richard Levitte, Ulf and Bodo Möller]
10568 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
10572 *) Change the 'other' type in certificate aux info to a STACK_OF
10573 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
10574 the required ASN1 format: arbitrary types determined by an OID.
10577 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
10578 argument to 'req'. This is not because the function is newer or
10579 better than others it just uses the work 'NEW' in the certificate
10580 request header lines. Some software needs this.
10583 *) Reorganise password command line arguments: now passwords can be
10584 obtained from various sources. Delete the PEM_cb function and make
10585 it the default behaviour: i.e. if the callback is NULL and the
10586 usrdata argument is not NULL interpret it as a null terminated pass
10587 phrase. If usrdata and the callback are NULL then the pass phrase
10588 is prompted for as usual.
10591 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
10592 the support is automatically enabled. The resulting binaries will
10593 autodetect the card and use it if present.
10594 [Ben Laurie and Compaq Inc.]
10596 *) Work around for Netscape hang bug. This sends certificate request
10597 and server done in one record. Since this is perfectly legal in the
10598 SSL/TLS protocol it isn't a "bug" option and is on by default. See
10599 the bugs/SSLv3 entry for more info.
10602 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
10605 *) Add -rand argument to smime and pkcs12 applications and read/write
10609 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
10612 *) Add command line password options to the remaining applications.
10615 *) Bug fix for BN_div_recp() for numerators with an even number of
10619 *) More tests in bntest.c, and changed test_bn output.
10622 *) ./config recognizes MacOS X now.
10625 *) Bug fix for BN_div() when the first words of num and divisor are
10626 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
10629 *) Add support for various broken PKCS#8 formats, and command line
10630 options to produce them.
10633 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
10634 get temporary BIGNUMs from a BN_CTX.
10637 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
10641 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
10642 include a #define from the old name to the new. The original intent
10643 was that statically linked binaries could for example just call
10644 SSLeay_add_all_ciphers() to just add ciphers to the table and not
10645 link with digests. This never worked because SSLeay_add_all_digests()
10646 and SSLeay_add_all_ciphers() were in the same source file so calling
10647 one would link with the other. They are now in separate source files.
10650 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
10653 *) Use a less unusual form of the Miller-Rabin primality test (it used
10654 a binary algorithm for exponentiation integrated into the Miller-Rabin
10655 loop, our standard modexp algorithms are faster).
10658 *) Support for the EBCDIC character set completed.
10659 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
10661 *) Source code cleanups: use const where appropriate, eliminate casts,
10662 use void * instead of char * in lhash.
10665 *) Bugfix: ssl3_send_server_key_exchange was not restartable
10666 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
10667 this the server could overwrite ephemeral keys that the client
10671 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
10672 using 50 iterations of the Rabin-Miller test.
10674 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
10675 iterations of the Rabin-Miller test as required by the appendix
10676 to FIPS PUB 186[-1]) instead of DSA_is_prime.
10677 As BN_is_prime_fasttest includes trial division, DSA parameter
10678 generation becomes much faster.
10680 This implies a change for the callback functions in DSA_is_prime
10681 and DSA_generate_parameters: The callback function is called once
10682 for each positive witness in the Rabin-Miller test, not just
10683 occasionally in the inner loop; and the parameters to the
10684 callback function now provide an iteration count for the outer
10685 loop rather than for the current invocation of the inner loop.
10686 DSA_generate_parameters additionally can call the callback
10687 function with an 'iteration count' of -1, meaning that a
10688 candidate has passed the trial division test (when q is generated
10689 from an application-provided seed, trial division is skipped).
10692 *) New function BN_is_prime_fasttest that optionally does trial
10693 division before starting the Rabin-Miller test and has
10694 an additional BN_CTX * argument (whereas BN_is_prime always
10695 has to allocate at least one BN_CTX).
10696 'callback(1, -1, cb_arg)' is called when a number has passed the
10697 trial division stage.
10700 *) Fix for bug in CRL encoding. The validity dates weren't being handled
10704 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
10707 *) New function BN_pseudo_rand().
10710 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
10711 bignum version of BN_from_montgomery() with the working code from
10712 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
10716 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
10717 made it impossible to use the same SSL_SESSION data structure in
10718 SSL2 clients in multiple threads.
10721 *) The return value of RAND_load_file() no longer counts bytes obtained
10722 by stat(). RAND_load_file(..., -1) is new and uses the complete file
10723 to seed the PRNG (previously an explicit byte count was required).
10724 [Ulf Möller, Bodo Möller]
10726 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
10727 used (char *) instead of (void *) and had casts all over the place.
10730 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
10733 *) Retain source code compatibility for BN_prime_checks macro:
10734 BN_is_prime(..., BN_prime_checks, ...) now uses
10735 BN_prime_checks_for_size to determine the appropriate number of
10736 Rabin-Miller iterations.
10739 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
10740 DH_CHECK_P_NOT_SAFE_PRIME.
10741 (Check if this is true? OpenPGP calls them "strong".)
10744 *) Merge the functionality of "dh" and "gendh" programs into a new program
10745 "dhparam". The old programs are retained for now but will handle DH keys
10746 (instead of parameters) in future.
10749 *) Make the ciphers, s_server and s_client programs check the return values
10750 when a new cipher list is set.
10753 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
10754 ciphers. Before when the 56bit ciphers were enabled the sorting was
10757 The syntax for the cipher sorting has been extended to support sorting by
10758 cipher-strength (using the strength_bits hard coded in the tables).
10759 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
10761 Fix a bug in the cipher-command parser: when supplying a cipher command
10762 string with an "undefined" symbol (neither command nor alphanumeric
10763 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
10764 an error is flagged.
10766 Due to the strength-sorting extension, the code of the
10767 ssl_create_cipher_list() function was completely rearranged. I hope that
10768 the readability was also increased :-)
10769 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10771 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
10772 for the first serial number and places 2 in the serial number file. This
10773 avoids problems when the root CA is created with serial number zero and
10774 the first user certificate has the same issuer name and serial number
10778 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
10779 the new code. Add documentation for this stuff.
10782 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
10783 X509_*() to X509at_*() on the grounds that they don't handle X509
10784 structures and behave in an analogous way to the X509v3 functions:
10785 they shouldn't be called directly but wrapper functions should be used
10788 So we also now have some wrapper functions that call the X509at functions
10789 when passed certificate requests. (TO DO: similar things can be done with
10790 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
10791 things. Some of these need some d2i or i2d and print functionality
10792 because they handle more complex structures.)
10795 *) Add missing #ifndefs that caused missing symbols when building libssl
10796 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
10797 NO_RSA in ssl/s2*.c.
10798 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
10800 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
10801 has a return value which indicates the quality of the random data
10802 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
10803 error queue. New function RAND_pseudo_bytes() generates output that is
10804 guaranteed to be unique but not unpredictable. RAND_add is like
10805 RAND_seed, but takes an extra argument for an entropy estimate
10806 (RAND_seed always assumes full entropy).
10809 *) Do more iterations of Rabin-Miller probable prime test (specifically,
10810 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
10811 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
10812 in crypto/bn/bn_prime.c for the complete table). This guarantees a
10813 false-positive rate of at most 2^-80 for random input.
10816 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
10819 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
10820 in the 0.9.5 release), this returns the chain
10821 from an X509_CTX structure with a dup of the stack and all
10822 the X509 reference counts upped: so the stack will exist
10823 after X509_CTX_cleanup() has been called. Modify pkcs12.c
10826 Also make SSL_SESSION_print() print out the verify return
10830 *) Add manpage for the pkcs12 command. Also change the default
10831 behaviour so MAC iteration counts are used unless the new
10832 -nomaciter option is used. This improves file security and
10833 only older versions of MSIE (4.0 for example) need it.
10836 *) Honor the no-xxx Configure options when creating .DEF files.
10839 *) Add PKCS#10 attributes to field table: challengePassword,
10840 unstructuredName and unstructuredAddress. These are taken from
10841 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
10842 international characters are used.
10844 More changes to X509_ATTRIBUTE code: allow the setting of types
10845 based on strings. Remove the 'loc' parameter when adding
10846 attributes because these will be a SET OF encoding which is sorted
10850 *) Initial changes to the 'req' utility to allow request generation
10851 automation. This will allow an application to just generate a template
10852 file containing all the field values and have req construct the
10855 Initial support for X509_ATTRIBUTE handling. Stacks of these are
10856 used all over the place including certificate requests and PKCS#7
10857 structures. They are currently handled manually where necessary with
10858 some primitive wrappers for PKCS#7. The new functions behave in a
10859 manner analogous to the X509 extension functions: they allow
10860 attributes to be looked up by NID and added.
10862 Later something similar to the X509V3 code would be desirable to
10863 automatically handle the encoding, decoding and printing of the
10864 more complex types. The string types like challengePassword can
10865 be handled by the string table functions.
10867 Also modified the multi byte string table handling. Now there is
10868 a 'global mask' which masks out certain types. The table itself
10869 can use the flag STABLE_NO_MASK to ignore the mask setting: this
10870 is useful when for example there is only one permissible type
10871 (as in countryName) and using the mask might result in no valid
10875 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
10876 SSL_get_peer_finished to allow applications to obtain the latest
10877 Finished messages sent to the peer or expected from the peer,
10878 respectively. (SSL_get_peer_finished is usually the Finished message
10879 actually received from the peer, otherwise the protocol will be aborted.)
10881 As the Finished message are message digests of the complete handshake
10882 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
10883 be used for external authentication procedures when the authentication
10884 provided by SSL/TLS is not desired or is not enough.
10887 *) Enhanced support for Alpha Linux is added. Now ./config checks if
10888 the host supports BWX extension and if Compaq C is present on the
10889 $PATH. Just exploiting of the BWX extension results in 20-30%
10890 performance kick for some algorithms, e.g. DES and RC4 to mention
10891 a couple. Compaq C in turn generates ~20% faster code for MD5 and
10895 *) Add support for MS "fast SGC". This is arguably a violation of the
10896 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
10897 weak crypto and after checking the certificate is SGC a second one
10898 with strong crypto. MS SGC stops the first handshake after receiving
10899 the server certificate message and sends a second client hello. Since
10900 a server will typically do all the time consuming operations before
10901 expecting any further messages from the client (server key exchange
10902 is the most expensive) there is little difference between the two.
10904 To get OpenSSL to support MS SGC we have to permit a second client
10905 hello message after we have sent server done. In addition we have to
10906 reset the MAC if we do get this second client hello.
10909 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
10910 if a DER encoded private key is RSA or DSA traditional format. Changed
10911 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
10912 format DER encoded private key. Newer code should use PKCS#8 format which
10913 has the key type encoded in the ASN1 structure. Added DER private key
10914 support to pkcs8 application.
10917 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
10918 ciphersuites has been selected (as required by the SSL 3/TLS 1
10919 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
10920 is set, we interpret this as a request to violate the specification
10921 (the worst that can happen is a handshake failure, and 'correct'
10922 behaviour would result in a handshake failure anyway).
10925 *) In SSL_CTX_add_session, take into account that there might be multiple
10926 SSL_SESSION structures with the same session ID (e.g. when two threads
10927 concurrently obtain them from an external cache).
10928 The internal cache can handle only one SSL_SESSION with a given ID,
10929 so if there's a conflict, we now throw out the old one to achieve
10933 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
10934 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
10935 some routines that use cipher OIDs: some ciphers do not have OIDs
10936 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
10940 *) Simplify the trust setting structure and code. Now we just have
10941 two sequences of OIDs for trusted and rejected settings. These will
10942 typically have values the same as the extended key usage extension
10943 and any application specific purposes.
10945 The trust checking code now has a default behaviour: it will just
10946 check for an object with the same NID as the passed id. Functions can
10947 be provided to override either the default behaviour or the behaviour
10948 for a given id. SSL client, server and email already have functions
10949 in place for compatibility: they check the NID and also return "trusted"
10950 if the certificate is self signed.
10953 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
10954 traditional format into an EVP_PKEY structure.
10957 *) Add a password callback function PEM_cb() which either prompts for
10958 a password if usr_data is NULL or otherwise assumes it is a null
10959 terminated password. Allow passwords to be passed on command line
10960 environment or config files in a few more utilities.
10963 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
10964 keys. Add some short names for PKCS#8 PBE algorithms and allow them
10965 to be specified on the command line for the pkcs8 and pkcs12 utilities.
10966 Update documentation.
10969 *) Support for ASN1 "NULL" type. This could be handled before by using
10970 ASN1_TYPE but there wasn't any function that would try to read a NULL
10971 and produce an error if it couldn't. For compatibility we also have
10972 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
10973 don't allocate anything because they don't need to.
10976 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
10978 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
10980 *) Rebuild of the memory allocation routines used by OpenSSL code and
10981 possibly others as well. The purpose is to make an interface that
10982 provide hooks so anyone can build a separate set of allocation and
10983 deallocation routines to be used by OpenSSL, for example memory
10984 pool implementations, or something else, which was previously hard
10985 since Malloc(), Realloc() and Free() were defined as macros having
10986 the values malloc, realloc and free, respectively (except for Win32
10987 compilations). The same is provided for memory debugging code.
10988 OpenSSL already comes with functionality to find memory leaks, but
10989 this gives people a chance to debug other memory problems.
10991 With these changes, a new set of functions and macros have appeared:
10993 CRYPTO_set_mem_debug_functions() [F]
10994 CRYPTO_get_mem_debug_functions() [F]
10995 CRYPTO_dbg_set_options() [F]
10996 CRYPTO_dbg_get_options() [F]
10997 CRYPTO_malloc_debug_init() [M]
10999 The memory debug functions are NULL by default, unless the library
11000 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
11001 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
11002 gives the standard debugging functions that come with OpenSSL) or
11003 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
11004 provided by the library user) must be used. When the standard
11005 debugging functions are used, CRYPTO_dbg_set_options can be used to
11006 request additional information:
11007 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
11008 the CRYPTO_MDEBUG_xxx macro when compiling the library.
11010 Also, things like CRYPTO_set_mem_functions will always give the
11011 expected result (the new set of functions is used for allocation
11012 and deallocation) at all times, regardless of platform and compiler
11015 To finish it up, some functions that were never use in any other
11016 way than through macros have a new API and new semantic:
11018 CRYPTO_dbg_malloc()
11019 CRYPTO_dbg_realloc()
11022 All macros of value have retained their old syntax.
11023 [Richard Levitte and Bodo Moeller]
11025 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
11026 ordering of SMIMECapabilities wasn't in "strength order" and there
11027 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
11031 *) Some ASN1 types with illegal zero length encoding (INTEGER,
11032 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
11033 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
11035 *) Merge in my S/MIME library for OpenSSL. This provides a simple
11036 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
11037 functionality to handle multipart/signed properly) and a utility
11038 called 'smime' to call all this stuff. This is based on code I
11039 originally wrote for Celo who have kindly allowed it to be
11040 included in OpenSSL.
11043 *) Add variants des_set_key_checked and des_set_key_unchecked of
11044 des_set_key (aka des_key_sched). Global variable des_check_key
11045 decides which of these is called by des_set_key; this way
11046 des_check_key behaves as it always did, but applications and
11047 the library itself, which was buggy for des_check_key == 1,
11048 have a cleaner way to pick the version they need.
11051 *) New function PKCS12_newpass() which changes the password of a
11055 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
11056 dynamic mix. In both cases the ids can be used as an index into the
11057 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
11058 functions so they accept a list of the field values and the
11059 application doesn't need to directly manipulate the X509_TRUST
11063 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
11067 *) Modify the way the V3 extension code looks up extensions. This now
11068 works in a similar way to the object code: we have some "standard"
11069 extensions in a static table which is searched with OBJ_bsearch()
11070 and the application can add dynamic ones if needed. The file
11071 crypto/x509v3/ext_dat.h now has the info: this file needs to be
11072 updated whenever a new extension is added to the core code and kept
11073 in ext_nid order. There is a simple program 'tabtest.c' which checks
11074 this. New extensions are not added too often so this file can readily
11075 be maintained manually.
11077 There are two big advantages in doing things this way. The extensions
11078 can be looked up immediately and no longer need to be "added" using
11079 X509V3_add_standard_extensions(): this function now does nothing.
11080 [Side note: I get *lots* of email saying the extension code doesn't
11081 work because people forget to call this function]
11082 Also no dynamic allocation is done unless new extensions are added:
11083 so if we don't add custom extensions there is no need to call
11084 X509V3_EXT_cleanup().
11087 *) Modify enc utility's salting as follows: make salting the default. Add a
11088 magic header, so unsalted files fail gracefully instead of just decrypting
11089 to garbage. This is because not salting is a big security hole, so people
11090 should be discouraged from doing it.
11093 *) Fixes and enhancements to the 'x509' utility. It allowed a message
11094 digest to be passed on the command line but it only used this
11095 parameter when signing a certificate. Modified so all relevant
11096 operations are affected by the digest parameter including the
11097 -fingerprint and -x509toreq options. Also -x509toreq choked if a
11098 DSA key was used because it didn't fix the digest.
11101 *) Initial certificate chain verify code. Currently tests the untrusted
11102 certificates for consistency with the verify purpose (which is set
11103 when the X509_STORE_CTX structure is set up) and checks the pathlength.
11105 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
11106 this is because it will reject chains with invalid extensions whereas
11107 every previous version of OpenSSL and SSLeay made no checks at all.
11109 Trust code: checks the root CA for the relevant trust settings. Trust
11110 settings have an initial value consistent with the verify purpose: e.g.
11111 if the verify purpose is for SSL client use it expects the CA to be
11112 trusted for SSL client use. However the default value can be changed to
11113 permit custom trust settings: one example of this would be to only trust
11114 certificates from a specific "secure" set of CAs.
11116 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
11117 which should be used for version portability: especially since the
11118 verify structure is likely to change more often now.
11120 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
11121 to set them. If not set then assume SSL clients will verify SSL servers
11124 Two new options to the verify program: -untrusted allows a set of
11125 untrusted certificates to be passed in and -purpose which sets the
11126 intended purpose of the certificate. If a purpose is set then the
11127 new chain verify code is used to check extension consistency.
11130 *) Support for the authority information access extension.
11133 *) Modify RSA and DSA PEM read routines to transparently handle
11134 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
11135 public keys in a format compatible with certificate
11136 SubjectPublicKeyInfo structures. Unfortunately there were already
11137 functions called *_PublicKey_* which used various odd formats so
11138 these are retained for compatibility: however the DSA variants were
11139 never in a public release so they have been deleted. Changed dsa/rsa
11140 utilities to handle the new format: note no releases ever handled public
11141 keys so we should be OK.
11143 The primary motivation for this change is to avoid the same fiasco
11144 that dogs private keys: there are several incompatible private key
11145 formats some of which are standard and some OpenSSL specific and
11146 require various evil hacks to allow partial transparent handling and
11147 even then it doesn't work with DER formats. Given the option anything
11148 other than PKCS#8 should be dumped: but the other formats have to
11149 stay in the name of compatibility.
11151 With public keys and the benefit of hindsight one standard format
11152 is used which works with EVP_PKEY, RSA or DSA structures: though
11153 it clearly returns an error if you try to read the wrong kind of key.
11155 Added a -pubkey option to the 'x509' utility to output the public key.
11156 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
11157 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
11158 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
11159 that do the same as the EVP_PKEY_assign_*() except they up the
11160 reference count of the added key (they don't "swallow" the
11164 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
11165 CRLs would fail if the file contained no certificates or no CRLs:
11166 added a new function to read in both types and return the number
11167 read: this means that if none are read it will be an error. The
11168 DER versions of the certificate and CRL reader would always fail
11169 because it isn't possible to mix certificates and CRLs in DER format
11170 without choking one or the other routine. Changed this to just read
11171 a certificate: this is the best we can do. Also modified the code
11172 in apps/verify.c to take notice of return codes: it was previously
11173 attempting to read in certificates from NULL pointers and ignoring
11174 any errors: this is one reason why the cert and CRL reader seemed
11175 to work. It doesn't check return codes from the default certificate
11176 routines: these may well fail if the certificates aren't installed.
11179 *) Code to support otherName option in GeneralName.
11182 *) First update to verify code. Change the verify utility
11183 so it warns if it is passed a self signed certificate:
11184 for consistency with the normal behaviour. X509_verify
11185 has been modified to it will now verify a self signed
11186 certificate if *exactly* the same certificate appears
11187 in the store: it was previously impossible to trust a
11188 single self signed certificate. This means that:
11189 openssl verify ss.pem
11190 now gives a warning about a self signed certificate but
11191 openssl verify -CAfile ss.pem ss.pem
11195 *) For servers, store verify_result in SSL_SESSION data structure
11196 (and add it to external session representation).
11197 This is needed when client certificate verifications fails,
11198 but an application-provided verification callback (set by
11199 SSL_CTX_set_cert_verify_callback) allows accepting the session
11200 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
11201 but returns 1): When the session is reused, we have to set
11202 ssl->verify_result to the appropriate error code to avoid
11204 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
11206 *) Fix a bug in the new PKCS#7 code: it didn't consider the
11207 case in PKCS7_dataInit() where the signed PKCS7 structure
11208 didn't contain any existing data because it was being created.
11209 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
11211 *) Add a salt to the key derivation routines in enc.c. This
11212 forms the first 8 bytes of the encrypted file. Also add a
11213 -S option to allow a salt to be input on the command line.
11216 *) New function X509_cmp(). Oddly enough there wasn't a function
11217 to compare two certificates. We do this by working out the SHA1
11218 hash and comparing that. X509_cmp() will be needed by the trust
11222 *) SSL_get1_session() is like SSL_get_session(), but increments
11223 the reference count in the SSL_SESSION returned.
11224 [Geoff Thorpe <geoff@eu.c2.net>]
11226 *) Fix for 'req': it was adding a null to request attributes.
11227 Also change the X509_LOOKUP and X509_INFO code to handle
11228 certificate auxiliary information.
11231 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
11235 *) Add the possibility to add extra information to the memory leak
11236 detecting output, to form tracebacks, showing from where each
11237 allocation was originated: CRYPTO_push_info("constant string") adds
11238 the string plus current file name and line number to a per-thread
11239 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
11240 is like calling CYRPTO_pop_info() until the stack is empty.
11241 Also updated memory leak detection code to be multi-thread-safe.
11244 *) Add options -text and -noout to pkcs7 utility and delete the
11245 encryption options which never did anything. Update docs.
11248 *) Add options to some of the utilities to allow the pass phrase
11249 to be included on either the command line (not recommended on
11250 OSes like Unix) or read from the environment. Update the
11251 manpages and fix a few bugs.
11254 *) Add a few manpages for some of the openssl commands.
11257 *) Fix the -revoke option in ca. It was freeing up memory twice,
11258 leaking and not finding already revoked certificates.
11261 *) Extensive changes to support certificate auxiliary information.
11262 This involves the use of X509_CERT_AUX structure and X509_AUX
11263 functions. An X509_AUX function such as PEM_read_X509_AUX()
11264 can still read in a certificate file in the usual way but it
11265 will also read in any additional "auxiliary information". By
11266 doing things this way a fair degree of compatibility can be
11267 retained: existing certificates can have this information added
11268 using the new 'x509' options.
11270 Current auxiliary information includes an "alias" and some trust
11271 settings. The trust settings will ultimately be used in enhanced
11272 certificate chain verification routines: currently a certificate
11273 can only be trusted if it is self signed and then it is trusted
11277 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
11278 The problem was that one of the replacement routines had not been working
11279 since SSLeay releases. For now the offending routine has been replaced
11280 with non-optimised assembler. Even so, this now gives around 95%
11281 performance improvement for 1024 bit RSA signs.
11284 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
11285 handling. Most clients have the effective key size in bits equal to
11286 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
11287 A few however don't do this and instead use the size of the decrypted key
11288 to determine the RC2 key length and the AlgorithmIdentifier to determine
11289 the effective key length. In this case the effective key length can still
11290 be 40 bits but the key length can be 168 bits for example. This is fixed
11291 by manually forcing an RC2 key into the EVP_PKEY structure because the
11292 EVP code can't currently handle unusual RC2 key sizes: it always assumes
11293 the key length and effective key length are equal.
11296 *) Add a bunch of functions that should simplify the creation of
11297 X509_NAME structures. Now you should be able to do:
11298 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
11299 and have it automatically work out the correct field type and fill in
11300 the structures. The more adventurous can try:
11301 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
11302 and it will (hopefully) work out the correct multibyte encoding.
11305 *) Change the 'req' utility to use the new field handling and multibyte
11306 copy routines. Before the DN field creation was handled in an ad hoc
11307 way in req, ca, and x509 which was rather broken and didn't support
11308 BMPStrings or UTF8Strings. Since some software doesn't implement
11309 BMPStrings or UTF8Strings yet, they can be enabled using the config file
11310 using the dirstring_type option. See the new comment in the default
11311 openssl.cnf for more info.
11314 *) Make crypto/rand/md_rand.c more robust:
11315 - Assure unique random numbers after fork().
11316 - Make sure that concurrent threads access the global counter and
11317 md serializably so that we never lose entropy in them
11318 or use exactly the same state in multiple threads.
11319 Access to the large state is not always serializable because
11320 the additional locking could be a performance killer, and
11321 md should be large enough anyway.
11324 *) New file apps/app_rand.c with commonly needed functionality
11325 for handling the random seed file.
11327 Use the random seed file in some applications that previously did not:
11329 dsaparam -genkey (which also ignored its '-rand' option),
11332 x509 (when signing).
11333 Except on systems with /dev/urandom, it is crucial to have a random
11334 seed file at least for key creation, DSA signing, and for DH exchanges;
11335 for RSA signatures we could do without one.
11337 gendh and gendsa (unlike genrsa) used to read only the first byte
11338 of each file listed in the '-rand' option. The function as previously
11339 found in genrsa is now in app_rand.c and is used by all programs
11340 that support '-rand'.
11343 *) In RAND_write_file, use mode 0600 for creating files;
11344 don't just chmod when it may be too late.
11347 *) Report an error from X509_STORE_load_locations
11348 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
11351 *) New function ASN1_mbstring_copy() this copies a string in either
11352 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
11353 into an ASN1_STRING type. A mask of permissible types is passed
11354 and it chooses the "minimal" type to use or an error if not type
11358 *) Add function equivalents to the various macros in asn1.h. The old
11359 macros are retained with an M_ prefix. Code inside the library can
11360 use the M_ macros. External code (including the openssl utility)
11361 should *NOT* in order to be "shared library friendly".
11364 *) Add various functions that can check a certificate's extensions
11365 to see if it usable for various purposes such as SSL client,
11366 server or S/MIME and CAs of these types. This is currently
11367 VERY EXPERIMENTAL but will ultimately be used for certificate chain
11368 verification. Also added a -purpose flag to x509 utility to
11369 print out all the purposes.
11372 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
11376 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
11377 for, obtain and decode and extension and obtain its critical flag.
11378 This allows all the necessary extension code to be handled in a
11379 single function call.
11382 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
11383 platforms. See crypto/rc4/rc4_enc.c for further details.
11386 *) New -noout option to asn1parse. This causes no output to be produced
11387 its main use is when combined with -strparse and -out to extract data
11388 from a file (which may not be in ASN.1 format).
11391 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
11392 when producing the local key id.
11393 [Richard Levitte <levitte@stacken.kth.se>]
11395 *) New option -dhparam in s_server. This allows a DH parameter file to be
11396 stated explicitly. If it is not stated then it tries the first server
11397 certificate file. The previous behaviour hard coded the filename
11401 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
11402 a public key to be input or output. For example:
11403 openssl rsa -in key.pem -pubout -out pubkey.pem
11404 Also added necessary DSA public key functions to handle this.
11407 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
11408 in the message. This was handled by allowing
11409 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
11410 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
11412 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
11413 to the end of the strings whereas this didn't. This would cause problems
11414 if strings read with d2i_ASN1_bytes() were later modified.
11415 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
11417 *) Fix for base64 decode bug. When a base64 bio reads only one line of
11418 data and it contains EOF it will end up returning an error. This is
11419 caused by input 46 bytes long. The cause is due to the way base64
11420 BIOs find the start of base64 encoded data. They do this by trying a
11421 trial decode on each line until they find one that works. When they
11422 do a flag is set and it starts again knowing it can pass all the
11423 data directly through the decoder. Unfortunately it doesn't reset
11424 the context it uses. This means that if EOF is reached an attempt
11425 is made to pass two EOFs through the context and this causes the
11426 resulting error. This can also cause other problems as well. As is
11427 usual with these problems it takes *ages* to find and the fix is
11428 trivial: move one line.
11429 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
11431 *) Ugly workaround to get s_client and s_server working under Windows. The
11432 old code wouldn't work because it needed to select() on sockets and the
11433 tty (for keypresses and to see if data could be written). Win32 only
11434 supports select() on sockets so we select() with a 1s timeout on the
11435 sockets and then see if any characters are waiting to be read, if none
11436 are present then we retry, we also assume we can always write data to
11437 the tty. This isn't nice because the code then blocks until we've
11438 received a complete line of data and it is effectively polling the
11439 keyboard at 1s intervals: however it's quite a bit better than not
11440 working at all :-) A dedicated Windows application might handle this
11441 with an event loop for example.
11444 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
11445 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
11446 will be called when RSA_sign() and RSA_verify() are used. This is useful
11447 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
11448 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
11449 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
11450 This necessitated the support of an extra signature type NID_md5_sha1
11451 for SSL signatures and modifications to the SSL library to use it instead
11452 of calling RSA_public_decrypt() and RSA_private_encrypt().
11455 *) Add new -verify -CAfile and -CApath options to the crl program, these
11456 will lookup a CRL issuers certificate and verify the signature in a
11457 similar way to the verify program. Tidy up the crl program so it
11458 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
11459 less strict. It will now permit CRL extensions even if it is not
11460 a V2 CRL: this will allow it to tolerate some broken CRLs.
11463 *) Initialize all non-automatic variables each time one of the openssl
11464 sub-programs is started (this is necessary as they may be started
11465 multiple times from the "OpenSSL>" prompt).
11466 [Lennart Bang, Bodo Moeller]
11468 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
11469 removing all other RSA functionality (this is what NO_RSA does). This
11470 is so (for example) those in the US can disable those operations covered
11471 by the RSA patent while allowing storage and parsing of RSA keys and RSA
11475 *) Non-copying interface to BIO pairs.
11476 (still largely untested)
11479 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
11480 ASCII string. This was handled independently in various places before.
11483 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
11484 UTF8 strings a character at a time.
11487 *) Use client_version from client hello to select the protocol
11488 (s23_srvr.c) and for RSA client key exchange verification
11489 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
11492 *) Add various utility functions to handle SPKACs, these were previously
11493 handled by poking round in the structure internals. Added new function
11494 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
11495 print, verify and generate SPKACs. Based on an original idea from
11496 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
11499 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
11502 *) Allow the config file extension section to be overwritten on the
11503 command line. Based on an original idea from Massimiliano Pala
11504 <madwolf@comune.modena.it>. The new option is called -extensions
11505 and can be applied to ca, req and x509. Also -reqexts to override
11506 the request extensions in req and -crlexts to override the crl extensions
11510 *) Add new feature to the SPKAC handling in ca. Now you can include
11511 the same field multiple times by preceding it by "XXXX." for example:
11514 this is the same syntax as used in the req config file.
11517 *) Allow certificate extensions to be added to certificate requests. These
11518 are specified in a 'req_extensions' option of the req section of the
11519 config file. They can be printed out with the -text option to req but
11520 are otherwise ignored at present.
11523 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
11524 data read consists of only the final block it would not decrypted because
11525 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
11526 A misplaced 'break' also meant the decrypted final block might not be
11527 copied until the next read.
11530 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
11531 a few extra parameters to the DH structure: these will be useful if
11532 for example we want the value of 'q' or implement X9.42 DH.
11535 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
11536 provides hooks that allow the default DSA functions or functions on a
11537 "per key" basis to be replaced. This allows hardware acceleration and
11538 hardware key storage to be handled without major modification to the
11539 library. Also added low level modexp hooks and CRYPTO_EX structure and
11540 associated functions.
11543 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
11544 as "read only": it can't be written to and the buffer it points to will
11545 not be freed. Reading from a read only BIO is much more efficient than
11546 a normal memory BIO. This was added because there are several times when
11547 an area of memory needs to be read from a BIO. The previous method was
11548 to create a memory BIO and write the data to it, this results in two
11549 copies of the data and an O(n^2) reading algorithm. There is a new
11550 function BIO_new_mem_buf() which creates a read only memory BIO from
11551 an area of memory. Also modified the PKCS#7 routines to use read only
11555 *) Bugfix: ssl23_get_client_hello did not work properly when called in
11556 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
11557 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
11558 but a retry condition occurred while trying to read the rest.
11561 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
11562 NID_pkcs7_encrypted by default: this was wrong since this should almost
11563 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
11564 the encrypted data type: this is a more sensible place to put it and it
11565 allows the PKCS#12 code to be tidied up that duplicated this
11569 *) Changed obj_dat.pl script so it takes its input and output files on
11570 the command line. This should avoid shell escape redirection problems
11574 *) Initial support for certificate extension requests, these are included
11575 in things like Xenroll certificate requests. Included functions to allow
11576 extensions to be obtained and added.
11579 *) -crlf option to s_client and s_server for sending newlines as
11580 CRLF (as required by many protocols).
11583 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
11585 *) Install libRSAglue.a when OpenSSL is built with RSAref.
11586 [Ralf S. Engelschall]
11588 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
11589 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
11591 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
11595 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
11596 DH parameters/keys (q is lost during that conversion, but the resulting
11597 DH parameters contain its length).
11599 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
11600 much faster than DH_generate_parameters (which creates parameters
11601 where p = 2*q + 1), and also the smaller q makes DH computations
11602 much more efficient (160-bit exponentiation instead of 1024-bit
11603 exponentiation); so this provides a convenient way to support DHE
11604 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
11605 utter importance to use
11606 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
11608 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
11609 when such DH parameters are used, because otherwise small subgroup
11610 attacks may become possible!
11613 *) Avoid memory leak in i2d_DHparams.
11616 *) Allow the -k option to be used more than once in the enc program:
11617 this allows the same encrypted message to be read by multiple recipients.
11620 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
11621 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
11622 it will always use the numerical form of the OID, even if it has a short
11626 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
11627 method only got called if p,q,dmp1,dmq1,iqmp components were present,
11628 otherwise bn_mod_exp was called. In the case of hardware keys for example
11629 no private key components need be present and it might store extra data
11630 in the RSA structure, which cannot be accessed from bn_mod_exp.
11631 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
11632 private key operations.
11635 *) Added support for SPARC Linux.
11638 *) pem_password_cb function type incompatibly changed from
11639 typedef int pem_password_cb(char *buf, int size, int rwflag);
11641 ....(char *buf, int size, int rwflag, void *userdata);
11642 so that applications can pass data to their callbacks:
11643 The PEM[_ASN1]_{read,write}... functions and macros now take an
11644 additional void * argument, which is just handed through whenever
11645 the password callback is called.
11646 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
11648 New function SSL_CTX_set_default_passwd_cb_userdata.
11650 Compatibility note: As many C implementations push function arguments
11651 onto the stack in reverse order, the new library version is likely to
11652 interoperate with programs that have been compiled with the old
11653 pem_password_cb definition (PEM_whatever takes some data that
11654 happens to be on the stack as its last argument, and the callback
11655 just ignores this garbage); but there is no guarantee whatsoever that
11658 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
11659 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
11660 problems not only on Windows, but also on some Unix platforms.
11661 To avoid problematic command lines, these definitions are now in an
11662 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
11663 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
11666 *) MIPS III/IV assembler module is reimplemented.
11669 *) More DES library cleanups: remove references to srand/rand and
11670 delete an unused file.
11673 *) Add support for the free Netwide assembler (NASM) under Win32,
11674 since not many people have MASM (ml) and it can be hard to obtain.
11675 This is currently experimental but it seems to work OK and pass all
11676 the tests. Check out INSTALL.W32 for info.
11679 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
11680 without temporary keys kept an extra copy of the server key,
11681 and connections with temporary keys did not free everything in case
11685 *) New function RSA_check_key and new openssl rsa option -check
11686 for verifying the consistency of RSA keys.
11687 [Ulf Moeller, Bodo Moeller]
11689 *) Various changes to make Win32 compile work:
11690 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
11691 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
11692 comparison" warnings.
11693 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
11696 *) Add a debugging option to PKCS#5 v2 key generation function: when
11697 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
11698 derived keys are printed to stderr.
11701 *) Copy the flags in ASN1_STRING_dup().
11702 [Roman E. Pavlov <pre@mo.msk.ru>]
11704 *) The x509 application mishandled signing requests containing DSA
11705 keys when the signing key was also DSA and the parameters didn't match.
11707 It was supposed to omit the parameters when they matched the signing key:
11708 the verifying software was then supposed to automatically use the CA's
11709 parameters if they were absent from the end user certificate.
11711 Omitting parameters is no longer recommended. The test was also
11712 the wrong way round! This was probably due to unusual behaviour in
11713 EVP_cmp_parameters() which returns 1 if the parameters match.
11714 This meant that parameters were omitted when they *didn't* match and
11715 the certificate was useless. Certificates signed with 'ca' didn't have
11717 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
11719 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
11720 The interface is as follows:
11721 Applications can use
11722 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
11723 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
11724 "off" is now the default.
11725 The library internally uses
11726 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
11727 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
11728 to disable memory-checking temporarily.
11730 Some inconsistent states that previously were possible (and were
11731 even the default) are now avoided.
11733 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
11734 with each memory chunk allocated; this is occasionally more helpful
11735 than just having a counter.
11737 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
11739 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
11743 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
11744 which largely parallels "options", but is for changing API behaviour,
11745 whereas "options" are about protocol behaviour.
11746 Initial "mode" flags are:
11748 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
11749 a single record has been written.
11750 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
11751 retries use the same buffer location.
11752 (But all of the contents must be
11756 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
11759 *) Fix problems with no-hmac etc.
11760 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
11762 *) New functions RSA_get_default_method(), RSA_set_method() and
11763 RSA_get_method(). These allows replacement of RSA_METHODs without having
11764 to mess around with the internals of an RSA structure.
11767 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
11768 Also really enable memory leak checks in openssl.c and in some
11770 [Chad C. Mulligan, Bodo Moeller]
11772 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
11773 up the length of negative integers. This has now been simplified to just
11774 store the length when it is first determined and use it later, rather
11775 than trying to keep track of where data is copied and updating it to
11777 [Steve Henson, reported by Brien Wheeler
11778 <bwheeler@authentica-security.com>]
11780 *) Add a new function PKCS7_signatureVerify. This allows the verification
11781 of a PKCS#7 signature but with the signing certificate passed to the
11782 function itself. This contrasts with PKCS7_dataVerify which assumes the
11783 certificate is present in the PKCS#7 structure. This isn't always the
11784 case: certificates can be omitted from a PKCS#7 structure and be
11785 distributed by "out of band" means (such as a certificate database).
11788 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
11789 function prototypes in pem.h, also change util/mkdef.pl to add the
11790 necessary function names.
11793 *) mk1mf.pl (used by Windows builds) did not properly read the
11794 options set by Configure in the top level Makefile, and Configure
11795 was not even able to write more than one option correctly.
11796 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
11799 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
11800 file to be loaded from a BIO or FILE pointer. The BIO version will
11801 for example allow memory BIOs to contain config info.
11804 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
11805 Whoever hopes to achieve shared-library compatibility across versions
11806 must use this, not the compile-time macro.
11807 (Exercise 0.9.4: Which is the minimum library version required by
11809 Note: All this applies only to multi-threaded programs, others don't
11813 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
11814 through a BIO pair triggered the default case, i.e.
11815 SSLerr(...,SSL_R_UNKNOWN_STATE).
11818 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
11819 can use the SSL library even if none of the specific BIOs is
11823 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
11824 for the encoded length.
11825 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
11827 *) Add initial documentation of the X509V3 functions.
11830 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
11831 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
11832 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
11833 secure PKCS#8 private key format with a high iteration count.
11836 *) Fix determination of Perl interpreter: A perl or perl5
11837 _directory_ in $PATH was also accepted as the interpreter.
11838 [Ralf S. Engelschall]
11840 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
11841 wrong with it but it was very old and did things like calling
11842 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
11843 unusual formatting.
11846 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
11847 to use the new extension code.
11850 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
11851 with macros. This should make it easier to change their form, add extra
11852 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
11856 *) Add to configuration table a new entry that can specify an alternative
11857 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
11858 according to Mark Crispin <MRC@Panda.COM>.
11862 *) DES CBC did not update the IV. Weird.
11865 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
11866 Changing the behaviour of the former might break existing programs --
11867 where IV updating is needed, des_ncbc_encrypt can be used.
11870 *) When bntest is run from "make test" it drives bc to check its
11871 calculations, as well as internally checking them. If an internal check
11872 fails, it needs to cause bc to give a non-zero result or make test carries
11873 on without noticing the failure. Fixed.
11876 *) DES library cleanups.
11879 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
11880 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
11881 ciphers. NOTE: although the key derivation function has been verified
11882 against some published test vectors it has not been extensively tested
11883 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
11887 *) Instead of "mkdir -p", which is not fully portable, use new
11888 Perl script "util/mkdir-p.pl".
11891 *) Rewrite the way password based encryption (PBE) is handled. It used to
11892 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
11893 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
11894 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
11895 the 'parameter' field of the AlgorithmIdentifier is passed to the
11896 underlying key generation function so it must do its own ASN1 parsing.
11897 This has also changed the EVP_PBE_CipherInit() function which now has a
11898 'parameter' argument instead of literal salt and iteration count values
11899 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
11902 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
11903 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
11904 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
11905 KEY" because this clashed with PKCS#8 unencrypted string. Since this
11906 value was just used as a "magic string" and not used directly its
11907 value doesn't matter.
11910 *) Introduce some semblance of const correctness to BN. Shame C doesn't
11914 *) "linux-sparc64" configuration (ultrapenguin).
11915 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
11916 "linux-sparc" configuration.
11917 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
11919 *) config now generates no-xxx options for missing ciphers.
11922 *) Support the EBCDIC character set (work in progress).
11923 File ebcdic.c not yet included because it has a different license.
11924 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
11926 *) Support BS2000/OSD-POSIX.
11927 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
11929 *) Make callbacks for key generation use void * instead of char *.
11932 *) Make S/MIME samples compile (not yet tested).
11935 *) Additional typesafe stacks.
11938 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
11942 Changes between 0.9.3 and 0.9.3a [29 May 1999]
11944 *) New configuration variant "sco5-gcc".
11946 *) Updated some demos.
11947 [Sean O Riordain, Wade Scholine]
11949 *) Add missing BIO_free at exit of pkcs12 application.
11952 *) Fix memory leak in conf.c.
11955 *) Updates for Win32 to assembler version of MD5.
11958 *) Set #! path to perl in apps/der_chop to where we found it
11959 instead of using a fixed path.
11962 *) SHA library changes for irix64-mips4-cc.
11965 *) Improvements for VMS support.
11969 Changes between 0.9.2b and 0.9.3 [24 May 1999]
11971 *) Bignum library bug fix. IRIX 6 passes "make test" now!
11972 This also avoids the problems with SC4.2 and unpatched SC5.
11973 [Andy Polyakov <appro@fy.chalmers.se>]
11975 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
11976 These are required because of the typesafe stack would otherwise break
11977 existing code. If old code used a structure member which used to be STACK
11978 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
11979 sk_num or sk_value it would produce an error because the num, data members
11980 are not present in STACK_OF. Now it just produces a warning. sk_set
11981 replaces the old method of assigning a value to sk_value
11982 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
11983 that does this will no longer work (and should use sk_set instead) but
11984 this could be regarded as a "questionable" behaviour anyway.
11987 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
11988 correctly handle encrypted S/MIME data.
11991 *) Change type of various DES function arguments from des_cblock
11992 (which means, in function argument declarations, pointer to char)
11993 to des_cblock * (meaning pointer to array with 8 char elements),
11994 which allows the compiler to do more typechecking; it was like
11995 that back in SSLeay, but with lots of ugly casts.
11997 Introduce new type const_des_cblock.
12000 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
12001 problems: find RecipientInfo structure that matches recipient certificate
12002 and initialise the ASN1 structures properly based on passed cipher.
12005 *) Belatedly make the BN tests actually check the results.
12008 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
12009 to and from BNs: it was completely broken. New compilation option
12010 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
12011 key elements as negative integers.
12014 *) Reorganize and speed up MD5.
12015 [Andy Polyakov <appro@fy.chalmers.se>]
12018 [Richard Levitte <richard@levitte.org>]
12020 *) New option -out to asn1parse to allow the parsed structure to be
12021 output to a file. This is most useful when combined with the -strparse
12022 option to examine the output of things like OCTET STRINGS.
12025 *) Make SSL library a little more fool-proof by not requiring any longer
12026 that SSL_set_{accept,connect}_state be called before
12027 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
12028 in many applications because usually everything *appeared* to work as
12029 intended anyway -- now it really works as intended).
12032 *) Move openssl.cnf out of lib/.
12035 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
12036 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
12037 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
12038 [Ralf S. Engelschall]
12040 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
12041 handle PKCS#7 enveloped data properly.
12042 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
12044 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
12045 copying pointers. The cert_st handling is changed by this in
12046 various ways (and thus what used to be known as ctx->default_cert
12047 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
12048 any longer when s->cert does not give us what we need).
12049 ssl_cert_instantiate becomes obsolete by this change.
12050 As soon as we've got the new code right (possibly it already is?),
12051 we have solved a couple of bugs of the earlier code where s->cert
12052 was used as if it could not have been shared with other SSL structures.
12054 Note that using the SSL API in certain dirty ways now will result
12055 in different behaviour than observed with earlier library versions:
12056 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
12057 does not influence s as it used to.
12059 In order to clean up things more thoroughly, inside SSL_SESSION
12060 we don't use CERT any longer, but a new structure SESS_CERT
12061 that holds per-session data (if available); currently, this is
12062 the peer's certificate chain and, for clients, the server's certificate
12063 and temporary key. CERT holds only those values that can have
12064 meaningful defaults in an SSL_CTX.
12067 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
12068 from the internal representation. Various PKCS#7 fixes: remove some
12069 evil casts and set the enc_dig_alg field properly based on the signing
12073 *) Allow PKCS#12 password to be set from the command line or the
12074 environment. Let 'ca' get its config file name from the environment
12075 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
12079 *) Allow certificate policies extension to use an IA5STRING for the
12080 organization field. This is contrary to the PKIX definition but
12081 VeriSign uses it and IE5 only recognises this form. Document 'x509'
12085 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
12086 without disallowing inline assembler and the like for non-pedantic builds.
12089 *) Support Borland C++ builder.
12090 [Janez Jere <jj@void.si>, modified by Ulf Möller]
12092 *) Support Mingw32.
12095 *) SHA-1 cleanups and performance enhancements.
12096 [Andy Polyakov <appro@fy.chalmers.se>]
12098 *) Sparc v8plus assembler for the bignum library.
12099 [Andy Polyakov <appro@fy.chalmers.se>]
12101 *) Accept any -xxx and +xxx compiler options in Configure.
12104 *) Update HPUX configuration.
12107 *) Add missing sk_<type>_unshift() function to safestack.h
12108 [Ralf S. Engelschall]
12110 *) New function SSL_CTX_use_certificate_chain_file that sets the
12111 "extra_cert"s in addition to the certificate. (This makes sense
12112 only for "PEM" format files, as chains as a whole are not
12116 *) Support verify_depth from the SSL API.
12117 x509_vfy.c had what can be considered an off-by-one-error:
12118 Its depth (which was not part of the external interface)
12119 was actually counting the number of certificates in a chain;
12120 now it really counts the depth.
12123 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
12124 instead of X509err, which often resulted in confusing error
12125 messages since the error codes are not globally unique
12126 (e.g. an alleged error in ssl3_accept when a certificate
12127 didn't match the private key).
12129 *) New function SSL_CTX_set_session_id_context that allows to set a default
12130 value (so that you don't need SSL_set_session_id_context for each
12131 connection using the SSL_CTX).
12134 *) OAEP decoding bug fix.
12137 *) Support INSTALL_PREFIX for package builders, as proposed by
12141 *) New Configure options "threads" and "no-threads". For systems
12142 where the proper compiler options are known (currently Solaris
12143 and Linux), "threads" is the default.
12146 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
12149 *) Install various scripts to $(OPENSSLDIR)/misc, not to
12150 $(INSTALLTOP)/bin -- they shouldn't clutter directories
12151 such as /usr/local/bin.
12154 *) "make linux-shared" to build shared libraries.
12155 [Niels Poppe <niels@netbox.org>]
12157 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
12160 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
12161 extension adding in x509 utility.
12164 *) Remove NOPROTO sections and error code comments.
12167 *) Partial rewrite of the DEF file generator to now parse the ANSI
12171 *) New Configure options --prefix=DIR and --openssldir=DIR.
12174 *) Complete rewrite of the error code script(s). It is all now handled
12175 by one script at the top level which handles error code gathering,
12176 header rewriting and C source file generation. It should be much better
12177 than the old method: it now uses a modified version of Ulf's parser to
12178 read the ANSI prototypes in all header files (thus the old K&R definitions
12179 aren't needed for error creation any more) and do a better job of
12180 translating function codes into names. The old 'ASN1 error code imbedded
12181 in a comment' is no longer necessary and it doesn't use .err files which
12182 have now been deleted. Also the error code call doesn't have to appear all
12183 on one line (which resulted in some large lines...).
12186 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
12189 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
12190 0 (which usually indicates a closed connection), but continue reading.
12193 *) Fix some race conditions.
12196 *) Add support for CRL distribution points extension. Add Certificate
12197 Policies and CRL distribution points documentation.
12200 *) Move the autogenerated header file parts to crypto/opensslconf.h.
12203 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
12204 8 of keying material. Merlin has also confirmed interop with this fix
12205 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
12206 [Merlin Hughes <merlin@baltimore.ie>]
12208 *) Fix lots of warnings.
12209 [Richard Levitte <levitte@stacken.kth.se>]
12211 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
12212 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
12213 [Richard Levitte <levitte@stacken.kth.se>]
12215 *) Fix problems with sizeof(long) == 8.
12216 [Andy Polyakov <appro@fy.chalmers.se>]
12218 *) Change functions to ANSI C.
12221 *) Fix typos in error codes.
12222 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
12224 *) Remove defunct assembler files from Configure.
12227 *) SPARC v8 assembler BIGNUM implementation.
12228 [Andy Polyakov <appro@fy.chalmers.se>]
12230 *) Support for Certificate Policies extension: both print and set.
12231 Various additions to support the r2i method this uses.
12234 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
12235 return a const string when you are expecting an allocated buffer.
12238 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
12239 types DirectoryString and DisplayText.
12242 *) Add code to allow r2i extensions to access the configuration database,
12243 add an LHASH database driver and add several ctx helper functions.
12246 *) Fix an evil bug in bn_expand2() which caused various BN functions to
12247 fail when they extended the size of a BIGNUM.
12250 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
12251 support typesafe stack.
12254 *) Fix typo in SSL_[gs]et_options().
12255 [Nils Frostberg <nils@medcom.se>]
12257 *) Delete various functions and files that belonged to the (now obsolete)
12258 old X509V3 handling code.
12261 *) New Configure option "rsaref".
12264 *) Don't auto-generate pem.h.
12267 *) Introduce type-safe ASN.1 SETs.
12270 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
12271 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
12273 *) Introduce type-safe STACKs. This will almost certainly break lots of code
12274 that links with OpenSSL (well at least cause lots of warnings), but fear
12275 not: the conversion is trivial, and it eliminates loads of evil casts. A
12276 few STACKed things have been converted already. Feel free to convert more.
12277 In the fullness of time, I'll do away with the STACK type altogether.
12280 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
12281 specified in <certfile> by updating the entry in the index.txt file.
12282 This way one no longer has to edit the index.txt file manually for
12283 revoking a certificate. The -revoke option does the gory details now.
12284 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
12286 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
12287 `-text' option at all and this way the `-noout -text' combination was
12288 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
12289 [Ralf S. Engelschall]
12291 *) Make sure a corresponding plain text error message exists for the
12292 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
12293 verify callback function determined that a certificate was revoked.
12294 [Ralf S. Engelschall]
12296 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
12297 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
12298 all available ciphers including rc5, which was forgotten until now.
12299 In order to let the testing shell script know which algorithms
12300 are available, a new (up to now undocumented) command
12301 "openssl list-cipher-commands" is used.
12304 *) Bugfix: s_client occasionally would sleep in select() when
12305 it should have checked SSL_pending() first.
12308 *) New functions DSA_do_sign and DSA_do_verify to provide access to
12309 the raw DSA values prior to ASN.1 encoding.
12312 *) Tweaks to Configure
12313 [Niels Poppe <niels@netbox.org>]
12315 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
12319 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
12322 *) New config option to avoid instructions that are illegal on the 80386.
12323 The default code is faster, but requires at least a 486.
12326 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
12327 SSL2_SERVER_VERSION (not used at all) macros, which are now the
12328 same as SSL2_VERSION anyway.
12331 *) New "-showcerts" option for s_client.
12334 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
12335 application. Various cleanups and fixes.
12338 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
12339 modify error routines to work internally. Add error codes and PBE init
12340 to library startup routines.
12343 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
12344 packing functions to asn1 and evp. Changed function names and error
12345 codes along the way.
12348 *) PKCS12 integration: and so it begins... First of several patches to
12349 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
12350 objects to objects.h
12353 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
12354 and display support for Thawte strong extranet extension.
12357 *) Add LinuxPPC support.
12358 [Jeff Dubrule <igor@pobox.org>]
12360 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
12361 bn_div_words in alpha.s.
12362 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
12364 *) Make sure the RSA OAEP test is skipped under -DRSAref because
12365 OAEP isn't supported when OpenSSL is built with RSAref.
12366 [Ulf Moeller <ulf@fitug.de>]
12368 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
12369 so they no longer are missing under -DNOPROTO.
12370 [Soren S. Jorvang <soren@t.dk>]
12373 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
12375 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
12376 doesn't work when the session is reused. Coming soon!
12379 *) Fix a security hole, that allows sessions to be reused in the wrong
12380 context thus bypassing client cert protection! All software that uses
12381 client certs and session caches in multiple contexts NEEDS PATCHING to
12382 allow session reuse! A fuller solution is in the works.
12383 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
12385 *) Some more source tree cleanups (removed obsolete files
12386 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
12387 permission on "config" script to be executable) and a fix for the INSTALL
12389 [Ulf Moeller <ulf@fitug.de>]
12391 *) Remove some legacy and erroneous uses of malloc, free instead of
12393 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
12395 *) Make rsa_oaep_test return non-zero on error.
12396 [Ulf Moeller <ulf@fitug.de>]
12398 *) Add support for native Solaris shared libraries. Configure
12399 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
12400 if someone would make that last step automatic.
12401 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
12403 *) ctx_size was not built with the right compiler during "make links". Fixed.
12406 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
12407 except NULL ciphers". This means the default cipher list will no longer
12408 enable NULL ciphers. They need to be specifically enabled e.g. with
12409 the string "DEFAULT:eNULL".
12412 *) Fix to RSA private encryption routines: if p < q then it would
12413 occasionally produce an invalid result. This will only happen with
12414 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
12417 *) Be less restrictive and allow also `perl util/perlpath.pl
12418 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
12419 because this way one can also use an interpreter named `perl5' (which is
12420 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
12421 installed as `perl').
12422 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12424 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
12425 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12427 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
12428 advapi32.lib to Win32 build and change the pem test comparison
12429 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
12430 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
12431 and crypto/des/ede_cbcm_enc.c.
12434 *) DES quad checksum was broken on big-endian architectures. Fixed.
12437 *) Comment out two functions in bio.h that aren't implemented. Fix up the
12438 Win32 test batch file so it (might) work again. The Win32 test batch file
12439 is horrible: I feel ill....
12442 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
12443 in e_os.h. Audit of header files to check ANSI and non ANSI
12444 sections: 10 functions were absent from non ANSI section and not exported
12445 from Windows DLLs. Fixed up libeay.num for new functions.
12448 *) Make `openssl version' output lines consistent.
12449 [Ralf S. Engelschall]
12451 *) Fix Win32 symbol export lists for BIO functions: Added
12452 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
12453 to ms/libeay{16,32}.def.
12454 [Ralf S. Engelschall]
12456 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
12457 fine under Unix and passes some trivial tests I've now added. But the
12458 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
12459 added to make sure no one expects that this stuff really works in the
12460 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
12461 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
12463 [Ralf S. Engelschall]
12465 *) Fix the generation of two part addresses in perl.
12466 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
12468 *) Add config entry for Linux on MIPS.
12469 [John Tobey <jtobey@channel1.com>]
12471 *) Make links whenever Configure is run, unless we are on Windoze.
12474 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
12475 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
12479 *) Add a useful kludge to allow package maintainers to specify compiler and
12480 other platforms details on the command line without having to patch the
12481 Configure script everytime: One now can use ``perl Configure
12482 <id>:<details>'', i.e. platform ids are allowed to have details appended
12483 to them (separated by colons). This is treated as there would be a static
12484 pre-configured entry in Configure's %table under key <id> with value
12485 <details> and ``perl Configure <id>'' is called. So, when you want to
12486 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
12487 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
12488 now, which overrides the FreeBSD-elf entry on-the-fly.
12489 [Ralf S. Engelschall]
12491 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
12494 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
12495 on the `perl Configure ...' command line. This way one can compile
12496 OpenSSL libraries with Position Independent Code (PIC) which is needed
12497 for linking it into DSOs.
12498 [Ralf S. Engelschall]
12500 *) Remarkably, export ciphers were totally broken and no-one had noticed!
12504 *) Cleaned up the LICENSE document: The official contact for any license
12505 questions now is the OpenSSL core team under openssl-core@openssl.org.
12506 And add a paragraph about the dual-license situation to make sure people
12507 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
12508 to the OpenSSL toolkit.
12509 [Ralf S. Engelschall]
12511 *) General source tree makefile cleanups: Made `making xxx in yyy...'
12512 display consistent in the source tree and replaced `/bin/rm' by `rm'.
12513 Additionally cleaned up the `make links' target: Remove unnecessary
12514 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
12515 to speed processing and no longer clutter the display with confusing
12516 stuff. Instead only the actually done links are displayed.
12517 [Ralf S. Engelschall]
12519 *) Permit null encryption ciphersuites, used for authentication only. It used
12520 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
12521 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
12525 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
12526 signed attributes when verifying signatures (this would break them),
12527 the detached data encoding was wrong and public keys obtained using
12528 X509_get_pubkey() weren't freed.
12531 *) Add text documentation for the BUFFER functions. Also added a work around
12532 to a Win95 console bug. This was triggered by the password read stuff: the
12533 last character typed gets carried over to the next fread(). If you were
12534 generating a new cert request using 'req' for example then the last
12535 character of the passphrase would be CR which would then enter the first
12539 *) Added the new `Includes OpenSSL Cryptography Software' button as
12540 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
12541 button and can be used by applications based on OpenSSL to show the
12542 relationship to the OpenSSL project.
12543 [Ralf S. Engelschall]
12545 *) Remove confusing variables in function signatures in files
12546 ssl/ssl_lib.c and ssl/ssl.h.
12547 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12549 *) Don't install bss_file.c under PREFIX/include/
12550 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12552 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
12553 functions that return function pointers and has support for NT specific
12554 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
12555 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
12556 unsigned to signed types: this was killing the Win32 compile.
12559 *) Add new certificate file to stack functions,
12560 SSL_add_dir_cert_subjects_to_stack() and
12561 SSL_add_file_cert_subjects_to_stack(). These largely supplant
12562 SSL_load_client_CA_file(), and can be used to add multiple certs easily
12563 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
12564 This means that Apache-SSL and similar packages don't have to mess around
12565 to add as many CAs as they want to the preferred list.
12568 *) Experiment with doxygen documentation. Currently only partially applied to
12570 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
12571 openssl.doxy as the configuration file.
12574 *) Get rid of remaining C++-style comments which strict C compilers hate.
12575 [Ralf S. Engelschall, pointed out by Carlos Amengual]
12577 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
12578 compiled in by default: it has problems with large keys.
12581 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
12582 DH private keys and/or callback functions which directly correspond to
12583 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
12584 is needed for applications which have to configure certificates on a
12585 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
12587 For the RSA certificate situation is makes no difference, but
12588 for the DSA certificate situation this fixes the "no shared cipher"
12589 problem where the OpenSSL cipher selection procedure failed because the
12590 temporary keys were not overtaken from the context and the API provided
12591 no way to reconfigure them.
12592 The new functions now let applications reconfigure the stuff and they
12593 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
12594 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
12595 non-public-API function ssl_cert_instantiate() is used as a helper
12596 function and also to reduce code redundancy inside ssl_rsa.c.
12597 [Ralf S. Engelschall]
12599 *) Move s_server -dcert and -dkey options out of the undocumented feature
12600 area because they are useful for the DSA situation and should be
12601 recognized by the users.
12602 [Ralf S. Engelschall]
12604 *) Fix the cipher decision scheme for export ciphers: the export bits are
12605 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
12606 SSL_EXP_MASK. So, the original variable has to be used instead of the
12607 already masked variable.
12608 [Richard Levitte <levitte@stacken.kth.se>]
12610 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
12611 [Richard Levitte <levitte@stacken.kth.se>]
12613 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
12614 from `int' to `unsigned int' because it's a length and initialized by
12615 EVP_DigestFinal() which expects an `unsigned int *'.
12616 [Richard Levitte <levitte@stacken.kth.se>]
12618 *) Don't hard-code path to Perl interpreter on shebang line of Configure
12619 script. Instead use the usual Shell->Perl transition trick.
12620 [Ralf S. Engelschall]
12622 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
12623 (in addition to RSA certificates) to match the behaviour of `openssl dsa
12624 -noout -modulus' as it's already the case for `openssl rsa -noout
12625 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
12626 currently the public key is printed (a decision which was already done by
12627 `openssl dsa -modulus' in the past) which serves a similar purpose.
12628 Additionally the NO_RSA no longer completely removes the whole -modulus
12629 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
12631 [Ralf S. Engelschall]
12633 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
12634 BIO. See the source (crypto/evp/bio_ok.c) for more info.
12635 [Arne Ansper <arne@ats.cyber.ee>]
12637 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
12638 to be added. Now both 'req' and 'ca' can use new objects defined in the
12642 *) Add cool BIO that does syslog (or event log on NT).
12643 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
12645 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
12646 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
12647 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
12648 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
12651 *) Add preliminary config info for new extension code.
12654 *) Make RSA_NO_PADDING really use no padding.
12655 [Ulf Moeller <ulf@fitug.de>]
12657 *) Generate errors when private/public key check is done.
12660 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
12661 for some CRL extensions and new objects added.
12664 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
12665 key usage extension and fuller support for authority key id.
12668 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
12669 padding method for RSA, which is recommended for new applications in PKCS
12670 #1 v2.0 (RFC 2437, October 1998).
12671 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
12672 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
12673 against Bleichbacher's attack on RSA.
12674 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
12677 *) Updates to the new SSL compression code
12678 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12680 *) Fix so that the version number in the master secret, when passed
12681 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
12682 (because the server will not accept higher), that the version number
12683 is 0x03,0x01, not 0x03,0x00
12684 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12686 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
12687 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
12688 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
12691 *) Support for RAW extensions where an arbitrary extension can be
12692 created by including its DER encoding. See apps/openssl.cnf for
12696 *) Make sure latest Perl versions don't interpret some generated C array
12697 code as Perl array code in the crypto/err/err_genc.pl script.
12698 [Lars Weber <3weber@informatik.uni-hamburg.de>]
12700 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
12701 not many people have the assembler. Various Win32 compilation fixes and
12702 update to the INSTALL.W32 file with (hopefully) more accurate Win32
12703 build instructions.
12706 *) Modify configure script 'Configure' to automatically create crypto/date.h
12707 file under Win32 and also build pem.h from pem.org. New script
12708 util/mkfiles.pl to create the MINFO file on environments that can't do a
12709 'make files': perl util/mkfiles.pl >MINFO should work.
12712 *) Major rework of DES function declarations, in the pursuit of correctness
12713 and purity. As a result, many evil casts evaporated, and some weirdness,
12714 too. You may find this causes warnings in your code. Zapping your evil
12715 casts will probably fix them. Mostly.
12718 *) Fix for a typo in asn1.h. Bug fix to object creation script
12719 obj_dat.pl. It considered a zero in an object definition to mean
12720 "end of object": none of the objects in objects.h have any zeros
12721 so it wasn't spotted.
12722 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
12724 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
12725 Masking (CBCM). In the absence of test vectors, the best I have been able
12726 to do is check that the decrypt undoes the encrypt, so far. Send me test
12727 vectors if you have them.
12730 *) Correct calculation of key length for export ciphers (too much space was
12731 allocated for null ciphers). This has not been tested!
12734 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
12735 message is now correct (it understands "crypto" and "ssl" on its
12736 command line). There is also now an "update" option. This will update
12737 the util/ssleay.num and util/libeay.num files with any new functions.
12739 perl util/mkdef.pl crypto ssl update
12740 it will update them.
12743 *) Overhauled the Perl interface (perl/*):
12744 - ported BN stuff to OpenSSL's different BN library
12745 - made the perl/ source tree CVS-aware
12746 - renamed the package from SSLeay to OpenSSL (the files still contain
12747 their history because I've copied them in the repository)
12748 - removed obsolete files (the test scripts will be replaced
12749 by better Test::Harness variants in the future)
12750 [Ralf S. Engelschall]
12752 *) First cut for a very conservative source tree cleanup:
12753 1. merge various obsolete readme texts into doc/ssleay.txt
12754 where we collect the old documents and readme texts.
12755 2. remove the first part of files where I'm already sure that we no
12756 longer need them because of three reasons: either they are just temporary
12757 files which were left by Eric or they are preserved original files where
12758 I've verified that the diff is also available in the CVS via "cvs diff
12759 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
12760 the crypto/md/ stuff).
12761 [Ralf S. Engelschall]
12763 *) More extension code. Incomplete support for subject and issuer alt
12764 name, issuer and authority key id. Change the i2v function parameters
12765 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
12766 what that's for :-) Fix to ASN1 macro which messed up
12767 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
12770 *) Preliminary support for ENUMERATED type. This is largely copied from the
12774 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
12775 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12777 *) Make sure `make rehash' target really finds the `openssl' program.
12778 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12780 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
12781 like to hear about it if this slows down other processors.
12784 *) Add CygWin32 platform information to Configure script.
12785 [Alan Batie <batie@aahz.jf.intel.com>]
12787 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
12788 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
12790 *) New program nseq to manipulate netscape certificate sequences
12793 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
12797 *) Fixes to BN code. Previously the default was to define BN_RECURSION
12798 but the BN code had some problems that would cause failures when
12799 doing certificate verification and some other functions.
12800 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12802 *) Add ASN1 and PEM code to support netscape certificate sequences.
12805 *) Add ASN1 and PEM code to support netscape certificate sequences.
12808 *) Add several PKIX and private extended key usage OIDs.
12811 *) Modify the 'ca' program to handle the new extension code. Modify
12812 openssl.cnf for new extension format, add comments.
12815 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
12816 and add a sample to openssl.cnf so req -x509 now adds appropriate
12820 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
12821 error code, add initial support to X509_print() and x509 application.
12824 *) Takes a deep breath and start adding X509 V3 extension support code. Add
12825 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
12826 stuff is currently isolated and isn't even compiled yet.
12829 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
12830 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
12831 Removed the versions check from X509 routines when loading extensions:
12832 this allows certain broken certificates that don't set the version
12833 properly to be processed.
12836 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
12837 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
12838 can still be regenerated with "make depend".
12841 *) Spelling mistake in C version of CAST-128.
12842 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
12844 *) Changes to the error generation code. The perl script err-code.pl
12845 now reads in the old error codes and retains the old numbers, only
12846 adding new ones if necessary. It also only changes the .err files if new
12847 codes are added. The makefiles have been modified to only insert errors
12848 when needed (to avoid needlessly modifying header files). This is done
12849 by only inserting errors if the .err file is newer than the auto generated
12850 C file. To rebuild all the error codes from scratch (the old behaviour)
12851 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
12852 or delete all the .err files.
12855 *) CAST-128 was incorrectly implemented for short keys. The C version has
12856 been fixed, but is untested. The assembler versions are also fixed, but
12857 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
12858 to regenerate it if needed.
12859 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
12860 Hagino <itojun@kame.net>]
12862 *) File was opened incorrectly in randfile.c.
12863 [Ulf Möller <ulf@fitug.de>]
12865 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
12866 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
12867 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
12868 al: it's just almost always a UTCTime. Note this patch adds new error
12869 codes so do a "make errors" if there are problems.
12872 *) Correct Linux 1 recognition in config.
12873 [Ulf Möller <ulf@fitug.de>]
12875 *) Remove pointless MD5 hash when using DSA keys in ca.
12876 [Anonymous <nobody@replay.com>]
12878 *) Generate an error if given an empty string as a cert directory. Also
12879 generate an error if handed NULL (previously returned 0 to indicate an
12880 error, but didn't set one).
12881 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
12883 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
12886 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
12887 parameters. This was causing a warning which killed off the Win32 compile.
12890 *) Remove C++ style comments from crypto/bn/bn_local.h.
12891 [Neil Costigan <neil.costigan@celocom.com>]
12893 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
12894 based on a text string, looking up short and long names and finally
12895 "dot" format. The "dot" format stuff didn't work. Added new function
12896 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
12897 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
12898 OID is not part of the table.
12901 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
12902 X509_LOOKUP_by_alias().
12905 *) Sort openssl functions by name.
12908 *) Get the gendsa program working (hopefully) and add it to app list. Remove
12909 encryption from sample DSA keys (in case anyone is interested the password
12913 *) Make _all_ *_free functions accept a NULL pointer.
12914 [Frans Heymans <fheymans@isaserver.be>]
12916 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
12918 [Anonymous <nobody@replay.com>]
12920 *) s_server should send the CAfile as acceptable CAs, not its own cert.
12921 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
12923 *) Don't blow it for numeric -newkey arguments to apps/req.
12924 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
12926 *) Temp key "for export" tests were wrong in s3_srvr.c.
12927 [Anonymous <nobody@replay.com>]
12929 *) Add prototype for temp key callback functions
12930 SSL_CTX_set_tmp_{rsa,dh}_callback().
12933 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
12934 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
12937 *) X509_name_add_entry() freed the wrong thing after an error.
12938 [Arne Ansper <arne@ats.cyber.ee>]
12940 *) rsa_eay.c would attempt to free a NULL context.
12941 [Arne Ansper <arne@ats.cyber.ee>]
12943 *) BIO_s_socket() had a broken should_retry() on Windoze.
12944 [Arne Ansper <arne@ats.cyber.ee>]
12946 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
12947 [Arne Ansper <arne@ats.cyber.ee>]
12949 *) Make sure the already existing X509_STORE->depth variable is initialized
12950 in X509_STORE_new(), but document the fact that this variable is still
12951 unused in the certificate verification process.
12952 [Ralf S. Engelschall]
12954 *) Fix the various library and apps files to free up pkeys obtained from
12955 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
12958 *) Fix reference counting in X509_PUBKEY_get(). This makes
12959 demos/maurice/example2.c work, amongst others, probably.
12960 [Steve Henson and Ben Laurie]
12962 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
12963 `openssl' and second, the shortcut symlinks for the `openssl <command>'
12964 are no longer created. This way we have a single and consistent command
12965 line interface `openssl <command>', similar to `cvs <command>'.
12966 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
12968 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
12969 BIT STRING wrapper always have zero unused bits.
12972 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
12975 *) Make the top-level INSTALL documentation easier to understand.
12978 *) Makefiles updated to exit if an error occurs in a sub-directory
12979 make (including if user presses ^C) [Paul Sutton]
12981 *) Make Montgomery context stuff explicit in RSA data structure.
12984 *) Fix build order of pem and err to allow for generated pem.h.
12987 *) Fix renumbering bug in X509_NAME_delete_entry().
12990 *) Enhanced the err-ins.pl script so it makes the error library number
12991 global and can add a library name. This is needed for external ASN1 and
12992 other error libraries.
12995 *) Fixed sk_insert which never worked properly.
12998 *) Fix ASN1 macros so they can handle indefinite length constructed
12999 EXPLICIT tags. Some non standard certificates use these: they can now
13003 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
13004 into a single doc/ssleay.txt bundle. This way the information is still
13005 preserved but no longer messes up this directory. Now it's new room for
13006 the new set of documentation files.
13007 [Ralf S. Engelschall]
13009 *) SETs were incorrectly DER encoded. This was a major pain, because they
13010 shared code with SEQUENCEs, which aren't coded the same. This means that
13011 almost everything to do with SETs or SEQUENCEs has either changed name or
13012 number of arguments.
13013 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
13015 *) Fix test data to work with the above.
13018 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
13019 was already fixed by Eric for 0.9.1 it seems.
13020 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
13022 *) Autodetect FreeBSD3.
13025 *) Fix various bugs in Configure. This affects the following platforms:
13029 unixware-2.0-pentium
13033 *) Eliminate generated files from CVS. Reorder tests to regenerate files
13034 before they are needed.
13037 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
13041 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
13043 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
13044 changed SSLeay to OpenSSL in version strings.
13045 [Ralf S. Engelschall]
13047 *) Some fixups to the top-level documents.
13050 *) Fixed the nasty bug where rsaref.h was not found under compile-time
13051 because the symlink to include/ was missing.
13052 [Ralf S. Engelschall]
13054 *) Incorporated the popular no-RSA/DSA-only patches
13055 which allow to compile a RSA-free SSLeay.
13056 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
13058 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
13059 when "ssleay" is still not found.
13060 [Ralf S. Engelschall]
13062 *) Added more platforms to Configure: Cray T3E, HPUX 11,
13063 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
13065 *) Updated the README file.
13066 [Ralf S. Engelschall]
13068 *) Added various .cvsignore files in the CVS repository subdirs
13069 to make a "cvs update" really silent.
13070 [Ralf S. Engelschall]
13072 *) Recompiled the error-definition header files and added
13073 missing symbols to the Win32 linker tables.
13074 [Ralf S. Engelschall]
13076 *) Cleaned up the top-level documents;
13077 o new files: CHANGES and LICENSE
13078 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
13079 o merged COPYRIGHT into LICENSE
13080 o removed obsolete TODO file
13081 o renamed MICROSOFT to INSTALL.W32
13082 [Ralf S. Engelschall]
13084 *) Removed dummy files from the 0.9.1b source tree:
13085 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
13086 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
13087 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
13088 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
13089 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
13090 [Ralf S. Engelschall]
13092 *) Added various platform portability fixes.
13095 *) The Genesis of the OpenSSL rpject:
13096 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
13097 Young and Tim J. Hudson created while they were working for C2Net until
13099 [The OpenSSL Project]
13102 Changes between 0.9.0b and 0.9.1b [not released]
13104 *) Updated a few CA certificates under certs/
13107 *) Changed some BIGNUM api stuff.
13110 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
13111 DGUX x86, Linux Alpha, etc.
13114 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
13115 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
13119 *) Add -strparse option to asn1pars program which parses nested
13121 [Dr Stephen Henson <shenson@bigfoot.com>]
13123 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
13126 *) DSA fix for "ca" program.
13129 *) Added "-genkey" option to "dsaparam" program.
13132 *) Added RIPE MD160 (rmd160) message digest.
13135 *) Added -a (all) option to "ssleay version" command.
13138 *) Added PLATFORM define which is the id given to Configure.
13141 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
13144 *) Extended the ASN.1 parser routines.
13147 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
13150 *) Added a BN_CTX to the BN library.
13153 *) Fixed the weak key values in DES library
13156 *) Changed API in EVP library for cipher aliases.
13159 *) Added support for RC2/64bit cipher.
13162 *) Converted the lhash library to the crypto/mem.c functions.
13165 *) Added more recognized ASN.1 object ids.
13168 *) Added more RSA padding checks for SSL/TLS.
13171 *) Added BIO proxy/filter functionality.
13174 *) Added extra_certs to SSL_CTX which can be used
13175 send extra CA certificates to the client in the CA cert chain sending
13176 process. It can be configured with SSL_CTX_add_extra_chain_cert().
13179 *) Now Fortezza is denied in the authentication phase because
13180 this is key exchange mechanism is not supported by SSLeay at all.
13183 *) Additional PKCS1 checks.
13186 *) Support the string "TLSv1" for all TLS v1 ciphers.
13189 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
13190 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
13193 *) Fixed a few memory leaks.
13196 *) Fixed various code and comment typos.
13199 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
13200 bytes sent in the client random.
13201 [Edward Bishop <ebishop@spyglass.com>]